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21#define DSS_SUBSYS_NAME "DISPLAY"
22
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/platform_device.h>
26#include <linux/sysfs.h>
27
28#include <video/omapdss.h>
29#include "dss.h"
30
31static ssize_t display_name_show(struct omap_dss_device *dssdev, char *buf)
32{
33 return snprintf(buf, PAGE_SIZE, "%s\n",
34 dssdev->name ?
35 dssdev->name : "");
36}
37
38static ssize_t display_enabled_show(struct omap_dss_device *dssdev, char *buf)
39{
40 return snprintf(buf, PAGE_SIZE, "%d\n",
41 omapdss_device_is_enabled(dssdev));
42}
43
44static ssize_t display_enabled_store(struct omap_dss_device *dssdev,
45 const char *buf, size_t size)
46{
47 int r;
48 bool enable;
49
50 r = strtobool(buf, &enable);
51 if (r)
52 return r;
53
54 if (enable == omapdss_device_is_enabled(dssdev))
55 return size;
56
57 if (omapdss_device_is_connected(dssdev) == false)
58 return -ENODEV;
59
60 if (enable) {
61 r = dssdev->driver->enable(dssdev);
62 if (r)
63 return r;
64 } else {
65 dssdev->driver->disable(dssdev);
66 }
67
68 return size;
69}
70
71static ssize_t display_tear_show(struct omap_dss_device *dssdev, char *buf)
72{
73 return snprintf(buf, PAGE_SIZE, "%d\n",
74 dssdev->driver->get_te ?
75 dssdev->driver->get_te(dssdev) : 0);
76}
77
78static ssize_t display_tear_store(struct omap_dss_device *dssdev,
79 const char *buf, size_t size)
80{
81 int r;
82 bool te;
83
84 if (!dssdev->driver->enable_te || !dssdev->driver->get_te)
85 return -ENOENT;
86
87 r = strtobool(buf, &te);
88 if (r)
89 return r;
90
91 r = dssdev->driver->enable_te(dssdev, te);
92 if (r)
93 return r;
94
95 return size;
96}
97
98static ssize_t display_timings_show(struct omap_dss_device *dssdev, char *buf)
99{
100 struct omap_video_timings t;
101
102 if (!dssdev->driver->get_timings)
103 return -ENOENT;
104
105 dssdev->driver->get_timings(dssdev, &t);
106
107 return snprintf(buf, PAGE_SIZE, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n",
108 t.pixelclock,
109 t.x_res, t.hfp, t.hbp, t.hsw,
110 t.y_res, t.vfp, t.vbp, t.vsw);
111}
112
113static ssize_t display_timings_store(struct omap_dss_device *dssdev,
114 const char *buf, size_t size)
115{
116 struct omap_video_timings t = dssdev->panel.timings;
117 int r, found;
118
119 if (!dssdev->driver->set_timings || !dssdev->driver->check_timings)
120 return -ENOENT;
121
122 found = 0;
123#ifdef CONFIG_FB_OMAP2_DSS_VENC
124 if (strncmp("pal", buf, 3) == 0) {
125 t = omap_dss_pal_timings;
126 found = 1;
127 } else if (strncmp("ntsc", buf, 4) == 0) {
128 t = omap_dss_ntsc_timings;
129 found = 1;
130 }
131#endif
132 if (!found && sscanf(buf, "%u,%hu/%hu/%hu/%hu,%hu/%hu/%hu/%hu",
133 &t.pixelclock,
134 &t.x_res, &t.hfp, &t.hbp, &t.hsw,
135 &t.y_res, &t.vfp, &t.vbp, &t.vsw) != 9)
136 return -EINVAL;
137
138 r = dssdev->driver->check_timings(dssdev, &t);
139 if (r)
140 return r;
141
142 dssdev->driver->disable(dssdev);
143 dssdev->driver->set_timings(dssdev, &t);
144 r = dssdev->driver->enable(dssdev);
145 if (r)
146 return r;
147
148 return size;
149}
150
151static ssize_t display_rotate_show(struct omap_dss_device *dssdev, char *buf)
152{
153 int rotate;
154 if (!dssdev->driver->get_rotate)
155 return -ENOENT;
156 rotate = dssdev->driver->get_rotate(dssdev);
157 return snprintf(buf, PAGE_SIZE, "%u\n", rotate);
158}
159
160static ssize_t display_rotate_store(struct omap_dss_device *dssdev,
161 const char *buf, size_t size)
162{
163 int rot, r;
164
165 if (!dssdev->driver->set_rotate || !dssdev->driver->get_rotate)
166 return -ENOENT;
167
168 r = kstrtoint(buf, 0, &rot);
169 if (r)
170 return r;
171
172 r = dssdev->driver->set_rotate(dssdev, rot);
173 if (r)
174 return r;
175
176 return size;
177}
178
179static ssize_t display_mirror_show(struct omap_dss_device *dssdev, char *buf)
180{
181 int mirror;
182 if (!dssdev->driver->get_mirror)
183 return -ENOENT;
184 mirror = dssdev->driver->get_mirror(dssdev);
185 return snprintf(buf, PAGE_SIZE, "%u\n", mirror);
186}
187
188static ssize_t display_mirror_store(struct omap_dss_device *dssdev,
189 const char *buf, size_t size)
190{
191 int r;
192 bool mirror;
193
194 if (!dssdev->driver->set_mirror || !dssdev->driver->get_mirror)
195 return -ENOENT;
196
