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12#include <linux/slab.h>
13#include <linux/module.h>
14#include <linux/platform_device.h>
15#include <linux/of.h>
16
17#include <video/omapdss.h>
18#include <video/omap-panel-data.h>
19
20struct panel_drv_data {
21 struct omap_dss_device dssdev;
22 struct omap_dss_device *in;
23
24 struct device *dev;
25
26 struct omap_video_timings timings;
27
28 enum omap_dss_venc_type connector_type;
29 bool invert_polarity;
30};
31
32static const struct omap_video_timings tvc_pal_timings = {
33 .x_res = 720,
34 .y_res = 574,
35 .pixelclock = 13500000,
36 .hsw = 64,
37 .hfp = 12,
38 .hbp = 68,
39 .vsw = 5,
40 .vfp = 5,
41 .vbp = 41,
42
43 .interlace = true,
44};
45
46static const struct of_device_id tvc_of_match[];
47
48struct tvc_of_data {
49 enum omap_dss_venc_type connector_type;
50};
51
52#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
53
54static int tvc_connect(struct omap_dss_device *dssdev)
55{
56 struct panel_drv_data *ddata = to_panel_data(dssdev);
57 struct omap_dss_device *in = ddata->in;
58 int r;
59
60 dev_dbg(ddata->dev, "connect\n");
61
62 if (omapdss_device_is_connected(dssdev))
63 return 0;
64
65 r = in->ops.atv->connect(in, dssdev);
66 if (r)
67 return r;
68
69 return 0;
70}
71
72static void tvc_disconnect(struct omap_dss_device *dssdev)
73{
74 struct panel_drv_data *ddata = to_panel_data(dssdev);
75 struct omap_dss_device *in = ddata->in;
76
77 dev_dbg(ddata->dev, "disconnect\n");
78
79 if (!omapdss_device_is_connected(dssdev))
80 return;
81
82 in->ops.atv->disconnect(in, dssdev);
83}
84
85static int tvc_enable(struct omap_dss_device *dssdev)
86{
87 struct panel_drv_data *ddata = to_panel_data(dssdev);
88 struct omap_dss_device *in = ddata->in;
89 int r;
90
91 dev_dbg(ddata->dev, "enable\n");
92
93 if (!omapdss_device_is_connected(dssdev))
94 return -ENODEV;
95
96 if (omapdss_device_is_enabled(dssdev))
97 return 0;
98
99 in->ops.atv->set_timings(in, &ddata->timings);
100
101 if (!ddata->dev->of_node) {
102 in->ops.atv->set_type(in, ddata->connector_type);
103
104 in->ops.atv->invert_vid_out_polarity(in,
105 ddata->invert_polarity);
106 }
107
108 r = in->ops.atv->enable(in);
109 if (r)
110 return r;
111
112 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
113
114 return r;
115}
116
117static void tvc_disable(struct omap_dss_device *dssdev)
118{
119 struct panel_drv_data *ddata = to_panel_data(dssdev);
120 struct omap_dss_device *in = ddata->in;
121
122 dev_dbg(ddata->dev, "disable\n");
123
124 if (!omapdss_device_is_enabled(dssdev))
125 return;
126
127 in->ops.atv->disable(in);
128
129 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
130}
131
132static void tvc_set_timings(struct omap_dss_device *dssdev,
133 struct omap_video_timings *timings)
134{
135 struct panel_drv_data *ddata = to_panel_data(dssdev);
136 struct omap_dss_device *in = ddata->in;
137
138 ddata->timings = *timings;
139 dssdev->panel.timings = *timings;
140
141 in->ops.atv->set_timings(in, timings);
142}
143
144static void tvc_get_timings(struct omap_dss_device *dssdev,
145 struct omap_video_timings *timings)
146{
147 struct panel_drv_data *ddata = to_panel_data(dssdev);
148
149 *timings = ddata->timings;
150}
151
152static int tvc_check_timings(struct omap_dss_device *dssdev,
153 struct omap_video_timings *timings)
154{
155 struct panel_drv_data *ddata = to_panel_data(dssdev);
156 struct omap_dss_device *in = ddata->in;
157
158 return in->ops.atv->check_timings(in, timings);
159}
160
161static u32 tvc_get_wss(struct omap_dss_device *dssdev)
162{
163 struct panel_drv_data *ddata = to_panel_data(dssdev);
164 struct omap_dss_device *in = ddata->in;
165
166 return in->ops.atv->get_wss(in);
167}
168
169static int tvc_set_wss(struct omap_dss_device *dssdev, u32 wss)
170{
