| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Chris Zhong | 5323 | 93.83% | 5 | 17.86% |
| Brian Norris | 123 | 2.17% | 1 | 3.57% |
| Guenter Roeck | 62 | 1.09% | 1 | 3.57% |
| Sascha Hauer | 58 | 1.02% | 1 | 3.57% |
| Jeffy Chen | 34 | 0.60% | 3 | 10.71% |
| Sam Ravnborg | 12 | 0.21% | 1 | 3.57% |
| Kuninori Morimoto | 11 | 0.19% | 1 | 3.57% |
| Christophe Jaillet | 10 | 0.18% | 1 | 3.57% |
| Thierry Reding | 8 | 0.14% | 1 | 3.57% |
| Yang Yingliang | 7 | 0.12% | 1 | 3.57% |
| Thomas Zimmermann | 6 | 0.11% | 2 | 7.14% |
| Peter Robinson | 5 | 0.09% | 1 | 3.57% |
| caihuoqing | 3 | 0.05% | 1 | 3.57% |
| Nathan Huckleberry | 2 | 0.04% | 1 | 3.57% |
| Thomas Gleixner | 2 | 0.04% | 1 | 3.57% |
| Daniel Vetter | 2 | 0.04% | 2 | 7.14% |
| Enric Balletbò i Serra | 2 | 0.04% | 1 | 3.57% |
| Tom Rix | 1 | 0.02% | 1 | 3.57% |
| Arnd Bergmann | 1 | 0.02% | 1 | 3.57% |
| Gustavo A. R. Silva | 1 | 0.02% | 1 | 3.57% |
| Total | 5673 | 28 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd * Author: Chris Zhong <zyw@rock-chips.com> */ #include <linux/clk.h> #include <linux/component.h> #include <linux/extcon.h> #include <linux/firmware.h> #include <linux/mfd/syscon.h> #include <linux/phy/phy.h> #include <linux/regmap.h> #include <linux/reset.h> #include <sound/hdmi-codec.h> #include <drm/display/drm_dp_helper.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_edid.h> #include <drm/drm_of.h> #include <drm/drm_probe_helper.h> #include <drm/drm_simple_kms_helper.h> #include "cdn-dp-core.h" #include "cdn-dp-reg.h" #include "rockchip_drm_vop.h" static inline struct cdn_dp_device *connector_to_dp(struct drm_connector *connector) { return container_of(connector, struct cdn_dp_device, connector); } static inline struct cdn_dp_device *encoder_to_dp(struct drm_encoder *encoder) { struct rockchip_encoder *rkencoder = to_rockchip_encoder(encoder); return container_of(rkencoder, struct cdn_dp_device, encoder); } #define GRF_SOC_CON9 0x6224 #define DP_SEL_VOP_LIT BIT(12) #define GRF_SOC_CON26 0x6268 #define DPTX_HPD_SEL (3 << 12) #define DPTX_HPD_DEL (2 << 12) #define DPTX_HPD_SEL_MASK (3 << 28) #define CDN_FW_TIMEOUT_MS (64 * 1000) #define CDN_DPCD_TIMEOUT_MS 5000 #define CDN_DP_FIRMWARE "rockchip/dptx.bin" MODULE_FIRMWARE(CDN_DP_FIRMWARE); struct cdn_dp_data { u8 max_phy; }; static struct cdn_dp_data rk3399_cdn_dp = { .max_phy = 2, }; static const struct of_device_id cdn_dp_dt_ids[] = { { .compatible = "rockchip,rk3399-cdn-dp", .data = (void *)&rk3399_cdn_dp }, {} }; MODULE_DEVICE_TABLE(of, cdn_dp_dt_ids); static int cdn_dp_grf_write(struct cdn_dp_device *dp, unsigned int reg, unsigned int val) { int ret; ret = clk_prepare_enable(dp->grf_clk); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to prepare_enable grf clock\n"); return ret; } ret = regmap_write(dp->grf, reg, val); if (ret) { DRM_DEV_ERROR(dp->dev, "Could not write to GRF: %d\n", ret); clk_disable_unprepare(dp->grf_clk); return ret; } clk_disable_unprepare(dp->grf_clk); return 0; } static int cdn_dp_clk_enable(struct cdn_dp_device *dp) { int ret; unsigned long rate; ret = clk_prepare_enable(dp->pclk); if (ret < 0) { DRM_DEV_ERROR(dp->dev, "cannot enable dp pclk %d\n", ret); goto err_pclk; } ret = clk_prepare_enable(dp->core_clk); if (ret < 0) { DRM_DEV_ERROR(dp->dev, "cannot enable core_clk %d\n", ret); goto err_core_clk; } ret = pm_runtime_get_sync(dp->dev); if (ret < 0) { DRM_DEV_ERROR(dp->dev, "cannot get pm runtime %d\n", ret); goto err_pm_runtime_get; } reset_control_assert(dp->core_rst); reset_control_assert(dp->dptx_rst); reset_control_assert(dp->apb_rst); reset_control_deassert(dp->core_rst); reset_control_deassert(dp->dptx_rst); reset_control_deassert(dp->apb_rst); rate = clk_get_rate(dp->core_clk); if (!rate) { DRM_DEV_ERROR(dp->dev, "get clk rate failed\n"); ret = -EINVAL; goto err_set_rate; } cdn_dp_set_fw_clk(dp, rate); cdn_dp_clock_reset(dp); return 0; err_set_rate: pm_runtime_put(dp->dev); err_pm_runtime_get: clk_disable_unprepare(dp->core_clk); err_core_clk: clk_disable_unprepare(dp->pclk); err_pclk: return ret; } static void cdn_dp_clk_disable(struct cdn_dp_device *dp) { pm_runtime_put_sync(dp->dev); clk_disable_unprepare(dp->pclk); clk_disable_unprepare(dp->core_clk); } static int cdn_dp_get_port_lanes(struct cdn_dp_port *port) { struct extcon_dev *edev = port->extcon; union extcon_property_value property; int dptx; u8 lanes; dptx = extcon_get_state(edev, EXTCON_DISP_DP); if (dptx > 0) { extcon_get_property(edev, EXTCON_DISP_DP, EXTCON_PROP_USB_SS, &property); if (property.intval) lanes = 2; else lanes = 4; } else { lanes = 0; } return lanes; } static int cdn_dp_get_sink_count(struct cdn_dp_device *dp, u8 *sink_count) { int ret; u8 value; *sink_count = 0; ret = cdn_dp_dpcd_read(dp, DP_SINK_COUNT, &value, 1); if (ret) return ret; *sink_count = DP_GET_SINK_COUNT(value); return 0; } static struct cdn_dp_port *cdn_dp_connected_port(struct cdn_dp_device *dp) { struct cdn_dp_port *port; int i, lanes; for (i = 0; i < dp->ports; i++) { port = dp->port[i]; lanes = cdn_dp_get_port_lanes(port); if (lanes) return port; } return NULL; } static bool cdn_dp_check_sink_connection(struct cdn_dp_device *dp) { unsigned long timeout = jiffies + msecs_to_jiffies(CDN_DPCD_TIMEOUT_MS); struct cdn_dp_port *port; u8 sink_count = 0; if (dp->active_port < 0 || dp->active_port >= dp->ports) { DRM_DEV_ERROR(dp->dev, "active_port is wrong!\n"); return false; } port = dp->port[dp->active_port]; /* * Attempt to read sink count, retry in case the sink may not be ready. * * Sinks are *supposed* to come up within 1ms from an off state, but * some docks need more time to power up. */ while (time_before(jiffies, timeout)) { if (!extcon_get_state(port->extcon, EXTCON_DISP_DP)) return false; if (!cdn_dp_get_sink_count(dp, &sink_count)) return sink_count ? true : false; usleep_range(5000, 10000); } DRM_DEV_ERROR(dp->dev, "Get sink capability timed out\n"); return false; } static enum drm_connector_status cdn_dp_connector_detect(struct drm_connector *connector, bool force) { struct cdn_dp_device *dp = connector_to_dp(connector); enum drm_connector_status status = connector_status_disconnected; mutex_lock(&dp->lock); if (dp->connected) status = connector_status_connected; mutex_unlock(&dp->lock); return status; } static void cdn_dp_connector_destroy(struct drm_connector *connector) { drm_connector_unregister(connector); drm_connector_cleanup(connector); } static const struct drm_connector_funcs cdn_dp_atomic_connector_funcs = { .detect = cdn_dp_connector_detect, .destroy = cdn_dp_connector_destroy, .fill_modes = drm_helper_probe_single_connector_modes, .reset = drm_atomic_helper_connector_reset, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; static int cdn_dp_connector_get_modes(struct drm_connector *connector) { struct cdn_dp_device *dp = connector_to_dp(connector); struct edid *edid; int ret = 0; mutex_lock(&dp->lock); edid = dp->edid; if (edid) { DRM_DEV_DEBUG_KMS(dp->dev, "got edid: width[%d] x height[%d]\n", edid->width_cm, edid->height_cm); dp->sink_has_audio = drm_detect_monitor_audio(edid); ret = drm_add_edid_modes(connector, edid); if (ret) drm_connector_update_edid_property(connector, edid); } mutex_unlock(&dp->lock); return