| Message ID | 1490879826-16754-11-git-send-email-pankaj.dubey@samsung.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Headers | show |
On Thu, Mar 30, 2017 at 3:17 PM, Pankaj Dubey <pankaj.dubey@samsung.com> wrote: > Various Exynos SoC handles CPU power_up and power_down operation > differently. To handle this difference until now we were using > soc_is_exynosMMM helper functions, in an attempt to remove the dependency > of such helper functions specific to each SoC, let's move power_{down,up} > functionality as a SoC specific function pointer hooks in > struct exynos_cpu_info. > > Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> > --- > arch/arm/mach-exynos/platsmp.c | 61 +++++++++++++++++++++++++++++++----------- > 1 file changed, 46 insertions(+), 15 deletions(-) > > diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c > index ff369b9..6f08b15 100644 > --- a/arch/arm/mach-exynos/platsmp.c > +++ b/arch/arm/mach-exynos/platsmp.c > @@ -37,9 +37,13 @@ extern void exynos4_secondary_startup(void); > /* > * struct exynos_cpu_info - Exynos CPU related info/operations > * @cpu_boot_reg: computes cpu boot address for requested cpu > + * @cpu_power_down: handles cpu power down routine for requested cpu > + * @cpu_power_up: handles cpu power up routine for requested cpu > */ > struct exynos_cpu_info { > void __iomem* (*cpu_boot_reg)(u32 cpu); > + void (*cpu_power_down)(u32 cpu); > + void (*cpu_power_up)(u32 cpu); > }; > > static const struct exynos_cpu_info *cpu_info; > @@ -92,19 +96,29 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) > } > #endif /* CONFIG_HOTPLUG_CPU */ > > -/** > - * exynos_core_power_down : power down the specified cpu > +/* > + * exynos_core_power_down - power down the specified cpu > * @cpu : the cpu to power down > - * > - * Power down the specified cpu. The sequence must be finished by a > - * call to cpu_do_idle() > - * > + * The sequence must be finished by a call to cpu_do_idle() > */ > void exynos_cpu_power_down(int cpu) > { > + if (cpu_info && cpu_info->cpu_power_down) > + cpu_info->cpu_power_down(cpu); > +} > + > +static void exynos_common_cpu_power_down(u32 cpu) > +{ > u32 core_conf; > > - if (cpu == 0 && (soc_is_exynos5420() || soc_is_exynos5800())) { > + 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)); > +} > + > +static void exynos5420_cpu_power_down(u32 cpu) > +{ > + if (cpu == 0) { > /* > * Bypass power down for CPU0 during suspend. Check for > * the SYS_PWR_REG value to decide if we are suspending > @@ -116,24 +130,31 @@ void exynos_cpu_power_down(int cpu) > return; > } > > - 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)); > + exynos_common_cpu_power_down(cpu); > } > > -/** > +/* > * exynos_cpu_power_up : power up the specified cpu > * @cpu : the cpu to power up > - * > - * Power up the specified cpu > */ > void exynos_cpu_power_up(int cpu) > { > + if (cpu_info && cpu_info->cpu_power_up) > + cpu_info->cpu_power_up(cpu); > +} > + > +static void exynos_common_cpu_power_up(u32 cpu) > +{ > u32 core_conf = S5P_CORE_LOCAL_PWR_EN; > + pmu_raw_writel(core_conf, > + EXYNOS_ARM_CORE_CONFIGURATION(cpu)); > +} > > - if (soc_is_exynos3250()) > - core_conf |= S5P_CORE_AUTOWAKEUP_EN; > +static void exynos3250_cpu_power_up(u32 cpu) > +{ > + u32 core_conf = S5P_CORE_LOCAL_PWR_EN; > > + core_conf |= S5P_CORE_AUTOWAKEUP_EN; Maybe just: core_conf = S5P_CORE_LOCAL_PWR_EN \ | S5P_CORE_AUTOWAKEUP_EN; ? Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Friday 07 April 2017 05:34 PM, Krzysztof Kozlowski wrote: > On Thu, Mar 30, 2017 at 3:17 PM, Pankaj Dubey <pankaj.dubey@samsung.com> wrote: >> Various Exynos SoC handles CPU power_up and power_down operation >> differently. To handle this difference until now we were using >> soc_is_exynosMMM helper functions, in an attempt to remove the dependency >> of such helper functions specific to each SoC, let's move power_{down,up} >> functionality as a SoC specific function pointer hooks in >> struct exynos_cpu_info. >> >> Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> >> --- >> arch/arm/mach-exynos/platsmp.c | 61 +++++++++++++++++++++++++++++++----------- >> 1 file changed, 46 insertions(+), 15 deletions(-) >> >> diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c >> index ff369b9..6f08b15 100644 >> --- a/arch/arm/mach-exynos/platsmp.c >> +++ b/arch/arm/mach-exynos/platsmp.c >> @@ -37,9 +37,13 @@ extern void exynos4_secondary_startup(void); >> /* >> * struct exynos_cpu_info - Exynos CPU related info/operations >> * @cpu_boot_reg: computes cpu boot address for requested cpu >> + * @cpu_power_down: handles cpu power down routine for requested cpu >> + * @cpu_power_up: handles cpu power up routine for requested cpu >> */ >> struct exynos_cpu_info { >> void __iomem* (*cpu_boot_reg)(u32 cpu); >> + void (*cpu_power_down)(u32 cpu); >> + void (*cpu_power_up)(u32 cpu); >> }; >> >> static const struct exynos_cpu_info *cpu_info; >> @@ -92,19 +96,29 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) >> } >> #endif /* CONFIG_HOTPLUG_CPU */ >> >> -/** >> - * exynos_core_power_down : power down the specified cpu >> +/* >> + * exynos_core_power_down - power down the specified cpu >> * @cpu : the cpu to power down >> - * >> - * Power down the specified cpu. The sequence must be finished by a >> - * call to cpu_do_idle() >> - * >> + * The sequence must be finished by a call to cpu_do_idle() >> */ >> void exynos_cpu_power_down(int cpu) >> { >> + if (cpu_info && cpu_info->cpu_power_down) >> + cpu_info->cpu_power_down(cpu); >> +} >> + >> +static void exynos_common_cpu_power_down(u32 cpu) >> +{ >> u32 core_conf; >> >> - if (cpu == 0 && (soc_is_exynos5420() || soc_is_exynos5800())) { >> + 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)); >> +} >> + >> +static void exynos5420_cpu_power_down(u32 cpu) >> +{ >> + if (cpu == 0) { >> /* >> * Bypass power down for CPU0 during suspend. Check for >> * the SYS_PWR_REG value to decide if we are suspending >> @@ -116,24 +130,31 @@ void exynos_cpu_power_down(int cpu) >> return; >> } >> >> - 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)); >> + exynos_common_cpu_power_down(cpu); >> } >> >> -/** >> +/* >> * exynos_cpu_power_up : power up the specified cpu >> * @cpu : the cpu to power up >> - * >> - * Power up the specified cpu >> */ >> void exynos_cpu_power_up(int cpu) >> { >> + if (cpu_info && cpu_info->cpu_power_up) >> + cpu_info->cpu_power_up(cpu); >> +} >> + >> +static void exynos_common_cpu_power_up(u32 cpu) >> +{ >> u32 core_conf = S5P_CORE_LOCAL_PWR_EN; >> + pmu_raw_writel(core_conf, >> + EXYNOS_ARM_CORE_CONFIGURATION(cpu)); >> +} >> >> - if (soc_is_exynos3250()) >> - core_conf |= S5P_CORE_AUTOWAKEUP_EN; >> +static void exynos3250_cpu_power_up(u32 cpu) >> +{ >> + u32 core_conf = S5P_CORE_LOCAL_PWR_EN; >> >> + core_conf |= S5P_CORE_AUTOWAKEUP_EN; > > Maybe just: > core_conf = S5P_CORE_LOCAL_PWR_EN \ > | S5P_CORE_AUTOWAKEUP_EN; > ? OK, it can be done. Thanks, Pankaj Dubey > > Best regards, > Krzysztof > > > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c index ff369b9..6f08b15 100644 --- a/arch/arm/mach-exynos/platsmp.c +++ b/arch/arm/mach-exynos/platsmp.c @@ -37,9 +37,13 @@ extern void exynos4_secondary_startup(void); /* * struct exynos_cpu_info - Exynos CPU related info/operations * @cpu_boot_reg: computes cpu boot address for requested cpu + * @cpu_power_down: handles cpu power down routine for requested cpu + * @cpu_power_up: