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61a7f24a TV |
1 | /* |
2 | * Analog TV 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 <video/omapdss.h> | |
17 | #include <video/omap-panel-data.h> | |
18 | ||
19 | struct panel_drv_data { | |
20 | struct omap_dss_device dssdev; | |
21 | struct omap_dss_device *in; | |
22 | ||
23 | struct device *dev; | |
24 | ||
25 | struct omap_video_timings timings; | |
26 | ||
27 | enum omap_dss_venc_type connector_type; | |
28 | bool invert_polarity; | |
29 | }; | |
30 | ||
005358c8 TV |
31 | static const struct omap_video_timings tvc_pal_timings = { |
32 | .x_res = 720, | |
33 | .y_res = 574, | |
34 | .pixel_clock = 13500, | |
35 | .hsw = 64, | |
36 | .hfp = 12, | |
37 | .hbp = 68, | |
38 | .vsw = 5, | |
39 | .vfp = 5, | |
40 | .vbp = 41, | |
41 | ||
42 | .interlace = true, | |
43 | }; | |
44 | ||
61a7f24a TV |
45 | #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) |
46 | ||
47 | static int tvc_connect(struct omap_dss_device *dssdev) | |
48 | { | |
49 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
50 | struct omap_dss_device *in = ddata->in; | |
51 | int r; | |
52 | ||
53 | dev_dbg(ddata->dev, "connect\n"); | |
54 | ||
55 | if (omapdss_device_is_connected(dssdev)) | |
56 | return 0; | |
57 | ||
58 | r = in->ops.atv->connect(in, dssdev); | |
59 | if (r) | |
60 | return r; | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
65 | static void tvc_disconnect(struct omap_dss_device *dssdev) | |
66 | { | |
67 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
68 | struct omap_dss_device *in = ddata->in; | |
69 | ||
70 | dev_dbg(ddata->dev, "disconnect\n"); | |
71 | ||
72 | if (!omapdss_device_is_connected(dssdev)) | |
73 | return; | |
74 | ||
75 | in->ops.atv->disconnect(in, dssdev); | |
76 | } | |
77 | ||
78 | static int tvc_enable(struct omap_dss_device *dssdev) | |
79 | { | |
80 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
81 | struct omap_dss_device *in = ddata->in; | |
82 | int r; | |
83 | ||
84 | dev_dbg(ddata->dev, "enable\n"); | |
85 | ||
86 | if (!omapdss_device_is_connected(dssdev)) | |
87 | return -ENODEV; | |
88 | ||
89 | if (omapdss_device_is_enabled(dssdev)) | |
90 | return 0; | |
91 | ||
92 | in->ops.atv->set_timings(in, &ddata->timings); | |
93 | ||
94 | in->ops.atv->set_type(in, ddata->connector_type); | |
95 | in->ops.atv->invert_vid_out_polarity(in, ddata->invert_polarity); | |
96 | ||
97 | r = in->ops.atv->enable(in); | |
98 | if (r) | |
99 | return r; | |
100 | ||
101 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; | |
102 | ||
103 | return r; | |
104 | } | |
105 | ||
106 | static void tvc_disable(struct omap_dss_device *dssdev) | |
107 | { | |
108 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
109 | struct omap_dss_device *in = ddata->in; | |
110 | ||
111 | dev_dbg(ddata->dev, "disable\n"); | |
112 | ||
113 | if (!omapdss_device_is_enabled(dssdev)) | |
114 | return; | |
115 | ||
116 | in->ops.atv->disable(in); | |
117 | ||
118 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; | |
119 | } | |
120 | ||
121 | static void tvc_set_timings(struct omap_dss_device *dssdev, | |
122 | struct omap_video_timings *timings) | |
123 | { | |
124 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
125 | struct omap_dss_device *in = ddata->in; | |
126 | ||
127 | ddata->timings = *timings; | |
128 | dssdev->panel.timings = *timings; | |
129 | ||
130 | in->ops.atv->set_timings(in, timings); | |
131 | } | |
132 | ||
133 | static void tvc_get_timings(struct omap_dss_device *dssdev, | |
134 | struct omap_video_timings *timings) | |
135 | { | |
136 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
137 | ||
138 | *timings = ddata->timings; | |
139 | } | |
140 | ||
141 | static int tvc_check_timings(struct omap_dss_device *dssdev, | |
142 | struct omap_video_timings *timings) | |
143 | { | |
144 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
145 | struct omap_dss_device *in = ddata->in; | |
146 | ||
147 | return in->ops.atv->check_timings(in, timings); | |
148 | } | |
