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Commit 4e58591c authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: don't disable plls that are in use by other crtcs



Some plls are shared for DP.

Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
parent 523885de
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+14 −0
Original line number Original line Diff line number Diff line
@@ -1682,9 +1682,22 @@ static void atombios_crtc_disable(struct drm_crtc *crtc)
	struct drm_device *dev = crtc->dev;
	struct drm_device *dev = crtc->dev;
	struct radeon_device *rdev = dev->dev_private;
	struct radeon_device *rdev = dev->dev_private;
	struct radeon_atom_ss ss;
	struct radeon_atom_ss ss;
	int i;


	atombios_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
	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) {
	switch (radeon_crtc->pll_id) {
	case ATOM_PPLL1:
	case ATOM_PPLL1:
	case ATOM_PPLL2:
	case ATOM_PPLL2:
@@ -1701,6 +1714,7 @@ static void atombios_crtc_disable(struct drm_crtc *crtc)
	default:
	default:
		break;
		break;
	}
	}
done:
	radeon_crtc->pll_id = -1;
	radeon_crtc->pll_id = -1;
}
}