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| author | Sven Neumann <s.neumann@raumfeld.com> | 2011-05-25 13:37:32 +0200 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2011-07-11 14:26:32 +0800 |
| commit | a74fe1194b8da1dcee7529ba14999381bb9c25d9 (patch) | |
| tree | 196eb3bb308c0c347aad9b569f7112a71082c6c6 /arch | |
| parent | 8c568df9d7e9b40063f0a5d4235e3d28df88f92a (diff) | |
| download | linux-a74fe1194b8da1dcee7529ba14999381bb9c25d9.tar.gz linux-a74fe1194b8da1dcee7529ba14999381bb9c25d9.tar.bz2 linux-a74fe1194b8da1dcee7529ba14999381bb9c25d9.zip | |
ARM: pxa/raumfeld: display initialisation fixes
The display requires some milliseconds between GPIO_TFT_VA_EN
and GPIO_DISPLAY_ENABLE. Reorder initialisation to comply with
the display spec.
Also tune timings for better compliance with the spec.
Signed-off-by: Sven Neumann <s.neumann@raumfeld.com>
Acked-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-pxa/raumfeld.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c index 8e5b3d8a86be..9caa5e5c8d94 100644 --- a/arch/arm/mach-pxa/raumfeld.c +++ b/arch/arm/mach-pxa/raumfeld.c @@ -573,10 +573,10 @@ static struct pxafb_mode_info sharp_lq043t3dx02_mode = { .xres = 480, .yres = 272, .bpp = 16, - .hsync_len = 4, + .hsync_len = 41, .left_margin = 2, .right_margin = 1, - .vsync_len = 1, + .vsync_len = 10, .upper_margin = 3, .lower_margin = 1, .sync = 0, @@ -596,30 +596,31 @@ static void __init raumfeld_lcd_init(void) { int ret; - pxa_set_fb_info(NULL, &raumfeld_sharp_lcd_info); - - /* Hardware revision 2 has the backlight regulator controlled - * by an LT3593, earlier and later devices use PWM for that. */ - if ((system_rev & 0xff) == 2) { - platform_device_register(&raumfeld_lt3593_device); - } else { - mfp_cfg_t raumfeld_pwm_pin_config = GPIO17_PWM0_OUT; - pxa3xx_mfp_config(&raumfeld_pwm_pin_config, 1); - platform_device_register(&raumfeld_pwm_backlight_device); - } - ret = gpio_request(GPIO_TFT_VA_EN, "display VA enable"); if (ret < 0) pr_warning("Unable to request GPIO_TFT_VA_EN\n"); else gpio_direction_output(GPIO_TFT_VA_EN, 1); + msleep(100); + ret = gpio_request(GPIO_DISPLAY_ENABLE, "display enable"); if (ret < 0) pr_warning("Unable to request GPIO_DISPLAY_ENABLE\n"); else gpio_direction_output(GPIO_DISPLAY_ENABLE, 1); + /* Hardware revision 2 has the backlight regulator controlled + * by an LT3593, earlier and later devices use PWM for that. */ + if ((system_rev & 0xff) == 2) { + platform_device_register(&raumfeld_lt3593_device); + } else { + mfp_cfg_t raumfeld_pwm_pin_config = GPIO17_PWM0_OUT; + pxa3xx_mfp_config(&raumfeld_pwm_pin_config, 1); + platform_device_register(&raumfeld_pwm_backlight_device); + } + + pxa_set_fb_info(NULL, &raumfeld_sharp_lcd_info); platform_device_register(&pxa3xx_device_gcu); } |