drivers/video/rockchip/rkfb_sysfs.c

   1 /*
   2  * linux/drivers/video/rockchip/rkfb-sysfs.c
   3  *
   4  * Copyright (C) 2012 Rockchip Corporation
   5  * Author: yxj<yxj@rock-chips.com>
   6  *
   7  * Some code and ideas taken from
   8  *drivers/video/omap2/omapfb/omapfb-sys.c
   9  *driver by Tomi Valkeinen.
  10  *
  11  *
  12  * This program is free software; you can redistribute it and/or modify it
  13  * under the terms of the GNU General Public License version 2 as published by
  14  * the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but WITHOUT
  17  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  19  * more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along with
  22  * this program.  If not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #include <linux/fb.h>
  26 #include <linux/sysfs.h>
  27 #include <linux/device.h>
  28 #include <linux/uaccess.h>
  29 #include <linux/platform_device.h>
  30 #include <linux/kernel.h>
  31 #include <linux/mm.h>
  32 #include <asm/div64.h>
  33 #include <linux/rk_screen.h>
  34 #include <linux/rk_fb.h>
  35
  36 static ssize_t show_screen_info(struct device *dev,
  37                                 struct device_attribute *attr, char *buf)
  38 {
  39         struct fb_info *fbi = dev_get_drvdata(dev);
  40         struct rk_lcdc_driver *dev_drv = (struct rk_lcdc_driver *)fbi->par;
  41         struct rk_screen *screen = dev_drv->screen0;
  42         int fps;
  43         u32 x = (screen->mode.left_margin + screen->mode.right_margin + screen->mode.xres + screen->mode.hsync_len);
  44         u32 y = (screen->mode.upper_margin + screen->mode.lower_margin + screen->mode.yres + screen->mode.vsync_len);
  45         u64 ft = (u64)x * y * (dev_drv->pixclock);      // one frame time ,(pico seconds)
  46         fps = div64_u64(1000000000000llu, ft);
  47         return snprintf(buf, PAGE_SIZE, "xres:%d\nyres:%d\nfps:%d\n",
  48                         screen->mode.xres, screen->mode.yres, fps);
  49 }
  50
  51 static ssize_t show_disp_info(struct device *dev,
  52                               struct device_attribute *attr, char *buf)
  53 {
  54         struct fb_info *fbi = dev_get_drvdata(dev);
  55         struct rk_lcdc_driver *dev_drv = (struct rk_lcdc_driver *)fbi->par;
  56         int win_id = dev_drv->ops->fb_get_win_id(dev_drv, fbi->fix.id);
  57         if (dev_drv->ops->get_disp_info)
  58                 return dev_drv->ops->get_disp_info(dev_drv, buf, win_id);
  59
  60         return 0;
  61 }
  62
  63 static ssize_t show_phys(struct device *dev,
  64                          struct device_attribute *attr, char *buf)
  65 {
  66         struct fb_info *fbi = dev_get_drvdata(dev);
  67         return snprintf(buf, PAGE_SIZE, "0x%lx-----0x%x\n",
  68                         fbi->fix.smem_start, fbi->fix.smem_len);
  69 }
  70
  71 static ssize_t show_virt(struct device *dev,
  72                          struct device_attribute *attr, char *buf)
  73 {
  74         struct fb_info *fbi = dev_get_drvdata(dev);
  75
  76         return snprintf(buf, PAGE_SIZE, "0x%p-----0x%x\n",
  77                         fbi->screen_base, fbi->fix.smem_len);
  78 }
  79
  80 static ssize_t show_fb_state(struct device *dev,
  81                              struct device_attribute *attr, char *buf)
  82 {
  83         struct fb_info *fbi = dev_get_drvdata(dev);
  84         struct rk_lcdc_driver *dev_drv =
  85             (struct rk_lcdc_driver *)fbi->par;
  86         int win_id = dev_drv->ops->fb_get_win_id(dev_drv, fbi->fix.id);
  87         int state = dev_drv->ops->get_win_state(dev_drv, win_id);
  88         return snprintf(buf, PAGE_SIZE, "%s\n", state ? "enabled" : "disabled");
  89
  90 }
  91
  92 static ssize_t show_dual_mode(struct device *dev,
