So digging out the right ones is a little easier.
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_sideband.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index acd1cfe..9944d81 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -25,7 +25,10 @@
#include "i915_drv.h"
#include "intel_drv.h"
-/* IOSF sideband */
+/*
+ * IOSF sideband, see VLV2_SidebandMsg_HAS.docx and
+ * VLV_VLV2_PUNIT_HAS_0.8.docx
+ */
static int vlv_sideband_rw(struct drm_i915_private *dev_priv, u32 devfn,
u32 port, u32 opcode, u32 addr, u32 *val)
{
--
1.8.3.1
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