u-boot/drivers/video/exynos/exynos_fb.c

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/*
* 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),
};