This patch adds APIs to get power reset status and exit the wakeup condition for
both exynos5 and exynos4
Signed-off-by: Rajeshwari Shinde <rajeshwar...@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
--
1.7.4.4
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