1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Rockchip SoC DP (Display Port) interface driver.
6  * Author: Andy Yan <andy.yan@rock-chips.com>
7  *         Yakir Yang <ykk@rock-chips.com>
8  *         Jeff Chen <jeff.chen@rock-chips.com>
45  * struct rockchip_dp_chip_data - splite the grf setting of kind of chips
87 static int rockchip_dp_pre_init(struct rockchip_dp_device *dp)  in rockchip_dp_pre_init()  argument
89 	reset_control_assert(dp->rst);  in rockchip_dp_pre_init()
91 	reset_control_deassert(dp->rst);  in rockchip_dp_pre_init()
98 	struct rockchip_dp_device *dp = pdata_encoder_to_dp(plat_data);  in rockchip_dp_poweron()  local
101 	ret = clk_prepare_enable(dp->pclk);  in rockchip_dp_poweron()
103 		DRM_DEV_ERROR(dp->dev, "failed to enable pclk %d\n", ret);  in rockchip_dp_poweron()
107 	ret = rockchip_dp_pre_init(dp);  in rockchip_dp_poweron()
109 		DRM_DEV_ERROR(dp->dev, "failed to dp pre init %d\n", ret);  in rockchip_dp_poweron()
110 		clk_disable_unprepare(dp->pclk);  in rockchip_dp_poweron()
119 	struct rockchip_dp_device *dp = pdata_encoder_to_dp(plat_data);  in rockchip_dp_powerdown()  local
121 	clk_disable_unprepare(dp->pclk);  in rockchip_dp_powerdown()
127 				 struct drm_connector *connector)  in rockchip_dp_get_modes()  argument
129 	struct drm_display_info *di = &connector->display_info;  in rockchip_dp_get_modes()
133 	if ((di->color_formats & mask)) {  in rockchip_dp_get_modes()
135 		di->color_formats &= ~mask;  in rockchip_dp_get_modes()
136 		di->color_formats |= DRM_COLOR_FORMAT_RGB444;  in rockchip_dp_get_modes()
137 		di->bpc = 8;  in rockchip_dp_get_modes()
163 	struct drm_connector *connector;  in rockchip_dp_drm_get_new_crtc()  local
166 	connector = drm_atomic_get_new_connector_for_encoder(state, encoder);  in rockchip_dp_drm_get_new_crtc()
167 	if (!connector)  in rockchip_dp_drm_get_new_crtc()
170 	conn_state = drm_atomic_get_new_connector_state(state, connector);  in rockchip_dp_drm_get_new_crtc()
174 	return conn_state->crtc;  in rockchip_dp_drm_get_new_crtc()
180 	struct rockchip_dp_device *dp = encoder_to_dp(encoder);  in rockchip_dp_drm_encoder_enable()  local
192 	if (old_crtc_state && old_crtc_state->self_refresh_active)  in rockchip_dp_drm_encoder_enable()
195 	ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder);  in rockchip_dp_drm_encoder_enable()
200 		val = dp->data->lcdsel_lit;  in rockchip_dp_drm_encoder_enable()
202 		val = dp->data->lcdsel_big;  in rockchip_dp_drm_encoder_enable()
204 	DRM_DEV_DEBUG(dp->dev, "vop %s output to dp\n", (ret) ? "LIT" : "BIG");  in rockchip_dp_drm_encoder_enable()
206 	ret = clk_prepare_enable(dp->grfclk);  in rockchip_dp_drm_encoder_enable()
208 		DRM_DEV_ERROR(dp->dev, "failed to enable grfclk %d\n", ret);  in rockchip_dp_drm_encoder_enable()
212 	ret = regmap_write(dp->grf, dp->data->lcdsel_grf_reg, val);  in rockchip_dp_drm_encoder_enable()
214 		DRM_DEV_ERROR(dp->dev, "Could not write to GRF: %d\n", ret);  in rockchip_dp_drm_encoder_enable()
216 	clk_disable_unprepare(dp->grfclk);  in rockchip_dp_drm_encoder_enable()
222 	struct rockchip_dp_device *dp = encoder_to_dp(encoder);  in rockchip_dp_drm_encoder_disable()  local
233 	/* If we're not entering self-refresh, no need to wait for vact */  in rockchip_dp_drm_encoder_disable()
234 	if (!new_crtc_state || !new_crtc_state->self_refresh_active)  in rockchip_dp_drm_encoder_disable()
239 		DRM_DEV_ERROR(dp->dev, "line flag irq timed out\n");  in rockchip_dp_drm_encoder_disable()
248 	struct drm_display_info *di = &conn_state->connector->display_info;  in rockchip_dp_drm_encoder_atomic_check()
258 	s->output_mode = ROCKCHIP_OUT_MODE_AAAA;  in rockchip_dp_drm_encoder_atomic_check()
259 	s->output_type = DRM_MODE_CONNECTOR_eDP;  in rockchip_dp_drm_encoder_atomic_check()
260 	s->output_bpc = di->bpc;  in rockchip_dp_drm_encoder_atomic_check()
273 static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)  in rockchip_dp_of_probe()  argument
275 	struct device *dev = dp->dev;  in rockchip_dp_of_probe()
276 	struct device_node *np = dev->of_node;  in rockchip_dp_of_probe()
278 	dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");  in rockchip_dp_of_probe()
279 	if (IS_ERR(dp->grf)) {  in rockchip_dp_of_probe()
281 		return PTR_ERR(dp->grf);  in rockchip_dp_of_probe()
