drm/i915: Polish the chv cmnlane resrt macros

Replace the semi-funky cmnlane assert/deassert macros with something a
bit more conventional. Also protect the macro arguments properly (also
for  PHY_POWERGOOD()).

Reviewed-by: Rafael Barbalho <rafael.barbalho@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fbdb08f..468ef09 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1697,12 +1697,9 @@ enum punit_power_well {
 #define DPIO_PHY_STATUS                        (VLV_DISPLAY_BASE + 0x6240)
 #define   DPLL_PORTD_READY_MASK                (0xf)
 #define DISPLAY_PHY_CONTROL (VLV_DISPLAY_BASE + 0x60100)
-#define   PHY_COM_LANE_RESET_DEASSERT(phy, val) \
-                               ((phy == DPIO_PHY0) ? (val | 1) : (val | 2))
-#define   PHY_COM_LANE_RESET_ASSERT(phy, val) \
-                               ((phy == DPIO_PHY0) ? (val & ~1) : (val & ~2))
+#define   PHY_COM_LANE_RESET_DEASSERT(phy) (1 << (phy))
 #define DISPLAY_PHY_STATUS (VLV_DISPLAY_BASE + 0x60104)
-#define   PHY_POWERGOOD(phy)   ((phy == DPIO_PHY0) ? (1<<31) : (1<<30))
+#define   PHY_POWERGOOD(phy)   (((phy) == DPIO_PHY0) ? (1<<31) : (1<<30))
 
 /*
  * The i830 generation, in LVDS mode, defines P1 as the bit number set within

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index aaae228..42bb329 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6359,8 +6359,8 @@ static void chv_dpio_cmn_power_well_enable(struct drm_i915_private *dev_priv,
        if (wait_for(I915_READ(DISPLAY_PHY_STATUS) & PHY_POWERGOOD(phy), 1))
                DRM_ERROR("Display PHY %d is not power up\n", phy);
 
-       I915_WRITE(DISPLAY_PHY_CONTROL,
-                  PHY_COM_LANE_RESET_DEASSERT(phy, I915_READ(DISPLAY_PHY_CONTROL)));
+       I915_WRITE(DISPLAY_PHY_CONTROL, I915_READ(DISPLAY_PHY_CONTROL) |
+                  PHY_COM_LANE_RESET_DEASSERT(phy));
 }
 
 static void chv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
@@ -6380,8 +6380,8 @@ static void chv_dpio_cmn_power_well_disable(struct drm_i915_private *dev_priv,
                assert_pll_disabled(dev_priv, PIPE_C);
        }
 
-       I915_WRITE(DISPLAY_PHY_CONTROL,
-                  PHY_COM_LANE_RESET_ASSERT(phy, I915_READ(DISPLAY_PHY_CONTROL)));
+       I915_WRITE(DISPLAY_PHY_CONTROL, I915_READ(DISPLAY_PHY_CONTROL) &
+                  ~PHY_COM_LANE_RESET_DEASSERT(phy));
 
        vlv_set_power_well(dev_priv, power_well, false);
 }