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drm/radeon/kms: rework spread spectrum handling

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This patch reworks spread spectrum handling to enable it
properly on lvds and DP/eDP links.  It also fixes several
bugs in the old spread spectrum code.

- Use the ss recommended reference divider if available
when calculating the pll
- Use the proper ss command tables on pre-DCE3 asics
- Avoid reading past the end of the ss info tables
- Enable ss on evergreen asics (lvds, dp, tmds)
- Enable ss on DP/eDP links

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher
2010-10-04 17:13:01 -04:00
committed by Dave Airlie
parent 48dfaaeb66
commit ba032a58d1
4 changed files with 307 additions and 102 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/radeon/radeon_encoders.c
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@@ -529,9 +529,9 @@ atombios_digital_setup(struct drm_encoder *encoder, int action)
args.v1.ucMisc |= PANEL_ENCODER_MISC_HDMI_TYPE;
args.v1.usPixelClock = cpu_to_le16(radeon_encoder->pixel_clock / 10);
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
if (dig->lvds_misc & ATOM_PANEL_MISC_DUAL)
if (dig->lcd_misc & ATOM_PANEL_MISC_DUAL)
args.v1.ucMisc |= PANEL_ENCODER_MISC_DUAL;
if (dig->lvds_misc & ATOM_PANEL_MISC_888RGB)
if (dig->lcd_misc & ATOM_PANEL_MISC_888RGB)
args.v1.ucMisc |= (1 << 1);
} else {
if (dig->linkb)
@@ -558,18 +558,18 @@ atombios_digital_setup(struct drm_encoder *encoder, int action)
args.v2.ucTemporal = 0;
args.v2.ucFRC = 0;
if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
if (dig->lvds_misc & ATOM_PANEL_MISC_DUAL)
if (dig->lcd_misc & ATOM_PANEL_MISC_DUAL)
args.v2.ucMisc |= PANEL_ENCODER_MISC_DUAL;
if (dig->lvds_misc & ATOM_PANEL_MISC_SPATIAL) {
if (dig->lcd_misc & ATOM_PANEL_MISC_SPATIAL) {
args.v2.ucSpatial = PANEL_ENCODER_SPATIAL_DITHER_EN;
if (dig->lvds_misc & ATOM_PANEL_MISC_888RGB)
if (dig->lcd_misc & ATOM_PANEL_MISC_888RGB)
args.v2.ucSpatial |= PANEL_ENCODER_SPATIAL_DITHER_DEPTH;
}
if (dig->lvds_misc & ATOM_PANEL_MISC_TEMPORAL) {
if (dig->lcd_misc & ATOM_PANEL_MISC_TEMPORAL) {
args.v2.ucTemporal = PANEL_ENCODER_TEMPORAL_DITHER_EN;
if (dig->lvds_misc & ATOM_PANEL_MISC_888RGB)
if (dig->lcd_misc & ATOM_PANEL_MISC_888RGB)
args.v2.ucTemporal |= PANEL_ENCODER_TEMPORAL_DITHER_DEPTH;
if (((dig->lvds_misc >> ATOM_PANEL_MISC_GREY_LEVEL_SHIFT) & 0x3) == 2)
if (((dig->lcd_misc >> ATOM_PANEL_MISC_GREY_LEVEL_SHIFT) & 0x3) == 2)
args.v2.ucTemporal |= PANEL_ENCODER_TEMPORAL_LEVEL_4;
}
} else {