284 	dp->grfclk = devm_clk_get(dev, "grf");  in rockchip_dp_of_probe()
285 	if (PTR_ERR(dp->grfclk) == -ENOENT) {  in rockchip_dp_of_probe()
286 		dp->grfclk = NULL;  in rockchip_dp_of_probe()
287 	} else if (PTR_ERR(dp->grfclk) == -EPROBE_DEFER) {  in rockchip_dp_of_probe()
288 		return -EPROBE_DEFER;  in rockchip_dp_of_probe()
289 	} else if (IS_ERR(dp->grfclk)) {  in rockchip_dp_of_probe()
291 		return PTR_ERR(dp->grfclk);  in rockchip_dp_of_probe()
294 	dp->pclk = devm_clk_get(dev, "pclk");  in rockchip_dp_of_probe()
295 	if (IS_ERR(dp->pclk)) {  in rockchip_dp_of_probe()
297 		return PTR_ERR(dp->pclk);  in rockchip_dp_of_probe()
300 	dp->rst = devm_reset_control_get(dev, "dp");  in rockchip_dp_of_probe()
301 	if (IS_ERR(dp->rst)) {  in rockchip_dp_of_probe()
302 		DRM_DEV_ERROR(dev, "failed to get dp reset control\n");  in rockchip_dp_of_probe()
303 		return PTR_ERR(dp->rst);  in rockchip_dp_of_probe()
309 static int rockchip_dp_drm_create_encoder(struct rockchip_dp_device *dp)  in rockchip_dp_drm_create_encoder()  argument
311 	struct drm_encoder *encoder = &dp->encoder.encoder;  in rockchip_dp_drm_create_encoder()
312 	struct drm_device *drm_dev = dp->drm_dev;  in rockchip_dp_drm_create_encoder()
313 	struct device *dev = dp->dev;  in rockchip_dp_drm_create_encoder()
316 	encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,  in rockchip_dp_drm_create_encoder()
317 							     dev->of_node);  in rockchip_dp_drm_create_encoder()
318 	DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);  in rockchip_dp_drm_create_encoder()
335 	struct rockchip_dp_device *dp = dev_get_drvdata(dev);  in rockchip_dp_bind()  local
339 	dp->drm_dev = drm_dev;  in rockchip_dp_bind()
341 	ret = rockchip_dp_drm_create_encoder(dp);  in rockchip_dp_bind()
347 	rockchip_drm_encoder_set_crtc_endpoint_id(&dp->encoder,  in rockchip_dp_bind()
348 						  dev->of_node, 0, 0);  in rockchip_dp_bind()
350 	dp->plat_data.encoder = &dp->encoder.encoder;  in rockchip_dp_bind()
352 	ret = analogix_dp_bind(dp->adp, drm_dev);  in rockchip_dp_bind()
358 	dp->encoder.encoder.funcs->destroy(&dp->encoder.encoder);  in rockchip_dp_bind()
365 	struct rockchip_dp_device *dp = dev_get_drvdata(dev);  in rockchip_dp_unbind()  local
367 	analogix_dp_unbind(dp->adp);  in rockchip_dp_unbind()
368 	dp->encoder.encoder.funcs->destroy(&dp->encoder.encoder);  in rockchip_dp_unbind()
378 	struct device *dev = &pdev->dev;  in rockchip_dp_probe()
381 	struct rockchip_dp_device *dp;  in rockchip_dp_probe()  local
386 		return -ENODEV;  in rockchip_dp_probe()
388 	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL);  in rockchip_dp_probe()
389 	if (ret < 0 && ret != -ENODEV)  in rockchip_dp_probe()
392 	dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);  in rockchip_dp_probe()
393 	if (!dp)  in rockchip_dp_probe()
394 		return -ENOMEM;  in rockchip_dp_probe()
396 	dp->dev = dev;  in rockchip_dp_probe()
397 	dp->adp = ERR_PTR(-ENODEV);  in rockchip_dp_probe()
398 	dp->data = dp_data;  in rockchip_dp_probe()
399 	dp->plat_data.panel = panel;  in rockchip_dp_probe()
400 	dp->plat_data.dev_type = dp->data->chip_type;  in rockchip_dp_probe()
401 	dp->plat_data.power_on = rockchip_dp_poweron;  in rockchip_dp_probe()
402 	dp->plat_data.power_off = rockchip_dp_powerdown;  in rockchip_dp_probe()
403 	dp->plat_data.get_modes = rockchip_dp_get_modes;  in rockchip_dp_probe()
405 	ret = rockchip_dp_of_probe(dp);  in rockchip_dp_probe()
409 	platform_set_drvdata(pdev, dp);  in rockchip_dp_probe()
411 	dp->adp = analogix_dp_probe(dev, &dp->plat_data);  in rockchip_dp_probe()
412 	if (IS_ERR(dp->adp))  in rockchip_dp_probe()
413 		return PTR_ERR(dp->adp);  in rockchip_dp_probe()
424 	component_del(&pdev->dev, &rockchip_dp_component_ops);  in rockchip_dp_remove()
429 	struct rockchip_dp_device *dp = dev_get_drvdata(dev);  in rockchip_dp_suspend()  local
431 	if (IS_ERR(dp->adp))  in rockchip_dp_suspend()
434 	return analogix_dp_suspend(dp->adp);  in rockchip_dp_suspend()
439 	struct rockchip_dp_device *dp = dev_get_drvdata(dev);  in rockchip_dp_resume()  local
441 	if (IS_ERR(dp->adp))  in rockchip_dp_resume()
444 	return analogix_dp_resume(dp->adp);  in rockchip_dp_resume()
465 	{.compatible = "rockchip,rk3288-dp", .data = &rk3288_dp },
466 	{.compatible = "rockchip,rk3399-edp", .data = &rk3399_edp },
475 		   .name = "rockchip-dp",