drm/i915: crc support for hsw
hw designers decided to change the CRC registers and coalesce them all
into one. Otherwise nothing changed. I've opted for a new hsw_ version
to grab the crc sample since hsw+1 will have the same crc registers,
but different interrupt source registers. So this little helper
function will come handy there.
Also refactor the display error handler with a neat pipe loop.
v2: Use for_each_pipe.
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index eaf1268..156a1a4 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1228,6 +1228,15 @@
wake_up_interruptible(&pipe_crc->wq);
}
+static void hsw_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ display_pipe_crc_update(dev, pipe,
+ I915_READ(PIPE_CRC_RES_1_IVB(pipe)),
+ 0, 0, 0, 0);
+}
+
static void ivb_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -1252,6 +1261,7 @@
I915_READ(PIPE_CRC_RES_RES2_ILK(pipe)));
}
#else
+static inline void hsw_pipe_crc_update(struct drm_device *dev, int pipe) {}
static inline void ivb_pipe_crc_update(struct drm_device *dev, int pipe) {}
static inline void ilk_pipe_crc_update(struct drm_device *dev, int pipe) {}
#endif
@@ -1418,30 +1428,26 @@
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 err_int = I915_READ(GEN7_ERR_INT);
+ enum pipe pipe;
if (err_int & ERR_INT_POISON)
DRM_ERROR("Poison interrupt\n");
- if (err_int & ERR_INT_FIFO_UNDERRUN_A)
- if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false))
- DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n");
+ for_each_pipe(pipe) {
+ if (err_int & ERR_INT_FIFO_UNDERRUN(pipe)) {
+ if (intel_set_cpu_fifo_underrun_reporting(dev, pipe,
+ false))
+ DRM_DEBUG_DRIVER("Pipe %c FIFO underrun\n",
+ pipe_name(pipe));
+ }
- if (err_int & ERR_INT_FIFO_UNDERRUN_B)
- if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false))
- DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n");
-
- if (err_int & ERR_INT_FIFO_UNDERRUN_C)
- if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_C, false))
- DRM_DEBUG_DRIVER("Pipe C FIFO underrun\n");
-
- if (err_int & ERR_INT_PIPE_CRC_DONE_A)
- ivb_pipe_crc_update(dev, PIPE_A);
-
- if (err_int & ERR_INT_PIPE_CRC_DONE_B)
- ivb_pipe_crc_update(dev, PIPE_B);
-
- if (err_int & ERR_INT_PIPE_CRC_DONE_C)
- ivb_pipe_crc_update(dev, PIPE_C);
+ if (err_int & ERR_INT_PIPE_CRC_DONE(pipe)) {
+ if (IS_IVYBRIDGE(dev))
+ ivb_pipe_crc_update(dev, pipe);
+ else
+ hsw_pipe_crc_update(dev, pipe);
+ }
+ }
I915_WRITE(GEN7_ERR_INT, err_int);
}