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 #include <video/of_display_timing.h>
  23 #include <video/of_videomode.h>
  24 #include <video/videomode.h>
  25
  26 #include "mxc_dispdrv.h"
  27
  28 struct mxc_lcd_platform_data {
  29         u32 default_ifmt;
  30         u32 ipu_id;
  31         u32 disp_id;
  32         enum display_flags disp_flags;
  33 };
  34
  35 struct mxc_lcdif_data {
  36         struct device *dev;
  37         struct mxc_dispdrv_handle *disp_lcdif;
  38 };
  39
  40 #define DISPDRV_LCD     "lcd"
  41
  42 static struct fb_videomode lcdif_modedb[] = {
  43         {
  44                 /* 800x480 @ 57 Hz , pixel clk @ 27MHz */
  45                 "CLAA-WVGA", 57, 800, 480, 37037, 40, 60, 10, 10, 20, 10,
  46                 FB_SYNC_CLK_LAT_FALL,
  47                 FB_VMODE_NONINTERLACED,
  48                 0,
  49         },
  50         {
  51                 /* 800x480 @ 60 Hz , pixel clk @ 32MHz */
  52                 "SEIKO-WVGA", 60, 800, 480, 29850, 89, 164, 23, 10, 10, 10,
  53                 FB_SYNC_CLK_LAT_FALL,
  54                 FB_VMODE_NONINTERLACED,
  55                 0,
  56         },
  57         {
  58                 .name = "VGA",
  59                 .pixclock = KHZ2PICOS(25200),
  60                 .xres = 640,
  61                 .yres = 480,
  62                 .left_margin = 48,
  63                 .hsync_len = 96,
  64                 .right_margin = 16,
  65                 .upper_margin = 31,
  66                 .vsync_len = 2,
  67                 .lower_margin = 12,
  68         },
  69         {
  70                 .name = "ETV570",
  71                 .pixclock = KHZ2PICOS(25200),
  72                 .xres = 640,
  73                 .yres = 480,
  74                 .left_margin = 114,
  75                 .hsync_len = 30,
  76                 .right_margin = 16,
  77                 .upper_margin = 32,
  78                 .vsync_len = 3,
  79                 .lower_margin = 10,
  80         },
  81         {
  82                 .name = "ET0350",
  83                 .pixclock = KHZ2PICOS(6413760 / 1000),
  84                 .xres = 320,
  85                 .yres = 240,
  86                 .left_margin = 34,
  87                 .hsync_len = 34,
  88                 .right_margin = 20,
  89                 .upper_margin = 15,
  90                 .vsync_len = 3,
  91                 .lower_margin = 4,
  92         },
  93         {
  94                 .name = "ET0430",
  95                 .pixclock = KHZ2PICOS(9009),
  96                 .xres = 480,
  97                 .yres = 272,
  98                 .left_margin = 2,
  99                 .hsync_len = 41,
 100                 .right_margin = 2,
 101                 .upper_margin = 2,
 102                 .vsync_len = 10,
 103                 .lower_margin = 2,
 104                 .sync = FB_SYNC_CLK_LAT_FALL,
 105         },
 106         {
 107                 .name = "ET0500",
 108                 .pixclock = KHZ2PICOS(33264),
 109                 .xres = 800,
 110                 .yres = 480,
 111                 .left_margin = 88,
 112                 .hsync_len = 128,
 113                 .right_margin = 40,
 114                 .upper_margin = 33,
 115                 .vsync_len = 2,
 116                 .lower_margin = 10,
 117         },
 118         {
 119                 .name = "ET0700", /* same as ET0500 */
 120                 .pixclock = KHZ2PICOS(33264),
 121                 .xres = 800,
 122                 .yres = 480,
 123                 .left_margin = 88,
 124                 .hsync_len = 128,
 125                 .right_margin = 40,
 126                 .upper_margin = 33,
 127                 .vsync_len = 2,
 128                 .lower_margin = 10,
 129         },
 130         {
 131                 .name = "ETQ570",
 132                 .pixclock = KHZ2PICOS(6596040 / 1000),
 133                 .xres = 320,
 134                 .yres = 240,
