drm/i915: Add HAS_PCH_LPT_H()

We have HAS_PCH_LPT_LP() already, so add HAS_PCH_LPT_H() and use it
where appropriate.
Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448893432-6978-4-git-send-email-ville.syrjala@linux.intel.comReviewed-by: NJani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/i915_drv.h

@@ -2615,6 +2615,7 @@ struct drm_i915_cmd_table {
 #define HAS_PCH_SPT(dev) (INTEL_PCH_TYPE(dev) == PCH_SPT)
 #define HAS_PCH_LPT(dev) (INTEL_PCH_TYPE(dev) == PCH_LPT)
 #define HAS_PCH_LPT_LP(dev) (__I915__(dev)->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE)
+#define HAS_PCH_LPT_H(dev) (__I915__(dev)->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE)
 #define HAS_PCH_CPT(dev) (INTEL_PCH_TYPE(dev) == PCH_CPT)
 #define HAS_PCH_IBX(dev) (INTEL_PCH_TYPE(dev) == PCH_IBX)
 #define HAS_PCH_NOP(dev) (INTEL_PCH_TYPE(dev) == PCH_NOP)

drivers/gpu/drm/i915/intel_dp.c

@@ -711,7 +711,7 @@ static uint32_t hsw_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
 		if (index)
 			return 0;
 		return DIV_ROUND_CLOSEST(dev_priv->cdclk_freq, 2000);
-	} else if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
+	} else if (HAS_PCH_LPT_H(dev_priv)) {
 		/* Workaround for non-ULT HSW */
 		switch (index) {
 		case 0: return 63;

drivers/gpu/drm/i915/intel_panel.c

@@ -1308,7 +1308,7 @@ static u32 lpt_hz_to_pwm(struct intel_connector *connector, u32 pwm_freq_hz)
 	else
 		mul = 128;
 
-	if (dev_priv->pch_id == INTEL_PCH_LPT_DEVICE_ID_TYPE)
+	if (HAS_PCH_LPT_H(dev_priv))
 		clock = MHz(135); /* LPT:H */
 	else
 		clock = MHz(24); /* LPT:LP */