171 struct panel_drv_data *ddata = to_panel_data(dssdev);
172 struct omap_dss_device *in = ddata->in;
173
174 return in->ops.atv->set_wss(in, wss);
175}
176
177static struct omap_dss_driver tvc_driver = {
178 .connect = tvc_connect,
179 .disconnect = tvc_disconnect,
180
181 .enable = tvc_enable,
182 .disable = tvc_disable,
183
184 .set_timings = tvc_set_timings,
185 .get_timings = tvc_get_timings,
186 .check_timings = tvc_check_timings,
187
188 .get_resolution = omapdss_default_get_resolution,
189
190 .get_wss = tvc_get_wss,
191 .set_wss = tvc_set_wss,
192};
193
194static int tvc_probe_pdata(struct platform_device *pdev)
195{
196 struct panel_drv_data *ddata = platform_get_drvdata(pdev);
197 struct connector_atv_platform_data *pdata;
198 struct omap_dss_device *in, *dssdev;
199
200 pdata = dev_get_platdata(&pdev->dev);
201
202 in = omap_dss_find_output(pdata->source);
203 if (in == NULL) {
204 dev_err(&pdev->dev, "Failed to find video source\n");
205 return -EPROBE_DEFER;
206 }
207
208 ddata->in = in;
209
210 ddata->connector_type = pdata->connector_type;
211 ddata->invert_polarity = ddata->invert_polarity;
212
213 dssdev = &ddata->dssdev;
214 dssdev->name = pdata->name;
215
216 return 0;
217}
218
219static int tvc_probe_of(struct platform_device *pdev)
220{
221 struct panel_drv_data *ddata = platform_get_drvdata(pdev);
222 struct device_node *node = pdev->dev.of_node;
223 struct omap_dss_device *in;
224
225 in = omapdss_of_find_source_for_first_ep(node);
226 if (IS_ERR(in)) {
227 dev_err(&pdev->dev, "failed to find video source\n");
228 return PTR_ERR(in);
229 }
230
231 ddata->in = in;
232
233 return 0;
234}
235
236static int tvc_probe(struct platform_device *pdev)
237{
238 struct panel_drv_data *ddata;
239 struct omap_dss_device *dssdev;
240 int r;
241
242 ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL);
243 if (!ddata)
244 return -ENOMEM;
245
246 platform_set_drvdata(pdev, ddata);
247 ddata->dev = &pdev->dev;
248
249 if (dev_get_platdata(&pdev->dev)) {
250 r = tvc_probe_pdata(pdev);
251 if (r)
252 return r;
253 } else if (pdev->dev.of_node) {
254 r = tvc_probe_of(pdev);
255 if (r)
256 return r;
257 } else {
258 return -ENODEV;
259 }
260
261 ddata->timings = tvc_pal_timings;
262
263 dssdev = &ddata->dssdev;
264 dssdev->driver = &tvc_driver;
265 dssdev->dev = &pdev->dev;
266 dssdev->type = OMAP_DISPLAY_TYPE_VENC;
267 dssdev->owner = THIS_MODULE;
268 dssdev->panel.timings = tvc_pal_timings;
269
270 r = omapdss_register_display(dssdev);
271 if (r) {
272 dev_err(&pdev->dev, "Failed to register panel\n");
273 goto err_reg;
274 }
275
276 return 0;
277err_reg:
278 omap_dss_put_device(ddata->in);
279 return r;
280}
281
282static int __exit tvc_remove(struct platform_device *pdev)
283{
284 struct panel_drv_data *ddata = platform_get_drvdata(pdev);
285 struct omap_dss_device *dssdev = &ddata->dssdev;
286 struct omap_dss_device *in = ddata->in;
287
288 omapdss_unregister_display(&ddata->dssdev);
289
290 tvc_disable(dssdev);
291 tvc_disconnect(dssdev);
292
293 omap_dss_put_device(in);
294
295 return 0;
296}
297
298static const struct of_device_id tvc_of_match[] = {
299 { .compatible = "omapdss,svideo-connector", },
300 { .compatible = "omapdss,composite-video-connector", },
301 {},
302};
303
304MODULE_DEVICE_TABLE(of, tvc_of_match);
305
306static struct platform_driver tvc_connector_driver = {
307 .probe = tvc_probe,
308 .remove = __exit_p(tvc_remove),
309 .driver = {
310 .name = "connector-analog-tv",
311 .owner = THIS_MODULE,
312 .of_match_table = tvc_of_match,
313 .suppress_bind_attrs = true,
314 },
315};
316
317module_platform_driver(tvc_connector_driver);
318
319MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>");
320MODULE_DESCRIPTION("Analog TV Connector driver");
321MODULE_LICENSE("GPL");
322
