diff options
Diffstat (limited to 'arch/arm/mach-u300')
28 files changed, 5318 insertions, 0 deletions
diff --git a/arch/arm/mach-u300/Kconfig b/arch/arm/mach-u300/Kconfig new file mode 100644 index 000000000000..337b9aabce49 --- /dev/null +++ b/arch/arm/mach-u300/Kconfig @@ -0,0 +1,105 @@ +if ARCH_U300 + +menu "ST-Ericsson AB U300/U330/U335/U365 Platform" + +comment "ST-Ericsson Mobile Platform Products" + +config MACH_U300 + bool "U300" + +comment "ST-Ericsson U300/U330/U335/U365 Feature Selections" + +choice + prompt "U300/U330/U335/U365 system type" + default MACH_U300_BS2X + ---help--- + You need to select the target system, i.e. the + U300/U330/U335/U365 board that you want to compile your kernel + for. + +config MACH_U300_BS2X + bool "S26/S26/B25/B26 Test Products" + depends on MACH_U300 + help + Select this if you're developing on the + S26/S25 test products. (Also works on + B26/B25 big boards.) + +config MACH_U300_BS330 + bool "S330/B330 Test Products" + depends on MACH_U300 + help + Select this if you're developing on the + S330/B330 test products. + +config MACH_U300_BS335 + bool "S335/B335 Test Products" + depends on MACH_U300 + help + Select this if you're developing on the + S335/B335 test products. + +config MACH_U300_BS365 + bool "S365/B365 Test Products" + depends on MACH_U300 + help + Select this if you're developing on the + S365/B365 test products. + +endchoice + +choice + prompt "Memory configuration" + default MACH_U300_SINGLE_RAM + ---help--- + You have to config the kernel according to the physical memory + configuration. + +config MACH_U300_SINGLE_RAM + bool "Single RAM" + help + Select this if you want support for Single RAM phones. + +config MACH_U300_DUAL_RAM + bool "Dual RAM" + help + Select this if you want support for Dual RAM phones. + This is two RAM memorys on different EMIFs. +endchoice + +config U300_DEBUG + bool "Debug support for U300" + depends on PM + help + Debug support for U300 in sysfs, procfs etc. + +config MACH_U300_SEMI_IS_SHARED + bool "The SEMI is used by both the access and application side" + depends on MACH_U300 + help + This makes it possible to use the SEMI (Shared External + Memory Interface) from both from access and application + side. + +comment "All the settings below must match the bootloader's settings" + +config MACH_U300_ACCESS_MEM_SIZE + int "Access CPU memory allocation" + range 7 25 + depends on MACH_U300_SINGLE_RAM + default 13 + help + How much memory in MiB that the Access side CPU has allocated + +config MACH_U300_2MB_ALIGNMENT_FIX + bool "2MiB alignment fix" + depends on MACH_U300_SINGLE_RAM + default y + help + If yes and the Access side CPU has allocated an odd size in + MiB, this fix gives you one MiB extra that would otherwise be + lost due to Linux 2 MiB alignment policy. + +endmenu + +endif diff --git a/arch/arm/mach-u300/Makefile b/arch/arm/mach-u300/Makefile new file mode 100644 index 000000000000..24950e0df4b4 --- /dev/null +++ b/arch/arm/mach-u300/Makefile @@ -0,0 +1,11 @@ +# +# Makefile for the linux kernel, U300 machine. +# + +obj-y := core.o clock.o timer.o gpio.o padmux.o +obj-m := +obj-n := +obj- := + +obj-$(CONFIG_ARCH_U300) += u300.o +obj-$(CONFIG_MMC) += mmc.o diff --git a/arch/arm/mach-u300/Makefile.boot b/arch/arm/mach-u300/Makefile.boot new file mode 100644 index 000000000000..6fbfc6ea2d35 --- /dev/null +++ b/arch/arm/mach-u300/Makefile.boot @@ -0,0 +1,15 @@ +# Note: the following conditions must always be true: +# ZRELADDR == virt_to_phys(TEXTADDR) +# PARAMS_PHYS must be within 4MB of ZRELADDR +# INITRD_PHYS must be in RAM + +ifdef CONFIG_MACH_U300_SINGLE_RAM + zreladdr-y := 0x28E08000 + params_phys-y := 0x28E00100 +else + zreladdr-y := 0x48008000 + params_phys-y := 0x48000100 +endif + +# This isn't used. +#initrd_phys-y := 0x29800000 diff --git a/arch/arm/mach-u300/clock.c b/arch/arm/mach-u300/clock.c new file mode 100644 index 000000000000..5cd04d6751b3 --- /dev/null +++ b/arch/arm/mach-u300/clock.c @@ -0,0 +1,1487 @@ +/* + * + * arch/arm/mach-u300/clock.c + * + * + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Define clocks in the app platform. + * Author: Linus Walleij <linus.walleij@stericsson.com> + * Author: Jonas Aaberg <jonas.aberg@stericsson.com> + * + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/string.h> +#include <linux/clk.h> +#include <linux/mutex.h> +#include <linux/spinlock.h> +#include <linux/debugfs.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/timer.h> +#include <linux/io.h> + +#include <asm/clkdev.h> +#include <mach/hardware.h> +#include <mach/syscon.h> + +#include "clock.h" + +/* + * TODO: + * - move all handling of the CCR register into this file and create + * a spinlock for the CCR register + * - switch to the clkdevice lookup mechanism that maps clocks to + * device ID:s instead when it becomes available in kernel 2.6.29. + * - implement rate get/set for all clocks that need it. + */ + +/* + * Syscon clock I/O registers lock so clock requests don't collide + * NOTE: this is a local lock only used to lock access to clock and + * reset registers in syscon. + */ +static DEFINE_SPINLOCK(syscon_clkreg_lock); +static DEFINE_SPINLOCK(syscon_resetreg_lock); + +/* + * The clocking hierarchy currently looks like this. + * NOTE: the idea is NOT to show how the clocks are routed on the chip! + * The ideas is to show dependencies, so a clock higher up in the + * hierarchy has to be on in order for another clock to be on. Now, + * both CPU and DMA can actually be on top of the hierarchy, and that + * is not modeled currently. Instead we have the backbone AMBA bus on + * top. This bus cannot be programmed in any way but conceptually it + * needs to be active for the bridges and devices to transport data. + * + * Please be aware that a few clocks are hw controlled, which mean that + * the hw itself can turn on/off or change the rate of the clock when + * needed! + * + * AMBA bus + * | + * +- CPU + * +- NANDIF NAND Flash interface + * +- SEMI Shared Memory interface + * +- ISP Image Signal Processor (U335 only) + * +- CDS (U335 only) + * +- DMA Direct Memory Access Controller + * +- AAIF APP/ACC Inteface (Mobile Scalable Link, MSL) + * +- APEX + * +- VIDEO_ENC AVE2/3 Video Encoder + * +- XGAM Graphics Accelerator Controller + * +- AHB + * | + * +- ahb:0 AHB Bridge + * | | + * | +- ahb:1 INTCON Interrupt controller + * | +- ahb:3 MSPRO Memory Stick Pro controller + * | +- ahb:4 EMIF External Memory interface + * | + * +- fast:0 FAST bridge + * | | + * | +- fast:1 MMCSD MMC/SD card reader controller + * | +- fast:2 I2S0 PCM I2S channel 0 controller + * | +- fast:3 I2S1 PCM I2S channel 1 controller + * | +- fast:4 I2C0 I2C channel 0 controller + * | +- fast:5 I2C1 I2C channel 1 controller + * | +- fast:6 SPI SPI controller + * | +- fast:7 UART1 Secondary UART (U335 only) + * | + * +- slow:0 SLOW bridge + * | + * +- slow:1 SYSCON (not possible to control) + * +- slow:2 WDOG Watchdog + * +- slow:3 UART0 primary UART + * +- slow:4 TIMER_APP Application timer - used in Linux + * +- slow:5 KEYPAD controller + * +- slow:6 GPIO controller + * +- slow:7 RTC controller + * +- slow:8 BT Bus Tracer (not used currently) + * +- slow:9 EH Event Handler (not used currently) + * +- slow:a TIMER_ACC Access style timer (not used currently) + * +- slow:b PPM (U335 only, what is that?) + */ + +/* + * Reset control functions. We remember if a block has been + * taken out of reset and don't remove the reset assertion again + * and vice versa. Currently we only remove resets so the + * enablement function is defined out. + */ +static void syscon_block_reset_enable(struct clk *clk) +{ + u16 val; + unsigned long iflags; + + /* Not all blocks support resetting */ + if (!clk->res_reg || !clk->res_mask) + return; + spin_lock_irqsave(&syscon_resetreg_lock, iflags); + val = readw(clk->res_reg); + val |= clk->res_mask; + writew(val, clk->res_reg); + spin_unlock_irqrestore(&syscon_resetreg_lock, iflags); + clk->reset = true; +} + +static void syscon_block_reset_disable(struct clk *clk) +{ + u16 val; + unsigned long iflags; + + /* Not all blocks support resetting */ + if (!clk->res_reg || !clk->res_mask) + return; + spin_lock_irqsave(&syscon_resetreg_lock, iflags); + val = readw(clk->res_reg); + val &= ~clk->res_mask; + writew(val, clk->res_reg); + spin_unlock_irqrestore(&syscon_resetreg_lock, iflags); + clk->reset = false; +} + +int __clk_get(struct clk *clk) +{ + u16 val; + + /* The MMC and MSPRO clocks need some special set-up */ + if (!strcmp(clk->name, "MCLK")) { + /* Set default MMC clock divisor to 18.9 MHz */ + writew(0x0054U, U300_SYSCON_VBASE + U300_SYSCON_MMF0R); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_MMCR); + /* Disable the MMC feedback clock */ + val &= ~U300_SYSCON_MMCR_MMC_FB_CLK_SEL_ENABLE; + /* Disable MSPRO frequency */ + val &= ~U300_SYSCON_MMCR_MSPRO_FREQSEL_ENABLE; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_MMCR); + } + if (!strcmp(clk->name, "MSPRO")) { + val = readw(U300_SYSCON_VBASE + U300_SYSCON_MMCR); + /* Disable the MMC feedback clock */ + val &= ~U300_SYSCON_MMCR_MMC_FB_CLK_SEL_ENABLE; + /* Enable MSPRO frequency */ + val |= U300_SYSCON_MMCR_MSPRO_FREQSEL_ENABLE; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_MMCR); + } + return 1; +} +EXPORT_SYMBOL(__clk_get); + +void __clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(__clk_put); + +static void syscon_clk_disable(struct clk *clk) +{ + unsigned long iflags; + + /* Don't touch the hardware controlled clocks */ + if (clk->hw_ctrld) + return; + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + writew(clk->clk_val, U300_SYSCON_VBASE + U300_SYSCON_SBCDR); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} + +static void syscon_clk_enable(struct clk *clk) +{ + unsigned long iflags; + + /* Don't touch the hardware controlled clocks */ + if (clk->hw_ctrld) + return; + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + writew(clk->clk_val, U300_SYSCON_VBASE + U300_SYSCON_SBCER); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} + +static u16 syscon_clk_get_rate(void) +{ + u16 val; + unsigned long iflags; + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR); + val &= U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK; + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); + return val; +} + +#ifdef CONFIG_MACH_U300_USE_I2S_AS_MASTER +static void enable_i2s0_vcxo(void) +{ + u16 val; + unsigned long iflags; + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + /* Set I2S0 to use the VCXO 26 MHz clock */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR); + val |= U300_SYSCON_CCR_TURN_VCXO_ON; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + val |= U300_SYSCON_CCR_I2S0_USE_VCXO; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CEFR); + val |= U300_SYSCON_CEFR_I2S0_CLK_EN; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CEFR); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} + +static void enable_i2s1_vcxo(void) +{ + u16 val; + unsigned long iflags; + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + /* Set I2S1 to use the VCXO 26 MHz clock */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR); + val |= U300_SYSCON_CCR_TURN_VCXO_ON; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + val |= U300_SYSCON_CCR_I2S1_USE_VCXO; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CEFR); + val |= U300_SYSCON_CEFR_I2S1_CLK_EN; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CEFR); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} + +static void disable_i2s0_vcxo(void) +{ + u16 val; + unsigned long iflags; + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + /* Disable I2S0 use of the VCXO 26 MHz clock */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR); + val &= ~U300_SYSCON_CCR_I2S0_USE_VCXO; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + /* Deactivate VCXO if noone else is using VCXO */ + if (!(val & U300_SYSCON_CCR_I2S1_USE_VCXO)) + val &= ~U300_SYSCON_CCR_TURN_VCXO_ON; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CEFR); + val &= ~U300_SYSCON_CEFR_I2S0_CLK_EN; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CEFR); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} + +static void disable_i2s1_vcxo(void) +{ + u16 val; + unsigned long iflags; + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + /* Disable I2S1 use of the VCXO 26 MHz clock */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR); + val &= ~U300_SYSCON_CCR_I2S1_USE_VCXO; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + /* Deactivate VCXO if noone else is using VCXO */ + if (!(val & U300_SYSCON_CCR_I2S0_USE_VCXO)) + val &= ~U300_SYSCON_CCR_TURN_VCXO_ON; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CEFR); + val &= ~U300_SYSCON_CEFR_I2S0_CLK_EN; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CEFR); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} +#endif /* CONFIG_MACH_U300_USE_I2S_AS_MASTER */ + + +static void syscon_clk_rate_set_mclk(unsigned long rate) +{ + u16 val; + u32 reg; + unsigned long iflags; + + switch (rate) { + case 18900000: + val = 0x0054; + break; + case 20800000: + val = 0x0044; + break; + case 23100000: + val = 0x0043; + break; + case 26000000: + val = 0x0033; + break; + case 29700000: + val = 0x0032; + break; + case 34700000: + val = 0x0022; + break; + case 41600000: + val = 0x0021; + break; + case 52000000: + val = 0x0011; + break; + case 104000000: + val = 0x0000; + break; + default: + printk(KERN_ERR "Trying to set MCLK to unknown speed! %ld\n", + rate); + return; + } + + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + reg = readw(U300_SYSCON_VBASE + U300_SYSCON_MMF0R) & + ~U300_SYSCON_MMF0R_MASK; + writew(reg | val, U300_SYSCON_VBASE + U300_SYSCON_MMF0R); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} + +void syscon_clk_rate_set_cpuclk(unsigned long rate) +{ + u16 val; + unsigned long iflags; + + switch (rate) { + case 13000000: + val = U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER; + break; + case 52000000: + val = U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE; + break; + case 104000000: + val = U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH; + break; + case 208000000: + val = U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST; + break; + default: + return; + } + spin_lock_irqsave(&syscon_clkreg_lock, iflags); + val |= readw(U300_SYSCON_VBASE + U300_SYSCON_CCR) & + ~U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK ; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + spin_unlock_irqrestore(&syscon_clkreg_lock, iflags); +} +EXPORT_SYMBOL(syscon_clk_rate_set_cpuclk); + +void clk_disable(struct clk *clk) +{ + unsigned long iflags; + + spin_lock_irqsave(&clk->lock, iflags); + if (clk->usecount > 0 && !(--clk->usecount)) { + /* some blocks lack clocking registers and cannot be disabled */ + if (clk->disable) + clk->disable(clk); + if (likely((u32)clk->parent)) + clk_disable(clk->parent); + } +#ifdef CONFIG_MACH_U300_USE_I2S_AS_MASTER + if (unlikely(!strcmp(clk->name, "I2S0"))) + disable_i2s0_vcxo(); + if (unlikely(!strcmp(clk->name, "I2S1"))) + disable_i2s1_vcxo(); +#endif + spin_unlock_irqrestore(&clk->lock, iflags); +} +EXPORT_SYMBOL(clk_disable); + +int clk_enable(struct clk *clk) +{ + int ret = 0; + unsigned long iflags; + + spin_lock_irqsave(&clk->lock, iflags); + if (clk->usecount++ == 0) { + if (likely((u32)clk->parent)) + ret = clk_enable(clk->parent); + + if (unlikely(ret != 0)) + clk->usecount--; + else { + /* remove reset line (we never enable reset again) */ + syscon_block_reset_disable(clk); + /* clocks without enable function are always on */ + if (clk->enable) + clk->enable(clk); +#ifdef CONFIG_MACH_U300_USE_I2S_AS_MASTER + if (unlikely(!strcmp(clk->name, "I2S0"))) + enable_i2s0_vcxo(); + if (unlikely(!strcmp(clk->name, "I2S1"))) + enable_i2s1_vcxo(); +#endif + } + } + spin_unlock_irqrestore(&clk->lock, iflags); + return ret; + +} +EXPORT_SYMBOL(clk_enable); + +/* Returns the clock rate in Hz */ +static unsigned long clk_get_rate_cpuclk(struct clk *clk) +{ + u16 val; + + val = syscon_clk_get_rate(); + + switch (val) { + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW: + return 13000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE: + return 52000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH: + return 104000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST: + return 208000000; + default: + break; + } + return clk->rate; +} + +static unsigned long clk_get_rate_ahb_clk(struct clk *clk) +{ + u16 val; + + val = syscon_clk_get_rate(); + + switch (val) { + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW: + return 6500000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE: + return 26000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST: + return 52000000; + default: + break; + } + return clk->rate; + +} + +static unsigned long clk_get_rate_emif_clk(struct clk *clk) +{ + u16 val; + + val = syscon_clk_get_rate(); + + switch (val) { + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW: + return 13000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE: + return 52000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST: + return 104000000; + default: + break; + } + return clk->rate; + +} + +static unsigned long clk_get_rate_xgamclk(struct clk *clk) +{ + u16 val; + + val = syscon_clk_get_rate(); + + switch (val) { + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW: + return 6500000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE: + return 26000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST: + return 52000000; + default: + break; + } + + return clk->rate; +} + +static unsigned long clk_get_rate_mclk(struct clk *clk) +{ + u16 val; + + val = syscon_clk_get_rate(); + + switch (val) { + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER: + /* + * Here, the 208 MHz PLL gets shut down and the always + * on 13 MHz PLL used for RTC etc kicks into use + * instead. + */ + return 13000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST: + { + /* + * This clock is under program control. The register is + * divided in two nybbles, bit 7-4 gives cycles-1 to count + * high, bit 3-0 gives cycles-1 to count low. Distribute + * these with no more than 1 cycle difference between + * low and high and add low and high to get the actual + * divisor. The base PLL is 208 MHz. Writing 0x00 will + * divide by 1 and 1 so the highest frequency possible + * is 104 MHz. + * + * e.g. 0x54 => + * f = 208 / ((5+1) + (4+1)) = 208 / 11 = 18.9 MHz + */ + u16 val = readw(U300_SYSCON_VBASE + U300_SYSCON_MMF0R) & + U300_SYSCON_MMF0R_MASK; + switch (val) { + case 0x0054: + return 18900000; + case 0x0044: + return 20800000; + case 0x0043: + return 23100000; + case 0x0033: + return 26000000; + case 0x0032: + return 29700000; + case 0x0022: + return 34700000; + case 0x0021: + return 41600000; + case 0x0011: + return 52000000; + case 0x0000: + return 104000000; + default: + break; + } + } + default: + break; + } + + return clk->rate; +} + +static unsigned long clk_get_rate_i2s_i2c_spi(struct clk *clk) +{ + u16 val; + + val = syscon_clk_get_rate(); + + switch (val) { + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW: + return 13000000; + case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH: + case U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST: + return 26000000; + default: + break; + } + + return clk->rate; +} + +unsigned long clk_get_rate(struct clk *clk) +{ + if (clk->get_rate) + return clk->get_rate(clk); + else + return clk->rate; +} +EXPORT_SYMBOL(clk_get_rate); + +static unsigned long clk_round_rate_mclk(struct clk *clk, unsigned long rate) +{ + if (rate >= 18900000) + return 18900000; + if (rate >= 20800000) + return 20800000; + if (rate >= 23100000) + return 23100000; + if (rate >= 26000000) + return 26000000; + if (rate >= 29700000) + return 29700000; + if (rate >= 34700000) + return 34700000; + if (rate >= 41600000) + return 41600000; + if (rate >= 52000000) + return 52000000; + return -EINVAL; +} + +static unsigned long clk_round_rate_cpuclk(struct clk *clk, unsigned long rate) +{ + if (rate >= 13000000) + return 13000000; + if (rate >= 52000000) + return 52000000; + if (rate >= 104000000) + return 104000000; + if (rate >= 208000000) + return 208000000; + return -EINVAL; +} + +/* + * This adjusts a requested rate to the closest exact rate + * a certain clock can provide. For a fixed clock it's + * mostly clk->rate. + */ +long clk_round_rate(struct clk *clk, unsigned long rate) +{ + /* TODO: get apropriate switches for EMIFCLK, AHBCLK and MCLK */ + /* Else default to fixed value */ + + if (clk->round_rate) { + return (long) clk->round_rate(clk, rate); + } else { + printk(KERN_ERR "clock: Failed to round rate of %s\n", + clk->name); + } + return (long) clk->rate; +} +EXPORT_SYMBOL(clk_round_rate); + +static int clk_set_rate_mclk(struct clk *clk, unsigned long rate) +{ + syscon_clk_rate_set_mclk(clk_round_rate(clk, rate)); + return 0; +} + +static int clk_set_rate_cpuclk(struct clk *clk, unsigned long rate) +{ + syscon_clk_rate_set_cpuclk(clk_round_rate(clk, rate)); + return 0; +} + +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + /* TODO: set for EMIFCLK and AHBCLK */ + /* Else assume the clock is fixed and fail */ + if (clk->set_rate) { + return clk->set_rate(clk, rate); + } else { + printk(KERN_ERR "clock: Failed to set %s to %ld hz\n", + clk->name, rate); + return -EINVAL; + } +} +EXPORT_SYMBOL(clk_set_rate); + +/* + * Clock definitions. The clock parents are set to respective + * bridge and the clock framework makes sure that the clocks have + * parents activated and are brought out of reset when in use. + * + * Clocks that have hw_ctrld = true are hw controlled, and the hw + * can by itself turn these clocks on and off. + * So in other words, we don't really have to care about them. + */ + +static struct clk amba_clk = { + .name = "AMBA", + .rate = 52000000, /* this varies! */ + .hw_ctrld = true, + .reset = false, +}; + +/* + * These blocks are connected directly to the AMBA bus + * with no bridge. + */ + +static struct clk cpu_clk = { + .name = "CPU", + .parent = &amba_clk, + .rate = 208000000, /* this varies! */ + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_CPU_RESET_EN, + .set_rate = clk_set_rate_cpuclk, + .get_rate = clk_get_rate_cpuclk, + .round_rate = clk_round_rate_cpuclk, +}; + +static struct clk nandif_clk = { + .name = "NANDIF", + .parent = &amba_clk, + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_NANDIF_RESET_EN, + .clk_val = U300_SYSCON_SBCER_NANDIF_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk semi_clk = { + .name = "SEMI", + .parent = &amba_clk, + .rate = 0, /* FIXME */ + /* It is not possible to reset SEMI */ + .hw_ctrld = false, + .reset = false, + .clk_val = U300_SYSCON_SBCER_SEMI_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +#ifdef CONFIG_MACH_U300_BS335 +static struct clk isp_clk = { + .name = "ISP", + .parent = &amba_clk, + .rate = 0, /* FIXME */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_ISP_RESET_EN, + .clk_val = U300_SYSCON_SBCER_ISP_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk cds_clk = { + .name = "CDS", + .parent = &amba_clk, + .rate = 0, /* FIXME */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_CDS_RESET_EN, + .clk_val = U300_SYSCON_SBCER_CDS_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; +#endif + +static struct clk dma_clk = { + .name = "DMA", + .parent = &amba_clk, + .rate = 52000000, /* this varies! */ + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_DMAC_RESET_EN, + .clk_val = U300_SYSCON_SBCER_DMAC_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk aaif_clk = { + .name = "AAIF", + .parent = &amba_clk, + .rate = 52000000, /* this varies! */ + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_AAIF_RESET_EN, + .clk_val = U300_SYSCON_SBCER_AAIF_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk apex_clk = { + .name = "APEX", + .parent = &amba_clk, + .rate = 0, /* FIXME */ + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_APEX_RESET_EN, + .clk_val = U300_SYSCON_SBCER_APEX_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk video_enc_clk = { + .name = "VIDEO_ENC", + .parent = &amba_clk, + .rate = 208000000, /* this varies! */ + .hw_ctrld = false, + .reset = false, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + /* This has XGAM in the name but refers to the video encoder */ + .res_mask = U300_SYSCON_RRR_XGAM_VC_SYNC_RESET_EN, + .clk_val = U300_SYSCON_SBCER_VIDEO_ENC_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk xgam_clk = { + .name = "XGAMCLK", + .parent = &amba_clk, + .rate = 52000000, /* this varies! */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_XGAM_RESET_EN, + .clk_val = U300_SYSCON_SBCER_XGAM_CLK_EN, + .get_rate = clk_get_rate_xgamclk, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +/* This clock is used to activate the video encoder */ +static struct clk ahb_clk = { + .name = "AHB", + .parent = &amba_clk, + .rate = 52000000, /* this varies! */ + .hw_ctrld = false, /* This one is set to false due to HW bug */ + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_AHB_RESET_EN, + .clk_val = U300_SYSCON_SBCER_AHB_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_ahb_clk, +}; + + +/* + * Clocks on the AHB bridge + */ + +static struct clk ahb_subsys_clk = { + .name = "AHB_SUBSYS", + .parent = &amba_clk, + .rate = 52000000, /* this varies! */ + .hw_ctrld = true, + .reset = false, + .clk_val = U300_SYSCON_SBCER_AHB_SUBSYS_BRIDGE_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_ahb_clk, +}; + +static struct clk intcon_clk = { + .name = "INTCON", + .parent = &ahb_subsys_clk, + .rate = 52000000, /* this varies! */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_INTCON_RESET_EN, + /* INTCON can be reset but not clock-gated */ +}; + +static struct clk mspro_clk = { + .name = "MSPRO", + .parent = &ahb_subsys_clk, + .rate = 0, /* FIXME */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_MSPRO_RESET_EN, + .clk_val = U300_SYSCON_SBCER_MSPRO_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk emif_clk = { + .name = "EMIF", + .parent = &ahb_subsys_clk, + .rate = 104000000, /* this varies! */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RRR, + .res_mask = U300_SYSCON_RRR_EMIF_RESET_EN, + .clk_val = U300_SYSCON_SBCER_EMIF_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_emif_clk, +}; + + +/* + * Clocks on the FAST bridge + */ +static struct clk fast_clk = { + .name = "FAST_BRIDGE", + .parent = &amba_clk, + .rate = 13000000, /* this varies! */ + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_FAST_BRIDGE_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk mmcsd_clk = { + .name = "MCLK", + .parent = &fast_clk, + .rate = 18900000, /* this varies! */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_MMC_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_MMC_CLK_EN, + .get_rate = clk_get_rate_mclk, + .set_rate = clk_set_rate_mclk, + .round_rate = clk_round_rate_mclk, + .disable = syscon_clk_disable, + .enable = syscon_clk_enable, +}; + +static struct clk i2s0_clk = { + .name = "i2s0", + .parent = &fast_clk, + .rate = 26000000, /* this varies! */ + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_PCM_I2S0_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_I2S0_CORE_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_i2s_i2c_spi, +}; + +static struct clk i2s1_clk = { + .name = "i2s1", + .parent = &fast_clk, + .rate = 26000000, /* this varies! */ + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_PCM_I2S1_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_I2S1_CORE_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_i2s_i2c_spi, +}; + +static struct clk i2c0_clk = { + .name = "I2C0", + .parent = &fast_clk, + .rate = 26000000, /* this varies! */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_I2C0_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_I2C0_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_i2s_i2c_spi, +}; + +static struct clk i2c1_clk = { + .name = "I2C1", + .parent = &fast_clk, + .rate = 26000000, /* this varies! */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_I2C1_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_I2C1_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_i2s_i2c_spi, +}; + +static struct clk spi_clk = { + .name = "SPI", + .parent = &fast_clk, + .rate = 26000000, /* this varies! */ + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_SPI_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_SPI_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, + .get_rate = clk_get_rate_i2s_i2c_spi, +}; + +#ifdef CONFIG_MACH_U300_BS335 +static struct clk uart1_clk = { + .name = "UART1", + .parent = &fast_clk, + .rate = 13000000, + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RFR, + .res_mask = U300_SYSCON_RFR_UART1_RESET_ENABLE, + .clk_val = U300_SYSCON_SBCER_UART1_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; +#endif + + +/* + * Clocks on the SLOW bridge + */ +static struct clk slow_clk = { + .name = "SLOW_BRIDGE", + .parent = &amba_clk, + .rate = 13000000, + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_SLOW_BRIDGE_RESET_EN, + .clk_val = U300_SYSCON_SBCER_SLOW_BRIDGE_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +/* TODO: implement SYSCON clock? */ + +static struct clk wdog_clk = { + .name = "WDOG", + .parent = &slow_clk, + .hw_ctrld = false, + .rate = 32768, + .reset = false, + /* This is always on, cannot be enabled/disabled or reset */ +}; + +/* This one is hardwired to PLL13 */ +static struct clk uart_clk = { + .name = "UARTCLK", + .parent = &slow_clk, + .rate = 13000000, + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_UART_RESET_EN, + .clk_val = U300_SYSCON_SBCER_UART_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk keypad_clk = { + .name = "KEYPAD", + .parent = &slow_clk, + .rate = 32768, + .hw_ctrld = false, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_KEYPAD_RESET_EN, + .clk_val = U300_SYSCON_SBCER_KEYPAD_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk gpio_clk = { + .name = "GPIO", + .parent = &slow_clk, + .rate = 13000000, + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_GPIO_RESET_EN, + .clk_val = U300_SYSCON_SBCER_GPIO_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk rtc_clk = { + .name = "RTC", + .parent = &slow_clk, + .rate = 32768, + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_RTC_RESET_EN, + /* This clock is always on, cannot be enabled/disabled */ +}; + +static struct clk bustr_clk = { + .name = "BUSTR", + .parent = &slow_clk, + .rate = 13000000, + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_BTR_RESET_EN, + .clk_val = U300_SYSCON_SBCER_BTR_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk evhist_clk = { + .name = "EVHIST", + .parent = &slow_clk, + .rate = 13000000, + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_EH_RESET_EN, + .clk_val = U300_SYSCON_SBCER_EH_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk timer_clk = { + .name = "TIMER", + .parent = &slow_clk, + .rate = 13000000, + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_ACC_TMR_RESET_EN, + .clk_val = U300_SYSCON_SBCER_ACC_TMR_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +static struct clk app_timer_clk = { + .name = "TIMER_APP", + .parent = &slow_clk, + .rate = 13000000, + .hw_ctrld = true, + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_APP_TMR_RESET_EN, + .clk_val = U300_SYSCON_SBCER_APP_TMR_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; + +#ifdef CONFIG_MACH_U300_BS335 +static struct clk ppm_clk = { + .name = "PPM", + .parent = &slow_clk, + .rate = 0, /* FIXME */ + .hw_ctrld = true, /* TODO: Look up if it is hw ctrld or not */ + .reset = true, + .res_reg = U300_SYSCON_VBASE + U300_SYSCON_RSR, + .res_mask = U300_SYSCON_RSR_PPM_RESET_EN, + .clk_val = U300_SYSCON_SBCER_PPM_CLK_EN, + .enable = syscon_clk_enable, + .disable = syscon_clk_disable, +}; +#endif + +#define DEF_LOOKUP(devid, clkref) \ + { \ + .dev_id = devid, \ + .clk = clkref, \ + } + +/* + * Here we only define clocks that are meaningful to + * look up through clockdevice. + */ +static struct clk_lookup lookups[] = { + /* Connected directly to the AMBA bus */ + DEF_LOOKUP("amba", &amba_clk), + DEF_LOOKUP("cpu", &cpu_clk), + DEF_LOOKUP("nandif", &nandif_clk), + DEF_LOOKUP("semi", &semi_clk), +#ifdef CONFIG_MACH_U300_BS335 + DEF_LOOKUP("isp", &isp_clk), + DEF_LOOKUP("cds", &cds_clk), +#endif + DEF_LOOKUP("dma", &dma_clk), + DEF_LOOKUP("aaif", &aaif_clk), + DEF_LOOKUP("apex", &apex_clk), + DEF_LOOKUP("video_enc", &video_enc_clk), + DEF_LOOKUP("xgam", &xgam_clk), + DEF_LOOKUP("ahb", &ahb_clk), + /* AHB bridge clocks */ + DEF_LOOKUP("ahb", &ahb_subsys_clk), + DEF_LOOKUP("intcon", &intcon_clk), + DEF_LOOKUP("mspro", &mspro_clk), + DEF_LOOKUP("pl172", &emif_clk), + /* FAST bridge clocks */ + DEF_LOOKUP("fast", &fast_clk), + DEF_LOOKUP("mmci", &mmcsd_clk), + /* + * The .0 and .1 identifiers on these comes from the platform device + * .id field and are assigned when the platform devices are registered. + */ + DEF_LOOKUP("i2s.0", &i2s0_clk), + DEF_LOOKUP("i2s.1", &i2s1_clk), + DEF_LOOKUP("stddci2c.0", &i2c0_clk), + DEF_LOOKUP("stddci2c.1", &i2c1_clk), + DEF_LOOKUP("pl022", &spi_clk), +#ifdef CONFIG_MACH_U300_BS335 + DEF_LOOKUP("uart1", &uart1_clk), +#endif + /* SLOW bridge clocks */ + DEF_LOOKUP("slow", &slow_clk), + DEF_LOOKUP("wdog", &wdog_clk), + DEF_LOOKUP("uart0", &uart_clk), + DEF_LOOKUP("apptimer", &app_timer_clk), + DEF_LOOKUP("keypad", &keypad_clk), + DEF_LOOKUP("u300-gpio", &gpio_clk), + DEF_LOOKUP("rtc0", &rtc_clk), + DEF_LOOKUP("bustr", &bustr_clk), + DEF_LOOKUP("evhist", &evhist_clk), + DEF_LOOKUP("timer", &timer_clk), +#ifdef CONFIG_MACH_U300_BS335 + DEF_LOOKUP("ppm", &ppm_clk), +#endif +}; + +static void __init clk_register(void) +{ + int i; + + /* Register the lookups */ + for (i = 0; i < ARRAY_SIZE(lookups); i++) + clkdev_add(&lookups[i]); +} + +/* + * These are the clocks for cells registered as primecell drivers + * on the AMBA bus. These must be on during AMBA device registration + * since the bus probe will attempt to read magic configuration + * registers for these devices. If they are deactivated these probes + * will fail. + * + * + * Please note that on emif, both RAM and NAND is connected in dual + * RAM phones. On single RAM phones, ram is on semi and NAND on emif. + * + */ +void u300_clock_primecells(void) +{ + clk_enable(&intcon_clk); + clk_enable(&uart_clk); +#ifdef CONFIG_MACH_U300_BS335 + clk_enable(&uart1_clk); +#endif + clk_enable(&spi_clk); + + clk_enable(&mmcsd_clk); + +} +EXPORT_SYMBOL(u300_clock_primecells); + +void u300_unclock_primecells(void) +{ + + clk_disable(&intcon_clk); + clk_disable(&uart_clk); +#ifdef CONFIG_MACH_U300_BS335 + clk_disable(&uart1_clk); +#endif + clk_disable(&spi_clk); + clk_disable(&mmcsd_clk); + +} +EXPORT_SYMBOL(u300_unclock_primecells); + +/* + * The interrupt controller is enabled before the clock API is registered. + */ +void u300_enable_intcon_clock(void) +{ + clk_enable(&intcon_clk); +} +EXPORT_SYMBOL(u300_enable_intcon_clock); + +/* + * The timer is enabled before the clock API is registered. + */ +void u300_enable_timer_clock(void) +{ + clk_enable(&app_timer_clk); +} +EXPORT_SYMBOL(u300_enable_timer_clock); + +#if (defined(CONFIG_DEBUG_FS) && defined(CONFIG_U300_DEBUG)) +/* + * The following makes it possible to view the status (especially + * reference count and reset status) for the clocks in the platform + * by looking into the special file <debugfs>/u300_clocks + */ + +/* A list of all clocks in the platform */ +static struct clk *clks[] = { + /* Top node clock for the AMBA bus */ + &amba_clk, + /* Connected directly to the AMBA bus */ + &cpu_clk, + &nandif_clk, + &semi_clk, +#ifdef CONFIG_MACH_U300_BS335 + &isp_clk, + &cds_clk, +#endif + &dma_clk, + &aaif_clk, + &apex_clk, + &video_enc_clk, + &xgam_clk, + &ahb_clk, + + /* AHB bridge clocks */ + &ahb_subsys_clk, + &intcon_clk, + &mspro_clk, + &emif_clk, + /* FAST bridge clocks */ + &fast_clk, + &mmcsd_clk, + &i2s0_clk, + &i2s1_clk, + &i2c0_clk, + &i2c1_clk, + &spi_clk, +#ifdef CONFIG_MACH_U300_BS335 + &uart1_clk, +#endif + /* SLOW bridge clocks */ + &slow_clk, + &wdog_clk, + &uart_clk, + &app_timer_clk, + &keypad_clk, + &gpio_clk, + &rtc_clk, + &bustr_clk, + &evhist_clk, + &timer_clk, +#ifdef CONFIG_MACH_U300_BS335 + &ppm_clk, +#endif +}; + +static int u300_clocks_show(struct seq_file *s, void *data) +{ + struct clk *clk; + int i; + + seq_printf(s, "CLOCK DEVICE RESET STATE\t" \ + "ACTIVE\tUSERS\tHW CTRL FREQ\n"); + seq_printf(s, "---------------------------------------------" \ + "-----------------------------------------\n"); + for (i = 0; i < ARRAY_SIZE(clks); i++) { + clk = clks[i]; + if (clk != ERR_PTR(-ENOENT)) { + /* Format clock and device name nicely */ + char cdp[33]; + int chars; + + chars = snprintf(&cdp[0], 17, "%s", clk->name); + while (chars < 16) { + cdp[chars] = ' '; + chars++; + } + chars = snprintf(&cdp[16], 17, "%s", clk->dev ? + dev_name(clk->dev) : "N/A"); + while (chars < 16) { + cdp[chars+16] = ' '; + chars++; + } + cdp[32] = '\0'; + if (clk->get_rate) + seq_printf(s, + "%s%s\t%s\t%d\t%s\t%lu Hz\n", + &cdp[0], + clk->reset ? + "ASSERTED" : "RELEASED", + clk->usecount ? "ON" : "OFF", + clk->usecount, + clk->hw_ctrld ? "YES" : "NO ", + clk->get_rate(clk)); + else + seq_printf(s, + "%s%s\t%s\t%d\t%s\t" \ + "(unknown rate)\n", + &cdp[0], + clk->reset ? + "ASSERTED" : "RELEASED", + clk->usecount ? "ON" : "OFF", + clk->usecount, + clk->hw_ctrld ? "YES" : "NO "); + } + } + return 0; +} + +static int u300_clocks_open(struct inode *inode, struct file *file) +{ + return single_open(file, u300_clocks_show, NULL); +} + +static const struct file_operations u300_clocks_operations = { + .open = u300_clocks_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static void init_clk_read_procfs(void) +{ + /* Expose a simple debugfs interface to view all clocks */ + (void) debugfs_create_file("u300_clocks", S_IFREG | S_IRUGO, + NULL, NULL, &u300_clocks_operations); +} +#else +static inline void init_clk_read_procfs(void) +{ +} +#endif + +static int __init u300_clock_init(void) +{ + u16 val; + + /* + * FIXME: shall all this powermanagement stuff really live here??? + */ + + /* Set system to run at PLL208, max performance, a known state. */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR); + val &= ~U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + /* Wait for the PLL208 to lock if not locked in yet */ + while (!