OMAPDSS: Remove unused get_context_loss_count support
[deliverable/linux.git] / drivers / video / omap2 / dss / display-sysfs.c
CommitLineData
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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>
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27
28#include <video/omapdss.h>
29#include "dss.h"
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30
31static 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) {
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37 omap_dss_put_device(dssdev);
38 return dssdev;
39 }
40 }
41
42 return NULL;
43}
44
45static 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}
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54
55static 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
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60 return snprintf(buf, PAGE_SIZE, "%d\n",
61 omapdss_device_is_enabled(dssdev));
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62}
63
64static 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);
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73 if (r)
74 return r;
75
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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);
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88 }
89
90 return size;
91}
92
93static 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);
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97 return snprintf(buf, PAGE_SIZE, "%d\n",
98 dssdev->driver->get_te ?
99 dssdev->driver->get_te(dssdev) : 0);
100}
101
102static 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);
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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
123static 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);
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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
140static 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);
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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
179static 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);
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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
190static 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);
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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
210static 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);
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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
221static 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);
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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
242static 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);
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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
256static 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);
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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 280static DEVICE_ATTR(display_name, S_IRUGO, display_name_show, NULL);
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281static DEVICE_ATTR(enabled, S_IRUGO|S_IWUSR,
282 display_enabled_show, display_enabled_store);
283static DEVICE_ATTR(tear_elim, S_IRUGO|S_IWUSR,
284 display_tear_show, display_tear_store);
285static DEVICE_ATTR(timings, S_IRUGO|S_IWUSR,
286 display_timings_show, display_timings_store);
287static DEVICE_ATTR(rotate, S_IRUGO|S_IWUSR,
288 display_rotate_show, display_rotate_store);
289static DEVICE_ATTR(mirror, S_IRUGO|S_IWUSR,
290 display_mirror_show, display_mirror_store);
291static DEVICE_ATTR(wss, S_IRUGO|S_IWUSR,
292 display_wss_show, display_wss_store);
293
94140f0d 294static const struct attribute *display_sysfs_attrs[] = {
303e4697 295 &dev_attr_display_name.attr,
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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,
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302 NULL
303};
304
94140f0d 305int display_init_sysfs(struct platform_device *pdev)
3f30b8c2 306{
94140f0d
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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
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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
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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
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323 DSSERR("failed to create sysfs display link\n");
324 goto err;
325 }
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326 }
327
328 return 0;
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329
330err:
331 display_uninit_sysfs(pdev);
332
333 return r;
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334}
335
94140f0d 336void display_uninit_sysfs(struct platform_device *pdev)
3f30b8c2 337{
94140f0d 338 struct omap_dss_device *dssdev = NULL;
3f30b8c2 339
94140f0d
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340 for_each_dss_dev(dssdev) {
341 sysfs_remove_link(&pdev->dev.kobj, dssdev->alias);
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342 sysfs_remove_files(&dssdev->dev->kobj,
343 display_sysfs_attrs);
94140f0d 344 }
3f30b8c2 345}
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