  93                               struct device_attribute *attr, char *buf)
  94 {
  95         struct fb_info *fbi = dev_get_drvdata(dev);
  96         struct rk_fb *rk_fb = dev_get_drvdata(fbi->device);
  97         int mode= rk_fb->disp_mode;
  98         return snprintf(buf, PAGE_SIZE, "%d\n", mode);
  99
 100 }
 101
 102 static ssize_t set_fb_state(struct device *dev, struct device_attribute *attr,
 103                             const char *buf, size_t count)
 104 {
 105         struct fb_info *fbi = dev_get_drvdata(dev);
 106         struct rk_lcdc_driver *dev_drv =
 107             (struct rk_lcdc_driver *)fbi->par;
 108         int win_id = dev_drv->ops->fb_get_win_id(dev_drv, fbi->fix.id);
 109         int state;
 110         int ret;
 111         ret = kstrtoint(buf, 0, &state);
 112         if (ret) {
 113                 return ret;
 114         }
 115         dev_drv->ops->open(dev_drv, win_id, state);
 116         return count;
 117 }
 118
 119 static ssize_t show_overlay(struct device *dev,
 120                             struct device_attribute *attr, char *buf)
 121 {
 122         struct fb_info *fbi = dev_get_drvdata(dev);
 123         struct rk_lcdc_driver *dev_drv =
 124             (struct rk_lcdc_driver *)fbi->par;
 125         int ovl;
 126         ovl = dev_drv->ops->ovl_mgr(dev_drv, 0, 0);
 127         if (ovl < 0) {
 128                 return ovl;
 129         }
 130
 131         return snprintf(buf, PAGE_SIZE, "%s\n",
 132                         ovl ? "win0 on the top of win1" :
 133                         "win1 on the top of win0");
 134
 135 }
 136
 137 static ssize_t set_overlay(struct device *dev, struct device_attribute *attr,
 138                            const char *buf, size_t count)
 139 {
 140         struct fb_info *fbi = dev_get_drvdata(dev);
 141         struct rk_lcdc_driver *dev_drv =
 142             (struct rk_lcdc_driver *)fbi->par;
 143         int ovl;
 144         int ret;
 145         ret = kstrtoint(buf, 0, &ovl);
 146         if (ret) {
 147                 return ret;
 148         }
 149         ret = dev_drv->ops->ovl_mgr(dev_drv, ovl, 1);
 150         if (ret < 0) {
 151                 return ret;
 152         }
 153
 154         return count;
 155 }
 156
 157 static ssize_t show_fps(struct device *dev,
 158                         struct device_attribute *attr, char *buf)
 159 {
 160         struct fb_info *fbi = dev_get_drvdata(dev);
 161         struct rk_lcdc_driver *dev_drv =
 162             (struct rk_lcdc_driver *)fbi->par;
 163         int fps;
 164         fps = dev_drv->ops->fps_mgr(dev_drv, 0, 0);
 165         if (fps < 0) {
 166                 return fps;
 167         }
 168
 169         return snprintf(buf, PAGE_SIZE, "fps:%d\n", fps);
 170
 171 }
 172
 173 static ssize_t set_fps(struct device *dev, struct device_attribute *attr,
 174                        const char *buf, size_t count)
 175 {
 176         struct fb_info *fbi = dev_get_drvdata(dev);
 177         struct rk_lcdc_driver *dev_drv =
 178             (struct rk_lcdc_driver *)fbi->par;
 179         int fps;
 180         int ret;
 181         ret = kstrtoint(buf, 0, &fps);
 182         if (ret) {
 183                 return ret;
 184         }
 185         ret = dev_drv->ops->fps_mgr(dev_drv, fps, 1);
 186         if (ret < 0) {
 187                 return ret;
 188         }
 189
 190         return count;
 191 }
 192
 193 static ssize_t show_fb_win_map(struct device *dev,
 194                                struct device_attribute *attr, char *buf)
 195 {
 196         int ret;
 197         struct fb_info *fbi = dev_get_drvdata(dev);
 198         struct rk_lcdc_driver *dev_drv =
 199             (struct rk_lcdc_driver *)fbi->par;
 200
 201         mutex_lock(&dev_drv->fb_win_id_mutex);
 202         ret =
