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drm/radeon/kms: cleanup atombios_adjust_pll()

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The logic was messy and hard to follow.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-10-25 11:34:51 -04:00 committed by Dave Airlie
parent 00dfb8df5b
commit b4f15f808b
1 changed files with 13 additions and 28 deletions
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41
drivers/gpu/drm/radeon/atombios_crtc.c
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@ -638,38 +638,23 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
if (ss_enabled && ss->percentage)
args.v3.sInput.ucDispPllConfig |=
DISPPLL_CONFIG_SS_ENABLE;
if (radeon_encoder->devices & (ATOM_DEVICE_DFP_SUPPORT) ||
radeon_encoder_is_dp_bridge(encoder)) {
if (encoder_mode == ATOM_ENCODER_MODE_DP) {
args.v3.sInput.ucDispPllConfig |=
DISPPLL_CONFIG_COHERENT_MODE;
/* 16200 or 27000 */
args.v3.sInput.usPixelClock = cpu_to_le16(dp_clock / 10);
} else if (radeon_encoder->devices & (ATOM_DEVICE_DFP_SUPPORT)) {
struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
if (encoder_mode == ATOM_ENCODER_MODE_DP) {
if (encoder_mode == ATOM_ENCODER_MODE_HDMI)
/* deep color support */
args.v3.sInput.usPixelClock =
cpu_to_le16((mode->clock * bpc / 8) / 10);
if (dig->coherent_mode)
args.v3.sInput.ucDispPllConfig |=
DISPPLL_CONFIG_COHERENT_MODE;
/* 16200 or 27000 */
args.v3.sInput.usPixelClock = cpu_to_le16(dp_clock / 10);
} else {
if (encoder_mode == ATOM_ENCODER_MODE_HDMI) {
/* deep color support */
args.v3.sInput.usPixelClock =
cpu_to_le16((mode->clock * bpc / 8) / 10);
}
if (dig->coherent_mode)
args.v3.sInput.ucDispPllConfig |=
DISPPLL_CONFIG_COHERENT_MODE;
if (mode->clock > 165000)
args.v3.sInput.ucDispPllConfig |=
DISPPLL_CONFIG_DUAL_LINK;
}
} else if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
if (encoder_mode == ATOM_ENCODER_MODE_DP) {
if (mode->clock > 165000)
args.v3.sInput.ucDispPllConfig |=
DISPPLL_CONFIG_COHERENT_MODE;
/* 16200 or 27000 */
args.v3.sInput.usPixelClock = cpu_to_le16(dp_clock / 10);
} else if (encoder_mode != ATOM_ENCODER_MODE_LVDS) {
if (mode->clock > 165000)
args.v3.sInput.ucDispPllConfig |=
DISPPLL_CONFIG_DUAL_LINK;
}
DISPPLL_CONFIG_DUAL_LINK;
}
if (radeon_encoder_is_dp_bridge(encoder)) {
struct drm_encoder *ext_encoder = radeon_atom_get_external_encoder(encoder);