mirror of
https://github.com/AsahiLinux/u-boot
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94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2017 General Electric Company
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*
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* Based on board/freescale/mx53loco/mx53loco_video.c:
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*
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* Copyright (C) 2012 Freescale Semiconductor, Inc.
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* Fabio Estevam <fabio.estevam@freescale.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <linux/list.h>
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#include <asm/arch/iomux-mx53.h>
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#include <asm/mach-imx/video.h>
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#include <linux/fb.h>
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#include <ipu_pixfmt.h>
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#include <asm/arch/crm_regs.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/io.h>
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#include <panel.h>
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static int detect_lcd(struct display_info_t const *dev)
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{
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return 1;
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}
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static void lcd_enable(void)
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{
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struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
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struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
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/* Set LDB_DI0 as clock source for IPU_DI0 */
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clrsetbits_le32(&mxc_ccm->cscmr2,
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MXC_CCM_CSCMR2_DI0_CLK_SEL_MASK,
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MXC_CCM_CSCMR2_DI0_CLK_SEL(
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MXC_CCM_CSCMR2_DI0_CLK_SEL_LDB_DI0_CLK));
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/* Turn on IPU LDB DI0 clocks */
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setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_LDB_DI0(3));
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/* Turn on IPU DI0 clocks */
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setbits_le32(&mxc_ccm->CCGR6, MXC_CCM_CCGR6_IPU_DI0(3));
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/* Configure LDB */
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writel(IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG |
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IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT |
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IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0,
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&iomux->gpr[2]);
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}
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static void do_enable_backlight(struct display_info_t const *dev)
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{
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struct udevice *panel;
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int ret;
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lcd_enable();
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ret = uclass_get_device(UCLASS_PANEL, 0, &panel);
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if (ret) {
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printf("Could not find panel: %d\n", ret);
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return;
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}
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panel_set_backlight(panel, 100);
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panel_enable_backlight(panel);
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}
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struct display_info_t const displays[] = {
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{
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.bus = -1,
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.addr = -1,
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.pixfmt = IPU_PIX_FMT_RGB24,
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.detect = detect_lcd,
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.enable = do_enable_backlight,
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.mode = {
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.name = "NV-SPWGRGB888",
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.refresh = 60,
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.xres = 800,
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.yres = 480,
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.pixclock = 15384,
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.left_margin = 16,
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.right_margin = 210,
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.upper_margin = 10,
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.lower_margin = 22,
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.hsync_len = 30,
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.vsync_len = 13,
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.sync = FB_SYNC_EXT,
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.vmode = FB_VMODE_NONINTERLACED
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}
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}
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};
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size_t display_count = ARRAY_SIZE(displays);
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