x86/platform/geode: Convert alix LED to GPIO machine descriptor

Look up the LED from a GPIO machine descriptor table. The Geode LEDs
should be on the CS5535 companion chip.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lkml.kernel.org/r/20201124085339.6181-3-linus.walleij@linaro.org

arch/x86/platform/geode/alix.c

@@ -22,6 +22,7 @@
 #include <linux/platform_device.h>
 #include <linux/input.h>
 #include <linux/gpio_keys.h>
+#include <linux/gpio/machine.h>
 #include <linux/dmi.h>
 
 #include <asm/geode.h>
@@ -69,21 +70,15 @@ static struct platform_device alix_buttons_dev = {
 static struct gpio_led alix_leds[] = {
 	{
 		.name = "alix:1",
-		.gpio = 6,
 		.default_trigger = "default-on",
-		.active_low = 1,
 	},
 	{
 		.name = "alix:2",
-		.gpio = 25,
 		.default_trigger = "default-off",
-		.active_low = 1,
 	},
 	{
 		.name = "alix:3",
-		.gpio = 27,
 		.default_trigger = "default-off",
-		.active_low = 1,
 	},
 };
 
@@ -92,6 +87,17 @@ static struct gpio_led_platform_data alix_leds_data = {
 	.leds = alix_leds,
 };
 
+static struct gpiod_lookup_table alix_leds_gpio_table = {
+	.dev_id = "leds-gpio",
+	.table = {
+		/* The Geode GPIOs should be on the CS5535 companion chip */
+		GPIO_LOOKUP_IDX("cs5535-gpio", 6, NULL, 0, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("cs5535-gpio", 25, NULL, 1, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("cs5535-gpio", 27, NULL, 2, GPIO_ACTIVE_LOW),
+		{ }
+	},
+};
+
 static struct platform_device alix_leds_dev = {
 	.name = "leds-gpio",
 	.id = -1,
@@ -106,6 +112,7 @@ static struct platform_device *alix_devs[] __initdata = {
 static void __init register_alix(void)
 {
 	/* Setup LED control through leds-gpio driver */
+	gpiod_add_lookup_table(&alix_leds_gpio_table);
 	platform_add_devices(alix_devs, ARRAY_SIZE(alix_devs));
 }