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drm/radeon: Unbreak HPD handling for r600+ 

We end up reading the interrupt register for HPD5, and then writing it
to HPD6 which on systems without anything using HPD5 results in
permanently disabling hotplug on one of the display outputs after the
first time we acknowledge a hotplug interrupt from the GPU.

This code is really bad. But for now, let's just fix this. I will
hopefully have a large patch series to refactor all of this soon.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Lyude <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lyude 2017-05-11 19:31:12 -04:00 committed by Alex Deucher
parent 2275a3a2fe
commit 3d18e33735
4 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/radeon/cik.c
View File

@ -7401,7 +7401,7 @@ static inline void cik_irq_ack(struct radeon_device *rdev)
WREG32(DC_HPD5_INT_CONTROL, tmp);
}
if (rdev->irq.stat_regs.cik.disp_int_cont5 & DC_HPD6_INTERRUPT) {
tmp = RREG32(DC_HPD5_INT_CONTROL);
tmp = RREG32(DC_HPD6_INT_CONTROL);
tmp |= DC_HPDx_INT_ACK;
WREG32(DC_HPD6_INT_CONTROL, tmp);
}
@ -7431,7 +7431,7 @@ static inline void cik_irq_ack(struct radeon_device *rdev)
WREG32(DC_HPD5_INT_CONTROL, tmp);
}
if (rdev->irq.stat_regs.cik.disp_int_cont5 & DC_HPD6_RX_INTERRUPT) {
tmp = RREG32(DC_HPD5_INT_CONTROL);
tmp = RREG32(DC_HPD6_INT_CONTROL);
tmp |= DC_HPDx_RX_INT_ACK;
WREG32(DC_HPD6_INT_CONTROL, tmp);
}

4
drivers/gpu/drm/radeon/evergreen.c
View File

@ -4927,7 +4927,7 @@ static void evergreen_irq_ack(struct radeon_device *rdev)
WREG32(DC_HPD5_INT_CONTROL, tmp);
}
if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_INTERRUPT) {
tmp = RREG32(DC_HPD5_INT_CONTROL);
tmp = RREG32(DC_HPD6_INT_CONTROL);
tmp |= DC_HPDx_INT_ACK;
WREG32(DC_HPD6_INT_CONTROL, tmp);
}
@ -4958,7 +4958,7 @@ static void evergreen_irq_ack(struct radeon_device *rdev)
WREG32(DC_HPD5_INT_CONTROL, tmp);
}
if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_RX_INTERRUPT) {
tmp = RREG32(DC_HPD5_INT_CONTROL);
tmp = RREG32(DC_HPD6_INT_CONTROL);
tmp |= DC_HPDx_RX_INT_ACK;
WREG32(DC_HPD6_INT_CONTROL, tmp);
}

2
drivers/gpu/drm/radeon/r600.c
View File

@ -3988,7 +3988,7 @@ static void r600_irq_ack(struct radeon_device *rdev)
WREG32(DC_HPD5_INT_CONTROL, tmp);
}
if (rdev->irq.stat_regs.r600.disp_int_cont2 & DC_HPD6_INTERRUPT) {
tmp = RREG32(DC_HPD5_INT_CONTROL);
tmp = RREG32(DC_HPD6_INT_CONTROL);
tmp |= DC_HPDx_INT_ACK;
WREG32(DC_HPD6_INT_CONTROL, tmp);
}

4
drivers/gpu/drm/radeon/si.c
View File

@ -6317,7 +6317,7 @@ static inline void si_irq_ack(struct radeon_device *rdev)
WREG32(DC_HPD5_INT_CONTROL, tmp);
}
if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_INTERRUPT) {
tmp = RREG32(DC_HPD5_INT_CONTROL);
tmp = RREG32(DC_HPD6_INT_CONTROL);
tmp |= DC_HPDx_INT_ACK;
WREG32(DC_HPD6_INT_CONTROL, tmp);
}
@ -6348,7 +6348,7 @@ static inline void si_irq_ack(struct radeon_device *rdev)
WREG32(DC_HPD5_INT_CONTROL, tmp);
}
if (rdev->irq.stat_regs.evergreen.disp_int_cont5 & DC_HPD6_RX_INTERRUPT) {
tmp = RREG32(DC_HPD5_INT_CONTROL);
tmp = RREG32(DC_HPD6_INT_CONTROL);
tmp |= DC_HPDx_RX_INT_ACK;
WREG32(DC_HPD6_INT_CONTROL, tmp);
}