1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Analog TV Connector driver
4 *
5 * Copyright (C) 2013 Texas Instruments
6 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
7 */
8
9#include <linux/slab.h>
10#include <linux/module.h>
11#include <linux/platform_device.h>
12#include <linux/of.h>
13
14#include <video/omapfb_dss.h>
15
16struct panel_drv_data {
17 struct omap_dss_device dssdev;
18 struct omap_dss_device *in;
19
20 struct device *dev;
21
22 struct omap_video_timings timings;
23
24 bool invert_polarity;
25};
26
27static const struct omap_video_timings tvc_pal_timings = {
28 .x_res = 720,
29 .y_res = 574,
30 .pixelclock = 13500000,
31 .hsw = 64,
32 .hfp = 12,
33 .hbp = 68,
34 .vsw = 5,
35 .vfp = 5,
36 .vbp = 41,
37
38 .interlace = true,
39};
40
41static const struct of_device_id tvc_of_match[];
42
43#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
44
45static int tvc_connect(struct omap_dss_device *dssdev)
46{
47 struct panel_drv_data *ddata = to_panel_data(dssdev);
48 struct omap_dss_device *in = ddata->in;
49
50 dev_dbg(ddata->dev, "connect\n");
51
52 if (omapdss_device_is_connected(dssdev))
53 return 0;
54
55 return in->ops.atv->connect(in, dssdev);
56}
57
58static void tvc_disconnect(struct omap_dss_device *dssdev)
59{
60 struct panel_drv_data *ddata = to_panel_data(dssdev);
61 struct omap_dss_device *in = ddata->in;
62
63 dev_dbg(ddata->dev, "disconnect\n");
64
65 if (!omapdss_device_is_connected(dssdev))
66 return;
67
68 in->ops.atv->disconnect(in, dssdev);
69}
70
71static int tvc_enable(struct omap_dss_device *dssdev)
72{
73 struct panel_drv_data *ddata = to_panel_data(dssdev);
74 struct omap_dss_device *in = ddata->in;
75 int r;
76
77 dev_dbg(ddata->dev, "enable\n");
78
79 if (!omapdss_device_is_connected(dssdev))
80 return -ENODEV;
81
82 if (omapdss_device_is_enabled(dssdev))
83 return 0;
84
85 in->ops.atv->set_timings(in, &ddata->timings);
86
87 if (!ddata->dev->of_node) {
88 in->ops.atv->set_type(in, OMAP_DSS_VENC_TYPE_COMPOSITE);
89
90 in->ops.atv->invert_vid_out_polarity(in,
91 ddata->invert_polarity);
92 }
93
94 r = in->ops.atv->enable(in);
95 if (r)
96 return r;
97
98 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
99
100 return r;
101}
102
103static void tvc_disable(struct omap_dss_device *dssdev)
104{
105 struct panel_drv_data *ddata = to_panel_data(dssdev);
106 struct omap_dss_device *in = ddata->in;
107
108 dev_dbg(ddata->dev, "disable\n");
109
110 if (!omapdss_device_is_enabled(dssdev))
111 return;
112
113 in->ops.atv->disable(in);
114
115 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
116}
117
118static void tvc_set_timings(struct omap_dss_device *dssdev,
119 struct omap_video_timings *timings)
120{
121 struct panel_drv_data *ddata = to_panel_data(dssdev);
122 struct omap_dss_device *in = ddata->in;
123
124 ddata->timings = *timings;
125 dssdev->panel.timings = *timings;
126
127 in->ops.atv->set_timings(in, timings);
128}
129
130static void tvc_get_timings(struct omap_dss_device *dssdev,
131 struct omap_video_timings *timings)
132{
133 struct panel_drv_data *ddata = to_panel_data(dssdev);
134
135 *timings = ddata->timings;
136}
137
138static int tvc_check_timings(struct omap_dss_device *dssdev,
139 struct omap_video_timings *timings)
140{
