diff options
Diffstat (limited to 'arch/arm/mach-prima2')
| -rw-r--r-- | arch/arm/mach-prima2/Kconfig | 48 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/Makefile | 9 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/common.c | 64 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/common.h | 32 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/headsmp.S | 36 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/hotplug.c | 38 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/platsmp.c | 123 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/pm.c | 153 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/pm.h | 28 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/rstc.c | 107 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/rtciobrg.c | 179 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/sleep.S | 63 |
12 files changed, 0 insertions, 880 deletions
diff --git a/arch/arm/mach-prima2/Kconfig b/arch/arm/mach-prima2/Kconfig deleted file mode 100644 index ea077f66372d..000000000000 --- a/arch/arm/mach-prima2/Kconfig +++ /dev/null @@ -1,48 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -menuconfig ARCH_SIRF - bool "CSR SiRF" - depends on ARCH_MULTI_V7 - select ARCH_HAS_RESET_CONTROLLER - select RESET_CONTROLLER - select GENERIC_IRQ_CHIP - select GPIOLIB - select NO_IOPORT_MAP - select REGMAP - select PINCTRL - select PINCTRL_SIRF - help - Support for CSR SiRFprimaII/Marco/Polo platforms - -if ARCH_SIRF - -comment "CSR SiRF atlas6/primaII/Atlas7 Specific Features" - -config ARCH_ATLAS6 - bool "CSR SiRFSoC ATLAS6 ARM Cortex A9 Platform" - default y - select SIRF_IRQ - help - Support for CSR SiRFSoC ARM Cortex A9 Platform - -config ARCH_ATLAS7 - bool "CSR SiRFSoC ATLAS7 ARM Cortex A7 Platform" - default y - select ARM_GIC - select ATLAS7_TIMER - select HAVE_ARM_SCU if SMP - help - Support for CSR SiRFSoC ARM Cortex A7 Platform - -config ARCH_PRIMA2 - bool "CSR SiRFSoC PRIMA2 ARM Cortex A9 Platform" - default y - select SIRF_IRQ - select ZONE_DMA - select PRIMA2_TIMER - help - Support for CSR SiRFSoC ARM Cortex A9 Platform - -config SIRF_IRQ - bool - -endif diff --git a/arch/arm/mach-prima2/Makefile b/arch/arm/mach-prima2/Makefile deleted file mode 100644 index 0fd2763031e9..000000000000 --- a/arch/arm/mach-prima2/Makefile +++ /dev/null @@ -1,9 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -obj-y += rstc.o -obj-y += common.o -obj-y += rtciobrg.o -obj-$(CONFIG_SUSPEND) += pm.o sleep.o -obj-$(CONFIG_SMP) += platsmp.o headsmp.o -obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o - -CFLAGS_hotplug.o += -march=armv7-a diff --git a/arch/arm/mach-prima2/common.c b/arch/arm/mach-prima2/common.c deleted file mode 100644 index e2d158e331e2..000000000000 --- a/arch/arm/mach-prima2/common.c +++ /dev/null @@ -1,64 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Defines machines for CSR SiRFprimaII - * - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/sizes.h> -#include <asm/mach-types.h> -#include <asm/mach/arch.h> -#include <linux/of.h> -#include <linux/of_platform.h> -#include "common.h" - -static void __init __maybe_unused sirfsoc_init_late(void) -{ - sirfsoc_pm_init(); -} - -#ifdef CONFIG_ARCH_ATLAS6 -static const char *const atlas6_dt_match[] __initconst = { - "sirf,atlas6", - NULL -}; - -DT_MACHINE_START(ATLAS6_DT, "Generic ATLAS6 (Flattened Device Tree)") - /* Maintainer: Barry Song <baohua.song@csr.com> */ - .l2c_aux_val = 