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drm/radeon/kms: fix support for original r100

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Original radeon didn't have a connector table in the
bios.  Check for the CRT table and if we have one,
add a VGA connector.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Alex Deucher 2009-10-15 23:38:32 -04:00 committed by Dave Airlie
parent 2d152c6ba8
commit d0c403e950
1 changed files with 19 additions and 2 deletions
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21
drivers/gpu/drm/radeon/radeon_combios.c
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@ -1773,8 +1773,25 @@ bool radeon_get_legacy_connector_info_from_bios(struct drm_device *dev)
DRM_MODE_CONNECTOR_DVII,
&ddc_i2c);
} else {
DRM_DEBUG("No connector info found\n");
return false;
uint16_t crt_info =
combios_get_table_offset(dev, COMBIOS_CRT_INFO_TABLE);
DRM_DEBUG("Found CRT table, assuming VGA connector\n");
if (crt_info) {
radeon_add_legacy_encoder(dev,
radeon_get_encoder_id(dev,
ATOM_DEVICE_CRT1_SUPPORT,
1),
ATOM_DEVICE_CRT1_SUPPORT);
ddc_i2c = combios_setup_i2c_bus(RADEON_GPIO_VGA_DDC);
radeon_add_legacy_connector(dev,
0,
ATOM_DEVICE_CRT1_SUPPORT,
DRM_MODE_CONNECTOR_VGA,
&ddc_i2c);
} else {
DRM_DEBUG("No connector info found\n");
return false;
}
}
}