Commit | Line | Data |
---|---|---|
3cb07ee6 TV |
1 | /* |
2 | * HDMI Connector driver | |
3 | * | |
4 | * Copyright (C) 2013 Texas Instruments | |
5 | * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License version 2 as published by | |
9 | * the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/slab.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/platform_device.h> | |
15 | ||
16 | #include <drm/drm_edid.h> | |
17 | ||
18 | #include <video/omapdss.h> | |
19 | #include <video/omap-panel-data.h> | |
20 | ||
21 | static const struct omap_video_timings hdmic_default_timings = { | |
22 | .x_res = 640, | |
23 | .y_res = 480, | |
d8d78941 | 24 | .pixelclock = 25175000, |
3cb07ee6 TV |
25 | .hsw = 96, |
26 | .hfp = 16, | |
27 | .hbp = 48, | |
28 | .vsw = 2, | |
29 | .vfp = 11, | |
30 | .vbp = 31, | |
31 | ||
32 | .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, | |
33 | .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, | |
34 | ||
35 | .interlace = false, | |
36 | }; | |
37 | ||
38 | struct panel_drv_data { | |
39 | struct omap_dss_device dssdev; | |
40 | struct omap_dss_device *in; | |
41 | ||
42 | struct device *dev; | |
43 | ||
44 | struct omap_video_timings timings; | |
45 | }; | |
46 | ||
47 | #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) | |
48 | ||
49 | static int hdmic_connect(struct omap_dss_device *dssdev) | |
50 | { | |
51 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
52 | struct omap_dss_device *in = ddata->in; | |
53 | int r; | |
54 | ||
55 | dev_dbg(ddata->dev, "connect\n"); | |
56 | ||
57 | if (omapdss_device_is_connected(dssdev)) | |
58 | return 0; | |
59 | ||
60 | r = in->ops.hdmi->connect(in, dssdev); | |
61 | if (r) | |
62 | return r; | |
63 | ||
64 | return 0; | |
65 | } | |
66 | ||
67 | static void hdmic_disconnect(struct omap_dss_device *dssdev) | |
68 | { | |
69 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
70 | struct omap_dss_device *in = ddata->in; | |
71 | ||
72 | dev_dbg(ddata->dev, "disconnect\n"); | |
73 | ||
74 | if (!omapdss_device_is_connected(dssdev)) | |
75 | return; | |
76 | ||
77 | in->ops.hdmi->disconnect(in, dssdev); | |
78 | } | |
79 | ||
80 | static int hdmic_enable(struct omap_dss_device *dssdev) | |
81 | { | |
82 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
83 | struct omap_dss_device *in = ddata->in; | |
84 | int r; | |
85 | ||
86 | dev_dbg(ddata->dev, "enable\n"); | |
87 | ||
88 | if (!omapdss_device_is_connected(dssdev)) | |
89 | return -ENODEV; | |
90 | ||
91 | if (omapdss_device_is_enabled(dssdev)) | |
92 | return 0; | |
93 | ||
94 | in->ops.hdmi->set_timings(in, &ddata->timings); | |
95 | ||
96 | r = in->ops.hdmi->enable(in); | |
97 | if (r) | |
98 | return r; | |
99 | ||
100 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; | |
101 | ||
102 | return r; | |
103 | } | |
104 | ||
105 | static void hdmic_disable(struct omap_dss_device *dssdev) | |
106 | { | |
107 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
108 | struct omap_dss_device *in = ddata->in; | |
109 | ||
110 | dev_dbg(ddata->dev, "disable\n"); | |
111 | ||
112 | if (!omapdss_device_is_enabled(dssdev)) | |
113 | return; | |
114 | ||
115 | in->ops.hdmi->disable(in); | |
116 | ||
117 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; | |
118 | } | |
119 | ||
120 | static void hdmic_set_timings(struct omap_dss_device *dssdev, | |
121 | struct omap_video_timings *timings) | |
122 | { | |
123 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
124 | struct omap_dss_device *in = ddata->in; | |
125 | ||
126 | ddata->timings = *timings; | |
127 | dssdev->panel.timings = *timings; | |
128 | ||
129 | in->ops.hdmi->set_timings(in, timings); | |
130 | } | |
131 | ||
132 | static void hdmic_get_timings(struct omap_dss_device *dssdev, | |