141 struct panel_drv_data *ddata = to_panel_data(dssdev);
142 struct omap_dss_device *in = ddata->in;
143
144 return in->ops.atv->check_timings(in, timings);
145}
146
147static u32 tvc_get_wss(struct omap_dss_device *dssdev)
148{
149 struct panel_drv_data *ddata = to_panel_data(dssdev);
150 struct omap_dss_device *in = ddata->in;
151
152 return in->ops.atv->get_wss(in);
153}
154
155static int tvc_set_wss(struct omap_dss_device *dssdev, u32 wss)
156{
157 struct panel_drv_data *ddata = to_panel_data(dssdev);
158 struct omap_dss_device *in = ddata->in;
159
160 return in->ops.atv->set_wss(in, wss);
161}
162
163static struct omap_dss_driver tvc_driver = {
164 .connect = tvc_connect,
165 .disconnect = tvc_disconnect,
166
167 .enable = tvc_enable,
168 .disable = tvc_disable,
169
170 .set_timings = tvc_set_timings,
171 .get_timings = tvc_get_timings,
172 .check_timings = tvc_check_timings,
173
174 .get_resolution = omapdss_default_get_resolution,
175
176 .get_wss = tvc_get_wss,
177 .set_wss = tvc_set_wss,
178};
179
180static int tvc_probe(struct platform_device *pdev)
181{
182 struct panel_drv_data *ddata;
183 struct omap_dss_device *dssdev;
184 int r;
185
186 if (!pdev->dev.of_node)
187 return -ENODEV;
188
189 ddata = devm_kzalloc(dev: &pdev->dev, size: sizeof(*ddata), GFP_KERNEL);
190 if (!ddata)
191 return -ENOMEM;
192
193 platform_set_drvdata(pdev, data: ddata);
194 ddata->dev = &pdev->dev;
195
196 ddata->in = omapdss_of_find_source_for_first_ep(node: pdev->dev.of_node);
197 r = PTR_ERR_OR_ZERO(ptr: ddata->in);
198 if (r) {
199 dev_err(&pdev->dev, "failed to find video source\n");
200 return r;
201 }
202
203 ddata->timings = tvc_pal_timings;
204
205 dssdev = &ddata->dssdev;
206 dssdev->driver = &tvc_driver;
207 dssdev->dev = &pdev->dev;
208 dssdev->type = OMAP_DISPLAY_TYPE_VENC;
209 dssdev->owner = THIS_MODULE;
210 dssdev->panel.timings = tvc_pal_timings;
211
212 r = omapdss_register_display(dssdev);
213 if (r) {
214 dev_err(&pdev->dev, "Failed to register panel\n");
215 goto err_reg;
216 }
217
218 return 0;
219err_reg:
220 omap_dss_put_device(dssdev: ddata->in);
221 return r;
222}
223
224static int __exit tvc_remove(struct platform_device *pdev)
225{
226 struct panel_drv_data *ddata = platform_get_drvdata(pdev);
227 struct omap_dss_device *dssdev = &ddata->dssdev;
228 struct omap_dss_device *in = ddata->in;
229
230 omapdss_unregister_display(dssdev: &ddata->dssdev);
231
232 tvc_disable(dssdev);
233 tvc_disconnect(dssdev);
234
235 omap_dss_put_device(dssdev: in);
236
237 return 0;
238}
239
240static const struct of_device_id tvc_of_match[] = {
241 { .compatible = "omapdss,svideo-connector", },
242 { .compatible = "omapdss,composite-video-connector", },
243 {},
244};
245
246MODULE_DEVICE_TABLE(of, tvc_of_match);
247
248static struct platform_driver tvc_connector_driver = {
249 .probe = tvc_probe,
250 .remove = __exit_p(tvc_remove),
251 .driver = {
252 .name = "connector-analog-tv",
253 .of_match_table = tvc_of_match,
254 .suppress_bind_attrs = true,
255 },
256};
257
258module_platform_driver(tvc_connector_driver);
259
260MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
261MODULE_DESCRIPTION("Analog TV Connector driver");
262MODULE_LICENSE("GPL");
263

source code of linux/drivers/video/fbdev/omap2/omapfb/displays/connector-analog-tv.c