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drm/radeon/kms: never combine LVDS with another encoder

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When linking multiple encoders to a connector, make sure
to not link LVDS with another connector.  Some bioses
have the same i2c line for LVDS and VGA.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2009-12-18 11:28:22 -05:00 committed by Dave Airlie
parent 3642133816
commit f56cd64f5f
1 changed files with 23 additions and 26 deletions
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49
drivers/gpu/drm/radeon/radeon_atombios.c
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@ -745,8 +745,7 @@ bool radeon_get_atom_connector_info_from_supported_devices_table(struct
else
radeon_add_legacy_encoder(dev,
radeon_get_encoder_id(dev,
(1 <<
i),
(1 << i),
dac),
(1 << i));
}
@ -758,32 +757,30 @@ bool radeon_get_atom_connector_info_from_supported_devices_table(struct
if (bios_connectors[j].valid && (i != j)) {
if (bios_connectors[i].line_mux ==
bios_connectors[j].line_mux) {
if (((bios_connectors[i].
devices &
(ATOM_DEVICE_DFP_SUPPORT))
&& (bios_connectors[j].
devices &
(ATOM_DEVICE_CRT_SUPPORT)))
||
((bios_connectors[j].
devices &
(ATOM_DEVICE_DFP_SUPPORT))
&& (bios_connectors[i].
devices &
(ATOM_DEVICE_CRT_SUPPORT)))) {
bios_connectors[i].
devices |=
bios_connectors[j].
devices;
bios_connectors[i].
connector_type =
DRM_MODE_CONNECTOR_DVII;
if (bios_connectors[j].devices &
(ATOM_DEVICE_DFP_SUPPORT))
/* make sure not to combine LVDS */
if (bios_connectors[i].devices & (ATOM_DEVICE_LCD_SUPPORT)) {
bios_connectors[i].line_mux = 53;
bios_connectors[i].ddc_bus.valid = false;
continue;
}
if (bios_connectors[j].devices & (ATOM_DEVICE_LCD_SUPPORT)) {
bios_connectors[j].line_mux = 53;
bios_connectors[j].ddc_bus.valid = false;
continue;
}
/* combine analog and digital for DVI-I */
if (((bios_connectors[i].devices & (ATOM_DEVICE_DFP_SUPPORT)) &&
(bios_connectors[j].devices & (ATOM_DEVICE_CRT_SUPPORT))) ||
((bios_connectors[j].devices & (ATOM_DEVICE_DFP_SUPPORT)) &&
(bios_connectors[i].devices & (ATOM_DEVICE_CRT_SUPPORT)))) {
bios_connectors[i].devices |=
bios_connectors[j].devices;
bios_connectors[i].connector_type =
DRM_MODE_CONNECTOR_DVII;
if (bios_connectors[j].devices & (ATOM_DEVICE_DFP_SUPPORT))
bios_connectors[i].hpd =
bios_connectors[j].hpd;
bios_connectors[j].
valid = false;
bios_connectors[j].valid = false;
}
}
}