diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/qcom/pinctrl-msm.c | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index d5ed1272b928..d30dddd21323 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -27,8 +27,7 @@ #include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/spinlock.h> - -#include <asm/system_misc.h> +#include <linux/reboot.h> #include "../core.h" #include "../pinconf.h" @@ -43,6 +42,7 @@ * @dev: device handle. * @pctrl: pinctrl handle. * @chip: gpiochip handle. + * @restart_nb: restart notifier block. * @irq: parent irq for the TLMM irq_chip. * @lock: Spinlock to protect register resources as well * as msm_pinctrl data structures. @@ -56,6 +56,7 @@ struct msm_pinctrl { struct device *dev; struct pinctrl_dev *pctrl; struct gpio_chip chip; + struct notifier_block restart_nb; int irq; spinlock_t lock; @@ -852,13 +853,14 @@ 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) +static int msm_ps_hold_restart(struct notifier_block *nb, unsigned long action, + void *data) { - writel(0, msm_ps_hold); - mdelay(10000); + struct msm_pinctrl *pctrl = container_of(nb, struct msm_pinctrl, restart_nb); + + writel(0, pctrl->regs + PS_HOLD_OFFSET); + mdelay(1000); + return NOTIFY_DONE; } static void msm_pinctrl_setup_pm_reset(struct msm_pinctrl *pctrl) @@ -868,13 +870,14 @@ static void msm_pinctrl_setup_pm_reset(struct msm_pinctrl *pctrl) 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; + pctrl->restart_nb.notifier_call = msm_ps_hold_restart; + pctrl->restart_nb.priority = 128; + if (register_restart_handler(&pctrl->restart_nb)) + dev_err(pctrl->dev, + "failed to setup restart handler.\n"); + break; } } -#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) @@ -943,6 +946,8 @@ int msm_pinctrl_remove(struct platform_device *pdev) pinctrl_unregister(pctrl->pctrl); + unregister_restart_handler(&pctrl->restart_nb); + return 0; } EXPORT_SYMBOL(msm_pinctrl_remove); |
