/*
 * 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 <display.h>
#include <div64.h>
#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <panel.h>
#include <video.h>
#include <video_bridge.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/fb.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/system.h>
#include <asm/gpio.h>
#include <linux/errno.h>

DECLARE_GLOBAL_DATA_PTR;

enum {
        FIMD_RGB_INTERFACE = 1,
        FIMD_CPU_INTERFACE = 2,
};

enum exynos_fb_rgb_mode_t {
        MODE_RGB_P = 0,
        MODE_BGR_P = 1,
        MODE_RGB_S = 2,
        MODE_BGR_S = 3,
};

struct exynos_fb_priv {
        ushort vl_col;          /* Number of columns (i.e. 640) */
        ushort vl_row;          /* Number of rows (i.e. 480) */
        ushort vl_rot;          /* Rotation of Display (0, 1, 2, 3) */
        ushort vl_width;        /* Width of display area in millimeters */
        ushort vl_height;       /* Height of display area in millimeters */

        /* LCD configuration register */
        u_char vl_freq;         /* Frequency */
        u_char vl_clkp;         /* Clock polarity */
        u_char vl_oep;          /* Output Enable polarity */
        u_char vl_hsp;          /* Horizontal Sync polarity */
        u_char vl_vsp;          /* Vertical Sync polarity */
        u_char vl_dp;           /* Data polarity */
        u_char vl_bpix;         /* Bits per pixel */

        /* Horizontal control register. Timing from data sheet */
        u_char vl_hspw;         /* Horz sync pulse width */
        u_char vl_hfpd;         /* Wait before of line */
        u_char vl_hbpd;         /* Wait end of line */

        /* Vertical control register. */
        u_char  vl_vspw;        /* Vertical sync pulse width */
        u_char  vl_vfpd;        /* Wait before of frame */
        u_char  vl_vbpd;        /* Wait end of frame */
        u_char  vl_cmd_allow_len; /* Wait end of frame */

        unsigned int win_id;
        unsigned int init_delay;
        unsigned int power_on_delay;
        unsigned int reset_delay;
        unsigned int interface_mode;
        unsigned int mipi_enabled;
        unsigned int dp_enabled;
        unsigned int cs_setup;
        unsigned int wr_setup;
        unsigned int wr_act;
        unsigned int wr_hold;
        unsigned int logo_on;
        unsigned int logo_width;
        unsigned int logo_height;
        int logo_x_offset;
        int logo_y_offset;
        unsigned long logo_addr;
        unsigned int rgb_mode;
        unsigned int resolution;

        /* parent clock name(MPLL, EPLL or VPLL) */
        unsigned int pclk_name;
        /* ratio value for source clock from parent clock. */
        unsigned int sclk_div;

        unsigned int dual_lcd_enabled;
        struct exynos_fb *reg;
        struct exynos_platform_mipi_dsim *dsim_platform_data_dt;
};

static void exynos_fimd_set_dualrgb(struct exynos_fb_priv *priv, bool 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, &reg->dualrgb);
}

static void exynos_fimd_set_dp_clkcon(struct exynos_fb_priv *priv,
                                      unsigned int enabled)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;

        if (enabled)
                cfg = EXYNOS_DP_CLK_ENABLE;

        writel(cfg, &reg->dp_mie_clkcon);
}

static void exynos_fimd_set_par(struct exynos_fb_priv *priv,
                                unsigned int win_id)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;

        /* set window control */
        cfg = readl((unsigned int)&reg->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)&reg->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)&reg->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)&reg->vidosd0b +
                        EXYNOS_VIDOSD(win_id));

        /* set window size for window0*/
        cfg = EXYNOS_VIDOSD_SIZE(priv->vl_col * priv->vl_row);
        writel(cfg, (unsigned int)&reg->vidosd0c +
                        EXYNOS_VIDOSD(win_id));
}

static void exynos_fimd_set_buffer_address(struct exynos_fb_priv *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 * (VNBITS(priv->vl_bpix) / 8)) *
                                priv->vl_row);

        writel(start_addr, (unsigned int)&reg->vidw00add0b0 +
                        EXYNOS_BUFFER_OFFSET(win_id));
        writel(end_addr, (unsigned int)&reg->vidw00add1b0 +
                        EXYNOS_BUFFER_OFFSET(win_id));
}

static void exynos_fimd_set_clock(struct exynos_fb_priv *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(&reg->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, &reg->vidcon0);
}

void exynos_set_trigger(struct exynos_fb_priv *priv)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;

        cfg = readl(&reg->trigcon);

        cfg |= (EXYNOS_I80SOFT_TRIG_EN | EXYNOS_I80START_TRIG);

        writel(cfg, &reg->trigcon);
}

int exynos_is_i80_frame_done(struct exynos_fb_priv *priv)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;
        int status;

        cfg = readl(&reg->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 exynos_fb_priv *priv)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;

