drm/radeon: KV has three PPLLs (v2)

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>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index d59ec49..ed644a4 100644 (file)
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1851,10 +1851,9 @@ 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) ||
+               if ((rdev->family == CHIP_KABINI) ||
                    (rdev->family == CHIP_MULLINS)) {
-                       /* KB/KV/ML has PPLL1 and PPLL2 */
+                       /* KB/ML has PPLL1 and PPLL2 */
                        pll_in_use = radeon_get_pll_use_mask(crtc);
                        if (!(pll_in_use & (1 << ATOM_PPLL2)))
                                return ATOM_PPLL2;
@@ -1863,7 +1862,7 @@ 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;
@@ -2155,6 +2154,7 @@ 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,