diff options
| -rw-r--r-- | drivers/pinctrl/samsung/pinctrl-exynos.c | 50 | ||||
| -rw-r--r-- | drivers/pinctrl/samsung/pinctrl-samsung.h | 3 | ||||
| -rw-r--r-- | include/linux/soc/samsung/exynos-regs-pmu.h | 2 |
3 files changed, 54 insertions, 1 deletions
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index 29d86d704b0c..40ef14956876 100644 --- a/drivers/pinctrl/samsung/pinctrl-exynos.c +++ b/drivers/pinctrl/samsung/pinctrl-exynos.c @@ -25,6 +25,7 @@ #include <linux/regmap.h> #include <linux/err.h> #include <linux/soc/samsung/exynos-pmu.h> +#include <linux/soc/samsung/exynos-regs-pmu.h> #include <dt-bindings/pinctrl/samsung.h> @@ -37,6 +38,8 @@ struct exynos_irq_chip { u32 eint_con; u32 eint_mask; u32 eint_pend; + u32 eint_wake_mask_value; + u32 eint_wake_mask_reg; }; static inline struct exynos_irq_chip *to_exynos_irq_chip(struct irq_chip *chip) @@ -215,6 +218,7 @@ static struct exynos_irq_chip exynos_gpio_irq_chip = { .eint_con = EXYNOS_GPIO_ECON_OFFSET, .eint_mask = EXYNOS_GPIO_EMASK_OFFSET, .eint_pend = EXYNOS_GPIO_EPEND_OFFSET, + /* eint_wake_mask_value not used */ }; static int exynos_eint_irq_map(struct irq_domain *h, unsigned int virq, @@ -330,6 +334,8 @@ u32 exynos_get_eint_wake_mask(void) static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on) { + struct irq_chip *chip = irq_data_get_irq_chip(irqd); + struct exynos_irq_chip *our_chip = to_exynos_irq_chip(chip); struct samsung_pin_bank *bank = irq_data_get_irq_chip_data(irqd); unsigned long bit = 1UL << (2 * bank->eint_offset + irqd->hwirq); @@ -339,6 +345,7 @@ static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on) exynos_eint_wake_mask |= bit; else exynos_eint_wake_mask &= ~bit; + our_chip->eint_wake_mask_value = exynos_eint_wake_mask; return 0; } @@ -360,6 +367,9 @@ static const struct exynos_irq_chip s5pv210_wkup_irq_chip __initconst = { .eint_con = EXYNOS_WKUP_ECON_OFFSET, .eint_mask = EXYNOS_WKUP_EMASK_OFFSET, .eint_pend = EXYNOS_WKUP_EPEND_OFFSET, + .eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED, + /* Only difference with exynos4210_wkup_irq_chip: */ + .eint_wake_mask_reg = S5PV210_EINT_WAKEUP_MASK, }; static const struct exynos_irq_chip exynos4210_wkup_irq_chip __initconst = { @@ -376,6 +386,8 @@ static const struct exynos_irq_chip exynos4210_wkup_irq_chip __initconst = { .eint_con = EXYNOS_WKUP_ECON_OFFSET, .eint_mask = EXYNOS_WKUP_EMASK_OFFSET, .eint_pend = EXYNOS_WKUP_EPEND_OFFSET, + .eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED, + .eint_wake_mask_reg = EXYNOS_EINT_WAKEUP_MASK, }; static const struct exynos_irq_chip exynos7_wkup_irq_chip __initconst = { @@ -392,6 +404,8 @@ static const struct exynos_irq_chip exynos7_wkup_irq_chip __initconst = { .eint_con = EXYNOS7_WKUP_ECON_OFFSET, .eint_mask = EXYNOS7_WKUP_EMASK_OFFSET, .eint_pend = EXYNOS7_WKUP_EPEND_OFFSET, + .eint_wake_mask_value = EXYNOS_EINT_WAKEUP_MASK_DISABLED, + .eint_wake_mask_reg = EXYNOS5433_EINT_WAKEUP_MASK, }; /* list of external