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gpio: 104-idi-48: 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 ACCES 104-IDI-48.
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 <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
William Breathitt Gray 2017-01-30 13:33:11 -05:00 committed by Linus Walleij
parent 7bdba73eff
commit a71dc2537a
1 changed files with 14 additions and 1 deletions
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15
drivers/gpio/gpio-104-idi-48.c
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@ -217,6 +217,18 @@ static irqreturn_t idi_48_irq_handler(int irq, void *dev_id)
return IRQ_HANDLED; return IRQ_HANDLED;
} }
#define IDI48_NGPIO 48
static const char *idi48_names[IDI48_NGPIO] = {
"Bit 0 A", "Bit 1 A", "Bit 2 A", "Bit 3 A", "Bit 4 A", "Bit 5 A",
"Bit 6 A", "Bit 7 A", "Bit 8 A", "Bit 9 A", "Bit 10 A", "Bit 11 A",
"Bit 12 A", "Bit 13 A", "Bit 14 A", "Bit 15 A", "Bit 16 A", "Bit 17 A",
"Bit 18 A", "Bit 19 A", "Bit 20 A", "Bit 21 A", "Bit 22 A", "Bit 23 A",
"Bit 0 B", "Bit 1 B", "Bit 2 B", "Bit 3 B", "Bit 4 B", "Bit 5 B",
"Bit 6 B", "Bit 7 B", "Bit 8 B", "Bit 9 B", "Bit 10 B", "Bit 11 B",
"Bit 12 B", "Bit 13 B", "Bit 14 B", "Bit 15 B", "Bit 16 B", "Bit 17 B",
"Bit 18 B", "Bit 19 B", "Bit 20 B", "Bit 21 B", "Bit 22 B", "Bit 23 B"
};
static int idi_48_probe(struct device *dev, unsigned int id) static int idi_48_probe(struct device *dev, unsigned int id)
{ {
struct idi_48_gpio *idi48gpio; struct idi_48_gpio *idi48gpio;
@ -237,7 +249,8 @@ static int idi_48_probe(struct device *dev, unsigned int id)
idi48gpio->chip.parent = dev; idi48gpio->chip.parent = dev;
idi48gpio->chip.owner = THIS_MODULE; idi48gpio->chip.owner = THIS_MODULE;
idi48gpio->chip.base = -1; idi48gpio->chip.base = -1;
idi48gpio->chip.ngpio = 48; idi48gpio->chip.ngpio = IDI48_NGPIO;
idi48gpio->chip.names = idi48_names;
idi48gpio->chip.get_direction = idi_48_gpio_get_direction; idi48gpio->chip.get_direction = idi_48_gpio_get_direction;
idi48gpio->chip.direction_input = idi_48_gpio_direction_input; idi48gpio->chip.direction_input = idi_48_gpio_direction_input;
idi48gpio->chip.get = idi_48_gpio_get; idi48gpio->chip.get = idi_48_gpio_get;