drivers/video/mxc/mxc_lcdif.c

   1 /*
   2  * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
   3  */
   4
   5 /*
   6  * The code contained herein is licensed under the GNU General Public
   7  * License. You may obtain a copy of the GNU General Public License
   8  * Version 2 or later at the following locations:
   9  *
  10  * http://www.opensource.org/licenses/gpl-license.html
  11  * http://www.gnu.org/copyleft/gpl.html
  12  */
  13
  14 #include <linux/init.h>
  15 #include <linux/ipu.h>
  16 #include <linux/kernel.h>
  17 #include <linux/module.h>
  18 #include <linux/mxcfb.h>
  19 #include <linux/of_device.h>
  20 #include <linux/pinctrl/consumer.h>
  21 #include <linux/platform_device.h>
  22
  23 #include "mxc_dispdrv.h"
  24
  25 struct mxc_lcd_platform_data {
  26         u32 default_ifmt;
  27         u32 ipu_id;
  28         u32 disp_id;
  29 };
  30
  31 struct mxc_lcdif_data {
  32         struct device *dev;
  33         struct mxc_dispdrv_handle *disp_lcdif;
  34 };
  35
  36 #define DISPDRV_LCD     "lcd"
  37
  38 static struct fb_videomode lcdif_modedb[] = {
  39         {
  40                 /* 800x480 @ 57 Hz , pixel clk @ 27MHz */
  41                 "CLAA-WVGA", 57, 800, 480, 37037, 40, 60, 10, 10, 20, 10,
  42                 FB_SYNC_CLK_LAT_FALL,
  43                 FB_VMODE_NONINTERLACED,
  44                 0,
  45         },
  46         {
  47                 /* 800x480 @ 60 Hz , pixel clk @ 32MHz */
  48                 "SEIKO-WVGA", 60, 800, 480, 29850, 89, 164, 23, 10, 10, 10,
  49                 FB_SYNC_CLK_LAT_FALL,
  50                 FB_VMODE_NONINTERLACED,
  51                 0,
  52         },
  53         {
  54                 .name = "VGA",
  55                 .pixclock = KHZ2PICOS(25200),
  56                 .xres = 640,
  57                 .yres = 480,
  58                 .left_margin = 48,
  59                 .hsync_len = 96,
  60                 .right_margin = 16,
  61                 .upper_margin = 31,
  62                 .vsync_len = 2,
  63                 .lower_margin = 12,
  64         },
  65         {
  66                 .name = "ETV570",
  67                 .pixclock = KHZ2PICOS(25200),
  68                 .xres = 640,
  69                 .yres = 480,
  70                 .left_margin = 114,
  71                 .hsync_len = 30,
  72                 .right_margin = 16,
  73                 .upper_margin = 32,
  74                 .vsync_len = 3,
  75                 .lower_margin = 10,
  76         },
  77         {
  78                 .name = "ET0350",
  79                 .pixclock = KHZ2PICOS(6413760 / 1000),
  80                 .xres = 320,
  81                 .yres = 240,
  82                 .left_margin = 34,
  83                 .hsync_len = 34,
  84                 .right_margin = 20,
  85                 .upper_margin = 15,
  86                 .vsync_len = 3,
  87                 .lower_margin = 4,
  88         },
  89         {
  90                 .name = "ET0430",
  91                 .pixclock = KHZ2PICOS(9009),
  92                 .xres = 480,
  93                 .yres = 272,
  94                 .left_margin = 2,
  95                 .hsync_len = 41,
  96                 .right_margin = 2,
  97                 .upper_margin = 2,
  98                 .vsync_len = 10,
  99                 .lower_margin = 2,
 100                 .sync = FB_SYNC_CLK_LAT_FALL,
 101         },
 102         {
 103                 .name = "ET0500",
 104                 .pixclock = KHZ2PICOS(33264),
 105                 .xres = 800,
 106                 .yres = 480,
 107                 .left_margin = 88,
 108                 .hsync_len = 128,
 109                 .right_margin = 40,
 110                 .upper_margin = 33,
 111                 .vsync_len = 2,
 112                 .lower_margin = 10,
 113         },
 114         {
 115                 .name = "ET0700", /* same as ET0500 */
