提交 d56ef9c8 编写于 作者: A Alex Deucher 提交者: Dave Airlie

drm/radeon/kms/atom: Fix DVO support

DVO in 12 bit mode (which seems to be the most common
config) requires 2x ppll.

Fixes fdo bug 21857.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
上级 8f552a66
......@@ -483,8 +483,14 @@ void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
atom_execute_table(rdev->mode_info.atom_context,
index, (uint32_t *)&adjust_pll_args);
adjusted_clock = le16_to_cpu(adjust_pll_args.usPixelClock) * 10;
} else
adjusted_clock = mode->clock;
} else {
/* DVO wants 2x pixel clock if the DVO chip is in 12 bit mode */
if (ASIC_IS_AVIVO(rdev) &&
(radeon_encoder->encoder_id == ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1))
adjusted_clock = mode->clock * 2;
else
adjusted_clock = mode->clock;
}
if (radeon_crtc->crtc_id == 0)
pll = &rdev->clock.p1pll;
......
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