diff options
Diffstat (limited to 'arch/arm/mach-exynos/common.c')
| -rw-r--r-- | arch/arm/mach-exynos/common.c | 207 |
1 files changed, 127 insertions, 80 deletions
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index d63d399c7bae..745e304ad0de 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -23,9 +23,11 @@ #include <linux/of_irq.h> #include <linux/export.h> #include <linux/irqdomain.h> -#include <linux/irqchip.h> #include <linux/of_address.h> +#include <linux/clocksource.h> +#include <linux/clk-provider.h> #include <linux/irqchip/arm-gic.h> +#include <linux/irqchip/chained_irq.h> #include <asm/proc-fns.h> #include <asm/exception.h> @@ -37,9 +39,9 @@ #include <mach/regs-irq.h> #include <mach/regs-pmu.h> #include <mach/regs-gpio.h> +#include <mach/irqs.h> #include <plat/cpu.h> -#include <plat/clock.h> #include <plat/devs.h> #include <plat/pm.h> #include <plat/sdhci.h> @@ -65,17 +67,16 @@ 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 exynos4_init_uarts(struct s3c2410_uartcfg *cfg, int no); static int exynos_init(void); +unsigned long xxti_f = 0, xusbxti_f = 0; + static struct cpu_table cpu_ids[] __initdata = { { .idcode = EXYNOS4210_CPU_ID, .idmask = EXYNOS4_CPU_MASK, .map_io = exynos4_map_io, - .init_clocks = exynos4_init_clocks, .init_uarts = exynos4_init_uarts, .init = exynos_init, .name = name_exynos4210, @@ -83,7 +84,6 @@ static struct cpu_table cpu_ids[] __initdata = { .idcode = EXYNOS4212_CPU_ID, .idmask = EXYNOS4_CPU_MASK, .map_io = exynos4_map_io, - .init_clocks = exynos4_init_clocks, .init_uarts = exynos4_init_uarts, .init = exynos_init, .name = name_exynos4212, @@ -91,7 +91,6 @@ static struct cpu_table cpu_ids[] __initdata = { .idcode = EXYNOS4412_CPU_ID, .idmask = EXYNOS4_CPU_MASK, .map_io = exynos4_map_io, - .init_clocks = exynos4_init_clocks, .init_uarts = exynos4_init_uarts, .init = exynos_init, .name = name_exynos4412, @@ -99,7 +98,6 @@ static struct cpu_table cpu_ids[] __initdata = { .idcode = EXYNOS5250_SOC_ID, .idmask = EXYNOS5_SOC_MASK, .map_io = exynos5_map_io, - .init_clocks = exynos5_init_clocks, .init = exynos_init, .name = name_exynos5250, }, { @@ -122,17 +120,6 @@ static struct map_desc exynos_iodesc[] __initdata = { }, }; -#ifdef CONFIG_ARCH_EXYNOS5 -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, - }, -}; -#endif - static struct map_desc exynos4_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -235,6 +222,33 @@ static struct map_desc exynos4_iodesc1[] __initdata = { }, }; +static struct map_desc exynos4210_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM_NS, + .pfn = __phys_to_pfn(EXYNOS4210_PA_SYSRAM_NS), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +static struct map_desc exynos4x12_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM_NS, + .pfn = __phys_to_pfn(EXYNOS4x12_PA_SYSRAM_NS), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + +static struct map_desc exynos5250_iodesc[] __initdata = { + { + .virtual = (unsigned long)S5P_VA_SYSRAM_NS, + .pfn = __phys_to_pfn(EXYNOS5250_PA_SYSRAM_NS), + .length = SZ_4K, + .type = MT_DEVICE, + }, +}; + static struct map_desc exynos5_iodesc[] __initdata = { { .virtual = (unsigned long)S3C_VA_SYS, @@ -257,11 +271,6 @@ static struct map_desc