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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
This commit is contained in:
Alex Deucher 2013-04-10 09:47:05 -04:00
parent 10257a6d83
commit 2f86e2ede3
2 changed files with 44 additions and 0 deletions
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1
drivers/gpu/drm/radeon/r500_reg.h
View File

@ -358,6 +358,7 @@
#define AVIVO_D1CRTC_STATUS_HV_COUNT 0x60ac
#define AVIVO_D1CRTC_STEREO_CONTROL 0x60c4
#define AVIVO_D1MODE_MASTER_UPDATE_LOCK 0x60e0
#define AVIVO_D1MODE_MASTER_UPDATE_MODE 0x60e4
/* master controls */

43
drivers/gpu/drm/radeon/rv515.c
View File

@ -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)