diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/gpio/gpiolib.c | 12 |
2 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index ed37e59..12d417a 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -1187,6 +1187,8 @@ config GPIO_MCP23S08 tristate "Microchip MCP23xxx I/O expander" depends on OF_GPIO select GPIOLIB_IRQCHIP + select REGMAP_I2C if I2C + select REGMAP if SPI_MASTER help SPI/I2C driver for Microchip MCP23S08/MCP23S17/MCP23008/MCP23017 I/O expanders. diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 9215931..063d176 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -703,23 +703,23 @@ static irqreturn_t lineevent_irq_thread(int irq, void *p) { struct lineevent_state *le = p; struct gpioevent_data ge; - int ret; + int ret, level; ge.timestamp = ktime_get_real_ns(); + level = gpiod_get_value_cansleep(le->desc); - if (le->eflags & GPIOEVENT_REQUEST_BOTH_EDGES) { - int level = gpiod_get_value_cansleep(le->desc); - + if (le->eflags & GPIOEVENT_REQUEST_RISING_EDGE + && le->eflags & GPIOEVENT_REQUEST_FALLING_EDGE) { if (level) /* Emit low-to-high event */ ge.id = GPIOEVENT_EVENT_RISING_EDGE; else /* Emit high-to-low event */ ge.id = GPIOEVENT_EVENT_FALLING_EDGE; - } else if (le->eflags & GPIOEVENT_REQUEST_RISING_EDGE) { + } else if (le->eflags & GPIOEVENT_REQUEST_RISING_EDGE && level) { /* Emit low-to-high event */ ge.id = GPIOEVENT_EVENT_RISING_EDGE; - } else if (le->eflags & GPIOEVENT_REQUEST_FALLING_EDGE) { + } else if (le->eflags & GPIOEVENT_REQUEST_FALLING_EDGE && !level) { /* Emit high-to-low event */ ge.id = GPIOEVENT_EVENT_FALLING_EDGE; } else { |