| /* |
| * 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; |
| } |
