Patchwork [U-Boot,1/2] EXYNOS5: Add function to setup set ps hold

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Submitter Rajeshwari Birje
Date Jan. 15, 2013, 10:25 a.m.
Message ID <1358245546-10035-2-git-send-email-rajeshwari.s@samsung.com>
Download mbox | patch
Permalink /patch/212067/
State Changes Requested
Delegated to: Minkyu Kang
Headers show

Comments

Rajeshwari Birje - Jan. 15, 2013, 10:25 a.m.
This patch adds a function to 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).

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
---
 arch/arm/cpu/armv7/exynos/power.c        |   10 ++++++++++
 arch/arm/include/asm/arch-exynos/power.h |    8 ++++++++
 2 files changed, 18 insertions(+), 0 deletions(-)
Simon Glass - Jan. 21, 2013, 11:29 p.m.
On Tue, Jan 15, 2013 at 2:25 AM, Rajeshwari Shinde
<rajeshwari.s@samsung.com> wrote:
> This patch adds a function to 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).
>
> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>

Acked-by: Simon Glass <sjg@chromium.org>

> ---
>  arch/arm/cpu/armv7/exynos/power.c        |   10 ++++++++++
>  arch/arm/include/asm/arch-exynos/power.h |    8 ++++++++
>  2 files changed, 18 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c
> index d4bce6d..8572cfd 100644
> --- a/arch/arm/cpu/armv7/exynos/power.c
> +++ b/arch/arm/cpu/armv7/exynos/power.c
> @@ -95,3 +95,13 @@ void set_dp_phy_ctrl(unsigned int enable)
>         if (cpu_is_exynos5())
>                 exynos5_dp_phy_control(enable);
>  }
> +
> +void power_ps_hold_setup(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);
> +}
> diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h
> index d2fdb59..85e2cd9 100644
> --- a/arch/arm/include/asm/arch-exynos/power.h
> +++ b/arch/arm/include/asm/arch-exynos/power.h
> @@ -864,4 +864,12 @@ 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 power_ps_hold_setup(void);
>  #endif
> --
> 1.7.4.4
>

Patch

diff --git a/arch/arm/cpu/armv7/exynos/power.c b/arch/arm/cpu/armv7/exynos/power.c
index d4bce6d..8572cfd 100644
--- a/arch/arm/cpu/armv7/exynos/power.c
+++ b/arch/arm/cpu/armv7/exynos/power.c
@@ -95,3 +95,13 @@  void set_dp_phy_ctrl(unsigned int enable)
 	if (cpu_is_exynos5())
 		exynos5_dp_phy_control(enable);
 }
+
+void power_ps_hold_setup(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);
+}
diff --git a/arch/arm/include/asm/arch-exynos/power.h b/arch/arm/include/asm/arch-exynos/power.h
index d2fdb59..85e2cd9 100644
--- a/arch/arm/include/asm/arch-exynos/power.h
+++ b/arch/arm/include/asm/arch-exynos/power.h
@@ -864,4 +864,12 @@  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 power_ps_hold_setup(void);
 #endif