diff options
Diffstat (limited to 'drivers/pinctrl/pinctrl-at91.c')
-rw-r--r-- | drivers/pinctrl/pinctrl-at91.c | 88 |
1 files changed, 74 insertions, 14 deletions
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index 75933a6aa828..4d7f531e945d 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -294,7 +294,7 @@ static void at91_dt_free_map(struct pinctrl_dev *pctldev, { } -static struct pinctrl_ops at91_pctrl_ops = { +static const struct pinctrl_ops at91_pctrl_ops = { .get_groups_count = at91_get_groups_count, .get_group_name = at91_get_group_name, .get_group_pins = at91_get_group_pins, @@ -303,7 +303,7 @@ static struct pinctrl_ops at91_pctrl_ops = { .dt_free_map = at91_dt_free_map, }; -static void __iomem * pin_to_controller(struct at91_pinctrl *info, +static void __iomem *pin_to_controller(struct at91_pinctrl *info, unsigned int bank) { return gpio_chips[bank]->regbase; @@ -501,7 +501,7 @@ static void at91_pin_dbg(const struct device *dev, const struct at91_pmx_pin *pi } } -static int pin_check_config(struct at91_pinctrl *info, const char* name, +static int pin_check_config(struct at91_pinctrl *info, const char *name, int index, const struct at91_pmx_pin *pin) { int mux; @@ -579,7 +579,7 @@ static int at91_pmx_enable(struct pinctrl_dev *pctldev, unsigned selector, pio = pin_to_controller(info, pin->bank); mask = pin_to_mask(pin->pin); at91_mux_disable_interrupt(pio, mask); - switch(pin->mux) { + switch (pin->mux) { case AT91_MUX_GPIO: at91_mux_gpio_enable(pio, mask, 1); break; @@ -696,7 +696,7 @@ static void at91_gpio_disable_free(struct pinctrl_dev *pctldev, /* Set the pin to some default state, GPIO is usually default */ } -static struct pinmux_ops at91_pmx_ops = { +static const struct pinmux_ops at91_pmx_ops = { .get_functions_count = at91_pmx_get_funcs_count, .get_function_name = at91_pmx_get_func_name, .get_function_groups = at91_pmx_get_groups, @@ -776,7 +776,7 @@ static void at91_pinconf_group_dbg_show(struct pinctrl_dev *pctldev, { } -static struct pinconf_ops at91_pinconf_ops = { +static const struct pinconf_ops at91_pinconf_ops = { .pin_config_get = at91_pinconf_get, .pin_config_set = at91_pinconf_set, .pin_config_dbg_show = at91_pinconf_dbg_show, @@ -812,7 +812,7 @@ static int at91_pinctrl_mux_mask(struct at91_pinctrl *info, { int ret = 0; int size; - const const __be32 *list; + const __be32 *list; list = of_get_property(np, "atmel,mux-mask", &size); if (!list) { @@ -846,7 +846,7 @@ static int at91_pinctrl_parse_groups(struct device_node *np, { struct at91_pmx_pin *pin; int size; - const const __be32 *list; + const __be32 *list; int i, j; dev_dbg(info->dev, "group(%d): %s\n", index, np->name); @@ -944,7 +944,7 @@ static int at91_pinctrl_probe_dt(struct platform_device *pdev, return -ENODEV; info->dev = &pdev->dev; - info->ops = (struct at91_pinctrl_mux_ops*) + info->ops = (struct at91_pinctrl_mux_ops *) of_match_device(at91_pinctrl_of_match, &pdev->dev)->data; at91_pinctrl_child_count(info, np); @@ -1002,7 +1002,7 @@ static int at91_pinctrl_probe(struct platform_device *pdev) { struct at91_pinctrl *info; struct pinctrl_pin_desc *pdesc; - int ret, i, j ,k; + int ret, i, j, k; info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); if (!info) @@ -1277,21 +1277,80 @@ static int alt_gpio_irq_type(struct irq_data *d, unsigned type) } #ifdef CONFIG_PM + +static u32 wakeups[MAX_GPIO_BANKS]; +static u32 backups[MAX_GPIO_BANKS]; + static int gpio_irq_set_wake(struct irq_data *d, unsigned state) { struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d); unsigned bank = at91_gpio->pioc_idx; + unsigned mask = 1 << d->hwirq; if (unlikely(bank >= MAX_GPIO_BANKS)) return -EINVAL; + if (state) + wakeups[bank] |= mask; + else + wakeups[bank] &= ~mask; + irq_set_irq_wake(at91_gpio->pioc_virq, state); return 0; } + +void at91_pinctrl_gpio_suspend(void) +{ + int i; + + for (i = 0; i < gpio_banks; i++) { + void __iomem *pio; + + if (!gpio_chips[i]) + continue; + + pio = gpio_chips[i]->regbase; + + backups[i] = __raw_readl(pio + PIO_IMR); + __raw_writel(backups[i], pio + PIO_IDR); + __raw_writel(wakeups[i], pio + PIO_IER); + + if (!wakeups[i]) { + clk_unprepare(gpio_chips[i]->clock); + clk_disable(gpio_chips[i]->clock); + } else { + printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", + 'A'+i, wakeups[i]); + } + } +} + +void at91_pinctrl_gpio_resume(void) +{ + int i; + + for (i = 0; i < gpio_banks; i++) { + void __iomem *pio; + + if (!gpio_chips[i]) + continue; + + pio = gpio_chips[i]->regbase; + + if (!wakeups[i]) { + if (clk_prepare(gpio_chips[i]->clock) == 0) + clk_enable(gpio_chips[i]->clock); + } + + __raw_writel(wakeups[i], pio + PIO_IDR); + __raw_writel(backups[i], pio + PIO_IER); + } +} + #else #define gpio_irq_set_wake NULL -#endif +#endif /* CONFIG_PM */ static struct irq_chip gpio_irqchip = { .name = "GPIO", @@ -1509,7 +1568,7 @@ static int at91_gpio_probe(struct platform_device *pdev) goto err; } - at91_chip->ops = (struct at91_pinctrl_mux_ops*) + at91_chip->ops = (struct at91_pinctrl_mux_ops *) of_match_device(at91_gpio_of_match, &pdev->dev)->data; at91_chip->pioc_virq = irq; at91_chip->pioc_idx = alias_idx; @@ -1546,7 +1605,8 @@ static int at91_gpio_probe(struct platform_device *pdev) chip->ngpio = ngpio; } - names = devm_kzalloc(&pdev->dev, sizeof(char*) * chip->ngpio, GFP_KERNEL); + names = devm_kzalloc(&pdev->dev, sizeof(char *) * chip->ngpio, + GFP_KERNEL); if (!names) { ret = -ENOMEM; @@ -1556,7 +1616,7 @@ static int at91_gpio_probe(struct platform_device *pdev) for (i = 0; i < chip->ngpio; i++) names[i] = kasprintf(GFP_KERNEL, "pio%c%d", alias_idx + 'A', i); - chip->names = (const char*const*)names; + chip->names = (const char *const *)names; range = &at91_chip->range; range->name = chip->label; |