[PATCH 3.10 55/79] drm/radeon: fix DAC interrupt handling on DCE5+

From: Greg Kroah-Hartman
Date: Tue Feb 11 2014 - 14:19:31 EST


3.10-stable review patch. If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deucher@xxxxxxx>

commit e9a321c6b2ac954a7dbf235f419c255a424a1273 upstream.

DCE5 and newer hardware only has 1 DAC. Use the correct
offset. This may fix display problems on certain board
configurations.

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/gpu/drm/radeon/evergreen.c | 4 ++--
drivers/gpu/drm/radeon/si.c | 2 +-
drivers/gpu/drm/radeon/sid.h | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -3792,8 +3792,8 @@ void evergreen_disable_interrupt_state(s
WREG32(GRPH_INT_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET, 0);
}

- /* only one DAC on DCE6 */
- if (!ASIC_IS_DCE6(rdev))
+ /* only one DAC on DCE5 */
+ if (!ASIC_IS_DCE5(rdev))
WREG32(DACA_AUTODETECT_INT_CONTROL, 0);
WREG32(DACB_AUTODETECT_INT_CONTROL, 0);

--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -4519,7 +4519,7 @@ static void si_disable_interrupt_state(s
}

if (!ASIC_IS_NODCE(rdev)) {
- WREG32(DACA_AUTODETECT_INT_CONTROL, 0);
+ WREG32(DAC_AUTODETECT_INT_CONTROL, 0);

tmp = RREG32(DC_HPD1_INT_CONTROL) & DC_HPDx_INT_POLARITY;
WREG32(DC_HPD1_INT_CONTROL, tmp);
--- a/drivers/gpu/drm/radeon/sid.h
+++ b/drivers/gpu/drm/radeon/sid.h
@@ -394,7 +394,7 @@
# define GRPH_PFLIP_INT_MASK (1 << 0)
# define GRPH_PFLIP_INT_TYPE (1 << 8)

-#define DACA_AUTODETECT_INT_CONTROL 0x66c8
+#define DAC_AUTODETECT_INT_CONTROL 0x67c8

#define DC_HPD1_INT_STATUS 0x601c
#define DC_HPD2_INT_STATUS 0x6028


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