10 #include <linux/hdmi.h>
17 #include <sound/hdmi-codec.h>
26 /* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
38  * hdmi_recommended_n() - Return N value recommended by HDMI specification
104 int mtk_hdmi_audio_params(struct mtk_hdmi *hdmi,  in mtk_hdmi_audio_params()  argument
111 	dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__,  in mtk_hdmi_audio_params()
114 	if (!hdmi->bridge.encoder)  in mtk_hdmi_audio_params()
131 		dev_err(hdmi->dev, "channel[%d] not supported!\n", chan);  in mtk_hdmi_audio_params()
145 		dev_err(hdmi->dev, "rate[%d] not supported!\n",  in mtk_hdmi_audio_params()
164 		dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,  in mtk_hdmi_audio_params()
169 	memcpy(&hdmi->aud_param, &aud_params, sizeof(aud_params));  in mtk_hdmi_audio_params()
171 	dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",  in mtk_hdmi_audio_params()
181 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);  in mtk_hdmi_audio_get_eld()  local
183 	if (hdmi->enabled)  in mtk_hdmi_audio_get_eld()
184 		memcpy(buf, hdmi->curr_conn->eld, min(sizeof(hdmi->curr_conn->eld), len));  in mtk_hdmi_audio_get_eld()
192 void mtk_hdmi_audio_set_plugged_cb(struct mtk_hdmi *hdmi, hdmi_codec_plugged_cb fn,  in mtk_hdmi_audio_set_plugged_cb()  argument
195 	mutex_lock(&hdmi->update_plugged_status_lock);  in mtk_hdmi_audio_set_plugged_cb()
196 	hdmi->plugged_cb = fn;  in mtk_hdmi_audio_set_plugged_cb()
197 	hdmi->codec_dev = codec_dev;  in mtk_hdmi_audio_set_plugged_cb()
198 	mutex_unlock(&hdmi->update_plugged_status_lock);  in mtk_hdmi_audio_set_plugged_cb()
202 static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi, struct device_node *np,  in mtk_hdmi_get_all_clk()  argument
208 		hdmi->clk[i] = of_clk_get_by_name(np, clock_names[i]);  in mtk_hdmi_get_all_clk()
210 		if (IS_ERR(hdmi->clk[i]))  in mtk_hdmi_get_all_clk()
211 			return PTR_ERR(hdmi->clk[i]);  in mtk_hdmi_get_all_clk()
229 	struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);  in mtk_hdmi_bridge_mode_set()  local
231 	dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n",  in mtk_hdmi_bridge_mode_set()
233 	dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d",  in mtk_hdmi_bridge_mode_set()
236 	dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n",  in mtk_hdmi_bridge_mode_set()
238 	dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d",  in mtk_hdmi_bridge_mode_set()
241 	dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n",  in mtk_hdmi_bridge_mode_set()
244 	drm_mode_copy(&hdmi->mode, adjusted_mode);  in mtk_hdmi_bridge_mode_set()
255 static int mtk_hdmi_get_cec_dev(struct mtk_hdmi *hdmi, struct device *dev, struct device_node *np)  in mtk_hdmi_get_cec_dev()  argument
261 	/* The CEC module handles HDMI hotplug detection */  in mtk_hdmi_get_cec_dev()
268 		dev_err(hdmi->dev, "Waiting for CEC device %pOF\n", cec_np);  in mtk_hdmi_get_cec_dev()
279 	 * The mediatek,syscon-hdmi property contains a phandle link to the  in mtk_hdmi_get_cec_dev()
283 	hdmi->sys_regmap = syscon_regmap_lookup_by_phandle_args(np, "mediatek,syscon-hdmi",  in mtk_hdmi_get_cec_dev()
284 								1, &hdmi->sys_offset);  in mtk_hdmi_get_cec_dev()
285 	if (IS_ERR(hdmi->sys_regmap))  in mtk_hdmi_get_cec_dev()
286 		return dev_err_probe(dev, PTR_ERR(hdmi->sys_regmap),  in mtk_hdmi_get_cec_dev()
289 	hdmi->cec_dev = &cec_pdev->dev;  in mtk_hdmi_get_cec_dev()
293 static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, struct platform_device *pdev,  in mtk_hdmi_dt_parse_pdata()  argument
301 	ret = mtk_hdmi_get_all_clk(hdmi, np, clk_names, num_clocks);  in mtk_hdmi_dt_parse_pdata()