ret; } static enum drm_mode_status cdn_dp_connector_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { struct cdn_dp_device *dp = connector_to_dp(connector); struct drm_display_info *display_info = &dp->connector.display_info; u32 requested, actual, rate, sink_max, source_max = 0; u8 lanes, bpc; /* If DP is disconnected, every mode is invalid */ if (!dp->connected) return MODE_BAD; switch (display_info->bpc) { case 10: bpc = 10; break; case 6: bpc = 6; break; default: bpc = 8; break; } requested = mode->clock * bpc * 3 / 1000; source_max = dp->lanes; sink_max = drm_dp_max_lane_count(dp->dpcd); lanes = min(source_max, sink_max); source_max = drm_dp_bw_code_to_link_rate(CDN_DP_MAX_LINK_RATE); sink_max = drm_dp_max_link_rate(dp->dpcd); rate = min(source_max, sink_max); actual = rate * lanes / 100; /* efficiency is about 0.8 */ actual = actual * 8 / 10; if (requested > actual) { DRM_DEV_DEBUG_KMS(dp->dev, "requested=%d, actual=%d, clock=%d\n", requested, actual, mode->clock); return MODE_CLOCK_HIGH; } return MODE_OK; } static struct drm_connector_helper_funcs cdn_dp_connector_helper_funcs = { .get_modes = cdn_dp_connector_get_modes, .mode_valid = cdn_dp_connector_mode_valid, }; static int cdn_dp_firmware_init(struct cdn_dp_device *dp) { int ret; const u32 *iram_data, *dram_data; const struct firmware *fw = dp->fw; const struct cdn_firmware_header *hdr; hdr = (struct cdn_firmware_header *)fw->data; if (fw->size != le32_to_cpu(hdr->size_bytes)) { DRM_DEV_ERROR(dp->dev, "firmware is invalid\n"); return -EINVAL; } iram_data = (const u32 *)(fw->data + hdr->header_size); dram_data = (const u32 *)(fw->data + hdr->header_size + hdr->iram_size); ret = cdn_dp_load_firmware(dp, iram_data, hdr->iram_size, dram_data, hdr->dram_size); if (ret) return ret; ret = cdn_dp_set_firmware_active(dp, true); if (ret) { DRM_DEV_ERROR(dp->dev, "active ucpu failed: %d\n", ret); return ret; } return cdn_dp_event_config(dp); } static int cdn_dp_get_sink_capability(struct cdn_dp_device *dp) { int ret; if (!cdn_dp_check_sink_connection(dp)) return -ENODEV; ret = cdn_dp_dpcd_read(dp, DP_DPCD_REV, dp->dpcd, DP_RECEIVER_CAP_SIZE); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to get caps %d\n", ret); return ret; } kfree(dp->edid); dp->edid = drm_do_get_edid(&dp->connector, cdn_dp_get_edid_block, dp); return 0; } static int cdn_dp_enable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) { union extcon_property_value property; int ret; if (!port->phy_enabled) { ret = phy_power_on(port->phy); if (ret) { DRM_DEV_ERROR(dp->dev, "phy power on failed: %d\n", ret); goto err_phy; } port->phy_enabled = true; } ret = cdn_dp_grf_write(dp, GRF_SOC_CON26, DPTX_HPD_SEL_MASK | DPTX_HPD_SEL); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to write HPD_SEL %d\n", ret); goto err_power_on; } ret = cdn_dp_get_hpd_status(dp); if (ret <= 0) { if (!ret) DRM_DEV_ERROR(dp->dev, "hpd does not exist\n"); goto err_power_on; } ret = extcon_get_property(port->extcon, EXTCON_DISP_DP, EXTCON_PROP_USB_TYPEC_POLARITY, &property); if (ret) { DRM_DEV_ERROR(dp->dev, "get property failed\n"); goto err_power_on; } port->lanes = cdn_dp_get_port_lanes(port); ret = cdn_dp_set_host_cap(dp, port->lanes, property.intval); if (ret) { DRM_DEV_ERROR(dp->dev, "set host capabilities failed: %d\n", ret); goto err_power_on; } dp->active_port = port->id; return 0; err_power_on: if (phy_power_off(port->phy)) DRM_DEV_ERROR(dp->dev, "phy power off failed: %d", ret); else port->phy_enabled = false; err_phy: cdn_dp_grf_write(dp, GRF_SOC_CON26, DPTX_HPD_SEL_MASK | DPTX_HPD_DEL); return ret; } static int cdn_dp_disable_phy(struct cdn_dp_device *dp, struct cdn_dp_port *port) { int ret; if (port->phy_enabled) { ret = phy_power_off(port->phy); if (ret) { DRM_DEV_ERROR(dp->dev, "phy power off failed: %d", ret); return ret; } } port->phy_enabled = false; port->lanes = 0; dp->active_port = -1; return 0; } static int cdn_dp_disable(struct cdn_dp_device *dp) { int ret, i; if (!dp->active) return 0; for (i = 0; i < dp->ports; i++) cdn_dp_disable_phy(dp, dp->port[i]); ret = cdn_dp_grf_write(dp, GRF_SOC_CON26, DPTX_HPD_SEL_MASK | DPTX_HPD_DEL); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to clear hpd sel %d\n", ret); return ret; } cdn_dp_set_firmware_active(dp, false); cdn_dp_clk_disable(dp); dp->active = false; dp->max_lanes = 0; dp->max_rate = 0; if (!dp->connected) { kfree(dp->edid); dp->edid = NULL; } return 0; } static int cdn_dp_enable(struct cdn_dp_device *dp) { int ret, i, lanes; struct cdn_dp_port *port; port = cdn_dp_connected_port(dp); if (!port) { DRM_DEV_ERROR(dp->dev, "Can't enable without connection\n"); return -ENODEV; } if (dp->active) return 0; ret = cdn_dp_clk_enable(dp); if (ret) return ret; ret = cdn_dp_firmware_init(dp); if (ret) { DRM_DEV_ERROR(dp->dev, "firmware init failed: %d", ret); goto err_clk_disable; } /* only enable the port that connected with downstream device */ for (i = port->id; i < dp->ports; i++) { port = dp->port[i]; lanes = cdn_dp_get_port_lanes(port); if (lanes) { ret = cdn_dp_enable_phy(dp, port); if (ret) continue; ret = cdn_dp_get_sink_capability(dp); if (ret) { cdn_dp_disable_phy(dp, port); } else { dp->active = true; dp->lanes = port->lanes; return 0; } } } err_clk_disable: cdn_dp_clk_disable(dp); return ret; } static void cdn_dp_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, struct drm_display_mode *adjusted) { struct cdn_dp_device *dp = encoder_to_dp(encoder); struct drm_display_info *display_info = &dp->connector.display_info; struct video_info *video = &dp->video_info; switch (display_info->bpc) { case 10: video->color_depth = 10; break; case 6: video->color_depth = 6; break; default: video->color_depth = 8; break; } video->color_fmt = PXL_RGB; video->v_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NVSYNC); video->h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC); memcpy(&dp->mode, adjusted, sizeof(*mode)); } static bool cdn_dp_check_link_status(struct cdn_dp_device *dp) { u8 link_status[DP_LINK_STATUS_SIZE]; struct cdn_dp_port *port = cdn_dp_connected_port(dp); u8 sink_lanes = drm_dp_max_lane_count(dp->dpcd); if (!port || !dp->max_rate || !dp->max_lanes) return false; if (cdn_dp_dpcd_read(dp, DP_LANE0_1_STATUS, link_status, DP_LINK_STATUS_SIZE)) { DRM_ERROR("Failed to get link status\n"); return false; } /* if link training is requested we should perform it always */ return drm_dp_channel_eq_ok(link_status, min(port->lanes, sink_lanes)); } static void cdn_dp_audio_handle_plugged_change(struct cdn_dp_device *dp, bool plugged) { if (dp->codec_dev) dp->plugged_cb(dp->codec_dev, plugged); } static void cdn_dp_encoder_enable(struct drm_encoder *encoder) { struct cdn_dp_device *dp = encoder_to_dp(encoder); int ret, val; ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder); if (ret < 0) { DRM_DEV_ERROR(dp->dev, "Could not get vop id, %d", ret); return; } DRM_DEV_DEBUG_KMS(dp->dev, "vop %s output to cdn-dp\n", (ret) ? "LIT" : "BIG"); if (ret) val = DP_SEL_VOP_LIT | (DP_SEL_VOP_LIT << 16); else val = DP_SEL_VOP_LIT << 16; ret = cdn_dp_grf_write(dp, GRF_SOC_CON9, val); if (ret) return; mutex_lock(&dp->lock); ret = cdn_dp_enable(dp); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to enable encoder %d\n", ret); goto out; } if (!cdn_dp_check_link_status(dp)) { ret = cdn_dp_train_link(dp); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed link train %d\n", ret); goto out; } } ret = cdn_dp_set_video_status(dp, CONTROL_VIDEO_IDLE); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to idle video %d\n", ret); goto out; } ret = cdn_dp_config_video(dp); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to config video %d\n", ret); goto out; } ret = cdn_dp_set_video_status(dp, CONTROL_VIDEO_VALID); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to valid video %d\n", ret); goto out; } cdn_dp_audio_handle_plugged_change(dp, true); out: mutex_unlock(&dp->lock); } static void cdn_dp_encoder_disable(struct drm_encoder *encoder) { struct cdn_dp_device *dp = encoder_to_dp(encoder); int ret; mutex_lock(&dp->lock); cdn_dp_audio_handle_plugged_change(dp, false); if (dp->active) { ret = cdn_dp_disable(dp); if (ret) { DRM_DEV_ERROR(dp->dev, "Failed to disable encoder %d\n", ret); } } mutex_unlock(&dp->lock); /* * In the following 2 cases, we need to run the event_work to re-enable * the DP: * 1. If there is not just one port device is connected, and remove one * device from a port, the DP will be disabled here, at this case, * run the event_work to re-open DP for the other port. * 2. If re-training or re-config failed, the DP will be disabled here. * run the event_work to re-connect it. */ if (!dp->connected && cdn_dp_connected_port(dp)) schedule_work(&dp->event_work); } static int cdn_dp_encoder_atomic_check(struct drm_encoder *encoder, struct drm_crtc_state *crtc_state, struct drm_connector_state *conn_state) { struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state); s->output_mode = ROCKCHIP_OUT_MODE_AAAA; s->output_type = DRM_MODE_CONNECTOR_DisplayPort; return 0; } static const struct drm_encoder_helper_funcs cdn_dp_encoder_helper_funcs = { .mode_set = cdn_dp_encoder_mode_set, .enable = cdn_dp_encoder_enable, .disable = cdn_dp_encoder_disable, .atomic_check = cdn_dp_encoder_atomic_check, }; static int cdn_dp_parse_dt(struct cdn_dp_device *dp) { struct device *dev = dp->dev; struct device_node *np = dev->of_node; struct platform_device *pdev = to_platform_device(dev); dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf"); if (IS_ERR(dp->grf)) { DRM_DEV_ERROR(dev, "cdn-dp needs rockchip,grf property\n"); return PTR_ERR(dp->grf); } dp->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(dp->regs)) { DRM_DEV_ERROR(dev, "ioremap reg failed\n"); return PTR_ERR(dp->regs); } dp->core_clk = devm_clk_get(dev, "core-clk"); if (IS_ERR(dp->core_clk)) { DRM_DEV_ERROR(dev, "cannot get core_clk_dp\n"); return PTR_ERR(dp->core_clk); } dp->pclk = devm_clk_get(dev, "pclk"); if (IS_ERR(dp->pclk)) { DRM_DEV_ERROR(dev, "cannot get pclk\n"); return PTR_ERR(dp->pclk); } dp->spdif_clk = devm_clk_get(dev, "spdif"); if (IS_ERR(dp->spdif_clk)) { DRM_DEV_ERROR(dev, "cannot get spdif_clk\n"); return PTR_ERR(dp->spdif_clk); } dp->grf_clk = devm_clk_get(dev, "grf"); if (IS_ERR(dp->grf_clk)) { DRM_DEV_ERROR(dev, "cannot get grf clk\n"); return PTR_ERR(dp->grf_clk); } dp->spdif_rst = devm_reset_control_get(dev, "spdif"); if (IS_ERR(dp->spdif_rst)) { DRM_DEV_ERROR(dev, "no spdif reset control found\n"); return PTR_ERR(dp->spdif_rst); } dp->dptx_rst = devm_reset_control_get(dev, "dptx"); if (IS_ERR(dp->dptx_rst)) { DRM_DEV_ERROR(dev, "no uphy reset control found\n"); return PTR_ERR(dp->dptx_rst); } dp->core_rst = devm_reset_control_get(dev, "core"); if (IS_ERR(dp->core_rst)) { DRM_DEV_ERROR(dev, "no core reset control found\n"); return PTR_ERR(dp->core_rst); } dp->apb_rst = devm_reset_control_get(dev, "apb"); if (IS_ERR(dp->apb_rst)) { DRM_DEV_ERROR(dev, "no apb reset control found\n"); return PTR_ERR(dp->apb_rst); } return 0; } static int cdn_dp_audio_hw_params(struct device *dev, void *data, struct hdmi_codec_daifmt *daifmt, struct hdmi_codec_params *params) { struct cdn_dp_device *dp = dev_get_drvdata(dev); struct audio_info audio = { .sample_width = params->sample_width, .sample_rate = params->sample_rate, .channels = params->channels, }; int ret; mutex_lock(&dp->lock); if (!dp->active) { ret = -ENODEV; goto out; } switch (daifmt->fmt) { case HDMI_I2S: audio.format = AFMT_I2S; break; case HDMI_SPDIF: audio.format = AFMT_SPDIF; break; default: DRM_DEV_ERROR(dev, "Invalid format %d\n", daifmt->fmt); ret = -EINVAL; goto out; } ret = cdn_dp_audio_config(dp, &audio); if (!ret) dp->audio_info = audio; out: mutex_unlock(&dp->lock); return ret; } static void cdn_dp_audio_shutdown(struct device *dev, void *data) { struct cdn_dp_device *dp = dev_get_drvdata(dev); int ret; mutex_lock(&dp->lock); if (!dp->active) goto out; ret = cdn_dp_audio_stop(dp, &dp->audio_info); if (!ret) dp->audio_info.format = AFMT_UNUSED; out: mutex_unlock(&dp->lock); } static int cdn_dp_audio_mute_stream(struct device *dev, void *data, bool enable, int direction) { struct cdn_dp_device *dp = dev_get_drvdata(dev); int ret; mutex_lock(&dp->lock); if (!dp->active) { ret = -ENODEV; goto out; } ret = cdn_dp_audio_mute(dp, enable); out: mutex_unlock(&dp->lock); return ret; } static int cdn_dp_audio_get_eld(struct device *dev, void *data, u8 *buf, size_t len) { struct cdn_dp_device *dp = dev_get_drvdata(dev); memcpy(buf, dp->connector.eld, min(sizeof(dp->connector.eld), len)); return 0; } static int cdn_dp_audio_hook_plugged_cb(struct device *dev, void *data, hdmi_codec_plugged_cb fn, struct device *codec_dev) { struct cdn_dp_device *dp = dev_get_drvdata(dev); mutex_lock(&dp->lock); dp->plugged_cb = fn; dp->codec_dev = codec_dev; cdn_dp_audio_handle_plugged_change(dp, dp->connected); mutex_unlock(&dp->lock); return 0; } static const struct hdmi_codec_ops audio_codec_ops = { .hw_params = cdn_dp_audio_hw_params, .audio_shutdown = cdn_dp_audio_shutdown, .mute_stream = cdn_dp_audio_mute_stream, .get_eld = cdn_dp_audio_get_eld, .hook_plugged_cb = cdn_dp_audio_hook_plugged_cb, .no_capture_mute = 1, }; static int cdn_dp_audio_codec_init(struct cdn_dp_device *dp, struct device *dev) { struct hdmi_codec_pdata codec_data = { .i2s = 1, .spdif = 1, .ops = &audio_codec_ops, .max_i2s_channels = 8, }; dp->audio_pdev = platform_device_register_data( dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, &codec_data, sizeof(codec_data)); return PTR_ERR_OR_ZERO(dp->audio_pdev); } static int cdn_dp_request_firmware(struct cdn_dp_device *dp) { int ret; unsigned long timeout = jiffies + msecs_to_jiffies(CDN_FW_TIMEOUT_MS); unsigned long sleep = 1000; WARN_ON(!mutex_is_locked(&dp->lock)); if (dp->fw_loaded) return 0; /* Drop the lock before getting the firmware to avoid blocking boot */ mutex_unlock(&dp->lock); while (time_before(jiffies, timeout)) { ret = request_firmware(&dp->fw, CDN_DP_FIRMWARE, dp->dev); if (ret == -ENOENT) { msleep(sleep); sleep *= 2; continue; } else if (ret) { DRM_DEV_ERROR(dp->dev, "failed to request firmware: %d\n", ret); goto out; } dp->fw_loaded = true; ret = 0; goto out; } DRM_DEV_ERROR(dp->dev, "Timed out trying to load firmware\n"); ret = -ETIMEDOUT; out: