diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-04-13 21:47:01 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-07-03 13:25:03 +0100 |
| commit | 402e490997ddaae310a080534a61d7ec24df8124 (patch) | |
| tree | a40d61d6ef76886e6574e53d7342af62e2a703cf | |
| parent | 5cca91479b8ac6a60b61bc56e72389c681387211 (diff) | |
[ARM] pxa: make mainstone use the generic PWM backlight driver
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mach-pxa/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/mainstone.c | 63 |
2 files changed, 18 insertions, 46 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig index b7a3281c420..2d711308076 100644 --- a/arch/arm/mach-pxa/Kconfig +++ b/arch/arm/mach-pxa/Kconfig @@ -41,6 +41,7 @@ config MACH_LOGICPD_PXA270 config MACH_MAINSTONE bool "Intel HCDDBBVA0 Development Platform" select PXA27x + select HAVE_PWM config ARCH_PXA_IDP bool "Accelent Xscale IDP" diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c index 7399fb34da4..266594426e8 100644 --- a/arch/arm/mach-pxa/mainstone.c +++ b/arch/arm/mach-pxa/mainstone.c @@ -23,9 +23,9 @@ #include <linux/ioport.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> -#include <linux/backlight.h> #include <linux/input.h> #include <linux/gpio_keys.h> +#include <linux/pwm_backlight.h> #include <asm/types.h> #include <asm/setup.h> @@ -349,56 +349,27 @@ static struct platform_device mst_flash_device[2] = { }, }; -#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE -static int mainstone_backlight_update_status(struct backlight_device *bl) -{ - int brightness = bl->props.brightness; - - if (bl->props.power != FB_BLANK_UNBLANK || - bl->props.fb_blank != FB_BLANK_UNBLANK) - brightness = 0; - - if (brightness != 0) - pxa_set_cken(CKEN_PWM0, 1); - - PWM_CTRL0 = 0; - PWM_PWDUTY0 = brightness; - PWM_PERVAL0 = bl->props.max_brightness; - - if (brightness == 0) - pxa_set_cken(CKEN_PWM0, 0); - return 0; /* pointless return value */ -} - -static int mainstone_backlight_get_brightness(struct backlight_device *bl) -{ - return PWM_PWDUTY0; -} +#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE) +static struct platform_pwm_backlight_data mainstone_backlight_data = { + .pwm_id = 0, + .max_brightness = 1023, + .dft_brightness = 1023, + .pwm_period_ns = 78770, +}; -static /*const*/ struct backlight_ops mainstone_backlight_ops = { - .update_status = mainstone_backlight_update_status, - .get_brightness = mainstone_backlight_get_brightness, +static struct platform_device mainstone_backlight_device = { + .name = "pwm-backlight", + .dev = { + .parent = &pxa27x_device_pwm0.dev, + .platform_data = &mainstone_backlight_data, + }, }; static void __init mainstone_backlight_register(void) { - struct backlight_device *bl; - - bl = backlight_device_register("mainstone-bl", &pxa_device_fb.dev, - NULL, &mainstone_backlight_ops); - if (IS_ERR(bl)) { - printk(KERN_ERR "mainstone: unable to register backlight: %ld\n", - PTR_ERR(bl)); - return; - } - - /* - * broken design - register-then-setup interfaces are - * utterly broken by definition. - */ - bl->props.max_brightness = 1023; - bl->props.brightness = 1023; - backlight_update_status(bl); + int ret = platform_device_register(&mainstone_backlight_device); + if (ret) + printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret); } #else #define mainstone_backlight_register() do { } while (0) |