[PATCH 14/16] drm/i915: Wire up CRC support for gen3/4

Daniel Vetter
2013-10-16T21:00:19Z

drivers/gpu/drm/i915/i915_debugfs.c | 44 +++++++++++++++++++++++++++++++++++--
1 file changed, 42 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index c504c27..6de9e7e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1947,6 +1947,44 @@ static int display_crc_ctl_open(struct inode *inode, struct file *file)
return single_open(file, display_crc_ctl_show, dev);
}

+static int i9xx_pipe_crc_ctl_reg(struct drm_device *dev,
+ 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_I9XX;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_TV:
+ if (!SUPPORTS_TV(dev))
+ return -EINVAL;
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_TV_PRE;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_DP_B:
+ if (!IS_G4X(dev))
+ return -EINVAL;
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_B_G4X;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_DP_C:
+ if (!IS_G4X(dev))
+ return -EINVAL;
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_C_G4X;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_DP_D:
+ if (!IS_G4X(dev))
+ return -EINVAL;
+ *val = PIPE_CRC_ENABLE | PIPE_CRC_SOURCE_DP_D_G4X;
+ break;
+ case INTEL_PIPE_CRC_SOURCE_NONE:
+ *val = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int ilk_pipe_crc_ctl_reg(enum intel_pipe_crc_source source,
uint32_t *val)
{
@@ -2001,7 +2039,7 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
u32 val;
int ret;

- if (!(INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev)))
+ if (!(INTEL_INFO(dev)->gen >= 3 && !IS_VALLEYVIEW(dev)))
return -ENODEV;

if (pipe_crc->source == source)
@@ -2011,7 +2049,9 @@ static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
if (pipe_crc->source && source)
return -EINVAL;

- if (IS_GEN5(dev) || IS_GEN6(dev))
+ 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);
else
ret = ivb_pipe_crc_ctl_reg(source, &val);
--
1.8.4.rc3