diff options
author | Olof Johansson <olof@lixom.net> | 2012-11-26 09:22:48 +0100 |
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committer | Olof Johansson <olof@lixom.net> | 2012-11-26 09:22:48 +0100 |
commit | 97c0bd411c188158d4a7e6d4bdee9382dc036be9 (patch) | |
tree | 3258f0bc1f1256c521edeeb02421ca14ee029ca0 | |
parent | Merge tag 'imx-soc-1' of git://git.pengutronix.de/git/imx/linux-2.6 into next... (diff) | |
parent | ARM: dts: Add pin controller node for Samsung EXYNOS5440 SoC (diff) | |
download | linux-97c0bd411c188158d4a7e6d4bdee9382dc036be9.tar.xz linux-97c0bd411c188158d4a7e6d4bdee9382dc036be9.zip |
Merge branch 'next/soc-exynos5440' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc
From Kukjin Kim:
This is adding support for exynos5440, including Quad ARM Cortex-A15
cores and its reference board SSDK5440.
Note, at this moment, just enabled minimal system part for initial kernel
boot and pinctrl driver.
* 'next/soc-exynos5440' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: dts: Add pin controller node for Samsung EXYNOS5440 SoC
pinctrl: exynos5440: add pinctrl driver for Samsung EXYNOS5440 SoC
ARM: dts: add initial dts file for EXYNOS5440, SSDK5440
ARM: EXYNOS: add support for EXYNOS5440 SoC
Add/add conflict in arch/arm/boot/dts/Makefile.
Signed-off-by: Olof Johansson <olof@lixom.net>
-rw-r--r-- | arch/arm/boot/dts/Makefile | 3 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos5440-ssdk5440.dts | 46 | ||||
-rw-r--r-- | arch/arm/boot/dts/exynos5440.dtsi | 159 | ||||
-rw-r--r-- | arch/arm/mach-exynos/Kconfig | 11 | ||||
-rw-r--r-- | arch/arm/mach-exynos/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-exynos/common.c | 68 | ||||
-rw-r--r-- | arch/arm/mach-exynos/include/mach/irqs.h | 5 | ||||
-rw-r--r-- | arch/arm/mach-exynos/include/mach/map.h | 5 | ||||
-rw-r--r-- | arch/arm/mach-exynos/include/mach/regs-pmu.h | 1 | ||||
-rw-r--r-- | arch/arm/mach-exynos/mach-exynos5-dt.c | 31 | ||||
-rw-r--r-- | arch/arm/mach-exynos/mct.c | 11 | ||||
-rw-r--r-- | arch/arm/mach-exynos/setup-i2c0.c | 2 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/cpu.h | 8 | ||||
-rw-r--r-- | drivers/pinctrl/Kconfig | 5 | ||||
-rw-r--r-- | drivers/pinctrl/Makefile | 1 | ||||
-rw-r--r-- | drivers/pinctrl/pinctrl-exynos5440.c | 919 | ||||
-rw-r--r-- | drivers/tty/serial/samsung.c | 3 |
17 files changed, 1258 insertions, 22 deletions
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index 8585bc0d5c0a..f872edff9c2c 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -24,7 +24,8 @@ dtb-$(CONFIG_ARCH_DOVE) += dove-cm-a510.dtb \ dtb-$(CONFIG_ARCH_EXYNOS) += exynos4210-origen.dtb \ exynos4210-smdkv310.dtb \ exynos4210-trats.dtb \ - exynos5250-smdk5250.dtb + exynos5250-smdk5250.dtb \ + exynos5440-ssdk5440.dtb dtb-$(CONFIG_ARCH_HIGHBANK) += highbank.dtb \ ecx-2000.dtb dtb-$(CONFIG_ARCH_INTEGRATOR) += integratorap.dtb \ diff --git a/arch/arm/boot/dts/exynos5440-ssdk5440.dts b/arch/arm/boot/dts/exynos5440-ssdk5440.dts new file mode 100644 index 000000000000..921c83cf694f --- /dev/null +++ b/arch/arm/boot/dts/exynos5440-ssdk5440.dts @@ -0,0 +1,46 @@ +/* + * SAMSUNG SSDK5440 board device tree source + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.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. +*/ + +/dts-v1/; +/include/ "exynos5440.dtsi" + +/ { + model = "SAMSUNG SSDK5440 board based on EXYNOS5440"; + compatible = "samsung,ssdk5440", "samsung,exynos5440"; + + memory { + reg = <0x80000000 0x80000000>; + }; + + chosen { + bootargs = "root=/dev/ram0 rw ramdisk=8192 initrd=0x81000000,8M console=ttySAC2,115200 init=/linuxrc"; + }; + + spi { + status = "disabled"; + }; + + i2c@F0000 { + status = "disabled"; + }; + + i2c@100000 { + status = "disabled"; + }; + + watchdog { + status = "disabled"; + }; + + rtc { + status = "disabled"; + }; +}; diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi new file mode 100644 index 000000000000..024269de8ee5 --- /dev/null +++ b/arch/arm/boot/dts/exynos5440.dtsi @@ -0,0 +1,159 @@ +/* + * SAMSUNG EXYNOS5440 SoC device tree source + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.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. +*/ + +/include/ "skeleton.dtsi" + +/ { + compatible = "samsung,exynos5440"; + + interrupt-parent = <&gic>; + + gic:interrupt-controller@2E0000 { + compatible = "arm,cortex-a15-gic"; + #interrupt-cells = <3>; + interrupt-controller; + reg = <0x2E1000 0x1000>, <0x2E2000 0x1000>; + }; + + cpus { + cpu@0 { + compatible = "arm,cortex-a15"; + timer { + compatible = "arm,armv7-timer"; + interrupts = <1 13 0xf08>; + clock-frequency = <1000000>; + }; + }; + cpu@1 { + compatible = "arm,cortex-a15"; + timer { + compatible = "arm,armv7-timer"; + interrupts = <1 14 0xf08>; + clock-frequency = <1000000>; + }; + }; + cpu@2 { + compatible = "arm,cortex-a15"; + timer { + compatible = "arm,armv7-timer"; + interrupts = <1 14 0xf08>; + clock-frequency = <1000000>; + }; + }; + cpu@3 { + compatible = "arm,cortex-a15"; + timer { + compatible = "arm,armv7-timer"; + interrupts = <1 14 0xf08>; + clock-frequency = <1000000>; + }; + }; + }; + + common { + compatible = "samsung,exynos5440"; + + }; + + serial@B0000 { + compatible = "samsung,exynos4210-uart"; + reg = <0xB0000 0x1000>; + interrupts = <0 2 0>; + }; + + serial@C0000 { + compatible = "samsung,exynos4210-uart"; + reg = <0xC0000 0x1000>; + interrupts = <0 3 0>; + }; + + spi { + compatible = "samsung,exynos4210-spi"; + reg = <0xD0000 0x1000>; + interrupts = <0 4 0>; + tx-dma-channel = <&pdma0 5>; /* preliminary */ + rx-dma-channel = <&pdma0 4>; /* preliminary */ + #address-cells = <1>; + #size-cells = <0>; + }; + + pinctrl { + compatible = "samsung,pinctrl-exynos5440"; + reg = <0xE0000 0x1000>; + interrupt-controller; + #interrupt-cells = <2>; + #gpio-cells = <2>; + + fan: fan { + samsung,exynos5440-pin-function = <1>; + }; + + hdd_led0: hdd_led0 { + samsung,exynos5440-pin-function = <2>; + }; + + hdd_led1: hdd_led1 { + samsung,exynos5440-pin-function = <3>; + }; + + uart1: uart1 { + samsung,exynos5440-pin-function = <4>; + }; + }; + + i2c@F0000 { + compatible = "samsung,s3c2440-i2c"; + reg = <0xF0000 0x1000>; + interrupts = <0 5 0>; + #address-cells = <1>; + #size-cells = <0>; + }; + + i2c@100000 { + compatible = "samsung,s3c2440-i2c"; + reg = <0x100000 0x1000>; + interrupts = <0 6 0>; + #address-cells = <1>; + #size-cells = <0>; + }; + + watchdog { + compatible = "samsung,s3c2410-wdt"; + reg = <0x110000 0x1000>; + interrupts = <0 1 0>; + }; + + amba { + #address-cells = <1>; + #size-cells = <1>; + compatible = "arm,amba-bus"; + interrupt-parent = <&gic>; + ranges; + + pdma0: pdma@121A0000 { + compatible = "arm,pl330", "arm,primecell"; + reg = <0x120000 0x1000>; + interrupts = <0 34 0>; + }; + + pdma1: pdma@121B0000 { + compatible = "arm,pl330", "arm,primecell"; + reg = <0x121000 0x1000>; + interrupts = <0 35 0>; + }; + }; + + rtc { + compatible = "samsung,s3c6410-rtc"; + reg = <0x130000 0x1000>; + interrupts = <0 16 0>, <0 17 0>; + }; +}; diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index da55107033dd..ed17e353956e 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -67,6 +67,15 @@ config SOC_EXYNOS5250 help Enable EXYNOS5250 SoC support +config SOC_EXYNOS5440 + bool "SAMSUNG EXYNOS5440" + default y + depends on ARCH_EXYNOS5 + select ARM_ARCH_TIMER + select AUTO_ZRELADDR + help + Enable EXYNOS5440 SoC support + config EXYNOS4_MCT bool default y @@ -417,9 +426,9 @@ config MACH_EXYNOS4_DT config MACH_EXYNOS5_DT bool "SAMSUNG EXYNOS5 Machine using device tree" + default y depends on ARCH_EXYNOS5 select ARM_AMBA - select SOC_EXYNOS5250 select USE_OF help Machine support for Samsung EXYNOS5 machine with device tree enabled. diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile index 9b58024f7d43..1a076df02bd8 100644 --- a/arch/arm/mach-exynos/Makefile +++ b/arch/arm/mach-exynos/Makefile @@ -14,9 +14,9 @@ obj- := obj-$(CONFIG_ARCH_EXYNOS) += common.o obj-$(CONFIG_ARCH_EXYNOS4) += clock-exynos4.o -obj-$(CONFIG_ARCH_EXYNOS5) += clock-exynos5.o obj-$(CONFIG_CPU_EXYNOS4210) += clock-exynos4210.o obj-$(CONFIG_SOC_EXYNOS4212) += clock-exynos4212.o +obj-$(CONFIG_SOC_EXYNOS5250) += clock-exynos5.o obj-$(CONFIG_PM) += pm.o obj-$(CONFIG_PM_GENERIC_DOMAINS) += pm_domains.o diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index 1947be8e5f5b..94f1dedc0617 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -58,9 +58,11 @@ static const char name_exynos4210[] = "EXYNOS4210"; static const char name_exynos4212[] = "EXYNOS4212"; static const char name_exynos4412[] = "EXYNOS4412"; static const char name_exynos5250[] = "EXYNOS5250"; +static const char name_exynos5440[] = "EXYNOS5440"; static void exynos4_map_io(void); static void exynos5_map_io(void); +static void exynos5440_map_io(void); static void exynos4_init_clocks(int xtal); static void exynos5_init_clocks(int xtal); static void exynos_init_uarts(struct s3c2410_uartcfg *cfg, int no); @@ -99,6 +101,12 @@ static struct cpu_table cpu_ids[] __initdata = { .init_uarts = exynos_init_uarts, .init = exynos_init, .name = name_exynos5250, + }, { + .idcode = EXYNOS5440_SOC_ID, + .idmask = EXYNOS5_SOC_MASK, + .map_io = exynos5440_map_io, + .init = exynos_init, + .name = name_exynos5440, }, }; @@ -113,6 +121,15 @@ static struct map_desc exynos_iodesc[] __initdata = { }, }; +static struct map_desc exynos5440_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_CHIPID, + .pfn = __phys_to_pfn(EXYNOS5440_PA_CHIPID), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + static struct map_desc exynos4_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -279,6 +296,15 @@ static struct map_desc exynos5_iodesc[] __initdata = { }, }; +static struct map_desc exynos5440_iodesc0[] __initdata = { + { + .virtual = (unsigned long)S3C_VA_UART, + .pfn = __phys_to_pfn(EXYNOS5440_PA_UART0), + .length = SZ_512K, + .type = MT_DEVICE, + }, +}; + void exynos4_restart(char mode, const char *cmd) { __raw_writel(0x1, S5P_SWRESET); @@ -286,11 +312,29 @@ void exynos4_restart(char mode, const char *cmd) void exynos5_restart(char mode, const char *cmd) { - __raw_writel(0x1, EXYNOS_SWRESET); + u32 val; + void __iomem *addr; + + if (of_machine_is_compatible("samsung,exynos5250")) { + val = 0x1; + addr = EXYNOS_SWRESET; + } else if (of_machine_is_compatible("samsung,exynos5440")) { + val = (0x10 << 20) | (0x1 << 16); + addr = EXYNOS5440_SWRESET; + } else { + pr_err("%s: cannot support non-DT\n", __func__); + return; + } + + __raw_writel(val, addr); } void __init exynos_init_late(void) { + if (of_machine_is_compatible("samsung,exynos5440")) + /* to be supported later */ + return; + exynos_pm_late_initcall(); } @@ -303,7 +347,11 @@ void __init exynos_init_late(void) void __init exynos_init_io(struct map_desc *mach_desc, int size) { /* initialize the io descriptors we need for initialization */ - iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc)); + if (of_machine_is_compatible("samsung,exynos5440")) + iotable_init(exynos5440_iodesc, ARRAY_SIZE(exynos5440_iodesc)); + else + iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc)); + if (mach_desc) iotable_init(mach_desc, size); @@ -389,6 +437,11 @@ static void __init exynos4_init_clocks(int xtal) exynos4_setup_clocks(); } +static void __init exynos5440_map_io(void) +{ + iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0)); +} + static void __init exynos5_init_clocks(int xtal) { printk(KERN_DEBUG "%s: initializing clocks\n", __func__); @@ -604,8 +657,9 @@ int __init combiner_of_init(struct device_node *np, struct device_node *parent) return 0; } -static const struct of_device_id