[PATCH 3.13.y-ckt 025/103] drm/radeon: KV has three PPLLs (v2)

Kamal Mostafa
2015-02-19T01:01:58Z

From: Alex Deucher <alexander.deucher@amd.com>

commit fbedf1c3fc3a1e9f249c2efe2f4553d8df9d86d3 upstream.

Enable all three in the driver. Early documentation
indicated the 3rd one was used for something else, but
that is not the case.

v2: handle disable as well

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[ kamal: backport to 3.13-stable: context ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
drivers/gpu/drm/radeon/atombios_crtc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index aedfc27..86124f2 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1714,9 +1714,8 @@ static int radeon_atom_pick_pll(struct drm_crtc *crtc)
return pll;
}
/* otherwise, pick one of the plls */
- if ((rdev->family == CHIP_KAVERI) ||
- (rdev->family == CHIP_KABINI)) {
- /* KB/KV has PPLL1 and PPLL2 */
+ if ((rdev->family == CHIP_KABINI)) {
+ /* KB has PPLL1 and PPLL2 */
pll_in_use = radeon_get_pll_use_mask(crtc);
if (!(pll_in_use & (1 << ATOM_PPLL2)))
return ATOM_PPLL2;
@@ -1725,7 +1724,7 @@ static int radeon_atom_pick_pll(struct drm_crtc *crtc)
DRM_ERROR("unable to allocate a PPLL\n");
return ATOM_PPLL_INVALID;
} else {
- /* CI has PPLL0, PPLL1, and PPLL2 */
+ /* CI/KV has PPLL0, PPLL1, and PPLL2 */
pll_in_use = radeon_get_pll_use_mask(crtc);
if (!(pll_in_use & (1 << ATOM_PPLL2)))
return ATOM_PPLL2;
@@ -2013,6 +2012,7 @@ static void atombios_crtc_disable(struct drm_crtc *crtc)
case ATOM_PPLL0:
/* disable the ppll */
if ((rdev->family == CHIP_ARUBA) ||
+ (rdev->family == CHIP_KAVERI) ||
(rdev->family == CHIP_BONAIRE) ||
(rdev->family == CHIP_HAWAII))
atombios_crtc_program_pll(crtc, radeon_crtc->crtc_id, radeon_crtc->pll_id,
--
1.9.1