From 7d816e54b847b1e9e7357bf890a03a00f2025381 Mon Sep 17 00:00:00 2001 From: William Breathitt Gray Date: Mon, 30 Jan 2017 12:16:04 -0500 Subject: iio: stx104: Add support for GPIO names This patch sets the gpio_chip names option with an array of GPIO line names that match the manual documentation for the Apex Embedded Systems STX104. This should make it easier for users to identify which GPIO line corresponds to a respective GPIO pin on the device. Signed-off-by: William Breathitt Gray Reviewed-by: Linus Walleij Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stx104.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/stx104.c b/drivers/iio/adc/stx104.c index fcfad51..40c05df 100644 --- a/drivers/iio/adc/stx104.c +++ b/drivers/iio/adc/stx104.c @@ -256,6 +256,11 @@ static void stx104_gpio_set(struct gpio_chip *chip, unsigned int offset, spin_unlock_irqrestore(&stx104gpio->lock, flags); } +#define STX104_NGPIO 8 +static const char *stx104_names[STX104_NGPIO] = { + "DIN0", "DIN1", "DIN2", "DIN3", "DOUT0", "DOUT1", "DOUT2", "DOUT3" +}; + static int stx104_probe(struct device *dev, unsigned int id) { struct iio_dev *indio_dev; @@ -309,7 +314,8 @@ static int stx104_probe(struct device *dev, unsigned int id) stx104gpio->chip.parent = dev; stx104gpio->chip.owner = THIS_MODULE; stx104gpio->chip.base = -1; - stx104gpio->chip.ngpio = 8; + stx104gpio->chip.ngpio = STX104_NGPIO; + stx104gpio->chip.names = stx104_names; stx104gpio->chip.get_direction = stx104_gpio_get_direction; stx104gpio->chip.direction_input = stx104_gpio_direction_input; stx104gpio->chip.direction_output = stx104_gpio_direction_output; -- cgit v1.1