blob: ed0823bf977af0a6bc1d91fae9240479513c4d6b [file] [log] [blame]
/*
* Copyright (C) 2012 Samsung Electronics
*
* Author: InKi Dae <inki.dae@samsung.com>
* Author: Donghwa Lee <dh09.lee@samsung.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#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;
/*
* board_init_f(arch/arm/lib/board.c) calls lcd_setmem() which needs
* panel_info.vl_col, panel_info.vl_row and panel_info.vl_bpix to reserve
* FB memory at a very early stage, i.e even before exynos_fimd_parse_dt()
* is called. So, we are forced to statically assign it.
*/
#ifdef CONFIG_OF_CONTROL
vidinfo_t panel_info = {
.vl_col = LCD_XRES,
.vl_row = LCD_YRES,
.vl_bpix = LCD_COLOR16,
};
#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);
}
#ifdef CONFIG_CMD_BMP
static void draw_logo(void)
{
int x, y;
ulong addr;
if (panel_width >= panel_info.logo_width) {
x = ((panel_width - panel_info.logo_width) >> 1);
} else {
x = 0;
printf("Warning: image width is bigger than display width\n");
}
if (panel_height >= panel_info.logo_height) {
y = ((panel_height - panel_info.logo_height) >> 1) - 4;
} else {
y = 0;
printf("Warning: image height is bigger than display height\n");
}
addr = panel_info.logo_addr;
bmp_display(addr, x, y);
}
#endif
void __exynos_cfg_lcd_gpio(void)
{
}
void exynos_cfg_lcd_gpio(void)
__attribute__((weak, alias("__exynos_cfg_lcd_gpio")));
void __exynos_backlight_on(unsigned int onoff)
{
}
void exynos_backlight_on(unsigned int onoff)
__attribute__((weak, alias("__exynos_cfg_lcd_gpio")));
void __exynos_reset_lcd(void)
{
}
void exynos_reset_lcd(void)
__attribute__((weak, alias("__exynos_reset_lcd")));
void __exynos_lcd_power_on(void)
{
}
void exynos_lcd_power_on(void)
__attribute__((weak, alias("__exynos_lcd_power_on")));
void __exynos_cfg_ldo(void)
{
}
void exynos_cfg_ldo(void)
__attribute__((weak, alias("__exynos_cfg_ldo")));
void __exynos_enable_ldo(unsigned int onoff)
{
}
void exynos_enable_ldo(unsigned int onoff)
__attribute__((weak, alias("__exynos_enable_ldo")));
void __exynos_backlight_reset(void)
{
}
void exynos_backlight_reset(void)
__attribute__((weak, alias("__exynos_backlight_reset")));
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_fimd_parse_dt(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
if (exynos_fimd_parse_dt(gd->fdt_blob))
debug("Can't get proper panel info\n");
#endif
/* initialize parameters which is specific to panel. */
init_panel_info(&panel_info);
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));
#ifdef CONFIG_CMD_BMP
draw_logo();
#endif
}
lcd_panel_on(&panel_info);
}
/* dummy function */
void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
{
return;
}