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