        /* display on */
        cfg = readl(&reg->vidcon0);
        cfg |= (EXYNOS_VIDCON0_ENVID_ENABLE | EXYNOS_VIDCON0_ENVID_F_ENABLE);
        writel(cfg, &reg->vidcon0);
}

static void exynos_fimd_window_on(struct exynos_fb_priv *priv,
                                  unsigned int win_id)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;

        /* enable window */
        cfg = readl((unsigned int)&reg->wincon0 +
                        EXYNOS_WINCON(win_id));
        cfg |= EXYNOS_WINCON_ENWIN_ENABLE;
        writel(cfg, (unsigned int)&reg->wincon0 +
                        EXYNOS_WINCON(win_id));

        cfg = readl(&reg->winshmap);
        cfg |= EXYNOS_WINSHMAP_CH_ENABLE(win_id);
        writel(cfg, &reg->winshmap);
}

void exynos_fimd_lcd_off(struct exynos_fb_priv *priv)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;

        cfg = readl(&reg->vidcon0);
        cfg &= (EXYNOS_VIDCON0_ENVID_DISABLE | EXYNOS_VIDCON0_ENVID_F_DISABLE);
        writel(cfg, &reg->vidcon0);
}

void exynos_fimd_window_off(struct exynos_fb_priv *priv, unsigned int win_id)
{
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0;

        cfg = readl((unsigned int)&reg->wincon0 +
                        EXYNOS_WINCON(win_id));
        cfg &= EXYNOS_WINCON_ENWIN_DISABLE;
        writel(cfg, (unsigned int)&reg->wincon0 +
                        EXYNOS_WINCON(win_id));

        cfg = readl(&reg->winshmap);
        cfg &= ~EXYNOS_WINSHMAP_CH_DISABLE(win_id);
        writel(cfg, &reg->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 udevice *dev)
{
        struct exynos_fb_priv *priv = dev_get_priv(dev);
        struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
        struct exynos_fb *reg = priv->reg;
        unsigned int cfg = 0, rgb_mode;
        unsigned int offset;
        unsigned int node;

        node = dev_of_offset(dev);
        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, &reg->vidcon0);

                cfg = readl(&reg->vidcon2);
                cfg &= ~(EXYNOS_VIDCON2_WB_MASK |
                        EXYNOS_VIDCON2_TVFORMATSEL_MASK |
                        EXYNOS_VIDCON2_TVFORMATSEL_YUV_MASK);
                cfg |= EXYNOS_VIDCON2_WB_DISABLE;
                writel(cfg, &reg->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)&reg->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)&reg->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)&reg->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)&reg->vidtcon2 + offset);
        }

        /* set display mode */
        cfg = readl(&reg->vidcon0);
        cfg &= ~EXYNOS_VIDCON0_PNRMODE_MASK;
        cfg |= (rgb_mode << EXYNOS_VIDCON0_PNRMODE_SHIFT);
        writel(cfg, &reg->vidcon0);

        /* set par */
        exynos_fimd_set_par(priv, priv->win_id);

        /* set memory address */
        exynos_fimd_set_buffer_address(priv, priv->win_id, plat->base);

        /* set buffer size */
        cfg = EXYNOS_VIDADDR_PAGEWIDTH(priv->vl_col *
                        VNBITS(priv->vl_bpix) / 8) |
                EXYNOS_VIDADDR_PAGEWIDTH_E(priv->vl_col *
                        VNBITS(priv->vl_bpix) / 8) |
                EXYNOS_VIDADDR_OFFSIZE(0) |
                EXYNOS_VIDADDR_OFFSIZE_E(0);

        writel(cfg, (unsigned int)&reg->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 exynos_fb_priv *priv)
{
        return priv->vl_col * priv->vl_row * (VNBITS(priv->vl_bpix) / 8);
}

int exynos_fb_ofdata_to_platdata(struct udevice *dev)
{
        struct exynos_fb_priv *priv = dev_get_priv(dev);
        unsigned int node = dev_of_offset(dev);
        const void *blob = gd->fdt_blob;
        fdt_addr_t addr;

