This patch adds APIs to get power reset status and exit the wakeup condition for both exynos5 and exynos4
Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com --- Changes in V2: - Expanded the comments for get_reset_status function declaration. arch/arm/cpu/armv7/exynos/power.c | 50 ++++++++++++++++++++++++++++++ arch/arm/include/asm/arch-exynos/power.h | 12 +++++++ 2 files changed, 62 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c index 6375a81..5d3bda2 100644 --- a/arch/arm/cpu/armv7/exynos/power.c +++ b/arch/arm/cpu/armv7/exynos/power.c @@ -140,3 +140,53 @@ void set_hw_thermal_trip(void) setbits_le32(&power->ps_hold_control, POWER_ENABLE_HW_TRIP); } } + +static uint32_t exynos5_get_reset_status(void) +{ + struct exynos5_power *power = + (struct exynos5_power *)samsung_get_base_power(); + + return power->inform1; +} + +static uint32_t exynos4_get_reset_status(void) +{ + struct exynos4_power *power = + (struct exynos4_power *)samsung_get_base_power(); + + return power->inform1; +} + +uint32_t get_reset_status(void) +{ + if (cpu_is_exynos5()) + return exynos5_get_reset_status(); + else + return exynos4_get_reset_status(); +} + +static void exynos5_power_exit_wakeup(void) +{ + struct exynos5_power *power = + (struct exynos5_power *)samsung_get_base_power(); + typedef void (*resume_func)(void); + + ((resume_func)power->inform0)(); +} + +static void exynos4_power_exit_wakeup(void) +{ + struct exynos4_power *power = + (struct exynos4_power *)samsung_get_base_power(); + typedef void (*resume_func)(void); + + ((resume_func)power->inform0)(); +} + +void power_exit_wakeup(void) +{ + if (cpu_is_exynos5()) + exynos5_power_exit_wakeup(); + else + exynos4_power_exit_wakeup(); +} diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h index 3549667..b8db663 100644 --- a/arch/arm/include/asm/arch-exynos/power.h +++ b/arch/arm/include/asm/arch-exynos/power.h @@ -888,4 +888,16 @@ void set_ps_hold_ctrl(void); * source as XXTI */ void set_xclkout(void); + +/* + * Read inform1 to get the reset status. + * @return: the value can be either S5P_CHECK_SLEEP or + * S5P_CHECK_DIDLE or S5P_CHECK_LPA as stored in inform1 + * if none of these then its normal booting. + */ +uint32_t get_reset_status(void); + + +/* Read the resume function and call it */ +void power_exit_wakeup(void); #endif