 135                 .left_margin = 38,
 136                 .hsync_len = 30,
 137                 .right_margin = 30,
 138                 .upper_margin = 16,
 139                 .vsync_len = 3,
 140                 .lower_margin = 4,
 141         },
 142 };
 143 static int lcdif_modedb_sz = ARRAY_SIZE(lcdif_modedb);
 144
 145 static int lcdif_init(struct mxc_dispdrv_handle *disp,
 146         struct mxc_dispdrv_setting *setting)
 147 {
 148         int ret, i;
 149         struct mxc_lcdif_data *lcdif = mxc_dispdrv_getdata(disp);
 150         struct mxc_lcd_platform_data *plat_data = lcdif->dev->platform_data;
 151         struct fb_videomode *modedb = lcdif_modedb;
 152         int modedb_sz = lcdif_modedb_sz;
 153
 154         /* use platform defined ipu/di */
 155         setting->dev_id = plat_data->ipu_id;
 156         setting->disp_id = plat_data->disp_id;
 157         setting->disp_flags = plat_data->disp_flags;
 158
 159 printk(KERN_DEBUG "%s: disp_flags=%08x\n", __func__, setting->disp_flags);
 160         ret = fb_find_mode(&setting->fbi->var, setting->fbi, setting->dft_mode_str,
 161                                 modedb, modedb_sz, NULL, setting->default_bpp);
 162         if (!ret) {
 163                 fb_videomode_to_var(&setting->fbi->var, &modedb[0]);
 164                 setting->if_fmt = plat_data->default_ifmt;
 165         }
 166
 167         INIT_LIST_HEAD(&setting->fbi->modelist);
 168         for (i = 0; i < modedb_sz; i++) {
 169                 struct fb_videomode m;
 170                 fb_var_to_videomode(&m, &setting->fbi->var);
 171                 if (fb_mode_is_equal(&m, &modedb[i])) {
 172                         fb_add_videomode(&modedb[i],
 173                                         &setting->fbi->modelist);
 174                         break;
 175                 }
 176         }
 177
 178         return ret;
 179 }
 180
 181 void lcdif_deinit(struct mxc_dispdrv_handle *disp)
 182 {
 183         /*TODO*/
 184 }
 185
 186 static struct mxc_dispdrv_driver lcdif_drv = {
 187         .name   = DISPDRV_LCD,
 188         .init   = lcdif_init,
 189         .deinit = lcdif_deinit,
 190 };
 191
 192 static int lcd_get_of_property(struct device *dev,
 193                                 struct mxc_lcd_platform_data *plat_data)
 194 {
 195         struct device_node *np = dev->of_node;
 196         int err;
 197         u32 ipu_id, disp_id;
 198         const char *default_ifmt;
 199
 200         err = of_property_read_string(np, "default_ifmt", &default_ifmt);
 201         if (err) {
 202                 dev_err(dev, "get of property default_ifmt fail\n");
 203                 return err;
 204         }
 205         err = of_property_read_u32(np, "ipu_id", &ipu_id);
 206         if (err) {
 207                 dev_err(dev, "get of property ipu_id fail\n");
 208                 return err;
 209         }
 210         err = of_property_read_u32(np, "disp_id", &disp_id);
 211         if (err) {
 212                 dev_err(dev, "get of property disp_id fail\n");
 213                 return err;
 214         }
 215
 216         {
 217                 struct videomode vm = { };
 218
 219                 err = of_get_videomode(np, &vm, OF_USE_NATIVE_MODE);
 220                 if (err == 0) {
 221                         dev_dbg(dev, "Copying videomode from display-timings\n");
 222                         fb_videomode_from_videomode(&vm, &lcdif_modedb[0]);
 223                         plat_data->disp_flags = vm.flags;
 224                         lcdif_modedb_sz = 1;
 225                 }
 226         }
 227
 228         plat_data->ipu_id = ipu_id;
 229         plat_data->disp_id = disp_id;
 230         if (!strncmp(default_ifmt, "RGB24", 5))
 231                 plat_data->default_ifmt = IPU_PIX_FMT_RGB24;
 232         else if (!strncmp(default_ifmt, "BGR24", 5))
 233                 plat_data->default_ifmt = IPU_PIX_FMT_BGR24;
 234         else if (!strncmp(default_ifmt, "GBR24", 5))