 203             snprintf(buf, PAGE_SIZE, "fb0:win%d\nfb1:win%d\nfb2:win%d\n",
 204                      dev_drv->fb0_win_id, dev_drv->fb1_win_id,
 205                      dev_drv->fb2_win_id);
 206         mutex_unlock(&dev_drv->fb_win_id_mutex);
 207
 208         return ret;
 209
 210 }
 211
 212 static ssize_t set_fb_win_map(struct device *dev, struct device_attribute *attr,
 213                               const char *buf, size_t count)
 214 {
 215         struct fb_info *fbi = dev_get_drvdata(dev);
 216         struct rk_lcdc_driver *dev_drv =
 217             (struct rk_lcdc_driver *)fbi->par;
 218         int order;
 219         int ret;
 220         ret = kstrtoint(buf, 0, &order);
 221         if ((order != FB0_WIN2_FB1_WIN1_FB2_WIN0)
 222             && (order != FB0_WIN1_FB1_WIN2_FB2_WIN0)
 223             && (order != FB0_WIN2_FB1_WIN0_FB2_WIN1)
 224             && (order != FB0_WIN0_FB1_WIN2_FB2_WIN1)
 225             && (order != FB0_WIN0_FB1_WIN1_FB2_WIN2)
 226             && (order != FB0_WIN1_FB1_WIN0_FB2_WIN2)) {
 227                 printk(KERN_ERR "un supported map\n"
 228                        "you can use the following order:\n" "201:\n"
 229                        "fb0-win1\n" "fb1-win0\n" "fb2-win2\n" "210:\n"
 230                        "fb0-win0\n" "fb1-win1\n" "fb2-win2\n" "120:\n"
 231                        "fb0-win0\n" "fb1-win2\n" "fb2-win1\n" "102:\n"
 232                        "fb0-win2\n" "fb1-win0\n" "fb2-win1\n" "021:\n"
 233                        "fb0-win1\n" "fb1-win2\n" "fb2-win0\n" "012:\n"
 234                        "fb0-win2\n" "fb1-win1\n" "fb2-win0\n");
 235                 return count;
 236         } else {
 237                 dev_drv->ops->fb_win_remap(dev_drv, order);
 238         }
 239
 240         return count;
 241
 242 }
 243
 244 static ssize_t show_dsp_lut(struct device *dev,
 245                             struct device_attribute *attr, char *buf)
 246 {
 247
 248         return 0;
 249 }
 250
 251 static ssize_t set_dsp_lut(struct device *dev, struct device_attribute *attr,
 252                            const char *buf, size_t count)
 253 {
 254         int dsp_lut[256];
 255         const char *start = buf;
 256         int i = 256, temp;
 257         int space_max = 10;
 258
 259         struct fb_info *fbi = dev_get_drvdata(dev);
 260         struct rk_lcdc_driver *dev_drv =
 261             (struct rk_lcdc_driver *)fbi->par;
 262
 263         for (i = 0; i < 256; i++) {
 264                 temp = i;
 265                 dsp_lut[i] = temp + (temp << 8) + (temp << 16); //init by default value
 266         }
 267         //printk("count:%d\n>>%s\n\n",count,start);
 268         for (i = 0; i < 256; i++) {
 269                 space_max = 10; //max space number 10;
 270                 temp = simple_strtoul(start, NULL, 10);
 271                 dsp_lut[i] = temp;
 272                 do {
 273                         start++;
 274                         space_max--;
 275                 } while ((*start != ' ') && space_max);
 276
 277                 if (!space_max)
 278                         break;
 279                 else
 280                         start++;
 281         }
 282 #if 0
 283         for (i = 0; i < 16; i++) {
 284                 for (j = 0; j < 16; j++)
 285                         printk("0x%08x ", dsp_lut[i * 16 + j]);
 286                 printk("\n");
 287         }
 288 #endif
 289         dev_drv->ops->set_dsp_lut(dev_drv, dsp_lut);
 290
 291         return count;
 292
 293 }
 294 static ssize_t show_dsp_cabc(struct device *dev,
 295                             struct device_attribute *attr, char *buf)
 296 {
 297
 298         return 0;
 299 }
 300
 301 static ssize_t set_dsp_cabc(struct device *dev, struct device_attribute *attr,
