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https://github.com/AsahiLinux/u-boot
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300 lines
6.9 KiB
C
300 lines
6.9 KiB
C
/*
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* Copyright (C) 2012 Samsung Electronics
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*
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* Author: InKi Dae <inki.dae@samsung.com>
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* Author: Donghwa Lee <dh09.lee@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <config.h>
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#include <common.h>
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#include <lcd.h>
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#include <fdtdec.h>
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#include <libfdt.h>
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#include <asm/io.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/clk.h>
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#include <asm/arch/mipi_dsim.h>
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#include <asm/arch/dp_info.h>
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#include <asm/arch/system.h>
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#include <asm-generic/errno.h>
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#include "exynos_fb.h"
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DECLARE_GLOBAL_DATA_PTR;
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static unsigned int panel_width, panel_height;
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#ifdef CONFIG_OF_CONTROL
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vidinfo_t panel_info = {
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/*
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* Insert a value here so that we don't end up in the BSS
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* Reference: drivers/video/tegra.c
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*/
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.vl_col = -1,
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};
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#endif
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static void exynos_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
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{
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unsigned long palette_size;
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unsigned int fb_size;
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fb_size = vid->vl_row * vid->vl_col * (NBITS(vid->vl_bpix) >> 3);
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palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
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exynos_fimd_lcd_init_mem((unsigned long)lcdbase,
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(unsigned long)fb_size, palette_size);
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}
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static void exynos_lcd_init(vidinfo_t *vid)
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{
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exynos_fimd_lcd_init(vid);
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/* Enable flushing after LCD writes if requested */
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lcd_set_flush_dcache(1);
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}
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__weak void exynos_cfg_lcd_gpio(void)
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{
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}
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__weak void exynos_backlight_on(unsigned int onoff)
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{
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}
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__weak void exynos_reset_lcd(void)
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{
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}
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__weak void exynos_lcd_power_on(void)
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{
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}
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__weak void exynos_cfg_ldo(void)
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{
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}
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__weak void exynos_enable_ldo(unsigned int onoff)
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{
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}
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__weak void exynos_backlight_reset(void)
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{
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}
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__weak int exynos_lcd_misc_init(vidinfo_t *vid)
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{
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return 0;
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}
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static void lcd_panel_on(vidinfo_t *vid)
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{
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udelay(vid->init_delay);
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exynos_backlight_reset();
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exynos_cfg_lcd_gpio();
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exynos_lcd_power_on();
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udelay(vid->power_on_delay);
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if (vid->dp_enabled)
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exynos_init_dp();
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exynos_reset_lcd();
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udelay(vid->reset_delay);
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exynos_backlight_on(1);
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exynos_cfg_ldo();
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exynos_enable_ldo(1);
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if (vid->mipi_enabled)
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exynos_mipi_dsi_init();
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}
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#ifdef CONFIG_OF_CONTROL
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int exynos_lcd_early_init(const void *blob)
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{
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unsigned int node;
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node = fdtdec_next_compatible(blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD);
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if (node <= 0) {
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debug("exynos_fb: Can't get device node for fimd\n");
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return -ENODEV;
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}
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panel_info.vl_col = fdtdec_get_int(blob, node, "samsung,vl-col", 0);
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if (panel_info.vl_col == 0) {
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debug("Can't get XRES\n");
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return -ENXIO;
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}
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panel_info.vl_row = fdtdec_get_int(blob, node, "samsung,vl-row", 0);
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if (panel_info.vl_row == 0) {
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debug("Can't get YRES\n");
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return -ENXIO;
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}
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panel_info.vl_width = fdtdec_get_int(blob, node,
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"samsung,vl-width", 0);
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panel_info.vl_height = fdtdec_get_int(blob, node,
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"samsung,vl-height", 0);
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panel_info.vl_freq = fdtdec_get_int(blob, node, "samsung,vl-freq", 0);
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if (panel_info.vl_freq == 0) {
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debug("Can't get refresh rate\n");
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return -ENXIO;
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}
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if (fdtdec_get_bool(blob, node, "samsung,vl-clkp"))
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panel_info.vl_clkp = CONFIG_SYS_LOW;
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if (fdtdec_get_bool(blob, node, "samsung,vl-oep"))
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panel_info.vl_oep = CONFIG_SYS_LOW;
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if (fdtdec_get_bool(blob, node, "samsung,vl-hsp"))
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panel_info.vl_hsp = CONFIG_SYS_LOW;
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if (fdtdec_get_bool(blob, node, "samsung,vl-vsp"))