wakeup controllers supported */ @@ -560,6 +574,27 @@ int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d) return 0; } +static void +exynos_pinctrl_set_eint_wakeup_mask(struct samsung_pinctrl_drv_data *drvdata, + struct exynos_irq_chip *irq_chip) +{ + struct regmap *pmu_regs; + + if (!drvdata->retention_ctrl || !drvdata->retention_ctrl->priv) { + dev_warn(drvdata->dev, + "No retention data configured bank with external wakeup interrupt. Wake-up mask will not be set.\n"); + return; + } + + pmu_regs = drvdata->retention_ctrl->priv; + dev_info(drvdata->dev, + "Setting external wakeup interrupt wakeup mask: 0x%x\n", + irq_chip->eint_wake_mask_value); + + regmap_write(pmu_regs, irq_chip->eint_wake_mask_reg, + irq_chip->eint_wake_mask_value); +} + static void exynos_pinctrl_suspend_bank( struct samsung_pinctrl_drv_data *drvdata, struct samsung_pin_bank *bank) @@ -582,11 +617,24 @@ static void exynos_pinctrl_suspend_bank( void exynos_pinctrl_suspend(struct samsung_pinctrl_drv_data *drvdata) { struct samsung_pin_bank *bank = drvdata->pin_banks; + struct exynos_irq_chip *irq_chip = NULL; int i; - for (i = 0; i < drvdata->nr_banks; ++i, ++bank) + for (i = 0; i < drvdata->nr_banks; ++i, ++bank) { if (bank->eint_type == EINT_TYPE_GPIO) exynos_pinctrl_suspend_bank(drvdata, bank); + else if (bank->eint_type == EINT_TYPE_WKUP) { + if (!irq_chip) { + irq_chip = bank->irq_chip; + exynos_pinctrl_set_eint_wakeup_mask(drvdata, + irq_chip); + } else if (bank->irq_chip != irq_chip) { + dev_warn(drvdata->dev, + "More than one external wakeup interrupt chip configured (bank: %s). This is not supported by hardware nor by driver.\n", + bank->name); + } + } + } } static void exynos_pinctrl_resume_bank( diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.h b/drivers/pinctrl/samsung/pinctrl-samsung.h index aac16cc8362a..e571bbd7139b 100644 --- a/drivers/pinctrl/samsung/pinctrl-samsung.h +++ b/drivers/pinctrl/samsung/pinctrl-samsung.h @@ -227,6 +227,9 @@ struct samsung_retention_data { * device suspend, see samsung_pinctrl_suspend() * @resume: platform specific resume callback, executed during pin controller * device suspend, see samsung_pinctrl_resume() + * + * External wakeup interrupts must define at least eint_wkup_init, + * retention_data and suspend in order for proper suspend/resume to work. */ struct samsung_pin_ctrl { const struct samsung_pin_bank_data *pin_banks; diff --git a/include/linux/soc/samsung/exynos-regs-pmu.h b/include/linux/soc/samsung/exynos-regs-pmu.h index eb0d240df7a7..5addaf5ccbce 100644 --- a/include/linux/soc/samsung/exynos-regs-pmu.h +++ b/include/linux/soc/samsung/exynos-regs-pmu.h @@ -42,6 +42,8 @@ #define EXYNOS_SWRESET 0x0400 #define S5P_WAKEUP_STAT 0x0600 +/* Value for EXYNOS_EINT_WAKEUP_MASK disabling all external wakeup interrupts */ +#define EXYNOS_EINT_WAKEUP_MASK_DISABLED 0xffffffff #define EXYNOS_EINT_WAKEUP_MASK 0x0604 #define S5P_WAKEUP_MASK 0x0608 #define S5P_WAKEUP_MASK2 0x0614 |