 116                 .pixclock = KHZ2PICOS(33264),
 117                 .xres = 800,
 118                 .yres = 480,
 119                 .left_margin = 88,
 120                 .hsync_len = 128,
 121                 .right_margin = 40,
 122                 .upper_margin = 33,
 123                 .vsync_len = 2,
 124                 .lower_margin = 10,
 125         },
 126         {
 127                 .name = "ETQ570",
 128                 .pixclock = KHZ2PICOS(6596040 / 1000),
 129                 .xres = 320,
 130                 .yres = 240,
 131                 .left_margin = 38,
 132                 .hsync_len = 30,
 133                 .right_margin = 30,
 134                 .upper_margin = 16,
 135                 .vsync_len = 3,
 136                 .lower_margin = 4,
 137         },
 138 };
 139 static int lcdif_modedb_sz = ARRAY_SIZE(lcdif_modedb);
 140
 141 static int lcdif_init(struct mxc_dispdrv_handle *disp,
 142         struct mxc_dispdrv_setting *setting)
 143 {
 144         int ret, i;
 145         struct mxc_lcdif_data *lcdif = mxc_dispdrv_getdata(disp);
 146         struct mxc_lcd_platform_data *plat_data = lcdif->dev->platform_data;
 147         struct fb_videomode *modedb = lcdif_modedb;
 148         int modedb_sz = lcdif_modedb_sz;
 149
 150         /* use platform defined ipu/di */
 151         setting->dev_id = plat_data->ipu_id;
 152         setting->disp_id = plat_data->disp_id;
 153
 154         ret = fb_find_mode(&setting->fbi->var, setting->fbi, setting->dft_mode_str,
 155                                 modedb, modedb_sz, NULL, setting->default_bpp);
 156         if (!ret) {
 157                 fb_videomode_to_var(&setting->fbi->var, &modedb[0]);
 158                 setting->if_fmt = plat_data->default_ifmt;
 159         }
 160
 161         INIT_LIST_HEAD(&setting->fbi->modelist);
 162         for (i = 0; i < modedb_sz; i++) {
 163                 struct fb_videomode m;
 164                 fb_var_to_videomode(&m, &setting->fbi->var);
 165                 if (fb_mode_is_equal(&m, &modedb[i])) {
 166                         fb_add_videomode(&modedb[i],
 167                                         &setting->fbi->modelist);
 168                         break;
 169                 }
 170         }
 171
 172         return ret;
 173 }
 174
 175 void lcdif_deinit(struct mxc_dispdrv_handle *disp)
 176 {
 177         /*TODO*/
 178 }
 179
 180 static struct mxc_dispdrv_driver lcdif_drv = {
 181         .name   = DISPDRV_LCD,
 182         .init   = lcdif_init,
 183         .deinit = lcdif_deinit,
 184 };
 185
 186 static int lcd_get_of_property(struct device *dev,
 187                                 struct mxc_lcd_platform_data *plat_data)
 188 {
 189         struct device_node *np = dev->of_node;
 190         int err;
 191         u32 ipu_id, disp_id;
 192         const char *default_ifmt;
 193
 194         err = of_property_read_string(np, "default_ifmt", &default_ifmt);
 195         if (err) {
 196                 dev_err(dev, "get of property default_ifmt fail\n");
 197                 return err;
 198         }
 199         err = of_property_read_u32(np, "ipu_id", &ipu_id);
 200         if (err) {
 201                 dev_err(dev, "get of property ipu_id fail\n");
 202                 return err;
 203         }
 204         err = of_property_read_u32(np, "disp_id", &disp_id);
 205         if (err) {
 206                 dev_err(dev, "get of property disp_id fail\n");
 207                 return err;
 208         }
 209
 210         plat_data->ipu_id = ipu_id;
 211         plat_data->disp_id = disp_id;
 212         if (!strncmp(default_ifmt, "RGB24", 5))
 213                 plat_data->default_ifmt = IPU_PIX_FMT_RGB24;
 214         else if (!strncmp(default_ifmt, "BGR24", 5))
 215                 plat_data->default_ifmt = IPU_PIX_FMT_BGR24;
 216         else if (!strncmp(default_ifmt, "GBR24", 5))
 217                 plat_data->default_ifmt = IPU_PIX_FMT_GBR24;
