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

Daniel Vetter
2013-10-16T21:00:20Z

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

Signed-off-by: Daniel Vetter <daniel.vetter@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