149 | ||
150 | static u32 tvc_get_wss(struct omap_dss_device *dssdev) | |
151 | { | |
152 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
153 | struct omap_dss_device *in = ddata->in; | |
154 | ||
155 | return in->ops.atv->get_wss(in); | |
156 | } | |
157 | ||
158 | static int tvc_set_wss(struct omap_dss_device *dssdev, u32 wss) | |
159 | { | |
160 | struct panel_drv_data *ddata = to_panel_data(dssdev); | |
161 | struct omap_dss_device *in = ddata->in; | |
162 | ||
163 | return in->ops.atv->set_wss(in, wss); | |
164 | } | |
165 | ||
166 | static struct omap_dss_driver tvc_driver = { | |
167 | .connect = tvc_connect, | |
168 | .disconnect = tvc_disconnect, | |
169 | ||
170 | .enable = tvc_enable, | |
171 | .disable = tvc_disable, | |
172 | ||
173 | .set_timings = tvc_set_timings, | |
174 | .get_timings = tvc_get_timings, | |
175 | .check_timings = tvc_check_timings, | |
176 | ||
177 | .get_resolution = omapdss_default_get_resolution, | |
178 | ||
179 | .get_wss = tvc_get_wss, | |
180 | .set_wss = tvc_set_wss, | |
181 | }; | |
182 | ||
183 | static int tvc_probe_pdata(struct platform_device *pdev) | |
184 | { | |
185 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
186 | struct connector_atv_platform_data *pdata; | |
187 | struct omap_dss_device *in, *dssdev; | |
188 | ||
189 | pdata = dev_get_platdata(&pdev->dev); | |
190 | ||
191 | in = omap_dss_find_output(pdata->source); | |
192 | if (in == NULL) { | |
193 | dev_err(&pdev->dev, "Failed to find video source\n"); | |
194 | return -ENODEV; | |
195 | } | |
196 | ||
197 | ddata->in = in; | |
198 | ||
199 | ddata->connector_type = pdata->connector_type; | |
200 | ddata->invert_polarity = ddata->invert_polarity; | |
201 | ||
202 | dssdev = &ddata->dssdev; | |
203 | dssdev->name = pdata->name; | |
204 | ||
205 | return 0; | |
206 | } | |
207 | ||
208 | static int tvc_probe(struct platform_device *pdev) | |
209 | { | |
210 | struct panel_drv_data *ddata; | |
211 | struct omap_dss_device *dssdev; | |
212 | int r; | |
213 | ||
214 | ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); | |
215 | if (!ddata) | |
216 | return -ENOMEM; | |
217 | ||
218 | platform_set_drvdata(pdev, ddata); | |
219 | ddata->dev = &pdev->dev; | |
220 | ||
221 | if (dev_get_platdata(&pdev->dev)) { | |
222 | r = tvc_probe_pdata(pdev); | |
223 | if (r) | |
224 | return r; | |
225 | } else { | |
226 | return -ENODEV; | |
227 | } | |
228 | ||
005358c8 | 229 | ddata->timings = tvc_pal_timings; |
61a7f24a TV |
230 | |
231 | dssdev = &ddata->dssdev; | |
232 | dssdev->driver = &tvc_driver; | |
233 | dssdev->dev = &pdev->dev; | |
234 | dssdev->type = OMAP_DISPLAY_TYPE_VENC; | |
235 | dssdev->owner = THIS_MODULE; | |
005358c8 | 236 | dssdev->panel.timings = tvc_pal_timings; |
61a7f24a TV |
237 | |
238 | r = omapdss_register_display(dssdev); | |
239 | if (r) { | |
240 | dev_err(&pdev->dev, "Failed to register panel\n"); | |
241 | goto err_reg; | |
242 | } | |
243 | ||
244 | return 0; | |
245 | err_reg: | |
246 | omap_dss_put_device(ddata->in); | |
247 | return r; | |
248 | } | |
249 | ||
250 | static int __exit tvc_remove(struct platform_device *pdev) | |
251 | { | |
252 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); | |
253 | struct omap_dss_device *dssdev = &ddata->dssdev; | |
254 | struct omap_dss_device *in = ddata->in; | |
255 | ||
256 | omapdss_unregister_display(&ddata->dssdev); | |
257 | ||
258 | tvc_disable(dssdev); | |
259 | tvc_disconnect(dssdev); | |
260 | ||
261 | omap_dss_put_device(in); | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static struct platform_driver tvc_connector_driver = { | |
267 | .probe = tvc_probe, | |
268 | .remove = __exit_p(tvc_remove), | |
269 | .driver = { | |
270 | .name = "connector-analog-tv", | |
271 | .owner = THIS_MODULE, | |
272 | }, | |
273 | }; | |
274 | ||
275 | module_platform_driver(tvc_connector_driver); | |
276 | ||
277 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); | |
278 | MODULE_DESCRIPTION("Analog TV Connector driver"); | |
279 | MODULE_LICENSE("GPL"); |