(readw(U300_SYSCON_VBASE + U300_SYSCON_CSR) & + U300_SYSCON_CSR_PLL208_LOCK_IND)); + + /* Power management enable */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMCR); + val |= U300_SYSCON_PMCR_PWR_MGNT_ENABLE; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMCR); + + clk_register(); + + init_clk_read_procfs(); + + /* + * Some of these may be on when we boot the system so make sure they + * are turned OFF. + */ + syscon_block_reset_enable(&timer_clk); + timer_clk.disable(&timer_clk); + + /* + * These shall be turned on by default when we boot the system + * so make sure they are ON. (Adding CPU here is a bit too much.) + * These clocks will be claimed by drivers later. + */ + syscon_block_reset_disable(&semi_clk); + syscon_block_reset_disable(&emif_clk); + semi_clk.enable(&semi_clk); + emif_clk.enable(&emif_clk); + + return 0; +} +/* initialize clocking early to be available later in the boot */ +core_initcall(u300_clock_init); diff --git a/arch/arm/mach-u300/clock.h b/arch/arm/mach-u300/clock.h new file mode 100644 index 000000000000..fc6d9ccfe7e3 --- /dev/null +++ b/arch/arm/mach-u300/clock.h @@ -0,0 +1,53 @@ +/* + * arch/arm/mach-u300/include/mach/clock.h + * + * Copyright (C) 2004 - 2005 Nokia corporation + * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> + * Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc + * Copyright (C) 2007-2009 ST-Ericsson AB + * Adopted to ST-Ericsson U300 platforms by + * Jonas Aaberg <jonas.aberg@stericsson.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef __MACH_CLOCK_H +#define __MACH_CLOCK_H + +#include <linux/clk.h> + +struct clk { + struct list_head node; + struct module *owner; + struct device *dev; + const char *name; + struct clk *parent; + + spinlock_t lock; + unsigned long rate; + bool reset; + __u16 clk_val; + __s8 usecount; + __u32 res_reg; + __u16 res_mask; + + bool hw_ctrld; + + void (*recalc) (struct clk *); + int (*set_rate) (struct clk *, unsigned long); + unsigned long (*get_rate) (struct clk *); + unsigned long (*round_rate) (struct clk *, unsigned long); + void (*init) (struct clk *); + void (*enable) (struct clk *); + void (*disable) (struct clk *); +}; + +void u300_clock_primecells(void); +void u300_unclock_primecells(void); +void u300_enable_intcon_clock(void); +void u300_enable_timer_clock(void); + +#endif diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c new file mode 100644 index 000000000000..89b3ccf35e1b --- /dev/null +++ b/arch/arm/mach-u300/core.c @@ -0,0 +1,649 @@ +/* + * + * arch/arm/mach-u300/core.c + * + * + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Core platform support, IRQ handling and device definitions. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/bitops.h> +#include <linux/device.h> +#include <linux/mm.h> +#include <linux/termios.h> +#include <linux/amba/bus.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + +#include <asm/types.h> +#include <asm/setup.h> +#include <asm/memory.h> +#include <asm/hardware/vic.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <mach/hardware.h> +#include <mach/syscon.h> + +#include "clock.h" +#include "mmc.h" + +/* + * Static I/O mappings that are needed for booting the U300 platforms. The + * only things we need are the areas where we find the timer, syscon and + * intcon, since the remaining device drivers will map their own memory + * physical to virtual as the need arise. + */ +static struct map_desc u300_io_desc[] __initdata = { + { + .virtual = U300_SLOW_PER_VIRT_BASE, + .pfn = __phys_to_pfn(U300_SLOW_PER_PHYS_BASE), + .length = SZ_64K, + .type = MT_DEVICE, + }, + { + .virtual = U300_AHB_PER_VIRT_BASE, + .pfn = __phys_to_pfn(U300_AHB_PER_PHYS_BASE), + .length = SZ_32K, + .type = MT_DEVICE, + }, + { + .virtual = U300_FAST_PER_VIRT_BASE, + .pfn = __phys_to_pfn(U300_FAST_PER_PHYS_BASE), + .length = SZ_32K, + .type = MT_DEVICE, + }, + { + .virtual = 0xffff2000, /* TCM memory */ + .pfn = __phys_to_pfn(0xffff2000), + .length = SZ_16K, + .type = MT_DEVICE, + }, + + /* + * This overlaps with the IRQ vectors etc at 0xffff0000, so these + * may have to be moved to 0x00000000 in order to use the ROM. + */ + /* + { + .virtual = U300_BOOTROM_VIRT_BASE, + .pfn = __phys_to_pfn(U300_BOOTROM_PHYS_BASE), + .length = SZ_64K, + .type = MT_ROM, + }, + */ +}; + +void __init u300_map_io(void) +{ + iotable_init(u300_io_desc, ARRAY_SIZE(u300_io_desc)); +} + +/* + * Declaration of devices found on the U300 board and + * their respective memory locations. + */ +static struct amba_device uart0_device = { + .dev = { + .init_name = "uart0", /* Slow device at 0x3000 offset */ + .platform_data = NULL, + }, + .res = { + .start = U300_UART0_BASE, + .end = U300_UART0_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + .irq = { IRQ_U300_UART0, NO_IRQ }, +}; + +/* The U335 have an additional UART1 on the APP CPU */ +#ifdef CONFIG_MACH_U300_BS335 +static struct amba_device uart1_device = { + .dev = { + .init_name = "uart1", /* Fast device at 0x7000 offset */ + .platform_data = NULL, + }, + .res = { + .start = U300_UART1_BASE, + .end = U300_UART1_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + .irq = { IRQ_U300_UART1, NO_IRQ }, +}; +#endif + +static struct amba_device pl172_device = { + .dev = { + .init_name = "pl172", /* AHB device at 0x4000 offset */ + .platform_data = NULL, + }, + .res = { + .start = U300_EMIF_CFG_BASE, + .end = U300_EMIF_CFG_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, +}; + + +/* + * Everything within this next ifdef deals with external devices connected to + * the APP SPI bus. + */ +static struct amba_device pl022_device = { + .dev = { + .coherent_dma_mask = ~0, + .init_name = "pl022", /* Fast device at 0x6000 offset */ + }, + .res = { + .start = U300_SPI_BASE, + .end = U300_SPI_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + .irq = {IRQ_U300_SPI, NO_IRQ }, + /* + * This device has a DMA channel but the Linux driver does not use + * it currently. + */ +}; + +static struct amba_device mmcsd_device = { + .dev = { + .init_name = "mmci", /* Fast device at 0x1000 offset */ + .platform_data = NULL, /* Added later */ + }, + .res = { + .start = U300_MMCSD_BASE, + .end = U300_MMCSD_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + .irq = {IRQ_U300_MMCSD_MCIINTR0, IRQ_U300_MMCSD_MCIINTR1 }, + /* + * This device has a DMA channel but the Linux driver does not use + * it currently. + */ +}; + +/* + * The order of device declaration may be important, since some devices + * have dependencies on other devices being initialized first. + */ +static struct amba_device *amba_devs[] __initdata = { + &uart0_device, +#ifdef CONFIG_MACH_U300_BS335 + &uart1_device, +#endif + &pl022_device, + &pl172_device, + &mmcsd_device, +}; + +/* Here follows a list of all hw resources that the platform devices + * allocate. Note, clock dependencies are not included + */ + +static struct resource gpio_resources[] = { + { + .start = U300_GPIO_BASE, + .end = (U300_GPIO_BASE + SZ_4K - 1), + .flags = IORESOURCE_MEM, + }, + { + .name = "gpio0", + .start = IRQ_U300_GPIO_PORT0, + .end = IRQ_U300_GPIO_PORT0, + .flags = IORESOURCE_IRQ, + }, + { + .name = "gpio1", + .start = IRQ_U300_GPIO_PORT1, + .end = IRQ_U300_GPIO_PORT1, + .flags = IORESOURCE_IRQ, + }, + { + .name = "gpio2", + .start = IRQ_U300_GPIO_PORT2, + .end = IRQ_U300_GPIO_PORT2, + .flags = IORESOURCE_IRQ, + }, +#ifdef U300_COH901571_3 + { + .name = "gpio3", + .start = IRQ_U300_GPIO_PORT3, + .end = IRQ_U300_GPIO_PORT3, + .flags = IORESOURCE_IRQ, + }, + { + .name = "gpio4", + .start = IRQ_U300_GPIO_PORT4, + .end = IRQ_U300_GPIO_PORT4, + .flags = IORESOURCE_IRQ, + }, +#ifdef CONFIG_MACH_U300_BS335 + { + .name = "gpio5", + .start = IRQ_U300_GPIO_PORT5, + .end = IRQ_U300_GPIO_PORT5, + .flags = IORESOURCE_IRQ, + }, + { + .name = "gpio6", + .start = IRQ_U300_GPIO_PORT6, + .end = IRQ_U300_GPIO_PORT6, + .flags = IORESOURCE_IRQ, + }, +#endif /* CONFIG_MACH_U300_BS335 */ +#endif /* U300_COH901571_3 */ +}; + +static struct resource keypad_resources[] = { + { + .start = U300_KEYPAD_BASE, + .end = U300_KEYPAD_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + { + .name = "coh901461-press", + .start = IRQ_U300_KEYPAD_KEYBF, + .end = IRQ_U300_KEYPAD_KEYBF, + .flags = IORESOURCE_IRQ, + }, + { + .name = "coh901461-release", + .start = IRQ_U300_KEYPAD_KEYBR, + .end = IRQ_U300_KEYPAD_KEYBR, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource rtc_resources[] = { + { + .start = U300_RTC_BASE, + .end = U300_RTC_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_U300_RTC, + .end = IRQ_U300_RTC, + .flags = IORESOURCE_IRQ, + }, +}; + +/* + * Fsmc does have IRQs: #43 and #44 (NFIF and NFIF2) + * but these are not yet used by the driver. + */ +static struct resource fsmc_resources[] = { + { + .start = U300_NAND_IF_PHYS_BASE, + .end = U300_NAND_IF_PHYS_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct resource i2c0_resources[] = { + { + .start = U300_I2C0_BASE, + .end = U300_I2C0_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_U300_I2C0, + .end = IRQ_U300_I2C0, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource i2c1_resources[] = { + { + .start = U300_I2C1_BASE, + .end = U300_I2C1_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_U300_I2C1, + .end = IRQ_U300_I2C1, + .flags = IORESOURCE_IRQ, + }, + +}; + +static struct resource wdog_resources[] = { + { + .start = U300_WDOG_BASE, + .end = U300_WDOG_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, + { + .start = IRQ_U300_WDOG, + .end = IRQ_U300_WDOG, + .flags = IORESOURCE_IRQ, + } +}; + +/* TODO: These should be protected by suitable #ifdef's */ +static struct resource ave_resources[] = { + { + .name = "AVE3e I/O Area", + .start = U300_VIDEOENC_BASE, + .end = U300_VIDEOENC_BASE + SZ_512K - 1, + .flags = IORESOURCE_MEM, + }, + { + .name = "AVE3e IRQ0", + .start = IRQ_U300_VIDEO_ENC_0, + .end = IRQ_U300_VIDEO_ENC_0, + .flags = IORESOURCE_IRQ, + }, + { + .name = "AVE3e IRQ1", + .start = IRQ_U300_VIDEO_ENC_1, + .end = IRQ_U300_VIDEO_ENC_1, + .flags = IORESOURCE_IRQ, + }, + { + .name = "AVE3e Physmem Area", + .start = 0, /* 0 will be remapped to reserved memory */ + .end = SZ_1M - 1, + .flags = IORESOURCE_MEM, + }, + /* + * The AVE3e requires two regions of 256MB that it considers + * "invisible". The hardware will not be able to access these + * adresses, so they should never point to system RAM. + */ + { + .name = "AVE3e Reserved 0", + .start = 0xd0000000, + .end = 0xd0000000 + SZ_256M - 1, + .flags = IORESOURCE_MEM, + }, + { + .name = "AVE3e Reserved 1", + .start = 0xe0000000, + .end = 0xe0000000 + SZ_256M - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device wdog_device = { + .name = "wdog", + .id = -1, + .num_resources = ARRAY_SIZE(wdog_resources), + .resource = wdog_resources, +}; + +static struct platform_device i2c0_device = { + .name = "stddci2c", + .id = 0, + .num_resources = ARRAY_SIZE(i2c0_resources), + .resource = i2c0_resources, +}; + +static struct platform_device i2c1_device = { + .name = "stddci2c", + .id = 1, + .num_resources = ARRAY_SIZE(i2c1_resources), + .resource = i2c1_resources, +}; + +static struct platform_device gpio_device = { + .name = "u300-gpio", + .id = -1, + .num_resources = ARRAY_SIZE(gpio_resources), + .resource = gpio_resources, +}; + +static struct platform_device keypad_device = { + .name = "keypad", + .id = -1, + .num_resources = ARRAY_SIZE(keypad_resources), + .resource = keypad_resources, +}; + +static struct platform_device rtc_device = { + .name = "rtc0", + .id = -1, + .num_resources = ARRAY_SIZE(rtc_resources), + .resource = rtc_resources, +}; + +static struct platform_device fsmc_device = { + .name = "nandif", + .id = -1, + .num_resources = ARRAY_SIZE(fsmc_resources), + .resource = fsmc_resources, +}; + +static struct platform_device ave_device = { + .name = "video_enc", + .id = -1, + .num_resources = ARRAY_SIZE(ave_resources), + .resource = ave_resources, +}; + +/* + * Notice that AMBA devices are initialized before platform devices. + * + */ +static struct platform_device *platform_devs[] __initdata = { + &i2c0_device, + &i2c1_device, + &keypad_device, + &rtc_device, + &gpio_device, + &fsmc_device, + &wdog_device, + &ave_device +}; + + +/* + * Interrupts: the U300 platforms have two pl190 ARM PrimeCells connected + * together so some interrupts are connected to the first one and some + * to the second one. + */ +void __init u300_init_irq(void) +{ + u32 mask[2] = {0, 0}; + int i; + + for (i = 0; i < NR_IRQS; i++) + set_bit(i, (unsigned long *) &mask[0]); + u300_enable_intcon_clock(); + vic_init((void __iomem *) U300_INTCON0_VBASE, 0, mask[0], 0); + vic_init((void __iomem *) U300_INTCON1_VBASE, 32, mask[1], 0); +} + + +/* + * U300 platforms peripheral handling + */ +struct db_chip { + u16 chipid; + const char *name; +}; + +/* + * This is a list of the Digital Baseband chips used in the U300 platform. + */ +static struct db_chip db_chips[] __initdata = { + { + .chipid = 0xb800, + .name = "DB3000", + }, + { + .chipid = 0xc000, + .name = "DB3100", + }, + { + .chipid = 0xc800, + .name = "DB3150", + }, + { + .chipid = 0xd800, + .name = "DB3200", + }, + { + .chipid = 0xe000, + .name = "DB3250", + }, + { + .chipid = 0xe800, + .name = "DB3210", + }, + { + .chipid = 0xf000, + .name = "DB3350 P1x", + }, + { + .chipid = 0xf100, + .name = "DB3350 P2x", + }, + { + .chipid = 0x0000, /* List terminator */ + .name = NULL, + } +}; + +static void u300_init_check_chip(void) +{ + + u16 val; + struct db_chip *chip; + const char *chipname; + const char unknown[] = "UNKNOWN"; + + /* Read out and print chip ID */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CIDR); + /* This is in funky bigendian order... */ + val = (val & 0xFFU) << 8 | (val >> 8); + chip = db_chips; + chipname = unknown; + + for ( ; chip->chipid; chip++) { + if (chip->chipid == (val & 0xFF00U)) { + chipname = chip->name; + break; + } + } + printk(KERN_INFO "Initializing U300 system on %s baseband chip " \ + "(chip ID 0x%04x)\n", chipname, val); + +#ifdef CONFIG_MACH_U300_BS26 + if ((val & 0xFF00U) != 0xc800) { + printk(KERN_ERR "Platform configured for BS25/BS26 " \ + "with DB3150 but %s detected, expect problems!", + chipname); + } +#endif +#ifdef CONFIG_MACH_U300_BS330 + if ((val & 0xFF00U) != 0xd800) { + printk(KERN_ERR "Platform configured for BS330 " \ + "with DB3200 but %s detected, expect problems!", + chipname); + } +#endif +#ifdef CONFIG_MACH_U300_BS335 + if ((val & 0xFF00U) != 0xf000 && (val & 0xFF00U) != 0xf100) { + printk(KERN_ERR "Platform configured for BS365 " \ + " with DB3350 but %s detected, expect problems!", + chipname); + } +#endif +#ifdef CONFIG_MACH_U300_BS365 + if ((val & 0xFF00U) != 0xe800) { + printk(KERN_ERR "Platform configured for BS365 " \ + "with DB3210 but %s detected, expect problems!", + chipname); + } +#endif + + +} + +/* + * Some devices and their resources require reserved physical memory from + * the end of the available RAM. This function traverses the list of devices + * and assigns actual adresses to these. + */ +static void __init u300_assign_physmem(void) +{ + unsigned long curr_start = __pa(high_memory); + int i, j; + + for (i = 0; i < ARRAY_SIZE(platform_devs); i++) { + for (j = 0; j < platform_devs[i]->num_resources; j++) { + struct resource *const res = + &platform_devs[i]->resource[j]; + + if (IORESOURCE_MEM == res->flags && + 0 == res->start) { + res->start = curr_start; + res->end += curr_start; + curr_start += (res->end - res->start + 1); + + printk(KERN_INFO "core.c: Mapping RAM " \ + "%#x-%#x to device %s:%s\n", + res->start, res->end, + platform_devs[i]->name, res->name); + } + } + } +} + +void __init u300_init_devices(void) +{ + int i; + u16 val; + + /* Check what platform we run and print some status information */ + u300_init_check_chip(); + + /* Set system to run at PLL208, max performance, a known state. */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_CCR); + val &= ~U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_CCR); + /* Wait for the PLL208 to lock if not locked in yet */ + while (!