diff options
Diffstat (limited to 'drivers/gpu/drm/gma500/oaktrail_device.c')
| -rw-r--r-- | drivers/gpu/drm/gma500/oaktrail_device.c | 65 |
1 files changed, 5 insertions, 60 deletions
diff --git a/drivers/gpu/drm/gma500/oaktrail_device.c b/drivers/gpu/drm/gma500/oaktrail_device.c index f90e628cb482..2531959d3d77 100644 --- a/drivers/gpu/drm/gma500/oaktrail_device.c +++ b/drivers/gpu/drm/gma500/oaktrail_device.c @@ -5,7 +5,6 @@ * **************************************************************************/ -#include <linux/backlight.h> #include <linux/delay.h> #include <linux/dmi.h> #include <linux/module.h> @@ -37,29 +36,18 @@ static int oaktrail_output_init(struct drm_device *dev) * Provide the low level interfaces for the Moorestown backlight */ -#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE - #define MRST_BLC_MAX_PWM_REG_FREQ 0xFFFF #define BLC_PWM_PRECISION_FACTOR 100 /* 10000000 */ #define BLC_PWM_FREQ_CALC_CONSTANT 32 #define MHz 1000000 #define BLC_ADJUSTMENT_MAX 100 -static struct backlight_device *oaktrail_backlight_device; -static int oaktrail_brightness; - -static int oaktrail_set_brightness(struct backlight_device *bd) +static void oaktrail_set_brightness(struct drm_device *dev, int level) { - struct drm_device *dev = bl_get_data(oaktrail_backlight_device); struct drm_psb_private *dev_priv = to_drm_psb_private(dev); - int level = bd->props.brightness; u32 blc_pwm_ctl; u32 max_pwm_blc; - /* Percentage 1-100% being valid */ - if (level < 1) - level = 1; - if (gma_power_begin(dev, 0)) { /* Calculate and set the brightness value */ max_pwm_blc = REG_READ(BLC_PWM_CTL) >> 16; @@ -82,19 +70,9 @@ static int oaktrail_set_brightness(struct backlight_device *bd) REG_WRITE(BLC_PWM_CTL, (max_pwm_blc << 16) | blc_pwm_ctl); gma_power_end(dev); } - oaktrail_brightness = level; - return 0; -} - -static int oaktrail_get_brightness(struct backlight_device *bd) -{ - /* return locally cached var instead of HW read (due to DPST etc.) */ - /* FIXME: ideally return actual value in case firmware fiddled with - it */ - return oaktrail_brightness; } -static int device_backlight_init(struct drm_device *dev) +static int oaktrail_backlight_init(struct drm_device *dev) { struct drm_psb_private *dev_priv = to_drm_psb_private(dev); unsigned long core_clock; @@ -123,44 +101,11 @@ static int device_backlight_init(struct drm_device *dev) REG_WRITE(BLC_PWM_CTL, value | (value << 16)); gma_power_end(dev); } - return 0; -} - -static const struct backlight_ops oaktrail_ops = { - .get_brightness = oaktrail_get_brightness, - .update_status = oaktrail_set_brightness, -}; -static int oaktrail_backlight_init(struct drm_device *dev) -{ - struct drm_psb_private *dev_priv = to_drm_psb_private(dev); - int ret; - struct backlight_properties props; - - memset(&props, 0, sizeof(struct backlight_properties)); - props.max_brightness = 100; - props.type = BACKLIGHT_PLATFORM; - - oaktrail_backlight_device = backlight_device_register("oaktrail-bl", - NULL, (void *)dev, &oaktrail_ops, &props); - - if (IS_ERR(oaktrail_backlight_device)) - return PTR_ERR(oaktrail_backlight_device); - - ret = device_backlight_init(dev); - if (ret < 0) { - backlight_device_unregister(oaktrail_backlight_device); - return ret; - } - oaktrail_backlight_device->props.brightness = 100; - oaktrail_backlight_device->props.max_brightness = 100; - backlight_update_status(oaktrail_backlight_device); - dev_priv->backlight_device = oaktrail_backlight_device; + oaktrail_set_brightness(dev, PSB_MAX_BRIGHTNESS); return 0; } -#endif - /* * Provide the Moorestown specific chip logic and low level methods * for power management @@ -545,9 +490,9 @@ const struct psb_ops oaktrail_chip_ops = { .output_init = oaktrail_output_init, -#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE .backlight_init = oaktrail_backlight_init, -#endif + .backlight_set = oaktrail_set_brightness, + .backlight_name = "oaktrail-bl", .save_regs = oaktrail_save_display_registers, .restore_regs = oaktrail_restore_display_registers, |