diff options
Diffstat (limited to 'drivers/pinctrl/samsung/pinctrl-exynos.c')
| -rw-r--r-- | drivers/pinctrl/samsung/pinctrl-exynos.c | 68 |
1 files changed, 67 insertions, 1 deletions
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c index a263ddd94945..f49ea3d92aa1 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; } @@ -346,6 +353,25 @@ static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on) /* * irq_chip for wakeup interrupts */ +static const struct exynos_irq_chip s5pv210_wkup_irq_chip __initconst = { + .chip = { + .name = "s5pv210_wkup_irq_chip", + .irq_unmask = exynos_irq_unmask, + .irq_mask = exynos_irq_mask, + .irq_ack = exynos_irq_ack, + .irq_set_type = exynos_irq_set_type, + .irq_set_wake = exynos_wkup_irq_set_wake, + .irq_request_resources = exynos_irq_request_resources, + .irq_release_resources = exynos_irq_release_resources, + }, + .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 = { .chip = { .name = "exynos4210_wkup_irq_chip", @@ -360,6 +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 = { @@ -376,10 +404,14 @@ 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 */ static const struct of_device_id exynos_wkup_irq_ids[] = { + { .compatible = "samsung,s5pv210-wakeup-eint", + .data = &s5pv210_wkup_irq_chip }, { .compatible = "samsung,exynos4210-wakeup-eint", .data = &exynos4210_wkup_irq_chip }, { .compatible = "samsung,exynos7-wakeup-eint", @@ -542,6 +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 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) @@ -564,11 +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( |