From 93cc26fa8f37fbd320f36525bfedd4b3e2b3e2ba Mon Sep 17 00:00:00 2001
From: Linus Walleij <linus.walleij@linaro.org>
Date: Mon, 18 Jan 2021 14:23:22 +0100
Subject: backlight: lms283gf05: Convert to GPIO descriptors

This converts the lms283gf05 backlight driver to use GPIO
descriptors and switches the single PXA Palm Z2 device
over to defining these.

Since the platform data was only used to convey GPIO
information we can delete the platform data header.

Notice that we define the proper active low semantics in
the board file GPIO descriptor table (active low) and
assert the reset line by bringing it to "1" (asserted).

Cc: Marek Vasut <marex@denx.de>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Daniel Mack <daniel@zonque.org>
Acked-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 arch/arm/mach-pxa/z2.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

(limited to 'arch/arm/mach-pxa')

diff --git a/arch/arm/mach-pxa/z2.c b/arch/arm/mach-pxa/z2.c
index 21fd76bb09cd..89eb5243c85f 100644
--- a/arch/arm/mach-pxa/z2.c
+++ b/arch/arm/mach-pxa/z2.c
@@ -20,7 +20,6 @@
 #include <linux/spi/spi.h>
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/spi/libertas_spi.h>
-#include <linux/spi/lms283gf05.h>
 #include <linux/power_supply.h>
 #include <linux/mtd/physmap.h>
 #include <linux/gpio.h>
@@ -578,8 +577,13 @@ static struct pxa2xx_spi_chip lms283_chip_info = {
 	.gpio_cs	= GPIO88_ZIPITZ2_LCD_CS,
 };
 
-static const struct lms283gf05_pdata lms283_pdata = {
-	.reset_gpio	= GPIO19_ZIPITZ2_LCD_RESET,
+static struct gpiod_lookup_table lms283_gpio_table = {
+	.dev_id = "spi2.0", /* SPI bus 2 chip select 0 */
+	.table = {
+		GPIO_LOOKUP("gpio-pxa", GPIO19_ZIPITZ2_LCD_RESET,
+			    "reset", GPIO_ACTIVE_LOW),
+		{ },
+	},
 };
 
 static struct spi_board_info spi_board_info[] __initdata = {
@@ -595,7 +599,6 @@ static struct spi_board_info spi_board_info[] __initdata = {
 {
 	.modalias		= "lms283gf05",
 	.controller_data	= &lms283_chip_info,
-	.platform_data		= &lms283_pdata,
 	.max_speed_hz		= 400000,
 	.bus_num		= 2,
 	.chip_select		= 0,
@@ -615,6 +618,7 @@ static void __init z2_spi_init(void)
 {
 	pxa2xx_set_spi_info(1, &pxa_ssp1_master_info);
 	pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);
+	gpiod_add_lookup_table(&lms283_gpio_table);
 	spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
 }
 #else
-- 
cgit