exynos4_dt_irq_match[] = { +static const struct of_device_id exynos_dt_irq_match[] = { { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, + { .compatible = "arm,cortex-a15-gic", .data = gic_of_init, }, { .compatible = "samsung,exynos4210-combiner", .data = combiner_of_init, }, {}, @@ -622,7 +676,7 @@ void __init exynos4_init_irq(void) gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset, NULL); #ifdef CONFIG_OF else - of_irq_init(exynos4_dt_irq_match); + of_irq_init(exynos_dt_irq_match); #endif if (!of_have_populated_dt()) @@ -639,7 +693,7 @@ void __init exynos4_init_irq(void) void __init exynos5_init_irq(void) { #ifdef CONFIG_OF - of_irq_init(exynos4_dt_irq_match); + of_irq_init(exynos_dt_irq_match); #endif /* * The parameters of s5p_init_irq() are for VIC init. @@ -669,7 +723,7 @@ static int __init exynos4_l2x0_cache_init(void) { int ret; - if (soc_is_exynos5250()) + if (soc_is_exynos5250() || soc_is_exynos5440()) return 0; ret = l2x0_of_init(L2_AUX_VAL, L2_AUX_MASK); @@ -1010,6 +1064,8 @@ static int __init exynos_init_irq_eint(void) } } #endif + if (soc_is_exynos5440()) + return 0; if (soc_is_exynos5250()) exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K); diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h index 35bced6f9092..f43a96ca6f98 100644 --- a/arch/arm/mach-exynos/include/mach/irqs.h +++ b/arch/arm/mach-exynos/include/mach/irqs.h @@ -333,6 +333,11 @@ #define EXYNOS5_IRQ_FIMC_LITE1 IRQ_SPI(126) #define EXYNOS5_IRQ_RP_TIMER IRQ_SPI(127) +/* EXYNOS5440 */ + +#define EXYNOS5440_IRQ_UART0 IRQ_SPI(2) +#define EXYNOS5440_IRQ_UART1 IRQ_SPI(3) + #define EXYNOS5_IRQ_PMU COMBINER_IRQ(1, 2) #define EXYNOS5_IRQ_SYSMMU_GSC0_0 COMBINER_IRQ(2, 0) diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h index 8480849affb9..aa3760e1d668 100644 --- a/arch/arm/mach-exynos/include/mach/map.h +++ b/arch/arm/mach-exynos/include/mach/map.h @@ -53,6 +53,7 @@ #define EXYNOS4_PA_ONENAND_DMA 0x0C600000 #define EXYNOS_PA_CHIPID 0x10000000 +#define EXYNOS5440_PA_CHIPID 0x00160000 #define EXYNOS4_PA_SYSCON 0x10010000 #define EXYNOS5_PA_SYSCON 0x10050100 @@ -281,6 +282,10 @@ #define EXYNOS5_PA_UART3 0x12C30000 #define EXYNOS5_SZ_UART SZ_256 +#define EXYNOS5440_PA_UART0 0x000B0000 +#define EXYNOS5440_PA_UART1 0x000C0000 +#define EXYNOS5440_SZ_UART SZ_256 + #define S3C_VA_UARTx(x) (S3C_VA_UART + ((x) * S3C_UART_OFFSET)) #endif /* __ASM_ARCH_MAP_H */ diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h index d4e392b811a3..c0b74f388178 100644 --- a/arch/arm/mach-exynos/include/mach/regs-pmu.h +++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h @@ -31,6 +31,7 @@ #define S5P_SWRESET S5P_PMUREG(0x0400) #define EXYNOS_SWRESET S5P_PMUREG(0x0400) +#define EXYNOS5440_SWRESET S5P_PMUREG(0x00C4) #define S5P_WAKEUP_STAT S5P_PMUREG(0x0600) #define S5P_EINT_WAKEUP_MASK S5P_PMUREG(0x0604) diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c index db1cd8eacf28..4db2ee1238b4 100644 --- a/arch/arm/mach-exynos/mach-exynos5-dt.c +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c @@ -75,20 +75,33 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = { {}, }; -static void __init exynos5250_dt_map_io(void) +static const struct of_dev_auxdata exynos5440_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5440_PA_UART0, + "exynos4210-uart.0", NULL), + {}, +}; + +static void __init exynos5_dt_map_io(void) { exynos_init_io(NULL, 0); - s3c24xx_init_clocks(24000000); + + if (of_machine_is_compatible("samsung,exynos5250")) + s3c24xx_init_clocks(24000000); } -static void __init exynos5250_dt_machine_init(void) +static void __init exynos5_dt_machine_init(void) { - of_platform_populate(NULL, of_default_bus_match_table, - exynos5250_auxdata_lookup, NULL); + if (of_machine_is_compatible("samsung,exynos5250")) + of_platform_populate(NULL, of_default_bus_match_table, + exynos5250_auxdata_lookup, NULL); + else if (of_machine_is_compatible("samsung,exynos5440")) + of_platform_populate(NULL, of_default_bus_match_table, + exynos5440_auxdata_lookup, NULL); } -static char const *exynos5250_dt_compat[] __initdata = { +static char const *exynos5_dt_compat[] __initdata = { "samsung,exynos5250", + "samsung,exynos5440", NULL }; @@ -96,11 +109,11 @@ DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)") /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */ .init_irq = exynos5_init_irq, .smp = smp_ops(exynos_smp_ops), - .map_io = exynos5250_dt_map_io, + .map_io = exynos5_dt_map_io, .handle_irq = gic_handle_irq, - .init_machine = exynos5250_dt_machine_init, + .init_machine = exynos5_dt_machine_init, .init_late = exynos_init_late, .timer = &exynos4_timer, - .dt_compat = exynos5250_dt_compat, + .dt_compat = exynos5_dt_compat, .restart = exynos5_restart, MACHINE_END diff --git a/arch/arm/mach-exynos/mct.c b/arch/arm/mach-exynos/mct.c index b601fb8a408b..57668eb68e75 100644 --- a/arch/arm/mach-exynos/mct.c +++ b/arch/arm/mach-exynos/mct.c @@ -19,7 +19,9 @@ #include <linux/platform_device.h> #include <linux/delay.h> #include <linux/percpu.h> +#include <linux/of.h> +#include <asm/arch_timer.h> #include <asm/hardware/gic.h> #include <asm/localtimer.h> @@ -476,8 +478,13 @@ static void __init exynos4_timer_resources(void) #endif /* CONFIG_LOCAL_TIMERS */ } -static void __init exynos4_timer_init(void) +static void __init exynos_timer_init(void) { + if (soc_is_exynos5440()) { + arch_timer_of_register(); + return; + } + if ((soc_is_exynos4210()) || (soc_is_exynos5250())) mct_int_type = MCT_INT_SPI; else @@ -489,5 +496,5 @@ static void __init exynos4_timer_init(void) } struct sys_timer exynos4_timer = { - .init = exynos4_timer_init, + .init = exynos_timer_init, }; diff --git a/arch/arm/mach-exynos/setup-i2c0.c b/arch/arm/mach-exynos/setup-i2c0.c index 5700f23629f7..e2d9dfbf102c 100644 --- a/arch/arm/mach-exynos/setup-i2c0.c +++ b/arch/arm/mach-exynos/setup-i2c0.c @@ -20,7 +20,7 @@ struct platform_device; /* don't need the contents */ void s3c_i2c0_cfg_gpio(struct platform_device *dev) { - if (soc_is_exynos5250()) + if (soc_is_exynos5250() || soc_is_exynos5440()) /* will be implemented with gpio function */ return; diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h index ace4451b7651..e0072ce8d6e9 100644 --- a/arch/arm/plat-samsung/include/plat/cpu.h +++ b/arch/arm/plat-samsung/include/plat/cpu.h @@ -43,6 +43,7 @@ extern unsigned long samsung_cpu_id; #define EXYNOS4_CPU_MASK 0xFFFE0000 #define EXYNOS5250_SOC_ID 0x43520000 +#define EXYNOS5440_SOC_ID 0x54400000 #define EXYNOS5_SOC_MASK 0xFFFFF000 #define IS_SAMSUNG_CPU(name, id, mask) \ @@ -62,6 +63,7 @@ IS_SAMSUNG_CPU(exynos4210, EXYNOS4210_CPU_ID, EXYNOS4_CPU_MASK) IS_SAMSUNG_CPU(exynos4212, EXYNOS4212_CPU_ID, EXYNOS4_CPU_MASK) IS_SAMSUNG_CPU(exynos4412, EXYNOS4412_CPU_ID, EXYNOS4_CPU_MASK) IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS5_SOC_MASK) +IS_SAMSUNG_CPU(exynos5440, EXYNOS5440_SOC_ID, EXYNOS5_SOC_MASK) #if defined(CONFIG_CPU_S3C2410) || defined(CONFIG_CPU_S3C2412) || \ defined(CONFIG_CPU_S3C2416) || defined(CONFIG_CPU_S3C2440) || \ @@ -130,6 +132,12 @@ IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS5_SOC_MASK) # define soc_is_exynos5250() 0 #endif +#if defined(CONFIG_SOC_EXYNOS5440) +# define soc_is_exynos5440() is_samsung_exynos5440() +#else +# define soc_is_exynos5440() 0 +#endif + #define IODESC_ENT(x) { (unsigned long)S3C24XX_VA_##x, __phys_to_pfn(S3C24XX_PA_##x), S3C24XX_SZ_##x, MT_DEVICE } #ifndef KHZ diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index d96caefd914a..dd08b490d091 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -188,6 +188,11 @@ config PINCTRL_EXYNOS4 depends on OF && GPIOLIB select PINCTRL_SAMSUNG +config PINCTRL_EXYNOS5440 + bool "Samsung EXYNOS5440 SoC pinctrl driver" + select PINMUX + select PINCONF + config PINCTRL_MVEBU bool depends on ARCH_MVEBU diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index f395ba5cec25..476928bb97c2 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o obj-$(CONFIG_PINCTRL_SAMSUNG) += pinctrl-samsung.o obj-$(CONFIG_PINCTRL_EXYNOS4) += pinctrl-exynos.o +obj-$(CONFIG_PINCTRL_EXYNOS5440) += pinctrl-exynos5440.o obj-$(CONFIG_PINCTRL_MVEBU) += pinctrl-mvebu.o obj-$(CONFIG_PINCTRL_DOVE) += pinctrl-dove.o obj-$(CONFIG_PINCTRL_KIRKWOOD) += pinctrl-kirkwood.o diff --git a/drivers/pinctrl/pinctrl-exynos5440.c b/drivers/pinctrl/pinctrl-exynos5440.c new file mode 100644 index 000000000000..b8635f634e91 --- /dev/null +++ b/drivers/pinctrl/pinctrl-exynos5440.c @@ -0,0 +1,919 @@ +/* + * pin-controller/pin-mux/pin-config/gpio-driver for Samsung's EXYNOS5440 SoC. + * + * Copyright (c) 2012 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * 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. + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/gpio.h> +#include <linux/device.h> +#include <linux/pinctrl/pinctrl.h> +#include <linux/pinctrl/pinmux.h> +#include <linux/pinctrl/pinconf.h> +#include "core.h" + +/* EXYNOS5440 GPIO and Pinctrl register offsets */ +#define GPIO_MUX 0x00 +#define GPIO_IE 0x04 +#define GPIO_INT 0x08 +#define GPIO_TYPE 0x0C +#define GPIO_VAL 0x10 +#define GPIO_OE 0x14 +#define GPIO_IN 0x18 +#define GPIO_PE 0x1C +#define GPIO_PS 0x20 +#define GPIO_SR 0x24 +#define GPIO_DS0 0x28 +#define GPIO_DS1 0x2C + +#define EXYNOS5440_MAX_PINS 23 +#define PIN_NAME_LENGTH 10 + +#define GROUP_SUFFIX "-grp" +#define GSUFFIX_LEN sizeof(GROUP_SUFFIX) +#define FUNCTION_SUFFIX "-mux" +#define FSUFFIX_LEN sizeof(FUNCTION_SUFFIX) + +/* + * pin configuration type and its value are packed together into a 16-bits. + * The upper 8-bits represent the configuration type and the lower 8-bits + * hold the value of the configuration type. + */ +#define PINCFG_TYPE_MASK 0xFF +#define PINCFG_VALUE_SHIFT 8 +#define PINCFG_VALUE_MASK (0xFF << PINCFG_VALUE_SHIFT) +#define PINCFG_PACK(type, value) (((value) << PINCFG_VALUE_SHIFT) | type) +#define PINCFG_UNPACK_TYPE(cfg) ((cfg) & PINCFG_TYPE_MASK) +#define PINCFG_UNPACK_VALUE(cfg) (((cfg) & PINCFG_VALUE_MASK) >> \ + PINCFG_VALUE_SHIFT) + +/** + * enum pincfg_type - possible pin configuration types supported. + * @PINCFG_TYPE_PUD: Pull up/down configuration. + * @PINCFG_TYPE_DRV: Drive strength configuration. + * @PINCFG_TYPE_SKEW_RATE: Skew rate configuration. + * @PINCFG_TYPE_INPUT_TYPE: Pin input type configuration. + */ +enum pincfg_type { + PINCFG_TYPE_PUD, + PINCFG_TYPE_DRV, + PINCFG_TYPE_SKEW_RATE, + PINCFG_TYPE_INPUT_TYPE +}; + +/** + * struct exynos5440_pin_group: represent group of pins for pincfg setting. + * @name: name of the pin group, used to lookup the group. + * @pins: the pins included in this group. + * @num_pins: number of pins included in this group. + */ +struct exynos5440_pin_group { + const char *name; + const unsigned int *pins; + u8 num_pins; +}; + +/** + * struct exynos5440_pmx_func: represent a pin function. + * @name: name of the pin function, used to lookup the function. + * @groups: one or more names of pin groups that provide this function. + * @num_groups: number of groups included in @groups. + * @function: the function number to be programmed when selected. + */ +struct exynos5440_pmx_func { + const char *name; + const char **groups; + u8 num_groups; + unsigned long function; +}; + +/** + * struct exynos5440_pinctrl_priv_data: driver's private runtime data. + * @reg_base: ioremapped based address of the register space. + * @gc: gpio chip registered with gpiolib. + * @pin_groups: list of pin groups parsed from device tree. + * @nr_groups: number of pin groups available. + * @pmx_functions: list of pin functions parsed from device tree. + * @nr_functions: number of pin functions available. + */ +struct exynos5440_pinctrl_priv_data { + void __iomem *reg_base; + struct gpio_chip *gc; + + const struct exynos5440_pin_group *pin_groups; + unsigned int nr_groups; + const struct exynos5440_pmx_func *pmx_functions; + unsigned int nr_functions; +}; + +/* list of all possible config options supported */ +struct pin_config { + char *prop_cfg; + unsigned int cfg_type; +} pcfgs[] = { + { "samsung,exynos5440-pin-pud", PINCFG_TYPE_PUD }, + { "samsung,exynos5440-pin-drv", PINCFG_TYPE_DRV }, + { "samsung,exynos5440-pin-skew-rate", PINCFG_TYPE_SKEW_RATE }, + { "samsung,exynos5440-pin-input-type", PINCFG_TYPE_INPUT_TYPE }, +}; + +/* check if the selector is a valid pin group selector */ +static int exynos5440_get_group_count(struct pinctrl_dev *pctldev) +{ + struct exynos5440_pinctrl_priv_data *priv; + + priv = pinctrl_dev_get_drvdata(pctldev); + return priv->nr_groups; +} + +/* return the name of the group selected by the group selector */ +static const char *exynos5440_get_group_name(struct pinctrl_dev *pctldev, + unsigned selector) +{ + struct exynos5440_pinctrl_priv_data *priv; + + priv = pinctrl_dev_get_drvdata(pctldev); + return priv->pin_groups[selector].name; +} + +/* return the pin numbers associated with the specified group */ +static int exynos5440_get_group_pins(struct pinctrl_dev *pctldev, + unsigned selector, const unsigned **pins, unsigned *num_pins) +{ + struct exynos5440_pinctrl_priv_data *priv; + + priv = pinctrl_dev_get_drvdata(pctldev); + *pins = priv->pin_groups[selector].pins; + *num_pins = priv->pin_groups[selector].num_pins; + return 0; +} + +/* create pinctrl_map entries by parsing device tree nodes */ +static int exynos5440_dt_node_to_map(struct pinctrl_dev *pctldev, + struct device_node *np, struct pinctrl_map **maps, + unsigned *nmaps) +{ + struct device *dev = pctldev->dev; + struct pinctrl_map *map; + unsigned long *cfg = NULL; + char *gname, *fname; + int cfg_cnt = 0, map_cnt = 0, idx = 0; + + /* count the number of config options specfied in the node */ + for (idx = 0; idx < ARRAY_SIZE(pcfgs); idx++) + if (of_find_property(np, pcfgs[idx].prop_cfg, NULL)) + cfg_cnt++; + + /* + * Find out the number of map entries to create. All the config options + * can be accomadated into a single config map entry. + */ + if (cfg_cnt) + map_cnt = 1; + if (of_find_property(np, "samsung,exynos5440-pin-function", NULL)) + map_cnt++; + if (!map_cnt) { + dev_err(dev, "node %s does not have either config or function " + "configurations\n", np->name); + return -EINVAL; + } + + /* Allocate memory for pin-map entries */ + map = kzalloc(sizeof(*map) * map_cnt, GFP_KERNEL); + if (!map) { + dev_err(dev, "could not alloc memory for pin-maps\n"); + return -ENOMEM; + } + *nmaps = 0; + + /* + * Allocate memory for pin group name. The pin group name is derived + * from the node name from which these map entries are be created. + */ + gname = kzalloc(strlen(np->name) + GSUFFIX_LEN, GFP_KERNEL); + if (!gname) { + dev_err(dev, "failed to alloc memory for group name\n"); + goto free_map; + } + sprintf(gname, "%s%s", np->name, GROUP_SUFFIX); + + /* + * don't have config options? then skip over to creating function + * map entries. + */ + if (!cfg_cnt) + goto skip_cfgs; + + /* Allocate memory for config entries */ + cfg = kzalloc(sizeof(*cfg) * cfg_cnt, GFP_KERNEL); + if (!cfg) { + dev_err(dev, "failed to alloc memory for configs\n"); + goto free_gname; + } + + /* Prepare a list of config settings */ + for (idx = 0, cfg_cnt = 0; idx < ARRAY_SIZE(pcfgs); idx++) { + u32 value; + if (!of_property_read_u32(np, pcfgs[idx].prop_cfg, &value)) + cfg[cfg_cnt++] = + PINCFG_PACK(pcfgs[idx].cfg_type, value); + } + + /* create the config map entry */ + map[*nmaps].data.configs.group_or_pin = gname; + map[*nmaps].data.configs.configs = cfg; + map[*nmaps].data.configs.num_configs = cfg_cnt; + map[*nmaps].type = PIN_MAP_TYPE_CONFIGS_GROUP; + *nmaps += 1; + +skip_cfgs: + /* create the function map entry */ + if (of_find_property(np, "samsung,exynos5440-pin-function", NULL)) { + fname = kzalloc(strlen(np->name) + FSUFFIX_LEN, GFP_KERNEL); + if (!fname) { + dev_err(dev, "failed to alloc memory for func name\n"); + goto free_cfg; + } + sprintf(fname, "%s%s", np->name, FUNCTION_SUFFIX); + + map[*nmaps].data.mux.group = gname; + map[*nmaps].data.mux.function = fname; + map[*nmaps].type = PIN_MAP_TYPE_MUX_GROUP; + *nmaps += 1; + } + + *maps = map; + return 0; + +free_cfg: + kfree(cfg); +free_gname: + kfree(gname); +free_map: + kfree(map); + return -ENOMEM; +} + +/* free the memory allocated to hold the pin-map table */ +static void exynos5440_dt_free_map(struct pinctrl_dev *pctldev, + struct pinctrl_map *map, unsigned num_maps) +{ + int idx; + + for (idx = 0; idx < num_maps; idx++) { + if (map[idx].type == PIN_MAP_TYPE_MUX_GROUP) { + kfree(map[idx].data.mux.function); + if (!idx) + kfree(map[idx].data.mux.group); + } else if (map->type == PIN_MAP_TYPE_CONFIGS_GROUP) { + kfree(map[idx].data.configs.configs); + if (!idx) + kfree(map[idx].data.configs.group_or_pin); + } + }; + + kfree(map); +} + +/* list of pinctrl callbacks for the pinctrl core */ +static struct pinctrl_ops exynos5440_pctrl_ops = { + .get_groups_count = exynos5440_get_group_count, + .get_group_name = exynos5440_get_group_name, + .get_group_pins = exynos5440_get_group_pins, + .dt_node_to_map = exynos5440_dt_node_to_map, + .dt_free_map = exynos5440_dt_free_map, +}; + +/* check if the selector is a valid pin function selector */ +static int exynos5440_get_functions_count(struct pinctrl_dev *pctldev) +{ + struct exynos5440_pinctrl_priv_data *priv; + + priv = pinctrl_dev_get_drvdata(pctldev); + return priv->nr_functions; +} + +/* return the name of the pin function specified */ +static const char *exynos5440_pinmux_get_fname(struct pinctrl_dev *pctldev, + unsigned selector) +{ + struct