(readw(U300_SYSCON_VBASE + U300_SYSCON_CSR) & + U300_SYSCON_CSR_PLL208_LOCK_IND)); + + /* Register the AMBA devices in the AMBA bus abstraction layer */ + u300_clock_primecells(); + for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { + struct amba_device *d = amba_devs[i]; + amba_device_register(d, &iomem_resource); + } + u300_unclock_primecells(); + + u300_assign_physmem(); + + /* Register the platform devices */ + platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); + +#ifndef CONFIG_MACH_U300_SEMI_IS_SHARED + /* + * Enable SEMI self refresh. Self-refresh of the SDRAM is entered when + * both subsystems are requesting this mode. + * If we not share the Acc SDRAM, this is never the case. Therefore + * enable it here from the App side. + */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_SMCR) | + U300_SYSCON_SMCR_SEMI_SREFREQ_ENABLE; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_SMCR); +#endif /* CONFIG_MACH_U300_SEMI_IS_SHARED */ +} + +static int core_module_init(void) +{ + /* + * This needs to be initialized later: it needs the input framework + * to be initialized first. + */ + return mmc_init(&mmcsd_device); +} +module_init(core_module_init); diff --git a/arch/arm/mach-u300/gpio.c b/arch/arm/mach-u300/gpio.c new file mode 100644 index 000000000000..308cdb197a92 --- /dev/null +++ b/arch/arm/mach-u300/gpio.c @@ -0,0 +1,703 @@ +/* + * + * arch/arm/mach-u300/gpio.c + * + * + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * U300 GPIO module. + * This can driver either of the two basic GPIO cores + * available in the U300 platforms: + * COH 901 335 - Used in DB3150 (U300 1.0) and DB3200 (U330 1.0) + * COH 901 571/3 - Used in DB3210 (U365 2.0) and DB3350 (U335 1.0) + * Notice that you also have inline macros in <asm-arch/gpio.h> + * Author: Linus Walleij <linus.walleij@stericsson.com> + * Author: Jonas Aaberg <jonas.aberg@stericsson.com> + * + */ +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + +/* Need access to SYSCON registers for PADmuxing */ +#include <mach/syscon.h> + +#include "padmux.h" + +/* Reference to GPIO block clock */ +static struct clk *clk; + +/* Memory resource */ +static struct resource *memres; +static void __iomem *virtbase; +static struct device *gpiodev; + +struct u300_gpio_port { + const char *name; + int irq; + int number; +}; + + +static struct u300_gpio_port gpio_ports[] = { + { + .name = "gpio0", + .number = 0, + }, + { + .name = "gpio1", + .number = 1, + }, + { + .name = "gpio2", + .number = 2, + }, +#ifdef U300_COH901571_3 + { + .name = "gpio3", + .number = 3, + }, + { + .name = "gpio4", + .number = 4, + }, +#ifdef CONFIG_MACH_U300_BS335 + { + .name = "gpio5", + .number = 5, + }, + { + .name = "gpio6", + .number = 6, + }, +#endif +#endif + +}; + + +#ifdef U300_COH901571_3 + +/* Default input value */ +#define DEFAULT_OUTPUT_LOW 0 +#define DEFAULT_OUTPUT_HIGH 1 + +/* GPIO Pull-Up status */ +#define DISABLE_PULL_UP 0 +#define ENABLE_PULL_UP 1 + +#define GPIO_NOT_USED 0 +#define GPIO_IN 1 +#define GPIO_OUT 2 + +struct u300_gpio_configuration_data { + unsigned char pin_usage; + unsigned char default_output_value; + unsigned char pull_up; +}; + +/* Initial configuration */ +const struct u300_gpio_configuration_data +u300_gpio_config[U300_GPIO_NUM_PORTS][U300_GPIO_PINS_PER_PORT] = { +#ifdef CONFIG_MACH_U300_BS335 + /* Port 0, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_HIGH, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + }, + /* Port 1, pins 0-7 */ + { + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_HIGH, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + }, + /* Port 2, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP} + }, + /* Port 3, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + }, + /* Port 4, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + }, + /* Port 5, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + }, + /* Port 6, pind 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + } +#endif + +#ifdef CONFIG_MACH_U300_BS365 + /* Port 0, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + }, + /* Port 1, pins 0-7 */ + { + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_HIGH, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP} + }, + /* Port 2, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, DISABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP} + }, + /* Port 3, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP} + }, + /* Port 4, pins 0-7 */ + { + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_IN, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + /* These 4 pins doesn't exist on DB3210 */ + {GPIO_OUT, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP}, + {GPIO_OUT, DEFAULT_OUTPUT_LOW, ENABLE_PULL_UP} + } +#endif +}; +#endif + + +/* No users == we can power down GPIO */ +static int gpio_users; + +struct gpio_struct { + int (*callback)(void *); + void *data; + int users; +}; + +static struct gpio_struct gpio_pin[U300_GPIO_MAX]; + +/* + * Let drivers register callback in order to get notified when there is + * an interrupt on the gpio pin + */ +int gpio_register_callback(unsigned gpio, int (*func)(void *arg), void *data) +{ + if (gpio_pin[gpio].callback) + dev_warn(gpiodev, "%s: WARNING: callback already " + "registered for gpio pin#%d\n", __func__, gpio); + gpio_pin[gpio].callback = func; + gpio_pin[gpio].data = data; + + return 0; +} +EXPORT_SYMBOL(gpio_register_callback); + +int gpio_unregister_callback(unsigned gpio) +{ + if (!gpio_pin[gpio].callback) + dev_warn(gpiodev, "%s: WARNING: callback already " + "unregistered for gpio pin#%d\n", __func__, gpio); + gpio_pin[gpio].callback = NULL; + gpio_pin[gpio].data = NULL; + + return 0; +} +EXPORT_SYMBOL(gpio_unregister_callback); + +int gpio_request(unsigned gpio, const char *label) +{ + if (gpio_pin[gpio].users) + return -EINVAL; + else + gpio_pin[gpio].users++; + + gpio_users++; + + return 0; +} +EXPORT_SYMBOL(gpio_request); + +void gpio_free(unsigned gpio) +{ + gpio_users--; + gpio_pin[gpio].users--; + if (unlikely(gpio_pin[gpio].users < 0)) { + dev_warn(gpiodev, "warning: gpio#%d release mismatch\n", + gpio); + gpio_pin[gpio].users = 0; + } + + return; +} +EXPORT_SYMBOL(gpio_free); + +/* This returns zero or nonzero */ +int gpio_get_value(unsigned gpio) +{ + return readl(virtbase + U300_GPIO_PXPDIR + + PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING) & (1 << (gpio & 0x07)); +} +EXPORT_SYMBOL(gpio_get_value); + +/* + * We hope that the compiler will optimize away the unused branch + * in case "value" is a constant + */ +void gpio_set_value(unsigned gpio, int value) +{ + u32 val; + unsigned long flags; + + local_irq_save(flags); + if (value) { + /* set */ + val = readl(virtbase + U300_GPIO_PXPDOR + + PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING) + & (1 << (gpio & 0x07)); + writel(val | (1 << (gpio & 0x07)), virtbase + + U300_GPIO_PXPDOR + + PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING); + } else { + /* clear */ + val = readl(virtbase + U300_GPIO_PXPDOR + + PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING) + & (1 << (gpio & 0x07)); + writel(val & ~(1 << (gpio & 0x07)), virtbase + + U300_GPIO_PXPDOR + + PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING); + } + local_irq_restore(flags); +} +EXPORT_SYMBOL(gpio_set_value); + +int gpio_direction_input(unsigned gpio) +{ + unsigned long flags; + u32 val; + + if (gpio > U300_GPIO_MAX) + return -EINVAL; + + local_irq_save(flags); + val = readl(virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + /* Mask out this pin*/ + val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK << ((gpio & 0x07) << 1)); + /* This is not needed since it sets the bits to zero.*/ + /* val |= (U300_GPIO_PXPCR_PIN_MODE_INPUT << (gpio*2)); */ + writel(val, virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + local_irq_restore(flags); + return 0; +} +EXPORT_SYMBOL(gpio_direction_input); + +int gpio_direction_output(unsigned gpio, int value) +{ + unsigned long flags; + u32 val; + + if (gpio > U300_GPIO_MAX) + return -EINVAL; + + local_irq_save(flags); + val = readl(virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + /* Mask out this pin */ + val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK << ((gpio & 0x07) << 1)); + /* + * FIXME: configure for push/pull, open drain or open source per pin + * in setup. The current driver will only support push/pull. + */ + val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL + << ((gpio & 0x07) << 1)); + writel(val, virtbase + U300_GPIO_PXPCR + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + gpio_set_value(gpio, value); + local_irq_restore(flags); + return 0; +} +EXPORT_SYMBOL(gpio_direction_output); + +/* + * Enable an IRQ, edge is rising edge (!= 0) or falling edge (==0). + */ +void enable_irq_on_gpio_pin(unsigned gpio, int edge) +{ + u32 val; + unsigned long flags; + local_irq_save(flags); + + val = readl(virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + val |= (1 << (gpio & 0x07)); + writel(val, virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + val = readl(virtbase + U300_GPIO_PXICR + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + if (edge) + val |= (1 << (gpio & 0x07)); + else + val &= ~(1 << (gpio & 0x07)); + writel(val, virtbase + U300_GPIO_PXICR + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + local_irq_restore(flags); +} +EXPORT_SYMBOL(enable_irq_on_gpio_pin); + +void disable_irq_on_gpio_pin(unsigned gpio) +{ + u32 val; + unsigned long flags; + + local_irq_save(flags); + val = readl(virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + val &= ~(1 << (gpio & 0x07)); + writel(val, virtbase + U300_GPIO_PXIEN + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + local_irq_restore(flags); +} +EXPORT_SYMBOL(disable_irq_on_gpio_pin); + +/* Enable (value == 0) or disable (value == 1) internal pullup */ +void gpio_pullup(unsigned gpio, int value) +{ + u32 val; + unsigned long flags; + + local_irq_save(flags); + if (value) { + val = readl(virtbase + U300_GPIO_PXPER + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + writel(val | (1 << (gpio & 0x07)), virtbase + U300_GPIO_PXPER + + PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING); + } else { + val = readl(virtbase + U300_GPIO_PXPER + PIN_TO_PORT(gpio) * + U300_GPIO_PORTX_SPACING); + writel(val & ~(1 << (gpio & 0x07)), virtbase + U300_GPIO_PXPER + + PIN_TO_PORT(gpio) * U300_GPIO_PORTX_SPACING); + } + local_irq_restore(flags); +} +EXPORT_SYMBOL(gpio_pullup); + +static irqreturn_t gpio_irq_handler(int irq, void *dev_id) +{ + struct u300_gpio_port *port = dev_id; + u32 val; + int pin; + + /* Read event register */ + val = readl(virtbase + U300_GPIO_PXIEV + port->number * + U300_GPIO_PORTX_SPACING); + /* Mask with enable register */ + val &= readl(virtbase + U300_GPIO_PXIEV + port->number * + U300_GPIO_PORTX_SPACING); + /* Mask relevant bits */ + val &= U300_GPIO_PXIEV_ALL_IRQ_EVENT_MASK; + /* ACK IRQ (clear event) */ + writel(val, virtbase + U300_GPIO_PXIEV + port->number * + U300_GPIO_PORTX_SPACING); + /* Print message */ + while (val != 0) { + unsigned gpio; + + pin = __ffs(val); + /* mask off this pin */ + val &= ~(1 << pin); + gpio = (port->number << 3) + pin; + + if (gpio_pin[gpio].callback) + (void)gpio_pin[gpio].callback(gpio_pin[gpio].data); + else + dev_dbg(gpiodev, "stray GPIO IRQ on line %d\n", + gpio); + } + return IRQ_HANDLED; +} + +static void gpio_set_initial_values(void) +{ +#ifdef U300_COH901571_3 + int i, j; + unsigned long flags; + u32 val; + + /* Write default values to all pins */ + for (i = 0; i < U300_GPIO_NUM_PORTS; i++) { + val = 0; + for (j = 0; j < 8; j++) + val |= (u32) (u300_gpio_config[i][j].default_output_value != DEFAULT_OUTPUT_LOW) << j; + local_irq_save(flags); + writel(val, virtbase + U300_GPIO_PXPDOR + i * U300_GPIO_PORTX_SPACING); + local_irq_restore(flags); + } + + /* + * Put all pins that are set to either 'GPIO_OUT' or 'GPIO_NOT_USED' + * to output and 'GPIO_IN' to input for each port. And initalize + * default value on outputs. + */ + for (i = 0; i < U300_GPIO_NUM_PORTS; i++) { + for (j = 0; j < U300_GPIO_PINS_PER_PORT; j++) { + local_irq_save(flags); + val = readl(virtbase + U300_GPIO_PXPCR + + i * U300_GPIO_PORTX_SPACING); + /* Mask out this pin */ + val &= ~(U300_GPIO_PXPCR_PIN_MODE_MASK << (j << 1)); + + if (u300_gpio_config[i][j].pin_usage != GPIO_IN) + val |= (U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL << (j << 1)); + writel(val, virtbase + U300_GPIO_PXPCR + + i * U300_GPIO_PORTX_SPACING); + local_irq_restore(flags); + } + } + + /* Enable or disable the internal pull-ups in the GPIO ASIC block */ + for (i = 0; i < U300_GPIO_MAX; i++) { + val = 0; + for (j = 0; j < 8; j++) + val |= (u32)((u300_gpio_config[i][j].pull_up == DISABLE_PULL_UP)) << j; + local_irq_save(flags); + writel(val, virtbase + U300_GPIO_PXPER + i * U300_GPIO_PORTX_SPACING); + local_irq_restore(flags); + } +#endif +} + +static int __init gpio_probe(struct platform_device *pdev) +{ + u32 val; + int err = 0; + int i; + int num_irqs; + + gpiodev = &pdev->dev; + memset(gpio_pin, 0, sizeof(gpio_pin)); + + /* Get GPIO clock */ + clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(clk)) { + err = PTR_ERR(clk); + dev_err(gpiodev, "could not get GPIO clock\n"); + goto err_no_clk; + } + err = clk_enable(clk); + if (err) { + dev_err(gpiodev, "could not enable GPIO clock\n"); + goto err_no_clk_enable; + } + + memres = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!memres) + goto err_no_resource; + + if (request_mem_region(memres->start, memres->end - memres->start, "GPIO Controller") + == NULL) { + err = -ENODEV; + goto err_no_ioregion; + } + + virtbase = ioremap(memres->start, resource_size(memres)); + if (!virtbase) { + err = -ENOMEM; + goto err_no_ioremap; + } + dev_info(gpiodev, "remapped 0x%08x to %p\n", + memres->start, virtbase); + +#ifdef U300_COH901335 + dev_info(gpiodev, "initializing GPIO Controller COH 901 335\n"); + /* Turn on the GPIO block */ + writel(U300_GPIO_CR_BLOCK_CLOCK_ENABLE, virtbase + U300_GPIO_CR); +#endif + +#ifdef U300_COH901571_3 + dev_info(gpiodev, "initializing GPIO Controller COH 901 571/3\n"); + val = readl(virtbase + U300_GPIO_CR); + dev_info(gpiodev, "COH901571/3 block version: %d, " \ + "number of cores: %d\n", + ((val & 0x0000FE00) >> 9), + ((val & 0x000001FC) >> 2)); + writel(U300_GPIO_CR_BLOCK_CLKRQ_ENABLE, virtbase + U300_GPIO_CR); +#endif + + /* Set up some padmuxing here */ +#ifdef CONFIG_MMC + pmx_set_mission_mode_mmc(); +#endif +#ifdef CONFIG_SPI_PL022 + pmx_set_mission_mode_spi(); +#endif + + gpio_set_initial_values(); + + for (num_irqs = 0 ; num_irqs < U300_GPIO_NUM_PORTS; num_irqs++) { + + gpio_ports[num_irqs].irq = + platform_get_irq_byname(pdev, + gpio_ports[num_irqs].name); + + err = request_irq(gpio_ports[num_irqs].irq, + gpio_irq_handler, IRQF_DISABLED, + gpio_ports[num_irqs].name, + &gpio_ports[num_irqs]); + if (err) { + dev_err(gpiodev, "cannot allocate IRQ for %s!\n", + gpio_ports[num_irqs].name); + goto err_no_irq; + } + /* Turns off PortX_irq_force */ + writel(0x0, virtbase + U300_GPIO_PXIFR + + num_irqs * U300_GPIO_PORTX_SPACING); + } + + return 0; + + err_no_irq: + for (i = 0; i < num_irqs; i++) + free_irq(gpio_ports[i].irq, &gpio_ports[i]); + iounmap(virtbase); + err_no_ioremap: + release_mem_region(memres->start, memres->end - memres->start); + err_no_ioregion: + err_no_resource: + clk_disable(clk); + err_no_clk_enable: + clk_put(clk); + err_no_clk: + dev_info(gpiodev, "module ERROR:%d\n", err); + return err; +} + +static int __exit gpio_remove(struct platform_device *pdev) +{ + int i; + + /* Turn off the GPIO block */ + writel(0x00000000U, virtbase + U300_GPIO_CR); + for (i = 0 ; i < U300_GPIO_NUM_PORTS; i++) + free_irq(gpio_ports[i].irq, &gpio_ports[i]); + iounmap(virtbase); + release_mem_region(memres->start, memres->end - memres->start); + clk_disable(clk); + clk_put(clk); + return 0; +} + +static struct platform_driver gpio_driver = { + .driver = { + .name = "u300-gpio", + }, + .remove = __exit_p(gpio_remove), +}; + + +static int __init u300_gpio_init(void) +{ + return platform_driver_probe(&gpio_driver, gpio_probe); +} + +static void __exit u300_gpio_exit(void) +{ + platform_driver_unregister(&gpio_driver); +} + +arch_initcall(u300_gpio_init); +module_exit(u300_gpio_exit); + +MODULE_AUTHOR("Linus Walleij <linus.walleij@stericsson.com>"); + +#ifdef U300_COH901571_3 +MODULE_DESCRIPTION("ST-Ericsson AB COH 901 571/3 GPIO driver"); +#endif + +#ifdef U300_COH901335 +MODULE_DESCRIPTION("ST-Ericsson AB COH 901 335 GPIO driver"); +#endif + +MODULE_LICENSE("GPL"); diff --git a/arch/arm/mach-u300/include/mach/clkdev.h b/arch/arm/mach-u300/include/mach/clkdev.h new file mode 100644 index 000000000000..92e3cc872c66 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/clkdev.h @@ -0,0 +1,7 @@ +#ifndef __MACH_CLKDEV_H +#define __MACH_CLKDEV_H + +int __clk_get(struct clk *clk); +void __clk_put(struct clk *clk); + +#endif diff --git a/arch/arm/mach-u300/include/mach/debug-macro.S b/arch/arm/mach-u300/include/mach/debug-macro.S new file mode 100644 index 000000000000..f3a1cbbeeab3 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/debug-macro.S @@ -0,0 +1,22 @@ +/* + * + * arch-arm/mach-u300/include/mach/debug-macro.S + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Debugging macro include header. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#include <mach/hardware.h> + + .macro addruart,rx + /* If we move the adress using MMU, use this. */ + mrc p15, 0, \rx, c1, c0 + tst \rx, #1 @ MMU enabled? + ldreq \rx, = U300_SLOW_PER_PHYS_BASE @ MMU off, physical address + ldrne \rx, = U300_SLOW_PER_VIRT_BASE @ MMU on, virtual address + orr \rx, \rx, #0x00003000 + .endm + +#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mach-u300/include/mach/entry-macro.S b/arch/arm/mach-u300/include/mach/entry-macro.S new file mode 100644 index 000000000000..20731ae39d38 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/entry-macro.S @@ -0,0 +1,40 @@ +/* + * + * arch-arm/mach-u300/include/mach/entry-macro.S + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Low-level IRQ helper macros for ST-Ericsson U300 + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#include <mach/hardware.h> +#include <asm/hardware/vic.h> + + .macro disable_fiq + .endm + + .macro get_irqnr_preamble, base, tmp + .endm + + .macro arch_ret_to_user, tmp1, tmp2 + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + ldr \base, = U300_AHB_PER_VIRT_BASE-U300_AHB_PER_PHYS_BASE+U300_INTCON0_BASE + ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status + mov \irqnr, #0 + teq \irqstat, #0 + bne 1002f +1001: ldr \base, = U300_AHB_PER_VIRT_BASE-U300_AHB_PER_PHYS_BASE+U300_INTCON1_BASE + ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status + mov \irqnr, #32 + teq \irqstat, #0 + beq 1003f +1002: tst \irqstat, #1 + bne 1003f + add \irqnr, \irqnr, #1 + movs \irqstat, \irqstat, lsr #1 + bne 1002b +1003: /* EQ will be set if no irqs pending */ + .endm diff --git a/arch/arm/mach-u300/include/mach/gpio.h b/arch/arm/mach-u300/include/mach/gpio.h new file mode 100644 index 000000000000..c8174128d7eb --- /dev/null +++ b/arch/arm/mach-u300/include/mach/gpio.h @@ -0,0 +1,290 @@ +/* + * + * arch/arm/mach-u300/include/mach/gpio.h + * + * + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * GPIO block resgister definitions and inline macros for + * U300 GPIO COH 901 335 or COH 901 571/3 + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ + +#ifndef __MACH_U300_GPIO_H +#define __MACH_U300_GPIO_H + +#include <linux/kernel.h> +#include <linux/io.h> +#include <mach/hardware.h> +#include <asm/irq.h> + +/* Switch type depending on platform/chip variant */ +#if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) +#define U300_COH901335 +#endif +#if defined(CONFIG_MACH_U300_BS365) || defined(CONFIG_MACH_U300_BS335) +#define U300_COH901571_3 +#endif + +/* Get base address for regs here */ +#include "u300-regs.h" +/* IRQ numbers */ +#include "irqs.h" + +/* + * This is the GPIO block definitions. GPIO (General Purpose I/O) can be + * used for anything, and often is. The event/enable etc figures are for + * the lowermost pin (pin 0 on each port), shift this left to match your + * pin if you're gonna use these values. + */ +#ifdef U300_COH901335 +#define U300_GPIO_PORTX_SPACING (0x1C) +/* Port X Pin Data Register 32bit, this is both input and output (R/W) */ +#define U300_GPIO_PXPDIR (0x00) +#define U300_GPIO_PXPDOR (0x00) +/* Port X Pin Config Register 32bit (R/W) */ +#define U300_GPIO_PXPCR (0x04) +#define U300_GPIO_PXPCR_ALL_PINS_MODE_MASK (0x0000FFFFUL) +#define U300_GPIO_PXPCR_PIN_MODE_MASK (0x00000003UL) +#define U300_GPIO_PXPCR_PIN_MODE_SHIFT (0x00000002UL) +#define U300_GPIO_PXPCR_PIN_MODE_INPUT (0x00000000UL) +#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL (0x00000001UL) +#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_DRAIN (0x00000002UL) +#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_SOURCE (0x00000003UL) +/* Port X Interrupt Event Register 32bit (R/W) */ +#define U300_GPIO_PXIEV (0x08) +#define U300_GPIO_PXIEV_ALL_IRQ_EVENT_MASK (0x000000FFUL) +#define U300_GPIO_PXIEV_IRQ_EVENT (0x00000001UL) +/* Port X Interrupt Enable Register 32bit (R/W) */ +#define U300_GPIO_PXIEN (0x0C) +#define U300_GPIO_PXIEN_ALL_IRQ_ENABLE_MASK (0x000000FFUL) +#define U300_GPIO_PXIEN_IRQ_ENABLE (0x00000001UL) +/* Port X Interrupt Force Register 32bit (R/W) */ +#define U300_GPIO_PXIFR (0x10) +#define U300_GPIO_PXIFR_ALL_IRQ_FORCE_MASK (0x000000FFUL) +#define U300_GPIO_PXIFR_IRQ_FORCE (0x00000001UL) +/* Port X Interrupt Config Register 32bit (R/W) */ +#define U300_GPIO_PXICR (0x14) +#define U300_GPIO_PXICR_ALL_IRQ_CONFIG_MASK (0x000000FFUL) +#define U300_GPIO_PXICR_IRQ_CONFIG_MASK (0x00000001UL) +#define U300_GPIO_PXICR_IRQ_CONFIG_FALLING_EDGE (0x00000000UL) +#define U300_GPIO_PXICR_IRQ_CONFIG_RISING_EDGE (0x00000001UL) +/* Port X Pull-up Enable Register 32bit (R/W) */ +#define U300_GPIO_PXPER (0x18) +#define U300_GPIO_PXPER_ALL_PULL_UP_DISABLE_MASK (0x000000FFUL) +#define U300_GPIO_PXPER_PULL_UP_DISABLE (0x00000001UL) +/* Control Register 32bit (R/W) */ +#define U300_GPIO_CR (0x54) +#define U300_GPIO_CR_BLOCK_CLOCK_ENABLE (0x00000001UL) +/* three ports of 8 bits each = GPIO pins 0..23 */ +#define U300_GPIO_NUM_PORTS 3 +#define U300_GPIO_PINS_PER_PORT 8 +#define U300_GPIO_MAX (U300_GPIO_PINS_PER_PORT * U300_GPIO_NUM_PORTS - 1) +#endif + +#ifdef U300_COH901571_3 +/* + * Control Register 32bit (R/W) + * bit 15-9 (mask 0x0000FE00) contains the number of cores. 