Re: [U-Boot] [PATCH 1/4] EXYNOS: Add API for power reset and exit wakeup

Hi Rajeshwari,

On Wed, Apr 24, 2013 at 11:57 PM, Rajeshwari Shinde rajeshwari.s@samsung.com wrote:

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

arch/arm/cpu/armv7/exynos/power.c | 50 ++++++++++++++++++++++++++++++ arch/arm/include/asm/arch-exynos/power.h | 10 ++++++ 2 files changed, 60 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..98e1144 100644 --- a/arch/arm/include/asm/arch-exynos/power.h +++ b/arch/arm/include/asm/arch-exynos/power.h @@ -888,4 +888,14 @@ void set_ps_hold_ctrl(void);

• source as XXTI

*/ void set_xclkout(void);

+/*

• • Read inform1 to get the reset status

Please can you expand this comment? What values are returned? Do you have an enum that can be used to decode the values?

• */

+uint32_t get_reset_status(void);

+/*

• • Read the resume function and call it
• */

+void power_exit_wakeup(void);

#endif

1.7.4.4

Regards, Simon