1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Analog TV Connector driver |
4 | * |
5 | * Copyright (C) 2013 Texas Instruments |
6 | * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> |
7 | */ |
8 | |
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 | |
16 | struct panel_drv_data { |
17 | struct omap_dss_device dssdev; |
18 | struct omap_dss_device *in; |
19 | |
20 | struct device *dev; |
21 | |
22 | struct omap_video_timings timings; |
23 | |
24 | bool invert_polarity; |
25 | }; |
26 | |
27 | static const struct omap_video_timings tvc_pal_timings = { |
28 | .x_res = 720, |
29 | .y_res = 574, |
30 | .pixelclock = 13500000, |
31 | .hsw = 64, |
32 | .hfp = 12, |
33 | .hbp = 68, |
34 | .vsw = 5, |
35 | .vfp = 5, |
36 | .vbp = 41, |
37 | |
38 | .interlace = true, |
39 | }; |
40 | |
41 | static const struct of_device_id tvc_of_match[]; |
42 | |
43 | #define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) |
44 | |
45 | static int tvc_connect(struct omap_dss_device *dssdev) |
46 | { |
47 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
48 | struct omap_dss_device *in = ddata->in; |
49 | |
50 | dev_dbg(ddata->dev, "connect\n" ); |
51 | |
52 | if (omapdss_device_is_connected(dssdev)) |
53 | return 0; |
54 | |
55 | return in->ops.atv->connect(in, dssdev); |
56 | } |
57 | |
58 | static void tvc_disconnect(struct omap_dss_device *dssdev) |
59 | { |
60 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
61 | struct omap_dss_device *in = ddata->in; |
62 | |
63 | dev_dbg(ddata->dev, "disconnect\n" ); |
64 | |
65 | if (!omapdss_device_is_connected(dssdev)) |
66 | return; |
67 | |
68 | in->ops.atv->disconnect(in, dssdev); |
69 | } |
70 | |
71 | static int tvc_enable(struct omap_dss_device *dssdev) |
72 | { |
73 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
74 | struct omap_dss_device *in = ddata->in; |
75 | int r; |
76 | |
77 | dev_dbg(ddata->dev, "enable\n" ); |
78 | |
79 | if (!omapdss_device_is_connected(dssdev)) |
80 | return -ENODEV; |
81 | |
82 | if (omapdss_device_is_enabled(dssdev)) |
83 | return 0; |
84 | |
85 | in->ops.atv->set_timings(in, &ddata->timings); |
86 | |
87 | if (!ddata->dev->of_node) { |
88 | in->ops.atv->set_type(in, OMAP_DSS_VENC_TYPE_COMPOSITE); |
89 | |
90 | in->ops.atv->invert_vid_out_polarity(in, |
91 | ddata->invert_polarity); |
92 | } |
93 | |
94 | r = in->ops.atv->enable(in); |
95 | if (r) |
96 | return r; |
97 | |
98 | dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; |
99 | |
100 | return r; |
101 | } |
102 | |
103 | static void tvc_disable(struct omap_dss_device *dssdev) |
104 | { |
105 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
106 | struct omap_dss_device *in = ddata->in; |
107 | |
108 | dev_dbg(ddata->dev, "disable\n" ); |
109 | |
110 | if (!omapdss_device_is_enabled(dssdev)) |
111 | return; |
112 | |
113 | in->ops.atv->disable(in); |
114 | |
115 | dssdev->state = OMAP_DSS_DISPLAY_DISABLED; |
116 | } |
117 | |
118 | static void tvc_set_timings(struct omap_dss_device *dssdev, |
119 | struct omap_video_timings *timings) |
120 | { |
121 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
122 | struct omap_dss_device *in = ddata->in; |
123 | |
124 | ddata->timings = *timings; |
125 | dssdev->panel.timings = *timings; |
126 | |
127 | in->ops.atv->set_timings(in, timings); |
128 | } |
129 | |
130 | static void tvc_get_timings(struct omap_dss_device *dssdev, |
131 | struct omap_video_timings *timings) |
132 | { |
133 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
134 | |
135 | *timings = ddata->timings; |
136 | } |
137 | |
138 | static int tvc_check_timings(struct omap_dss_device *dssdev, |
139 | struct omap_video_timings *timings) |
140 | { |