exynos5440_pinctrl_priv_data *priv; + + priv = pinctrl_dev_get_drvdata(pctldev); + return priv->pmx_functions[selector].name; +} + +/* return the groups associated for the specified function selector */ +static int exynos5440_pinmux_get_groups(struct pinctrl_dev *pctldev, + unsigned selector, const char * const **groups, + unsigned * const num_groups) +{ + struct exynos5440_pinctrl_priv_data *priv; + + priv = pinctrl_dev_get_drvdata(pctldev); + *groups = priv->pmx_functions[selector].groups; + *num_groups = priv->pmx_functions[selector].num_groups; + return 0; +} + +/* enable or disable a pinmux function */ +static void exynos5440_pinmux_setup(struct pinctrl_dev *pctldev, unsigned selector, + unsigned group, bool enable) +{ + struct exynos5440_pinctrl_priv_data *priv; + void __iomem *base; + u32 function; + u32 data; + + priv = pinctrl_dev_get_drvdata(pctldev); + base = priv->reg_base; + function = priv->pmx_functions[selector].function; + + data = readl(base + GPIO_MUX); + if (enable) + data |= (1 << function); + else + data &= ~(1 << function); + writel(data, base + GPIO_MUX); +} + +/* enable a specified pinmux by writing to registers */ +static int exynos5440_pinmux_enable(struct pinctrl_dev *pctldev, unsigned selector, + unsigned group) +{ + exynos5440_pinmux_setup(pctldev, selector, group, true); + return 0; +} + +/* disable a specified pinmux by writing to registers */ +static void exynos5440_pinmux_disable(struct pinctrl_dev *pctldev, + unsigned selector, unsigned group) +{ + exynos5440_pinmux_setup(pctldev, selector, group, false); +} + +/* + * The calls to gpio_direction_output() and gpio_direction_input() + * leads to this function call (via the pinctrl_gpio_direction_{input|output}() + * function called from the gpiolib interface). + */ +static int exynos5440_pinmux_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, unsigned offset, bool input) +{ + return 0; +} + +/* list of pinmux callbacks for the pinmux vertical in pinctrl core */ +static struct pinmux_ops exynos5440_pinmux_ops = { + .get_functions_count = exynos5440_get_functions_count, + .get_function_name = exynos5440_pinmux_get_fname, + .get_function_groups = exynos5440_pinmux_get_groups, + .enable = exynos5440_pinmux_enable, + .disable = exynos5440_pinmux_disable, + .gpio_set_direction = exynos5440_pinmux_gpio_set_direction, +}; + +/* set the pin config settings for a specified pin */ +static int exynos5440_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, + unsigned long config) +{ + struct exynos5440_pinctrl_priv_data *priv; + void __iomem *base; + enum pincfg_type cfg_type = PINCFG_UNPACK_TYPE(config); + u32 cfg_value = PINCFG_UNPACK_VALUE(config); + u32 data; + + priv = pinctrl_dev_get_drvdata(pctldev); + base = priv->reg_base; + + switch (cfg_type) { + case PINCFG_TYPE_PUD: + /* first set pull enable/disable bit */ + data = readl(base + GPIO_PE); + data &= ~(1 << pin); + if (cfg_value) + data |= (1 << pin); + writel(data, base + GPIO_PE); + + /* then set pull up/down bit */ + data = readl(base + GPIO_PS); + data &= ~(1 << pin); + if (cfg_value == 2) + data |= (1 << pin); + writel(data, base + GPIO_PS); + break; + + case PINCFG_TYPE_DRV: + /* set the first bit of the drive strength */ + data = readl(base + GPIO_DS0); + data &= ~(1 << pin); + data |= ((cfg_value & 1) << pin); + writel(data, base + GPIO_DS0); + cfg_value >>= 1; + + /* set the second bit of the driver strength */ + data = readl(base + GPIO_DS1); + data &= ~(1 << pin); + data |= ((cfg_value & 1) << pin); + writel(data, base + GPIO_DS1); + break; + case PINCFG_TYPE_SKEW_RATE: + data = readl(base + GPIO_SR); + data &= ~(1 << pin); + data |= ((cfg_value & 1) << pin); + writel(data, base + GPIO_SR); + break; + case PINCFG_TYPE_INPUT_TYPE: + data = readl(base + GPIO_TYPE); + data &= ~(1 << pin); + data |= ((cfg_value & 1) << pin); + writel(data, base + GPIO_TYPE); + break; + default: + WARN_ON(1); + return -EINVAL; + } + + return 0; +} + +/* get the pin config settings for a specified pin */ +static int exynos5440_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, + unsigned long *config) +{ + struct exynos5440_pinctrl_priv_data *priv; + void __iomem *base; + enum pincfg_type cfg_type = PINCFG_UNPACK_TYPE(*config); + u32 data; + + priv = pinctrl_dev_get_drvdata(pctldev); + base = priv->reg_base; + + switch (cfg_type) { + case PINCFG_TYPE_PUD: + data = readl(base + GPIO_PE); + data = (data >> pin) & 1; + if (!data) + *config = 0; + else + *config = ((readl(base + GPIO_PS) >> pin) & 1) + 1; + break; + case PINCFG_TYPE_DRV: + data = readl(base + GPIO_DS0); + data = (data >> pin) & 1; + *config = data; + data = readl(base + GPIO_DS1); + data = (data >> pin) & 1; + *config |= (data << 1); + break; + case PINCFG_TYPE_SKEW_RATE: + data = readl(base + GPIO_SR); + *config = (data >> pin) & 1; + break; + case PINCFG_TYPE_INPUT_TYPE: + data = readl(base + GPIO_TYPE); + *config = (data >> pin) & 1; + break; + default: + WARN_ON(1); + return -EINVAL; + } + + return 0; +} + +/* set the pin config settings for a specified pin group */ +static int exynos5440_pinconf_group_set(struct pinctrl_dev *pctldev, + unsigned group, unsigned long config) +{ + struct exynos5440_pinctrl_priv_data *priv; + const unsigned int *pins; + unsigned int cnt; + + priv = pinctrl_dev_get_drvdata(pctldev); + pins = priv->pin_groups[group].pins; + + for (cnt = 0; cnt < priv->pin_groups[group].num_pins; cnt++) + exynos5440_pinconf_set(pctldev, pins[cnt], config); + + return 0; +} + +/* get the pin config settings for a specified pin group */ +static int exynos5440_pinconf_group_get(struct pinctrl_dev *pctldev, + unsigned int group, unsigned long *config) +{ + struct exynos5440_pinctrl_priv_data *priv; + const unsigned int *pins; + + priv = pinctrl_dev_get_drvdata(pctldev); + pins = priv->pin_groups[group].pins; + exynos5440_pinconf_get(pctldev, pins[0], config); + return 0; +} + +/* list of pinconfig callbacks for pinconfig vertical in the pinctrl code */ +static struct pinconf_ops exynos5440_pinconf_ops = { + .pin_config_get = exynos5440_pinconf_get, + .pin_config_set = exynos5440_pinconf_set, + .pin_config_group_get = exynos5440_pinconf_group_get, + .pin_config_group_set = exynos5440_pinconf_group_set, +}; + +/* gpiolib gpio_set callback function */ +static void exynos5440_gpio_set(struct gpio_chip *gc, unsigned offset, int value) +{ + struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev); + void __iomem *base = priv->reg_base; + u32 data; + + data = readl(base + GPIO_VAL); + data &= ~(1 << offset); + if (value) + data |= 1 << offset; + writel(data, base + GPIO_VAL); +} + +/* gpiolib gpio_get callback function */ +static int exynos5440_gpio_get(struct gpio_chip *gc, unsigned offset) +{ + struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev); + void __iomem *base = priv->reg_base; + u32 data; + + data = readl(base + GPIO_IN); + data >>= offset; + data &= 1; + return data; +} + +/* gpiolib gpio_direction_input callback function */ +static int exynos5440_gpio_direction_input(struct gpio_chip *gc, unsigned offset) +{ + struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev); + void __iomem *base = priv->reg_base; + u32 data; + + /* first disable the data output enable on this pin */ + data = readl(base + GPIO_OE); + data &= ~(1 << offset); + writel(data, base + GPIO_OE); + + /* now enable input on this pin */ + data = readl(base + GPIO_IE); + data |= 1 << offset; + writel(data, base + GPIO_IE); + return 0; +} + +/* gpiolib gpio_direction_output callback function */ +static int exynos5440_gpio_direction_output(struct gpio_chip *gc, unsigned offset, + int value) +{ + struct exynos5440_pinctrl_priv_data *priv = dev_get_drvdata(gc->dev); + void __iomem *base = priv->reg_base; + u32 data; + + exynos5440_gpio_set(gc, offset, value); + + /* first disable the data input enable on this pin */ + data = readl(base + GPIO_IE); + data &= ~(1 << offset); + writel(data, base + GPIO_IE); + + /* now enable output on this pin */ + data = readl(base + GPIO_OE); + data |= 1 << offset; + writel(data, base + GPIO_OE); + return 0; +} + +/* parse the pin numbers listed in the 'samsung,exynos5440-pins' property */ +static int __init exynos5440_pinctrl_parse_dt_pins(struct platform_device *pdev, + struct device_node *cfg_np, unsigned int **pin_list, + unsigned int *npins) +{ + struct device *dev = &pdev->dev; + struct property *prop; + + prop = of_find_property(cfg_np, "samsung,exynos5440-pins", NULL); + if (!prop) + return -ENOENT; + + *npins = prop->length / sizeof(unsigned long); + if (!*npins) { + dev_err(dev, "invalid pin list in %s node", cfg_np->name); + return -EINVAL; + } + + *pin_list = devm_kzalloc(dev, *npins * sizeof(**pin_list), GFP_KERNEL); + if (!*pin_list) { + dev_err(dev, "failed to allocate memory for pin list\n"); + return -ENOMEM; + } + + return of_property_read_u32_array(cfg_np, "samsung,exynos5440-pins", + *pin_list, *npins); +} + +/* + * Parse the information about all the available pin groups and pin functions + * from device node of the pin-controller. + */ +static int __init exynos5440_pinctrl_parse_dt(struct platform_device *pdev, + struct exynos5440_pinctrl_priv_data *priv) +{ + struct device *dev = &pdev->dev; + struct device_node *dev_np = dev->of_node; + struct device_node *cfg_np; + struct exynos5440_pin_group *groups, *grp; + struct exynos5440_pmx_func *functions, *func; + unsigned *pin_list; + unsigned int npins, grp_cnt, func_idx = 0; + char *gname, *fname; + int ret; + + grp_cnt = of_get_child_count(dev_np); + if (!grp_cnt) + return -EINVAL; + + groups = devm_kzalloc(dev, grp_cnt * sizeof(*groups), GFP_KERNEL); + if (!groups) { + dev_err(dev, "failed allocate memory for ping group list\n"); + return -EINVAL; + } + grp = groups; + + functions = devm_kzalloc(dev, grp_cnt * sizeof(*functions), GFP_KERNEL); + if (!functions) { + dev_err(dev, "failed to allocate memory for function list\n"); + return -EINVAL; + } + func = functions; + + /* + * Iterate over all the child nodes of the pin controller node + * and create pin groups and pin function lists. + */ + for_each_child_of_node(dev_np, cfg_np) { + u32 function; + + ret = exynos5440_pinctrl_parse_dt_pins(pdev, cfg_np, + &pin_list, &npins); + if (ret) + return ret; + + /* derive pin group name from the node name */ + gname = devm_kzalloc(dev, strlen(cfg_np->name) + GSUFFIX_LEN, + GFP_KERNEL); + if (!gname) { + dev_err(dev, "failed to alloc memory for group name\n"); + return -ENOMEM; + } + sprintf(gname, "%s%s", cfg_np->name, GROUP_SUFFIX); + + grp->name = gname; + grp->pins = pin_list; + grp->num_pins = npins; + grp++; + + ret = of_property_read_u32(cfg_np, "samsung,exynos5440-pin-function", + &function); + if (ret) + continue; + + /* derive function name from the node name */ + fname = devm_kzalloc(dev, strlen(cfg_np->name) + FSUFFIX_LEN, + GFP_KERNEL); + if (!fname) { + dev_err(dev, "failed to alloc memory for func name\n"); + return -ENOMEM; + } + sprintf(fname, "%s%s", cfg_np->name, FUNCTION_SUFFIX); + + func->name = fname; + func->groups = devm_kzalloc(dev, sizeof(char *), GFP_KERNEL); + if (!func->groups) { + dev_err(dev, "failed to alloc memory for group list " + "in pin function"); + return -ENOMEM; + } + func->groups[0] = gname; + func->num_groups = 1; + func->function = function; + func++; + func_idx++; + } + + priv->pin_groups = groups; + priv->nr_groups = grp_cnt; + priv->pmx_functions = functions; + priv->nr_functions = func_idx; + return 0; +} + +/* register the pinctrl interface with the pinctrl subsystem */ +static int __init exynos5440_pinctrl_register(struct platform_device *pdev, + struct