2 * Copyright (C) 2009 Nokia Corporation
3 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
5 * Some code and ideas taken from drivers/video/omap/ driver
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.
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
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/>.
21 #define DSS_SUBSYS_NAME "DISPLAY"
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/platform_device.h>
26 #include <linux/sysfs.h>
28 #include <video/omapfb_dss.h>
31 static ssize_t display_name_show(struct omap_dss_device *dssdev, char *buf)
33 return snprintf(buf, PAGE_SIZE, "%s\n",
38 static ssize_t display_enabled_show(struct omap_dss_device *dssdev, char *buf)
40 return snprintf(buf, PAGE_SIZE, "%d\n",
41 omapdss_device_is_enabled(dssdev));
44 static ssize_t display_enabled_store(struct omap_dss_device *dssdev,
45 const char *buf, size_t size)
50 r = strtobool(buf, &enable);
54 if (enable == omapdss_device_is_enabled(dssdev))
57 if (omapdss_device_is_connected(dssdev) == false)
61 r = dssdev->driver->enable(dssdev);
65 dssdev->driver->disable(dssdev);
71 static ssize_t display_tear_show(struct omap_dss_device *dssdev, char *buf)
73 return snprintf(buf, PAGE_SIZE, "%d\n",
74 dssdev->driver->get_te ?
75 dssdev->driver->get_te(dssdev) : 0);
78 static ssize_t display_tear_store(struct omap_dss_device *dssdev,
79 const char *buf, size_t size)
84 if (!dssdev->driver->enable_te || !dssdev->driver->get_te)
87 r = strtobool(buf, &te);
91 r = dssdev->driver->enable_te(dssdev, te);
98 static ssize_t display_timings_show(struct omap_dss_device *dssdev, char *buf)
100 struct omap_video_timings t;
102 if (!dssdev->driver->get_timings)
105 dssdev->driver->get_timings(dssdev, &t);
107 return snprintf(buf, PAGE_SIZE, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n",
109 t.x_res, t.hfp, t.hbp, t.hsw,
110 t.y_res, t.vfp, t.vbp, t.vsw);
113 static ssize_t display_timings_store(struct omap_dss_device *dssdev,
114 const char *buf, size_t size)
116 struct omap_video_timings t = dssdev->panel.timings;
119 if (!dssdev->driver->set_timings || !dssdev->driver->check_timings)
123 #ifdef CONFIG_FB_OMAP2_DSS_VENC
124 if (strncmp("pal", buf, 3) == 0) {
125 t = omap_dss_pal_timings;
127 } else if (strncmp("ntsc", buf, 4) == 0) {
128 t = omap_dss_ntsc_timings;
132 if (!found && sscanf(buf, "%u,%hu/%hu/%hu/%hu,%hu/%hu/%hu/%hu",
134 &t.x_res, &t.hfp, &t.hbp, &t.hsw,
135 &t.y_res, &t.vfp, &t.vbp, &t.vsw) != 9)
138 r = dssdev->driver->check_timings(dssdev, &t);
142 dssdev->driver->disable(dssdev);
143 dssdev->driver->set_timings(dssdev, &t);
144 r = dssdev->driver->enable(dssdev);
151 static ssize_t display_rotate_show(struct omap_dss_device *dssdev, char *buf)
154 if (!dssdev->driver->get_rotate)
156 rotate = dssdev->driver->get_rotate(dssdev);
157 return snprintf(buf, PAGE_SIZE, "%u\n", rotate);
160 static ssize_t display_rotate_store(struct omap_dss_device *dssdev,
161 const char *buf, size_t size)
165 if (!dssdev->driver->set_rotate || !dssdev->driver->get_rotate)
168 r = kstrtoint(buf, 0, &rot);
172 r = dssdev->driver->set_rotate(dssdev, rot);
179 static ssize_t display_mirror_show(struct omap_dss_device *dssdev, char *buf)
182 if (!dssdev->driver->get_mirror)
184 mirror = dssdev->driver->get_mirror(dssdev);
185 return snprintf(buf, PAGE_SIZE, "%u\n", mirror);
188 static ssize_t display_mirror_store(struct omap_dss_device *dssdev,
