diff options
| author | Sven Neumann <s.neumann@raumfeld.com> | 2011-05-25 13:37:31 +0200 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2011-07-11 08:26:31 +0200 |
| commit | 8c568df9d7e9b40063f0a5d4235e3d28df88f92a (patch) | |
| tree | 64426e9b47bd6fb1e45339086c43a06846ba8d95 /arch/arm/mach-pxa | |
| parent | ARM: pxa: fix gpio_to_chip() clash with gpiolib namespace (diff) | |
| download | linux-8c568df9d7e9b40063f0a5d4235e3d28df88f92a.tar.xz linux-8c568df9d7e9b40063f0a5d4235e3d28df88f92a.zip | |
ARM: pxa/raumfeld: adapt to upcoming hardware change
The backlight control is going to change back to PWM in the
upcoming Raumfeld Controller hardware revision.
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/arm/mach-pxa')
| -rw-r--r-- | arch/arm/mach-pxa/raumfeld.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c index d130f77b6d11..8e5b3d8a86be 100644 --- a/arch/arm/mach-pxa/raumfeld.c +++ b/arch/arm/mach-pxa/raumfeld.c @@ -598,14 +598,15 @@ static void __init raumfeld_lcd_init(void) pxa_set_fb_info(NULL, &raumfeld_sharp_lcd_info); - /* Earlier devices had the backlight regulator controlled - * via PWM, later versions use another controller for that */ - if ((system_rev & 0xff) < 2) { + /* 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); - } else - platform_device_register(&raumfeld_lt3593_device); + } ret = gpio_request(GPIO_TFT_VA_EN, "display VA enable"); if (ret < 0) |