diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_display.c')
-rw-r--r-- | drivers/gpu/drm/msm/dp/dp_display.c | 349 |
1 files changed, 142 insertions, 207 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 4f89c99395..78464c395c 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -49,13 +49,11 @@ enum { ST_CONNECTED, ST_DISCONNECT_PENDING, ST_DISPLAY_OFF, - ST_SUSPENDED, }; enum { EV_NO_EVENT, /* hpd events */ - EV_HPD_INIT_SETUP, EV_HPD_PLUG_INT, EV_IRQ_HPD_INT, EV_HPD_UNPLUG_INT, @@ -281,11 +279,6 @@ static int dp_display_bind(struct device *dev, struct device *master, dp->dp_display.drm_dev = drm; priv->dp[dp->id] = &dp->dp_display; - rc = dp->parser->parse(dp->parser); - if (rc) { - DRM_ERROR("device tree parsing failed\n"); - goto end; - } dp->drm_dev = drm; @@ -296,11 +289,6 @@ static int dp_display_bind(struct device *dev, struct device *master, goto end; } - rc = dp_power_client_init(dp->power); - if (rc) { - DRM_ERROR("Power client create failed\n"); - goto end; - } rc = dp_register_audio_driver(dev, dp->audio); if (rc) { @@ -325,15 +313,10 @@ static void dp_display_unbind(struct device *dev, struct device *master, struct dp_display_private *dp = dev_get_dp_display_private(dev); struct msm_drm_private *priv = dev_get_drvdata(master); - /* disable all HPD interrupts */ - if (dp->core_initialized) - dp_catalog_hpd_config_intr(dp->catalog, DP_DP_HPD_INT_MASK, false); - kthread_stop(dp->ev_tsk); of_dp_aux_depopulate_bus(dp->aux); - dp_power_client_deinit(dp->power); dp_unregister_audio_driver(dev, dp->audio); dp_aux_unregister(dp->aux); dp->drm_dev = NULL; @@ -357,12 +340,11 @@ static void dp_display_send_hpd_event(struct msm_dp *dp_display) drm_helper_hpd_irq_event(connector->dev); } - static int dp_display_send_hpd_notification(struct dp_display_private *dp, bool hpd) { - if ((hpd && dp->dp_display.is_connected) || - (!hpd && !dp->dp_display.is_connected)) { + if ((hpd && dp->dp_display.link_ready) || + (!hpd && !dp->dp_display.link_ready)) { drm_dbg_dp(dp->drm_dev, "HPD already %s\n", (hpd ? "on" : "off")); return 0; @@ -378,7 +360,7 @@ static int dp_display_send_hpd_notification(struct dp_display_private *dp, dp->panel->downstream_ports); } - dp->dp_display.is_connected = hpd; + dp->dp_display.link_ready = hpd; drm_dbg_dp(dp->drm_dev, "type=%d hpd=%d\n", dp->dp_display.connector_type, hpd); @@ -581,6 +563,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data) { u32 state; int ret; + struct platform_device *pdev = dp->dp_display.pdev; mutex_lock(&dp->event_mutex); @@ -588,7 +571,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data) drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n", dp->dp_display.connector_type, state); - if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) { + if (state == ST_DISPLAY_OFF) { mutex_unlock(&dp->event_mutex); return 0; } @@ -605,9 +588,17 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data) return 0; } - ret = dp_display_usbpd_configure_cb(&dp->dp_display.pdev->dev); + ret = pm_runtime_resume_and_get(&pdev->dev); + if (ret) { + DRM_ERROR("failed to pm_runtime_resume\n"); + mutex_unlock(&dp->event_mutex); + return ret; + } + + ret = dp_display_usbpd_configure_cb(&pdev->dev); if (ret) { /* link train failed */ dp->hpd_state = ST_DISCONNECTED; + pm_runtime_put_sync(&pdev->dev); } else { dp->hpd_state = ST_MAINLINK_READY; } @@ -637,6 +628,7 @@ static void dp_display_handle_plugged_change(struct msm_dp *dp_display, static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data) { u32 state; + struct platform_device *pdev = dp->dp_display.pdev; mutex_lock(&dp->event_mutex); @@ -664,6 +656,7 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data) dp_display_host_phy_exit(dp); dp->hpd_state = ST_DISCONNECTED; dp_display_notify_disconnect(&dp->dp_display.pdev->dev); + pm_runtime_put_sync(&pdev->dev); mutex_unlock(&dp->event_mutex); return 0; } @@ -687,6 +680,7 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data) dp->dp_display.connector_type, state); /* uevent will complete disconnection part */ + pm_runtime_put_sync(&pdev->dev); mutex_unlock(&dp->event_mutex); return 0; } @@ -702,7 +696,7 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data) drm_dbg_dp(dp->drm_dev, "Before, type=%d hpd_state=%d\n", dp->dp_display.connector_type, state); - if (state == ST_DISPLAY_OFF || state == ST_SUSPENDED) { + if (state == ST_DISPLAY_OFF) { mutex_unlock(&dp->event_mutex); return 0; } @@ -726,7 +720,6 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data) static void dp_display_deinit_sub_modules(struct dp_display_private *dp) { - dp_debug_put(dp->debug); dp_audio_put(dp->audio); dp_panel_put(dp->panel); dp_aux_put(dp->aux); @@ -924,7 +917,7 @@ int dp_display_set_plugged_cb(struct msm_dp *dp_display, dp_display->plugged_cb = fn; dp_display->codec_dev = codec_dev; - plugged = dp_display->is_connected; + plugged = dp_display->link_ready; dp_display_handle_plugged_change(dp_display, plugged); return 0; @@ -1114,9 +1107,6 @@ static int hpd_event_thread(void *data) spin_unlock_irqrestore(&dp_priv->event_lock, flag); switch (todo->event_id) { - case EV_HPD_INIT_SETUP: - dp_display_host_init(dp_priv); - break; case EV_HPD_PLUG_INT: dp_hpd_plug_handle(dp_priv, todo->data); break; @@ -1195,27 +1185,21 @@ static irqreturn_t dp_display_irq_handler(int irq, void *dev_id) return ret; } -int dp_display_request_irq(struct msm_dp *dp_display) +static int dp_display_request_irq(struct dp_display_private *dp) { int rc = 0; - struct dp_display_private *dp; + struct platform_device *pdev = dp->dp_display.pdev; - if (!dp_display) { - DRM_ERROR("invalid input\n"); - return -EINVAL; - } - - dp = container_of(dp_display, struct dp_display_private, dp_display); - - dp->irq = irq_of_parse_and_map(dp->dp_display.pdev->dev.of_node, 0); - if (!dp->irq) { + dp->irq = platform_get_irq(pdev, 0); + if (dp->irq < 0) { DRM_ERROR("failed to get irq\n"); - return -EINVAL; + return dp->irq; } - rc = devm_request_irq(dp_display->drm_dev->dev, dp->irq, - dp_display_irq_handler, - IRQF_TRIGGER_HIGH, "dp_display_isr", dp); + rc = devm_request_irq(&pdev->dev, dp->irq, dp_display_irq_handler, + IRQF_TRIGGER_HIGH|IRQF_NO_AUTOEN, + "dp_display_isr", dp); + if (rc < 0) { DRM_ERROR("failed to request IRQ%u: %d\n", dp->irq, rc); @@ -1244,6 +1228,29 @@ static const struct msm_dp_desc *dp_display_get_desc(struct platform_device *pde return NULL; } +static int dp_display_get_next_bridge(struct msm_dp *dp); + +static int dp_display_probe_tail(struct device *dev) +{ + struct msm_dp *dp = dev_get_drvdata(dev); + int ret; + + ret = dp_display_get_next_bridge(dp); + if (ret) + return ret; + + ret = component_add(dev, &dp_display_comp_ops); + if (ret) + DRM_ERROR("component add failed, rc=%d\n", ret); + + return ret; +} + +static int dp_auxbus_done_probe(struct drm_dp_aux *aux) +{ + return dp_display_probe_tail(aux->dev); +} + static int dp_display_probe(struct platform_device *pdev) { int rc = 0; @@ -1277,6 +1284,18 @@ static int dp_display_probe(struct platform_device *pdev) return -EPROBE_DEFER; } + rc = dp->parser->parse(dp->parser); + if (rc) { + DRM_ERROR("device tree parsing failed\n"); + goto err; + } + + rc = dp_power_client_init(dp->power); + if (rc) { + DRM_ERROR("Power client