 235                 plat_data->default_ifmt = IPU_PIX_FMT_GBR24;
 236         else if (!strncmp(default_ifmt, "RGB565", 6))
 237                 plat_data->default_ifmt = IPU_PIX_FMT_RGB565;
 238         else if (!strncmp(default_ifmt, "RGB666", 6))
 239                 plat_data->default_ifmt = IPU_PIX_FMT_RGB666;
 240         else if (!strncmp(default_ifmt, "YUV444", 6))
 241                 plat_data->default_ifmt = IPU_PIX_FMT_YUV444;
 242         else if (!strncmp(default_ifmt, "LVDS666", 7))
 243                 plat_data->default_ifmt = IPU_PIX_FMT_LVDS666;
 244         else if (!strncmp(default_ifmt, "YUYV16", 6))
 245                 plat_data->default_ifmt = IPU_PIX_FMT_YUYV;
 246         else if (!strncmp(default_ifmt, "UYVY16", 6))
 247                 plat_data->default_ifmt = IPU_PIX_FMT_UYVY;
 248         else if (!strncmp(default_ifmt, "YVYU16", 6))
 249                 plat_data->default_ifmt = IPU_PIX_FMT_YVYU;
 250         else if (!strncmp(default_ifmt, "VYUY16", 6))
 251                                 plat_data->default_ifmt = IPU_PIX_FMT_VYUY;
 252         else {
 253                 dev_err(dev, "err default_ifmt!\n");
 254                 return -ENOENT;
 255         }
 256
 257         return err;
 258 }
 259
 260 static int mxc_lcdif_probe(struct platform_device *pdev)
 261 {
 262         int ret;
 263         struct pinctrl *pinctrl;
 264         struct mxc_lcdif_data *lcdif;
 265         struct mxc_lcd_platform_data *plat_data;
 266
 267         dev_dbg(&pdev->dev, "%s enter\n", __func__);
 268         lcdif = devm_kzalloc(&pdev->dev, sizeof(struct mxc_lcdif_data),
 269                                 GFP_KERNEL);
 270         if (!lcdif)
 271                 return -ENOMEM;
 272         plat_data = devm_kzalloc(&pdev->dev,
 273                                 sizeof(struct mxc_lcd_platform_data),
 274                                 GFP_KERNEL);
 275         if (!plat_data)
 276                 return -ENOMEM;
 277         pdev->dev.platform_data = plat_data;
 278
 279         ret = lcd_get_of_property(&pdev->dev, plat_data);
 280         if (ret < 0) {
 281                 dev_err(&pdev->dev, "get lcd of property fail\n");
 282                 return ret;
 283         }
 284
 285         pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
 286         if (IS_ERR(pinctrl)) {
 287                 dev_err(&pdev->dev, "can't get/select pinctrl\n");
 288                 return PTR_ERR(pinctrl);
 289         }
 290
 291         lcdif->dev = &pdev->dev;
 292         lcdif->disp_lcdif = mxc_dispdrv_register(&lcdif_drv);
 293         mxc_dispdrv_setdata(lcdif->disp_lcdif, lcdif);
 294
 295         dev_set_drvdata(&pdev->dev, lcdif);
 296         dev_dbg(&pdev->dev, "%s exit\n", __func__);
 297
 298         return ret;
 299 }
 300
 301 static int mxc_lcdif_remove(struct platform_device *pdev)
 302 {
 303         struct mxc_lcdif_data *lcdif = platform_get_drvdata(pdev);
 304
 305         mxc_dispdrv_puthandle(lcdif->disp_lcdif);
 306         mxc_dispdrv_unregister(lcdif->disp_lcdif);
 307         kfree(lcdif);
 308         return 0;
 309 }
 310
 311 static const struct of_device_id imx_lcd_dt_ids[] = {
 312         { .compatible = "fsl,lcd"},
 313         { /* sentinel */ }
 314 };
 315 static struct platform_driver mxc_lcdif_driver = {
 316         .driver = {
 317                 .name = "mxc_lcdif",
 318                 .of_match_table = imx_lcd_dt_ids,
 319         },
 320         .probe = mxc_lcdif_probe,
 321         .remove = mxc_lcdif_remove,
 322 };
 323
 324 static int __init mxc_lcdif_init(void)
 325 {
 326         return platform_driver_register(&mxc_lcdif_driver);
 327 }
 328
 329 static void __exit mxc_lcdif_exit(void)
 330 {
 331         platform_driver_unregister(&mxc_lcdif_driver);
 332 }
 333
 334 module_init(mxc_lcdif_init);
 335 module_exit(mxc_lcdif_exit);
 336
 337 MODULE_AUTHOR("Freescale Semiconductor, Inc.");
 338 MODULE_DESCRIPTION("i.MX ipuv3 LCD extern port driver");
 339 MODULE_LICENSE("GPL");