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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 | /* * Copyright (C) 2009 Nokia Corporation * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> * * Some code and ideas taken from drivers/video/omap/ driver * by Imre Deak. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program. If not, see <http://www.gnu.org/licenses/>. */ #define DSS_SUBSYS_NAME "DISPLAY" #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/sysfs.h> #include <video/omapdss.h> #include "dss.h" static ssize_t display_name_show(struct omap_dss_device *dssdev, char *buf) { return snprintf(buf, PAGE_SIZE, "%s\n", dssdev->name ? dssdev->name : ""); } static ssize_t display_enabled_show(struct omap_dss_device *dssdev, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", omapdss_device_is_enabled(dssdev)); } static ssize_t display_enabled_store(struct omap_dss_device *dssdev, const char *buf, size_t size) { int r; bool enable; r = strtobool(buf, &enable); if (r) return r; if (enable == omapdss_device_is_enabled(dssdev)) return size; if (omapdss_device_is_connected(dssdev) == false) return -ENODEV; if (enable) { r = dssdev->driver->enable(dssdev); if (r) return r; } else { dssdev->driver->disable(dssdev); } return size; } static ssize_t display_tear_show(struct omap_dss_device *dssdev, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", dssdev->driver->get_te ? dssdev->driver->get_te(dssdev) : 0); } static ssize_t display_tear_store(struct omap_dss_device *dssdev, const char *buf, size_t size) { int r; bool te; if (!dssdev->driver->enable_te || !dssdev->driver->get_te) return -ENOENT; r = strtobool(buf, &te); if (r) return r; r = dssdev->driver->enable_te(dssdev, te); if (r) return r; return size; } static ssize_t display_timings_show(struct omap_dss_device *dssdev, char *buf) { struct omap_video_timings t; if (!dssdev->driver->get_timings) return -ENOENT; dssdev->driver->get_timings(dssdev, &t); return snprintf(buf, PAGE_SIZE, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n", t.pixelclock, t.x_res, t.hfp, t.hbp, t.hsw, t.y_res, t.vfp, t.vbp, t.vsw); } static ssize_t display_timings_store(struct omap_dss_device *dssdev, const char *buf, size_t size) { struct omap_video_timings t = dssdev->panel.timings; int r, found; if (!dssdev->driver->set_timings || !dssdev->driver->check_timings) return -ENOENT; found = 0; #ifdef CONFIG_FB_OMAP2_DSS_VENC if (strncmp("pal", buf, 3) == 0) { t = omap_dss_pal_timings; found = 1; } else if (strncmp("ntsc", buf, 4) == 0) { t = omap_dss_ntsc_timings; found = 1; } #endif if (!found && sscanf(buf, "%u,%hu/%hu/%hu/%hu,%hu/%hu/%hu/%hu", &t.pixelclock, &t.x_res, &t.hfp, &t.hbp, &t.hsw, &t.y_res, &t.vfp, &t.vbp, &t.vsw) != 9) return -EINVAL; r = dssdev->driver->check_timings(dssdev, &t); if (r) return r; dssdev->driver->disable(dssdev); dssdev->driver->set_timings(dssdev, &t); r = dssdev->driver->enable(dssdev); if (r) return r; return size; } static ssize_t display_rotate_show(struct omap_dss_device *dssdev, char *buf) { int rotate; if (!dssdev->driver->get_rotate) return -ENOENT; rotate = dssdev->driver->get_rotate(dssdev); return snprintf(buf, PAGE_SIZE, "%u\n", rotate); } static ssize_t display_rotate_store(struct omap_dss_device *dssdev, const char *buf, size_t size) { int rot, r; if (!dssdev->driver->set_rotate || !dssdev->driver->get_rotate) return -ENOENT; r = kstrtoint(buf, 0, &rot); if (r) return r; r = dssdev->driver->set_rotate(dssdev, rot); if (r) return r; return size; } static ssize_t display_mirror_show(struct omap_dss_device *dssdev, char *buf) { int mirror; if (!dssdev->driver->get_mirror) return -ENOENT; mirror = dssdev->driver->get_mirror(dssdev); return snprintf(buf, PAGE_SIZE, "%u\n", mirror); } static ssize_t display_mirror_store(struct