[PATCH] ARM: s3c: use gpio lookup table for LEDs

[PATCH] ARM: s3c: use gpio lookup table for LEDs

[Arnd Bergmann]

From: Arnd Bergmann <arnd@arndb.de>

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/mach-s3c/mach-crag6410.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/arch/arm/mach-s3c/mach-crag6410.c b/arch/arm/mach-s3c/mach-crag6410.c
index 7def8824bbc5..57176719d8a6 100644
--- a/arch/arm/mach-s3c/mach-crag6410.c
+++ b/arch/arm/mach-s3c/mach-crag6410.c
@@ -779,46 +779,53 @@ static struct s3c_sdhci_platdata crag6410_hsmmc0_pdata = {
 static const struct gpio_led gpio_leds[] = {
 	{
 		.name = "d13:green:",
-		.gpio = MMGPIO_GPIO_BASE + 0,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 	{
 		.name = "d14:green:",
-		.gpio = MMGPIO_GPIO_BASE + 1,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 	{
 		.name = "d15:green:",
-		.gpio = MMGPIO_GPIO_BASE + 2,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 	{
 		.name = "d16:green:",
-		.gpio = MMGPIO_GPIO_BASE + 3,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 	{
 		.name = "d17:green:",
-		.gpio = MMGPIO_GPIO_BASE + 4,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 	{
 		.name = "d18:green:",
-		.gpio = MMGPIO_GPIO_BASE + 5,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 	{
 		.name = "d19:green:",
-		.gpio = MMGPIO_GPIO_BASE + 6,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 	{
 		.name = "d20:green:",
-		.gpio = MMGPIO_GPIO_BASE + 7,
 		.default_state = LEDS_GPIO_DEFSTATE_ON,
 	},
 };
 
+static struct gpiod_lookup_table crag_leds_table = {
+	.dev_id = "leds-gpio",
+	.table = {
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 0, "cs", 0, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 1, "cs", 1, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 2, "cs", 2, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 3, "cs", 3, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 4, "cs", 4, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 5, "cs", 5, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 6, "cs", 6, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("basic-mmio-gpio", 7, "cs", 7, GPIO_ACTIVE_LOW),
+		{ },
+	},
+};
+
 static const struct gpio_led_platform_data gpio_leds_pdata = {
 	.leds = gpio_leds,
 	.num_leds = ARRAY_SIZE(gpio_leds),
@@ -875,6 +882,7 @@ static void __init crag6410_machine_init(void)
 	platform_add_devices(crag6410_devices, ARRAY_SIZE(crag6410_devices));
 	platform_device_register_full(&crag6410_mmgpio_devinfo);
 
+	gpiod_add_lookup_table(&crag_leds_table);
 	gpio_led_register_device(-1, &gpio_leds_pdata);
 
 	regulator_has_full_constraints();
-- 
2.39.5

Re: [PATCH] ARM: s3c: use gpio lookup table for LEDs

[Arnd Bergmann]

On Mon, Apr 27, 2026, at 16:35, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Sorry, I accidentally sent this without a changelog text, this should
have contained

"The crag6410 board is one of the last users of the gpio-led driver
with plain gpio numbers. The driver has several ways to pass this
information without using gpio numbers, using a lookup table is
the easiest way."

      Arnd