diff options
author | Olof Johansson <olof@lixom.net> | 2015-04-03 22:05:41 (GMT) |
---|---|---|
committer | Olof Johansson <olof@lixom.net> | 2015-04-03 22:05:41 (GMT) |
commit | 7cef9875f304d10fff18c2625ebd8a5bd748ce8b (patch) | |
tree | f0ed8a8cf41187330704c05ac310fca414cd2643 /arch/arm/mach-exynos | |
parent | f83255cca7ce437e9a071a6e177453371cec78b8 (diff) | |
parent | bd0d888c4f7f125b7c7168f51039142150d9d1cc (diff) | |
download | linux-7cef9875f304d10fff18c2625ebd8a5bd748ce8b.tar.xz |
Merge tag 'samsung-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc
Merge "Samsung mach updates for v4.1" from Kukjin Kim:
- for s3c64xx
: use fixed IRQ bases to avoid conflicts on Cragganmore
- for exynos3250
: add cpuidle and AFTR mode support
: fix CPU1 hotplug
- for exynos SoCs
: add code for setting/clearing boot flag for cpuidle AFTR
: remove left over 'extra_save' and constify 'exynos_pm_data' array
: use static in suspend.c as per compiler suggestions
: use platform device name as power domain name
: add support for async-bridge clocks for pm_domains (exynos5420)
* tag 'samsung-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: allow cpuidle driver usage on Exynos3250 SoC
ARM: EXYNOS: add AFTR mode support for Exynos3250
ARM: EXYNOS: add code for setting/clearing boot flag
ARM: EXYNOS: fix CPU1 hotplug on Exynos3250
ARM: S3C64XX: Use fixed IRQ bases to avoid conflicts on Cragganmore
ARM: EXYNOS: Remove left over 'extra_save'
ARM: EXYNOS: Constify exynos_pm_data array
ARM: EXYNOS: use static in suspend.c
ARM: EXYNOS: Use platform device name as power domain name
ARM: EXYNOS: add support for async-bridge clocks for pm_domains
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-exynos')
-rw-r--r-- | arch/arm/mach-exynos/common.h | 6 | ||||
-rw-r--r-- | arch/arm/mach-exynos/exynos.c | 1 | ||||
-rw-r--r-- | arch/arm/mach-exynos/firmware.c | 33 | ||||
-rw-r--r-- | arch/arm/mach-exynos/platsmp.c | 23 | ||||
-rw-r--r-- | arch/arm/mach-exynos/pm.c | 12 | ||||
-rw-r--r-- | arch/arm/mach-exynos/pm_domains.c | 29 | ||||
-rw-r--r-- | arch/arm/mach-exynos/regs-pmu.h | 3 | ||||
-rw-r--r-- | arch/arm/mach-exynos/smc.h | 9 | ||||
-rw-r--r-- | arch/arm/mach-exynos/suspend.c | 22 |
9 files changed, 112 insertions, 26 deletions
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h index f70eca7..acd5b56 100644 --- a/arch/arm/mach-exynos/common.h +++ b/arch/arm/mach-exynos/common.h @@ -126,6 +126,12 @@ enum { void exynos_firmware_init(void); +/* CPU BOOT mode flag for Exynos3250 SoC bootloader */ +#define C2_STATE (1 << 3) + +void exynos_set_boot_flag(unsigned int cpu, unsigned int mode); +void exynos_clear_boot_flag(unsigned int cpu, unsigned int mode); + extern u32 exynos_get_eint_wake_mask(void); #ifdef CONFIG_PM_SLEEP diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 9e9dfdf..3e45bcb 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -219,6 +219,7 @@ static void __init exynos_dt_machine_init(void) of_machine_is_compatible("samsung,exynos4212") || (of_machine_is_compatible("samsung,exynos4412") && of_machine_is_compatible("samsung,trats2")) || + of_machine_is_compatible("samsung,exynos3250") || of_machine_is_compatible("samsung,exynos5250")) platform_device_register(&exynos_cpuidle); diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index 4791a3c..1bd3576 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -48,7 +48,13 @@ static int exynos_do_idle(unsigned