Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into...

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / intel_panel.c

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 21f60b7d69a30819d13f7e0fd942e3ebe4fe7bbd..c935cdaa2154facc89b69c35cc49032192702a5f 100644 (file)
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -141,8 +141,8 @@ static u32 i915_read_blc_pwm_ctl(struct drm_i915_private *dev_priv)
                        dev_priv->saveBLC_PWM_CTL2 = val;
                } else if (val == 0) {
                        I915_WRITE(BLC_PWM_PCH_CTL2,
-                                  dev_priv->saveBLC_PWM_CTL);
-                       val = dev_priv->saveBLC_PWM_CTL;
+                                  dev_priv->saveBLC_PWM_CTL2);
+                       val = dev_priv->saveBLC_PWM_CTL2;
                }
        } else {
                val = I915_READ(BLC_PWM_CTL);
@@ -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);
 }