305 	hdmi->irq = platform_get_irq(pdev, 0);  in mtk_hdmi_dt_parse_pdata()
306 	if (!hdmi->irq)  in mtk_hdmi_dt_parse_pdata()
307 		return hdmi->irq;  in mtk_hdmi_dt_parse_pdata()
309 	hdmi->regs = device_node_to_regmap(dev->of_node);  in mtk_hdmi_dt_parse_pdata()
310 	if (IS_ERR(hdmi->regs))  in mtk_hdmi_dt_parse_pdata()
311 		return PTR_ERR(hdmi->regs);  in mtk_hdmi_dt_parse_pdata()
317 	if (!of_device_is_compatible(remote, "hdmi-connector")) {  in mtk_hdmi_dt_parse_pdata()
318 		hdmi->next_bridge = of_drm_find_bridge(remote);  in mtk_hdmi_dt_parse_pdata()
319 		if (!hdmi->next_bridge) {  in mtk_hdmi_dt_parse_pdata()
331 	hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);  in mtk_hdmi_dt_parse_pdata()
333 	if (!hdmi->ddc_adpt)  in mtk_hdmi_dt_parse_pdata()
336 	ret = devm_add_action_or_reset(dev, mtk_hdmi_put_device, &hdmi->ddc_adpt->dev);  in mtk_hdmi_dt_parse_pdata()
340 	ret = mtk_hdmi_get_cec_dev(hdmi, dev, np);  in mtk_hdmi_dt_parse_pdata()
356 	struct mtk_hdmi *hdmi = dev_get_drvdata(dev);  in mtk_hdmi_register_audio_driver()  local
357 	struct hdmi_audio_param *aud_param = &hdmi->aud_param;  in mtk_hdmi_register_audio_driver()
359 		.ops = hdmi->conf->ver_conf->codec_ops,  in mtk_hdmi_register_audio_driver()
362 		.data = hdmi,  in mtk_hdmi_register_audio_driver()
374 	hdmi->audio_pdev = platform_device_register_data(dev,  in mtk_hdmi_register_audio_driver()
379 	if (IS_ERR(hdmi->audio_pdev))  in mtk_hdmi_register_audio_driver()
380 		return PTR_ERR(hdmi->audio_pdev);  in mtk_hdmi_register_audio_driver()
383 				       hdmi->audio_pdev);  in mtk_hdmi_register_audio_driver()
395 	struct mtk_hdmi *hdmi;  in mtk_hdmi_common_probe()  local
404 	hdmi = devm_drm_bridge_alloc(dev, struct mtk_hdmi, bridge,  in mtk_hdmi_common_probe()
406 	if (IS_ERR(hdmi))  in mtk_hdmi_common_probe()
407 		return hdmi;  in mtk_hdmi_common_probe()
409 	hdmi->dev = dev;  in mtk_hdmi_common_probe()
410 	hdmi->conf = hdmi_conf;  in mtk_hdmi_common_probe()
412 	hdmi->clk = devm_kcalloc(dev, ver_conf->num_clocks, sizeof(*hdmi->clk), GFP_KERNEL);  in mtk_hdmi_common_probe()
413 	if (!hdmi->clk)  in mtk_hdmi_common_probe()
416 	ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev, ver_conf->mtk_hdmi_clock_names,  in mtk_hdmi_common_probe()
421 	hdmi->phy = devm_phy_get(dev, "hdmi");  in mtk_hdmi_common_probe()
422 	if (IS_ERR(hdmi->phy))  in mtk_hdmi_common_probe()
423 		return dev_err_cast_probe(dev, hdmi->phy, "Failed to get HDMI PHY\n");  in mtk_hdmi_common_probe()
425 	mutex_init(&hdmi->update_plugged_status_lock);  in mtk_hdmi_common_probe()
426 	platform_set_drvdata(pdev, hdmi);  in mtk_hdmi_common_probe()
430 		return dev_err_ptr_probe(dev, ret, "Cannot register HDMI Audio driver\n");  in mtk_hdmi_common_probe()
432 	hdmi->bridge.of_node = pdev->dev.of_node;  in mtk_hdmi_common_probe()
433 	hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID  in mtk_hdmi_common_probe()
438 		hdmi->bridge.ops |= DRM_BRIDGE_OP_HDMI;  in mtk_hdmi_common_probe()
440 	hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;  in mtk_hdmi_common_probe()
441 	hdmi->bridge.ddc = hdmi->ddc_adpt;  in mtk_hdmi_common_probe()
442 	hdmi->bridge.vendor = "MediaTek";  in mtk_hdmi_common_probe()
443 	hdmi->bridge.product = "On-Chip HDMI";  in mtk_hdmi_common_probe()
444 	hdmi->bridge.interlace_allowed = ver_conf->interlace_allowed;  in mtk_hdmi_common_probe()
446 	ret = devm_drm_bridge_add(dev, &hdmi->bridge);  in mtk_hdmi_common_probe()
450 	return hdmi;  in mtk_hdmi_common_probe()
455 MODULE_DESCRIPTION("MediaTek HDMI Common Library");