141 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
142 | struct omap_dss_device *in = ddata->in; |
143 | |
144 | return in->ops.atv->check_timings(in, timings); |
145 | } |
146 | |
147 | static u32 tvc_get_wss(struct omap_dss_device *dssdev) |
148 | { |
149 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
150 | struct omap_dss_device *in = ddata->in; |
151 | |
152 | return in->ops.atv->get_wss(in); |
153 | } |
154 | |
155 | static int tvc_set_wss(struct omap_dss_device *dssdev, u32 wss) |
156 | { |
157 | struct panel_drv_data *ddata = to_panel_data(dssdev); |
158 | struct omap_dss_device *in = ddata->in; |
159 | |
160 | return in->ops.atv->set_wss(in, wss); |
161 | } |
162 | |
163 | static struct omap_dss_driver tvc_driver = { |
164 | .connect = tvc_connect, |
165 | .disconnect = tvc_disconnect, |
166 | |
167 | .enable = tvc_enable, |
168 | .disable = tvc_disable, |
169 | |
170 | .set_timings = tvc_set_timings, |
171 | .get_timings = tvc_get_timings, |
172 | .check_timings = tvc_check_timings, |
173 | |
174 | .get_resolution = omapdss_default_get_resolution, |
175 | |
176 | .get_wss = tvc_get_wss, |
177 | .set_wss = tvc_set_wss, |
178 | }; |
179 | |
180 | static int tvc_probe(struct platform_device *pdev) |
181 | { |
182 | struct panel_drv_data *ddata; |
183 | struct omap_dss_device *dssdev; |
184 | int r; |
185 | |
186 | if (!pdev->dev.of_node) |
187 | return -ENODEV; |
188 | |
189 | ddata = devm_kzalloc(dev: &pdev->dev, size: sizeof(*ddata), GFP_KERNEL); |
190 | if (!ddata) |
191 | return -ENOMEM; |
192 | |
193 | platform_set_drvdata(pdev, data: ddata); |
194 | ddata->dev = &pdev->dev; |
195 | |
196 | ddata->in = omapdss_of_find_source_for_first_ep(node: pdev->dev.of_node); |
197 | r = PTR_ERR_OR_ZERO(ptr: ddata->in); |
198 | if (r) { |
199 | dev_err(&pdev->dev, "failed to find video source\n" ); |
200 | return r; |
201 | } |
202 | |
203 | ddata->timings = tvc_pal_timings; |
204 | |
205 | dssdev = &ddata->dssdev; |
206 | dssdev->driver = &tvc_driver; |
207 | dssdev->dev = &pdev->dev; |
208 | dssdev->type = OMAP_DISPLAY_TYPE_VENC; |
209 | dssdev->owner = THIS_MODULE; |
210 | dssdev->panel.timings = tvc_pal_timings; |
211 | |
212 | r = omapdss_register_display(dssdev); |
213 | if (r) { |
214 | dev_err(&pdev->dev, "Failed to register panel\n" ); |
215 | goto err_reg; |
216 | } |
217 | |
218 | return 0; |
219 | err_reg: |
220 | omap_dss_put_device(dssdev: ddata->in); |
221 | return r; |
222 | } |
223 | |
224 | static int __exit tvc_remove(struct platform_device *pdev) |
225 | { |
226 | struct panel_drv_data *ddata = platform_get_drvdata(pdev); |
227 | struct omap_dss_device *dssdev = &ddata->dssdev; |
228 | struct omap_dss_device *in = ddata->in; |
229 | |
230 | omapdss_unregister_display(dssdev: &ddata->dssdev); |
231 | |
232 | tvc_disable(dssdev); |
233 | tvc_disconnect(dssdev); |
234 | |
235 | omap_dss_put_device(dssdev: in); |
236 | |
237 | return 0; |
238 | } |
239 | |
240 | static const struct of_device_id tvc_of_match[] = { |
241 | { .compatible = "omapdss,svideo-connector" , }, |
242 | { .compatible = "omapdss,composite-video-connector" , }, |
243 | {}, |
244 | }; |
245 | |
246 | MODULE_DEVICE_TABLE(of, tvc_of_match); |
247 | |
248 | static struct platform_driver tvc_connector_driver = { |
249 | .probe = tvc_probe, |
250 | .remove = __exit_p(tvc_remove), |
251 | .driver = { |
252 | .name = "connector-analog-tv" , |
253 | .of_match_table = tvc_of_match, |
254 | .suppress_bind_attrs = true, |
255 | }, |
256 | }; |
257 | |
258 | module_platform_driver(tvc_connector_driver); |
259 | |
260 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>" ); |
261 | MODULE_DESCRIPTION("Analog TV Connector driver" ); |
262 | MODULE_LICENSE("GPL" ); |
263 | |