exynos5440_pinctrl_priv_data *priv) +{ + struct device *dev = &pdev->dev; + struct pinctrl_desc *ctrldesc; + struct pinctrl_dev *pctl_dev; + struct pinctrl_pin_desc *pindesc, *pdesc; + struct pinctrl_gpio_range grange; + char *pin_names; + int pin, ret; + + ctrldesc = devm_kzalloc(dev, sizeof(*ctrldesc), GFP_KERNEL); + if (!ctrldesc) { + dev_err(dev, "could not allocate memory for pinctrl desc\n"); + return -ENOMEM; + } + + ctrldesc->name = "exynos5440-pinctrl"; + ctrldesc->owner = THIS_MODULE; + ctrldesc->pctlops = &exynos5440_pctrl_ops; + ctrldesc->pmxops = &exynos5440_pinmux_ops; + ctrldesc->confops = &exynos5440_pinconf_ops; + + pindesc = devm_kzalloc(&pdev->dev, sizeof(*pindesc) * + EXYNOS5440_MAX_PINS, GFP_KERNEL); + if (!pindesc) { + dev_err(&pdev->dev, "mem alloc for pin descriptors failed\n"); + return -ENOMEM; + } + ctrldesc->pins = pindesc; + ctrldesc->npins = EXYNOS5440_MAX_PINS; + + /* dynamically populate the pin number and pin name for pindesc */ + for (pin = 0, pdesc = pindesc; pin < ctrldesc->npins; pin++, pdesc++) + pdesc->number = pin; + + /* + * allocate space for storing the dynamically generated names for all + * the pins which belong to this pin-controller. + */ + pin_names = devm_kzalloc(&pdev->dev, sizeof(char) * PIN_NAME_LENGTH * + ctrldesc->npins, GFP_KERNEL); + if (!pin_names) { + dev_err(&pdev->dev, "mem alloc for pin names failed\n"); + return -ENOMEM; + } + + /* for each pin, set the name of the pin */ + for (pin = 0; pin < ctrldesc->npins; pin++) { + sprintf(pin_names, "gpio%02d", pin); + pdesc = pindesc + pin; + pdesc->name = pin_names; + pin_names += PIN_NAME_LENGTH; + } + + ret = exynos5440_pinctrl_parse_dt(pdev, priv); + if (ret) + return ret; + + pctl_dev = pinctrl_register(ctrldesc, &pdev->dev, priv); + if (!pctl_dev) { + dev_err(&pdev->dev, "could not register pinctrl driver\n"); + return -EINVAL; + } + + grange.name = "exynos5440-pctrl-gpio-range"; + grange.id = 0; + grange.base = 0; + grange.npins = EXYNOS5440_MAX_PINS; + grange.gc = priv->gc; + pinctrl_add_gpio_range(pctl_dev, &grange); + return 0; +} + +/* register the gpiolib interface with the gpiolib subsystem */ +static int __init exynos5440_gpiolib_register(struct platform_device *pdev, + struct exynos5440_pinctrl_priv_data *priv) +{ + struct gpio_chip *gc; + int ret; + + gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL); + if (!gc) { + dev_err(&pdev->dev, "mem alloc for gpio_chip failed\n"); + return -ENOMEM; + } + + priv->gc = gc; + gc->base = 0; + gc->ngpio = EXYNOS5440_MAX_PINS; + gc->dev = &pdev->dev; + gc->set = exynos5440_gpio_set; + gc->get = exynos5440_gpio_get; + gc->direction_input = exynos5440_gpio_direction_input; + gc->direction_output = exynos5440_gpio_direction_output; + gc->label = "gpiolib-exynos5440"; + gc->owner = THIS_MODULE; + ret = gpiochip_add(gc); + if (ret) { + dev_err(&pdev->dev, "failed to register gpio_chip %s, error " + "code: %d\n", gc->label, ret); + return ret; + } + + return 0; +} + +/* unregister the gpiolib interface with the gpiolib subsystem */ +static int __init exynos5440_gpiolib_unregister(struct platform_device *pdev, + struct exynos5440_pinctrl_priv_data *priv) +{ + int ret = gpiochip_remove(priv->gc); + if (ret) { + dev_err(&pdev->dev, "gpio chip remove failed\n"); + return ret; + } + return 0; +} + +static int __devinit exynos5440_pinctrl_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct exynos5440_pinctrl_priv_data *priv; + struct resource *res; + int ret; + + if (!dev->of_node) { + dev_err(dev, "device tree node not found\n"); + return -ENODEV; + } + + priv = devm_kzalloc(dev, sizeof(priv), GFP_KERNEL); + if (!priv) { + dev_err(dev, "could not allocate memory for private data\n"); + return -ENOMEM; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "cannot find IO resource\n"); + return -ENOENT; + } + + priv->reg_base = devm_request_and_ioremap(&pdev->dev, res); + if (!priv->reg_base) { + dev_err(dev, "ioremap failed\n"); + return -ENODEV; + } + + ret = exynos5440_gpiolib_register(pdev, priv); + if (ret) + return ret; + + ret = exynos5440_pinctrl_register(pdev, priv); + if (ret) { + exynos5440_gpiolib_unregister(pdev, priv); + return ret; + } + + platform_set_drvdata(pdev, priv); + dev_info(dev, "EXYNOS5440 pinctrl driver registered\n"); + return 0; +} + +static const struct of_device_id exynos5440_pinctrl_dt_match[] = { + { .compatible = "samsung,exynos5440-pinctrl" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos5440_pinctrl_dt_match); + +static struct platform_driver exynos5440_pinctrl_driver = { + .probe = exynos5440_pinctrl_probe, + .driver = { + .name = "exynos5440-pinctrl", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(exynos5440_pinctrl_dt_match), + }, +}; + +static int __init exynos5440_pinctrl_drv_register(void) +{ + return platform_driver_register(&exynos5440_pinctrl_driver); +} +postcore_initcall(exynos5440_pinctrl_drv_register); + +static void __exit exynos5440_pinctrl_drv_unregister(void) +{ + platform_driver_unregister(&exynos5440_pinctrl_driver); +} +module_exit(exynos5440_pinctrl_drv_unregister); + +MODULE_AUTHOR("Thomas Abraham <thomas.ab@samsung.com>"); +MODULE_DESCRIPTION("Samsung EXYNOS5440 SoC pinctrl driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index 7f04717176aa..0e26a1656fa6 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1646,7 +1646,8 @@ static struct s3c24xx_serial_drv_data s5pv210_serial_drv_data = { #endif #if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS4212) || \ - defined(CONFIG_SOC_EXYNOS4412) || defined(CONFIG_SOC_EXYNOS5250) + defined(CONFIG_SOC_EXYNOS4412) || defined(CONFIG_SOC_EXYNOS5250) || \ + defined(CONFIG_SOC_EXYNOS5440) static struct s3c24xx_serial_drv_data exynos4210_serial_drv_data = { .info = &(struct s3c24xx_uart_info) { .name = "Samsung Exynos4 UART", |