diff options
| author | Dave Airlie <airlied@redhat.com> | 2010-02-08 13:16:55 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2010-02-09 08:54:42 +1000 |
| commit | 4b9d2a2112163a757943c78ea98587fc9e828641 (patch) | |
| tree | c929d8d3dfb7c4fc7c8231ae8f7e987094544096 /drivers/gpu | |
| parent | 1ca137cdcd4e11af03dbe073d48a470b833a456d (diff) | |
drm/radeon/kms: don't crash if no DDC bus on VGA/DVI connector.
This is strange - like really really strange, twilight zone of strange.
VGA ports have DDC buses, but sometimes for some reasons the BIOS
says we don't and we oops - AMD mentioned bios bugs so we'll have
to add quirks.
reported on irc by nirbheek and
https://bugzilla.redhat.com/show_bug.cgi?id=554323
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_connectors.c | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_display.c | 11 |
2 files changed, 22 insertions, 9 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index 2d8e5a70f28..23818854001 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -580,16 +580,18 @@ static enum drm_connector_status radeon_vga_detect(struct drm_connector *connect struct radeon_connector *radeon_connector = to_radeon_connector(connector); struct drm_encoder *encoder; struct drm_encoder_helper_funcs *encoder_funcs; - bool dret; + bool dret = false; enum drm_connector_status ret = connector_status_disconnected; encoder = radeon_best_single_encoder(connector); if (!encoder) ret = connector_status_disconnected; - radeon_i2c_do_lock(radeon_connector->ddc_bus, 1); - dret = radeon_ddc_probe(radeon_connector); - radeon_i2c_do_lock(radeon_connector->ddc_bus, 0); + if (radeon_connector->ddc_bus) { + radeon_i2c_do_lock(radeon_connector->ddc_bus, 1); + dret = radeon_ddc_probe(radeon_connector); + radeon_i2c_do_lock(radeon_connector->ddc_bus, 0); + } if (dret) { if (radeon_connector->edid) { kfree(radeon_connector->edid); @@ -740,11 +742,13 @@ static enum drm_connector_status radeon_dvi_detect(struct drm_connector *connect struct drm_mode_object *obj; int i; enum drm_connector_status ret = connector_status_disconnected; - bool dret; + bool dret = false; - radeon_i2c_do_lock(radeon_connector->ddc_bus, 1); - dret = radeon_ddc_probe(radeon_connector); - radeon_i2c_do_lock(radeon_connector->ddc_bus, 0); + if (radeon_connector->ddc_bus) { + radeon_i2c_do_lock(radeon_connector->ddc_bus, 1); + dret = radeon_ddc_probe(radeon_connector); + radeon_i2c_do_lock(radeon_connector->ddc_bus, 0); + } if (dret) { if (radeon_connector->edid) { kfree(radeon_connector->edid); diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 6a92f994cc2..7e17a362b54 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -278,7 +278,7 @@ static void radeon_print_display_setup(struct drm_device *dev) DRM_INFO(" %s\n", connector_names[connector->connector_type]); if (radeon_connector->hpd.hpd != RADEON_HPD_NONE) DRM_INFO(" %s\n", hpd_names[radeon_connector->hpd.hpd]); - if (radeon_connector->ddc_bus) + if (radeon_connector->ddc_bus) { DRM_INFO(" DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n", radeon_connector->ddc_bus->rec.mask_clk_reg, radeon_connector->ddc_bus->rec.mask_data_reg, @@ -288,6 +288,15 @@ static void radeon_print_display_setup(struct drm_device *dev) radeon_connector->ddc_bus->rec.en_data_reg, radeon_connector->ddc_bus->rec.y_clk_reg, radeon_connector->ddc_bus->rec.y_data_reg); + } else { + if (connector->connector_type == DRM_MODE_CONNECTOR_VGA || + connector->connector_type == DRM_MODE_CONNECTOR_DVII || + connector->connector_type == DRM_MODE_CONNECTOR_DVID || + connector->connector_type == DRM_MODE_CONNECTOR_DVIA || + connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || + connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) + DRM_INFO(" DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n"); + } DRM_INFO(" Encoders:\n"); list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { radeon_encoder = to_radeon_encoder(encoder); |