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gpio: gpio-mm: 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 Diamond Systems
GPIO-MM. 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>
hifive-unleashed-5.1
William Breathitt Gray 2017-01-30 13:33:37 -05:00 committed by Linus Walleij
parent e0af4b5e24
commit 210b4bde5f
1 changed files with 14 additions and 1 deletions
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15
drivers/gpio/gpio-gpio-mm.c
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@ -230,6 +230,18 @@ static void gpiomm_gpio_set_multiple(struct gpio_chip *chip,
}
}
#define GPIOMM_NGPIO 48
static const char *gpiomm_names[GPIOMM_NGPIO] = {
"Port 1A0", "Port 1A1", "Port 1A2", "Port 1A3", "Port 1A4", "Port 1A5",
"Port 1A6", "Port 1A7", "Port 1B0", "Port 1B1", "Port 1B2", "Port 1B3",
"Port 1B4", "Port 1B5", "Port 1B6", "Port 1B7", "Port 1C0", "Port 1C1",
"Port 1C2", "Port 1C3", "Port 1C4", "Port 1C5", "Port 1C6", "Port 1C7",
"Port 2A0", "Port 2A1", "Port 2A2", "Port 2A3", "Port 2A4", "Port 2A5",
"Port 2A6", "Port 2A7", "Port 2B0", "Port 2B1", "Port 2B2", "Port 2B3",
"Port 2B4", "Port 2B5", "Port 2B6", "Port 2B7", "Port 2C0", "Port 2C1",
"Port 2C2", "Port 2C3", "Port 2C4", "Port 2C5", "Port 2C6", "Port 2C7",
};
static int gpiomm_probe(struct device *dev, unsigned int id)
{
struct gpiomm_gpio *gpiommgpio;
@ -250,7 +262,8 @@ static int gpiomm_probe(struct device *dev, unsigned int id)
gpiommgpio->chip.parent = dev;
gpiommgpio->chip.owner = THIS_MODULE;
gpiommgpio->chip.base = -1;
gpiommgpio->chip.ngpio = 48;
gpiommgpio->chip.ngpio = GPIOMM_NGPIO;
gpiommgpio->chip.names = gpiomm_names;
gpiommgpio->chip.get_direction = gpiomm_gpio_get_direction;
gpiommgpio->chip.direction_input = gpiomm_gpio_direction_input;
gpiommgpio->chip.direction_output = gpiomm_gpio_direction_output;