1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/i2c.h>
18 #include <media/cec-notifier.h>
30 	if (output->panel) {  in tegra_output_connector_get_modes()
31 		err = drm_panel_get_modes(output->panel, connector);  in tegra_output_connector_get_modes()
36 	if (output->edid)  in tegra_output_connector_get_modes()
37 		edid = kmemdup(output->edid, sizeof(*edid), GFP_KERNEL);  in tegra_output_connector_get_modes()
38 	else if (output->ddc)  in tegra_output_connector_get_modes()
39 		edid = drm_get_edid(connector, output->ddc);  in tegra_output_connector_get_modes()
41 	cec_notifier_set_phys_addr_from_edid(output->cec, edid);  in tegra_output_connector_get_modes()
58 	if (output->hpd_gpio) {  in tegra_output_connector_detect()
59 		if (gpiod_get_value(output->hpd_gpio) == 0)  in tegra_output_connector_detect()
64 		if (!output->panel)  in tegra_output_connector_detect()
71 		cec_notifier_phys_addr_invalidate(output->cec);  in tegra_output_connector_detect()
80 	if (output->cec)  in tegra_output_connector_destroy()
81 		cec_notifier_conn_unregister(output->cec);  in tegra_output_connector_destroy()
91 	if (output->connector.dev)  in hpd_irq()
92 		drm_helper_hpd_irq_event(output->connector.dev);  in hpd_irq()
99 	struct device_node *ddc, *panel;  in tegra_output_probe()  local
103 	if (!output->of_node)  in tegra_output_probe()
104 		output->of_node = output->dev->of_node;  in tegra_output_probe()
106 	err = drm_of_find_panel_or_bridge(output->of_node, -1, -1,  in tegra_output_probe()
107 					  &output->panel, &output->bridge);  in tegra_output_probe()
108 	if (err && err != -ENODEV)  in tegra_output_probe()
111 	panel = of_parse_phandle(output->of_node, "nvidia,panel", 0);  in tegra_output_probe()
115 		 * device-tree.  in tegra_output_probe()
117 		WARN_ON(output->panel || output->bridge);  in tegra_output_probe()
119 		output->panel = of_drm_find_panel(panel);  in tegra_output_probe()
122 		if (IS_ERR(output->panel))  in tegra_output_probe()
123 			return PTR_ERR(output->panel);  in tegra_output_probe()
126 	output->edid = of_get_property(output->of_node, "nvidia,edid", &size);  in tegra_output_probe()
128 	ddc = of_parse_phandle(output->of_node, "nvidia,ddc-i2c-bus", 0);  in tegra_output_probe()
129 	if (ddc) {  in tegra_output_probe()
130 		output->ddc = of_get_i2c_adapter_by_node(ddc);  in tegra_output_probe()
131 		of_node_put(ddc);  in tegra_output_probe()
133 		if (!output->ddc) {  in tegra_output_probe()
134 			err = -EPROBE_DEFER;  in tegra_output_probe()
139 	output->hpd_gpio = devm_fwnode_gpiod_get(output->dev,  in tegra_output_probe()
140 					of_fwnode_handle(output->of_node),  in tegra_output_probe()
144 	if (IS_ERR(output->hpd_gpio)) {  in tegra_output_probe()
145 		if (PTR_ERR(output->hpd_gpio) != -ENOENT)  in tegra_output_probe()
146 			return PTR_ERR(output->hpd_gpio);  in tegra_output_probe()
148 		output->hpd_gpio = NULL;  in tegra_output_probe()
151 	if (output->hpd_gpio) {  in tegra_output_probe()
152 		err = gpiod_to_irq(output->hpd_gpio);  in tegra_output_probe()
154 			dev_err(output->dev, "gpiod_to_irq(): %d\n", err);  in tegra_output_probe()
158 		output->hpd_irq = err;  in tegra_output_probe()
163 		err = request_threaded_irq(output->hpd_irq, NULL, hpd_irq,  in tegra_output_probe()
166 			dev_err(output->dev, "failed to request IRQ#%u: %d\n",  in tegra_output_probe()
167 				output->hpd_irq, err);  in tegra_output_probe()
171 		output->connector.polled = DRM_CONNECTOR_POLL_HPD;  in tegra_output_probe()
178 		disable_irq(output->hpd_irq);  in tegra_output_probe()
186 	if (output->hpd_gpio)  in tegra_output_remove()
187 		free_irq(output->hpd_irq, output);  in tegra_output_remove()
189 	if (output->ddc)  in tegra_output_remove()
190 		i2c_put_adapter(output->ddc);  in tegra_output_remove()
201 	if (output->hpd_gpio)  in tegra_output_init()
202 		enable_irq(output->hpd_irq);  in tegra_output_init()
204 	connector_type = output->connector.connector_type;  in tegra_output_init()
212 		cec_fill_conn_info_from_drm(&conn_info, &output->connector);  in tegra_output_init()
213 		output->cec = cec_notifier_conn_register(output->dev, NULL,  in tegra_output_init()
215 		if (!output->cec)  in tegra_output_init()
216 			return -ENOMEM;  in tegra_output_init()
228 	if (output->hpd_gpio)  in tegra_output_exit()
229 		disable_irq(output->hpd_irq);  in tegra_output_exit()
235 	struct device *dev = output->dev;  in tegra_output_find_possible_crtcs()
251 	output->encoder.possible_crtcs = mask;  in tegra_output_find_possible_crtcs()
256 	if (output->hpd_irq)  in tegra_output_suspend()
257 		disable_irq(output->hpd_irq);  in tegra_output_suspend()
264 	if (output->hpd_irq)  in tegra_output_resume()
265 		enable_irq(output->hpd_irq);  in tegra_output_resume()