exynos5_iodesc[] __initdata = { .length = SZ_4K, .type = MT_DEVICE, }, { - .virtual = (unsigned long)S5P_VA_SYSTIMER, - .pfn = __phys_to_pfn(EXYNOS5_PA_SYSTIMER), - .length = SZ_4K, - .type = MT_DEVICE, - }, { .virtual = (unsigned long)S5P_VA_SYSRAM, .pfn = __phys_to_pfn(EXYNOS5_PA_SYSRAM), .length = SZ_4K, @@ -328,6 +337,31 @@ void __init exynos_init_late(void) exynos_pm_late_initcall(); } +#ifdef CONFIG_OF +int __init exynos_fdt_map_chipid(unsigned long node, const char *uname, + int depth, void *data) +{ + struct map_desc iodesc; + __be32 *reg; + unsigned long len; + + if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid") && + !of_flat_dt_is_compatible(node, "samsung,exynos5440-clock")) + return 0; + + reg = of_get_flat_dt_prop(node, "reg", &len); + if (reg == NULL || len != (sizeof(unsigned long) * 2)) + return 0; + + iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0])); + iodesc.length = be32_to_cpu(reg[1]) - 1; + iodesc.virtual = (unsigned long)S5P_VA_CHIPID; + iodesc.type = MT_DEVICE; + iotable_init(&iodesc, 1); + return 1; +} +#endif + /* * exynos_map_io * @@ -336,19 +370,12 @@ void __init exynos_init_late(void) void __init exynos_init_io(struct map_desc *mach_desc, int size) { - struct map_desc *iodesc = exynos_iodesc; - int iodesc_sz = ARRAY_SIZE(exynos_iodesc); -#if defined(CONFIG_OF) && defined(CONFIG_ARCH_EXYNOS5) - unsigned long root = of_get_flat_dt_root(); - - /* initialize the io descriptors we need for initialization */ - if (of_flat_dt_is_compatible(root, "samsung,exynos5440")) { - iodesc = exynos5440_iodesc; - iodesc_sz = ARRAY_SIZE(exynos5440_iodesc); - } +#ifdef CONFIG_OF + if (initial_boot_params) + of_scan_flat_dt(exynos_fdt_map_chipid, NULL); + else #endif - - iotable_init(iodesc, iodesc_sz); + iotable_init(exynos_iodesc, ARRAY_SIZE(exynos_iodesc)); if (mach_desc) iotable_init(mach_desc, size); @@ -368,6 +395,11 @@ static void __init exynos4_map_io(void) else iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1)); + if (soc_is_exynos4210()) + iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc)); + if (soc_is_exynos4212() || soc_is_exynos4412()) + iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc)); + /* initialize device information early */ exynos4_default_sdhci0(); exynos4_default_sdhci1(); @@ -400,22 +432,9 @@ static void __init exynos4_map_io(void) static void __init exynos5_map_io(void) { iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc)); -} -static void __init exynos4_init_clocks(int xtal) -{ - printk(KERN_DEBUG "%s: initializing clocks\n", __func__); - - s3c24xx_register_baseclocks(xtal); - s5p_register_clocks(xtal); - - if (soc_is_exynos4210()) - exynos4210_register_clocks(); - else if (soc_is_exynos4212() || soc_is_exynos4412()) - exynos4212_register_clocks(); - - exynos4_register_clocks(); - exynos4_setup_clocks(); + if (soc_is_exynos5250()) + iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc)); } static void __init exynos5440_map_io(void) @@ -423,24 +442,36 @@ static void __init exynos5440_map_io(void) iotable_init(exynos5440_iodesc0, ARRAY_SIZE(exynos5440_iodesc0)); } -static void __init exynos5_init_clocks(int xtal) +void __init exynos_init_time(void) { - printk(KERN_DEBUG "%s: initializing