/* * Copyright (C) 2012 Samsung Electronics * * Author: InKi Dae * Author: Donghwa Lee * * SPDX-License-Identifier: GPL-2.0+ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "exynos_fb.h" DECLARE_GLOBAL_DATA_PTR; struct vidinfo panel_info = { /* * Insert a value here so that we don't end up in the BSS * Reference: drivers/video/tegra.c */ .vl_col = -1, }; static void exynos_fimd_set_dualrgb(struct vidinfo *priv, unsigned int enabled) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; if (enabled) { cfg = EXYNOS_DUALRGB_BYPASS_DUAL | EXYNOS_DUALRGB_LINESPLIT | EXYNOS_DUALRGB_VDEN_EN_ENABLE; /* in case of Line Split mode, MAIN_CNT doesn't neet to set. */ cfg |= EXYNOS_DUALRGB_SUB_CNT(priv->vl_col / 2) | EXYNOS_DUALRGB_MAIN_CNT(0); } writel(cfg, ®->dualrgb); } static void exynos_fimd_set_dp_clkcon(struct vidinfo *priv, unsigned int enabled) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; if (enabled) cfg = EXYNOS_DP_CLK_ENABLE; writel(cfg, ®->dp_mie_clkcon); } static void exynos_fimd_set_par(struct vidinfo *priv, unsigned int win_id) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; /* set window control */ cfg = readl((unsigned int)®->wincon0 + EXYNOS_WINCON(win_id)); cfg &= ~(EXYNOS_WINCON_BITSWP_ENABLE | EXYNOS_WINCON_BYTESWP_ENABLE | EXYNOS_WINCON_HAWSWP_ENABLE | EXYNOS_WINCON_WSWP_ENABLE | EXYNOS_WINCON_BURSTLEN_MASK | EXYNOS_WINCON_BPPMODE_MASK | EXYNOS_WINCON_INRGB_MASK | EXYNOS_WINCON_DATAPATH_MASK); /* DATAPATH is DMA */ cfg |= EXYNOS_WINCON_DATAPATH_DMA; cfg |= EXYNOS_WINCON_HAWSWP_ENABLE; /* dma burst is 16 */ cfg |= EXYNOS_WINCON_BURSTLEN_16WORD; switch (priv->vl_bpix) { case 4: cfg |= EXYNOS_WINCON_BPPMODE_16BPP_565; break; default: cfg |= EXYNOS_WINCON_BPPMODE_24BPP_888; break; } writel(cfg, (unsigned int)®->wincon0 + EXYNOS_WINCON(win_id)); /* set window position to x=0, y=0*/ cfg = EXYNOS_VIDOSD_LEFT_X(0) | EXYNOS_VIDOSD_TOP_Y(0); writel(cfg, (unsigned int)®->vidosd0a + EXYNOS_VIDOSD(win_id)); cfg = EXYNOS_VIDOSD_RIGHT_X(priv->vl_col - 1) | EXYNOS_VIDOSD_BOTTOM_Y(priv->vl_row - 1) | EXYNOS_VIDOSD_RIGHT_X_E(1) | EXYNOS_VIDOSD_BOTTOM_Y_E(0); writel(cfg, (unsigned int)®->vidosd0b + EXYNOS_VIDOSD(win_id)); /* set window size for window0*/ cfg = EXYNOS_VIDOSD_SIZE(priv->vl_col * priv->vl_row); writel(cfg, (unsigned int)®->vidosd0c + EXYNOS_VIDOSD(win_id)); } static void exynos_fimd_set_buffer_address(struct vidinfo *priv, unsigned int win_id, ulong lcd_base_addr) { struct exynos_fb *reg = priv->reg; unsigned long start_addr, end_addr; start_addr = lcd_base_addr; end_addr = start_addr + ((priv->vl_col * (NBITS(priv->vl_bpix) / 8)) * priv->vl_row); writel(start_addr, (unsigned int)®->vidw00add0b0 + EXYNOS_BUFFER_OFFSET(win_id)); writel(end_addr, (unsigned