long mode) __raw_writel(virt_to_phys(exynos_cpu_resume_ns), sysram_ns_base_addr + 0x24); __raw_writel(EXYNOS_AFTR_MAGIC, sysram_ns_base_addr + 0x20); - exynos_smc(SMC_CMD_CPU0AFTR, 0, 0, 0); + if (soc_is_exynos3250()) { + exynos_smc(SMC_CMD_SAVE, OP_TYPE_CORE, + SMC_POWERSTATE_IDLE, 0); + exynos_smc(SMC_CMD_SHUTDOWN, OP_TYPE_CLUSTER, + SMC_POWERSTATE_IDLE, 0); + } else + exynos_smc(SMC_CMD_CPU0AFTR, 0, 0, 0); break; case FW_DO_IDLE_SLEEP: exynos_smc(SMC_CMD_SLEEP, 0, 0, 0); @@ -206,3 +212,28 @@ void __init exynos_firmware_init(void) outer_cache.configure = exynos_l2_configure; } } + +#define REG_CPU_STATE_ADDR (sysram_ns_base_addr + 0x28) +#define BOOT_MODE_MASK 0x1f + +void exynos_set_boot_flag(unsigned int cpu, unsigned int mode) +{ + unsigned int tmp; + + tmp = __raw_readl(REG_CPU_STATE_ADDR + cpu * 4); + + if (mode & BOOT_MODE_MASK) + tmp &= ~BOOT_MODE_MASK; + + tmp |= mode; + __raw_writel(tmp, REG_CPU_STATE_ADDR + cpu * 4); +} + +void exynos_clear_boot_flag(unsigned int cpu, unsigned int mode) +{ + unsigned int tmp; + + tmp = __raw_readl(REG_CPU_STATE_ADDR + cpu * 4); + tmp &= ~mode; + __raw_writel(tmp, REG_CPU_STATE_ADDR + cpu * 4); +} diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c index 3f32c47..511b81a 100644 --- a/arch/arm/mach-exynos/platsmp.c +++ b/arch/arm/mach-exynos/platsmp.c @@ -126,6 +126,8 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) */ void exynos_cpu_power_down(int cpu) { + u32 core_conf; + if (cpu == 0 && (of_machine_is_compatible("samsung,exynos5420") || of_machine_is_compatible("samsung,exynos5800"))) { /* @@ -138,7 +140,10 @@ void exynos_cpu_power_down(int cpu) if (!(val & S5P_CORE_LOCAL_PWR_EN)) return; } - pmu_raw_writel(0, EXYNOS_ARM_CORE_CONFIGURATION(cpu)); + + core_conf = pmu_raw_readl(EXYNOS_ARM_CORE_CONFIGURATION(cpu)); + core_conf &= ~S5P_CORE_LOCAL_PWR_EN; + pmu_raw_writel(core_conf, EXYNOS_ARM_CORE_CONFIGURATION(cpu)); } /** @@ -149,7 +154,12 @@ void exynos_cpu_power_down(int cpu) */ void exynos_cpu_power_up(int cpu) { - pmu_raw_writel(S5P_CORE_LOCAL_PWR_EN, + u32 core_conf = S5P_CORE_LOCAL_PWR_EN; + + if (soc_is_exynos3250()) + core_conf |= S5P_CORE_AUTOWAKEUP_EN; + + pmu_raw_writel(core_conf, EXYNOS_ARM_CORE_CONFIGURATION(cpu)); } @@ -227,6 +237,10 @@ static void exynos_core_restart(u32 core_id) if (!of_machine_is_compatible("samsung,exynos3250")) return; + while (!pmu_raw_readl(S5P_PMU_SPARE2)) + udelay(10); + udelay(10); + val = pmu_raw_readl(EXYNOS_ARM_CORE_STATUS(core_id)); val |= S5P_CORE_WAKEUP_FROM_LOCAL_CFG; pmu_raw_writel(val, EXYNOS_ARM_CORE_STATUS(core_id)); @@ -347,7 +361,10 @@ static int exynos_boot_secondary(unsigned int cpu, struct task_struct *idle) call_firmware_op(cpu_boot, core_id); - arch_send_wakeup_ipi_mask(cpumask_of(cpu)); + if (soc_is_exynos3250()) + dsb_sev(); + else + arch_send_wakeup_ipi_mask(cpumask_of(cpu)); if (pen_release == -1) break; diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c index e6209da..0a7e3af 100644 --- a/arch/arm/mach-exynos/pm.c +++ b/arch/arm/mach-exynos/pm.c @@ -127,6 +127,8 @@ int exynos_pm_central_resume(void) static void exynos_set_wakeupmask(long mask) { pmu_raw_writel(mask, S5P_WAKEUP_MASK); + if (soc_is_exynos3250()) + pmu_raw_writel(0x0, S5P_WAKEUP_MASK2); } static void exynos_cpu_set_boot_vector(long flags) @@ -140,7 +142,7 @@ static int exynos_aftr_finisher(unsigned long flags) { int ret; - exynos_set_wakeupmask(0x0000ff3e); + exynos_set_wakeupmask(soc_is_exynos3250() ? 