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path: root/drivers/gpu/drm/i915/intel_panel.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_panel.c')
-rw-r--r--drivers/gpu/drm/i915/intel_panel.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 499d4c0dbeeb..04d79fd1dc9d 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -178,13 +178,10 @@ u32 intel_panel_get_max_backlight(struct drm_device *dev)
if (HAS_PCH_SPLIT(dev)) {
max >>= 16;
} else {
- if (IS_PINEVIEW(dev)) {
+ if (INTEL_INFO(dev)->gen < 4)
max >>= 17;
- } else {
+ else
max >>= 16;
- if (INTEL_INFO(dev)->gen < 4)
- max &= ~1;
- }
if (is_backlight_combination_mode(dev))
max *= 0xff;
@@ -203,13 +200,12 @@ u32 intel_panel_get_backlight(struct drm_device *dev)
val = I915_READ(BLC_PWM_CPU_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
} else {
val = I915_READ(BLC_PWM_CTL) & BACKLIGHT_DUTY_CYCLE_MASK;
- if (IS_PINEVIEW(dev))
+ if (INTEL_INFO(dev)->gen < 4)
val >>= 1;
if (is_backlight_combination_mode(dev)) {
u8 lbpc;
- val &= ~1;
pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
val *= lbpc;
}
@@ -246,11 +242,9 @@ static void intel_panel_actually_set_backlight(struct drm_device *dev, u32 level
}
tmp = I915_READ(BLC_PWM_CTL);
- if (IS_PINEVIEW(dev)) {
- tmp &= ~(BACKLIGHT_DUTY_CYCLE_MASK - 1);
+ if (INTEL_INFO(dev)->gen < 4)
level <<= 1;
- } else
- tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK;
+ tmp &= ~BACKLIGHT_DUTY_CYCLE_MASK;
I915_WRITE(BLC_PWM_CTL, tmp | level);
}
@@ -326,7 +320,8 @@ static int intel_panel_update_status(struct backlight_device *bd)
static int intel_panel_get_brightness(struct backlight_device *bd)
{
struct drm_device *dev = bl_get_data(bd);
- return intel_panel_get_backlight(dev);
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ return dev_priv->backlight_level;
}
static const struct backlight_ops intel_panel_bl_ops = {