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3f30b8c2 TV |
1 | /* |
2 | * Copyright (C) 2009 Nokia Corporation | |
3 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> | |
4 | * | |
5 | * Some code and ideas taken from drivers/video/omap/ driver | |
6 | * by Imre Deak. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License version 2 as published by | |
10 | * the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #define DSS_SUBSYS_NAME "DISPLAY" | |
22 | ||
23 | #include <linux/kernel.h> | |
24 | #include <linux/module.h> | |
3f30b8c2 | 25 | #include <linux/platform_device.h> |
94140f0d | 26 | #include <linux/sysfs.h> |
3f30b8c2 TV |
27 | |
28 | #include <video/omapdss.h> | |
29 | #include "dss.h" | |
94140f0d TV |
30 | |
31 | static struct omap_dss_device *to_dss_device_sysfs(struct device *dev) | |
32 | { | |
33 | struct omap_dss_device *dssdev = NULL; | |
34 | ||
35 | for_each_dss_dev(dssdev) { | |
ecc8b370 | 36 | if (dssdev->dev == dev) { |
94140f0d TV |
37 | omap_dss_put_device(dssdev); |
38 | return dssdev; | |
39 | } | |
40 | } | |
41 | ||
42 | return NULL; | |
43 | } | |
44 | ||
45 | static ssize_t display_name_show(struct device *dev, | |
46 | struct device_attribute *attr, char *buf) | |
47 | { | |
48 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); | |
49 | ||
50 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
51 | dssdev->name ? | |
52 | dssdev->name : ""); | |
53 | } | |
3f30b8c2 TV |
54 | |
55 | static ssize_t display_enabled_show(struct device *dev, | |
56 | struct device_attribute *attr, char *buf) | |
57 | { | |
94140f0d | 58 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 | 59 | |
a7e71e7f TV |
60 | return snprintf(buf, PAGE_SIZE, "%d\n", |
61 | omapdss_device_is_enabled(dssdev)); | |
3f30b8c2 TV |
62 | } |
63 | ||
64 | static ssize_t display_enabled_store(struct device *dev, | |
65 | struct device_attribute *attr, | |
66 | const char *buf, size_t size) | |
67 | { | |
94140f0d | 68 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 | 69 | int r; |
a7e71e7f | 70 | bool enable; |
3f30b8c2 | 71 | |
a7e71e7f | 72 | r = strtobool(buf, &enable); |
3f30b8c2 TV |
73 | if (r) |
74 | return r; | |
75 | ||
a7e71e7f TV |
76 | if (enable == omapdss_device_is_enabled(dssdev)) |
77 | return size; | |
78 | ||
79 | if (omapdss_device_is_connected(dssdev) == false) | |
80 | return -ENODEV; | |
81 | ||
82 | if (enable) { | |
83 | r = dssdev->driver->enable(dssdev); | |
84 | if (r) | |
85 | return r; | |
86 | } else { | |
87 | dssdev->driver->disable(dssdev); | |
3f30b8c2 TV |
88 | } |
89 | ||
90 | return size; | |
91 | } | |
92 | ||
93 | static ssize_t display_tear_show(struct device *dev, | |
94 | struct device_attribute *attr, char *buf) | |
95 | { | |
94140f0d | 96 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
97 | return snprintf(buf, PAGE_SIZE, "%d\n", |
98 | dssdev->driver->get_te ? | |
99 | dssdev->driver->get_te(dssdev) : 0); | |
100 | } | |
101 | ||
102 | static ssize_t display_tear_store(struct device *dev, | |
103 | struct device_attribute *attr, const char *buf, size_t size) | |
104 | { | |
94140f0d | 105 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
106 | int r; |
107 | bool te; | |
108 | ||
109 | if (!dssdev->driver->enable_te || !dssdev->driver->get_te) | |
110 | return -ENOENT; | |
111 | ||
112 | r = strtobool(buf, &te); | |
113 | if (r) | |
114 | return r; | |
115 | ||
116 | r = dssdev->driver->enable_te(dssdev, te); | |
117 | if (r) | |
118 | return r; | |
119 | ||
120 | return size; | |
121 | } | |
122 | ||
123 | static ssize_t display_timings_show(struct device *dev, | |
124 | struct device_attribute *attr, char *buf) | |
125 | { | |
94140f0d | 126 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
