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path: root/drivers/gpu/drm/radeon/rv515.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/rv515.c')
-rw-r--r--drivers/gpu/drm/radeon/rv515.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 8ea1573ae820..873eb4b193b4 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -209,19 +209,27 @@ static void rv515_mc_init(struct radeon_device *rdev)
uint32_t rv515_mc_rreg(struct radeon_device *rdev, uint32_t reg)
{
+ unsigned long flags;
uint32_t r;
+ spin_lock_irqsave(&rdev->mc_idx_lock, flags);
WREG32(MC_IND_INDEX, 0x7f0000 | (reg & 0xffff));
r = RREG32(MC_IND_DATA);
WREG32(MC_IND_INDEX, 0);
+ spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
+
return r;
}
void rv515_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rdev->mc_idx_lock, flags);
WREG32(MC_IND_INDEX, 0xff0000 | ((reg) & 0xffff));
WREG32(MC_IND_DATA, (v));
WREG32(MC_IND_INDEX, 0);
+ spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
}
#if defined(CONFIG_DEBUG_FS)