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drm/radeon/kms: more r4xx lvds fixes

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Grab pll ref div from regs at driver init.  r4xx seems very
picky about the dividers for the pll driving lvds.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2009-12-04 16:35:57 -05:00 committed by Dave Airlie
parent 92cde00cba
commit 2a008d0ccd
3 changed files with 16 additions and 6 deletions
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5
drivers/gpu/drm/radeon/atombios_crtc.c
View File

@ -457,9 +457,8 @@ void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
if (encoder->encoder_type !=
DRM_MODE_ENCODER_DAC)
pll_flags |= RADEON_PLL_NO_ODD_POST_DIV;
if (!ASIC_IS_AVIVO(rdev)
&& (encoder->encoder_type ==
DRM_MODE_ENCODER_LVDS))
if (encoder->encoder_type ==
DRM_MODE_ENCODER_LVDS)
pll_flags |= RADEON_PLL_USE_REF_DIV;
}
radeon_encoder = to_radeon_encoder(encoder);

15
drivers/gpu/drm/radeon/radeon_clocks.c
View File

@ -106,8 +106,19 @@ void radeon_get_clock_info(struct drm_device *dev)
ret = radeon_combios_get_clock_info(dev);
if (ret) {
if (p1pll->reference_div < 2)
p1pll->reference_div = 12;
if (p1pll->reference_div < 2) {
if (!ASIC_IS_AVIVO(rdev)) {
u32 tmp = RREG32_PLL(RADEON_PPLL_REF_DIV);
if (ASIC_IS_R300(rdev))
p1pll->reference_div =
(tmp & R300_PPLL_REF_DIV_ACC_MASK) >> R300_PPLL_REF_DIV_ACC_SHIFT;
else
p1pll->reference_div = tmp & RADEON_PPLL_REF_DIV_MASK;
if (p1pll->reference_div < 2)
p1pll->reference_div = 12;
} else
p1pll->reference_div = 12;
}
if (p2pll->reference_div < 2)
p2pll->reference_div = 12;
if (rdev->family < CHIP_RS600) {

2
drivers/gpu/drm/radeon/radeon_legacy_crtc.c
View File

@ -819,8 +819,8 @@ static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
use_bios_divs = true;
}
}
pll_flags |= RADEON_PLL_USE_REF_DIV;
}
pll_flags |= RADEON_PLL_USE_REF_DIV;
}
}
}