drm/i915: Wire up CRC for vlv

v2: Actually enable it.

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

1 files changed, 25 insertions, 3 deletions

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 9a4f168c9e39..25fc3841a2b1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1964,6 +1964,29 @@ static int i8xx_pipe_crc_ctl_reg(enum intel_pipe_crc_source source,
         return 0;
 }
 
+static int vlv_pipe_crc_ctl_reg(enum intel_pipe_crc_source source,
+                                uint32_t *val)
+{
+        switch (source) {
+        case INTEL_PIPE_CRC_SOURCE_PIPE:
+                *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_PIPE_VLV;
+                break;
+        case INTEL_PIPE_CRC_SOURCE_DP_B:
+                *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_B_VLV;
+                break;
+        case INTEL_PIPE_CRC_SOURCE_DP_C:
+                *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_VLV;
+                break;
+        case INTEL_PIPE_CRC_SOURCE_NONE:
+                *val = 0;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
 static int i9xx_pipe_crc_ctl_reg(struct drm_device *dev,
                                  enum intel_pipe_crc_source source,
                                  uint32_t *val)
@@ -2056,9 +2079,6 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
         u32 val;
         int ret;
 
-        if (IS_VALLEYVIEW(dev))
-                return -ENODEV;
-
         if (pipe_crc->source == source)
                 return 0;
 
@@ -2070,6 +2090,8 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
                 ret = i8xx_pipe_crc_ctl_reg(source, &val);
         else if (INTEL_INFO(dev)->gen < 5)
                 ret = i9xx_pipe_crc_ctl_reg(dev, source, &val);
+        else if (IS_VALLEYVIEW(dev))
+                ret = vlv_pipe_crc_ctl_reg(source, &val);
         else if (IS_GEN5(dev) || IS_GEN6(dev))
                 ret = ilk_pipe_crc_ctl_reg(source, &val);
         else