board/ge/mx53ppd/mx53ppd_video.c

   1 /*
   2  * Copyright 2017 General Electric Company
   3  *
   4  * Based on board/freescale/mx53loco/mx53loco_video.c:
   5  *
   6  * Copyright (C) 2012 Freescale Semiconductor, Inc.
   7  * Fabio Estevam <fabio.estevam@freescale.com>
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include <common.h>
  13 #include <linux/list.h>
  14 #include <asm/gpio.h>
  15 #include <asm/arch/iomux-mx53.h>
  16 #include <linux/fb.h>
  17 #include <ipu_pixfmt.h>
  18 #include <asm/arch/crm_regs.h>
  19 #include <asm/arch/imx-regs.h>
  20 #include <asm/io.h>
  21 #include <pwm.h>
  22 #include "ppd_gpio.h"
  23
  24 #define MX53PPD_LCD_POWER               IMX_GPIO_NR(3, 24)
  25
  26 static struct fb_videomode const nv_spwg = {
  27         .name           = "NV-SPWGRGB888",
  28         .refresh        = 60,
  29         .xres           = 800,
  30         .yres           = 480,
  31         .pixclock       = 15384,
  32         .left_margin    = 16,
  33         .right_margin   = 210,
  34         .upper_margin   = 10,
  35         .lower_margin   = 22,
  36         .hsync_len      = 30,
  37         .vsync_len      = 13,
  38         .sync           = FB_SYNC_EXT,
  39         .vmode          = FB_VMODE_NONINTERLACED
  40 };
  41
  42 void setup_iomux_lcd(void)
  43 {
  44         static const iomux_v3_cfg_t lcd_pads[] = {
  45                 MX53_PAD_DI0_DISP_CLK__IPU_DI0_DISP_CLK,
  46                 MX53_PAD_DI0_PIN15__IPU_DI0_PIN15,
  47                 MX53_PAD_DI0_PIN2__IPU_DI0_PIN2,
  48                 MX53_PAD_DI0_PIN3__IPU_DI0_PIN3,
  49                 MX53_PAD_DISP0_DAT0__IPU_DISP0_DAT_0,
  50                 MX53_PAD_DISP0_DAT1__IPU_DISP0_DAT_1,
  51                 MX53_PAD_DISP0_DAT2__IPU_DISP0_DAT_2,
  52                 MX53_PAD_DISP0_DAT3__IPU_DISP0_DAT_3,
  53                 MX53_PAD_DISP0_DAT4__IPU_DISP0_DAT_4,
  54                 MX53_PAD_DISP0_DAT5__IPU_DISP0_DAT_5,
  55                 MX53_PAD_DISP0_DAT6__IPU_DISP0_DAT_6,
  56                 MX53_PAD_DISP0_DAT7__IPU_DISP0_DAT_7,
  57                 MX53_PAD_DISP0_DAT8__IPU_DISP0_DAT_8,
  58                 MX53_PAD_DISP0_DAT9__IPU_DISP0_DAT_9,
  59                 MX53_PAD_DISP0_DAT10__IPU_DISP0_DAT_10,
  60                 MX53_PAD_DISP0_DAT11__IPU_DISP0_DAT_11,
  61                 MX53_PAD_DISP0_DAT12__IPU_DISP0_DAT_12,
  62                 MX53_PAD_DISP0_DAT13__IPU_DISP0_DAT_13,
  63                 MX53_PAD_DISP0_DAT14__IPU_DISP0_DAT_14,
  64                 MX53_PAD_DISP0_DAT15__IPU_DISP0_DAT_15,
  65                 MX53_PAD_DISP0_DAT16__IPU_DISP0_DAT_16,
  66                 MX53_PAD_DISP0_DAT17__IPU_DISP0_DAT_17,
  67                 MX53_PAD_DISP0_DAT18__IPU_DISP0_DAT_18,
  68                 MX53_PAD_DISP0_DAT19__IPU_DISP0_DAT_19,
  69                 MX53_PAD_DISP0_DAT20__IPU_DISP0_DAT_20,
  70                 MX53_PAD_DISP0_DAT21__IPU_DISP0_DAT_21,
  71                 MX53_PAD_DISP0_DAT22__IPU_DISP0_DAT_22,
  72                 MX53_PAD_DISP0_DAT23__IPU_DISP0_DAT_23,
  73         };
  74
  75         imx_iomux_v3_setup_multiple_pads(lcd_pads, ARRAY_SIZE(lcd_pads));
  76 }
  77
  78 static void lcd_enable(void)
  79 {
  80         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
  81         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
  82
  83         /* Set LDB_DI0 as clock source for IPU_DI0 */
  84         clrsetbits_le32(&mxc_ccm->cscmr2,
  85                         MXC_CCM_CSCMR2_DI0_CLK_SEL_MASK,
  86                         MXC_CCM_CSCMR2_DI0_CLK_SEL(
  87                                 MXC_CCM_CSCMR2_DI0_CLK_SEL_LDB_DI0_CLK));
  88
  89         /* Turn on IPU LDB DI0 clocks */
  90         setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_LDB_DI0(3));
  91
  92         /* Turn on IPU DI0 clocks */
  93         setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_IPU_DI0(3));
  94
  95         /* Configure LDB */
  96         writel(IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
  97                 IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
  98                 IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
  99                 &iomux->gpr[2]);
 100
 101         /* Enable backlights  */
 102         pwm_init(1, 0, 0);
 103
 104         /* duty cycle 5000000ns, period: 5000000ns */
 105         pwm_config(1, 5000000, 5000000);
 106
 107         /* Backlight Power */
 108         gpio_direction_output(BACKLIGHT_ENABLE, 1);
 109
 110         pwm_enable(1);
 111 }
 112
 113 static int do_lcd_enable(cmd_tbl_t *cmdtp, int flag, int argc,
 114                          char * const argv[])
 115 {
 116         lcd_enable();
 117         return 0;
 118 }
 119
 120 U_BOOT_CMD(
 121         ppd_lcd_enable, 1,      1,      do_lcd_enable,
 122         "enable PPD LCD",
 123         "no parameters"
 124 );
 125
 126 int board_video_skip(void)
 127 {
 128         int ret;
 129
 130         ret = ipuv3_fb_init(&nv_spwg, 0, IPU_PIX_FMT_RGB24);
 131         if (ret)
 132                 printf("Display cannot be configured: %d\n", ret);
 133
 134         return ret;
 135 }