create failed\n"); + goto err; + } + /* setup event q */ mutex_init(&dp->event_mutex); init_waitqueue_head(&dp->event_q); @@ -1289,13 +1308,31 @@ static int dp_display_probe(struct platform_device *pdev) platform_set_drvdata(pdev, &dp->dp_display); - rc = component_add(&pdev->dev, &dp_display_comp_ops); - if (rc) { - DRM_ERROR("component add failed, rc=%d\n", rc); - dp_display_deinit_sub_modules(dp); + rc = devm_pm_runtime_enable(&pdev->dev); + if (rc) + goto err; + + rc = dp_display_request_irq(dp); + if (rc) + goto err; + + if (dp->dp_display.is_edp) { + rc = devm_of_dp_aux_populate_bus(dp->aux, dp_auxbus_done_probe); + if (rc) { + DRM_ERROR("eDP auxbus population failed, rc=%d\n", rc); + goto err; + } + } else { + rc = dp_display_probe_tail(&pdev->dev); + if (rc) + goto err; } return rc; + +err: + dp_display_deinit_sub_modules(dp); + return rc; } static void dp_display_remove(struct platform_device *pdev) @@ -1304,113 +1341,50 @@ static void dp_display_remove(struct platform_device *pdev) component_del(&pdev->dev, &dp_display_comp_ops); dp_display_deinit_sub_modules(dp); - platform_set_drvdata(pdev, NULL); } -static int dp_pm_resume(struct device *dev) +static int dp_pm_runtime_suspend(struct device *dev) { - struct platform_device *pdev = to_platform_device(dev); - struct msm_dp *dp_display = platform_get_drvdata(pdev); - struct dp_display_private *dp; - int sink_count = 0; - - dp = container_of(dp_display, struct dp_display_private, dp_display); - - mutex_lock(&dp->event_mutex); - - drm_dbg_dp(dp->drm_dev, - "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n", - dp->dp_display.connector_type, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); - - /* start from disconnected state */ - dp->hpd_state = ST_DISCONNECTED; - - /* turn on dp ctrl/phy */ - dp_display_host_init(dp); - - if (dp_display->is_edp) - dp_catalog_ctrl_hpd_enable(dp->catalog); + struct dp_display_private *dp = dev_get_dp_display_private(dev); - if (dp_catalog_link_is_connected(dp->catalog)) { - /* - * set sink to normal operation mode -- D0 - * before dpcd read - */ - dp_display_host_phy_init(dp); - dp_link_psm_config(dp->link, &dp->panel->link_info, false); - sink_count = drm_dp_read_sink_count(dp->aux); - if (sink_count < 0) - sink_count = 0; + disable_irq(dp->irq); + if (dp->dp_display.is_edp) { dp_display_host_phy_exit(dp); + dp_catalog_ctrl_hpd_disable(dp->catalog); } - - dp->link->sink_count = sink_count; - /* - * can not declared display is connected unless - * HDMI cable is plugged in and sink_count of - * dongle become 1 - * also only signal audio when disconnected - */ - if (dp->link->sink_count) { - dp->dp_display.is_connected = true; - } else { - dp->dp_display.is_connected = false; - dp_display_handle_plugged_change(dp_display, false); - } - - drm_dbg_dp(dp->drm_dev, - "After, type=%d sink=%d conn=%d core_init=%d phy_init=%d power=%d\n", - dp->dp_display.connector_type, dp->link->sink_count, - dp->dp_display.is_connected, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); - - mutex_unlock(&dp->event_mutex); + dp_display_host_deinit(dp); return 0; } -static int dp_pm_suspend(struct device *dev) +static int dp_pm_runtime_resume(struct device *dev) { - struct platform_device *pdev = to_platform_device(dev); - struct msm_dp *dp_display = platform_get_drvdata(pdev); - struct dp_display_private *dp; - - dp = container_of(dp_display, struct dp_display_private, dp_display); - - mutex_lock(&dp->event_mutex); - - drm_dbg_dp(dp->drm_dev, - "Before, type=%d core_inited=%d phy_inited=%d power_on=%d\n", - dp->dp_display.connector_type, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); - - /* mainlink