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