drm/i915/psr: Move PSR aux setup to it's own function.

Non-functional change useful for the following patch.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180313034646.3721-1-dhinakaran.pandiyan@intel.com

1 files changed, 20 insertions, 11 deletions

diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 317cb4a12693..2c001f4fba3e 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -246,7 +246,7 @@ static i915_reg_t psr_aux_data_reg(struct drm_i915_private *dev_priv,
                 return EDP_PSR_AUX_DATA(index);
 }
 
-static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
+static void hsw_psr_setup_aux(struct intel_dp *intel_dp)
 {
         struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
         struct drm_device *dev = dig_port->base.base.dev;
@@ -267,6 +267,24 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
         BUILD_BUG_ON(sizeof(aux_msg) > 20);
 
         aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0);
+        aux_ctl_reg = psr_aux_ctl_reg(dev_priv, port);
+
+        /* Setup AUX registers */
+        for (i = 0; i < sizeof(aux_msg); i += 4)
+                I915_WRITE(psr_aux_data_reg(dev_priv, port, i >> 2),
+                           intel_dp_pack_aux(&aux_msg[i], sizeof(aux_msg) - i));
+
+        aux_ctl = intel_dp->get_aux_send_ctl(intel_dp, 0, sizeof(aux_msg),
+                                             aux_clock_divider);
+        I915_WRITE(aux_ctl_reg, aux_ctl);
+}
+
+static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
+{
+        struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+        struct drm_device *dev = dig_port->base.base.dev;
+        struct drm_i915_private *dev_priv = to_i915(dev);
+
 
         /* Enable AUX frame sync at sink */
         if (dev_priv->psr.aux_frame_sync)
@@ -285,16 +303,7 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
                 drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
                                    DP_PSR_ENABLE);
 
-        aux_ctl_reg = psr_aux_ctl_reg(dev_priv, port);
-
-        /* Setup AUX registers */
-        for (i = 0; i < sizeof(aux_msg); i += 4)
-                I915_WRITE(psr_aux_data_reg(dev_priv, port, i >> 2),
-                           intel_dp_pack_aux(&aux_msg[i], sizeof(aux_msg) - i));
-
-        aux_ctl = intel_dp->get_aux_send_ctl(intel_dp, 0, sizeof(aux_msg),
-                                             aux_clock_divider);
-        I915_WRITE(aux_ctl_reg, aux_ctl);
+        hsw_psr_setup_aux(intel_dp);
 }
 
 static void vlv_psr_enable_source(struct intel_dp *intel_dp,