0x40003ffe : 0x0000ff3e); /* Set value of power down register for aftr mode */ exynos_sys_powerdown_conf(SYS_AFTR); @@ -157,8 +159,13 @@ static int exynos_aftr_finisher(unsigned long flags) void exynos_enter_aftr(void) { + unsigned int cpuid = smp_processor_id(); + cpu_pm_enter(); + if (soc_is_exynos3250()) + exynos_set_boot_flag(cpuid, C2_STATE); + exynos_pm_central_suspend(); if (of_machine_is_compatible("samsung,exynos4212") || @@ -178,6 +185,9 @@ void exynos_enter_aftr(void) exynos_pm_central_resume(); + if (soc_is_exynos3250()) + exynos_clear_boot_flag(cpuid, C2_STATE); + cpu_pm_exit(); } diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index 20f2671..a80d15d 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -37,6 +37,7 @@ struct exynos_pm_domain { struct clk *oscclk; struct clk *clk[MAX_CLK_PER_DOMAIN]; struct clk *pclk[MAX_CLK_PER_DOMAIN]; + struct clk *asb_clk[MAX_CLK_PER_DOMAIN]; }; static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on) @@ -45,14 +46,19 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on) void __iomem *base; u32 timeout, pwr; char *op; + int i; pd = container_of(domain, struct exynos_pm_domain, pd); base = pd->base; + for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) { + if (IS_ERR(pd->asb_clk[i])) + break; + clk_prepare_enable(pd->asb_clk[i]); + } + /* Set oscclk before powering off a domain*/ if (!power_on) { - int i; - for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) { if (IS_ERR(pd->clk[i])) break; @@ -81,8 +87,6 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on) /* Restore clocks after powering on a domain*/ if (power_on) { - int i; - for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) { if (IS_ERR(pd->clk[i])) break; @@ -92,6 +96,12 @@ static int exynos_pd_power(struct generic_pm_domain *domain, bool power_on) } } + for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) { + if (IS_ERR(pd->asb_clk[i])) + break; + clk_disable_unprepare(pd->asb_clk[i]); + } + return 0; } @@ -125,12 +135,21 @@ static __init int exynos4_pm_init_power_domain(void) return -ENOMEM; } - pd->pd.name = kstrdup(np->name, GFP_KERNEL); + pd->pd.name = kstrdup(dev_name(dev), GFP_KERNEL); pd->name = pd->pd.name; pd->base = of_iomap(np, 0); pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; + for (i = 0; i < MAX_CLK_PER_DOMAIN; i++) { + char clk_name[8]; + + snprintf(clk_name, sizeof(clk_name), "asb%d", i); + pd->asb_clk[i] = clk_get(dev, clk_name); + if (IS_ERR(pd->asb_clk[i])) + break; + } + pd->oscclk = clk_get(dev, "oscclk"); if (IS_ERR(pd->oscclk)) goto no_clk; diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h index eb461e1..b761433 100644 --- a/arch/arm/mach-exynos/regs-pmu.h +++ b/arch/arm/mach-exynos/regs-pmu.h @@ -43,12 +43,14 @@ #define S5P_WAKEUP_STAT 0x0600 #define S5P_EINT_WAKEUP_MASK 0x0604 #define S5P_WAKEUP_MASK 0x0608 +#define S5P_WAKEUP_MASK2 0x0614 #define S5P_INFORM0 0x0800 #define S5P_INFORM1 0x0804 #define S5P_INFORM5 0x0814 #define S5P_INFORM6 0x0818 #define S5P_INFORM7 0x081C +#define S5P_PMU_SPARE2 0x0908 #define S5P_PMU_SPARE3 0x090C #define EXYNOS_IROM_DATA2 0x0988 @@ -182,6 +184,7 @@ #define S5P_CORE_LOCAL_PWR_EN 0x3 #define S5P_CORE_WAKEUP_FROM_LOCAL_CFG (0x3 << 8) +#define S5P_CORE_AUTOWAKEUP_EN (1 << 31) /* Only for EXYNOS4210 */ #define S5P_CMU_CLKSTOP_LCD1_LOWPWR 0x1154 diff --git a/arch/arm/mach-exynos/smc.h