drm/tegra/output.c

23 	struct tegra_output *output = connector_to_output(connector);
31 	if (output->panel) {
32 		err = drm_panel_get_modes(output->panel, connector);
37 	if (output->edid)
38 		edid = kmemdup(output->edid, sizeof(*edid), GFP_KERNEL);
39 	else if (output->ddc)
40 		edid = drm_get_edid(connector, output->ddc);
42 	cec_notifier_set_phys_addr_from_edid(output->cec, edid);
56 	struct tegra_output *output = connector_to_output(connector);
59 	if (output->hpd_gpio) {
60 		if (gpiod_get_value(output->hpd_gpio) == 0)
65 		if (!output->panel)
72 		cec_notifier_phys_addr_invalidate(output->cec);
79 	struct tegra_output *output = connector_to_output(connector);
81 	if (output->cec)
82 		cec_notifier_conn_unregister(output->cec);
90 	struct tegra_output *output = data;
92 	if (output->connector.dev)
93 		drm_helper_hpd_irq_event(output->connector.dev);
98 int tegra_output_probe(struct tegra_output *output)
104 	if (!output->of_node)
105 		output->of_node = output->dev->of_node;
107 	err = drm_of_find_panel_or_bridge(output->of_node, -1, -1,
108 					  &output->panel, &output->bridge);
112 	panel = of_parse_phandle(output->of_node, "nvidia,panel", 0);
118 		WARN_ON(output->panel || output->bridge);
120 		output->panel = of_drm_find_panel(panel);
123 		if (IS_ERR(output->panel))
124 			return PTR_ERR(output->panel);
127 	output->edid = of_get_property(output->of_node, "nvidia,edid", &size);
129 	ddc = of_parse_phandle(output->of_node, "nvidia,ddc-i2c-bus", 0);
131 		output->ddc = of_get_i2c_adapter_by_node(ddc);
134 		if (!output->ddc) {
140 	output->hpd_gpio = devm_fwnode_gpiod_get(output->dev,
141 					of_fwnode_handle(output->of_node),
145 	if (IS_ERR(output->hpd_gpio)) {
146 		if (PTR_ERR(output->hpd_gpio) != -ENOENT) {
147 			err = PTR_ERR(output->hpd_gpio);
151 		output->hpd_gpio = NULL;
154 	if (output->hpd_gpio) {
155 		err = gpiod_to_irq(output->hpd_gpio);
157 			dev_err(output->dev, "gpiod_to_irq(): %d\n", err);
161 		output->hpd_irq = err;
166 		err = request_threaded_irq(output->hpd_irq, NULL, hpd_irq,
167 					   flags, "hpd", output);
169 			dev_err(output->dev, "failed to request IRQ#%u: %d\n",
170 				output->hpd_irq, err);
174 		output->connector.polled = DRM_CONNECTOR_POLL_HPD;
181 		disable_irq(output->hpd_irq);
187 	if (output->ddc)
188 		i2c_put_adapter(output->ddc);
193 void tegra_output_remove(struct tegra_output *output)
195 	if (output->hpd_gpio)
196 		free_irq(output->hpd_irq, output);
198 	if (output->ddc)
199 		i2c_put_adapter(output->ddc);
202 int tegra_output_init(struct drm_device *drm, struct tegra_output *output)
210 	if (output->hpd_gpio)
211 		enable_irq(output->hpd_irq);
213 	connector_type = output->connector.connector_type;
221 		cec_fill_conn_info_from_drm(&conn_info, &output->connector);
222 		output->cec = cec_notifier_conn_register(output->dev, NULL,
224 		if (!output->cec)
231 void tegra_output_exit(struct tegra_output *output)
237 	if (output->hpd_gpio)
238 		disable_irq(output->hpd_irq);
241 void tegra_output_find_possible_crtcs(struct tegra_output *output,
244 	struct device *dev = output->dev;
256 		dev_warn(dev, "missing output definition for heads in DT\n");
260 	output->encoder.possible_crtcs = mask;
263 int tegra_output_suspend(struct tegra_output *output)
265 	if (output->hpd_irq)
266 		disable_irq(output->hpd_irq);
271 int tegra_output_resume(struct tegra_output *output)
273 	if (output->hpd_irq)
274 		enable_irq(output->hpd_irq);