omap_dss_device *dssdev, const char *buf, size_t size) { int r; bool mirror; if (!dssdev->driver->set_mirror || !dssdev->driver->get_mirror) return -ENOENT; r = strtobool(buf, &mirror); if (r) return r; r = dssdev->driver->set_mirror(dssdev, mirror); if (r) return r; return size; } static ssize_t display_wss_show(struct omap_dss_device *dssdev, char *buf) { unsigned int wss; if (!dssdev->driver->get_wss) return -ENOENT; wss = dssdev->driver->get_wss(dssdev); return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss); } static ssize_t display_wss_store(struct omap_dss_device *dssdev, const char *buf, size_t size) { u32 wss; int r; if (!dssdev->driver->get_wss || !dssdev->driver->set_wss) return -ENOENT; r = kstrtou32(buf, 0, &wss); if (r) return r; if (wss > 0xfffff) return -EINVAL; r = dssdev->driver->set_wss(dssdev, wss); if (r) return r; return size; } struct display_attribute { struct attribute attr; ssize_t (*show)(struct omap_dss_device *, char *); ssize_t (*store)(struct omap_dss_device *, const char *, size_t); }; #define DISPLAY_ATTR(_name, _mode, _show, _store) \ struct display_attribute display_attr_##_name = \ __ATTR(_name, _mode, _show, _store) static DISPLAY_ATTR(name, S_IRUGO, display_name_show, NULL); static DISPLAY_ATTR(display_name, S_IRUGO, display_name_show, NULL); static DISPLAY_ATTR(enabled, S_IRUGO|S_IWUSR, display_enabled_show, display_enabled_store); static DISPLAY_ATTR(tear_elim, S_IRUGO|S_IWUSR, display_tear_show, display_tear_store); static DISPLAY_ATTR(timings, S_IRUGO|S_IWUSR, display_timings_show, display_timings_store); static DISPLAY_ATTR(rotate, S_IRUGO|S_IWUSR, display_rotate_show, display_rotate_store); static DISPLAY_ATTR(mirror, S_IRUGO|S_IWUSR, display_mirror_show, display_mirror_store); static DISPLAY_ATTR(wss, S_IRUGO|S_IWUSR, display_wss_show, display_wss_store); static struct attribute *display_sysfs_attrs[] = { &display_attr_name.attr, &display_attr_display_name.attr, &display_attr_enabled.attr, &display_attr_tear_elim.attr, &display_attr_timings.attr, &display_attr_rotate.attr, &display_attr_mirror.attr, &display_attr_wss.attr, NULL }; static ssize_t display_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) { struct omap_dss_device *dssdev; struct display_attribute *display_attr; dssdev = container_of(kobj, struct omap_dss_device, kobj); display_attr = container_of(attr, struct display_attribute, attr); if (!display_attr->show) return -ENOENT; return display_attr->show(dssdev, buf); } static ssize_t display_attr_store(struct kobject *kobj, struct attribute *attr, const char *buf, size_t size) { struct omap_dss_device *dssdev; struct display_attribute *display_attr; dssdev = container_of(kobj, struct omap_dss_device, kobj); display_attr = container_of(attr, struct display_attribute, attr); if (!display_attr->store) return -ENOENT; return display_attr->store(dssdev, buf, size); } static const struct sysfs_ops display_sysfs_ops = { .show = display_attr_show, .store = display_attr_store, }; static struct kobj_type display_ktype = { .sysfs_ops = &display_sysfs_ops, .default_attrs = display_sysfs_attrs, }; int display_init_sysfs(struct platform_device *pdev) { struct omap_dss_device *dssdev = NULL; int r; for_each_dss_dev(dssdev) { r = kobject_init_and_add(&dssdev->kobj, &display_ktype, &pdev->dev.kobj, "%s", dssdev->alias); if (r) { DSSERR("failed to create sysfs files\n"); omap_dss_put_device(dssdev); goto err; } } return 0; err: display_uninit_sysfs(pdev); return r; } void display_uninit_sysfs(struct platform_device *pdev) { struct omap_dss_device *dssdev = NULL; for_each_dss_dev(dssdev) { if (kobject_name(&dssdev->kobj) == NULL) continue; kobject_del(&dssdev->kobj); kobject_put(&dssdev->kobj); memset(&dssdev->kobj, 0, sizeof(dssdev->kobj)); } } |