diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_sdvo.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_sdvo.c | 96 |
1 files changed, 74 insertions, 22 deletions
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index d3b74ba62b4a..66dc1a54cbf6 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -114,6 +114,9 @@ struct intel_sdvo_priv { /* DDC bus used by this SDVO output */ uint8_t ddc_bus; + /* Mac mini hack -- use the same DDC as the analog connector */ + struct i2c_adapter *analog_ddc_bus; + int save_sdvo_mult; u16 save_active_outputs; struct intel_sdvo_dtd save_input_dtd_1, save_input_dtd_2; @@ -1478,6 +1481,36 @@ intel_sdvo_multifunc_encoder(struct intel_output *intel_output) return (caps > 1); } +static struct drm_connector * +intel_find_analog_connector(struct drm_device *dev) +{ + struct drm_connector *connector; + struct intel_output *intel_output; + + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + intel_output = to_intel_output(connector); + if (intel_output->type == INTEL_OUTPUT_ANALOG) + return connector; + } + return NULL; +} + +static int +intel_analog_is_connected(struct drm_device *dev) +{ + struct drm_connector *analog_connector; + analog_connector = intel_find_analog_connector(dev); + + if (!analog_connector) + return false; + + if (analog_connector->funcs->detect(analog_connector) == + connector_status_disconnected) + return false; + + return true; +} + enum drm_connector_status intel_sdvo_hdmi_sink_detect(struct drm_connector *connector, u16 response) { @@ -1488,6 +1521,15 @@ intel_sdvo_hdmi_sink_detect(struct drm_connector *connector, u16 response) edid = drm_get_edid(&intel_output->base, intel_output->ddc_bus); + + /* when there is no edid and no monitor is connected with VGA + * port, try to use the CRT ddc to read the EDID for DVI-connector + */ + if (edid == NULL && + sdvo_priv->analog_ddc_bus && + !intel_analog_is_connected(intel_output->base.dev)) + edid = drm_get_edid(&intel_output->base, + sdvo_priv->analog_ddc_bus); if (edid != NULL) { /* Don't report the output as connected if it's a DVI-I * connector with a non-digital EDID coming out. @@ -1540,31 +1582,32 @@ static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connect static void intel_sdvo_get_ddc_modes(struct drm_connector *connector) { struct intel_output *intel_output = to_intel_output(connector); + struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv; + int num_modes; /* set the bus switch and get the modes */ - intel_ddc_get_modes(intel_output); + num_modes = intel_ddc_get_modes(intel_output); -#if 0 - struct drm_device *dev = encoder->dev; - struct drm_i915_private *dev_priv = dev->dev_private; - /* Mac mini hack. On this device, I get DDC through the analog, which - * load-detects as disconnected. I fail to DDC through the SDVO DDC, - * but it does load-detect as connected. So, just steal the DDC bits - * from analog when we fail at finding it the right way. + /* + * Mac mini hack. On this device, the DVI-I connector shares one DDC + * link between analog and digital outputs. So, if the regular SDVO + * DDC fails, check to see if the analog output is disconnected, in + * which case we'll look there for the digital DDC data. */ - crt = xf86_config->output[0]; - intel_output = crt->driver_private; - if (intel_output->type == I830_OUTPUT_ANALOG && - crt->funcs->detect(crt) == XF86OutputStatusDisconnected) { - I830I2CInit(pScrn, &intel_output->pDDCBus, GPIOA, "CRTDDC_A"); - edid_mon = xf86OutputGetEDID(crt, intel_output->pDDCBus); - xf86DestroyI2CBusRec(intel_output->pDDCBus, true, true); - } - if (edid_mon) { - xf86OutputSetEDID(output, edid_mon); - modes = xf86OutputGetEDIDModes(output); + if (num_modes == 0 && + sdvo_priv->analog_ddc_bus && + !intel_analog_is_connected(intel_output->base.dev)) { + struct i2c_adapter *digital_ddc_bus; + + /* Switch to the analog ddc bus and try that + */ + digital_ddc_bus = intel_output->ddc_bus; + intel_output->ddc_bus = sdvo_priv->analog_ddc_bus; + + (void) intel_ddc_get_modes(intel_output); + + intel_output->ddc_bus = digital_ddc_bus; } -#endif } /** @@ -1748,6 +1791,8 @@ static void intel_sdvo_destroy(struct drm_connector *connector) intel_i2c_destroy(intel_output->i2c_bus); if (intel_output->ddc_bus) intel_i2c_destroy(intel_output->ddc_bus); + if (sdvo_priv->analog_ddc_bus) + intel_i2c_destroy(sdvo_priv->analog_ddc_bus); if (sdvo_priv->sdvo_lvds_fixed_mode != NULL) drm_mode_destroy(connector->dev, @@ -2074,10 +2119,15 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) } /* setup the DDC bus. */ - if (output_device == SDVOB) + if (output_device == SDVOB) { intel_output->ddc_bus = intel_i2c_create(dev, GPIOE, "SDVOB DDC BUS"); - else + sdvo_priv->analog_ddc_bus = intel_i2c_create(dev, GPIOA, + "SDVOB/VGA DDC BUS"); + } else { intel_output->ddc_bus = intel_i2c_create(dev, GPIOE, "SDVOC DDC BUS"); + sdvo_priv->analog_ddc_bus = intel_i2c_create(dev, GPIOA, + "SDVOC/VGA DDC BUS"); + } if (intel_output->ddc_bus == NULL) goto err_i2c; @@ -2143,6 +2193,8 @@ bool intel_sdvo_init(struct drm_device *dev, int output_device) return true; err_i2c: + if (sdvo_priv->analog_ddc_bus != NULL) + intel_i2c_destroy(sdvo_priv->analog_ddc_bus); if (intel_output->ddc_bus != NULL) intel_i2c_destroy(intel_output->ddc_bus); if (intel_output->i2c_bus != NULL) |