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panel_info.vl_vsp = CONFIG_SYS_LOW;
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if (fdtdec_get_bool(blob, node, "samsung,vl-dp"))
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panel_info.vl_dp = CONFIG_SYS_LOW;
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panel_info.vl_bpix = fdtdec_get_int(blob, node, "samsung,vl-bpix", 0);
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if (panel_info.vl_bpix == 0) {
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debug("Can't get bits per pixel\n");
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return -ENXIO;
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}
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panel_info.vl_hspw = fdtdec_get_int(blob, node, "samsung,vl-hspw", 0);
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if (panel_info.vl_hspw == 0) {
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debug("Can't get hsync width\n");
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return -ENXIO;
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}
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panel_info.vl_hfpd = fdtdec_get_int(blob, node, "samsung,vl-hfpd", 0);
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if (panel_info.vl_hfpd == 0) {
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debug("Can't get right margin\n");
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return -ENXIO;
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}
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panel_info.vl_hbpd = (u_char)fdtdec_get_int(blob, node,
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"samsung,vl-hbpd", 0);
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if (panel_info.vl_hbpd == 0) {
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debug("Can't get left margin\n");
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return -ENXIO;
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}
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panel_info.vl_vspw = (u_char)fdtdec_get_int(blob, node,
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"samsung,vl-vspw", 0);
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if (panel_info.vl_vspw == 0) {
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debug("Can't get vsync width\n");
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return -ENXIO;
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}
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panel_info.vl_vfpd = fdtdec_get_int(blob, node,
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"samsung,vl-vfpd", 0);
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if (panel_info.vl_vfpd == 0) {
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debug("Can't get lower margin\n");
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return -ENXIO;
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}
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panel_info.vl_vbpd = fdtdec_get_int(blob, node, "samsung,vl-vbpd", 0);
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if (panel_info.vl_vbpd == 0) {
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debug("Can't get upper margin\n");
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return -ENXIO;
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}
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panel_info.vl_cmd_allow_len = fdtdec_get_int(blob, node,
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"samsung,vl-cmd-allow-len", 0);
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panel_info.win_id = fdtdec_get_int(blob, node, "samsung,winid", 0);
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panel_info.init_delay = fdtdec_get_int(blob, node,
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"samsung,init-delay", 0);
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panel_info.power_on_delay = fdtdec_get_int(blob, node,
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"samsung,power-on-delay", 0);
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panel_info.reset_delay = fdtdec_get_int(blob, node,
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"samsung,reset-delay", 0);
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panel_info.interface_mode = fdtdec_get_int(blob, node,
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"samsung,interface-mode", 0);
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panel_info.mipi_enabled = fdtdec_get_int(blob, node,
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"samsung,mipi-enabled", 0);
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panel_info.dp_enabled = fdtdec_get_int(blob, node,
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"samsung,dp-enabled", 0);
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panel_info.cs_setup = fdtdec_get_int(blob, node,
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"samsung,cs-setup", 0);
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panel_info.wr_setup = fdtdec_get_int(blob, node,
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"samsung,wr-setup", 0);
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panel_info.wr_act = fdtdec_get_int(blob, node, "samsung,wr-act", 0);
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panel_info.wr_hold = fdtdec_get_int(blob, node, "samsung,wr-hold", 0);
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panel_info.logo_on = fdtdec_get_int(blob, node, "samsung,logo-on", 0);
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if (panel_info.logo_on) {
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panel_info.logo_width = fdtdec_get_int(blob, node,
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"samsung,logo-width", 0);
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panel_info.logo_height = fdtdec_get_int(blob, node,
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"samsung,logo-height", 0);
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panel_info.logo_addr = fdtdec_get_int(blob, node,
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"samsung,logo-addr", 0);
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}
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panel_info.rgb_mode = fdtdec_get_int(blob, node,
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"samsung,rgb-mode", 0);
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panel_info.pclk_name = fdtdec_get_int(blob, node,
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"samsung,pclk-name", 0);
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panel_info.sclk_div = fdtdec_get_int(blob, node,
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"samsung,sclk-div", 0);
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panel_info.dual_lcd_enabled = fdtdec_get_int(blob, node,
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"samsung,dual-lcd-enabled", 0);
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return 0;
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}
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#endif
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void lcd_ctrl_init(void *lcdbase)
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{
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set_system_display_ctrl();
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set_lcd_clk();
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#ifdef CONFIG_OF_CONTROL
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#ifdef CONFIG_EXYNOS_MIPI_DSIM
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exynos_init_dsim_platform_data(&panel_info);
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#endif
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exynos_lcd_misc_init(&panel_info);
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#else
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/* initialize parameters which is specific to panel. */
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init_panel_info(&panel_info);
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#endif
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panel_width = panel_info.vl_width;
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panel_height = panel_info.vl_height;
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exynos_lcd_init_mem(lcdbase, &panel_info);
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exynos_lcd_init(&panel_info);
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}
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void lcd_enable(void)
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{
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if (panel_info.logo_on) {
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memset((void *) gd->fb_base, 0, panel_width * panel_height *
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(NBITS(panel_info.vl_bpix) >> 3));
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}
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lcd_panel_on(&panel_info);
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}
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/* dummy function */
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void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
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{
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return;
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}
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