133 | struct omap_video_timings *timings) | |
134 | { | |
135 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
136 | ||
137 | *timings = ddata->timings; | |
138 | } | |
139 | ||
140 | static int hdmic_check_timings(struct omap_dss_device *dssdev, | |
141 | struct omap_video_timings *timings) | |
142 | { | |
143 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
144 | struct omap_dss_device *in = ddata->in; | |
145 | ||
146 | return in->ops.hdmi->check_timings(in, timings); | |
147 | } | |
148 | ||
149 | static int hdmic_read_edid(struct omap_dss_device *dssdev, | |
150 | u8 *edid, int len) | |
151 | { | |
152 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
153 | struct omap_dss_device *in = ddata->in; | |
154 | ||
155 | return in->ops.hdmi->read_edid(in, edid, len); | |
156 | } | |
157 | ||
158 | static bool hdmic_detect(struct omap_dss_device *dssdev) | |
159 | { | |
160 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
161 | struct omap_dss_device *in = ddata->in; | |
162 | ||
163 | return in->ops.hdmi->detect(in); | |
164 | } | |
165 | ||
166 | static int hdmic_audio_enable(struct omap_dss_device *dssdev) | |
167 | { | |
168 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
169 | struct omap_dss_device *in = ddata->in; | |
170 | int r; | |
171 | ||
172 | /* enable audio only if the display is active */ | |
173 | if (!omapdss_device_is_enabled(dssdev)) | |
174 | return -EPERM; | |
175 | ||
176 | r = in->ops.hdmi->audio_enable(in); | |
177 | if (r) | |
178 | return r; | |
179 | ||
180 | dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED; | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | static void hdmic_audio_disable(struct omap_dss_device *dssdev) | |
186 | { | |
187 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
188 | struct omap_dss_device *in = ddata->in; | |
189 | ||
190 | in->ops.hdmi->audio_disable(in); | |
191 | ||
192 | dssdev->audio_state = OMAP_DSS_AUDIO_DISABLED; | |
193 | } | |
194 | ||
195 | static int hdmic_audio_start(struct omap_dss_device *dssdev) | |
196 | { | |
197 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
198 | struct omap_dss_device *in = ddata->in; | |
199 | int r; | |
200 | ||
201 | /* | |
202 | * No need to check the panel state. It was checked when trasitioning | |
203 | * to AUDIO_ENABLED. | |
204 | */ | |
205 | if (dssdev->audio_state != OMAP_DSS_AUDIO_ENABLED) | |
206 | return -EPERM; | |
207 | ||
208 | r = in->ops.hdmi->audio_start(in); | |
209 | if (r) | |
210 | return r; | |
211 | ||
212 | dssdev->audio_state = OMAP_DSS_AUDIO_PLAYING; | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static void hdmic_audio_stop(struct omap_dss_device *dssdev) | |
218 | { | |
219 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
220 | struct omap_dss_device *in = ddata->in; | |
221 | ||
222 | in->ops.hdmi->audio_stop(in); | |
223 | ||
224 | dssdev->audio_state = OMAP_DSS_AUDIO_ENABLED; | |
225 | } | |
226 | ||
227 | static bool hdmic_audio_supported(struct omap_dss_device *dssdev) | |
228 | { | |
229 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
230 | struct omap_dss_device *in = ddata->in; | |
231 | ||
232 | if (!omapdss_device_is_enabled(dssdev)) | |
233 | return false; | |
234 | ||
235 | return in->ops.hdmi->audio_supported(in); | |
236 | } | |
237 | ||
238 | static int hdmic_audio_config(struct omap_dss_device *dssdev, | |
239 | struct omap_dss_audio *audio) | |
240 | { | |
241 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
242 | struct omap_dss_device *in = ddata->in; | |
243 | int r; | |
244 | ||
245 | /* config audio only if the display is active */ | |
246 | if (!omapdss_device_is_enabled(dssdev)) | |
247 | return -EPERM; | |
248 | ||
249 | r = in->ops.hdmi->audio_config(in, audio); | |
250 | if (r) | |
251 | return r; | |
