drm/i915: Hook up pfit for DSI

[deliverable/linux.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 21ee6477bf98d1fe7974f90e76369adb57cbcc83..8c8996fcbaf51c3163c4289cb99eac530596cbf9 100644 (file)
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1240,7 +1240,7 @@ static void intel_backlight_device_unregister(struct intel_connector *connector)
  */
 static u32 bxt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 {
-       return KHz(19200) / pwm_freq_hz;
+       return DIV_ROUND_CLOSEST(KHz(19200), pwm_freq_hz);
 }
 
 /*
@@ -1251,16 +1251,14 @@ static u32 bxt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 static u32 spt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 {
        struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
-       u32 mul, clock;
+       u32 mul;
 
        if (I915_READ(SOUTH_CHICKEN1) & SPT_PWM_GRANULARITY)
                mul = 128;
        else
                mul = 16;
 
-       clock = MHz(24);
-
-       return clock / (pwm_freq_hz * mul);
+       return DIV_ROUND_CLOSEST(MHz(24), pwm_freq_hz * mul);
 }
 
 /*
@@ -1283,7 +1281,7 @@ static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
        else
                clock = MHz(24); /* LPT:LP */
 
-       return clock / (pwm_freq_hz * mul);
+       return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * mul);
 }
 
 /*
@@ -1292,10 +1290,9 @@ static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
  */
 static u32 pch_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 {
-       struct drm_device *dev = connector->base.dev;
-       int clock = MHz(intel_pch_rawclk(dev));
+       struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
 
-       return clock / (pwm_freq_hz * 128);
+       return DIV_ROUND_CLOSEST(KHz(dev_priv->rawclk_freq), pwm_freq_hz * 128);
 }
 
 /*
@@ -1308,16 +1305,15 @@ static u32 pch_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
  */
 static u32 i9xx_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 {
-       struct drm_device *dev = connector->base.dev;
-       struct drm_i915_private *dev_priv = dev->dev_private;
+       struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
        int clock;
 
-       if (IS_PINEVIEW(dev))
-               clock = MHz(intel_hrawclk(dev));
+       if (IS_PINEVIEW(dev_priv))
+               clock = KHz(dev_priv->rawclk_freq);
        else
-               clock = 1000 * dev_priv->cdclk_freq;
+               clock = KHz(dev_priv->cdclk_freq);
 
-       return clock / (pwm_freq_hz * 32);
+       return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * 32);
 }
 
 /*
@@ -1332,11 +1328,11 @@ static u32 i965_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
        int clock;
 
        if (IS_G4X(dev_priv))
-               clock = MHz(intel_hrawclk(dev));
+               clock = KHz(dev_priv->rawclk_freq);
        else
-               clock = 1000 * dev_priv->cdclk_freq;
+               clock = KHz(dev_priv->cdclk_freq);
 
-       return clock / (pwm_freq_hz * 128);
+       return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * 128);
 }
 
 /*
@@ -1346,19 +1342,21 @@ static u32 i965_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
  */
 static u32 vlv_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 {
-       struct drm_device *dev = connector->base.dev;
-       struct drm_i915_private *dev_priv = dev->dev_private;
-       int clock;
+       struct drm_i915_private *dev_priv = to_i915(connector->base.dev);
+       int mul, clock;
 
        if ((I915_READ(CBR1_VLV) & CBR_PWM_CLOCK_MUX_SELECT) == 0) {
-               if (IS_CHERRYVIEW(dev))
-                       return KHz(19200) / (pwm_freq_hz * 16);
+               if (IS_CHERRYVIEW(dev_priv))
+                       clock = KHz(19200);
                else
-                       return MHz(25) / (pwm_freq_hz * 16);
+                       clock = MHz(25);
+               mul = 16;
        } else {
-               clock = intel_hrawclk(dev);
-               return MHz(clock) / (pwm_freq_hz * 128);
+               clock = KHz(dev_priv->rawclk_freq);
+               mul = 128;
        }
+
+       return DIV_ROUND_CLOSEST(clock, pwm_freq_hz * mul);
 }
 
 static u32 get_backlight_max_vbt(struct intel_connector *connector)
@@ -1745,7 +1743,7 @@ intel_panel_init_backlight_funcs(struct intel_panel *panel)
                panel->backlight.get = pch_get_backlight;
                panel->backlight.hz_to_pwm = pch_hz_to_pwm;
        } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
-               if (dev_priv->vbt.has_mipi) {
+               if (connector->base.connector_type == DRM_MODE_CONNECTOR_DSI) {
                        panel->backlight.setup = pwm_setup_backlight;
                        panel->backlight.enable = pwm_enable_backlight;
                        panel->backlight.disable = pwm_disable_backlight;