[Intel-gfx] [PATCH 15/16] drm/i915: Wire up gen2 CRC support

[Daniel Vetter]

Really simple, and we don't even have working frame numbers.

Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 6de9e7e..ff6970b 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1947,6 +1947,20 @@ static int display_crc_ctl_open(struct inode *inode, struct file *file)
 	return single_open(file, display_crc_ctl_show, dev);
 }
 
+static int i8xx_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;
+		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)
@@ -2049,7 +2063,9 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
 	if (pipe_crc->source && source)
 		return -EINVAL;
 
-	if (INTEL_INFO(dev)->gen < 5)
+	if (IS_GEN2(dev))
+		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_GEN5(dev) || IS_GEN6(dev))
 		ret = ilk_pipe_crc_ctl_reg(source, &val);
-- 
1.8.4.rc3