handles cpu power up routine for requested cpu */ struct exynos_cpu_info { void __iomem* (*cpu_boot_reg)(u32 cpu); + void (*cpu_power_down)(u32 cpu); + void (*cpu_power_up)(u32 cpu); }; static const struct exynos_cpu_info *cpu_info; @@ -92,19 +96,29 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious) } #endif /* CONFIG_HOTPLUG_CPU */ -/** - * exynos_core_power_down : power down the specified cpu +/* + * exynos_core_power_down - power down the specified cpu * @cpu : the cpu to power down - * - * Power down the specified cpu. The sequence must be finished by a - * call to cpu_do_idle() - * + * The sequence must be finished by a call to cpu_do_idle() */ void exynos_cpu_power_down(int cpu) { + if (cpu_info && cpu_info->cpu_power_down) + cpu_info->cpu_power_down(cpu); +} + +static void exynos_common_cpu_power_down(u32 cpu) +{ u32 core_conf; - if (cpu == 0 && (soc_is_exynos5420() || soc_is_exynos5800())) { + 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)); +} + +static void exynos5420_cpu_power_down(u32 cpu) +{ + if (cpu == 0) { /* * Bypass power down for CPU0 during suspend. Check for * the SYS_PWR_REG value to decide if we are suspending @@ -116,24 +130,31 @@ void exynos_cpu_power_down(int cpu) return; } - 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)); + exynos_common_cpu_power_down(cpu); } -/** +/* * exynos_cpu_power_up : power up the specified cpu * @cpu : the cpu to power up - * - * Power up the specified cpu */ void exynos_cpu_power_up(int cpu) { + if (cpu_info && cpu_info->cpu_power_up) + cpu_info->cpu_power_up(cpu); +} + +static void exynos_common_cpu_power_up(u32 cpu) +{ u32 core_conf = S5P_CORE_LOCAL_PWR_EN; + pmu_raw_writel(core_conf, + EXYNOS_ARM_CORE_CONFIGURATION(cpu)); +} - if (soc_is_exynos3250()) - core_conf |= S5P_CORE_AUTOWAKEUP_EN; +static void exynos3250_cpu_power_up(u32 cpu) +{ + u32 core_conf = S5P_CORE_LOCAL_PWR_EN; + core_conf |= S5P_CORE_AUTOWAKEUP_EN; pmu_raw_writel(core_conf, EXYNOS_ARM_CORE_CONFIGURATION(cpu)); } @@ -339,22 +360,32 @@ int exynos_get_boot_addr(u32 core_id, unsigned long *boot_addr) static const struct exynos_cpu_info exynos3250_cpu_info = { .cpu_boot_reg = exynos_common_cpu_boot_reg, + .cpu_power_down = exynos_common_cpu_power_down, + .cpu_power_up = exynos3250_cpu_power_up, }; static const struct exynos_cpu_info exynos5420_cpu_info = { .cpu_boot_reg = exynos5420_cpu_boot_reg, + .cpu_power_down = exynos5420_cpu_power_down, + .cpu_power_up = exynos_common_cpu_power_up, }; static const struct exynos_cpu_info exynos4210_rev11_cpu_info = { .cpu_boot_reg = exynos4210_rev11_cpu_boot_reg, + .cpu_power_down = exynos_common_cpu_power_down, + .cpu_power_up = exynos_common_cpu_power_up, }; static const struct exynos_cpu_info exynos4412_cpu_info = { .cpu_boot_reg = exynos4412_cpu_boot_reg, + .cpu_power_down = exynos_common_cpu_power_down, + .cpu_power_up = exynos_common_cpu_power_up, }; static const struct exynos_cpu_info exynos_common_cpu_info = { .cpu_boot_reg = exynos_common_cpu_boot_reg, + .cpu_power_down = exynos_common_cpu_power_down, + .cpu_power_up = exynos_common_cpu_power_up, }; static const struct soc_device_attribute exynos_soc_revision[] = {
Various Exynos SoC handles CPU power_up and power_down operation differently. To handle this difference until now we were using soc_is_exynosMMM helper functions, in an attempt to remove the dependency of such helper functions specific to each SoC, let's move power_{down,up} functionality as a SoC specific function pointer hooks in struct exynos_cpu_info. Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> --- arch/arm/mach-exynos/platsmp.c | 61 +++++++++++++++++++++++++++++++----------- 1 file changed, 46 insertions(+), 15 deletions(-)