diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-07-16 06:32:05 -0400 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-07-18 22:22:46 -0400 |
| commit | d58226a21a7b84a3f82265821f24ce2aad267f1c (patch) | |
| tree | c7ce20517e0336eed75b6fac5a35d402ae62bb1c /arch/arm/mach-shmobile/board-armadillo800eva.c | |
| parent | ad81f0545ef01ea651886dddac4bef6cec930092 (diff) | |
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: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/mach-shmobile/board-armadillo800eva.c')
| -rw-r--r-- | arch/arm/mach-shmobile/board-armadillo800eva.c | 54 |
1 files changed, 52 insertions, 2 deletions
diff --git a/arch/arm/mach-shmobile/board-armadillo800eva.c b/arch/arm/mach-shmobile/board-armadillo800eva.c index e115f6742107..9457c763b797 100644 --- a/arch/arm/mach-shmobile/board-armadillo800eva.c +++ b/arch/arm/mach-shmobile/board-armadillo800eva.c | |||
| @@ -31,6 +31,8 @@ | |||
| 31 | #include <linux/gpio_keys.h> | 31 | #include <linux/gpio_keys.h> |
| 32 | #include <linux/regulator/driver.h> | 32 | #include <linux/regulator/driver.h> |
| 33 | #include <linux/pinctrl/machine.h> | 33 | #include <linux/pinctrl/machine.h> |
| 34 | #include <linux/platform_data/pwm-renesas-tpu.h> | ||
| 35 | #include <linux/pwm_backlight.h> | ||
| 34 | #include <linux/regulator/fixed.h> | 36 | #include <linux/regulator/fixed.h> |
| 35 | #include <linux/regulator/gpio-regulator.h> | 37 | #include <linux/regulator/gpio-regulator.h> |
| 36 | #include <linux/regulator/machine.h> | 38 | #include <linux/regulator/machine.h> |
| @@ -387,7 +389,50 @@ static struct platform_device sh_eth_device = { | |||
| 387 | .num_resources = ARRAY_SIZE(sh_eth_resources), | 389 | .num_resources = ARRAY_SIZE(sh_eth_resources), |
| 388 | }; | 390 | }; |
| 389 | 391 | ||
| 390 | /* LCDC */ | 392 | /* PWM */ |
| 393 | static struct resource pwm_resources[] = { | ||
| 394 | [0] = { | ||
| 395 | .start = 0xe6600000, | ||
| 396 | .end = 0xe66000ff, | ||
| 397 | .flags = IORESOURCE_MEM, | ||
| 398 | }, | ||
| 399 | }; | ||
| 400 | |||
| 401 | static struct tpu_pwm_platform_data pwm_device_data = { | ||
| 402 | .channels[2] = { | ||
| 403 | .polarity = PWM_POLARITY_INVERSED, | ||
| 404 | } | ||
| 405 | }; | ||
| 406 | |||
| 407 | static struct platform_device pwm_device = { | ||
| 408 | .name = "renesas-tpu-pwm", | ||
| 409 | .id = -1, | ||
| 410 | .dev = { | ||
| 411 | .platform_data = &pwm_device_data, | ||
| 412 | }, | ||
| 413 | .num_resources = ARRAY_SIZE(pwm_resources), | ||
| 414 | .resource = pwm_resources, | ||
| 415 | }; | ||
| 416 | |||
| 417 | static struct pwm_lookup pwm_lookup[] = { | ||
| 418 | PWM_LOOKUP("renesas-tpu-pwm", 2, "pwm-backlight.0", NULL), | ||
| 419 | }; | ||
| 420 | |||
| 421 | /* LCDC and backlight */ | ||
| 422 | static struct platform_pwm_backlight_data pwm_backlight_data = { | ||
| 423 | .lth_brightness = 50, | ||
