Commit d58226a2 authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Simon Horman

ARM: shmobile: armadillo800eva: Add backlight support

The flat panel backlight on the Armadillo 800 EVA board is driven by the
TPU PWM output.
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: default avatarSimon Horman <horms@verge.net.au>
Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent ad81f054
...@@ -31,6 +31,8 @@ ...@@ -31,6 +31,8 @@
#include <linux/gpio_keys.h> #include <linux/gpio_keys.h>
#include <linux/regulator/driver.h> #include <linux/regulator/driver.h>
#include <linux/pinctrl/machine.h> #include <linux/pinctrl/machine.h>
#include <linux/platform_data/pwm-renesas-tpu.h>
#include <linux/pwm_backlight.h>
#include <linux/regulator/fixed.h> #include <linux/regulator/fixed.h>
#include <linux/regulator/gpio-regulator.h> #include <linux/regulator/gpio-regulator.h>
#include <linux/regulator/machine.h> #include <linux/regulator/machine.h>
...@@ -387,7 +389,50 @@ static struct platform_device sh_eth_device = { ...@@ -387,7 +389,50 @@ static struct platform_device sh_eth_device = {
.num_resources = ARRAY_SIZE(sh_eth_resources), .num_resources = ARRAY_SIZE(sh_eth_resources),
}; };
/* LCDC */ /* PWM */
static struct resource pwm_resources[] = {
[0] = {
.start = 0xe6600000,
.end = 0xe66000ff,
.flags = IORESOURCE_MEM,
},
};
static struct tpu_pwm_platform_data pwm_device_data = {
.channels[2] = {
.polarity = PWM_POLARITY_INVERSED,
}
};
static struct platform_device pwm_device = {
.name = "renesas-tpu-pwm",
.id = -1,
.dev = {
.platform_data = &pwm_device_data,
},
.num_resources = ARRAY_SIZE(pwm_resources),
.resource = pwm_resources,
};
static struct pwm_lookup pwm_lookup[] = {
PWM_LOOKUP("renesas-tpu-pwm", 2, "pwm-backlight.0", NULL),
};
/* LCDC and backlight */
static struct platform_pwm_backlight_data pwm_backlight_data = {
.lth_brightness = 50,
.max_brightness = 255,
.dft_brightness = 255,
.pwm_period_ns = 33333, /* 30kHz */
};
static struct platform_device pwm_backlight_device = {
.name = "pwm-backlight",
.dev = {
.platform_data = &pwm_backlight_data,
},
};
static struct fb_videomode lcdc0_mode = { static struct fb_videomode lcdc0_mode = {
.name = "AMPIER/AM-800480", .name = "AMPIER/AM-800480",
.xres = 800, .xres = 800,
...@@ -1030,6 +1075,8 @@ static struct i2c_board_info i2c2_devices[] = { ...@@ -1030,6 +1075,8 @@ static struct i2c_board_info i2c2_devices[] = {
*/ */
static struct platform_device *eva_devices[] __initdata = { static struct platform_device *eva_devices[] __initdata = {
&lcdc0_device, &lcdc0_device,
&pwm_device,
&pwm_backlight_device,
&gpio_keys_device, &gpio_keys_device,
&sh_eth_device, &sh_eth_device,
&vcc_sdhi0, &vcc_sdhi0,
...@@ -1101,6 +1148,9 @@ static const struct pinctrl_map eva_pinctrl_map[] = { ...@@ -1101,6 +1148,9 @@ static const struct pinctrl_map eva_pinctrl_map[] = {
/* ST1232 */ /* ST1232 */
PIN_MAP_MUX_GROUP_DEFAULT("0-0055", "pfc-r8a7740", PIN_MAP_MUX_GROUP_DEFAULT("0-0055", "pfc-r8a7740",
"intc_irq10", "intc"), "intc_irq10", "intc"),
/* TPU0 */
PIN_MAP_MUX_GROUP_DEFAULT("renesas-tpu-pwm", "pfc-r8a7740",
"tpu0_to2_1", "tpu0"),
/* USBHS */ /* USBHS */
PIN_MAP_MUX_GROUP_DEFAULT("renesas_usbhs", "pfc-r8a7740", PIN_MAP_MUX_GROUP_DEFAULT("renesas_usbhs", "pfc-r8a7740",
"intc_irq7_1", "intc"), "intc_irq7_1", "intc"),
...@@ -1154,13 +1204,13 @@ static void __init eva_init(void) ...@@ -1154,13 +1204,13 @@ static void __init eva_init(void)
ARRAY_SIZE(fixed3v3_power_consumers), 3300000); ARRAY_SIZE(fixed3v3_power_consumers), 3300000);
pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map)); pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map));
pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
r8a7740_pinmux_init(); r8a7740_pinmux_init();
r8a7740_meram_workaround(); r8a7740_meram_workaround();
/* LCDC0 */ /* LCDC0 */
gpio_request_one(61, GPIOF_OUT_INIT_HIGH, NULL); /* LCDDON */ gpio_request_one(61, GPIOF_OUT_INIT_HIGH, NULL); /* LCDDON */
gpio_request_one(202, GPIOF_OUT_INIT_LOW, NULL); /* LCD0_LED_CONT */
/* Touchscreen */ /* Touchscreen */
gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */ gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */
......
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