127 | struct omap_video_timings t; |
128 | ||
129 | if (!dssdev->driver->get_timings) | |
130 | return -ENOENT; | |
131 | ||
132 | dssdev->driver->get_timings(dssdev, &t); | |
133 | ||
134 | return snprintf(buf, PAGE_SIZE, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n", | |
135 | t.pixel_clock, | |
136 | t.x_res, t.hfp, t.hbp, t.hsw, | |
137 | t.y_res, t.vfp, t.vbp, t.vsw); | |
138 | } | |
139 | ||
140 | static ssize_t display_timings_store(struct device *dev, | |
141 | struct device_attribute *attr, const char *buf, size_t size) | |
142 | { | |
94140f0d | 143 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
144 | struct omap_video_timings t = dssdev->panel.timings; |
145 | int r, found; | |
146 | ||
147 | if (!dssdev->driver->set_timings || !dssdev->driver->check_timings) | |
148 | return -ENOENT; | |
149 | ||
150 | found = 0; | |
151 | #ifdef CONFIG_OMAP2_DSS_VENC | |
152 | if (strncmp("pal", buf, 3) == 0) { | |
153 | t = omap_dss_pal_timings; | |
154 | found = 1; | |
155 | } else if (strncmp("ntsc", buf, 4) == 0) { | |
156 | t = omap_dss_ntsc_timings; | |
157 | found = 1; | |
158 | } | |
159 | #endif | |
160 | if (!found && sscanf(buf, "%u,%hu/%hu/%hu/%hu,%hu/%hu/%hu/%hu", | |
161 | &t.pixel_clock, | |
162 | &t.x_res, &t.hfp, &t.hbp, &t.hsw, | |
163 | &t.y_res, &t.vfp, &t.vbp, &t.vsw) != 9) | |
164 | return -EINVAL; | |
165 | ||
166 | r = dssdev->driver->check_timings(dssdev, &t); | |
167 | if (r) | |
168 | return r; | |
169 | ||
170 | dssdev->driver->disable(dssdev); | |
171 | dssdev->driver->set_timings(dssdev, &t); | |
172 | r = dssdev->driver->enable(dssdev); | |
173 | if (r) | |
174 | return r; | |
175 | ||
176 | return size; | |
177 | } | |
178 | ||
179 | static ssize_t display_rotate_show(struct device *dev, | |
180 | struct device_attribute *attr, char *buf) | |
181 | { | |
94140f0d | 182 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
183 | int rotate; |
184 | if (!dssdev->driver->get_rotate) | |
185 | return -ENOENT; | |
186 | rotate = dssdev->driver->get_rotate(dssdev); | |
187 | return snprintf(buf, PAGE_SIZE, "%u\n", rotate); | |
188 | } | |
189 | ||
190 | static ssize_t display_rotate_store(struct device *dev, | |
191 | struct device_attribute *attr, const char *buf, size_t size) | |
192 | { | |
94140f0d | 193 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
194 | int rot, r; |
195 | ||
196 | if (!dssdev->driver->set_rotate || !dssdev->driver->get_rotate) | |
197 | return -ENOENT; | |
198 | ||
199 | r = kstrtoint(buf, 0, &rot); | |
200 | if (r) | |
201 | return r; | |
202 | ||
203 | r = dssdev->driver->set_rotate(dssdev, rot); | |
204 | if (r) | |
205 | return r; | |
206 | ||
207 | return size; | |
208 | } | |
209 | ||
210 | static ssize_t display_mirror_show(struct device *dev, | |
211 | struct device_attribute *attr, char *buf) | |
212 | { | |
94140f0d | 213 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
214 | int mirror; |
215 | if (!dssdev->driver->get_mirror) | |
216 | return -ENOENT; | |
217 | mirror = dssdev->driver->get_mirror(dssdev); | |
218 | return snprintf(buf, PAGE_SIZE, "%u\n", mirror); | |
219 | } | |
220 | ||
221 | static ssize_t display_mirror_store(struct device *dev, | |
222 | struct device_attribute *attr, const char *buf, size_t size) | |
223 | { | |
94140f0d | 224 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
225 | int r; |
226 | bool mirror; | |
227 | ||
228 | if (!dssdev->driver->set_mirror || !dssdev->driver->get_mirror) | |
229 | return -ENOENT; | |
230 | ||
231 | r = strtobool(buf, &mirror); | |
232 | if (r) | |
233 | return r; | |
234 | ||
235 | r = dssdev->driver->set_mirror(dssdev, mirror); | |
236 | if (r) | |
237 | return r; | |
238 | ||
