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