From: Alex Deucher Date: Thu, 15 Oct 2009 20:16:35 +0000 (-0400) Subject: drm/radeon/kms: fix connector edid handling X-Git-Tag: firefly_0821_release~11940^2~37 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0294cf4f7f895ddcf284b1ce7cf27a2c9d7106f7;p=firefly-linux-kernel-4.4.55.git drm/radeon/kms: fix connector edid handling Based partly on a patch from Christian Koenig - fix several memory leaks in radeon_connector->edid handling - store edid in radeon_connector->edid in detect() or get_modes() - switch hdmi detect code to use radeon_connector->edid - add support for oem boards multiple connectors that share a ddc line. - short circuit lvds_detect() if have a stored edid Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index 729207a1e83e..5b6067aa08bd 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -400,7 +400,6 @@ static enum drm_connector_status radeon_lvds_detect(struct drm_connector *connec struct radeon_connector *radeon_connector = to_radeon_connector(connector); struct drm_encoder *encoder = radeon_best_single_encoder(connector); enum drm_connector_status ret = connector_status_disconnected; - bool dret; if (encoder) { struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder); @@ -413,12 +412,17 @@ static enum drm_connector_status radeon_lvds_detect(struct drm_connector *connec } /* check for edid as well */ - if (radeon_connector->ddc_bus) { - radeon_i2c_do_lock(radeon_connector, 1); - dret = radeon_ddc_probe(radeon_connector); - radeon_i2c_do_lock(radeon_connector, 0); - if (dret) - ret = connector_status_connected; + if (radeon_connector->edid) + ret = connector_status_connected; + else { + if (radeon_connector->ddc_bus) { + radeon_i2c_do_lock(radeon_connector, 1); + radeon_connector->edid = drm_get_edid(&radeon_connector->base, + &radeon_connector->ddc_bus->adapter); + radeon_i2c_do_lock(radeon_connector, 0); + if (radeon_connector->edid) + ret = connector_status_connected; + } } /* check acpi lid status ??? */ @@ -432,6 +436,8 @@ static void radeon_connector_destroy(struct drm_connector *connector) if (radeon_connector->ddc_bus) radeon_i2c_destroy(radeon_connector->ddc_bus); + if (radeon_connector->edid) + kfree(radeon_connector->edid); kfree(radeon_connector->con_priv); drm_sysfs_connector_remove(connector); drm_connector_cleanup(connector); @@ -519,9 +525,32 @@ static enum drm_connector_status radeon_vga_detect(struct drm_connector *connect radeon_i2c_do_lock(radeon_connector, 1); dret = radeon_ddc_probe(radeon_connector); radeon_i2c_do_lock(radeon_connector, 0); - if (dret) - ret = connector_status_connected; - else { + if (dret) { + if (radeon_connector->edid) { + kfree(radeon_connector->edid); + radeon_connector->edid = NULL; + } + radeon_i2c_do_lock(radeon_connector, 1); + radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter); + radeon_i2c_do_lock(radeon_connector, 0); + + if (!radeon_connector->edid) { + DRM_ERROR("DDC responded but not EDID found for %s\n", + drm_get_connector_name(connector)); + } else { + radeon_connector->use_digital = !!(radeon_connector->edid->input & DRM_EDID_INPUT_DIGITAL); + + /* some oems have boards with separate digital and analog connectors + * with a shared ddc line (often vga + hdmi) + */ + if (radeon_connector->use_digital && radeon_connector->shared_ddc) { + kfree(radeon_connector->edid); + radeon_connector->edid = NULL; + ret = connector_status_disconnected; + } else + ret = connector_status_connected; + } + } else { if (radeon_connector->dac_load_detect) { encoder_funcs = encoder->helper_private; ret = encoder_funcs->detect(encoder, connector); @@ -649,6 +678,10 @@ static enum drm_connector_status radeon_dvi_detect(struct drm_connector *connect dret = radeon_ddc_probe(radeon_connector); radeon_i2c_do_lock(radeon_connector, 0); if (dret) { + if (radeon_connector->edid) { + kfree(radeon_connector->edid); + radeon_connector->edid = NULL; + } radeon_i2c_do_lock(radeon_connector, 1); radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter); radeon_i2c_do_lock(radeon_connector, 0); @@ -659,10 +692,15 @@ static enum drm_connector_status radeon_dvi_detect(struct drm_connector *connect } else { radeon_connector->use_digital = !!