 218         else if (!strncmp(default_ifmt, "RGB565", 6))
 219                 plat_data->default_ifmt = IPU_PIX_FMT_RGB565;
 220         else if (!strncmp(default_ifmt, "RGB666", 6))
 221                 plat_data->default_ifmt = IPU_PIX_FMT_RGB666;
 222         else if (!strncmp(default_ifmt, "YUV444", 6))
 223                 plat_data->default_ifmt = IPU_PIX_FMT_YUV444;
 224         else if (!strncmp(default_ifmt, "LVDS666", 7))
 225                 plat_data->default_ifmt = IPU_PIX_FMT_LVDS666;
 226         else if (!strncmp(default_ifmt, "YUYV16", 6))
 227                 plat_data->default_ifmt = IPU_PIX_FMT_YUYV;
 228         else if (!strncmp(default_ifmt, "UYVY16", 6))
 229                 plat_data->default_ifmt = IPU_PIX_FMT_UYVY;
 230         else if (!strncmp(default_ifmt, "YVYU16", 6))
 231                 plat_data->default_ifmt = IPU_PIX_FMT_YVYU;
 232         else if (!strncmp(default_ifmt, "VYUY16", 6))
 233                                 plat_data->default_ifmt = IPU_PIX_FMT_VYUY;
 234         else {
 235                 dev_err(dev, "err default_ifmt!\n");
 236                 return -ENOENT;
 237         }
 238
 239         return err;
 240 }
 241
 242 static int mxc_lcdif_probe(struct platform_device *pdev)
 243 {
 244         int ret;
 245         struct pinctrl *pinctrl;
 246         struct mxc_lcdif_data *lcdif;
 247         struct mxc_lcd_platform_data *plat_data;
 248
 249         dev_dbg(&pdev->dev, "%s enter\n", __func__);
 250         lcdif = devm_kzalloc(&pdev->dev, sizeof(struct mxc_lcdif_data),
 251                                 GFP_KERNEL);
 252         if (!lcdif)
 253                 return -ENOMEM;
 254         plat_data = devm_kzalloc(&pdev->dev,
 255                                 sizeof(struct mxc_lcd_platform_data),
 256                                 GFP_KERNEL);
 257         if (!plat_data)
 258                 return -ENOMEM;
 259         pdev->dev.platform_data = plat_data;
 260
 261         ret = lcd_get_of_property(&pdev->dev, plat_data);
 262         if (ret < 0) {
 263                 dev_err(&pdev->dev, "get lcd of property fail\n");
 264                 return ret;
 265         }
 266
 267         pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
 268         if (IS_ERR(pinctrl)) {
 269                 dev_err(&pdev->dev, "can't get/select pinctrl\n");
 270                 return PTR_ERR(pinctrl);
 271         }
 272
 273         lcdif->dev = &pdev->dev;
 274         lcdif->disp_lcdif = mxc_dispdrv_register(&lcdif_drv);
 275         mxc_dispdrv_setdata(lcdif->disp_lcdif, lcdif);
 276
 277         dev_set_drvdata(&pdev->dev, lcdif);
 278         dev_dbg(&pdev->dev, "%s exit\n", __func__);
 279
 280         return ret;
 281 }
 282
 283 static int mxc_lcdif_remove(struct platform_device *pdev)
 284 {
 285         struct mxc_lcdif_data *lcdif = platform_get_drvdata(pdev);
 286
 287         mxc_dispdrv_puthandle(lcdif->disp_lcdif);
 288         mxc_dispdrv_unregister(lcdif->disp_lcdif);
 289         kfree(lcdif);
 290         return 0;
 291 }
 292
 293 static const struct of_device_id imx_lcd_dt_ids[] = {
 294         { .compatible = "fsl,lcd"},
 295         { /* sentinel */ }
 296 };
 297 static struct platform_driver mxc_lcdif_driver = {
 298         .driver = {
 299                 .name = "mxc_lcdif",
 300                 .of_match_table = imx_lcd_dt_ids,
 301         },
 302         .probe = mxc_lcdif_probe,
 303         .remove = mxc_lcdif_remove,
 304 };
 305
 306 static int __init mxc_lcdif_init(void)
 307 {
 308         return platform_driver_register(&mxc_lcdif_driver);
 309 }
 310
 311 static void __exit mxc_lcdif_exit(void)
 312 {
 313         platform_driver_unregister(&mxc_lcdif_driver);
 314 }
 315
 316 module_init(mxc_lcdif_init);
 317 module_exit(mxc_lcdif_exit);
 318
 319 MODULE_AUTHOR("Freescale Semiconductor, Inc.");
 320 MODULE_DESCRIPTION("i.MX ipuv3 LCD extern port driver");
 321 MODULE_LICENSE("GPL");