]> git.karo-electronics.de Git - karo-tx-uboot.git/blob - drivers/video/exynos_fb.c
Exynos: fix cpuinfo and cpu detecting
[karo-tx-uboot.git] / 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/system.h>
32
33 #include "exynos_fb.h"
34
35 int lcd_line_length;
36 int lcd_color_fg;
37 int lcd_color_bg;
38
39 void *lcd_base;
40 void *lcd_console_address;
41
42 short console_col;
43 short console_row;
44
45 static unsigned int panel_width, panel_height;
46
47 /* LCD Panel data */
48 vidinfo_t panel_info;
49
50 static void exynos_lcd_init_mem(void *lcdbase, vidinfo_t *vid)
51 {
52         unsigned long palette_size;
53         unsigned int fb_size;
54
55         fb_size = vid->vl_row * vid->vl_col * (NBITS(vid->vl_bpix) >> 3);
56
57         lcd_base = lcdbase;
58
59         palette_size = NBITS(vid->vl_bpix) == 8 ? 256 : 16;
60
61         exynos_fimd_lcd_init_mem((unsigned long)lcd_base,
62                         (unsigned long)fb_size, palette_size);
63 }
64
65 static void exynos_lcd_init(vidinfo_t *vid)
66 {
67         exynos_fimd_lcd_init(vid);
68 }
69
70 static void draw_logo(void)
71 {
72         int x, y;
73         ulong addr;
74
75         x = ((panel_width - panel_info.logo_width) >> 1);
76         y = ((panel_height - panel_info.logo_height) >> 1) - 4;
77
78         addr = panel_info.logo_addr;
79         bmp_display(addr, x, y);
80 }
81
82 static void lcd_panel_on(vidinfo_t *vid)
83 {
84         udelay(vid->init_delay);
85
86         if (vid->backlight_reset)
87                 vid->backlight_reset();
88
89         if (vid->cfg_gpio)
90                 vid->cfg_gpio();
91
92         if (vid->lcd_power_on)
93                 vid->lcd_power_on();
94
95         udelay(vid->power_on_delay);
96
97         if (vid->reset_lcd) {
98                 vid->reset_lcd();
99                 udelay(vid->reset_delay);
100         }
101
102         if (vid->backlight_on)
103                 vid->backlight_on(1);
104
105         if (vid->cfg_ldo)
106                 vid->cfg_ldo();
107
108         if (vid->enable_ldo)
109                 vid->enable_ldo(1);
110
111         if (vid->mipi_enabled)
112                 exynos_mipi_dsi_init();
113 }
114
115 void lcd_ctrl_init(void *lcdbase)
116 {
117         set_system_display_ctrl();
118         set_lcd_clk();
119
120         /* initialize parameters which is specific to panel. */
121         init_panel_info(&panel_info);
122
123         panel_width = panel_info.vl_width;
124         panel_height = panel_info.vl_height;
125
126         exynos_lcd_init_mem(lcdbase, &panel_info);
127
128         exynos_lcd_init(&panel_info);
129 }
130
131 void lcd_enable(void)
132 {
133         if (panel_info.logo_on) {
134                 memset(lcd_base, 0, panel_width * panel_height *
135                                 (NBITS(panel_info.vl_bpix) >> 3));
136
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 }