0, - .l2c_aux_mask = ~0, - .init_late = sirfsoc_init_late, - .dt_compat = atlas6_dt_match, -MACHINE_END -#endif - -#ifdef CONFIG_ARCH_PRIMA2 -static const char *const prima2_dt_match[] __initconst = { - "sirf,prima2", - NULL -}; - -DT_MACHINE_START(PRIMA2_DT, "Generic PRIMA2 (Flattened Device Tree)") - /* Maintainer: Barry Song <baohua.song@csr.com> */ - .l2c_aux_val = 0, - .l2c_aux_mask = ~0, - .dma_zone_size = SZ_256M, - .init_late = sirfsoc_init_late, - .dt_compat = prima2_dt_match, -MACHINE_END -#endif - -#ifdef CONFIG_ARCH_ATLAS7 -static const char *const atlas7_dt_match[] __initconst = { - "sirf,atlas7", - NULL -}; - -DT_MACHINE_START(ATLAS7_DT, "Generic ATLAS7 (Flattened Device Tree)") - /* Maintainer: Barry Song <baohua.song@csr.com> */ - .smp = smp_ops(sirfsoc_smp_ops), - .dt_compat = atlas7_dt_match, -MACHINE_END -#endif diff --git a/arch/arm/mach-prima2/common.h b/arch/arm/mach-prima2/common.h deleted file mode 100644 index 3bab7e571ded..000000000000 --- a/arch/arm/mach-prima2/common.h +++ /dev/null @@ -1,32 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * This file contains common function prototypes to avoid externs in the c files. - * - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#ifndef __MACH_PRIMA2_COMMON_H__ -#define __MACH_PRIMA2_COMMON_H__ - -#include <linux/init.h> -#include <linux/reboot.h> - -#include <asm/mach/time.h> -#include <asm/exception.h> - -extern volatile int prima2_pen_release; - -extern const struct smp_operations sirfsoc_smp_ops; -extern void sirfsoc_secondary_startup(void); -extern void sirfsoc_cpu_die(unsigned int cpu); - -extern void __init sirfsoc_of_irq_init(void); -extern asmlinkage void __exception_irq_entry sirfsoc_handle_irq(struct pt_regs *regs); - -#ifdef CONFIG_SUSPEND -extern int sirfsoc_pm_init(void); -#else -static inline int sirfsoc_pm_init(void) { return 0; } -#endif - -#endif diff --git a/arch/arm/mach-prima2/headsmp.S b/arch/arm/mach-prima2/headsmp.S deleted file mode 100644 index 88ea1243942a..000000000000 --- a/arch/arm/mach-prima2/headsmp.S +++ /dev/null @@ -1,36 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Entry of the second core for CSR Marco dual-core SMP SoCs - * - * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/linkage.h> -#include <linux/init.h> - -/* - * SIRFSOC specific entry point for secondary CPUs. This provides - * a "holding pen" into which all secondary cores are held until we're - * ready for them to initialise. - */ -ENTRY(sirfsoc_secondary_startup) - mrc p15, 0, r0, c0, c0, 5 - and r0, r0, #15 - adr r4, 1f - ldmia r4, {r5, r6} - sub r4, r4, r5 - add r6, r6, r4 -pen: ldr r7, [r6] - cmp r7, r0 - bne pen - - /* - * we've been released from the holding pen: secondary_stack - * should now contain the SVC stack for this core - */ - b secondary_startup -ENDPROC(sirfsoc_secondary_startup) - - .align -1: .long . - .long prima2_pen_release diff --git a/arch/arm/mach-prima2/hotplug.c b/arch/arm/mach-prima2/hotplug.c deleted file mode 100644 index bc0d957e89ac..000000000000 --- a/arch/arm/mach-prima2/hotplug.c +++ /dev/null @@ -1,38 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * CPU hotplug support for CSR Marco dual-core SMP SoCs - * - * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/smp.h> - -#include <asm/smp_plat.h> -#include "common.h" - -static inline void platform_do_lowpower(unsigned int cpu) -{ - /* we put the platform to just WFI */ - for (;;) { - __asm__ __volatile__("dsb\n\t" "wfi\n\t" - : : : "memory"); - if (prima2_pen_release == cpu_logical_map(cpu)) { - /* - * OK, proper wakeup, we're done - */ - break; - } - } -} - -/* - * platform-specific code to shutdown a CPU - * - * Called with IRQs disabled - */ -void sirfsoc_cpu_die(unsigned int cpu) -{ - platform_do_lowpower(cpu); -} diff --git a/arch/arm/mach-prima2/platsmp.c b/arch/arm/mach-prima2/platsmp.c deleted file mode 100644 index 8f7bbb57fb20..000000000000 --- a/arch/arm/mach-prima2/platsmp.c +++ /dev/null @@ -1,123 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * plat smp support for CSR Marco dual-core SMP SoCs - * - * Copyright (c) 2012 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/delay.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <asm/page.h> -#include <asm/mach/map.h> -#include <asm/smp_plat.h> -#include <asm/smp_scu.h> -#include <asm/cacheflush.h> -#include <asm/cputype.h> - -#include "common.h" - -static void __iomem *clk_base; - -static DEFINE_SPINLOCK(boot_lock); - -/* XXX prima2_pen_release is cargo culted code - DO NOT COPY XXX */ -volatile int prima2_pen_release = -1; - -static void sirfsoc_secondary_init(unsigned int cpu) -{ - /* - * let the primary processor know we're out of the - * pen, then head off into the C entry point - */ - prima2_pen_release = -1; - smp_wmb(); - - /* - * Synchronise with the boot thread. - */ - spin_lock(&boot_lock); - spin_unlock(&boot_lock); -} - -static const struct of_device_id clk_ids[] = { - { .compatible = "sirf,atlas7-clkc" }, - {}, -}; - -static int sirfsoc_boot_secondary(unsigned int cpu, struct task_struct *idle) -{ - unsigned long timeout; - struct device_node *np; - - np = of_find_matching_node(NULL, clk_ids); - if (!np) - return -ENODEV; - - clk_base = of_iomap(np, 0); - if (!clk_base) - return -ENOMEM; - - /* - * write the address of secondary startup into the clkc register - * at offset 0x2bC, then write the magic number 0x3CAF5D62 to the - * clkc register at offset 0x2b8, which is what boot rom code is - * waiting for. This would wake up the secondary core from WFE - */ -#define SIRFSOC_CPU1_JUMPADDR_OFFSET 0x2bc - __raw_writel(__pa_symbol(sirfsoc_secondary_startup), - clk_base + SIRFSOC_CPU1_JUMPADDR_OFFSET); - -#define SIRFSOC_CPU1_WAKEMAGIC_OFFSET 0x2b8 - __raw_writel(0x3CAF5D62, - clk_base + SIRFSOC_CPU1_WAKEMAGIC_OFFSET); - - /* make sure write buffer is drained */ - mb(); - - spin_lock(&boot_lock); - - /* - * The secondary processor is waiting to be released from - * the holding pen - release it, then wait for it to flag - * that it has been released by resetting prima2_pen_release. - * - * Note that "prima2_pen_release" is the hardware CPU ID, whereas - * "cpu" is Linux's internal ID. - */ - prima2_pen_release = cpu_logical_map(cpu); - sync_cache_w(&prima2_pen_release); - - /* - * Send the secondary CPU SEV, thereby causing the boot monitor to read - * the JUMPADDR and WAKEMAGIC, and branch to the address found there. - */ - dsb_sev(); - - timeout = jiffies + (1 * HZ); - while (time_before(jiffies, timeout)) { - smp_rmb(); - if (prima2_pen_release == -1) - break; - - udelay(10); - } - - /* - * now the secondary core is starting up let it run its - * calibrations, then wait for it to finish - */ - spin_unlock(&boot_lock); - - return prima2_pen_release != -1 ? -ENOSYS : 0; -} - -const struct smp_operations sirfsoc_smp_ops __initconst = { - .smp_secondary_init = sirfsoc_secondary_init, - .smp_boot_secondary = sirfsoc_boot_secondary, -#ifdef CONFIG_HOTPLUG_CPU - .cpu_die = sirfsoc_cpu_die, -#endif -}; diff --git a/arch/arm/mach-prima2/pm.c b/arch/arm/mach-prima2/pm.c deleted file mode 100644 index c24bc89f320b..000000000000 --- a/arch/arm/mach-prima2/pm.c +++ /dev/null @@ -1,153 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * power management entry for CSR SiRFprimaII - * - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/kernel.h> -#include <linux/suspend.h> -#include <linux/slab.h> -#include <linux/export.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_device.h> -#include <linux/of_platform.h> -#include <linux/io.h> -#include <linux/rtc/sirfsoc_rtciobrg.h> -#include <asm/outercache.h> -#include <asm/suspend.h> -#include <asm/hardware/cache-l2x0.h> - -#include "pm.h" - -/* - * suspend asm codes will access these to make DRAM become self-refresh and - * system sleep - */ -u32 sirfsoc_pwrc_base; -void __iomem *sirfsoc_memc_base; - -static void sirfsoc_set_wakeup_source(void) -{ - u32 pwr_trigger_en_reg; - pwr_trigger_en_reg = sirfsoc_rtc_iobrg_readl(sirfsoc_pwrc_base + - SIRFSOC_PWRC_TRIGGER_EN); -#define X_ON_KEY_B (1 << 0) -#define RTC_ALARM0_B (1 << 2) -#define RTC_ALARM1_B (1 << 3) - sirfsoc_rtc_iobrg_writel(pwr_trigger_en_reg | X_ON_KEY_B | - RTC_ALARM0_B | RTC_ALARM1_B, - sirfsoc_pwrc_base + SIRFSOC_PWRC_TRIGGER_EN); -} - -static void sirfsoc_set_sleep_mode(u32 mode) -{ - u32 sleep_mode = sirfsoc_rtc_iobrg_readl(sirfsoc_pwrc_base + - SIRFSOC_PWRC_PDN_CTRL); - sleep_mode &= ~(SIRFSOC_SLEEP_MODE_MASK << 1); - sleep_mode |= mode << 1; - sirfsoc_rtc_iobrg_writel(sleep_mode, sirfsoc_pwrc_base + - SIRFSOC_PWRC_PDN_CTRL); -} - -static int sirfsoc_pre_suspend_power_off(void) -{ - u32 wakeup_entry = __pa_symbol(cpu_resume); - - sirfsoc_rtc_iobrg_writel(wakeup_entry, sirfsoc_pwrc_base + - SIRFSOC_PWRC_SCRATCH_PAD1); - - sirfsoc_set_wakeup_source(); - - sirfsoc_set_sleep_mode(SIRFSOC_DEEP_SLEEP_MODE); - - return 0; -} - -static int sirfsoc_pm_enter(suspend_state_t state) -{ - switch (state) { - case PM_SUSPEND_MEM: - sirfsoc_pre_suspend_power_off(); - - outer_disable(); - /* go zzz */ - cpu_suspend(0, sirfsoc_finish_suspend); - outer_resume(); - break; - default: - return -EINVAL; - } - return 0; -} - -static const struct platform_suspend_ops sirfsoc_pm_ops = { - .enter = sirfsoc_pm_enter, - .valid = suspend_valid_only_mem, -}; - -static const struct of_device_id pwrc_ids[] = { - { .compatible = "sirf,prima2-pwrc" }, - {} -}; - -static int __init sirfsoc_of_pwrc_init(void) -{ - struct device_node *np; - - np = of_find_matching_node(NULL, pwrc_ids); - if (!np) { - pr_err("unable to find compatible sirf pwrc node in dtb\n"); - return -ENOENT; - } - - /* - * pwrc behind rtciobrg is not located in memory space - * though the property is named reg. reg only means base - * offset for pwrc. then of_iomap is not suitable here. - */ - if (of_property_read_u32(np, "reg", &sirfsoc_pwrc_base)) - panic("unable to find base address of pwrc node in dtb\n"); - - of_node_put(np); - - return 0; -} - -static const struct of_device_id memc_ids[] = { - { .compatible = "sirf,prima2-memc" }, - {} -}; - -static int sirfsoc_memc_probe(struct platform_device *op) -{ - struct device_node *np = op->dev.of_node; - - sirfsoc_memc_base = of_iomap(np, 0); - if (!sirfsoc_memc_base) - panic("unable to map memc registers\n"); - - return 0; -} - -static struct platform_driver sirfsoc_memc_driver = { - .probe = sirfsoc_memc_probe, - .driver = { - .name = "sirfsoc-memc", - .of_match_table = memc_ids, - }, -}; - -static int __init sirfsoc_memc_init(void) -{ - return platform_driver_register(&sirfsoc_memc_driver); -} - -int __init sirfsoc_pm_init(void) -{ - sirfsoc_of_pwrc_init(); - sirfsoc_memc_init(); - suspend_set_ops(&sirfsoc_pm_ops); - return 0; -} diff --git a/arch/arm/mach-prima2/pm.h b/arch/arm/mach-prima2/pm.h deleted file mode 100644 index 0aff6cb876be..000000000000 --- a/arch/arm/mach-prima2/pm.h +++ /dev/null @@ -1,28 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * arch/arm/mach-prima2/pm.h - * - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#ifndef _MACH_PRIMA2_PM_H_ -#define _MACH_PRIMA2_PM_H_ - -#define SIRFSOC_PWR_SLEEPFORCE 0x01 - -#define SIRFSOC_SLEEP_MODE_MASK 0x3 -#define SIRFSOC_DEEP_SLEEP_MODE 0x1 - -#define SIRFSOC_PWRC_PDN_CTRL 0x0 -#define SIRFSOC_PWRC_PON_OFF 0x4 -#define SIRFSOC_PWRC_TRIGGER_EN 0x8 -#define SIRFSOC_PWRC_PIN_STATUS 0x14 -#define SIRFSOC_PWRC_SCRATCH_PAD1 0x18 -#define SIRFSOC_PWRC_SCRATCH_PAD2 0x1C - -#ifndef __ASSEMBLY__ -extern int sirfsoc_finish_suspend(unsigned long); -#endif - -#endif - diff --git a/arch/arm/mach-prima2/rstc.c b/arch/arm/mach-prima2/rstc.c deleted file mode 100644 index 9d56606ac87f..000000000000 --- a/arch/arm/mach-prima2/rstc.c +++ /dev/null @@ -1,107 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * reset controller for CSR SiRFprimaII - * - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/kernel.h> -#include <linux/mutex.h> -#include <linux/io.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/platform_device.h> -#include <linux/reboot.h> -#include <linux/reset-controller.h> - -#include <asm/system_misc.h> - -#define SIRFSOC_RSTBIT_NUM 64 - -static void __iomem *sirfsoc_rstc_base; -static DEFINE_MUTEX(rstc_lock); - -static int sirfsoc_reset_module(struct reset_controller_dev *rcdev, - unsigned long sw_reset_idx) -{ - u32 reset_bit = sw_reset_idx; - - if (reset_bit >= SIRFSOC_RSTBIT_NUM) - return -EINVAL; - - mutex_lock(&rstc_lock); - - /* - * Writing 1 to this bit resets corresponding block. - * Writing 0 to this bit de-asserts reset signal of the - * corresponding block. datasheet doesn't require explicit - * delay between the set and clear of reset bit. it could - * be shorter if tests pass. - */ - writel(readl(sirfsoc_rstc_base + - (reset_bit / 32) * 4) | (1 << reset_bit), - sirfsoc_rstc_base + (reset_bit / 32) * 4); - msleep(20); - writel(readl(sirfsoc_rstc_base + - (reset_bit / 32) * 4) & ~(1 << reset_bit), - sirfsoc_rstc_base + (reset_bit / 32) * 4); - - mutex_unlock(&rstc_lock); - - return 0; -} - -static struct reset_control_ops sirfsoc_rstc_ops = { - .reset = sirfsoc_reset_module, -}; - -static struct reset_controller_dev sirfsoc_reset_controller = { - .ops = &sirfsoc_rstc_ops, - .nr_resets = SIRFSOC_RSTBIT_NUM, -}; - -#define SIRFSOC_SYS_RST_BIT BIT(31) - -static void sirfsoc_restart(enum reboot_mode mode, const char *cmd) -{ - writel(SIRFSOC_SYS_RST_BIT, sirfsoc_rstc_base); -} - -static int sirfsoc_rstc_probe(struct platform_device *pdev) -{ - struct device_node *np = pdev->dev.of_node; - sirfsoc_rstc_base = of_iomap(np, 0); - if (!sirfsoc_rstc_base) { - dev_err(&pdev->dev, "unable to map rstc cpu registers\n"); - return -ENOMEM; - } - - sirfsoc_reset_controller.of_node = np; - arm_pm_restart = sirfsoc_restart; - - if (IS_ENABLED(CONFIG_RESET_CONTROLLER)) - reset_controller_register(&sirfsoc_reset_controller); - - return 0; -} - -static const struct of_device_id rstc_ids[] = { - { .compatible = "sirf,prima2-rstc" }, - {}, -}; - -static struct platform_driver sirfsoc_rstc_driver = { - .probe = sirfsoc_rstc_probe, - .driver = { - .name = "sirfsoc_rstc", - .of_match_table = rstc_ids, - }, -}; - -static int __init sirfsoc_rstc_init(void) -{ - return platform_driver_register(&sirfsoc_rstc_driver); -} -subsys_initcall(sirfsoc_rstc_init); diff --git a/arch/arm/mach-prima2/rtciobrg.c b/arch/arm/mach-prima2/rtciobrg.c deleted file mode 100644 index 97c0e333e3b9..000000000000 --- a/arch/arm/mach-prima2/rtciobrg.c +++ /dev/null @@ -1,179 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * RTC I/O Bridge interfaces for CSR SiRFprimaII/atlas7 - * ARM access the registers of SYSRTC, GPSRTC and PWRC through this module - * - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/io.h> -#include <linux/regmap.h> -#include <linux/of.h> -#include <linux/of_address.h> -#include <linux/of_device.h> -#include <linux/of_platform.h> - -#define SIRFSOC_CPUIOBRG_CTRL 0x00 -#define SIRFSOC_CPUIOBRG_WRBE 0x04 -#define SIRFSOC_CPUIOBRG_ADDR 0x08 -#define SIRFSOC_CPUIOBRG_DATA 0x0c - -/* - * suspend asm codes will access this address to make system deepsleep - * after DRAM becomes self-refresh - */ -void __iomem *sirfsoc_rtciobrg_base; -static DEFINE_SPINLOCK(rtciobrg_lock); - -/* - * symbols without lock are only used by suspend asm codes - * and these symbols are not exported too - */ -void sirfsoc_rtc_iobrg_wait_sync(void) -{ - while (readl_relaxed(sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL)) - cpu_relax(); -} - -void sirfsoc_rtc_iobrg_besyncing(void) -{ - unsigned long flags; - - spin_lock_irqsave(&rtciobrg_lock, flags); - - sirfsoc_rtc_iobrg_wait_sync(); - - spin_unlock_irqrestore(&rtciobrg_lock, flags); -} -EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_besyncing); - -u32 __sirfsoc_rtc_iobrg_readl(u32 addr) -{ - sirfsoc_rtc_iobrg_wait_sync(); - - writel_relaxed(0x00, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_WRBE); - writel_relaxed(addr, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_ADDR); - writel_relaxed(0x01, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL); - - sirfsoc_rtc_iobrg_wait_sync(); - - return readl_relaxed(sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_DATA); -} - -u32 sirfsoc_rtc_iobrg_readl(u32 addr) -{ - unsigned long flags, val; - - /* TODO: add hwspinlock to sync with M3 */ - spin_lock_irqsave(&rtciobrg_lock, flags); - - val = __sirfsoc_rtc_iobrg_readl(addr); - - spin_unlock_irqrestore(&rtciobrg_lock, flags); - - return val; -} -EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_readl); - -void sirfsoc_rtc_iobrg_pre_writel(u32 val, u32 addr) -{ - sirfsoc_rtc_iobrg_wait_sync(); - - writel_relaxed(0xf1, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_WRBE); - writel_relaxed(addr, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_ADDR); - - writel_relaxed(val, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_DATA); -} - -void sirfsoc_rtc_iobrg_writel(u32 val, u32 addr) -{ - unsigned long flags; - - /* TODO: add hwspinlock to sync with M3 */ - spin_lock_irqsave(&rtciobrg_lock, flags); - - sirfsoc_rtc_iobrg_pre_writel(val, addr); - - writel_relaxed(0x01, sirfsoc_rtciobrg_base + SIRFSOC_CPUIOBRG_CTRL); - - sirfsoc_rtc_iobrg_wait_sync(); - - spin_unlock_irqrestore(&rtciobrg_lock, flags); -} -EXPORT_SYMBOL_GPL(sirfsoc_rtc_iobrg_writel); - - -static