189 const char *buf, size_t size)
194 if (!dssdev->driver->set_mirror || !dssdev->driver->get_mirror)
197 r = strtobool(buf, &mirror);
201 r = dssdev->driver->set_mirror(dssdev, mirror);
208 static ssize_t display_wss_show(struct omap_dss_device *dssdev, char *buf)
212 if (!dssdev->driver->get_wss)
215 wss = dssdev->driver->get_wss(dssdev);
217 return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss);
220 static ssize_t display_wss_store(struct omap_dss_device *dssdev,
221 const char *buf, size_t size)
226 if (!dssdev->driver->get_wss || !dssdev->driver->set_wss)
229 r = kstrtou32(buf, 0, &wss);
236 r = dssdev->driver->set_wss(dssdev, wss);
243 struct 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);
249 #define DISPLAY_ATTR(_name, _mode, _show, _store) \
250 struct display_attribute display_attr_##_name = \
251 __ATTR(_name, _mode, _show, _store)
253 static DISPLAY_ATTR(name, S_IRUGO, display_name_show, NULL);
254 static DISPLAY_ATTR(display_name, S_IRUGO, display_name_show, NULL);
255 static DISPLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
256 display_enabled_show, display_enabled_store);
257 static DISPLAY_ATTR(tear_elim, S_IRUGO|S_IWUSR,
258 display_tear_show, display_tear_store);
259 static DISPLAY_ATTR(timings, S_IRUGO|S_IWUSR,
260 display_timings_show, display_timings_store);
261 static DISPLAY_ATTR(rotate, S_IRUGO|S_IWUSR,
262 display_rotate_show, display_rotate_store);
263 static DISPLAY_ATTR(mirror, S_IRUGO|S_IWUSR,
264 display_mirror_show, display_mirror_store);
265 static DISPLAY_ATTR(wss, S_IRUGO|S_IWUSR,
266 display_wss_show, display_wss_store);
268 static 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,
280 static ssize_t display_attr_show(struct kobject *kobj, struct attribute *attr,
283 struct omap_dss_device *dssdev;
284 struct display_attribute *display_attr;
286 dssdev = container_of(kobj, struct omap_dss_device, kobj);
287 display_attr = container_of(attr, struct display_attribute, attr);
289 if (!display_attr->show)
292 return display_attr->show(dssdev, buf);
295 static ssize_t display_attr_store(struct kobject *kobj, struct attribute *attr,
296 const char *buf, size_t size)
298 struct omap_dss_device *dssdev;
299 struct display_attribute *display_attr;
301 dssdev = container_of(kobj, struct omap_dss_device, kobj);
302 display_attr = container_of(attr, struct display_attribute, attr);
304 if (!display_attr->store)
307 return display_attr->store(dssdev, buf, size);
310 static const struct sysfs_ops display_sysfs_ops = {
311 .show = display_attr_show,
312 .store = display_attr_store,
315 static struct kobj_type display_ktype = {
316 .sysfs_ops = &display_sysfs_ops,
317 .default_attrs = display_sysfs_attrs,
320 int display_init_sysfs(struct platform_device *pdev)
322 struct omap_dss_device *dssdev = NULL;
325 for_each_dss_dev(dssdev) {
326 r = kobject_init_and_add(&dssdev->kobj, &display_ktype,
327 &pdev->dev.kobj, "%s", dssdev->alias);
329 DSSERR("failed to create sysfs files\n");
330 omap_dss_put_device(dssdev);
338 display_uninit_sysfs(pdev);
343 void display_uninit_sysfs(struct platform_device *pdev)
345 struct omap_dss_device *dssdev = NULL;
347 for_each_dss_dev(dssdev) {
348 if (kobject_name(&dssdev->kobj) == NULL)
351 kobject_del(&dssdev->kobj);
352 kobject_put(&dssdev->kobj);
354 memset(&dssdev->kobj, 0, sizeof(dssdev->kobj));