197 r = strtobool(buf, &mirror);
198 if (r)
199 return r;
200
201 r = dssdev->driver->set_mirror(dssdev, mirror);
202 if (r)
203 return r;
204
205 return size;
206}
207
208static ssize_t display_wss_show(struct omap_dss_device *dssdev, char *buf)
209{
210 unsigned int wss;
211
212 if (!dssdev->driver->get_wss)
213 return -ENOENT;
214
215 wss = dssdev->driver->get_wss(dssdev);
216
217 return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss);
218}
219
220static ssize_t display_wss_store(struct omap_dss_device *dssdev,
221 const char *buf, size_t size)
222{
223 u32 wss;
224 int r;
225
226 if (!dssdev->driver->get_wss || !dssdev->driver->set_wss)
227 return -ENOENT;
228
229 r = kstrtou32(buf, 0, &wss);
230 if (r)
231 return r;
232
233 if (wss > 0xfffff)
234 return -EINVAL;
235
236 r = dssdev->driver->set_wss(dssdev, wss);
237 if (r)
238 return r;
239
240 return size;
241}
242
243struct display_attribute {
244 struct attribute attr;
245 ssize_t (*show)(struct omap_dss_device *, char *);
246 ssize_t (*store)(struct omap_dss_device *, const char *, size_t);
247};
248
249#define DISPLAY_ATTR(_name, _mode, _show, _store) \
250 struct display_attribute display_attr_##_name = \
251 __ATTR(_name, _mode, _show, _store)
252
253static DISPLAY_ATTR(name, S_IRUGO, display_name_show, NULL);
254static DISPLAY_ATTR(display_name, S_IRUGO, display_name_show, NULL);
255static DISPLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
256 display_enabled_show, display_enabled_store);
257static DISPLAY_ATTR(tear_elim, S_IRUGO|S_IWUSR,
258 display_tear_show, display_tear_store);
259static DISPLAY_ATTR(timings, S_IRUGO|S_IWUSR,
260 display_timings_show, display_timings_store);
261static DISPLAY_ATTR(rotate, S_IRUGO|S_IWUSR,
262 display_rotate_show, display_rotate_store);
263static DISPLAY_ATTR(mirror, S_IRUGO|S_IWUSR,
264 display_mirror_show, display_mirror_store);
265static DISPLAY_ATTR(wss, S_IRUGO|S_IWUSR,
266 display_wss_show, display_wss_store);
267
268static struct attribute *display_sysfs_attrs[] = {
269 &display_attr_name.attr,
270 &display_attr_display_name.attr,
271 &display_attr_enabled.attr,
272 &display_attr_tear_elim.attr,
273 &display_attr_timings.attr,
274 &display_attr_rotate.attr,
275 &display_attr_mirror.attr,
276 &display_attr_wss.attr,
277 NULL
278};
279
280static ssize_t display_attr_show(struct kobject *kobj, struct attribute *attr,
281 char *buf)
282{
283 struct omap_dss_device *dssdev;
284 struct display_attribute *display_attr;
285
286 dssdev = container_of(kobj, struct omap_dss_device, kobj);
287 display_attr = container_of(attr, struct display_attribute, attr);
288
289 if (!display_attr->show)
290 return -ENOENT;
291
292 return display_attr->show(dssdev, buf);
293}
294
295static ssize_t display_attr_store(struct kobject *kobj, struct attribute *attr,
296 const char *buf, size_t size)
297{
298 struct omap_dss_device *dssdev;
299 struct display_attribute *display_attr;
300
301 dssdev = container_of(kobj, struct omap_dss_device, kobj);
302 display_attr = container_of(attr, struct display_attribute, attr);
303
304 if (!display_attr->store)
305 return -ENOENT;
306
307 return display_attr->store(dssdev, buf, size);
308}
309
310static const struct sysfs_ops display_sysfs_ops = {
311 .show = display_attr_show,
312 .store = display_attr_store,
313};
314
315static struct kobj_type display_ktype = {
316 .sysfs_ops = &display_sysfs_ops,
317 .default_attrs = display_sysfs_attrs,
318};
319
320int display_init_sysfs(struct platform_device *pdev)
321{
322 struct omap_dss_device *dssdev = NULL;
323 int r;
324
325 for_each_dss_dev(dssdev) {
326 r = kobject_init_and_add(&dssdev->kobj, &display_ktype,
327 &pdev->dev.kobj, "%s", dssdev->alias);
328 if (r) {
329 DSSERR("failed to create sysfs files\n");
330 omap_dss_put_device(dssdev);
331 goto err;
332 }
333 }
334
335 return 0;
336
337err:
338 display_uninit_sysfs(pdev);
339
340 return r;
341}
342
343void display_uninit_sysfs(struct platform_device *pdev)
344{
345 struct omap_dss_device *dssdev = NULL;
346
347 for_each_dss_dev(dssdev) {
348 if (kobject_name(&dssdev->kobj) == NULL)
349 continue;
350
351 kobject_del(&dssdev->kobj);
352 kobject_put(&dssdev->kobj);
353
354 memset(&dssdev->kobj, 0, sizeof(dssdev->kobj));
355 }
356}
357