mutex_lock(&dp->lock); return ret; } static void cdn_dp_pd_event_work(struct work_struct *work) { struct cdn_dp_device *dp = container_of(work, struct cdn_dp_device, event_work); struct drm_connector *connector = &dp->connector; enum drm_connector_status old_status; int ret; mutex_lock(&dp->lock); if (dp->suspended) goto out; ret = cdn_dp_request_firmware(dp); if (ret) goto out; dp->connected = true; /* Not connected, notify userspace to disable the block */ if (!cdn_dp_connected_port(dp)) { DRM_DEV_INFO(dp->dev, "Not connected. Disabling cdn\n"); dp->connected = false; /* Connected but not enabled, enable the block */ } else if (!dp->active) { DRM_DEV_INFO(dp->dev, "Connected, not enabled. Enabling cdn\n"); ret = cdn_dp_enable(dp); if (ret) { DRM_DEV_ERROR(dp->dev, "Enable dp failed %d\n", ret); dp->connected = false; } /* Enabled and connected to a dongle without a sink, notify userspace */ } else if (!cdn_dp_check_sink_connection(dp)) { DRM_DEV_INFO(dp->dev, "Connected without sink. Assert hpd\n"); dp->connected = false; /* Enabled and connected with a sink, re-train if requested */ } else if (!cdn_dp_check_link_status(dp)) { unsigned int rate = dp->max_rate; unsigned int lanes = dp->max_lanes; struct drm_display_mode *mode = &dp->mode; DRM_DEV_INFO(dp->dev, "Connected with sink. Re-train link\n"); ret = cdn_dp_train_link(dp); if (ret) { dp->connected = false; DRM_DEV_ERROR(dp->dev, "Train link failed %d\n", ret); goto out; } /* If training result is changed, update the video config */ if (mode->clock && (rate != dp->max_rate || lanes != dp->max_lanes)) { ret = cdn_dp_config_video(dp); if (ret) { dp->connected = false; DRM_DEV_ERROR(dp->dev, "Failed to config video %d\n", ret); } } } out: mutex_unlock(&dp->lock); old_status = connector->status; connector->status = connector->funcs->detect(connector, false); if (old_status != connector->status) drm_kms_helper_hotplug_event(dp->drm_dev); } static int cdn_dp_pd_event(struct notifier_block *nb, unsigned long event, void *priv) { struct cdn_dp_port *port = container_of(nb, struct cdn_dp_port, event_nb); struct cdn_dp_device *dp = port->dp; /* * It would be nice to be able to just do the work inline right here. * However, we need to make a bunch of calls that might sleep in order * to turn on the block/phy, so use a worker instead. */ schedule_work(&dp->event_work); return NOTIFY_DONE; } static int cdn_dp_bind(struct device *dev, struct device *master, void *data) { struct cdn_dp_device *dp = dev_get_drvdata(dev); struct drm_encoder *encoder; struct drm_connector *connector; struct cdn_dp_port *port; struct drm_device *drm_dev = data; int ret, i; ret = cdn_dp_parse_dt(dp); if (ret < 0) return ret; dp->drm_dev = drm_dev; dp->connected = false; dp->active = false; dp->active_port = -1; dp->fw_loaded = false; INIT_WORK(&dp->event_work, cdn_dp_pd_event_work); encoder = &dp->encoder.encoder; encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev, dev->of_node); DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS); if (ret) { DRM_ERROR("failed to initialize encoder with drm\n"); return ret; } drm_encoder_helper_add(encoder, &cdn_dp_encoder_helper_funcs); connector = &dp->connector; connector->polled = DRM_CONNECTOR_POLL_HPD; connector->dpms = DRM_MODE_DPMS_OFF; ret = drm_connector_init(drm_dev, connector, &cdn_dp_atomic_connector_funcs, DRM_MODE_CONNECTOR_DisplayPort); if (ret) { DRM_ERROR("failed to initialize connector with drm\n"); goto err_free_encoder; } drm_connector_helper_add(connector, &cdn_dp_connector_helper_funcs); ret = drm_connector_attach_encoder(connector, encoder); if (ret) { DRM_ERROR("failed to attach connector and encoder\n"); goto err_free_connector; } for (i = 0; i < dp->ports; i++) { port = dp->port[i]; port->event_nb.notifier_call = cdn_dp_pd_event; ret = devm_extcon_register_notifier(dp->dev, port->extcon, EXTCON_DISP_DP, &port->event_nb); if (ret) { DRM_DEV_ERROR(dev, "register EXTCON_DISP_DP notifier err\n"); goto err_free_connector; } } pm_runtime_enable(dev); schedule_work(&dp->event_work); return 0; err_free_connector: drm_connector_cleanup(connector); err_free_encoder: drm_encoder_cleanup(encoder); return ret; } static void cdn_dp_unbind(struct device *dev, struct device *master, void *data) { struct cdn_dp_device *dp = dev_get_drvdata(dev); struct drm_encoder *encoder = &dp->encoder.encoder; struct drm_connector *connector = &dp->connector; cancel_work_sync(&dp->event_work); cdn_dp_encoder_disable(encoder); encoder->funcs->destroy(encoder); connector->funcs->destroy(connector); pm_runtime_disable(dev); if (dp->fw_loaded) release_firmware(dp->fw); kfree(dp->edid); dp->edid = NULL; } static const struct component_ops cdn_dp_component_ops = { .bind = cdn_dp_bind, .unbind = cdn_dp_unbind, }; static int cdn_dp_suspend(struct device *dev) { struct cdn_dp_device *dp = dev_get_drvdata(dev); int ret = 0; mutex_lock(&dp->lock); if (dp->active) ret = cdn_dp_disable(dp); dp->suspended = true; mutex_unlock(&dp->lock); return ret; } static __maybe_unused int cdn_dp_resume(struct device *dev) { struct cdn_dp_device *dp = dev_get_drvdata(dev); mutex_lock(&dp->lock); dp->suspended = false; if (dp->fw_loaded) schedule_work(&dp->event_work); mutex_unlock(&dp->lock); return 0; } static int cdn_dp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; const struct of_device_id *match; struct cdn_dp_data *dp_data; struct cdn_dp_port *port; struct cdn_dp_device *dp; struct extcon_dev *extcon; struct phy *phy; int i; dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL); if (!dp) return -ENOMEM; dp->dev = dev; match = of_match_node(cdn_dp_dt_ids, pdev->dev.of_node); dp_data = (struct cdn_dp_data *)match->data; for (i = 0; i < dp_data->max_phy; i++) { extcon = extcon_get_edev_by_phandle(dev, i); phy = devm_of_phy_get_by_index(dev, dev->of_node, i); if (PTR_ERR(extcon) == -EPROBE_DEFER || PTR_ERR(phy) == -EPROBE_DEFER) return -EPROBE_DEFER; if (IS_ERR(extcon) || IS_ERR(phy)) continue; port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); if (!port) return -ENOMEM; port->extcon = extcon; port->phy = phy; port->dp = dp; port->id = i; dp->port[dp->ports++] = port; } if (!dp->ports) { DRM_DEV_ERROR(dev, "missing extcon or phy\n"); return -EINVAL; } mutex_init(&dp->lock); dev_set_drvdata(dev, dp); cdn_dp_audio_codec_init(dp, dev); return component_add(dev, &cdn_dp_component_ops); } static int cdn_dp_remove(struct platform_device *pdev) { struct cdn_dp_device *dp = platform_get_drvdata(pdev); platform_device_unregister(dp->audio_pdev); cdn_dp_suspend(dp->dev); component_del(&pdev->dev, &cdn_dp_component_ops); return 0; } static void cdn_dp_shutdown(struct platform_device *pdev) { struct cdn_dp_device *dp = platform_get_drvdata(pdev); cdn_dp_suspend(dp->dev); } static const struct dev_pm_ops cdn_dp_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(cdn_dp_suspend, cdn_dp_resume) }; struct platform_driver cdn_dp_driver = { .probe = cdn_dp_probe, .remove = cdn_dp_remove, .shutdown = cdn_dp_shutdown, .driver = { .name = "cdn-dp", .owner = THIS_MODULE, .of_match_table = of_match_ptr(cdn_dp_dt_ids), .pm = &cdn_dp_pm_ops, }, };
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