enabled */ - if (dp_power_clk_status(dp->power, DP_CTRL_PM)) - dp_ctrl_off_link_stream(dp->ctrl); - - dp_display_host_phy_exit(dp); - - /* host_init will be called at pm_resume */ - dp_display_host_deinit(dp); - - dp->hpd_state = ST_SUSPENDED; - - drm_dbg_dp(dp->drm_dev, - "After, type=%d core_inited=%d phy_inited=%d power_on=%d\n", - dp->dp_display.connector_type, dp->core_initialized, - dp->phy_initialized, dp_display->power_on); + struct dp_display_private *dp = dev_get_dp_display_private(dev); - mutex_unlock(&dp->event_mutex); + /* + * for eDP, host cotroller, HPD block and PHY are enabled here + * but with HPD irq disabled + * + * for DP, only host controller is enabled here. + * HPD block is enabled at dp_bridge_hpd_enable() + * PHY will be enabled at plugin handler later + */ + dp_display_host_init(dp); + if (dp->dp_display.is_edp) { + dp_catalog_ctrl_hpd_enable(dp->catalog); + dp_display_host_phy_init(dp); + } + enable_irq(dp->irq); return 0; } static const struct dev_pm_ops dp_pm_ops = { - .suspend = dp_pm_suspend, - .resume = dp_pm_resume, + SET_RUNTIME_PM_OPS(dp_pm_runtime_suspend, dp_pm_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) }; static struct platform_driver dp_display_driver = { @@ -1440,19 +1414,6 @@ void __exit msm_dp_unregister(void) platform_driver_unregister(&dp_display_driver); } -void msm_dp_irq_postinstall(struct msm_dp *dp_display) -{ - struct dp_display_private *dp; - - if (!dp_display) - return; - - dp = container_of(dp_display, struct dp_display_private, dp_display); - - if (!dp_display->is_edp) - dp_add_event(dp, EV_HPD_INIT_SETUP, 0, 0); -} - bool msm_dp_wide_bus_available(const struct msm_dp *dp_display) { struct dp_display_private *dp; @@ -1462,7 +1423,7 @@ bool msm_dp_wide_bus_available(const struct msm_dp *dp_display) return dp->wide_bus_en; } -void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor) +void dp_display_debugfs_init(struct msm_dp *dp_display, struct dentry *root, bool is_edp) { struct dp_display_private *dp; struct device *dev; @@ -1473,7 +1434,7 @@ void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor) dp->debug = dp_debug_get(dev, dp->panel, dp->link, dp->dp_display.connector, - minor); + root, is_edp); if (IS_ERR(dp->debug)) { rc = PTR_ERR(dp->debug); DRM_ERROR("failed to initialize debug, rc = %d\n", rc); @@ -1485,33 +1446,8 @@ static int dp_display_get_next_bridge(struct msm_dp *dp) { int rc; struct dp_display_private *dp_priv; - struct device_node *aux_bus; - struct device *dev; dp_priv = container_of(dp, struct dp_display_private, dp_display); - dev = &dp_priv->dp_display.pdev->dev; - aux_bus = of_get_child_by_name(dev->of_node, "aux-bus"); - - if (aux_bus && dp->is_edp) { - dp_display_host_init(dp_priv); - dp_catalog_ctrl_hpd_enable(dp_priv->catalog); - dp_display_host_phy_init(dp_priv); - - /* - * The code below assumes that the panel will finish probing - * by the time devm_of_dp_aux_populate_ep_devices() returns. - * This isn't a great assumption since it will fail if the - * panel driver is probed asynchronously but is the best we - * can do without a bigger driver reorganization. - */ - rc = of_dp_aux_populate_bus(dp_priv->aux, NULL); - of_node_put(aux_bus); - if (rc) - goto error; - } else if (dp->is_edp) { - DRM_ERROR("eDP aux_bus not found\n"); - return -ENODEV; - } /* * External bridges are mandatory for eDP interfaces: one has to @@ -1520,21 +1456,13 @@ static int dp_display_get_next_bridge(struct msm_dp *dp) * For DisplayPort interfaces external bridges are optional, so * silently ignore an error if one is not present (-ENODEV). */ - rc = devm_dp_parser_find_next_bridge(dp->drm_dev->dev, dp_priv->parser); + rc = devm_dp_parser_find_next_bridge(&dp->pdev->dev, dp_priv->parser); if (!dp->is_edp && rc == -ENODEV) return 0; - if (!rc) { + if (!rc) dp->next_bridge = dp_priv->parser->next_bridge; - return 0; - } -error: - if (dp->is_edp) { - of_dp_aux_depopulate_bus(dp_priv->aux); - dp_display_host_phy_exit(dp_priv); - dp_display_host_deinit(dp_priv); - } return rc; } @@ -1548,16 +1476,6 @@ int msm_dp_modeset_init(struct msm_dp *dp_display, struct drm_device *dev, dp_priv = container_of(dp_display, struct dp_display_private, dp_display); - ret = dp_display_request_irq(dp_display); - if (ret) { - DRM_ERROR("request_irq failed, ret=%d\n", ret); - return ret; - } - - ret = dp_display_get_next_bridge(dp_display); - if (ret) - return ret; - ret = dp_bridge_init(dp_display, dev, encoder); if (ret) { DRM_DEV_ERROR(dev->dev, @@ -1599,6 +1517,11 @@ void dp_bridge_atomic_enable(struct drm_bridge *drm_bridge, dp_hpd_plug_handle(dp_display, 0); mutex_lock(&dp_display->event_mutex); + if (pm_runtime_resume_and_get(&dp->pdev->dev)) { + DRM_ERROR("failed to pm_runtime_resume\n"); + mutex_unlock(&dp_display->event_mutex); + return; + } state = dp_display->hpd_state; if (state != ST_DISPLAY_OFF && state != ST_MAINLINK_READY) { @@ -1663,10 +1586,9 @@ void dp_bridge_atomic_post_disable(struct drm_bridge *drm_bridge, mutex_lock(&dp_display->event_mutex); state = dp_display->hpd_state; - if (state != ST_DISCONNECT_PENDING && state != ST_CONNECTED) { - mutex_unlock(&dp_display->event_mutex); - return; - } + if (state != ST_DISCONNECT_PENDING && state != ST_CONNECTED) + drm_dbg_dp(dp->drm_dev, "type=%d wrong hpd_state=%d\n", + dp->connector_type, state); dp_display_disable(dp_display); @@ -1679,6 +1601,8 @@ void dp_bridge_atomic_post_disable(struct drm_bridge *drm_bridge, } drm_dbg_dp(dp->drm_dev, "type=%d Done\n", dp->connector_type); + + pm_runtime_put_sync(&dp->pdev->dev); mutex_unlock(&dp_display->event_mutex); } @@ -1717,7 +1641,21 @@ void dp_bridge_hpd_enable(struct drm_bridge *bridge) struct msm_dp *dp_display = dp_bridge->dp_display; struct dp_display_private *dp = container_of(dp_display, struct dp_display_private, dp_display); + /* + * this is for external DP with hpd irq enabled case, + * step-1: dp_pm_runtime_resume() enable dp host only + * step-2: enable hdp block and have hpd irq enabled here + * step-3: waiting for plugin irq while phy is not initialized + * step-4: DP PHY is initialized at plugin handler before link training + * + */ mutex_lock(&dp->event_mutex); + if (pm_runtime_resume_and_get(&dp_display->pdev->dev)) { + DRM_ERROR("failed to resume power\n"); + mutex_unlock(&dp->event_mutex); + return; + } + dp_catalog_ctrl_hpd_enable(dp->catalog); /* enable HDP interrupts */ @@ -1739,6 +1677,8 @@ void dp_bridge_hpd_disable(struct drm_bridge *bridge) dp_catalog_ctrl_hpd_disable(dp->catalog); dp_display->internal_hpd = false; + + pm_runtime_put_sync(&dp_display->pdev->dev); mutex_unlock(&dp->event_mutex); } @@ -1753,13 +1693,8 @@ void dp_bridge_hpd_notify(struct drm_bridge *bridge, if (dp_display->internal_hpd) return; - if (!dp->core_initialized) { - drm_dbg_dp(dp->drm_dev, "not initialized\n"); - return; - } - - if (!dp_display->is_connected && status == connector_status_connected) + if (!dp_display->link_ready && status == connector_status_connected) dp_add_event(dp, EV_HPD_PLUG_INT, 0, 0); - else if (dp_display->is_connected && status == connector_status_disconnected) + else if (dp_display->link_ready && status == connector_status_disconnected) dp_add_event(dp, EV_HPD_UNPLUG_INT, 0, 0); } |