252 | ||
253 | dssdev->audio_state = OMAP_DSS_AUDIO_CONFIGURED; | |
254 | ||
255 | return 0; | |
256 | } | |
257 | ||
258 | static struct omap_dss_driver hdmic_driver = { | |
259 | .connect = hdmic_connect, | |
260 | .disconnect = hdmic_disconnect, | |
261 | ||
262 | .enable = hdmic_enable, | |
263 | .disable = hdmic_disable, | |
264 | ||
265 | .set_timings = hdmic_set_timings, | |
266 | .get_timings = hdmic_get_timings, | |
267 | .check_timings = hdmic_check_timings, | |
268 | ||
269 | .get_resolution = omapdss_default_get_resolution, | |
270 | ||
271 | .read_edid = hdmic_read_edid, | |
272 | .detect = hdmic_detect, | |
273 | ||
274 | .audio_enable = hdmic_audio_enable, | |
275 | .audio_disable = hdmic_audio_disable, | |
276 | .audio_start = hdmic_audio_start, | |
277 | .audio_stop = hdmic_audio_stop, | |
278 | .audio_supported = hdmic_audio_supported, | |
279 | .audio_config = hdmic_audio_config, | |
280 | }; | |
281 | ||
282 | static int hdmic_probe_pdata(struct platform_device *pdev) | |
283 | { | |
284 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
285 | struct connector_hdmi_platform_data *pdata; | |
286 | struct omap_dss_device *in, *dssdev; | |
287 | ||
288 | pdata = dev_get_platdata(&pdev->dev); | |
289 | ||
290 | in = omap_dss_find_output(pdata->source); | |
291 | if (in == NULL) { | |
292 | dev_err(&pdev->dev, "Failed to find video source\n"); | |
0fd95602 | 293 | return -EPROBE_DEFER; |
3cb07ee6 TV |
294 | } |
295 | ||
296 | ddata->in = in; | |
297 | ||
298 | dssdev = &ddata->dssdev; | |
299 | dssdev->name = pdata->name; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | static int hdmic_probe(struct platform_device *pdev) | |
305 | { | |
306 | struct panel_drv_data *ddata; | |
307 | struct omap_dss_device *dssdev; | |
308 | int r; | |
309 | ||
310 | ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); | |
311 | if (!ddata) | |
312 | return -ENOMEM; | |
313 | ||
314 | platform_set_drvdata(pdev, ddata); | |
315 | ddata->dev = &pdev->dev; | |
316 | ||
317 | if (dev_get_platdata(&pdev->dev)) { | |
318 | r = hdmic_probe_pdata(pdev); | |
319 | if (r) | |
320 | return r; | |
321 | } else { | |
322 | return -ENODEV; | |
323 | } | |
324 | ||
325 | ddata->timings = hdmic_default_timings; | |
326 | ||
327 | dssdev = &ddata->dssdev; | |
328 | dssdev->driver = &hdmic_driver; | |
329 | dssdev->dev = &pdev->dev; | |
330 | dssdev->type = OMAP_DISPLAY_TYPE_HDMI; | |
331 | dssdev->owner = THIS_MODULE; | |
332 | dssdev->panel.timings = hdmic_default_timings; | |
333 | ||
334 | r = omapdss_register_display(dssdev); | |
335 | if (r) { | |
336 | dev_err(&pdev->dev, "Failed to register panel\n"); | |
337 | goto err_reg; | |
338 | } | |
339 | ||
340 | return 0; | |
341 | err_reg: | |
342 | omap_dss_put_device(ddata->in); | |
343 | return r; | |
344 | } | |
345 | ||
346 | static int __exit hdmic_remove(struct platform_device *pdev) | |
347 | { | |
348 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
349 | struct omap_dss_device *dssdev = &ddata->dssdev; | |
350 | struct omap_dss_device *in = ddata->in; | |
351 | ||
352 | omapdss_unregister_display(&ddata->dssdev); | |
353 | ||
354 | hdmic_disable(dssdev); | |
355 | hdmic_disconnect(dssdev); | |
356 | ||
357 | omap_dss_put_device(in); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | static struct platform_driver hdmi_connector_driver = { | |
363 | .probe = hdmic_probe, | |
364 | .remove = __exit_p(hdmic_remove), | |
365 | .driver = { | |
366 | .name = "connector-hdmi", | |
367 | .owner = THIS_MODULE, | |
368 | }, | |
369 | }; | |
370 | ||
371 | module_platform_driver(hdmi_connector_driver); | |
372 | ||
373 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); | |
374 | MODULE_DESCRIPTION("HDMI Connector driver"); | |
375 | MODULE_LICENSE("GPL"); |