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watchdog: mtx-1: Convert to use GPIO descriptor

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This converts the MTX-1 driver to grab a GPIO descriptor
associated with the device instead of using a resource with
a global GPIO number. Augment the driver and the boardfile.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Paul Burton <paul.burton@mips.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Linus Walleij
2018-12-22 11:12:31 +01:00
committed by Wim Van Sebroeck
parent 22ec9bb1cb
commit d2b911db8b
2 changed files with 18 additions and 19 deletions
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18
arch/mips/alchemy/board-mtx1.c
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@@ -24,6 +24,7 @@
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/gpio/machine.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/mtd/partitions.h>
@@ -130,20 +131,18 @@ static struct platform_device mtx1_button = {
}
};
static struct resource mtx1_wdt_res[] = {
[0] = {
.start = 215,
.end = 215,
.name = "mtx1-wdt-gpio",
.flags = IORESOURCE_IRQ,
}
static struct gpiod_lookup_table mtx1_wdt_gpio_table = {
.dev_id = "mtx1-wdt.0",
.table = {
/* Global number 215 is offset 15 on Alchemy GPIO 2 */
GPIO_LOOKUP("alchemy-gpio2", 15, NULL, GPIO_ACTIVE_HIGH),
{ },
},
};
static struct platform_device mtx1_wdt = {
.name = "mtx1-wdt",
.id = 0,
.num_resources = ARRAY_SIZE(mtx1_wdt_res),
.resource = mtx1_wdt_res,
};
static const struct gpio_led default_leds[] = {
@@ -310,6 +309,7 @@ static int __init mtx1_register_devices(void)
}
gpio_direction_input(mtx1_gpio_button[0].gpio);
out:
gpiod_add_lookup_table(&mtx1_wdt_gpio_table);
return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
}
arch_initcall(mtx1_register_devices);