b/arch/arm/mach-exynos/smc.h index f7b82f9..c284571 100644 --- a/arch/arm/mach-exynos/smc.h +++ b/arch/arm/mach-exynos/smc.h @@ -17,6 +17,8 @@ #define SMC_CMD_SLEEP (-3) #define SMC_CMD_CPU1BOOT (-4) #define SMC_CMD_CPU0AFTR (-5) +#define SMC_CMD_SAVE (-6) +#define SMC_CMD_SHUTDOWN (-7) /* For CP15 Access */ #define SMC_CMD_C15RESUME (-11) /* For L2 Cache Access */ @@ -32,4 +34,11 @@ extern void exynos_smc(u32 cmd, u32 arg1, u32 arg2, u32 arg3); #endif /* __ASSEMBLY__ */ +/* op type for SMC_CMD_SAVE and SMC_CMD_SHUTDOWN */ +#define OP_TYPE_CORE 0x0 +#define OP_TYPE_CLUSTER 0x1 + +/* Power State required for SMC_CMD_SAVE and SMC_CMD_SHUTDOWN */ +#define SMC_POWERSTATE_IDLE 0x1 + #endif diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c index 52e2b1a..89a6d3f 100644 --- a/arch/arm/mach-exynos/suspend.c +++ b/arch/arm/mach-exynos/suspend.c @@ -63,8 +63,6 @@ static struct sleep_save exynos_core_save[] = { struct exynos_pm_data { const struct exynos_wkup_irq *wkup_irq; - struct sleep_save *extra_save; - int num_extra_save; unsigned int wake_disable_mask; unsigned int *release_ret_regs; @@ -75,7 +73,7 @@ struct exynos_pm_data { int (*cpu_suspend)(unsigned long); }; -struct exynos_pm_data *pm_data; +static const struct exynos_pm_data *pm_data; static int exynos5420_cpu_state; static unsigned int exynos_pmu_spare3; @@ -104,7 +102,7 @@ static const struct exynos_wkup_irq exynos5250_wkup_irq[] = { { /* sentinel */ }, }; -unsigned int exynos_release_ret_regs[] = { +static unsigned int exynos_release_ret_regs[] = { S5P_PAD_RET_MAUDIO_OPTION, S5P_PAD_RET_GPIO_OPTION, S5P_PAD_RET_UART_OPTION, @@ -115,7 +113,7 @@ unsigned int exynos_release_ret_regs[] = { REG_TABLE_END, }; -unsigned int exynos3250_release_ret_regs[] = { +static unsigned int exynos3250_release_ret_regs[] = { S5P_PAD_RET_MAUDIO_OPTION, S5P_PAD_RET_GPIO_OPTION, S5P_PAD_RET_UART_OPTION, @@ -128,7 +126,7 @@ unsigned int exynos3250_release_ret_regs[] = { REG_TABLE_END, }; -unsigned int exynos5420_release_ret_regs[] = { +static unsigned int exynos5420_release_ret_regs[] = { EXYNOS_PAD_RET_DRAM_OPTION, EXYNOS_PAD_RET_MAUDIO_OPTION, EXYNOS_PAD_RET_JTAG_OPTION, @@ -240,10 +238,6 @@ static void exynos_pm_prepare(void) s3c_pm_do_save(exynos_core_save, ARRAY_SIZE(exynos_core_save)); - if (pm_data->extra_save) - s3c_pm_do_save(pm_data->extra_save, - pm_data->num_extra_save); - exynos_pm_enter_sleep_mode(); /* ensure at least INFORM0 has the resume address */ @@ -366,10 +360,6 @@ static void exynos_pm_resume(void) /* For release retention */ exynos_pm_release_retention(); - if (pm_data->extra_save) - s3c_pm_do_restore_core(pm_data->extra_save, - pm_data->num_extra_save); - s3c_pm_do_restore_core(exynos_core_save, ARRAY_SIZE(exynos_core_save)); if (cpuid == ARM_CPU_PART_CORTEX_A9) @@ -576,7 +566,7 @@ static const struct exynos_pm_data exynos5250_pm_data = { .cpu_suspend = exynos_cpu_suspend, }; -static struct exynos_pm_data exynos5420_pm_data = { +static const struct exynos_pm_data exynos5420_pm_data = { .wkup_irq = exynos5250_wkup_irq, .wake_disable_mask = (0x7F << 7) | (0x1F << 1), .release_ret_regs = exynos5420_release_ret_regs, @@ -622,7 +612,7 @@ void __init exynos_pm_init(void) pr_err("Failed to find PMU node\n"); return; } - pm_data = (struct exynos_pm_data *) match->data; + pm_data = (const struct exynos_pm_data *) match->data; /* Platform-specific GIC callback */ gic_arch_extn.irq_set_wake = exynos_irq_set_wake; |