LXR uboot/board/ge/mx53ppd/mx53ppd

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2017 General Electric Company
   4 *
   5 * Based on board/freescale/mx53loco/mx53loco_video.c:
   6 *
   7 * Copyright (C) 2012 Freescale Semiconductor, Inc.
   8 * Fabio Estevam <fabio.estevam@freescale.com>
   9 */
  10
  11#include <common.h>
  12#include <dm.h>
  13#include <linux/list.h>
  14#include <asm/arch/iomux-mx53.h>
  15#include <asm/mach-imx/video.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 <panel.h>
  22
  23static int detect_lcd(struct display_info_t const *dev)
  24{
  25        return 1;
  26}
  27
  28static void lcd_enable(void)
  29{
  30        struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
  31        struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
  32
  33        /* Set LDB_DI0 as clock source for IPU_DI0 */
  34        clrsetbits_le32(&mxc_ccm->cscmr2,
  35                        MXC_CCM_CSCMR2_DI0_CLK_SEL_MASK,
  36                        MXC_CCM_CSCMR2_DI0_CLK_SEL(
  37                                MXC_CCM_CSCMR2_DI0_CLK_SEL_LDB_DI0_CLK));
  38
  39        /* Turn on IPU LDB DI0 clocks */
  40        setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_LDB_DI0(3));
  41
  42        /* Turn on IPU DI0 clocks */
  43        setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_IPU_DI0(3));
  44
  45        /* Configure LDB */
  46        writel(IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
  47                IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
  48                IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
  49                &iomux->gpr[2]);
  50}
  51
  52static void do_enable_backlight(struct display_info_t const *dev)
  53{
  54        struct udevice *panel;
  55        int ret;
  56
  57        lcd_enable();
  58
  59        ret = uclass_get_device(UCLASS_PANEL, 0, &panel);
  60        if (ret) {
  61                printf("Could not find panel: %d\n", ret);
  62                return;
  63        }
  64
  65        panel_set_backlight(panel, 100);
  66        panel_enable_backlight(panel);
  67}
  68
  69struct display_info_t const displays[] = {
  70        {
  71                .bus    = -1,
  72                .addr   = -1,
  73                .pixfmt = IPU_PIX_FMT_RGB24,
  74                .detect = detect_lcd,
  75                .enable = do_enable_backlight,
  76                .mode = {
  77                        .name           = "NV-SPWGRGB888",
  78                        .refresh        = 60,
  79                        .xres           = 800,
  80                        .yres           = 480,
  81                        .pixclock       = 15384,
  82                        .left_margin    = 16,
  83                        .right_margin   = 210,
  84                        .upper_margin   = 10,
  85                        .lower_margin   = 22,
  86                        .hsync_len      = 30,
  87                        .vsync_len      = 13,
  88                        .sync           = FB_SYNC_EXT,
  89                        .vmode          = FB_VMODE_NONINTERLACED
  90                }
  91        }
  92};
  93
  94size_t display_count = ARRAY_SIZE(displays);
  95