        addr = devfdt_get_addr(dev);
        if (addr == FDT_ADDR_T_NONE) {
                debug("Can't get the FIMD base address\n");
                return -EINVAL;
        }
        priv->reg = (struct exynos_fb *)addr;

        priv->vl_col = fdtdec_get_int(blob, node, "samsung,vl-col", 0);
        if (priv->vl_col == 0) {
                debug("Can't get XRES\n");
                return -ENXIO;
        }

        priv->vl_row = fdtdec_get_int(blob, node, "samsung,vl-row", 0);
        if (priv->vl_row == 0) {
                debug("Can't get YRES\n");
                return -ENXIO;
        }

        priv->vl_width = fdtdec_get_int(blob, node,
                                                "samsung,vl-width", 0);

        priv->vl_height = fdtdec_get_int(blob, node,
                                                "samsung,vl-height", 0);

        priv->vl_freq = fdtdec_get_int(blob, node, "samsung,vl-freq", 0);
        if (priv->vl_freq == 0) {
                debug("Can't get refresh rate\n");
                return -ENXIO;
        }

        if (fdtdec_get_bool(blob, node, "samsung,vl-clkp"))
                priv->vl_clkp = VIDEO_ACTIVE_LOW;

        if (fdtdec_get_bool(blob, node, "samsung,vl-oep"))
                priv->vl_oep = VIDEO_ACTIVE_LOW;

        if (fdtdec_get_bool(blob, node, "samsung,vl-hsp"))
                priv->vl_hsp = VIDEO_ACTIVE_LOW;

        if (fdtdec_get_bool(blob, node, "samsung,vl-vsp"))
                priv->vl_vsp = VIDEO_ACTIVE_LOW;

        if (fdtdec_get_bool(blob, node, "samsung,vl-dp"))
                priv->vl_dp = VIDEO_ACTIVE_LOW;

        priv->vl_bpix = fdtdec_get_int(blob, node, "samsung,vl-bpix", 0);
        if (priv->vl_bpix == 0) {
                debug("Can't get bits per pixel\n");
                return -ENXIO;
        }

        priv->vl_hspw = fdtdec_get_int(blob, node, "samsung,vl-hspw", 0);
        if (priv->vl_hspw == 0) {
                debug("Can't get hsync width\n");
                return -ENXIO;
        }

        priv->vl_hfpd = fdtdec_get_int(blob, node, "samsung,vl-hfpd", 0);
        if (priv->vl_hfpd == 0) {
                debug("Can't get right margin\n");
                return -ENXIO;
        }

        priv->vl_hbpd = (u_char)fdtdec_get_int(blob, node,
                                                        "samsung,vl-hbpd", 0);
        if (priv->vl_hbpd == 0) {
                debug("Can't get left margin\n");
                return -ENXIO;
        }

        priv->vl_vspw = (u_char)fdtdec_get_int(blob, node,
                                                        "samsung,vl-vspw", 0);
        if (priv->vl_vspw == 0) {
                debug("Can't get vsync width\n");
                return -ENXIO;
        }

        priv->vl_vfpd = fdtdec_get_int(blob, node,
                                                        "samsung,vl-vfpd", 0);
        if (priv->vl_vfpd == 0) {
                debug("Can't get lower margin\n");
                return -ENXIO;
        }

        priv->vl_vbpd = fdtdec_get_int(blob, node, "samsung,vl-vbpd", 0);
        if (priv->vl_vbpd == 0) {
                debug("Can't get upper margin\n");
                return -ENXIO;
        }

        priv->vl_cmd_allow_len = fdtdec_get_int(blob, node,
                                                "samsung,vl-cmd-allow-len", 0);

        priv->win_id = fdtdec_get_int(blob, node, "samsung,winid", 0);
        priv->init_delay = fdtdec_get_int(blob, node,
                                                "samsung,init-delay", 0);
        priv->power_on_delay = fdtdec_get_int(blob, node,
                                                "samsung,power-on-delay", 0);
        priv->reset_delay = fdtdec_get_int(blob, node,
                                                "samsung,reset-delay", 0);
        priv->interface_mode = fdtdec_get_int(blob, node,
                                                "samsung,interface-mode", 0);
        priv->mipi_enabled = fdtdec_get_int(blob, node,
                                                "samsung,mipi-enabled", 0);
        priv->dp_enabled = fdtdec_get_int(blob, node,
                                                "samsung,dp-enabled", 0);
        priv->cs_setup = fdtdec_get_int(blob, node,
                                                "samsung,cs-setup", 0);
        priv->wr_setup = fdtdec_get_int(blob, node,
                                                "samsung,wr-setup", 0);
        priv->wr_act = fdtdec_get_int(blob, node, "samsung,wr-act", 0);
        priv->wr_hold = fdtdec_get_int(blob, node, "samsung,wr-hold", 0);

