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authorAlex Deucher <alexander.deucher@amd.com>2013-04-10 09:47:05 -0400
committerAlex Deucher <alexander.deucher@amd.com>2013-04-22 10:39:07 -0400
commit2f86e2ede39a98650c2d465857405ef1c51372b1 (patch)
tree868a64891f2b902d4d902220c5066856be16388b /drivers/gpu/drm/radeon/rv515.c
parent10257a6d8359c41407eb26b7ad7bf710a7e00155 (diff)
drm/radeon: properly lock disp in mc_stop/resume for r5xx-r7xx
Need to wait for the new addresses to take affect before re-enabling the MC. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/rv515.c')
-rw-r--r--drivers/gpu/drm/radeon/rv515.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 5e1ba16c7a7..6a1e5dd5b5e 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -338,6 +338,22 @@ void rv515_mc_stop(struct radeon_device *rdev, struct rv515_mc_save *save)
}
/* wait for the MC to settle */
udelay(100);
+
+ /* lock double buffered regs */
+ for (i = 0; i < rdev->num_crtc; i++) {
+ if (save->crtc_enabled[i]) {
+ tmp = RREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i]);
+ if (!(tmp & AVIVO_D1GRPH_UPDATE_LOCK)) {
+ tmp |= AVIVO_D1GRPH_UPDATE_LOCK;
+ WREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i], tmp);
+ }
+ tmp = RREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i]);
+ if (!(tmp & 1)) {
+ tmp |= 1;
+ WREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i], tmp);
+ }
+ }
+ }
}
void rv515_mc_resume(struct radeon_device *rdev, struct rv515_mc_save *save)
@@ -367,6 +383,33 @@ void rv515_mc_resume(struct radeon_device *rdev, struct rv515_mc_save *save)
}
WREG32(R_000310_VGA_MEMORY_BASE_ADDRESS, (u32)rdev->mc.vram_start);
+ /* unlock regs and wait for update */
+ for (i = 0; i < rdev->num_crtc; i++) {
+ if (save->crtc_enabled[i]) {
+ tmp = RREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + crtc_offsets[i]);
+ if ((tmp & 0x3) != 0) {
+ tmp &= ~0x3;
+ WREG32(AVIVO_D1MODE_MASTER_UPDATE_MODE + crtc_offsets[i], tmp);
+ }
+ tmp = RREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i]);
+ if (tmp & AVIVO_D1GRPH_UPDATE_LOCK) {
+ tmp &= ~AVIVO_D1GRPH_UPDATE_LOCK;
+ WREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i], tmp);
+ }
+ tmp = RREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i]);
+ if (tmp & 1) {
+ tmp &= ~1;
+ WREG32(AVIVO_D1MODE_MASTER_UPDATE_LOCK + crtc_offsets[i], tmp);
+ }
+ for (j = 0; j < rdev->usec_timeout; j++) {
+ tmp = RREG32(AVIVO_D1GRPH_UPDATE + crtc_offsets[i]);
+ if ((tmp & AVIVO_D1GRPH_SURFACE_UPDATE_PENDING) == 0)
+ break;
+ udelay(1);
+ }
+ }
+ }
+
if (rdev->family >= CHIP_R600) {
/* unblackout the MC */
if (rdev->family >= CHIP_RV770)