diff options
Diffstat (limited to 'drivers/gpio/gpio-rcar.c')
| -rw-r--r-- | drivers/gpio/gpio-rcar.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index b4ca450947b..d173d56dbb8 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -49,6 +49,7 @@ struct gpio_rcar_priv { #define POSNEG 0x20 #define EDGLEVEL 0x24 #define FILONOFF 0x28 +#define BOTHEDGE 0x4c static inline u32 gpio_rcar_read(struct gpio_rcar_priv *p, int offs) { @@ -91,7 +92,8 @@ static void gpio_rcar_irq_enable(struct irq_data *d) static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p, unsigned int hwirq, bool active_high_rising_edge, - bool level_trigger) + bool level_trigger, + bool both) { unsigned long flags; @@ -108,6 +110,10 @@ static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p, /* Configure edge or level trigger in EDGLEVEL */ gpio_rcar_modify_bit(p, EDGLEVEL, hwirq, !level_trigger); + /* Select one edge or both edges in BOTHEDGE */ + if (p->config.has_both_edge_trigger) + gpio_rcar_modify_bit(p, BOTHEDGE, hwirq, both); + /* Select "Interrupt Input Mode" in IOINTSEL */ gpio_rcar_modify_bit(p, IOINTSEL, hwirq, true); @@ -127,16 +133,26 @@ static int gpio_rcar_irq_set_type(struct irq_data *d, unsigned int type) switch (type & IRQ_TYPE_SENSE_MASK) { case IRQ_TYPE_LEVEL_HIGH: - gpio_rcar_config_interrupt_input_mode(p, hwirq, true, true); + gpio_rcar_config_interrupt_input_mode(p, hwirq, true, true, + false); break; case IRQ_TYPE_LEVEL_LOW: - gpio_rcar_config_interrupt_input_mode(p, hwirq, false, true); + gpio_rcar_config_interrupt_input_mode(p, hwirq, false, true, + false); break; case IRQ_TYPE_EDGE_RISING: - gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false); + gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false, + false); break; case IRQ_TYPE_EDGE_FALLING: - gpio_rcar_config_interrupt_input_mode(p, hwirq, false, false); + gpio_rcar_config_interrupt_input_mode(p, hwirq, false, false, + false); + break; + case IRQ_TYPE_EDGE_BOTH: + if (!p->config.has_both_edge_trigger) + return -EINVAL; + gpio_rcar_config_interrupt_input_mode(p, hwirq, true, false, + true); break; default: return -EINVAL; @@ -333,7 +349,7 @@ static int gpio_rcar_probe(struct platform_device *pdev) } if (devm_request_irq(&pdev->dev, irq->start, - gpio_rcar_irq_handler, 0, name, p)) { + gpio_rcar_irq_handler, IRQF_SHARED, name, p)) { dev_err(&pdev->dev, "failed to request IRQ\n"); ret = -ENOENT; goto err1; |