3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deuc...@amd.com>
commit 4e58591c8961b3e31709313f75819f2eec06e322 upstream.
Some plls are shared for DP.
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Reviewed-by: Michel Dänzer <michel.daen...@amd.com>
[bwh: Backported to 3.2: add the dev and rdev variables, previously added
upstream to support DCE6.1 which isn't supported in this version]
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1578,10 +1578,25 @@ static void atombios_crtc_commit(struct
static void atombios_crtc_disable(struct drm_crtc *crtc)
{
struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+ struct drm_device *dev = crtc->dev;
+ struct radeon_device *rdev = dev->dev_private;
struct radeon_atom_ss ss;
+ int i;
atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+ for (i = 0; i < rdev->num_crtc; i++) {
+ if (rdev->mode_info.crtcs[i] &&
+ rdev->mode_info.crtcs[i]->enabled &&
+ i != radeon_crtc->crtc_id &&
+ radeon_crtc->pll_id == rdev->mode_info.crtcs[i]->pll_id) {
+ /* one other crtc is using this pll don't turn
+ * off the pll
+ */
+ goto done;
+ }
+ }
+
switch (radeon_crtc->pll_id) {
case ATOM_PPLL1:
case ATOM_PPLL2:
@@ -1592,6 +1607,7 @@ static void atombios_crtc_disable(struct
default:
break;
}
+done:
radeon_crtc->pll_id = -1;
}
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