From 51ff1eda6f788fc76666d275a87a7c7aff32baa8 Mon Sep 17 00:00:00 2001 From: Rajeshwari Shinde Date: Tue, 12 Feb 2013 20:40:01 +0000 Subject: EXYNOS5: Add function to setup set ps hold This patch adds a function to set ps_hold data driving value high. This enables the machine to stay powered on even after the initial power-on condition goes away(e.g. power button). Acked-by: Simon Glass Signed-off-by: Rajeshwari Shinde Signed-off-by: Minkyu Kang --- arch/arm/cpu/armv7/exynos/power.c | 16 ++++++++++++++++ arch/arm/include/asm/arch-exynos/power.h | 9 +++++++++ 2 files changed, 25 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c index d4bce6d4dd..400c8bcfc5 100644 --- a/arch/arm/cpu/armv7/exynos/power.c +++ b/arch/arm/cpu/armv7/exynos/power.c @@ -95,3 +95,19 @@ void set_dp_phy_ctrl(unsigned int enable) if (cpu_is_exynos5()) exynos5_dp_phy_control(enable); } + +static void exynos5_set_ps_hold_ctrl(void) +{ + struct exynos5_power *power = + (struct exynos5_power *)samsung_get_base_power(); + + /* Set PS-Hold high */ + setbits_le32(&power->ps_hold_control, + EXYNOS_PS_HOLD_CONTROL_DATA_HIGH); +} + +void set_ps_hold_ctrl(void) +{ + if (cpu_is_exynos5()) + exynos5_set_ps_hold_ctrl(); +} diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h index d2fdb59817..f2f73faa75 100644 --- a/arch/arm/include/asm/arch-exynos/power.h +++ b/arch/arm/include/asm/arch-exynos/power.h @@ -864,4 +864,13 @@ void set_dp_phy_ctrl(unsigned int enable); #define EXYNOS_DP_PHY_ENABLE (1 << 0) +#define EXYNOS_PS_HOLD_CONTROL_DATA_HIGH (1 << 8) + +/* + * Set ps_hold data driving value high + * This enables the machine to stay powered on + * after the initial power-on condition goes away + * (e.g. power button). + */ +void set_ps_hold_ctrl(void); #endif -- cgit