board/freescale/mx51evk/mx51evk_video.c

   1 /*
   2  * Copyright (C) 2012 Freescale Semiconductor, Inc.
   3  * Fabio Estevam <fabio.estevam@freescale.com>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <linux/list.h>
  26 #include <asm/gpio.h>
  27 #include <asm/arch/iomux-mx51.h>
  28 #include <linux/fb.h>
  29 #include <ipu_pixfmt.h>
  30
  31 #define MX51EVK_LCD_3V3         IMX_GPIO_NR(4, 9)
  32 #define MX51EVK_LCD_5V          IMX_GPIO_NR(4, 10)
  33 #define MX51EVK_LCD_BACKLIGHT   IMX_GPIO_NR(3, 4)
  34
  35 static struct fb_videomode const claa_wvga = {
  36         .name           = "CLAA07LC0ACW",
  37         .refresh        = 57,
  38         .xres           = 800,
  39         .yres           = 480,
  40         .pixclock       = 37037,
  41         .left_margin    = 40,
  42         .right_margin   = 60,
  43         .upper_margin   = 10,
  44         .lower_margin   = 10,
  45         .hsync_len      = 20,
  46         .vsync_len      = 10,
  47         .sync           = 0,
  48         .vmode          = FB_VMODE_NONINTERLACED
  49 };
  50
  51 static struct fb_videomode const dvi = {
  52         .name           = "DVI panel",
  53         .refresh        = 60,
  54         .xres           = 1024,
  55         .yres           = 768,
  56         .pixclock       = 15385,
  57         .left_margin    = 220,
  58         .right_margin   = 40,
  59         .upper_margin   = 21,
  60         .lower_margin   = 7,
  61         .hsync_len      = 60,
  62         .vsync_len      = 10,
  63         .sync           = 0,
  64         .vmode          = FB_VMODE_NONINTERLACED
  65 };
  66
  67 void setup_iomux_lcd(void)
  68 {
  69         /* DI2_PIN15 */
  70         imx_iomux_v3_setup_pad(MX51_PAD_DI_GP4__DI2_PIN15);
  71
  72         /* Pad settings for DI2_DISP_CLK */
  73         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI2_DISP_CLK__DI2_DISP_CLK,
  74                             PAD_CTL_PKE | PAD_CTL_DSE_MAX | PAD_CTL_SRE_SLOW));
  75
  76         /* Turn on 3.3V voltage for LCD */
  77         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D12__GPIO4_9,
  78                                                 NO_PAD_CTRL));
  79         gpio_direction_output(MX51EVK_LCD_3V3, 1);
  80
  81         /* Turn on 5V voltage for LCD */
  82         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_CSI2_D13__GPIO4_10,
  83                                                 NO_PAD_CTRL));
  84         gpio_direction_output(MX51EVK_LCD_5V, 1);
  85
  86         /* Turn on GPIO backlight */
  87         imx_iomux_v3_setup_pad(NEW_PAD_CTRL(MX51_PAD_DI1_D1_CS__GPIO3_4,
  88                                                 NO_PAD_CTRL));
  89         gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1);
  90 }
  91
  92 int board_video_skip(void)
  93 {
  94         int ret;
  95         char const *e = getenv("panel");
  96
  97         if (e) {
  98                 if (strcmp(e, "claa") == 0) {
  99                         ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565);
 100                         if (ret)
 101                                 printf("claa cannot be configured: %d\n", ret);
 102                         return ret;
 103                 }
 104         }
 105
 106         /*
 107          * 'panel' env variable not found or has different value than 'claa'
 108          *  Defaulting to dvi output.
 109          */
 110         ret = ipuv3_fb_init(&dvi, 0, IPU_PIX_FMT_RGB24);
 111         if (ret)
 112                 printf("dvi cannot be configured: %d\n", ret);
 113         return ret;
 114 }