From: Alex Deucher <alexdeucher@gmail.com>
To: airlied@gmail.com, dri-devel@lists.freedesktop.org
Cc: stable@kernel.org
Subject: [PATCH] drm/radeon/kms: prefer legacy pll algo for tv-out
Date: Tue, 22 Mar 2011 01:46:12 -0400 [thread overview]
Message-ID: <1300772772-22134-1-git-send-email-alexdeucher@gmail.com> (raw)
ntsc seems to work fine with either algo, some
pal TVs seem pickier.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=30832
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
---
drivers/gpu/drm/radeon/atombios_crtc.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 3cd3234..10e41af 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -957,7 +957,11 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode
/* adjust pixel clock as needed */
adjusted_clock = atombios_adjust_pll(crtc, mode, pll, ss_enabled, &ss);
- if (ASIC_IS_AVIVO(rdev))
+ if (radeon_encoder->active_device & (ATOM_DEVICE_TV_SUPPORT))
+ /* TV seems to prefer the legacy algo on some boards */
+ radeon_compute_pll_legacy(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div,
+ &ref_div, &post_div);
+ else if (ASIC_IS_AVIVO(rdev))
radeon_compute_pll_avivo(pll, adjusted_clock, &pll_clock, &fb_div, &frac_fb_div,
&ref_div, &post_div);
else
--
1.7.1.1
reply other threads:[~2011-03-22 5:46 UTC|newest]
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