| 424 | .max_brightness = 255, | ||
| 425 | .dft_brightness = 255, | ||
| 426 | .pwm_period_ns = 33333, /* 30kHz */ | ||
| 427 | }; | ||
| 428 | |||
| 429 | static struct platform_device pwm_backlight_device = { | ||
| 430 | .name = "pwm-backlight", | ||
| 431 | .dev = { | ||
| 432 | .platform_data = &pwm_backlight_data, | ||
| 433 | }, | ||
| 434 | }; | ||
| 435 | |||
| 391 | static struct fb_videomode lcdc0_mode = { | 436 | static struct fb_videomode lcdc0_mode = { |
| 392 | .name = "AMPIER/AM-800480", | 437 | .name = "AMPIER/AM-800480", |
| 393 | .xres = 800, | 438 | .xres = 800, |
| @@ -1030,6 +1075,8 @@ static struct i2c_board_info i2c2_devices[] = { | |||
| 1030 | */ | 1075 | */ |
| 1031 | static struct platform_device *eva_devices[] __initdata = { | 1076 | static struct platform_device *eva_devices[] __initdata = { |
| 1032 | &lcdc0_device, | 1077 | &lcdc0_device, |
| 1078 | &pwm_device, | ||
| 1079 | &pwm_backlight_device, | ||
| 1033 | &gpio_keys_device, | 1080 | &gpio_keys_device, |
| 1034 | &sh_eth_device, | 1081 | &sh_eth_device, |
| 1035 | &vcc_sdhi0, | 1082 | &vcc_sdhi0, |
| @@ -1101,6 +1148,9 @@ static const struct pinctrl_map eva_pinctrl_map[] = { | |||
| 1101 | /* ST1232 */ | 1148 | /* ST1232 */ |
| 1102 | PIN_MAP_MUX_GROUP_DEFAULT("0-0055", "pfc-r8a7740", | 1149 | PIN_MAP_MUX_GROUP_DEFAULT("0-0055", "pfc-r8a7740", |
| 1103 | "intc_irq10", "intc"), | 1150 | "intc_irq10", "intc"), |
| 1151 | /* TPU0 */ | ||
| 1152 | PIN_MAP_MUX_GROUP_DEFAULT("renesas-tpu-pwm", "pfc-r8a7740", | ||
| 1153 | "tpu0_to2_1", "tpu0"), | ||
| 1104 | /* USBHS */ | 1154 | /* USBHS */ |
| 1105 | PIN_MAP_MUX_GROUP_DEFAULT("renesas_usbhs", "pfc-r8a7740", | 1155 | PIN_MAP_MUX_GROUP_DEFAULT("renesas_usbhs", "pfc-r8a7740", |
| 1106 | "intc_irq7_1", "intc"), | 1156 | "intc_irq7_1", "intc"), |
| @@ -1154,13 +1204,13 @@ static void __init eva_init(void) | |||
| 1154 | ARRAY_SIZE(fixed3v3_power_consumers), 3300000); | 1204 | ARRAY_SIZE(fixed3v3_power_consumers), 3300000); |
| 1155 | 1205 | ||
| 1156 | pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map)); | 1206 | pinctrl_register_mappings(eva_pinctrl_map, ARRAY_SIZE(eva_pinctrl_map)); |
| 1207 | pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup)); | ||
| 1157 | 1208 | ||
| 1158 | r8a7740_pinmux_init(); | 1209 | r8a7740_pinmux_init(); |
| 1159 | r8a7740_meram_workaround(); | 1210 | r8a7740_meram_workaround(); |
| 1160 | 1211 | ||
| 1161 | /* LCDC0 */ | 1212 | /* LCDC0 */ |
| 1162 | gpio_request_one(61, GPIOF_OUT_INIT_HIGH, NULL); /* LCDDON */ | 1213 | gpio_request_one(61, GPIOF_OUT_INIT_HIGH, NULL); /* LCDDON */ |
| 1163 | gpio_request_one(202, GPIOF_OUT_INIT_LOW, NULL); /* LCD0_LED_CONT */ | ||
| 1164 | 1214 | ||
| 1165 | /* Touchscreen */ | 1215 | /* Touchscreen */ |
| 1166 | gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */ | 1216 | gpio_request_one(166, GPIOF_OUT_INIT_HIGH, NULL); /* TP_RST_B */ |