From patchwork Fri Sep 28 13:14:59 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [1/2, Quantal] drm/nvd0/disp: hopefully fix selection of 6/8bpc mode on DP outputs Date: Fri, 28 Sep 2012 03:14:59 -0000 From: Seth Forshee X-Patchwork-Id: 187779 Message-Id: <1348838100-3403-2-git-send-email-seth.forshee@canonical.com> To: kernel-team@lists.ubuntu.com From: Ben Skeggs I have a very limited number of traces available for DP on NVD9+, but, these values produce the same as the binary driver on a confirmed 18-bit eDP panel and a confirmed 24-bit eDP panel (Retina MBP). It's interesting that the bitfield values also match the MODE_CTRL values that control the same thing on nv50:nvd9. Signed-off-by: Ben Skeggs (cherry picked from commit a348cd5fd85dbca7260ef865c5def85929932861) BugLink: http://bugs.launchpad.net/bugs/1058088 Signed-off-by: Seth Forshee --- drivers/gpu/drm/nouveau/nvd0_display.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c index c50b075..97c0878 100644 --- a/drivers/gpu/drm/nouveau/nvd0_display.c +++ b/drivers/gpu/drm/nouveau/nvd0_display.c @@ -1508,10 +1508,10 @@ nvd0_sor_mode_set(struct drm_encoder *encoder, struct drm_display_mode *umode, case OUTPUT_DP: if (nv_connector->base.display_info.bpc == 6) { nv_encoder->dp.datarate = mode->clock * 18 / 8; - syncs |= 0x00000140; + syncs |= 0x00000002 << 6; } else { nv_encoder->dp.datarate = mode->clock * 24 / 8; - syncs |= 0x00000180; + syncs |= 0x00000005 << 6; } if (nv_encoder->dcb->sorconf.link & 1)