[PATCH v2] drm/i915: Generalize transcoder looping

[Mika Kahola]

To make looping through transcoders in intel_ddi.c more generic, let's switch
to use 'for_each_pipe()' macro to do this.

v2: Add a notion that we are dealing with transcoders instead of pipes (Jani)

Signed-off-by: Mika Kahola <mika.kahola at intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index ace674c..e35f51f 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1682,8 +1682,8 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
 	struct drm_i915_private *dev_priv = to_i915(dev);
 	enum port port = encoder->port;
 	u32 tmp;
-	int i;
 	bool ret;
+	enum pipe p;
 
 	if (!intel_display_power_get_if_enabled(dev_priv,
 						encoder->power_domain))
@@ -1717,15 +1717,17 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
 		goto out;
 	}
 
-	for (i = TRANSCODER_A; i <= TRANSCODER_C; i++) {
-		tmp = I915_READ(TRANS_DDI_FUNC_CTL(i));
+	for_each_pipe(dev_priv, p) {
+		enum transcoder cpu_transcoder = (enum transcoder) p;
+
+		tmp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
 
 		if ((tmp & TRANS_DDI_PORT_MASK) == TRANS_DDI_SELECT_PORT(port)) {
 			if ((tmp & TRANS_DDI_MODE_SELECT_MASK) ==
 			    TRANS_DDI_MODE_SELECT_DP_MST)
 				goto out;
 
-			*pipe = i;
+			*pipe = p;
 			ret = true;
 
 			goto out;
-- 
2.7.4