        priv->logo_on = fdtdec_get_int(blob, node, "samsung,logo-on", 0);
        if (priv->logo_on) {
                priv->logo_width = fdtdec_get_int(blob, node,
                                                "samsung,logo-width", 0);
                priv->logo_height = fdtdec_get_int(blob, node,
                                                "samsung,logo-height", 0);
                priv->logo_addr = fdtdec_get_int(blob, node,
                                                "samsung,logo-addr", 0);
        }

        priv->rgb_mode = fdtdec_get_int(blob, node,
                                                "samsung,rgb-mode", 0);
        priv->pclk_name = fdtdec_get_int(blob, node,
                                                "samsung,pclk-name", 0);
        priv->sclk_div = fdtdec_get_int(blob, node,
                                                "samsung,sclk-div", 0);
        priv->dual_lcd_enabled = fdtdec_get_int(blob, node,
                                                "samsung,dual-lcd-enabled", 0);

        return 0;
}

static int exynos_fb_probe(struct udevice *dev)
{
        struct video_priv *uc_priv = dev_get_uclass_priv(dev);
        struct exynos_fb_priv *priv = dev_get_priv(dev);
        struct udevice *panel, *bridge;
        struct udevice *dp;
        int ret;

        debug("%s: start\n", __func__);
        set_system_display_ctrl();
        set_lcd_clk();

#ifdef CONFIG_EXYNOS_MIPI_DSIM
        exynos_init_dsim_platform_data(&panel_info);
#endif
        exynos_fimd_lcd_init(dev);

        ret = uclass_first_device(UCLASS_PANEL, &panel);
        if (ret) {
                printf("LCD panel failed to probe\n");
                return ret;
        }
        if (!panel) {
                printf("LCD panel not found\n");
                return -ENODEV;
        }

        ret = uclass_first_device(UCLASS_DISPLAY, &dp);
        if (ret) {
                debug("%s: Display device error %d\n", __func__, ret);
                return ret;
        }
        if (!dev) {
                debug("%s: Display device missing\n", __func__);
                return -ENODEV;
        }
        ret = display_enable(dp, 18, NULL);
        if (ret) {
                debug("%s: Display enable error %d\n", __func__, ret);
                return ret;
        }

        /* backlight / pwm */
        ret = panel_enable_backlight(panel);
        if (ret) {
                debug("%s: backlight error: %d\n", __func__, ret);
                return ret;
        }

        ret = uclass_get_device(UCLASS_VIDEO_BRIDGE, 0, &bridge);
        if (!ret)
                ret = video_bridge_set_backlight(bridge, 80);
        if (ret) {
                debug("%s: No video bridge, or no backlight on bridge\n",
                      __func__);
                exynos_pinmux_config(PERIPH_ID_PWM0, 0);
        }

        uc_priv->xsize = priv->vl_col;
        uc_priv->ysize = priv->vl_row;
        uc_priv->bpix = priv->vl_bpix;

        /* Enable flushing after LCD writes if requested */
        video_set_flush_dcache(dev, true);

        return 0;
}

static int exynos_fb_bind(struct udevice *dev)
{
        struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);

        /* This is the maximum panel size we expect to see */
        plat->size = 1920 * 1080 * 2;

        return 0;
}

static const struct video_ops exynos_fb_ops = {
};

static const struct udevice_id exynos_fb_ids[] = {
        { .compatible = "samsung,exynos-fimd" },
        { }
};

U_BOOT_DRIVER(exynos_fb) = {
        .name   = "exynos_fb",
        .id     = UCLASS_VIDEO,
        .of_match = exynos_fb_ids,
        .ops    = &exynos_fb_ops,
        .bind   = exynos_fb_bind,
        .probe  = exynos_fb_probe,
        .ofdata_to_platdata     = exynos_fb_ofdata_to_platdata,
        .priv_auto_alloc_size   = sizeof(struct exynos_fb_priv),
};