summaryrefslogtreecommitdiff
path: root/board/esd/common/lcd.c
blob: a1fc18089d3a21260b06b9e08558fb4b901ab352 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/*
 * (C) Copyright 2003-2004
 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 "lcd.h"


int palette_index;
int palette_value;


#ifdef CFG_LCD_ENDIAN
void lcd_setup(int lcd, int config)
{
	if (lcd == 0) {
		/*
		 * Set endianess and reset lcd controller 0 (small)
		 */
		out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD0_RST); /* set reset to low */
		udelay(10); /* wait 10us */
		if (config == 1) {
			out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* big-endian */
		} else {
			out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD_ENDIAN); /* little-endian */
		}
		udelay(10); /* wait 10us */
		out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD0_RST); /* set reset to high */
	} else {
		/*
		 * Set endianess and reset lcd controller 1 (big)
		 */
		out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD1_RST); /* set reset to low */
		udelay(10); /* wait 10us */
		if (config == 1) {
			out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* big-endian */
		} else {
			out32(GPIO0_OR, in32(GPIO0_OR) & ~CFG_LCD_ENDIAN); /* little-endian */
		}
		udelay(10); /* wait 10us */
		out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD1_RST); /* set reset to high */
	}

	/*
	 * CFG_LCD_ENDIAN may also be FPGA_RESET, so set inactive
	 */
	out32(GPIO0_OR, in32(GPIO0_OR) | CFG_LCD_ENDIAN); /* set reset high again */
}
#endif /* #ifdef CFG_LCD_ENDIAN */


void lcd_init(uchar *lcd_reg, uchar *lcd_mem, S1D_REGS *regs, int reg_count,
	      uchar *logo_bmp, ulong len)
{
	int i;
	ushort s1dReg;
	uchar s1dValue;
	uchar *ptr;
	ushort *ptr2;
	ushort val;
	unsigned char *dst;
	int x, y;
	int width, height, bpp, colors, line_size;
	int header_size;
	unsigned char *bmp;
	unsigned char r, g, b;
	BITMAPINFOHEADER *bm_info;
	int reg_byte_swap;

	/*
	 * Detect epson
	 */
	if (lcd_reg[0] == 0x1c) {
		/*
		 * Big epson detected
		 */
		reg_byte_swap = FALSE;
		palette_index = 0x1e2;
		palette_value = 0x1e4;
		puts("LCD:   S1D13806");
	} else if (lcd_reg[1] == 0x1c) {
		/*
		 * Big epson detected (with register swap bug)
		 */
		reg_byte_swap = TRUE;
		palette_index = 0x1e3;
		palette_value = 0x1e5;
		puts("LCD:   S1D13806S");
	} else if (lcd_reg[0] == 0x18) {
		/*
		 * Small epson detected (704)
		 */
		reg_byte_swap = FALSE;
		palette_index = 0x15;
		palette_value = 0x17;
		puts("LCD:   S1D13704");
	} else if (lcd_reg[0x10000] == 0x24) {
		/*
		 * Small epson detected (705)
		 */
		reg_byte_swap = FALSE;
		palette_index = 0x15;
		palette_value = 0x17;
		lcd_reg += 0x10000; /* add offset for 705 regs */
		puts("LCD:   S1D13705");
	} else {
		puts("LCD:   No controller detected!\n");
		return;
	}

	for (i = 0; i<reg_count; i++) {
		s1dReg = regs[i].Index;
		if (reg_byte_swap) {
			if ((s1dReg & 0x0001) == 0)
				s1dReg |= 0x0001;
			else
				s1dReg &= ~0x0001;
		}
		s1dValue = regs[i].Value;
		lcd_reg[s1dReg] = s1dValue;
        }

	/*
	 * Decompress bmp image
	 */
	dst = malloc(CFG_LCD_LOGO_MAX_SIZE);
	if (gunzip(dst, CFG_LCD_LOGO_MAX_SIZE, (uchar *)logo_bmp, &len) != 0) {
		return;
	}

	/*
	 * Check for bmp mark 'BM'
	 */
	if (*(ushort *)dst != 0x424d) {
		printf("LCD: Unknown image format!\n");
		free(dst);
		return;
	}

	/*
	 * Get image info from bmp-header
	 */
	bm_info = (BITMAPINFOHEADER *)(dst + 14);
	bpp = LOAD_SHORT(bm_info->biBitCount);
	width = LOAD_LONG(bm_info->biWidth);
	height = LOAD_LONG(bm_info->biHeight);
	switch (bpp) {
	case 1:
		colors = 1;
		line_size = width >> 3;
		break;
	case 4:
		colors = 16;
		line_size = width >> 1;
		break;
	case 8:
		colors = 256;
		line_size = width;
		break;
	case 24:
		colors = 0;
		line_size = width * 3;
		break;
	default:
		printf("LCD: Unknown bpp (%d) im image!\n", bpp);
		free(dst);
		return;
	}
	printf(" (%d*%d, %dbpp)\n", width, height, bpp);

	/*
	 * Write color palette
	 */
	if (colors <= 256) {
		ptr = (unsigned char *)(dst + 14 + 40);
		for (i=0; i<colors; i++) {
			b = *ptr++;
			g = *ptr++;
			r = *ptr++;
			ptr++;
			S1D_WRITE_PALETTE(lcd_reg, i, r, g, b);
		}
	}

	/*
	 * Write bitmap data into framebuffer
	 */
	ptr = lcd_mem;
	ptr2 = (ushort *)lcd_mem;
	header_size = 14 + 40 + 4*colors;          /* skip bmp header */
	for (y=0; y<height; y++) {
		bmp = &dst[(height-1-y)*line_size + header_size];
		if (bpp == 24) {
			for (x=0; x<width; x++) {
				/*
				 * Generate epson 16bpp fb-format from 24bpp image
				 */
				b = *bmp++ >> 3;
				g = *bmp++ >> 2;
				r = *bmp++ >> 3;
				val = ((r & 0x1f) << 11) | ((g & 0x3f) << 5) | (b & 0x1f);
				*ptr2++ = val;
			}
		} else {
			for (x=0; x<line_size; x++) {
				*ptr++ = *bmp++;
			}
		}
	}

	free(dst);
}