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EXYNOS5: Add function to setup set ps hold

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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 <sjg@chromium.org>
Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Rajeshwari Shinde 2013-02-12 20:40:01 +00:00 committed by Minkyu Kang
parent 9f024f62e4
commit 51ff1eda6f
2 changed files with 25 additions and 0 deletions
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16
arch/arm/cpu/armv7/exynos/power.c
View File

@ -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();
}

9
arch/arm/include/asm/arch-exynos/power.h
View File

@ -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