diff options
Diffstat (limited to 'drivers/video/exynos/exynos_fb.c')
-rw-r--r-- | drivers/video/exynos/exynos_fb.c | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/drivers/video/exynos/exynos_fb.c b/drivers/video/exynos/exynos_fb.c new file mode 100644 index 00000000000..69edc3a3a4a --- /dev/null +++ b/drivers/video/exynos/exynos_fb.c @@ -0,0 +1,330 @@ +/* + * 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/gpio.h> +#include <asm-generic/errno.h> + +#include "exynos_fb.h" + +DECLARE_GLOBAL_DATA_PTR; + +static unsigned int panel_width, panel_height; + +#if CONFIG_IS_ENABLED(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 + +ushort *configuration_get_cmap(void) +{ +#if defined(CONFIG_LCD_LOGO) + return bmp_logo_palette; +#else + return NULL; +#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) +{ + struct gpio_desc pwm_out_gpio; + struct gpio_desc bl_en_gpio; + unsigned int node; + + 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); + +#if CONFIG_IS_ENABLED(OF_CONTROL) + node = fdtdec_next_compatible(gd->fdt_blob, 0, + COMPAT_SAMSUNG_EXYNOS_FIMD); + if (node <= 0) { + debug("FIMD: Can't get device node for FIMD\n"); + return; + } + gpio_request_by_name_nodev(gd->fdt_blob, node, "samsung,pwm-out-gpio", + 0, &pwm_out_gpio, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + + gpio_request_by_name_nodev(gd->fdt_blob, node, "samsung,bl-en-gpio", 0, + &bl_en_gpio, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + +#endif + exynos_cfg_ldo(); + + exynos_enable_ldo(1); + + if (vid->mipi_enabled) + exynos_mipi_dsi_init(); +} + +#if CONFIG_IS_ENABLED(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(); + +#if CONFIG_IS_ENABLED(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; +} |