(radeon_connector->edid->input & DRM_EDID_INPUT_DIGITAL); - /* if this isn't a digital monitor - then we need to make sure we don't have any - TV conflicts */ - ret = connector_status_connected; + /* some oems have boards with separate digital and analog connectors + * with a shared ddc line (often vga + hdmi) + */ + if ((!radeon_connector->use_digital) && radeon_connector->shared_ddc) { + kfree(radeon_connector->edid); + radeon_connector->edid = NULL; + ret = connector_status_disconnected; + } else + ret = connector_status_connected; } } @@ -787,6 +825,7 @@ radeon_add_atom_connector(struct drm_device *dev, struct radeon_connector *radeon_connector; struct radeon_connector_atom_dig *radeon_dig_connector; uint32_t subpixel_order = SubPixelNone; + bool shared_ddc = false; int ret; /* fixme - tv/cv/din */ @@ -800,6 +839,13 @@ radeon_add_atom_connector(struct drm_device *dev, radeon_connector->devices |= supported_device; return; } + if (radeon_connector->ddc_bus && i2c_bus->valid) { + if (memcmp(&radeon_connector->ddc_bus->rec, i2c_bus, + sizeof(struct radeon_i2c_bus_rec)) == 0) { + radeon_connector->shared_ddc = true; + shared_ddc = true; + } + } } radeon_connector = kzalloc(sizeof(struct radeon_connector), GFP_KERNEL); @@ -810,6 +856,7 @@ radeon_add_atom_connector(struct drm_device *dev, radeon_connector->connector_id = connector_id; radeon_connector->devices = supported_device; + radeon_connector->shared_ddc = shared_ddc; switch (connector_type) { case DRM_MODE_CONNECTOR_VGA: drm_connector_init(dev, &radeon_connector->base, &radeon_vga_connector_funcs, connector_type); diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index a20bf43389b3..c85df4afcb7a 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -334,27 +334,19 @@ static bool radeon_setup_enc_conn(struct drm_device *dev) int radeon_ddc_get_modes(struct radeon_connector *radeon_connector) { - struct edid *edid; int ret = 0; if (!radeon_connector->ddc_bus) return -1; if (!radeon_connector->edid) { radeon_i2c_do_lock(radeon_connector, 1); - edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter); + radeon_connector->edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter); radeon_i2c_do_lock(radeon_connector, 0); - } else - edid = radeon_connector->edid; + } - if (edid) { - /* update digital bits here */ - if (edid->input & DRM_EDID_INPUT_DIGITAL) - radeon_connector->use_digital = 1; - else - radeon_connector->use_digital = 0; - drm_mode_connector_update_edid_property(&radeon_connector->base, edid); - ret = drm_add_edid_modes(&radeon_connector->base, edid); - kfree(edid); + if (radeon_connector->edid) { + drm_mode_connector_update_edid_property(&radeon_connector->base, radeon_connector->edid); + ret = drm_add_edid_modes(&radeon_connector->base, radeon_connector->edid); return ret; } drm_mode_connector_update_edid_property(&radeon_connector->base, NULL); diff --git a/drivers/gpu/drm/radeon/radeon_encoders.c b/drivers/gpu/drm/radeon/radeon_encoders.c index 6cdef27be99d..b70440e8d179 100644 --- a/drivers/gpu/drm/radeon/radeon_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_encoders.c @@ -449,7 +449,7 @@ atombios_digital_setup(struct drm_encoder *encoder, int action) case 1: args.v1.ucMisc = 0; args.v1.ucAction = action; - if (drm_detect_hdmi_monitor((struct edid *)connector->edid_blob_ptr)) + if (drm_detect_hdmi_monitor(radeon_connector->edid)) args.v1.ucMisc |= PANEL_ENCODER_MISC_HDMI_TYPE; args.v1.usPixelClock = cpu_to_le16(radeon_encoder->pixel_clock / 10); if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) { @@ -474,7 +474,7 @@ atombios_digital_setup(struct drm_encoder *encoder, int action) if (dig->coherent_mode) args.v2.ucMisc |= PANEL_ENCODER_MISC_COHERENT; } - if (drm_detect_hdmi_monitor((struct edid *)connector->edid_blob_ptr)) + if (drm_detect_hdmi_monitor(radeon_connector->edid)) args.v2.ucMisc |= PANEL_ENCODER_MISC_HDMI_TYPE; args.v2.usPixelClock = cpu_to_le16(radeon_encoder->pixel_clock / 10); args.v2.ucTruncate = 0; @@ -532,7 +532,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder) switch (connector->connector_type) { case DRM_MODE_CONNECTOR_DVII: case DRM_MODE_CONNECTOR_HDMIB: /* HDMI-B is basically DL-DVI; analog works fine */ - if (drm_detect_hdmi_monitor((struct edid *)connector->edid_blob_ptr)) + if (drm_detect_hdmi_monitor(radeon_connector->edid)) return ATOM_ENCODER_MODE_HDMI; else if (radeon_connector->use_digital) return ATOM_ENCODER_MODE_DVI; @@ -542,7 +542,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder) case DRM_MODE_CONNECTOR_DVID: case DRM_MODE_CONNECTOR_HDMIA: default: - if (drm_detect_hdmi_monitor((struct edid *)connector->edid_blob_ptr)) + if (drm_detect_hdmi_monitor(radeon_connector->edid)) return ATOM_ENCODER_MODE_HDMI; else return ATOM_ENCODER_MODE_DVI; @@ -554,7 +554,7 @@ atombios_get_encoder_mode(struct drm_encoder *encoder) /*if (radeon_output->MonType == MT_DP) return ATOM_ENCODER_MODE_DP; else*/ - if (drm_detect_hdmi_monitor((struct edid *)connector->edid_blob_ptr)) + if (drm_detect_hdmi_monitor(radeon_connector->edid)) return ATOM_ENCODER_MODE_HDMI; else return ATOM_ENCODER_MODE_DVI; diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index 3d2631be073c..b6868fbe7346 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -297,6 +297,8 @@ struct radeon_connector { uint32_t connector_id; uint32_t devices; struct radeon_i2c_chan *ddc_bus; + /* some systems have a an hdmi and vga port with a shared ddc line */ + bool shared_ddc; bool use_digital; /* we need to mind the EDID between detect and get modes due to analog/digital/tvencoder */