clocks\n", __func__); - - /* EXYNOS5440 can support only common clock framework */ - - if (soc_is_exynos5440()) - return; - -#ifdef CONFIG_SOC_EXYNOS5250 - s3c24xx_register_baseclocks(xtal); - s5p_register_clocks(xtal); - - exynos5_register_clocks(); - exynos5_setup_clocks(); + if (of_have_populated_dt()) { +#ifdef CONFIG_OF + of_clk_init(NULL); + clocksource_of_init(); +#endif + } else { + /* todo: remove after migrating legacy E4 platforms to dt */ +#ifdef CONFIG_ARCH_EXYNOS4 + exynos4_clk_init(NULL, !soc_is_exynos4210(), S5P_VA_CMU, readl(S5P_VA_CHIPID + 8) & 1); + exynos4_clk_register_fixed_ext(xxti_f, xusbxti_f); #endif + mct_init(S5P_VA_SYSTIMER, EXYNOS4_IRQ_MCT_G0, EXYNOS4_IRQ_MCT_L0, EXYNOS4_IRQ_MCT_L1); + } +} + +static unsigned int max_combiner_nr(void) +{ + if (soc_is_exynos5250()) + return EXYNOS5_MAX_COMBINER_NR; + else if (soc_is_exynos4412()) + return EXYNOS4412_MAX_COMBINER_NR; + else if (soc_is_exynos4212()) + return EXYNOS4212_MAX_COMBINER_NR; + else + return EXYNOS4210_MAX_COMBINER_NR; } + void __init exynos4_init_irq(void) { unsigned int gic_bank_offset; @@ -455,14 +486,10 @@ void __init exynos4_init_irq(void) #endif if (!of_have_populated_dt()) - combiner_init(S5P_VA_COMBINER_BASE, NULL); + combiner_init(S5P_VA_COMBINER_BASE, NULL, + max_combiner_nr(), COMBINER_IRQ(0, 0)); - /* - * The parameters of s5p_init_irq() are for VIC init. - * Theses parameters should be NULL and 0 because EXYNOS4 - * uses GIC instead of VIC. - */ - s5p_init_irq(NULL, 0); + gic_arch_extn.irq_set_wake = s3c_irq_wake; } void __init exynos5_init_irq(void) @@ -470,14 +497,6 @@ void __init exynos5_init_irq(void) #ifdef CONFIG_OF irqchip_init(); #endif - /* - * The parameters of s5p_init_irq() are for VIC init. - * Theses parameters should be NULL and 0 because EXYNOS4 - * uses GIC instead of VIC. - */ - if (!of_machine_is_compatible("samsung,exynos5440")) - s5p_init_irq(NULL, 0); - gic_arch_extn.irq_set_wake = s3c_irq_wake; } @@ -822,6 +841,7 @@ static int __init exynos_init_irq_eint(void) static const struct of_device_id exynos_pinctrl_ids[] = { { .compatible = "samsung,exynos4210-pinctrl", }, { .compatible = "samsung,exynos4x12-pinctrl", }, + { .compatible = "samsung,exynos5250-pinctrl", }, }; struct device_node *pctrl_np, *wkup_np; const char *wkup_compat = "samsung,exynos4210-wakeup-eint"; @@ -875,3 +895,30 @@ static int __init exynos_init_irq_eint(void) return 0; } arch_initcall(exynos_init_irq_eint); + +static struct resource exynos4_pmu_resource[] = { + DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU), + DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU1), +#if defined(CONFIG_SOC_EXYNOS4412) + DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU2), + DEFINE_RES_IRQ(EXYNOS4_IRQ_PMU_CPU3), +#endif +}; + +static struct platform_device exynos4_device_pmu = { + .name = "arm-pmu", + .num_resources = ARRAY_SIZE(exynos4_pmu_resource), + .resource = exynos4_pmu_resource, +}; + +static int __init exynos_armpmu_init(void) +{ + if (!of_have_populated_dt()) { + if (soc_is_exynos4210() || soc_is_exynos4212()) + exynos4_device_pmu.num_resources = 2; + platform_device_register(&exynos4_device_pmu); + } + + return 0; +} +arch_initcall(exynos_armpmu_init); |