 302                            const char *buf, size_t count)
 303 {
 304         struct fb_info *fbi = dev_get_drvdata(dev);
 305         struct rk_lcdc_driver *dev_drv =
 306             (struct rk_lcdc_driver *)fbi->par;
 307         int ret,mode=0;
 308
 309         ret = kstrtoint(buf, 0, &mode);
 310         if (ret)
 311                 return ret;
 312
 313         ret = dev_drv->ops->set_dsp_cabc(dev_drv, mode);
 314         if(ret < 0)
 315                 return ret;
 316
 317         return count;
 318
 319
 320 }
 321
 322 static ssize_t show_hue(struct device *dev,
 323                             struct device_attribute *attr, char *buf)
 324 {
 325
 326         return 0;
 327 }
 328
 329 static ssize_t set_hue(struct device *dev, struct device_attribute *attr,
 330                            const char *buf, size_t count)
 331 {
 332         struct fb_info *fbi = dev_get_drvdata(dev);
 333         struct rk_lcdc_driver *dev_drv =
 334             (struct rk_lcdc_driver *)fbi->par;
 335         int ret,hue;
 336
 337         ret = kstrtoint(buf, 0, &hue);
 338         if (ret)
 339                 return ret;
 340
 341         ret = dev_drv->ops->set_dsp_hue(dev_drv, hue);
 342         if(ret < 0)
 343                 return ret;
 344
 345         return count;
 346 }
 347
 348 static ssize_t show_dsp_bcs(struct device *dev,
 349                             struct device_attribute *attr, char *buf)
 350 {
 351
 352         return 0;
 353 }
 354
 355 static ssize_t set_dsp_bcs(struct device *dev, struct device_attribute *attr,
 356                            const char *buf, size_t count)
 357 {
 358         struct fb_info *fbi = dev_get_drvdata(dev);
 359         struct rk_lcdc_driver *dev_drv =
 360             (struct rk_lcdc_driver *)fbi->par;
 361         int ret,bri,con,sat;
 362
 363         ret = kstrtoint(buf, 0, &bri);
 364         if (ret)
 365                 return ret;
 366
 367         ret = dev_drv->ops->set_dsp_bcsh_bcs(dev_drv, bri,con,sat);
 368         if(ret < 0)
 369                 return ret;
 370
 371         return count;
 372 }
 373
 374 static struct device_attribute rkfb_attrs[] = {
 375         __ATTR(phys_addr, S_IRUGO, show_phys, NULL),
 376         __ATTR(virt_addr, S_IRUGO, show_virt, NULL),
 377         __ATTR(disp_info, S_IRUGO, show_disp_info, NULL),
 378         __ATTR(screen_info, S_IRUGO, show_screen_info, NULL),
 379         __ATTR(dual_mode, S_IRUGO, show_dual_mode, NULL),
 380         __ATTR(enable, S_IRUGO | S_IWUSR, show_fb_state, set_fb_state),
 381         __ATTR(overlay, S_IRUGO | S_IWUSR, show_overlay, set_overlay),
 382         __ATTR(fps, S_IRUGO | S_IWUSR, show_fps, set_fps),
 383         __ATTR(map, S_IRUGO | S_IWUSR, show_fb_win_map, set_fb_win_map),
 384         __ATTR(dsp_lut, S_IRUGO | S_IWUSR, show_dsp_lut, set_dsp_lut),
 385         __ATTR(cabc, S_IRUGO | S_IWUSR, show_dsp_cabc, set_dsp_cabc),
 386         __ATTR(hue, S_IRUGO | S_IWUSR, show_hue, set_hue),
 387         __ATTR(bcs, S_IRUGO | S_IWUSR, show_dsp_bcs, set_dsp_bcs),
 388 };
 389
 390 int rkfb_create_sysfs(struct fb_info *fbi)
 391 {
 392         int r;
 393         int t;
 394         for (t = 0; t < ARRAY_SIZE(rkfb_attrs); t++) {
 395                 r = device_create_file(fbi->dev, &rkfb_attrs[t]);
 396                 if (r) {
 397                         dev_err(fbi->dev, "failed to create sysfs " "file\n");
 398                         return r;
 399                 }
 400         }
 401
 402         return 0;
 403 }
 404
 405 void rkfb_remove_sysfs(struct rk_fb *rk_fb)
 406 {
 407         int i, t;
 408
 409         for (i = 0; i < rk_fb->num_fb; i++) {
 410                 for (t = 0; t < ARRAY_SIZE(rkfb_attrs); t++)
 411                         device_remove_file(rk_fb->fb[i]->dev, &rkfb_attrs[t]);
 412         }
 413 }