int)®->vidw00add1b0 + EXYNOS_BUFFER_OFFSET(win_id)); } static void exynos_fimd_set_clock(struct vidinfo *priv) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0, div = 0, remainder, remainder_div; unsigned long pixel_clock; unsigned long long src_clock; if (priv->dual_lcd_enabled) { pixel_clock = priv->vl_freq * (priv->vl_hspw + priv->vl_hfpd + priv->vl_hbpd + priv->vl_col / 2) * (priv->vl_vspw + priv->vl_vfpd + priv->vl_vbpd + priv->vl_row); } else if (priv->interface_mode == FIMD_CPU_INTERFACE) { pixel_clock = priv->vl_freq * priv->vl_width * priv->vl_height * (priv->cs_setup + priv->wr_setup + priv->wr_act + priv->wr_hold + 1); } else { pixel_clock = priv->vl_freq * (priv->vl_hspw + priv->vl_hfpd + priv->vl_hbpd + priv->vl_col) * (priv->vl_vspw + priv->vl_vfpd + priv->vl_vbpd + priv->vl_row); } cfg = readl(®->vidcon0); cfg &= ~(EXYNOS_VIDCON0_CLKSEL_MASK | EXYNOS_VIDCON0_CLKVALUP_MASK | EXYNOS_VIDCON0_CLKVAL_F(0xFF) | EXYNOS_VIDCON0_VCLKEN_MASK | EXYNOS_VIDCON0_CLKDIR_MASK); cfg |= (EXYNOS_VIDCON0_CLKSEL_SCLK | EXYNOS_VIDCON0_CLKVALUP_ALWAYS | EXYNOS_VIDCON0_VCLKEN_NORMAL | EXYNOS_VIDCON0_CLKDIR_DIVIDED); src_clock = (unsigned long long) get_lcd_clk(); /* get quotient and remainder. */ remainder = do_div(src_clock, pixel_clock); div = src_clock; remainder *= 10; remainder_div = remainder / pixel_clock; /* round about one places of decimals. */ if (remainder_div >= 5) div++; /* in case of dual lcd mode. */ if (priv->dual_lcd_enabled) div--; cfg |= EXYNOS_VIDCON0_CLKVAL_F(div - 1); writel(cfg, ®->vidcon0); } void exynos_set_trigger(struct vidinfo *priv) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; cfg = readl(®->trigcon); cfg |= (EXYNOS_I80SOFT_TRIG_EN | EXYNOS_I80START_TRIG); writel(cfg, ®->trigcon); } int exynos_is_i80_frame_done(struct vidinfo *priv) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; int status; cfg = readl(®->trigcon); /* frame done func is valid only when TRIMODE[0] is set to 1. */ status = (cfg & EXYNOS_I80STATUS_TRIG_DONE) == EXYNOS_I80STATUS_TRIG_DONE; return status; } static void exynos_fimd_lcd_on(struct vidinfo *priv) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; /* display on */ cfg = readl(®->vidcon0); cfg |= (EXYNOS_VIDCON0_ENVID_ENABLE | EXYNOS_VIDCON0_ENVID_F_ENABLE); writel(cfg, ®->vidcon0); } static void exynos_fimd_window_on(struct vidinfo *priv, unsigned int win_id) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; /* enable window */ cfg = readl((unsigned int)®->wincon0 + EXYNOS_WINCON(win_id)); cfg |= EXYNOS_WINCON_ENWIN_ENABLE; writel(cfg, (unsigned int)®->wincon0 + EXYNOS_WINCON(win_id)); cfg = readl(®->winshmap); cfg |= EXYNOS_WINSHMAP_CH_ENABLE(win_id); writel(cfg, ®->winshmap); } void exynos_fimd_lcd_off(struct vidinfo *priv) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; cfg = readl(®->vidcon0); cfg &= (EXYNOS_VIDCON0_ENVID_DISABLE | EXYNOS_VIDCON0_ENVID_F_DISABLE); writel(cfg, ®->vidcon0); } void exynos_fimd_window_off(struct vidinfo *priv, unsigned int win_id) { struct exynos_fb *reg = priv->reg; unsigned int cfg = 0; cfg = readl((unsigned int)®->wincon0 + EXYNOS_WINCON(win_id)); cfg &= EXYNOS_WINCON_ENWIN_DISABLE; writel(cfg, (unsigned int)®->wincon0 + EXYNOS_WINCON(win_id)); cfg = readl(®->winshmap); cfg &= ~EXYNOS_WINSHMAP_CH_DISABLE(win_id); writel(cfg, ®->winshmap); } /* * The reset value for FIMD SYSMMU register MMU_CTRL is 3 * on Exynos5420 and newer versions. * This means FIMD SYSMMU is on by default on Exynos5420 * and newer versions. * Since in u-boot we don't use SYSMMU, we should disable * those FIMD SYSMMU. * Note that there are 2 SYSMMU for FIMD: m0 and m1. * m0 handles windows 0 and 4, and m1 handles windows 1, 2 and 3. * We disable both of them here. */ void exynos_fimd_disable_sysmmu(void) { u32 *sysmmufimd; unsigned int node; int node_list[2]; int count; int i; count = fdtdec_find_aliases_for_id(gd->fdt_blob, "fimd", COMPAT_SAMSUNG_EXYNOS_SYSMMU, node_list, 2); for (i = 0; i < count; i++) { node = node_list[i]; if (node <= 0) { debug("Can't get device node for fimd sysmmu\n"); return; } sysmmufimd = (u32 *)fdtdec_get_addr(gd->fdt_blob, node, "reg"); if (!sysmmufimd) { debug("Can't get base address for sysmmu fimdm0"); return; } writel(0x0, sysmmufimd); } } void exynos_fimd_lcd_init(struct vidinfo *priv, ulong lcd_base_address) { struct exynos_fb *reg; unsigned int cfg = 0, rgb_mode; unsigned int offset; unsigned int node; node = fdtdec_next_compatible(gd->fdt_blob, 0, COMPAT_SAMSUNG_EXYNOS_FIMD); if (node <= 0) debug("exynos_fb: Can't get device node for fimd\n"); reg = (struct exynos_fb *)fdtdec_get_addr(gd->fdt_blob, node, "reg"); if (reg == NULL) debug("Can't get the FIMD base address\n"); priv->reg = reg; if (fdtdec_get_bool(gd->fdt_blob, node, "samsung,disable-sysmmu")) exynos_fimd_disable_sysmmu(); offset = exynos_fimd_get_base_offset(); rgb_mode = priv->rgb_mode; if (priv->interface_mode == FIMD_RGB_INTERFACE) { cfg |= EXYNOS_VIDCON0_VIDOUT_RGB; writel(cfg, ®->vidcon0); cfg = readl(®->vidcon2); cfg &= ~(EXYNOS_VIDCON2_WB_MASK | EXYNOS_VIDCON2_TVFORMATSEL_MASK | EXYNOS_VIDCON2_TVFORMATSEL_YUV_MASK); cfg |= EXYNOS_VIDCON2_WB_DISABLE; writel(cfg, ®->vidcon2); /* set polarity */ cfg = 0; if (!priv->vl_clkp) cfg |= EXYNOS_VIDCON1_IVCLK_RISING_EDGE; if (!priv->vl_hsp) cfg |= EXYNOS_VIDCON1_IHSYNC_INVERT; if (!priv->vl_vsp) cfg |= EXYNOS_VIDCON1_IVSYNC_INVERT; if (!priv->vl_dp) cfg |= EXYNOS_VIDCON1_IVDEN_INVERT; writel(cfg, (unsigned int)®->vidcon1 + offset); /* set timing */ cfg = EXYNOS_VIDTCON0_VFPD(priv->vl_vfpd - 1); cfg |= EXYNOS_VIDTCON0_VBPD(priv->vl_vbpd - 1); cfg |= EXYNOS_VIDTCON0_VSPW(priv->vl_vspw - 1); writel(cfg, (unsigned int)®->vidtcon0 + offset); cfg = EXYNOS_VIDTCON1_HFPD(priv->vl_hfpd - 1); cfg |= EXYNOS_VIDTCON1_HBPD(priv->vl_hbpd - 1); cfg |= EXYNOS_VIDTCON1_HSPW(priv->vl_hspw - 1); writel(cfg, (unsigned int)®->vidtcon1 + offset); /* set lcd size */ cfg = EXYNOS_VIDTCON2_HOZVAL(priv->vl_col - 1) | EXYNOS_VIDTCON2_LINEVAL(priv->vl_row - 1) | EXYNOS_VIDTCON2_HOZVAL_E(priv->vl_col - 1) | EXYNOS_VIDTCON2_LINEVAL_E(priv->vl_row - 1); writel(cfg, (unsigned int)®->vidtcon2 + offset); } /* set display mode */ cfg = readl(®->vidcon0); cfg &= ~EXYNOS_VIDCON0_PNRMODE_MASK; cfg |= (rgb_mode << EXYNOS_VIDCON0_PNRMODE_SHIFT); writel(cfg, ®->vidcon0); /* set par */ exynos_fimd_set_par(priv, priv->win_id); /* set memory address */ exynos_fimd_set_buffer_address(priv, priv->win_id, lcd_base_address); /* set buffer size */ cfg = EXYNOS_VIDADDR_PAGEWIDTH(priv->vl_col * NBITS(priv->vl_bpix) / 8) | EXYNOS_VIDADDR_PAGEWIDTH_E(priv->vl_col * NBITS(priv->vl_bpix) / 8) | EXYNOS_VIDADDR_OFFSIZE(0) | EXYNOS_VIDADDR_OFFSIZE_E(0); writel(cfg, (unsigned int)®->vidw00add2 + EXYNOS_BUFFER_SIZE(priv->win_id)); /* set clock */ exynos_fimd_set_clock(priv); /* set rgb mode to dual lcd. */ exynos_fimd_set_dualrgb(priv, priv->dual_lcd_enabled); /* display on */ exynos_fimd_lcd_on(priv); /* window on */ exynos_fimd_window_on(priv, priv->win_id); exynos_fimd_set_dp_clkcon(priv, priv->dp_enabled); } unsigned long exynos_fimd_calc_fbsize(struct vidinfo *priv) { return priv->vl_col * priv->vl_row * (NBITS(priv->vl_bpix) / 8); } ushort *configuration_get_cmap(void) { #if defined(CONFIG_LCD_LOGO) return bmp_logo_palette; #else return NULL; #endif } static void exynos_lcd_init(struct vidinfo *vid, ulong lcd_base) { exynos_fimd_lcd_init(vid, lcd_base); /* 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(struct vidinfo *vid) { return 0; } static void lcd_panel_on(struct vidinfo *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); 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); exynos_cfg_ldo(); exynos_enable_ldo(1); if (vid->mipi_enabled) exynos_mipi_dsi_init(panel_info.dsim_platform_data_dt); } 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; } void lcd_ctrl_init(void *lcdbase) { set_system_display_ctrl(); set_lcd_clk(); #ifdef CONFIG_EXYNOS_MIPI_DSIM exynos_init_dsim_platform_data(&panel_info); #endif exynos_lcd_misc_init(&panel_info); exynos_lcd_init(&panel_info, (ulong)lcdbase); } void lcd_enable(void) { if (panel_info.logo_on) { memset((void *)gd->fb_base, 0, panel_info.vl_width * panel_info.vl_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; }