1 // SPDX-License-Identifier: GPL-2.0-only
3  * TFP410 DPI-to-DVI encoder driver
33 	struct omap_dss_device *in = ddata->in;  in tfp410_connect()
37 		return -EBUSY;  in tfp410_connect()
39 	r = in->ops.dpi->connect(in, dssdev);  in tfp410_connect()
43 	dst->src = dssdev;  in tfp410_connect()
44 	dssdev->dst = dst;  in tfp410_connect()
53 	struct omap_dss_device *in = ddata->in;  in tfp410_disconnect()
59 	WARN_ON(dst != dssdev->dst);  in tfp410_disconnect()
60 	if (dst != dssdev->dst)  in tfp410_disconnect()
63 	dst->src = NULL;  in tfp410_disconnect()
64 	dssdev->dst = NULL;  in tfp410_disconnect()
66 	in->ops.dpi->disconnect(in, &ddata->dssdev);  in tfp410_disconnect()
72 	struct omap_dss_device *in = ddata->in;  in tfp410_enable()
76 		return -ENODEV;  in tfp410_enable()
81 	in->ops.dpi->set_timings(in, &ddata->timings);  in tfp410_enable()
82 	if (ddata->data_lines)  in tfp410_enable()
83 		in->ops.dpi->set_data_lines(in, ddata->data_lines);  in tfp410_enable()
85 	r = in->ops.dpi->enable(in);  in tfp410_enable()
89 	if (gpio_is_valid(ddata->pd_gpio))  in tfp410_enable()
90 		gpio_set_value_cansleep(ddata->pd_gpio, 1);  in tfp410_enable()
92 	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;  in tfp410_enable()
100 	struct omap_dss_device *in = ddata->in;  in tfp410_disable()
105 	if (gpio_is_valid(ddata->pd_gpio))  in tfp410_disable()
106 		gpio_set_value_cansleep(ddata->pd_gpio, 0);  in tfp410_disable()
108 	in->ops.dpi->disable(in);  in tfp410_disable()
110 	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;  in tfp410_disable()
115 	timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;  in tfp410_fix_timings()
116 	timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;  in tfp410_fix_timings()
117 	timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH;  in tfp410_fix_timings()
124 	struct omap_dss_device *in = ddata->in;  in tfp410_set_timings()
128 	ddata->timings = *timings;  in tfp410_set_timings()
129 	dssdev->panel.timings = *timings;  in tfp410_set_timings()
131 	in->ops.dpi->set_timings(in, timings);  in tfp410_set_timings()
139 	*timings = ddata->timings;  in tfp410_get_timings()
146 	struct omap_dss_device *in = ddata->in;  in tfp410_check_timings()
150 	return in->ops.dpi->check_timings(in, timings);  in tfp410_check_timings()
168 	struct device_node *node = pdev->dev.of_node;  in tfp410_probe_of()
172 	gpio = of_get_named_gpio(node, "powerdown-gpios", 0);  in tfp410_probe_of()
174 	if (gpio_is_valid(gpio) || gpio == -ENOENT) {  in tfp410_probe_of()
175 		ddata->pd_gpio = gpio;  in tfp410_probe_of()
177 		dev_err(&pdev->dev, "failed to parse PD gpio\n");  in tfp410_probe_of()
183 		dev_err(&pdev->dev, "failed to find video source\n");  in tfp410_probe_of()
187 	ddata->in = in;  in tfp410_probe_of()
198 	if (!pdev->dev.of_node)  in tfp410_probe()
199 		return -ENODEV;  in tfp410_probe()
201 	ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);  in tfp410_probe()
203 		return -ENOMEM;  in tfp410_probe()
211 	if (gpio_is_valid(ddata->pd_gpio)) {  in tfp410_probe()
212 		r = devm_gpio_request_one(&pdev->dev, ddata->pd_gpio,  in tfp410_probe()
215 			dev_err(&pdev->dev, "Failed to request PD GPIO %d\n",  in tfp410_probe()
216 					ddata->pd_gpio);  in tfp410_probe()
221 	dssdev = &ddata->dssdev;  in tfp410_probe()
222 	dssdev->ops.dvi = &tfp410_dvi_ops;  in tfp410_probe()
223 	dssdev->dev = &pdev->dev;  in tfp410_probe()
224 	dssdev->type = OMAP_DISPLAY_TYPE_DPI;  in tfp410_probe()
225 	dssdev->output_type = OMAP_DISPLAY_TYPE_DVI;  in tfp410_probe()
226 	dssdev->owner = THIS_MODULE;  in tfp410_probe()
227 	dssdev->phy.dpi.data_lines = ddata->data_lines;  in tfp410_probe()
228 	dssdev->port_num = 1;  in tfp410_probe()
232 		dev_err(&pdev->dev, "Failed to register output\n");  in tfp410_probe()
239 	omap_dss_put_device(ddata->in);  in tfp410_probe()
246 	struct omap_dss_device *dssdev = &ddata->dssdev;  in tfp410_remove()
247 	struct omap_dss_device *in = ddata->in;  in tfp410_remove()
249 	omapdss_unregister_output(&ddata->dssdev);  in tfp410_remove()
257 		tfp410_disconnect(dssdev, dssdev->dst);  in tfp410_remove()
284 MODULE_DESCRIPTION("TFP410 DPI to DVI encoder driver");