diff options
| author | Pramod Gurav <pramod.gurav@smartplayin.com> | 2014-08-29 20:00:59 +0530 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-09-02 14:34:11 +0200 |
| commit | 327455817a92522e669d2d11367e42af5956a8ed (patch) | |
| tree | f76a087d3d76484521d88020cd3973c056b5380d /drivers/pinctrl/qcom/pinctrl-msm.c | |
| parent | 79c62cdd0760fb43acf680c89dc508b41a60d222 (diff) | |
pinctrl: qcom: Add support for reset for apq8064
This patch adds support for reset functions to reboot the boards
with soc apq8064.
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: "Ivan T. Ivanov" <iivanov@mm-sol.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Andy Gross <agross@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/qcom/pinctrl-msm.c')
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-msm.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index 9175bbc298c7..80a64cad907d 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -12,6 +12,7 @@ * GNU General Public License for more details. */ +#include <linux/delay.h> #include <linux/err.h> #include <linux/io.h> #include <linux/module.h> @@ -27,12 +28,15 @@ #include <linux/interrupt.h> #include <linux/spinlock.h> +#include <asm/system_misc.h> + #include "../core.h" #include "../pinconf.h" #include "pinctrl-msm.h" #include "../pinctrl-utils.h" #define MAX_NR_GPIO 300 +#define PS_HOLD_OFFSET 0x820 /** * struct msm_pinctrl - state for a pinctrl-msm device @@ -850,6 +854,30 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl) return 0; } +#ifdef CONFIG_ARM +static void __iomem *msm_ps_hold; + +static void msm_reset(enum reboot_mode reboot_mode, const char *cmd) +{ + writel(0, msm_ps_hold); + mdelay(10000); +} + +static void msm_pinctrl_setup_pm_reset(struct msm_pinctrl *pctrl) +{ + int i = 0; + const struct msm_function *func = pctrl->soc->functions; + + for (; i <= pctrl->soc->nfunctions; i++) + if (!strcmp(func[i].name, "ps_hold")) { + msm_ps_hold = pctrl->regs + PS_HOLD_OFFSET; + arm_pm_restart = msm_reset; + } +} +#else +static void msm_pinctrl_setup_pm_reset(const struct msm_pinctrl *pctrl) {} +#endif + int msm_pinctrl_probe(struct platform_device *pdev, const struct msm_pinctrl_soc_data *soc_data) { @@ -873,6 +901,8 @@ int msm_pinctrl_probe(struct platform_device *pdev, if (IS_ERR(pctrl->regs)) return PTR_ERR(pctrl->regs); + msm_pinctrl_setup_pm_reset(pctrl); + pctrl->irq = platform_get_irq(pdev, 0); if (pctrl->irq < 0) { dev_err(&pdev->dev, "No interrupt defined for msmgpio\n"); |