int regmap_iobg_regwrite(void *context, unsigned int reg, - unsigned int val) -{ - sirfsoc_rtc_iobrg_writel(val, reg); - return 0; -} - -static int regmap_iobg_regread(void *context, unsigned int reg, - unsigned int *val) -{ - *val = (u32)sirfsoc_rtc_iobrg_readl(reg); - return 0; -} - -static struct regmap_bus regmap_iobg = { - .reg_write = regmap_iobg_regwrite, - .reg_read = regmap_iobg_regread, -}; - -/** - * devm_regmap_init_iobg(): Initialise managed register map - * - * @iobg: Device that will be interacted with - * @config: Configuration for register map - * - * The return value will be an ERR_PTR() on error or a valid pointer - * to a struct regmap. The regmap will be automatically freed by the - * device management code. - */ -struct regmap *devm_regmap_init_iobg(struct device *dev, - const struct regmap_config *config) -{ - const struct regmap_bus *bus = ®map_iobg; - - return devm_regmap_init(dev, bus, dev, config); -} -EXPORT_SYMBOL_GPL(devm_regmap_init_iobg); - -static const struct of_device_id rtciobrg_ids[] = { - { .compatible = "sirf,prima2-rtciobg" }, - {} -}; - -static int sirfsoc_rtciobrg_probe(struct platform_device *op) -{ - struct device_node *np = op->dev.of_node; - - sirfsoc_rtciobrg_base = of_iomap(np, 0); - if (!sirfsoc_rtciobrg_base) - panic("unable to map rtc iobrg registers\n"); - - return 0; -} - -static struct platform_driver sirfsoc_rtciobrg_driver = { - .probe = sirfsoc_rtciobrg_probe, - .driver = { - .name = "sirfsoc-rtciobrg", - .of_match_table = rtciobrg_ids, - }, -}; - -static int __init sirfsoc_rtciobrg_init(void) -{ - return platform_driver_register(&sirfsoc_rtciobrg_driver); -} -postcore_initcall(sirfsoc_rtciobrg_init); - -MODULE_AUTHOR("Zhiwu Song <zhiwu.song@csr.com>"); -MODULE_AUTHOR("Barry Song <baohua.song@csr.com>"); -MODULE_DESCRIPTION("CSR SiRFprimaII rtc io bridge"); -MODULE_LICENSE("GPL v2"); diff --git a/arch/arm/mach-prima2/sleep.S b/arch/arm/mach-prima2/sleep.S deleted file mode 100644 index d9bbc5ca39ef..000000000000 --- a/arch/arm/mach-prima2/sleep.S +++ /dev/null @@ -1,63 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * sleep mode for CSR SiRFprimaII - * - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. - */ - -#include <linux/linkage.h> -#include <asm/ptrace.h> -#include <asm/assembler.h> - -#include "pm.h" - -#define DENALI_CTL_22_OFF 0x58 -#define DENALI_CTL_112_OFF 0x1c0 - - .text - -ENTRY(sirfsoc_finish_suspend) - @ r5: mem controller - ldr r0, =sirfsoc_memc_base - ldr r5, [r0] - @ r6: pwrc base offset - ldr r0, =sirfsoc_pwrc_base - ldr r6, [r0] - @ r7: rtc iobrg controller - ldr r0, =sirfsoc_rtciobrg_base - ldr r7, [r0] - - @ Read the power control register and set the - @ sleep force bit. - add r0, r6, #SIRFSOC_PWRC_PDN_CTRL - bl __sirfsoc_rtc_iobrg_readl - orr r0,r0,#SIRFSOC_PWR_SLEEPFORCE - add r1, r6, #SIRFSOC_PWRC_PDN_CTRL - bl sirfsoc_rtc_iobrg_pre_writel - mov r1, #0x1 - - @ read the MEM ctl register and set the self - @ refresh bit - - ldr r2, [r5, #DENALI_CTL_22_OFF] - orr r2, r2, #0x1 - - @ Following code has to run from cache since - @ the RAM is going to self refresh mode - .align 5 - str r2, [r5, #DENALI_CTL_22_OFF] - -1: - ldr r4, [r5, #DENALI_CTL_112_OFF] - tst r4, #0x1 - bne 1b - - @ write SLEEPFORCE through rtc iobridge - - str r1, [r7] - @ wait rtc io bridge sync -1: - ldr r3, [r7] - tst r3, #0x01 - bne 1b - b . |