drivers/video/exynos_fb.c

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  *
   4  * Author: InKi Dae <inki.dae@samsung.com>
   5  * Author: Donghwa Lee <dh09.lee@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include <config.h>
  24 #include <common.h>
  25 #include <lcd.h>
  26 #include <asm/io.h>
  27 #include <asm/arch/cpu.h>
  28 #include <asm/arch/clock.h>
  29 #include <asm/arch/clk.h>
  30 #include <asm/arch/mipi_dsim.h>
  31 #include <asm/arch/dp_info.h>
  32 #include <asm/arch/system.h>
  33
  34 #include "exynos_fb.h"
  35
  36 int lcd_line_length;
  37 int lcd_color_fg;
  38 int lcd_color_bg;
  39
  40 void *lcd_base;
  41 void *lcd_console_address;
  42
  43 short console_col;
  44 short console_row;
  45
  46 static unsigned int panel_width, panel_height;
  47
  48 static void exynos_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
  49 {
  50         unsigned long palette_size;
  51         unsigned int fb_size;
  52
  53         fb_size = vid->vl_row * vid->vl_col * (NBITS(vid->vl_bpix) >> 3);
  54
  55         lcd_base = lcdbase;
  56
  57         palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
  58
  59         exynos_fimd_lcd_init_mem((unsigned long)lcd_base,
  60                         (unsigned long)fb_size, palette_size);
  61 }
  62
  63 static void exynos_lcd_init(vidinfo_t *vid)
  64 {
  65         exynos_fimd_lcd_init(vid);
  66 }
  67
  68 static void draw_logo(void)
  69 {
  70         int x, y;
  71         ulong addr;
  72
  73         x = ((panel_width - panel_info.logo_width) >> 1);
  74         y = ((panel_height - panel_info.logo_height) >> 1) - 4;
  75
  76         addr = panel_info.logo_addr;
  77         bmp_display(addr, x, y);
  78 }
  79
  80 static void lcd_panel_on(vidinfo_t *vid)
  81 {
  82         udelay(vid->init_delay);
  83
  84         if (vid->backlight_reset)
  85                 vid->backlight_reset();
  86
  87         if (vid->cfg_gpio)
  88                 vid->cfg_gpio();
  89
  90         if (vid->lcd_power_on)
  91                 vid->lcd_power_on();
  92
  93         udelay(vid->power_on_delay);
  94
  95         if (vid->dp_enabled)
  96                 exynos_init_dp();
  97
  98         if (vid->reset_lcd) {
  99                 vid->reset_lcd();
 100                 udelay(vid->reset_delay);
 101         }
 102
 103         if (vid->backlight_on)
 104                 vid->backlight_on(1);
 105
 106         if (vid->cfg_ldo)
 107                 vid->cfg_ldo();
 108
 109         if (vid->enable_ldo)
 110                 vid->enable_ldo(1);
 111
 112         if (vid->mipi_enabled)
 113                 exynos_mipi_dsi_init();
 114 }
 115
 116 void lcd_ctrl_init(void *lcdbase)
 117 {
 118         set_system_display_ctrl();
 119         set_lcd_clk();
 120
 121         /* initialize parameters which is specific to panel. */
 122         init_panel_info(&panel_info);
 123
 124         panel_width = panel_info.vl_width;
 125         panel_height = panel_info.vl_height;
 126
 127         exynos_lcd_init_mem(lcdbase, &panel_info);
 128
 129         exynos_lcd_init(&panel_info);
 130 }
 131
 132 void lcd_enable(void)
 133 {
 134         if (panel_info.logo_on) {
 135                 memset(lcd_base, 0, panel_width * panel_height *
 136                                 (NBITS(panel_info.vl_bpix) >> 3));
 137                 draw_logo();
 138         }
 139
 140         lcd_panel_on(&panel_info);
 141 }
 142
 143 /* dummy function */
 144 void lcd_setcolreg(ushort regno, ushort red, ushort green, ushort blue)
 145 {
 146         return;
 147 }