8*cores + * gives the number of GPIO pins. + * bit 8-2 (mask 0x000001FC) contains the core version ID. + */ +#define U300_GPIO_CR (0x00) +#define U300_GPIO_CR_SYNC_SEL_ENABLE (0x00000002UL) +#define U300_GPIO_CR_BLOCK_CLKRQ_ENABLE (0x00000001UL) +#define U300_GPIO_PORTX_SPACING (0x30) +/* Port X Pin Data INPUT Register 32bit (R/W) */ +#define U300_GPIO_PXPDIR (0x04) +/* Port X Pin Data OUTPUT Register 32bit (R/W) */ +#define U300_GPIO_PXPDOR (0x08) +/* Port X Pin Config Register 32bit (R/W) */ +#define U300_GPIO_PXPCR (0x0C) +#define U300_GPIO_PXPCR_ALL_PINS_MODE_MASK (0x0000FFFFUL) +#define U300_GPIO_PXPCR_PIN_MODE_MASK (0x00000003UL) +#define U300_GPIO_PXPCR_PIN_MODE_SHIFT (0x00000002UL) +#define U300_GPIO_PXPCR_PIN_MODE_INPUT (0x00000000UL) +#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_PUSH_PULL (0x00000001UL) +#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_DRAIN (0x00000002UL) +#define U300_GPIO_PXPCR_PIN_MODE_OUTPUT_OPEN_SOURCE (0x00000003UL) +/* Port X Pull-up Enable Register 32bit (R/W) */ +#define U300_GPIO_PXPER (0x10) +#define U300_GPIO_PXPER_ALL_PULL_UP_DISABLE_MASK (0x000000FFUL) +#define U300_GPIO_PXPER_PULL_UP_DISABLE (0x00000001UL) +/* Port X Interrupt Event Register 32bit (R/W) */ +#define U300_GPIO_PXIEV (0x14) +#define U300_GPIO_PXIEV_ALL_IRQ_EVENT_MASK (0x000000FFUL) +#define U300_GPIO_PXIEV_IRQ_EVENT (0x00000001UL) +/* Port X Interrupt Enable Register 32bit (R/W) */ +#define U300_GPIO_PXIEN (0x18) +#define U300_GPIO_PXIEN_ALL_IRQ_ENABLE_MASK (0x000000FFUL) +#define U300_GPIO_PXIEN_IRQ_ENABLE (0x00000001UL) +/* Port X Interrupt Force Register 32bit (R/W) */ +#define U300_GPIO_PXIFR (0x1C) +#define U300_GPIO_PXIFR_ALL_IRQ_FORCE_MASK (0x000000FFUL) +#define U300_GPIO_PXIFR_IRQ_FORCE (0x00000001UL) +/* Port X Interrupt Config Register 32bit (R/W) */ +#define U300_GPIO_PXICR (0x20) +#define U300_GPIO_PXICR_ALL_IRQ_CONFIG_MASK (0x000000FFUL) +#define U300_GPIO_PXICR_IRQ_CONFIG_MASK (0x00000001UL) +#define U300_GPIO_PXICR_IRQ_CONFIG_FALLING_EDGE (0x00000000UL) +#define U300_GPIO_PXICR_IRQ_CONFIG_RISING_EDGE (0x00000001UL) +#ifdef CONFIG_MACH_U300_BS335 +/* seven ports of 8 bits each = GPIO pins 0..55 */ +#define U300_GPIO_NUM_PORTS 7 +#else +/* five ports of 8 bits each = GPIO pins 0..39 */ +#define U300_GPIO_NUM_PORTS 5 +#endif +#define U300_GPIO_PINS_PER_PORT 8 +#define U300_GPIO_MAX (U300_GPIO_PINS_PER_PORT * U300_GPIO_NUM_PORTS - 1) +#endif + +/* + * Individual pin assignments for the B26/S26. Notice that the + * actual usage of these pins depends on the PAD MUX settings, that + * is why the same number can potentially appear several times. + * In the reference design each pin is only used for one purpose. + * These were determined by inspecting the B26/S26 schematic: + * 2/1911-ROA 128 1603 + */ +#ifdef CONFIG_MACH_U300_BS2X +#define U300_GPIO_PIN_UART_RX 0 +#define U300_GPIO_PIN_UART_TX 1 +#define U300_GPIO_PIN_GPIO02 2 /* Unrouted */ +#define U300_GPIO_PIN_GPIO03 3 /* Unrouted */ +#define U300_GPIO_PIN_CAM_SLEEP 4 +#define U300_GPIO_PIN_CAM_REG_EN 5 +#define U300_GPIO_PIN_GPIO06 6 /* Unrouted */ +#define U300_GPIO_PIN_GPIO07 7 /* Unrouted */ + +#define U300_GPIO_PIN_GPIO08 8 /* Service point SP2321 */ +#define U300_GPIO_PIN_GPIO09 9 /* Service point SP2322 */ +#define U300_GPIO_PIN_PHFSENSE 10 /* Headphone jack sensing */ +#define U300_GPIO_PIN_MMC_CLKRET 11 /* Clock return from MMC/SD card */ +#define U300_GPIO_PIN_MMC_CD 12 /* MMC Card insertion detection */ +#define U300_GPIO_PIN_FLIPSENSE 13 /* Mechanical flip sensing */ +#define U300_GPIO_PIN_GPIO14 14 /* DSP JTAG Port RTCK */ +#define U300_GPIO_PIN_GPIO15 15 /* Unrouted */ + +#define U300_GPIO_PIN_GPIO16 16 /* Unrouted */ +#define U300_GPIO_PIN_GPIO17 17 /* Unrouted */ +#define U300_GPIO_PIN_GPIO18 18 /* Unrouted */ +#define U300_GPIO_PIN_GPIO19 19 /* Unrouted */ +#define U300_GPIO_PIN_GPIO20 20 /* Unrouted */ +#define U300_GPIO_PIN_GPIO21 21 /* Unrouted */ +#define U300_GPIO_PIN_GPIO22 22 /* Unrouted */ +#define U300_GPIO_PIN_GPIO23 23 /* Unrouted */ +#endif + +/* + * Individual pin assignments for the B330/S330 and B365/S365. + * Notice that the actual usage of these pins depends on the + * PAD MUX settings, that is why the same number can potentially + * appear several times. In the reference design each pin is only + * used for one purpose. These were determined by inspecting the + * S365 schematic. + */ +#if defined(CONFIG_MACH_U300_BS330) || defined(CONFIG_MACH_U300_BS365) || \ + defined(CONFIG_MACH_U300_BS335) +#define U300_GPIO_PIN_UART_RX 0 +#define U300_GPIO_PIN_UART_TX 1 +#define U300_GPIO_PIN_UART_CTS 2 +#define U300_GPIO_PIN_UART_RTS 3 +#define U300_GPIO_PIN_CAM_MAIN_STANDBY 4 /* Camera MAIN standby */ +#define U300_GPIO_PIN_GPIO05 5 /* Unrouted */ +#define U300_GPIO_PIN_MS_CD 6 /* Memory Stick Card insertion */ +#define U300_GPIO_PIN_GPIO07 7 /* Test point TP2430 */ + +#define U300_GPIO_PIN_GPIO08 8 /* Test point TP2437 */ +#define U300_GPIO_PIN_GPIO09 9 /* Test point TP2431 */ +#define U300_GPIO_PIN_GPIO10 10 /* Test point TP2432 */ +#define U300_GPIO_PIN_MMC_CLKRET 11 /* Clock return from MMC/SD card */ +#define U300_GPIO_PIN_MMC_CD 12 /* MMC Card insertion detection */ +#define U300_GPIO_PIN_CAM_SUB_STANDBY 13 /* Camera SUB standby */ +#define U300_GPIO_PIN_GPIO14 14 /* Test point TP2436 */ +#define U300_GPIO_PIN_GPIO15 15 /* Unrouted */ + +#define U300_GPIO_PIN_GPIO16 16 /* Test point TP2438 */ +#define U300_GPIO_PIN_PHFSENSE 17 /* Headphone jack sensing */ +#define U300_GPIO_PIN_GPIO18 18 /* Test point TP2439 */ +#define U300_GPIO_PIN_GPIO19 19 /* Routed somewhere */ +#define U300_GPIO_PIN_GPIO20 20 /* Unrouted */ +#define U300_GPIO_PIN_GPIO21 21 /* Unrouted */ +#define U300_GPIO_PIN_GPIO22 22 /* Unrouted */ +#define U300_GPIO_PIN_GPIO23 23 /* Unrouted */ + +#define U300_GPIO_PIN_GPIO24 24 /* Unrouted */ +#define U300_GPIO_PIN_GPIO25 25 /* Unrouted */ +#define U300_GPIO_PIN_GPIO26 26 /* Unrouted */ +#define U300_GPIO_PIN_GPIO27 27 /* Unrouted */ +#define U300_GPIO_PIN_GPIO28 28 /* Unrouted */ +#define U300_GPIO_PIN_GPIO29 29 /* Unrouted */ +#define U300_GPIO_PIN_GPIO30 30 /* Unrouted */ +#define U300_GPIO_PIN_GPIO31 31 /* Unrouted */ + +#define U300_GPIO_PIN_GPIO32 32 /* Unrouted */ +#define U300_GPIO_PIN_GPIO33 33 /* Unrouted */ +#define U300_GPIO_PIN_GPIO34 34 /* Unrouted */ +#define U300_GPIO_PIN_GPIO35 35 /* Unrouted */ +#define U300_GPIO_PIN_GPIO36 36 /* Unrouted */ +#define U300_GPIO_PIN_GPIO37 37 /* Unrouted */ +#define U300_GPIO_PIN_GPIO38 38 /* Unrouted */ +#define U300_GPIO_PIN_GPIO39 39 /* Unrouted */ + +#ifdef CONFIG_MACH_U300_BS335 + +#define U300_GPIO_PIN_GPIO40 40 /* Unrouted */ +#define U300_GPIO_PIN_GPIO41 41 /* Unrouted */ +#define U300_GPIO_PIN_GPIO42 42 /* Unrouted */ +#define U300_GPIO_PIN_GPIO43 43 /* Unrouted */ +#define U300_GPIO_PIN_GPIO44 44 /* Unrouted */ +#define U300_GPIO_PIN_GPIO45 45 /* Unrouted */ +#define U300_GPIO_PIN_GPIO46 46 /* Unrouted */ +#define U300_GPIO_PIN_GPIO47 47 /* Unrouted */ + +#define U300_GPIO_PIN_GPIO48 48 /* Unrouted */ +#define U300_GPIO_PIN_GPIO49 49 /* Unrouted */ +#define U300_GPIO_PIN_GPIO50 50 /* Unrouted */ +#define U300_GPIO_PIN_GPIO51 51 /* Unrouted */ +#define U300_GPIO_PIN_GPIO52 52 /* Unrouted */ +#define U300_GPIO_PIN_GPIO53 53 /* Unrouted */ +#define U300_GPIO_PIN_GPIO54 54 /* Unrouted */ +#define U300_GPIO_PIN_GPIO55 55 /* Unrouted */ +#endif + +#endif + +/* translates a pin number to a port number */ +#define PIN_TO_PORT(val) (val >> 3) + +/* These can be found in arch/arm/mach-u300/gpio.c */ +extern int gpio_request(unsigned gpio, const char *label); +extern void gpio_free(unsigned gpio); +extern int gpio_direction_input(unsigned gpio); +extern int gpio_direction_output(unsigned gpio, int value); +extern int gpio_register_callback(unsigned gpio, + int (*func)(void *arg), + void *); +extern int gpio_unregister_callback(unsigned gpio); +extern void enable_irq_on_gpio_pin(unsigned gpio, int edge); +extern void disable_irq_on_gpio_pin(unsigned gpio); +extern void gpio_pullup(unsigned gpio, int value); +extern int gpio_get_value(unsigned gpio); +extern void gpio_set_value(unsigned gpio, int value); + +/* wrappers to sleep-enable the previous two functions */ +static inline unsigned gpio_to_irq(unsigned gpio) +{ + return PIN_TO_PORT(gpio) + IRQ_U300_GPIO_PORT0; +} + +static inline unsigned irq_to_gpio(unsigned irq) +{ + /* + * FIXME: This is no 1-1 mapping at all, it points to the + * whole block of 8 pins. + */ + return (irq - IRQ_U300_GPIO_PORT0) << 3; +} + +#endif diff --git a/arch/arm/mach-u300/include/mach/hardware.h b/arch/arm/mach-u300/include/mach/hardware.h new file mode 100644 index 000000000000..b99d4ce0ac2b --- /dev/null +++ b/arch/arm/mach-u300/include/mach/hardware.h @@ -0,0 +1,5 @@ +/* + * arch/arm/mach-u300/include/mach/hardware.h + */ +#include <asm/sizes.h> +#include <mach/u300-regs.h> diff --git a/arch/arm/mach-u300/include/mach/io.h b/arch/arm/mach-u300/include/mach/io.h new file mode 100644 index 000000000000..5d6b4c13b3a0 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/io.h @@ -0,0 +1,20 @@ +/* + * + * arch/arm/mach-u300/include/mach/io.h + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Dummy IO map for being able to use writew()/readw(), + * writel()/readw() and similar accessor functions. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#ifndef __MACH_IO_H +#define __MACH_IO_H + +#define IO_SPACE_LIMIT 0xffffffff + +#define __io(a) __typesafe_io(a) +#define __mem_pci(a) (a) + +#endif diff --git a/arch/arm/mach-u300/include/mach/irqs.h b/arch/arm/mach-u300/include/mach/irqs.h new file mode 100644 index 000000000000..a6867b12773e --- /dev/null +++ b/arch/arm/mach-u300/include/mach/irqs.h @@ -0,0 +1,114 @@ +/* + * + * arch/arm/mach-u300/include/mach/irqs.h + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * IRQ channel definitions for the U300 platforms. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ + +#ifndef __MACH_IRQS_H +#define __MACH_IRQS_H + +#define IRQ_U300_INTCON0_START 0 +#define IRQ_U300_INTCON1_START 32 +/* These are on INTCON0 - 30 lines */ +#define IRQ_U300_IRQ0_EXT 0 +#define IRQ_U300_IRQ1_EXT 1 +#define IRQ_U300_DMA 2 +#define IRQ_U300_VIDEO_ENC_0 3 +#define IRQ_U300_VIDEO_ENC_1 4 +#define IRQ_U300_AAIF_RX 5 +#define IRQ_U300_AAIF_TX 6 +#define IRQ_U300_AAIF_VGPIO 7 +#define IRQ_U300_AAIF_WAKEUP 8 +#define IRQ_U300_PCM_I2S0_FRAME 9 +#define IRQ_U300_PCM_I2S0_FIFO 10 +#define IRQ_U300_PCM_I2S1_FRAME 11 +#define IRQ_U300_PCM_I2S1_FIFO 12 +#define IRQ_U300_XGAM_GAMCON 13 +#define IRQ_U300_XGAM_CDI 14 +#define IRQ_U300_XGAM_CDICON 15 +#if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) +/* MMIACC not used on the DB3210 or DB3350 chips */ +#define IRQ_U300_XGAM_MMIACC 16 +#endif +#define IRQ_U300_XGAM_PDI 17 +#define IRQ_U300_XGAM_PDICON 18 +#define IRQ_U300_XGAM_GAMEACC 19 +#define IRQ_U300_XGAM_MCIDCT 20 +#define IRQ_U300_APEX 21 +#define IRQ_U300_UART0 22 +#define IRQ_U300_SPI 23 +#define IRQ_U300_TIMER_APP_OS 24 +#define IRQ_U300_TIMER_APP_DD 25 +#define IRQ_U300_TIMER_APP_GP1 26 +#define IRQ_U300_TIMER_APP_GP2 27 +#define IRQ_U300_TIMER_OS 28 +#define IRQ_U300_TIMER_MS 29 +#define IRQ_U300_KEYPAD_KEYBF 30 +#define IRQ_U300_KEYPAD_KEYBR 31 +/* These are on INTCON1 - 32 lines */ +#define IRQ_U300_GPIO_PORT0 32 +#define IRQ_U300_GPIO_PORT1 33 +#define IRQ_U300_GPIO_PORT2 34 + +#if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) || \ + defined(CONFIG_MACH_U300_BS335) +/* These are for DB3150, DB3200 and DB3350 */ +#define IRQ_U300_WDOG 35 +#define IRQ_U300_EVHIST 36 +#define IRQ_U300_MSPRO 37 +#define IRQ_U300_MMCSD_MCIINTR0 38 +#define IRQ_U300_MMCSD_MCIINTR1 39 +#define IRQ_U300_I2C0 40 +#define IRQ_U300_I2C1 41 +#define IRQ_U300_RTC 42 +#define IRQ_U300_NFIF 43 +#define IRQ_U300_NFIF2 44 +#endif + +/* DB3150 and DB3200 have only 45 IRQs */ +#if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) +#define U300_NR_IRQS 45 +#endif + +/* The DB3350-specific interrupt lines */ +#ifdef CONFIG_MACH_U300_BS335 +#define IRQ_U300_ISP_F0 45 +#define IRQ_U300_ISP_F1 46 +#define IRQ_U300_ISP_F2 47 +#define IRQ_U300_ISP_F3 48 +#define IRQ_U300_ISP_F4 49 +#define IRQ_U300_GPIO_PORT3 50 +#define IRQ_U300_SYSCON_PLL_LOCK 51 +#define IRQ_U300_UART1 52 +#define IRQ_U300_GPIO_PORT4 53 +#define IRQ_U300_GPIO_PORT5 54 +#define IRQ_U300_GPIO_PORT6 55 +#define U300_NR_IRQS 56 +#endif + +/* The DB3210-specific interrupt lines */ +#ifdef CONFIG_MACH_U300_BS365 +#define IRQ_U300_GPIO_PORT3 35 +#define IRQ_U300_GPIO_PORT4 36 +#define IRQ_U300_WDOG 37 +#define IRQ_U300_EVHIST 38 +#define IRQ_U300_MSPRO 39 +#define IRQ_U300_MMCSD_MCIINTR0 40 +#define IRQ_U300_MMCSD_MCIINTR1 41 +#define IRQ_U300_I2C0 42 +#define IRQ_U300_I2C1 43 +#define IRQ_U300_RTC 44 +#define IRQ_U300_NFIF 45 +#define IRQ_U300_NFIF2 46 +#define IRQ_U300_SYSCON_PLL_LOCK 47 +#define U300_NR_IRQS 48 +#endif + +#define NR_IRQS U300_NR_IRQS + +#endif diff --git a/arch/arm/mach-u300/include/mach/memory.h b/arch/arm/mach-u300/include/mach/memory.h new file mode 100644 index 000000000000..bf134bcc129d --- /dev/null +++ b/arch/arm/mach-u300/include/mach/memory.h @@ -0,0 +1,42 @@ +/* + * + * arch/arm/mach-u300/include/mach/memory.h + * + * + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Memory virtual/physical mapping constants. + * Author: Linus Walleij <linus.walleij@stericsson.com> + * Author: Jonas Aaberg <jonas.aberg@stericsson.com> + */ + +#ifndef __MACH_MEMORY_H +#define __MACH_MEMORY_H + +#ifdef CONFIG_MACH_U300_DUAL_RAM + +#define PHYS_OFFSET UL(0x48000000) +#define BOOT_PARAMS_OFFSET (PHYS_OFFSET + 0x100) + +#else + +#ifdef CONFIG_MACH_U300_2MB_ALIGNMENT_FIX +#define PHYS_OFFSET (0x28000000 + \ + (CONFIG_MACH_U300_ACCESS_MEM_SIZE - \ + (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024) +#else +#define PHYS_OFFSET (0x28000000 + \ + (CONFIG_MACH_U300_ACCESS_MEM_SIZE + \ + (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024) +#endif +#define BOOT_PARAMS_OFFSET (0x28000000 + \ + (CONFIG_MACH_U300_ACCESS_MEM_SIZE + \ + (CONFIG_MACH_U300_ACCESS_MEM_SIZE & 1))*1024*1024 + 0x100) +#endif + +/* + * We enable a real big DMA buffer if need be. + */ +#define CONSISTENT_DMA_SIZE SZ_4M + +#endif diff --git a/arch/arm/mach-u300/include/mach/platform.h b/arch/arm/mach-u300/include/mach/platform.h new file mode 100644 index 000000000000..77d9210a82e2 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/platform.h @@ -0,0 +1,19 @@ +/* + * + * arch/arm/mach-u300/include/mach/platform.h + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Basic platform init and mapping functions. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ + +#ifndef __ASSEMBLY__ + +void u300_map_io(void); +void u300_init_irq(void); +void u300_init_devices(void); +extern struct sys_timer u300_timer; + +#endif diff --git a/arch/arm/mach-u300/include/mach/syscon.h b/arch/arm/mach-u300/include/mach/syscon.h new file mode 100644 index 000000000000..1c90d1b1ccb6 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/syscon.h @@ -0,0 +1,644 @@ +/* + * + * arch/arm/mach-u300/include/mach/syscon.h + * + * + * Copyright (C) 2008 ST-Ericsson AB + * + * Author: Rickard Andersson <rickard.andersson@stericsson.com> + */ + +#ifndef __MACH_SYSCON_H +#define __MACH_SYSCON_H + +/* + * All register defines for SYSCON registers that concerns individual + * block clocks and reset lines are registered here. This is because + * we don't want any other file to try to fool around with this stuff. + */ + +/* APP side SYSCON registers */ +/* TODO: this is incomplete. Add all from asic_syscon_map.h eventually. */ +/* CLK Control Register 16bit (R/W) */ +#define U300_SYSCON_CCR (0x0000) +#define U300_SYSCON_CCR_I2S1_USE_VCXO (0x0040) +#define U300_SYSCON_CCR_I2S0_USE_VCXO (0x0020) +#define U300_SYSCON_CCR_TURN_VCXO_ON (0x0008) +#define U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK (0x0007) +#define U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER (0x04) +#define U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW (0x03) +#define U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE (0x02) +#define U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH (0x01) +#define U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST (0x00) +/* CLK Status Register 16bit (R/W) */ +#define U300_SYSCON_CSR (0x0004) +#define U300_SYSCON_CSR_PLL208_LOCK_IND (0x0002) +#define U300_SYSCON_CSR_PLL13_LOCK_IND (0x0001) +/* Reset lines for SLOW devices 16bit (R/W) */ +#define U300_SYSCON_RSR (0x0014) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_RSR_PPM_RESET_EN (0x0200) +#endif +#define U300_SYSCON_RSR_ACC_TMR_RESET_EN (0x0100) +#define U300_SYSCON_RSR_APP_TMR_RESET_EN (0x0080) +#define U300_SYSCON_RSR_RTC_RESET_EN (0x0040) +#define U300_SYSCON_RSR_KEYPAD_RESET_EN (0x0020) +#define U300_SYSCON_RSR_GPIO_RESET_EN (0x0010) +#define U300_SYSCON_RSR_EH_RESET_EN (0x0008) +#define U300_SYSCON_RSR_BTR_RESET_EN (0x0004) +#define U300_SYSCON_RSR_UART_RESET_EN (0x0002) +#define U300_SYSCON_RSR_SLOW_BRIDGE_RESET_EN (0x0001) +/* Reset lines for FAST devices 16bit (R/W) */ +#define U300_SYSCON_RFR (0x0018) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_RFR_UART1_RESET_ENABLE (0x0080) +#endif +#define U300_SYSCON_RFR_SPI_RESET_ENABLE (0x0040) +#define U300_SYSCON_RFR_MMC_RESET_ENABLE (0x0020) +#define U300_SYSCON_RFR_PCM_I2S1_RESET_ENABLE (0x0010) +#define U300_SYSCON_RFR_PCM_I2S0_RESET_ENABLE (0x0008) +#define U300_SYSCON_RFR_I2C1_RESET_ENABLE (0x0004) +#define U300_SYSCON_RFR_I2C0_RESET_ENABLE (0x0002) +#define U300_SYSCON_RFR_FAST_BRIDGE_RESET_ENABLE (0x0001) +/* Reset lines for the rest of the peripherals 16bit (R/W) */ +#define U300_SYSCON_RRR (0x001c) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_RRR_CDS_RESET_EN (0x4000) +#define U300_SYSCON_RRR_ISP_RESET_EN (0x2000) +#endif +#define U300_SYSCON_RRR_INTCON_RESET_EN (0x1000) +#define U300_SYSCON_RRR_MSPRO_RESET_EN (0x0800) +#define U300_SYSCON_RRR_XGAM_RESET_EN (0x0100) +#define U300_SYSCON_RRR_XGAM_VC_SYNC_RESET_EN (0x0080) +#define U300_SYSCON_RRR_NANDIF_RESET_EN (0x0040) +#define U300_SYSCON_RRR_EMIF_RESET_EN (0x0020) +#define U300_SYSCON_RRR_DMAC_RESET_EN (0x0010) +#define U300_SYSCON_RRR_CPU_RESET_EN (0x0008) +#define U300_SYSCON_RRR_APEX_RESET_EN (0x0004) +#define U300_SYSCON_RRR_AHB_RESET_EN (0x0002) +#define U300_SYSCON_RRR_AAIF_RESET_EN (0x0001) +/* Clock enable for SLOW peripherals 16bit (R/W) */ +#define U300_SYSCON_CESR (0x0020) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_CESR_PPM_CLK_EN (0x0200) +#endif +#define U300_SYSCON_CESR_ACC_TMR_CLK_EN (0x0100) +#define U300_SYSCON_CESR_APP_TMR_CLK_EN (0x0080) +#define U300_SYSCON_CESR_KEYPAD_CLK_EN (0x0040) +#define U300_SYSCON_CESR_GPIO_CLK_EN (0x0010) +#define U300_SYSCON_CESR_EH_CLK_EN (0x0008) +#define U300_SYSCON_CESR_BTR_CLK_EN (0x0004) +#define U300_SYSCON_CESR_UART_CLK_EN (0x0002) +#define U300_SYSCON_CESR_SLOW_BRIDGE_CLK_EN (0x0001) +/* Clock enable for FAST peripherals 16bit (R/W) */ +#define U300_SYSCON_CEFR (0x0024) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_CEFR_UART1_CLK_EN (0x0200) +#endif +#define U300_SYSCON_CEFR_I2S1_CORE_CLK_EN (0x0100) +#define U300_SYSCON_CEFR_I2S0_CORE_CLK_EN (0x0080) +#define U300_SYSCON_CEFR_SPI_CLK_EN (0x0040) +#define U300_SYSCON_CEFR_MMC_CLK_EN (0x0020) +#define U300_SYSCON_CEFR_I2S1_CLK_EN (0x0010) +#define U300_SYSCON_CEFR_I2S0_CLK_EN (0x0008) +#define U300_SYSCON_CEFR_I2C1_CLK_EN (0x0004) +#define U300_SYSCON_CEFR_I2C0_CLK_EN (0x0002) +#define U300_SYSCON_CEFR_FAST_BRIDGE_CLK_EN (0x0001) +/* Clock enable for the rest of the peripherals 16bit (R/W) */ +#define U300_SYSCON_CERR (0x0028) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_CERR_CDS_CLK_EN (0x2000) +#define U300_SYSCON_CERR_ISP_CLK_EN (0x1000) +#endif +#define U300_SYSCON_CERR_MSPRO_CLK_EN (0x0800) +#define U300_SYSCON_CERR_AHB_SUBSYS_BRIDGE_CLK_EN (0x0400) +#define U300_SYSCON_CERR_SEMI_CLK_EN (0x0200) +#define U300_SYSCON_CERR_XGAM_CLK_EN (0x0100) +#define U300_SYSCON_CERR_VIDEO_ENC_CLK_EN (0x0080) +#define U300_SYSCON_CERR_NANDIF_CLK_EN (0x0040) +#define U300_SYSCON_CERR_EMIF_CLK_EN (0x0020) +#define U300_SYSCON_CERR_DMAC_CLK_EN (0x0010) +#define U300_SYSCON_CERR_CPU_CLK_EN (0x0008) +#define U300_SYSCON_CERR_APEX_CLK_EN (0x0004) +#define U300_SYSCON_CERR_AHB_CLK_EN (0x0002) +#define U300_SYSCON_CERR_AAIF_CLK_EN (0x0001) +/* Single block clock enable 16bit (-/W) */ +#define U300_SYSCON_SBCER (0x002c) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_SBCER_PPM_CLK_EN (0x0009) +#endif +#define U300_SYSCON_SBCER_ACC_TMR_CLK_EN (0x0008) +#define U300_SYSCON_SBCER_APP_TMR_CLK_EN (0x0007) +#define U300_SYSCON_SBCER_KEYPAD_CLK_EN (0x0006) +#define U300_SYSCON_SBCER_GPIO_CLK_EN (0x0004) +#define U300_SYSCON_SBCER_EH_CLK_EN (0x0003) +#define U300_SYSCON_SBCER_BTR_CLK_EN (0x0002) +#define U300_SYSCON_SBCER_UART_CLK_EN (0x0001) +#define U300_SYSCON_SBCER_SLOW_BRIDGE_CLK_EN (0x0000) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_SBCER_UART1_CLK_EN (0x0019) +#endif +#define U300_SYSCON_SBCER_I2S1_CORE_CLK_EN (0x0018) +#define U300_SYSCON_SBCER_I2S0_CORE_CLK_EN (0x0017) +#define U300_SYSCON_SBCER_SPI_CLK_EN (0x0016) +#define U300_SYSCON_SBCER_MMC_CLK_EN (0x0015) +#define U300_SYSCON_SBCER_I2S1_CLK_EN (0x0014) +#define U300_SYSCON_SBCER_I2S0_CLK_EN (0x0013) +#define U300_SYSCON_SBCER_I2C1_CLK_EN (0x0012) +#define U300_SYSCON_SBCER_I2C0_CLK_EN (0x0011) +#define U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN (0x0010) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_SBCER_CDS_CLK_EN (0x002D) +#define U300_SYSCON_SBCER_ISP_CLK_EN (0x002C) +#endif +#define U300_SYSCON_SBCER_MSPRO_CLK_EN (0x002B) +#define U300_SYSCON_SBCER_AHB_SUBSYS_BRIDGE_CLK_EN (0x002A) +#define U300_SYSCON_SBCER_SEMI_CLK_EN (0x0029) +#define U300_SYSCON_SBCER_XGAM_CLK_EN (0x0028) +#define U300_SYSCON_SBCER_VIDEO_ENC_CLK_EN (0x0027) +#define U300_SYSCON_SBCER_NANDIF_CLK_EN (0x0026) +#define U300_SYSCON_SBCER_EMIF_CLK_EN (0x0025) +#define U300_SYSCON_SBCER_DMAC_CLK_EN (0x0024) +#define U300_SYSCON_SBCER_CPU_CLK_EN (0x0023) +#define U300_SYSCON_SBCER_APEX_CLK_EN (0x0022) +#define U300_SYSCON_SBCER_AHB_CLK_EN (0x0021) +#define U300_SYSCON_SBCER_AAIF_CLK_EN (0x0020) +/* Single block clock disable 16bit (-/W) */ +#define U300_SYSCON_SBCDR (0x0030) +/* Same values as above for SBCER */ +/* Clock force SLOW peripherals 16bit (R/W) */ +#define U300_SYSCON_CFSR (0x003c) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_CFSR_PPM_CLK_FORCE_EN (0x0200) +#endif +#define U300_SYSCON_CFSR_ACC_TMR_CLK_FORCE_EN (0x0100) +#define U300_SYSCON_CFSR_APP_TMR_CLK_FORCE_EN (0x0080) +#define U300_SYSCON_CFSR_KEYPAD_CLK_FORCE_EN (0x0020) +#define U300_SYSCON_CFSR_GPIO_CLK_FORCE_EN (0x0010) +#define U300_SYSCON_CFSR_EH_CLK_FORCE_EN (0x0008) +#define U300_SYSCON_CFSR_BTR_CLK_FORCE_EN (0x0004) +#define U300_SYSCON_CFSR_UART_CLK_FORCE_EN (0x0002) +#define U300_SYSCON_CFSR_SLOW_BRIDGE_CLK_FORCE_EN (0x0001) +/* Clock force FAST peripherals 16bit (R/W) */ +#define U300_SYSCON_CFFR (0x40) +/* Values not defined. Define if you want to use them. */ +/* Clock force the rest of the peripherals 16bit (R/W) */ +#define U300_SYSCON_CFRR (0x44) +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SYSCON_CFRR_CDS_CLK_FORCE_EN (0x2000) +#define U300_SYSCON_CFRR_ISP_CLK_FORCE_EN (0x1000) +#endif +#define U300_SYSCON_CFRR_MSPRO_CLK_FORCE_EN (0x0800) +#define U300_SYSCON_CFRR_AHB_SUBSYS_BRIDGE_CLK_FORCE_EN (0x0400) +#define U300_SYSCON_CFRR_SEMI_CLK_FORCE_EN (0x0200) +#define U300_SYSCON_CFRR_XGAM_CLK_FORCE_EN (0x0100) +#define U300_SYSCON_CFRR_VIDEO_ENC_CLK_FORCE_EN (0x0080) +#define U300_SYSCON_CFRR_NANDIF_CLK_FORCE_EN (0x0040) +#define U300_SYSCON_CFRR_EMIF_CLK_FORCE_EN (0x0020) +#define U300_SYSCON_CFRR_DMAC_CLK_FORCE_EN (0x0010) +#define U300_SYSCON_CFRR_CPU_CLK_FORCE_EN (0x0008) +#define U300_SYSCON_CFRR_APEX_CLK_FORCE_EN (0x0004) +#define U300_SYSCON_CFRR_AHB_CLK_FORCE_EN (0x0002) +#define U300_SYSCON_CFRR_AAIF_CLK_FORCE_EN (0x0001) +/* PLL208 Frequency Control 16bit (R/W) */ +#define U300_SYSCON_PFCR (0x48) +#define U300_SYSCON_PFCR_DPLL_MULT_NUM (0x000F) +/* Power Management Control 16bit (R/W) */ +#define U300_SYSCON_PMCR (0x50) +#define U300_SYSCON_PMCR_DCON_ENABLE (0x0002) +#define U300_SYSCON_PMCR_PWR_MGNT_ENABLE (0x0001) +/* + * All other clocking registers moved to clock.c! + */ +/* Reset Out 16bit (R/W) */ +#define U300_SYSCON_RCR (0x6c) +#define U300_SYSCON_RCR_RESOUT0_RST_N_DISABLE (0x0001) +/* EMIF Slew Rate Control 16bit (R/W) */ +#define U300_SYSCON_SRCLR (0x70) +#define U300_SYSCON_SRCLR_MASK (0x03FF) +#define U300_SYSCON_SRCLR_VALUE (0x03FF) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_5_B (0x0200) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_5_A (0x0100) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_4_B (0x0080) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_4_A (0x0040) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_3_B (0x0020) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_3_A (0x0010) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_2_B (0x0008) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_2_A (0x0004) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_1_B (0x0002) +#define U300_SYSCON_SRCLR_EMIF_1_SLRC_1_A (0x0001) +/* EMIF Clock Control Register 16bit (R/W) */ +#define U300_SYSCON_ECCR (0x0078) +#define U300_SYSCON_ECCR_MASK (0x000F) +#define U300_SYSCON_ECCR_EMIF_1_STATIC_CLK_EN_N_DISABLE (0x0008) +#define U300_SYSCON_ECCR_EMIF_1_RET_OUT_CLK_EN_N_DISABLE (0x0004) +#define U300_SYSCON_ECCR_EMIF_MEMCLK_RET_EN_N_DISABLE (0x0002) +#define U300_SYSCON_ECCR_EMIF_SDRCLK_RET_EN_N_DISABLE (0x0001) +/* PAD MUX Control register 1 (LOW) 16bit (R/W) */ +#define U300_SYSCON_PMC1LR (0x007C) +#define U300_SYSCON_PMC1LR_MASK (0xFFFF) +#define U300_SYSCON_PMC1LR_CDI_MASK (0xC000) +#define U300_SYSCON_PMC1LR_CDI_CDI (0x0000) +#define U300_SYSCON_PMC1LR_CDI_EMIF (0x4000) +#define U300_SYSCON_PMC1LR_CDI_GPIO (0x8000) +#define U300_SYSCON_PMC1LR_CDI_WCDMA (0xC000) +#define U300_SYSCON_PMC1LR_PDI_MASK (0x3000) +#define U300_SYSCON_PMC1LR_PDI_PDI (0x0000) +#define U300_SYSCON_PMC1LR_PDI_EGG (0x1000) +#define U300_SYSCON_PMC1LR_PDI_WCDMA (0x3000) +#define U300_SYSCON_PMC1LR_MMCSD_MASK (0x0C00) +#define U300_SYSCON_PMC1LR_MMCSD_MMCSD (0x0000) +#define U300_SYSCON_PMC1LR_MMCSD_MSPRO (0x0400) +#define U300_SYSCON_PMC1LR_MMCSD_DSP (0x0800) +#define U300_SYSCON_PMC1LR_MMCSD_WCDMA (0x0C00) +#define U300_SYSCON_PMC1LR_ETM_MASK (0x0300) +#define U300_SYSCON_PMC1LR_ETM_ACC (0x0000) +#define U300_SYSCON_PMC1LR_ETM_APP (0x0100) +#define U300_SYSCON_PMC1LR_EMIF_1_CS2_MASK (0x00C0) +#define U300_SYSCON_PMC1LR_EMIF_1_CS2_STATIC (0x0000) +#define U300_SYSCON_PMC1LR_EMIF_1_CS2_NFIF (0x0040) +#define U300_SYSCON_PMC1LR_EMIF_1_CS2_SDRAM (0x0080) +#define U300_SYSCON_PMC1LR_EMIF_1_CS2_STATIC_2GB (0x00C0) +#define U300_SYSCON_PMC1LR_EMIF_1_CS1_MASK (0x0030) +#define U300_SYSCON_PMC1LR_EMIF_1_CS1_STATIC (0x0000) +#define U300_SYSCON_PMC1LR_EMIF_1_CS1_NFIF (0x0010) +#define U300_SYSCON_PMC1LR_EMIF_1_CS1_SDRAM (0x0020) +#define U300_SYSCON_PMC1LR_EMIF_1_CS1_SEMI (0x0030) +#define U300_SYSCON_PMC1LR_EMIF_1_CS0_MASK (0x000C) +#define U300_SYSCON_PMC1LR_EMIF_1_CS0_STATIC (0x0000) +#define U300_SYSCON_PMC1LR_EMIF_1_CS0_NFIF (0x0004) +#define U300_SYSCON_PMC1LR_EMIF_1_CS0_SDRAM (0x0008) +#define U300_SYSCON_PMC1LR_EMIF_1_CS0_SEMI (0x000C) +#define U300_SYSCON_PMC1LR_EMIF_1_MASK (0x0003) +#define U300_SYSCON_PMC1LR_EMIF_1_STATIC (0x0000) +#define U300_SYSCON_PMC1LR_EMIF_1_SDRAM0 (0x0001) +#define U300_SYSCON_PMC1LR_EMIF_1_SDRAM1 (0x0002) +#define U300_SYSCON_PMC1LR_EMIF_1 (0x0003) +/* PAD MUX Control register 2 (HIGH) 16bit (R/W) */ +#define U300_SYSCON_PMC1HR (0x007E) +#define U300_SYSCON_PMC1HR_MASK (0xFFFF) +#define U300_SYSCON_PMC1HR_MISC_2_MASK (0xC000) +#define U300_SYSCON_PMC1HR_MISC_2_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_MISC_2_MSPRO (0x4000) +#define U300_SYSCON_PMC1HR_MISC_2_DSP (0x8000) +#define U300_SYSCON_PMC1HR_MISC_2_AAIF (0xC000) +#define U300_SYSCON_PMC1HR_APP_GPIO_2_MASK (0x3000) +#define U300_SYSCON_PMC1HR_APP_GPIO_2_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_APP_GPIO_2_NFIF (0x1000) +#define U300_SYSCON_PMC1HR_APP_GPIO_2_DSP (0x2000) +#define U300_SYSCON_PMC1HR_APP_GPIO_2_AAIF (0x3000) +#define U300_SYSCON_PMC1HR_APP_GPIO_1_MASK (0x0C00) +#define U300_SYSCON_PMC1HR_APP_GPIO_1_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_APP_GPIO_1_MMC (0x0400) +#define U300_SYSCON_PMC1HR_APP_GPIO_1_DSP (0x0800) +#define U300_SYSCON_PMC1HR_APP_GPIO_1_AAIF (0x0C00) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_MASK (0x0300) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_SPI (0x0100) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_2_AAIF (0x0300) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_MASK (0x00C0) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_SPI (0x0040) +#define U300_SYSCON_PMC1HR_APP_SPI_CS_1_AAIF (0x00C0) +#define U300_SYSCON_PMC1HR_APP_SPI_2_MASK (0x0030) +#define U300_SYSCON_PMC1HR_APP_SPI_2_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_APP_SPI_2_SPI (0x0010) +#define U300_SYSCON_PMC1HR_APP_SPI_2_DSP (0x0020) +#define U300_SYSCON_PMC1HR_APP_SPI_2_AAIF (0x0030) +#define U300_SYSCON_PMC1HR_APP_UART0_2_MASK (0x000C) +#define U300_SYSCON_PMC1HR_APP_UART0_2_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_APP_UART0_2_UART0 (0x0004) +#define U300_SYSCON_PMC1HR_APP_UART0_2_NFIF_CS (0x0008) +#define U300_SYSCON_PMC1HR_APP_UART0_2_AAIF (0x000C) +#define U300_SYSCON_PMC1HR_APP_UART0_1_MASK (0x0003) +#define U300_SYSCON_PMC1HR_APP_UART0_1_APP_GPIO (0x0000) +#define U300_SYSCON_PMC1HR_APP_UART0_1_UART0 (0x0001) +#define U300_SYSCON_PMC1HR_APP_UART0_1_AAIF (0x0003) +/* Step one for killing the applications system 16bit (-/W) */ +#define U300_SYSCON_KA1R (0x0080) +#define U300_SYSCON_KA1R_MASK (0xFFFF) +#define U300_SYSCON_KA1R_VALUE (0xFFFF) +/* Step two for killing the application system 16bit (-/W) */ +#define U300_SYSCON_KA2R (0x0084) +#define U300_SYSCON_KA2R_MASK (0xFFFF) +#define U300_SYSCON_KA2R_VALUE (0xFFFF) +/* MMC/MSPRO frequency divider register 0 16bit (R/W) */ +#define U300_SYSCON_MMF0R (0x90) +#define U300_SYSCON_MMF0R_MASK (0x00FF) +#define U300_SYSCON_MMF0R_FREQ_0_HIGH_MASK (0x00F0) +#define U300_SYSCON_MMF0R_FREQ_0_LOW_MASK (0x000F) +/* MMC/MSPRO frequency divider register 1 16bit (R/W) */ +#define U300_SYSCON_MMF1R (0x94) +#define U300_SYSCON_MMF1R_MASK (0x00FF) +#define U300_SYSCON_MMF1R_FREQ_1_HIGH_MASK (0x00F0) +#define U300_SYSCON_MMF1R_FREQ_1_LOW_MASK (0x000F) +/* AAIF control register 16 bit (R/W) */ +#define U300_SYSCON_AAIFCR (0x98) +#define U300_SYSCON_AAIFCR_MASK (0x0003) +#define U300_SYSCON_AAIFCR_AASW_CTRL_MASK (0x0003) +#define U300_SYSCON_AAIFCR_AASW_CTRL_FUNCTIONAL (0x0000) +#define U300_SYSCON_AAIFCR_AASW_CTRL_MONITORING (0x0001) +#define U300_SYSCON_AAIFCR_AASW_CTRL_ACC_TO_EXT (0x0002) +#define U300_SYSCON_AAIFCR_AASW_CTRL_APP_TO_EXT (0x0003) +/* Clock control for the MMC and MSPRO blocks 16bit (R/W) */ +#define U300_SYSCON_MMCR (0x9C) +#define U300_SYSCON_MMCR_MASK (0x0003) +#define U300_SYSCON_MMCR_MMC_FB_CLK_SEL_ENABLE (0x0002) +#define U300_SYSCON_MMCR_MSPRO_FREQSEL_ENABLE (0x0001) + +/* TODO: More SYSCON registers missing */ +#define U300_SYSCON_PMC3R (0x10c) +#define U300_SYSCON_PMC3R_APP_MISC_11_MASK (0xc000) +#define U300_SYSCON_PMC3R_APP_MISC_11_SPI (0x4000) +#define U300_SYSCON_PMC3R_APP_MISC_10_MASK (0x3000) +#define U300_SYSCON_PMC3R_APP_MISC_10_SPI (0x1000) +/* TODO: Missing other configs, I just added the SPI stuff */ + +/* SYS_0_CLK_CONTROL first clock control 16bit (R/W) */ +#define U300_SYSCON_S0CCR (0x120) +#define U300_SYSCON_S0CCR_FIELD_MASK (0x43FF) +#define U300_SYSCON_S0CCR_CLOCK_REQ (0x4000) +#define U300_SYSCON_S0CCR_CLOCK_INV (0x0200) +#define U300_SYSCON_S0CCR_CLOCK_FREQ_MASK (0x01E0) +#define U300_SYSCON_S0CCR_CLOCK_SELECT_MASK (0x001E) +#define U300_SYSCON_S0CCR_CLOCK_ENABLE (0x0001) +#define U300_SYSCON_S0CCR_SEL_MCLK (0x8<<1) +#define U300_SYSCON_S0CCR_SEL_ACC_FSM_CLK (0xA<<1) +#define U300_SYSCON_S0CCR_SEL_PLL60_48_CLK (0xC<<1) +#define U300_SYSCON_S0CCR_SEL_PLL60_60_CLK (0xD<<1) +#define U300_SYSCON_S0CCR_SEL_ACC_PLL208_CLK (0xE<<1) +#define U300_SYSCON_S0CCR_SEL_APP_PLL13_CLK (0x0<<1) +#define U300_SYSCON_S0CCR_SEL_APP_FSM_CLK (0x2<<1) +#define U300_SYSCON_S0CCR_SEL_RTC_CLK (0x4<<1) +#define U300_SYSCON_S0CCR_SEL_APP_PLL208_CLK (0x6<<1) +/* SYS_1_CLK_CONTROL second clock control 16 bit (R/W) */ +#define U300_SYSCON_S1CCR (0x124) +#define U300_SYSCON_S1CCR_FIELD_MASK (0x43FF) +#define U300_SYSCON_S1CCR_CLOCK_REQ (0x4000) +#define U300_SYSCON_S1CCR_CLOCK_INV (0x0200) +#define U300_SYSCON_S1CCR_CLOCK_FREQ_MASK (0x01E0) +#define U300_SYSCON_S1CCR_CLOCK_SELECT_MASK (0x001E) +#define U300_SYSCON_S1CCR_CLOCK_ENABLE (0x0001) +#define U300_SYSCON_S1CCR_SEL_MCLK (0x8<<1) +#define U300_SYSCON_S1CCR_SEL_ACC_FSM_CLK (0xA<<1) +#define U300_SYSCON_S1CCR_SEL_PLL60_48_CLK (0xC<<1) +#define U300_SYSCON_S1CCR_SEL_PLL60_60_CLK (0xD<<1) +#define U300_SYSCON_S1CCR_SEL_ACC_PLL208_CLK (0xE<<1) +#define U300_SYSCON_S1CCR_SEL_ACC_PLL13_CLK (0x0<<1) +#define U300_SYSCON_S1CCR_SEL_APP_FSM_CLK (0x2<<1) +#define U300_SYSCON_S1CCR_SEL_RTC_CLK (0x4<<1) +#define U300_SYSCON_S1CCR_SEL_APP_PLL208_CLK (0x6<<1) +/* SYS_2_CLK_CONTROL third clock contol 16 bit (R/W) */ +#define U300_SYSCON_S2CCR (0x128) +#define U300_SYSCON_S2CCR_FIELD_MASK (0xC3FF) +#define U300_SYSCON_S2CCR_CLK_STEAL (0x8000) +#define U300_SYSCON_S2CCR_CLOCK_REQ (0x4000) +#define U300_SYSCON_S2CCR_CLOCK_INV (0x0200) +#define U300_SYSCON_S2CCR_CLOCK_FREQ_MASK (0x01E0) +#define U300_SYSCON_S2CCR_CLOCK_SELECT_MASK (0x001E) +#define U300_SYSCON_S2CCR_CLOCK_ENABLE (0x0001) +#define U300_SYSCON_S2CCR_SEL_MCLK (0x8<<1) +#define U300_SYSCON_S2CCR_SEL_ACC_FSM_CLK (0xA<<1) +#define U300_SYSCON_S2CCR_SEL_PLL60_48_CLK (0xC<<1) +#define U300_SYSCON_S2CCR_SEL_PLL60_60_CLK (0xD<<1) +#define U300_SYSCON_S2CCR_SEL_ACC_PLL208_CLK (0xE<<1) +#define U300_SYSCON_S2CCR_SEL_ACC_PLL13_CLK (0x0<<1) +#define U300_SYSCON_S2CCR_SEL_APP_FSM_CLK (0x2<<1) +#define U300_SYSCON_S2CCR_SEL_RTC_CLK (0x4<<1) +#define U300_SYSCON_S2CCR_SEL_APP_PLL208_CLK (0x6<<1) +/* SYS_MISC_CONTROL, miscellaneous 16bit (R/W) */ +#define U300_SYSCON_MCR (0x12c) +#define U300_SYSCON_MCR_FIELD_MASK (0x00FF) +#define U300_SYSCON_MCR_PMGEN_CR_4_MASK (0x00C0) +#define U300_SYSCON_MCR_PMGEN_CR_4_GPIO (0x0000) +#define U300_SYSCON_MCR_PMGEN_CR_4_SPI (0x0040) +#define U300_SYSCON_MCR_PMGEN_CR_4_AAIF (0x00C0) +#define U300_SYSCON_MCR_PMGEN_CR_2_MASK (0x0030) +#define U300_SYSCON_MCR_PMGEN_CR_2_GPIO (0x0000) +#define U300_SYSCON_MCR_PMGEN_CR_2_EMIF_1_STATIC (0x0010) +#define U300_SYSCON_MCR_PMGEN_CR_2_DSP (0x0020) +#define U300_SYSCON_MCR_PMGEN_CR_2_AAIF (0x0030) +#define U300_SYSCON_MCR_PMGEN_CR_0_MASK (0x000C) +#define U300_SYSCON_MCR_PMGEN_CR_0_EMIF_1_SDRAM_M1 (0x0000) +#define U300_SYSCON_MCR_PMGEN_CR_0_EMIF_1_SDRAM_M2 (0x0004) +#define U300_SYSCON_MCR_PMGEN_CR_0_EMIF_1_SDRAM_M3 (0x0008) +#define U300_SYSCON_MCR_PMGEN_CR_0_EMIF_0_SDRAM (0x000C) +#define U300_SYSCON_MCR_PM1G_MODE_ENABLE (0x0002) +#define U300_SYSCON_MCR_PMTG5_MODE_ENABLE (0x0001) +/* Clock activity observability register 0 */ +#define U300_SYSCON_C0OAR (0x140) +#define U300_SYSCON_C0OAR_MASK (0xFFFF) +#define U300_SYSCON_C0OAR_VALUE (0xFFFF) +#define U300_SYSCON_C0OAR_BT_H_CLK (0x8000) +#define U300_SYSCON_C0OAR_ASPB_P_CLK (0x4000) +#define U300_SYSCON_C0OAR_APP_SEMI_H_CLK (0x2000) +#define U300_SYSCON_C0OAR_APP_SEMI_CLK (0x1000) +#define U300_SYSCON_C0OAR_APP_MMC_MSPRO_CLK (0x0800) +#define U300_SYSCON_C0OAR_APP_I2S1_CLK (0x0400) +#define U300_SYSCON_C0OAR_APP_I2S0_CLK (0x0200) +#define U300_SYSCON_C0OAR_APP_CPU_CLK (0x0100) +#define U300_SYSCON_C0OAR_APP_52_CLK (0x0080) +#define U300_SYSCON_C0OAR_APP_208_CLK (0x0040) +#define U300_SYSCON_C0OAR_APP_104_CLK (0x0020) +#define U300_SYSCON_C0OAR_APEX_CLK (0x0010) +#define U300_SYSCON_C0OAR_AHPB_M_H_CLK (0x0008) +#define U300_SYSCON_C0OAR_AHB_CLK (0x0004) +#define U300_SYSCON_C0OAR_AFPB_P_CLK (0x0002) +#define U300_SYSCON_C0OAR_AAIF_CLK (0x0001) +/* Clock activity observability register 1 */ +#define U300_SYSCON_C1OAR (0x144) +#define U300_SYSCON_C1OAR_MASK (0x3FFE) +#define U300_SYSCON_C1OAR_VALUE (0x3FFE) +#define U300_SYSCON_C1OAR_NFIF_F_CLK (0x2000) +#define U300_SYSCON_C1OAR_MSPRO_CLK (0x1000) +#define U300_SYSCON_C1OAR_MMC_P_CLK (0x0800) +#define U300_SYSCON_C1OAR_MMC_CLK (0x0400) +#define U300_SYSCON_C1OAR_KP_P_CLK (0x0200) +#define U300_SYSCON_C1OAR_I2C1_P_CLK (0x0100) +#define U300_SYSCON_C1OAR_I2C0_P_CLK (0x0080) +#define U300_SYSCON_C1OAR_GPIO_CLK (0x0040) +#define U300_SYSCON_C1OAR_EMIF_MPMC_CLK (0x0020) +#define U300_SYSCON_C1OAR_EMIF_H_CLK (0x0010) +#define U300_SYSCON_C1OAR_EVHIST_CLK (0x0008) +#define U300_SYSCON_C1OAR_PPM_CLK (0x0004) +#define U300_SYSCON_C1OAR_DMA_CLK (0x0002) +/* Clock activity observability register 2 */ +#define U300_SYSCON_C2OAR (0x148) +#define U300_SYSCON_C2OAR_MASK (0x0FFF) +#define U300_SYSCON_C2OAR_VALUE (0x0FFF) +#define U300_SYSCON_C2OAR_XGAM_CDI_CLK (0x0800) +#define U300_SYSCON_C2OAR_XGAM_CLK (0x0400) +#define U300_SYSCON_C2OAR_VC_H_CLK (0x0200) +#define U300_SYSCON_C2OAR_VC_CLK (0x0100) +#define U300_SYSCON_C2OAR_UA_P_CLK (0x0080) +#define U300_SYSCON_C2OAR_TMR1_CLK (0x0040) +#define U300_SYSCON_C2OAR_TMR0_CLK (0x0020) +#define U300_SYSCON_C2OAR_SPI_P_CLK (0x0010) +#define U300_SYSCON_C2OAR_PCM_I2S1_CORE_CLK (0x0008) +#define U300_SYSCON_C2OAR_PCM_I2S1_CLK (0x0004) +#define U300_SYSCON_C2OAR_PCM_I2S0_CORE_CLK (0x0002) +#define U300_SYSCON_C2OAR_PCM_I2S0_CLK (0x0001) + +/* Chip ID register 16bit (R/-) */ +#define U300_SYSCON_CIDR (0x400) +/* Video IRQ clear 16bit (R/W) */ +#define U300_SYSCON_VICR (0x404) +#define U300_SYSCON_VICR_VIDEO1_IRQ_CLEAR_ENABLE (0x0002) +#define U300_SYSCON_VICR_VIDEO0_IRQ_CLEAR_ENABLE (0x0001) +/* SMCR */ +#define U300_SYSCON_SMCR (0x4d0) +#define U300_SYSCON_SMCR_FIELD_MASK (0x000e) +#define U300_SYSCON_SMCR_SEMI_SREFACK_IND (0x0008) +#define U300_SYSCON_SMCR_SEMI_SREFREQ_ENABLE (0x0004) +#define U300_SYSCON_SMCR_SEMI_EXT_BOOT_MODE_ENABLE (0x0002) +/* CPU_SW_DBGEN Software Debug Enable 16bit (R/W) */ +#define U300_SYSCON_CSDR (0x4f0) +#define U300_SYSCON_CSDR_SW_DEBUG_ENABLE (0x0001) +/* PRINT_CONTROL Print Control 16bit (R/-) */ +#define U300_SYSCON_PCR (0x4f8) +#define U300_SYSCON_PCR_SERV_IND (0x0001) +/* BOOT_CONTROL 16bit (R/-) */ +#define U300_SYSCON_BCR (0x4fc) +#define U300_SYSCON_BCR_ACC_CPU_SUBSYS_VINITHI_IND (0x0400) +#define U300_SYSCON_BCR_APP_CPU_SUBSYS_VINITHI_IND (0x0200) +#define U300_SYSCON_BCR_EXTRA_BOOT_OPTION_MASK (0x01FC) +#define U300_SYSCON_BCR_APP_BOOT_SERV_MASK (0x0003) + + +/* CPU clock defines */ +/** + * CPU high frequency in MHz + */ +#define SYSCON_CPU_CLOCK_HIGH 208 +/** + * CPU medium frequency in MHz + */ +#define SYSCON_CPU_CLOCK_MEDIUM 104 +/** + * CPU low frequency in MHz + */ +#define SYSCON_CPU_CLOCK_LOW 13 + +/* EMIF clock defines */ +/** + * EMIF high frequency in MHz + */ +#define SYSCON_EMIF_CLOCK_HIGH 104 +/** + * EMIF medium frequency in MHz + */ +#define SYSCON_EMIF_CLOCK_MEDIUM 104 +/** + * EMIF low frequency in MHz + */ +#define SYSCON_EMIF_CLOCK_LOW 13 + +/* AHB clock defines */ +/** + * AHB high frequency in MHz + */ +#define SYSCON_AHB_CLOCK_HIGH 52 +/** + * AHB medium frequency in MHz + */ +#define SYSCON_AHB_CLOCK_MEDIUM 52 +/** + * AHB low frequency in MHz + */ +#define SYSCON_AHB_CLOCK_LOW 7 /* i.e 13/2=6.5MHz */ + +enum syscon_busmaster { + SYSCON_BM_DMAC, + SYSCON_BM_XGAM, + SYSCON_BM_VIDEO_ENC +}; + +/* + * Note that this array must match the order of the array "clk_reg" + * in syscon.c + */ +enum syscon_clk { + SYSCON_CLKCONTROL_SLOW_BRIDGE, + SYSCON_CLKCONTROL_UART, + SYSCON_CLKCONTROL_BTR, + SYSCON_CLKCONTROL_EH, + SYSCON_CLKCONTROL_GPIO, + SYSCON_CLKCONTROL_KEYPAD, + SYSCON_CLKCONTROL_APP_TIMER, + SYSCON_CLKCONTROL_ACC_TIMER, + SYSCON_CLKCONTROL_FAST_BRIDGE, + SYSCON_CLKCONTROL_I2C0, + SYSCON_CLKCONTROL_I2C1, + SYSCON_CLKCONTROL_I2S0, + SYSCON_CLKCONTROL_I2S1, + SYSCON_CLKCONTROL_MMC, + SYSCON_CLKCONTROL_SPI, + SYSCON_CLKCONTROL_I2S0_CORE, + SYSCON_CLKCONTROL_I2S1_CORE, + SYSCON_CLKCONTROL_AAIF, + SYSCON_CLKCONTROL_AHB, + SYSCON_CLKCONTROL_APEX, + SYSCON_CLKCONTROL_CPU, + SYSCON_CLKCONTROL_DMA, + SYSCON_CLKCONTROL_EMIF, + SYSCON_CLKCONTROL_NAND_IF, + SYSCON_CLKCONTROL_VIDEO_ENC, + SYSCON_CLKCONTROL_XGAM, + SYSCON_CLKCONTROL_SEMI, + SYSCON_CLKCONTROL_AHB_SUBSYS, + SYSCON_CLKCONTROL_MSPRO +}; + +enum syscon_sysclk_mode { + SYSCON_SYSCLK_DISABLED, + SYSCON_SYSCLK_M_CLK, + SYSCON_SYSCLK_ACC_FSM, + SYSCON_SYSCLK_PLL60_48, + SYSCON_SYSCLK_PLL60_60, + SYSCON_SYSCLK_ACC_PLL208, + SYSCON_SYSCLK_APP_PLL13, + SYSCON_SYSCLK_APP_FSM, + SYSCON_SYSCLK_RTC, + SYSCON_SYSCLK_APP_PLL208 +}; + +enum syscon_sysclk_req { + SYSCON_SYSCLKREQ_DISABLED, + SYSCON_SYSCLKREQ_ACTIVE_LOW +}; + +enum syscon_clk_mode { + SYSCON_CLKMODE_OFF, + SYSCON_CLKMODE_DEFAULT, + SYSCON_CLKMODE_LOW, + SYSCON_CLKMODE_MEDIUM, + SYSCON_CLKMODE_HIGH, + SYSCON_CLKMODE_PERMANENT, + SYSCON_CLKMODE_ON, +}; + +enum syscon_call_mode { + SYSCON_CLKCALL_NOWAIT, + SYSCON_CLKCALL_WAIT, +}; + +int syscon_dc_on(bool keep_power_on); +int syscon_set_busmaster_active_state(enum syscon_busmaster busmaster, + bool active); +bool syscon_get_busmaster_active_state(void); +int syscon_set_sleep_mask(enum syscon_clk, + bool sleep_ctrl); +int syscon_config_sysclk(u32 sysclk, + enum syscon_sysclk_mode sysclkmode, + bool inverse, + u32 divisor, + enum syscon_sysclk_req sysclkreq); +bool syscon_can_turn_off_semi_clock(void); + +/* This function is restricted to core.c */ +int syscon_request_normal_power(bool req); + +/* This function is restricted to be used by platform_speed.c */ +int syscon_speed_request(enum syscon_call_mode wait_mode, + enum syscon_clk_mode req_clk_mode); +#endif /* __MACH_SYSCON_H */ diff --git a/arch/arm/mach-u300/include/mach/system.h b/arch/arm/mach-u300/include/mach/system.h new file mode 100644 index 000000000000..8daf13634ce0 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/system.h @@ -0,0 +1,42 @@ +/* + * + * arch/arm/mach-u300/include/mach/system.h + * + * + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * System shutdown and reset functions. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#include <mach/hardware.h> +#include <asm/io.h> +#include <asm/hardware/vic.h> +#include <asm/irq.h> + +/* Forward declare this function from the watchdog */ +void coh901327_watchdog_reset(void); + +static inline void arch_idle(void) +{ + cpu_do_idle(); +} + +static void arch_reset(char mode, const char *cmd) +{ + switch (mode) { + case 's': + case 'h': + printk(KERN_CRIT "RESET: shutting down/rebooting system\n"); + /* Disable interrupts */ + local_irq_disable(); +#ifdef CONFIG_COH901327_WATCHDOG + coh901327_watchdog_reset(); +#endif + break; + default: + /* Do nothing */ + break; + } + /* Wait for system do die/reset. */ + while (1); +} diff --git a/arch/arm/mach-u300/include/mach/timex.h b/arch/arm/mach-u300/include/mach/timex.h new file mode 100644 index 000000000000..f233b72633f6 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/timex.h @@ -0,0 +1,17 @@ +/* + * + * arch/arm/mach-u300/include/mach/timex.h + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Platform tick rate definition. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#ifndef __MACH_TIMEX_H +#define __MACH_TIMEX_H + +/* This is for the APP OS GP1 (General Purpose 1) timer */ +#define CLOCK_TICK_RATE 1000000 + +#endif diff --git a/arch/arm/mach-u300/include/mach/u300-regs.h b/arch/arm/mach-u300/include/mach/u300-regs.h new file mode 100644 index 000000000000..88333dfb19fc --- /dev/null +++ b/arch/arm/mach-u300/include/mach/u300-regs.h @@ -0,0 +1,187 @@ +/* + * + * arch/arm/mach-u300/include/mach/u300-regs.h + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Basic register address definitions in physical memory and + * some block defintions for core devices like the timer. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ + +#ifndef __MACH_U300_REGS_H +#define __MACH_U300_REGS_H + +/* + * These are the large blocks of memory allocated for I/O. + * the defines are used for setting up the I/O memory mapping. + */ + +/* NAND Flash CS0 */ +#define U300_NAND_CS0_PHYS_BASE 0x80000000 +#define U300_NAND_CS0_VIRT_BASE 0xff040000 + +/* NFIF */ +#define U300_NAND_IF_PHYS_BASE 0x9f800000 +#define U300_NAND_IF_VIRT_BASE 0xff030000 + +/* AHB Peripherals */ +#define U300_AHB_PER_PHYS_BASE 0xa0000000 +#define U300_AHB_PER_VIRT_BASE 0xff010000 + +/* FAST Peripherals */ +#define U300_FAST_PER_PHYS_BASE 0xc0000000 +#define U300_FAST_PER_VIRT_BASE 0xff020000 + +/* SLOW Peripherals */ +#define U300_SLOW_PER_PHYS_BASE 0xc0010000 +#define U300_SLOW_PER_VIRT_BASE 0xff000000 + +/* Boot ROM */ +#define U300_BOOTROM_PHYS_BASE 0xffff0000 +#define U300_BOOTROM_VIRT_BASE 0xffff0000 + +/* SEMI config base */ +#ifdef CONFIG_MACH_U300_BS335 +#define U300_SEMI_CONFIG_BASE 0x2FFE0000 +#else +#define U300_SEMI_CONFIG_BASE 0x30000000 +#endif + +/* + * All the following peripherals are specified at their PHYSICAL address, + * so if you need to access them (in the kernel), you MUST use the macros + * defined in <asm/io.h> to map to the IO_ADDRESS_AHB() IO_ADDRESS_FAST() + * etc. + */ + +/* + * AHB peripherals + */ + +/* AHB Peripherals Bridge Controller */ +#define U300_AHB_BRIDGE_BASE (U300_AHB_PER_PHYS_BASE+0x0000) + +/* Vectored Interrupt Controller 0, servicing 32 interrupts */ +#define U300_INTCON0_BASE (U300_AHB_PER_PHYS_BASE+0x1000) +#define U300_INTCON0_VBASE (U300_AHB_PER_VIRT_BASE+0x1000) + +/* Vectored Interrupt Controller 1, servicing 32 interrupts */ +#define U300_INTCON1_BASE (U300_AHB_PER_PHYS_BASE+0x2000) +#define U300_INTCON1_VBASE (U300_AHB_PER_VIRT_BASE+0x2000) + +/* Memory Stick Pro (MSPRO) controller */ +#define U300_MSPRO_BASE (U300_AHB_PER_PHYS_BASE+0x3000) + +/* EMIF Configuration Area */ +#define U300_EMIF_CFG_BASE (U300_AHB_PER_PHYS_BASE+0x4000) + + +/* + * FAST peripherals + */ + +/* FAST bridge control */ +#define U300_FAST_BRIDGE_BASE (U300_FAST_PER_PHYS_BASE+0x0000) + +/* MMC/SD controller */ +#define U300_MMCSD_BASE (U300_FAST_PER_PHYS_BASE+0x1000) + +/* PCM I2S0 controller */ +#define U300_PCM_I2S0_BASE (U300_FAST_PER_PHYS_BASE+0x2000) + +/* PCM I2S1 controller */ +#define U300_PCM_I2S1_BASE (U300_FAST_PER_PHYS_BASE+0x3000) + +/* I2C0 controller */ +#define U300_I2C0_BASE (U300_FAST_PER_PHYS_BASE+0x4000) + +/* I2C1 controller */ +#define U300_I2C1_BASE (U300_FAST_PER_PHYS_BASE+0x5000) + +/* SPI controller */ +#define U300_SPI_BASE (U300_FAST_PER_PHYS_BASE+0x6000) + +#ifdef CONFIG_MACH_U300_BS335 +/* Fast UART1 on U335 only */ +#define U300_UART1_BASE (U300_SLOW_PER_PHYS_BASE+0x7000) +#endif + +/* + * SLOW peripherals + */ + +/* SLOW bridge control */ +#define U300_SLOW_BRIDGE_BASE (U300_SLOW_PER_PHYS_BASE) + +/* SYSCON */ +#define U300_SYSCON_BASE (U300_SLOW_PER_PHYS_BASE+0x1000) +#define U300_SYSCON_VBASE (U300_SLOW_PER_VIRT_BASE+0x1000) + +/* Watchdog */ +#define U300_WDOG_BASE (U300_SLOW_PER_PHYS_BASE+0x2000) + +/* UART0 */ +#define U300_UART0_BASE (U300_SLOW_PER_PHYS_BASE+0x3000) + +/* APP side special timer */ +#define U300_TIMER_APP_BASE (U300_SLOW_PER_PHYS_BASE+0x4000) +#define U300_TIMER_APP_VBASE (U300_SLOW_PER_VIRT_BASE+0x4000) + +/* Keypad */ +#define U300_KEYPAD_BASE (U300_SLOW_PER_PHYS_BASE+0x5000) + +/* GPIO */ +#define U300_GPIO_BASE (U300_SLOW_PER_PHYS_BASE+0x6000) + +/* RTC */ +#define U300_RTC_BASE (U300_SLOW_PER_PHYS_BASE+0x7000) + +/* Bus tracer */ +#define U300_BUSTR_BASE (U300_SLOW_PER_PHYS_BASE+0x8000) + +/* Event handler (hardware queue) */ +#define U300_EVHIST_BASE (U300_SLOW_PER_PHYS_BASE+0x9000) + +/* Genric Timer */ +#define U300_TIMER_BASE (U300_SLOW_PER_PHYS_BASE+0xa000) + +/* PPM */ +#define U300_PPM_BASE (U300_SLOW_PER_PHYS_BASE+0xb000) + + +/* + * REST peripherals + */ + +/* ISP (image signal processor) is only available in U335 */ +#ifdef CONFIG_MACH_U300_BS335 +#define U300_ISP_BASE (0xA0008000) +#endif + +/* DMA Controller base */ +#define U300_DMAC_BASE (0xC0020000) + +/* MSL Base */ +#define U300_MSL_BASE (0xc0022000) + +/* APEX Base */ +#define U300_APEX_BASE (0xc0030000) + +/* Video Encoder Base */ +#ifdef CONFIG_MACH_U300_BS335 +#define U300_VIDEOENC_BASE (0xc0080000) +#else +#define U300_VIDEOENC_BASE (0xc0040000) +#endif + +/* XGAM Base */ +#define U300_XGAM_BASE (0xd0000000) + +/* + * Virtual accessor macros for static devices + */ + + +#endif diff --git a/arch/arm/mach-u300/include/mach/uncompress.h b/arch/arm/mach-u300/include/mach/uncompress.h new file mode 100644 index 000000000000..29acb718acf7 --- /dev/null +++ b/arch/arm/mach-u300/include/mach/uncompress.h @@ -0,0 +1,46 @@ +/* + * arch/arm/mach-u300/include/mach/uncompress.h + * + * Copyright (C) 2003 ARM Limited + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#define AMBA_UART_DR (*(volatile unsigned char *)0xc0013000) +#define AMBA_UART_LCRH (*(volatile unsigned char *)0xc001302C) +#define AMBA_UART_CR (*(volatile unsigned char *)0xc0013030) +#define AMBA_UART_FR (*(volatile unsigned char *)0xc0013018) + +/* + * This does not append a newline + */ +static inline void putc(int c) +{ + while (AMBA_UART_FR & (1 << 5)) + barrier(); + + AMBA_UART_DR = c; +} + +static inline void flush(void) +{ + while (AMBA_UART_FR & (1 << 3)) + barrier(); +} + +/* + * nothing to do + */ +#define arch_decomp_setup() +#define arch_decomp_wdog() diff --git a/arch/arm/mach-u300/include/mach/vmalloc.h b/arch/arm/mach-u300/include/mach/vmalloc.h new file mode 100644 index 000000000000..b00c51a66fbe --- /dev/null +++ b/arch/arm/mach-u300/include/mach/vmalloc.h @@ -0,0 +1,12 @@ +/* + * + * arch/arm/mach-u300/include/mach/vmalloc.h + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Virtual memory allocations + * End must be above the I/O registers and on an even 2MiB boundary. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#define VMALLOC_END 0xfe800000 diff --git a/arch/arm/mach-u300/mmc.c b/arch/arm/mach-u300/mmc.c new file mode 100644 index 000000000000..3138d3955c9e --- /dev/null +++ b/arch/arm/mach-u300/mmc.c @@ -0,0 +1,216 @@ +/* + * + * arch/arm/mach-u300/mmc.c + * + * + * Copyright (C) 2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * + * Author: Linus Walleij <linus.walleij@stericsson.com> + * Author: Johan Lundin <johan.lundin@stericsson.com> + * Author: Jonas Aaberg <jonas.aberg@stericsson.com> + */ +#include <linux/device.h> +#include <linux/amba/bus.h> +#include <linux/mmc/host.h> +#include <linux/input.h> +#include <linux/workqueue.h> +#include <linux/delay.h> +#include <linux/regulator/consumer.h> +#include <linux/regulator/machine.h> +#include <linux/gpio.h> + +#include <asm/mach/mmc.h> +#include "mmc.h" + +struct mmci_card_event { + struct input_dev *mmc_input; + int mmc_inserted; + struct work_struct workq; + struct mmc_platform_data mmc0_plat_data; +}; + +static unsigned int mmc_status(struct device *dev) +{ + struct mmci_card_event *mmci_card = container_of( + dev->platform_data, + struct mmci_card_event, mmc0_plat_data); + + return mmci_card->mmc_inserted; +} + +/* + * Here follows a large chunk of code which will only be enabled if you + * have both the AB3100 chip mounted and the MMC subsystem activated. + */ + +static u32 mmc_translate_vdd(struct device *dev, unsigned int voltage) +{ + int v; + + /* + * MMC Spec: + * bit 7: 1.70 - 1.95V + * bit 8 - 14: 2.0 - 2.6V + * bit 15 - 23: 2.7 - 3.6V + * + * ab3100 voltages: + * 000 - 2.85V + * 001 - 2.75V + * 010 - 1.8V + * 011 - 1.5V + */ + switch (voltage) { + case 8: + v = 3; + break; + case 9: + case 10: + case 11: + case 12: + case 13: + case 14: + case 15: + v = 1; + break; + case 16: + v = 1; + break; + case 17: + case 18: + case 19: + case 20: + case 21: + case 22: + case 23: + case 24: + v = 0; + break; + default: + v = 0; + break; + } + + /* PL180 voltage register bits */ + return v << 2; +} + + + +static int mmci_callback(void *data) +{ + struct mmci_card_event *mmci_card = data; + + disable_irq_on_gpio_pin(U300_GPIO_PIN_MMC_CD); + schedule_work(&mmci_card->workq); + + return 0; +} + + +static ssize_t gpio_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct mmci_card_event *mmci_card = container_of( + dev->platform_data, + struct mmci_card_event, mmc0_plat_data); + + + return sprintf(buf, "%d\n", !mmci_card->mmc_inserted); +} + +static DEVICE_ATTR(mmc_inserted, S_IRUGO, gpio_show, NULL); + +static void _mmci_callback(struct work_struct *ws) +{ + + struct mmci_card_event *mmci_card = container_of( + ws, + struct mmci_card_event, workq); + + mdelay(20); + + mmci_card->mmc_inserted = !!gpio_get_value(U300_GPIO_PIN_MMC_CD); + + input_report_switch(mmci_card->mmc_input, KEY_INSERT, + !mmci_card->mmc_inserted); + input_sync(mmci_card->mmc_input); + + pr_debug("MMC/SD card was %s\n", + mmci_card->mmc_inserted ? "removed" : "inserted"); + + enable_irq_on_gpio_pin(U300_GPIO_PIN_MMC_CD, !mmci_card->mmc_inserted); +} + +int __devinit mmc_init(struct amba_device *adev) +{ + struct mmci_card_event *mmci_card; + struct device *mmcsd_device = &adev->dev; + int ret = 0; + + mmci_card = kzalloc(sizeof(struct mmci_card_event), GFP_KERNEL); + if (!mmci_card) + return -ENOMEM; + + /* Nominally 2.85V on our platform */ + mmci_card->mmc0_plat_data.ocr_mask = MMC_VDD_28_29; + mmci_card->mmc0_plat_data.translate_vdd = mmc_translate_vdd; + mmci_card->mmc0_plat_data.status = mmc_status; + + mmcsd_device->platform_data = (void *) &mmci_card->mmc0_plat_data; + + INIT_WORK(&mmci_card->workq, _mmci_callback); + + ret = gpio_request(U300_GPIO_PIN_MMC_CD, "MMC card detection"); + if (ret) { + printk(KERN_CRIT "Could not allocate MMC card detection " \ + "GPIO pin\n"); + goto out; + } + + ret = gpio_direction_input(U300_GPIO_PIN_MMC_CD); + if (ret) { + printk(KERN_CRIT "Invalid GPIO pin requested\n"); + goto out; + } + + ret = sysfs_create_file(&mmcsd_device->kobj, + &dev_attr_mmc_inserted.attr); + if (ret) + goto out; + + mmci_card->mmc_input = input_allocate_device(); + if (!mmci_card->mmc_input) { + printk(KERN_CRIT "Could not allocate MMC input device\n"); + return -ENOMEM; + } + + mmci_card->mmc_input->name = "MMC insert notification"; + mmci_card->mmc_input->id.bustype = BUS_HOST; + mmci_card->mmc_input->id.vendor = 0; + mmci_card->mmc_input->id.product = 0; + mmci_card->mmc_input->id.version = 0x0100; + mmci_card->mmc_input->dev.parent = mmcsd_device; + input_set_capability(mmci_card->mmc_input, EV_SW, KEY_INSERT); + + /* + * Since this must always be compiled into the kernel, this input + * is never unregistered or free:ed. + */ + ret = input_register_device(mmci_card->mmc_input); + if (ret) { + input_free_device(mmci_card->mmc_input); + goto out; + } + + input_set_drvdata(mmci_card->mmc_input, mmci_card); + + ret = gpio_register_callback(U300_GPIO_PIN_MMC_CD, mmci_callback, + mmci_card); + + schedule_work(&mmci_card->workq); + + printk(KERN_INFO "Registered MMC insert/remove notification\n"); +out: + return ret; +} diff --git a/arch/arm/mach-u300/mmc.h b/arch/arm/mach-u300/mmc.h new file mode 100644 index 000000000000..92b85125abb3 --- /dev/null +++ b/arch/arm/mach-u300/mmc.h @@ -0,0 +1,18 @@ +/* + * + * arch/arm/mach-u300/mmc.h + * + * + * Copyright (C) 2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * + * Author: Jonas Aaberg <jonas.aberg@stericsson.com> + */ +#ifndef MMC_H +#define MMC_H + +#include <linux/amba/bus.h> + +int __devinit mmc_init(struct amba_device *adev); + +#endif diff --git a/arch/arm/mach-u300/padmux.c b/arch/arm/mach-u300/padmux.c new file mode 100644 index 000000000000..f3664564f086 --- /dev/null +++ b/arch/arm/mach-u300/padmux.c @@ -0,0 +1,58 @@ +/* + * + * arch/arm/mach-u300/padmux.c + * + * + * Copyright (C) 2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * U300 PADMUX functions + * Author: Linus Walleij <linus.walleij@stericsson.com> + * + */ +#include <linux/io.h> +#include <linux/err.h> +#include <mach/u300-regs.h> +#include <mach/syscon.h> + +#include "padmux.h" + +/* Set the PAD MUX to route the MMC reader correctly to GPIO0. */ +void pmx_set_mission_mode_mmc(void) +{ + u16 val; + + val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMC1LR); + val &= ~U300_SYSCON_PMC1LR_MMCSD_MASK; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMC1LR); + val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); + val &= ~U300_SYSCON_PMC1HR_APP_GPIO_1_MASK; + val |= U300_SYSCON_PMC1HR_APP_GPIO_1_MMC; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); +} + +void pmx_set_mission_mode_spi(void) +{ + u16 val; + + /* Set up padmuxing so the SPI port and its chipselects are active */ + val = readw(U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); + /* + * Activate the SPI port (disable the use of these pins for generic + * GPIO, DSP, AAIF + */ + val &= ~U300_SYSCON_PMC1HR_APP_SPI_2_MASK; + val |= U300_SYSCON_PMC1HR_APP_SPI_2_SPI; + /* + * Use GPIO pin SPI CS1 for CS1 actually (it can be used for other + * things also) + */ + val &= ~U300_SYSCON_PMC1HR_APP_SPI_CS_1_MASK; + val |= U300_SYSCON_PMC1HR_APP_SPI_CS_1_SPI; + /* + * Use GPIO pin SPI CS2 for CS2 actually (it can be used for other + * things also) + */ + val &= ~U300_SYSCON_PMC1HR_APP_SPI_CS_2_MASK; + val |= U300_SYSCON_PMC1HR_APP_SPI_CS_2_SPI; + writew(val, U300_SYSCON_VBASE + U300_SYSCON_PMC1HR); +} diff --git a/arch/arm/mach-u300/padmux.h b/arch/arm/mach-u300/padmux.h new file mode 100644 index 000000000000..8c2099ac5046 --- /dev/null +++ b/arch/arm/mach-u300/padmux.h @@ -0,0 +1,19 @@ +/* + * + * arch/arm/mach-u300/padmux.h + * + * + * Copyright (C) 2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * U300 PADMUX API + * Author: Linus Walleij <linus.walleij@stericsson.com> + * + */ + +#ifndef __MACH_U300_PADMUX_H +#define __MACH_U300_PADMUX_H + +void pmx_set_mission_mode_mmc(void); +void pmx_set_mission_mode_spi(void); + +#endif diff --git a/arch/arm/mach-u300/timer.c b/arch/arm/mach-u300/timer.c new file mode 100644 index 000000000000..cce53204880e --- /dev/null +++ b/arch/arm/mach-u300/timer.c @@ -0,0 +1,422 @@ +/* + * + * arch/arm/mach-u300/timer.c + * + * + * Copyright (C) 2007-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Timer COH 901 328, runs the OS timer interrupt. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#include <linux/interrupt.h> +#include <linux/time.h> +#include <linux/timex.h> +#include <linux/clockchips.h> +#include <linux/clocksource.h> +#include <linux/types.h> +#include <linux/io.h> + +#include <mach/hardware.h> + +/* Generic stuff */ +#include <asm/mach/map.h> +#include <asm/mach/time.h> +#include <asm/mach/irq.h> + +#include "clock.h" + +/* + * APP side special timer registers + * This timer contains four timers which can fire an interrupt each. + * OS (operating system) timer @ 32768 Hz + * DD (device driver) timer @ 1 kHz + * GP1 (general purpose 1) timer @ 1MHz + * GP2 (general purpose 2) timer @ 1MHz + */ + +/* Reset OS Timer 32bit (-/W) */ +#define U300_TIMER_APP_ROST (0x0000) +#define U300_TIMER_APP_ROST_TIMER_RESET (0x00000000) +/* Enable OS Timer 32bit (-/W) */ +#define U300_TIMER_APP_EOST (0x0004) +#define U300_TIMER_APP_EOST_TIMER_ENABLE (0x00000000) +/* Disable OS Timer 32bit (-/W) */ +#define U300_TIMER_APP_DOST (0x0008) +#define U300_TIMER_APP_DOST_TIMER_DISABLE (0x00000000) +/* OS Timer Mode Register 32bit (-/W) */ +#define U300_TIMER_APP_SOSTM (0x000c) +#define U300_TIMER_APP_SOSTM_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_SOSTM_MODE_ONE_SHOT (0x00000001) +/* OS Timer Status Register 32bit (R/-) */ +#define U300_TIMER_APP_OSTS (0x0010) +#define U300_TIMER_APP_OSTS_TIMER_STATE_MASK (0x0000000F) +#define U300_TIMER_APP_OSTS_TIMER_STATE_IDLE (0x00000001) +#define U300_TIMER_APP_OSTS_TIMER_STATE_ACTIVE (0x00000002) +#define U300_TIMER_APP_OSTS_ENABLE_IND (0x00000010) +#define U300_TIMER_APP_OSTS_MODE_MASK (0x00000020) +#define U300_TIMER_APP_OSTS_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_OSTS_MODE_ONE_SHOT (0x00000020) +#define U300_TIMER_APP_OSTS_IRQ_ENABLED_IND (0x00000040) +#define U300_TIMER_APP_OSTS_IRQ_PENDING_IND (0x00000080) +/* OS Timer Current Count Register 32bit (R/-) */ +#define U300_TIMER_APP_OSTCC (0x0014) +/* OS Timer Terminal Count Register 32bit (R/W) */ +#define U300_TIMER_APP_OSTTC (0x0018) +/* OS Timer Interrupt Enable Register 32bit (-/W) */ +#define U300_TIMER_APP_OSTIE (0x001c) +#define U300_TIMER_APP_OSTIE_IRQ_DISABLE (0x00000000) +#define U300_TIMER_APP_OSTIE_IRQ_ENABLE (0x00000001) +/* OS Timer Interrupt Acknowledge Register 32bit (-/W) */ +#define U300_TIMER_APP_OSTIA (0x0020) +#define U300_TIMER_APP_OSTIA_IRQ_ACK (0x00000080) + +/* Reset DD Timer 32bit (-/W) */ +#define U300_TIMER_APP_RDDT (0x0040) +#define U300_TIMER_APP_RDDT_TIMER_RESET (0x00000000) +/* Enable DD Timer 32bit (-/W) */ +#define U300_TIMER_APP_EDDT (0x0044) +#define U300_TIMER_APP_EDDT_TIMER_ENABLE (0x00000000) +/* Disable DD Timer 32bit (-/W) */ +#define U300_TIMER_APP_DDDT (0x0048) +#define U300_TIMER_APP_DDDT_TIMER_DISABLE (0x00000000) +/* DD Timer Mode Register 32bit (-/W) */ +#define U300_TIMER_APP_SDDTM (0x004c) +#define U300_TIMER_APP_SDDTM_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_SDDTM_MODE_ONE_SHOT (0x00000001) +/* DD Timer Status Register 32bit (R/-) */ +#define U300_TIMER_APP_DDTS (0x0050) +#define U300_TIMER_APP_DDTS_TIMER_STATE_MASK (0x0000000F) +#define U300_TIMER_APP_DDTS_TIMER_STATE_IDLE (0x00000001) +#define U300_TIMER_APP_DDTS_TIMER_STATE_ACTIVE (0x00000002) +#define U300_TIMER_APP_DDTS_ENABLE_IND (0x00000010) +#define U300_TIMER_APP_DDTS_MODE_MASK (0x00000020) +#define U300_TIMER_APP_DDTS_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_DDTS_MODE_ONE_SHOT (0x00000020) +#define U300_TIMER_APP_DDTS_IRQ_ENABLED_IND (0x00000040) +#define U300_TIMER_APP_DDTS_IRQ_PENDING_IND (0x00000080) +/* DD Timer Current Count Register 32bit (R/-) */ +#define U300_TIMER_APP_DDTCC (0x0054) +/* DD Timer Terminal Count Register 32bit (R/W) */ +#define U300_TIMER_APP_DDTTC (0x0058) +/* DD Timer Interrupt Enable Register 32bit (-/W) */ +#define U300_TIMER_APP_DDTIE (0x005c) +#define U300_TIMER_APP_DDTIE_IRQ_DISABLE (0x00000000) +#define U300_TIMER_APP_DDTIE_IRQ_ENABLE (0x00000001) +/* DD Timer Interrupt Acknowledge Register 32bit (-/W) */ +#define U300_TIMER_APP_DDTIA (0x0060) +#define U300_TIMER_APP_DDTIA_IRQ_ACK (0x00000080) + +/* Reset GP1 Timer 32bit (-/W) */ +#define U300_TIMER_APP_RGPT1 (0x0080) +#define U300_TIMER_APP_RGPT1_TIMER_RESET (0x00000000) +/* Enable GP1 Timer 32bit (-/W) */ +#define U300_TIMER_APP_EGPT1 (0x0084) +#define U300_TIMER_APP_EGPT1_TIMER_ENABLE (0x00000000) +/* Disable GP1 Timer 32bit (-/W) */ +#define U300_TIMER_APP_DGPT1 (0x0088) +#define U300_TIMER_APP_DGPT1_TIMER_DISABLE (0x00000000) +/* GP1 Timer Mode Register 32bit (-/W) */ +#define U300_TIMER_APP_SGPT1M (0x008c) +#define U300_TIMER_APP_SGPT1M_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT (0x00000001) +/* GP1 Timer Status Register 32bit (R/-) */ +#define U300_TIMER_APP_GPT1S (0x0090) +#define U300_TIMER_APP_GPT1S_TIMER_STATE_MASK (0x0000000F) +#define U300_TIMER_APP_GPT1S_TIMER_STATE_IDLE (0x00000001) +#define U300_TIMER_APP_GPT1S_TIMER_STATE_ACTIVE (0x00000002) +#define U300_TIMER_APP_GPT1S_ENABLE_IND (0x00000010) +#define U300_TIMER_APP_GPT1S_MODE_MASK (0x00000020) +#define U300_TIMER_APP_GPT1S_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_GPT1S_MODE_ONE_SHOT (0x00000020) +#define U300_TIMER_APP_GPT1S_IRQ_ENABLED_IND (0x00000040) +#define U300_TIMER_APP_GPT1S_IRQ_PENDING_IND (0x00000080) +/* GP1 Timer Current Count Register 32bit (R/-) */ +#define U300_TIMER_APP_GPT1CC (0x0094) +/* GP1 Timer Terminal Count Register 32bit (R/W) */ +#define U300_TIMER_APP_GPT1TC (0x0098) +/* GP1 Timer Interrupt Enable Register 32bit (-/W) */ +#define U300_TIMER_APP_GPT1IE (0x009c) +#define U300_TIMER_APP_GPT1IE_IRQ_DISABLE (0x00000000) +#define U300_TIMER_APP_GPT1IE_IRQ_ENABLE (0x00000001) +/* GP1 Timer Interrupt Acknowledge Register 32bit (-/W) */ +#define U300_TIMER_APP_GPT1IA (0x00a0) +#define U300_TIMER_APP_GPT1IA_IRQ_ACK (0x00000080) + +/* Reset GP2 Timer 32bit (-/W) */ +#define U300_TIMER_APP_RGPT2 (0x00c0) +#define U300_TIMER_APP_RGPT2_TIMER_RESET (0x00000000) +/* Enable GP2 Timer 32bit (-/W) */ +#define U300_TIMER_APP_EGPT2 (0x00c4) +#define U300_TIMER_APP_EGPT2_TIMER_ENABLE (0x00000000) +/* Disable GP2 Timer 32bit (-/W) */ +#define U300_TIMER_APP_DGPT2 (0x00c8) +#define U300_TIMER_APP_DGPT2_TIMER_DISABLE (0x00000000) +/* GP2 Timer Mode Register 32bit (-/W) */ +#define U300_TIMER_APP_SGPT2M (0x00cc) +#define U300_TIMER_APP_SGPT2M_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_SGPT2M_MODE_ONE_SHOT (0x00000001) +/* GP2 Timer Status Register 32bit (R/-) */ +#define U300_TIMER_APP_GPT2S (0x00d0) +#define U300_TIMER_APP_GPT2S_TIMER_STATE_MASK (0x0000000F) +#define U300_TIMER_APP_GPT2S_TIMER_STATE_IDLE (0x00000001) +#define U300_TIMER_APP_GPT2S_TIMER_STATE_ACTIVE (0x00000002) +#define U300_TIMER_APP_GPT2S_ENABLE_IND (0x00000010) +#define U300_TIMER_APP_GPT2S_MODE_MASK (0x00000020) +#define U300_TIMER_APP_GPT2S_MODE_CONTINUOUS (0x00000000) +#define U300_TIMER_APP_GPT2S_MODE_ONE_SHOT (0x00000020) +#define U300_TIMER_APP_GPT2S_IRQ_ENABLED_IND (0x00000040) +#define U300_TIMER_APP_GPT2S_IRQ_PENDING_IND (0x00000080) +/* GP2 Timer Current Count Register 32bit (R/-) */ +#define U300_TIMER_APP_GPT2CC (0x00d4) +/* GP2 Timer Terminal Count Register 32bit (R/W) */ +#define U300_TIMER_APP_GPT2TC (0x00d8) +/* GP2 Timer Interrupt Enable Register 32bit (-/W) */ +#define U300_TIMER_APP_GPT2IE (0x00dc) +#define U300_TIMER_APP_GPT2IE_IRQ_DISABLE (0x00000000) +#define U300_TIMER_APP_GPT2IE_IRQ_ENABLE (0x00000001) +/* GP2 Timer Interrupt Acknowledge Register 32bit (-/W) */ +#define U300_TIMER_APP_GPT2IA (0x00e0) +#define U300_TIMER_APP_GPT2IA_IRQ_ACK (0x00000080) + +/* Clock request control register - all four timers */ +#define U300_TIMER_APP_CRC (0x100) +#define U300_TIMER_APP_CRC_CLOCK_REQUEST_ENABLE (0x00000001) + +#define TICKS_PER_JIFFY ((CLOCK_TICK_RATE + (HZ/2)) / HZ) +#define US_PER_TICK ((1000000 + (HZ/2)) / HZ) + +/* + * The u300_set_mode() function is always called first, if we + * have oneshot timer active, the oneshot scheduling function + * u300_set_next_event() is called immediately after. + */ +static void u300_set_mode(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + switch (mode) { + case CLOCK_EVT_MODE_PERIODIC: + /* Disable interrupts on GPT1 */ + writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE); + /* Disable GP1 while we're reprogramming it. */ + writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1); + /* + * Set the periodic mode to a certain number of ticks per + * jiffy. + */ + writel(TICKS_PER_JIFFY, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC); + /* + * Set continuous mode, so the timer keeps triggering + * interrupts. + */ + writel(U300_TIMER_APP_SGPT1M_MODE_CONTINUOUS, + U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M); + /* Enable timer interrupts */ + writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE); + /* Then enable the OS timer again */ + writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1); + break; + case CLOCK_EVT_MODE_ONESHOT: + /* Just break; here? */ + /* + * The actual event will be programmed by the next event hook, + * so we just set a dummy value somewhere at the end of the + * universe here. + */ + /* Disable interrupts on GPT1 */ + writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE); + /* Disable GP1 while we're reprogramming it. */ + writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1); + /* + * Expire far in the future, u300_set_next_event() will be + * called soon... + */ + writel(0xFFFFFFFF, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC); + /* We run one shot per tick here! */ + writel(U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT, + U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M); + /* Enable interrupts for this timer */ + writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE); + /* Enable timer */ + writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1); + break; + case CLOCK_EVT_MODE_UNUSED: + case CLOCK_EVT_MODE_SHUTDOWN: + /* Disable interrupts on GP1 */ + writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE); + /* Disable GP1 */ + writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1); + break; + case CLOCK_EVT_MODE_RESUME: + /* Ignore this call */ + break; + } +} + +/* + * The app timer in one shot mode obviously has to be reprogrammed + * in EXACTLY this sequence to work properly. Do NOT try to e.g. replace + * the interrupt disable + timer disable commands with a reset command, + * it will fail miserably. Apparently (and I found this the hard way) + * the timer is very sensitive to the instruction order, though you don't + * get that impression from the data sheet. + */ +static int u300_set_next_event(unsigned long cycles, + struct clock_event_device *evt) + +{ + /* Disable interrupts on GPT1 */ + writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE); + /* Disable GP1 while we're reprogramming it. */ + writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1); + /* Reset the General Purpose timer 1. */ + writel(U300_TIMER_APP_RGPT1_TIMER_RESET, + U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT1); + /* IRQ in n * cycles */ + writel(cycles, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC); + /* + * We run one shot per tick here! (This is necessary to reconfigure, + * the timer will tilt if you don't!) + */ + writel(U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT, + U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M); + /* Enable timer interrupts */ + writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE); + /* Then enable the OS timer again */ + writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1); + return 0; +} + + +/* Use general purpose timer 1 as clock event */ +static struct clock_event_device clockevent_u300_1mhz = { + .name = "GPT1", + .rating = 300, /* Reasonably fast and accurate clock event */ + .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, + /* 22 calculated using the algorithm in arch/mips/kernel/time.c */ + .shift = 22, + .set_next_event = u300_set_next_event, + .set_mode = u300_set_mode, +}; + +/* Clock event timer interrupt handler */ +static irqreturn_t u300_timer_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *evt = &clockevent_u300_1mhz; + /* ACK/Clear timer IRQ for the APP GPT1 Timer */ + writel(U300_TIMER_APP_GPT1IA_IRQ_ACK, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IA); + evt->event_handler(evt); + return IRQ_HANDLED; +} + +static struct irqaction u300_timer_irq = { + .name = "U300 Timer Tick", + .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .handler = u300_timer_interrupt, +}; + +/* Use general purpose timer 2 as clock source */ +static cycle_t u300_get_cycles(struct clocksource *cs) +{ + return (cycles_t) readl(U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2CC); +} + +static struct clocksource clocksource_u300_1mhz = { + .name = "GPT2", + .rating = 300, /* Reasonably fast and accurate clock source */ + .read = u300_get_cycles, + .mask = CLOCKSOURCE_MASK(32), /* 32 bits */ + /* 22 calculated using the algorithm in arch/mips/kernel/time.c */ + .shift = 22, + .flags = CLOCK_SOURCE_IS_CONTINUOUS, +}; + + +/* + * This sets up the system timers, clock source and clock event. + */ +static void __init u300_timer_init(void) +{ + u300_enable_timer_clock(); + /* + * Disable the "OS" and "DD" timers - these are designed for Symbian! + * Example usage in cnh1601578 cpu subsystem pd_timer_app.c + */ + writel(U300_TIMER_APP_CRC_CLOCK_REQUEST_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_CRC); + writel(U300_TIMER_APP_ROST_TIMER_RESET, + U300_TIMER_APP_VBASE + U300_TIMER_APP_ROST); + writel(U300_TIMER_APP_DOST_TIMER_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_DOST); + writel(U300_TIMER_APP_RDDT_TIMER_RESET, + U300_TIMER_APP_VBASE + U300_TIMER_APP_RDDT); + writel(U300_TIMER_APP_DDDT_TIMER_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_DDDT); + + /* Reset the General Purpose timer 1. */ + writel(U300_TIMER_APP_RGPT1_TIMER_RESET, + U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT1); + + /* Set up the IRQ handler */ + setup_irq(IRQ_U300_TIMER_APP_GP1, &u300_timer_irq); + + /* Reset the General Purpose timer 2 */ + writel(U300_TIMER_APP_RGPT2_TIMER_RESET, + U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT2); + /* Set this timer to run around forever */ + writel(0xFFFFFFFFU, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2TC); + /* Set continuous mode so it wraps around */ + writel(U300_TIMER_APP_SGPT2M_MODE_CONTINUOUS, + U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT2M); + /* Disable timer interrupts */ + writel(U300_TIMER_APP_GPT2IE_IRQ_DISABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2IE); + /* Then enable the GP2 timer to use as a free running us counter */ + writel(U300_TIMER_APP_EGPT2_TIMER_ENABLE, + U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT2); + + /* This is a pure microsecond clock source */ + clocksource_u300_1mhz.mult = + clocksource_khz2mult(1000, clocksource_u300_1mhz.shift); + if (clocksource_register(&clocksource_u300_1mhz)) + printk(KERN_ERR "timer: failed to initialize clock " + "source %s\n", clocksource_u300_1mhz.name); + + clockevent_u300_1mhz.mult = + div_sc(1000000, NSEC_PER_SEC, clockevent_u300_1mhz.shift); + /* 32bit counter, so 32bits delta is max */ + clockevent_u300_1mhz.max_delta_ns = + clockevent_delta2ns(0xffffffff, &clockevent_u300_1mhz); + /* This timer is slow enough to set for 1 cycle == 1 MHz */ + clockevent_u300_1mhz.min_delta_ns = + clockevent_delta2ns(1, &clockevent_u300_1mhz); + clockevent_u300_1mhz.cpumask = cpumask_of(0); + clockevents_register_device(&clockevent_u300_1mhz); + /* + * TODO: init and register the rest of the timers too, they can be + * used by hrtimers! + */ +} + +/* + * Very simple system timer that only register the clock event and + * clock source. + */ +struct sys_timer u300_timer = { + .init = u300_timer_init, +}; diff --git a/arch/arm/mach-u300/u300.c b/arch/arm/mach-u300/u300.c new file mode 100644 index 000000000000..d2a0b8847a18 --- /dev/null +++ b/arch/arm/mach-u300/u300.c @@ -0,0 +1,55 @@ +/* + * + * arch/arm/mach-u300/u300.c + * + * + * Copyright (C) 2006-2009 ST-Ericsson AB + * License terms: GNU General Public License (GPL) version 2 + * Platform machine definition. + * Author: Linus Walleij <linus.walleij@stericsson.com> + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <mach/hardware.h> +#include <mach/platform.h> +#include <mach/memory.h> +#include <asm/mach-types.h> +#include <asm/mach/arch.h> + +static void __init u300_init_machine(void) +{ + u300_init_devices(); +} + +#ifdef CONFIG_MACH_U300_BS2X +#define MACH_U300_STRING "Ericsson AB U300 S25/S26/B25/B26 Prototype Board" +#endif + +#ifdef CONFIG_MACH_U300_BS330 +#define MACH_U300_STRING "Ericsson AB U330 S330/B330 Prototype Board" +#endif + +#ifdef CONFIG_MACH_U300_BS335 +#define MACH_U300_STRING "Ericsson AB U335 S335/B335 Prototype Board" +#endif + +#ifdef CONFIG_MACH_U300_BS365 +#define MACH_U300_STRING "Ericsson AB U365 S365/B365 Prototype Board" +#endif + +MACHINE_START(U300, MACH_U300_STRING) + /* Maintainer: Linus Walleij <linus.walleij@stericsson.com> */ + .phys_io = U300_AHB_PER_PHYS_BASE, + .io_pg_offst = ((U300_AHB_PER_VIRT_BASE) >> 18) & 0xfffc, + .boot_params = BOOT_PARAMS_OFFSET, + .map_io = u300_map_io, + .init_irq = u300_init_irq, + .timer = &u300_timer, + .init_machine = u300_init_machine, +MACHINE_END |