239 | return size; | |
240 | } | |
241 | ||
242 | static ssize_t display_wss_show(struct device *dev, | |
243 | struct device_attribute *attr, char *buf) | |
244 | { | |
94140f0d | 245 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
246 | unsigned int wss; |
247 | ||
248 | if (!dssdev->driver->get_wss) | |
249 | return -ENOENT; | |
250 | ||
251 | wss = dssdev->driver->get_wss(dssdev); | |
252 | ||
253 | return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss); | |
254 | } | |
255 | ||
256 | static ssize_t display_wss_store(struct device *dev, | |
257 | struct device_attribute *attr, const char *buf, size_t size) | |
258 | { | |
94140f0d | 259 | struct omap_dss_device *dssdev = to_dss_device_sysfs(dev); |
3f30b8c2 TV |
260 | u32 wss; |
261 | int r; | |
262 | ||
263 | if (!dssdev->driver->get_wss || !dssdev->driver->set_wss) | |
264 | return -ENOENT; | |
265 | ||
266 | r = kstrtou32(buf, 0, &wss); | |
267 | if (r) | |
268 | return r; | |
269 | ||
270 | if (wss > 0xfffff) | |
271 | return -EINVAL; | |
272 | ||
273 | r = dssdev->driver->set_wss(dssdev, wss); | |
274 | if (r) | |
275 | return r; | |
276 | ||
277 | return size; | |
278 | } | |
279 | ||
303e4697 | 280 | static DEVICE_ATTR(display_name, S_IRUGO, display_name_show, NULL); |
3f30b8c2 TV |
281 | static DEVICE_ATTR(enabled, S_IRUGO|S_IWUSR, |
282 | display_enabled_show, display_enabled_store); | |
283 | static DEVICE_ATTR(tear_elim, S_IRUGO|S_IWUSR, | |
284 | display_tear_show, display_tear_store); | |
285 | static DEVICE_ATTR(timings, S_IRUGO|S_IWUSR, | |
286 | display_timings_show, display_timings_store); | |
287 | static DEVICE_ATTR(rotate, S_IRUGO|S_IWUSR, | |
288 | display_rotate_show, display_rotate_store); | |
289 | static DEVICE_ATTR(mirror, S_IRUGO|S_IWUSR, | |
290 | display_mirror_show, display_mirror_store); | |
291 | static DEVICE_ATTR(wss, S_IRUGO|S_IWUSR, | |
292 | display_wss_show, display_wss_store); | |
293 | ||
94140f0d | 294 | static const struct attribute *display_sysfs_attrs[] = { |
303e4697 | 295 | &dev_attr_display_name.attr, |
94140f0d TV |
296 | &dev_attr_enabled.attr, |
297 | &dev_attr_tear_elim.attr, | |
298 | &dev_attr_timings.attr, | |
299 | &dev_attr_rotate.attr, | |
300 | &dev_attr_mirror.attr, | |
301 | &dev_attr_wss.attr, | |
3f30b8c2 TV |
302 | NULL |
303 | }; | |
304 | ||
94140f0d | 305 | int display_init_sysfs(struct platform_device *pdev) |
3f30b8c2 | 306 | { |
94140f0d TV |
307 | struct omap_dss_device *dssdev = NULL; |
308 | int r; | |
3f30b8c2 | 309 | |
94140f0d | 310 | for_each_dss_dev(dssdev) { |
ecc8b370 | 311 | struct kobject *kobj = &dssdev->dev->kobj; |
3f30b8c2 | 312 | |
94140f0d TV |
313 | r = sysfs_create_files(kobj, display_sysfs_attrs); |
314 | if (r) { | |
315 | DSSERR("failed to create sysfs files\n"); | |
316 | goto err; | |
3f30b8c2 | 317 | } |
3f30b8c2 | 318 | |
94140f0d TV |
319 | r = sysfs_create_link(&pdev->dev.kobj, kobj, dssdev->alias); |
320 | if (r) { | |
321 | sysfs_remove_files(kobj, display_sysfs_attrs); | |
3f30b8c2 | 322 | |
94140f0d TV |
323 | DSSERR("failed to create sysfs display link\n"); |
324 | goto err; | |
325 | } | |
3f30b8c2 TV |
326 | } |
327 | ||
328 | return 0; | |
94140f0d TV |
329 | |
330 | err: | |
331 | display_uninit_sysfs(pdev); | |
332 | ||
333 | return r; | |
3f30b8c2 TV |
334 | } |
335 | ||
94140f0d | 336 | void display_uninit_sysfs(struct platform_device *pdev) |
3f30b8c2 | 337 | { |
94140f0d | 338 | struct omap_dss_device *dssdev = NULL; |
3f30b8c2 | 339 | |
94140f0d TV |
340 | for_each_dss_dev(dssdev) { |
341 | sysfs_remove_link(&pdev->dev.kobj, dssdev->alias); | |
ecc8b370 TV |
342 | sysfs_remove_files(&dssdev->dev->kobj, |
343 | display_sysfs_attrs); | |
94140f0d | 344 | } |
3f30b8c2 | 345 | } |