diff options
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/pinctrl-nomadik.c | 105 |
1 files changed, 57 insertions, 48 deletions
diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c index 7d5484fee5f3..8ed7917d513d 100644 --- a/drivers/pinctrl/pinctrl-nomadik.c +++ b/drivers/pinctrl/pinctrl-nomadik.c @@ -943,14 +943,16 @@ static int nmk_gpio_to_irq(struct gpio_chip *chip, unsigned offset) #include <linux/seq_file.h> -static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) +static void nmk_gpio_dbg_show_one(struct seq_file *s, struct gpio_chip *chip, + unsigned offset, unsigned gpio) { - int mode; - unsigned i; - unsigned gpio = chip->base; - int is_out; + const char *label = gpiochip_is_requested(chip, offset); struct nmk_gpio_chip *nmk_chip = container_of(chip, struct nmk_gpio_chip, chip); + int mode; + bool is_out; + bool pull; + u32 bit = 1 << offset; const char *modes[] = { [NMK_GPIO_ALT_GPIO] = "gpio", [NMK_GPIO_ALT_A] = "altA", @@ -959,56 +961,63 @@ static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) }; clk_enable(nmk_chip->clk); - - for (i = 0; i < chip->ngpio; i++, gpio++) { - const char *label = gpiochip_is_requested(chip, i); - bool pull; - u32 bit = 1 << i; - - is_out = readl(nmk_chip->addr + NMK_GPIO_DIR) & bit; - pull = !(readl(nmk_chip->addr + NMK_GPIO_PDIS) & bit); - mode = nmk_gpio_get_mode(gpio); - seq_printf(s, " gpio-%-3d (%-20.20s) %s %s %s %s", - gpio, label ?: "(none)", - is_out ? "out" : "in ", - chip->get - ? (chip->get(chip, i) ? "hi" : "lo") - : "? ", - (mode < 0) ? "unknown" : modes[mode], - pull ? "pull" : "none"); - - if (label && !is_out) { - int irq = gpio_to_irq(gpio); - struct irq_desc *desc = irq_to_desc(irq); - - /* This races with request_irq(), set_irq_type(), - * and set_irq_wake() ... but those are "rare". - */ - if (irq >= 0 && desc->action) { - char *trigger; - u32 bitmask = nmk_gpio_get_bitmask(gpio); - - if (nmk_chip->edge_rising & bitmask) - trigger = "edge-rising"; - else if (nmk_chip->edge_falling & bitmask) - trigger = "edge-falling"; - else - trigger = "edge-undefined"; - - seq_printf(s, " irq-%d %s%s", - irq, trigger, - irqd_is_wakeup_set(&desc->irq_data) - ? " wakeup" : ""); - } + is_out = !!(readl(nmk_chip->addr + NMK_GPIO_DIR) & bit); + pull = !(readl(nmk_chip->addr + NMK_GPIO_PDIS) & bit); + mode = nmk_gpio_get_mode(gpio); + + seq_printf(s, " gpio-%-3d (%-20.20s) %s %s %s %s", + gpio, label ?: "(none)", + is_out ? "out" : "in ", + chip->get + ? (chip->get(chip, offset) ? "hi" : "lo") + : "? ", + (mode < 0) ? "unknown" : modes[mode], + pull ? "pull" : "none"); + + if (label && !is_out) { + int irq = gpio_to_irq(gpio); + struct irq_desc *desc = irq_to_desc(irq); + + /* This races with request_irq(), set_irq_type(), + * and set_irq_wake() ... but those are "rare". + */ + if (irq >= 0 && desc->action) { + char *trigger; + u32 bitmask = nmk_gpio_get_bitmask(gpio); + + if (nmk_chip->edge_rising & bitmask) + trigger = "edge-rising"; + else if (nmk_chip->edge_falling & bitmask) + trigger = "edge-falling"; + else + trigger = "edge-undefined"; + + seq_printf(s, " irq-%d %s%s", + irq, trigger, + irqd_is_wakeup_set(&desc->irq_data) + ? " wakeup" : ""); } + } + clk_disable(nmk_chip->clk); +} + +static void nmk_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) +{ + unsigned i; + unsigned gpio = chip->base; + for (i = 0; i < chip->ngpio; i++, gpio++) { + nmk_gpio_dbg_show_one(s, chip, i, gpio); seq_printf(s, "\n"); } - - clk_disable(nmk_chip->clk); } #else +static inline void nmk_gpio_dbg_show_one(struct seq_file *s, + struct gpio_chip *chip, + unsigned offset, unsigned gpio) +{ +} #define nmk_gpio_dbg_show NULL #endif |