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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 | /* * (C) Copyright 2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * 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 <common.h> #include <lcd.h> #include <mpc5xxx.h> #ifdef CONFIG_LCD #undef SWAPPED_LCD /* For the previous h/w version */ /* * The name of the device used for communication * with the PSoC. */ #define PSOC_PSC MPC5XXX_PSC2 #define PSOC_BAUD 230400UL #define RTS_ASSERT 1 #define RTS_NEGATE 0 #define CTS_ASSERT 1 #define CTS_NEGATE 0 /* * Dimensions in pixels */ #define LCD_WIDTH 160 #define LCD_HEIGHT 100 /* * Dimensions in bytes */ #define LCD_BUF_SIZE ((LCD_WIDTH*LCD_HEIGHT)>>3) #if LCD_BPP != LCD_MONOCHROME #error "MCC200 support only monochrome displays (1 bpp)!" #endif #define PSOC_RETRIES 10 /* each of PSOC_WAIT_TIME */ #define PSOC_WAIT_TIME 10 /* usec */ DECLARE_GLOBAL_DATA_PTR; /* * LCD information */ vidinfo_t panel_info = { LCD_WIDTH, LCD_HEIGHT, LCD_BPP }; int lcd_line_length; int lcd_color_fg; int lcd_color_bg; /* * Frame buffer memory information */ void *lcd_base; /* Start of framebuffer memory */ void *lcd_console_address; /* Start of console buffer */ short console_col = 0; short console_row = 0; /* * The device we use to communicate with PSoC */ int serial_inited = 0; /* * Exported functions */ void lcd_initcolregs (void); void lcd_ctrl_init (void *lcdbase); void lcd_enable (void); /* * Imported functions to support the PSoC protocol */ extern int serial_init_dev (unsigned long dev_base); extern void serial_setrts_dev (unsigned long dev_base, int s); extern int serial_getcts_dev (unsigned long dev_base); extern void serial_putc_raw_dev(unsigned long dev_base, const char c); /* * Just stubs for our driver, needed for compiling compabilty with * the common LCD driver code. */ void lcd_initcolregs (void) { } void lcd_ctrl_init (void *lcdbase) { } /* * Function sends the contents of the frame-buffer to the LCD */ void lcd_enable (void) { int i, retries, fb_size; if (!serial_inited) { unsigned long baud; baud = gd->baudrate; gd->baudrate = PSOC_BAUD; serial_init_dev(PSOC_PSC); gd->baudrate = baud; serial_setrts_dev (PSOC_PSC, RTS_ASSERT); serial_inited = 1; } /* * Implement PSoC communication protocol: * 1. Assert RTS, wait CTS assertion * 2. Transmit data * 3. Negate RTS, wait CTS negation */ /* 1 */ serial_setrts_dev (PSOC_PSC, RTS_ASSERT); for (retries = PSOC_RETRIES; retries; retries--) { if (serial_getcts_dev(PSOC_PSC) == CTS_ASSERT) break; udelay (PSOC_WAIT_TIME); } if (!retries) { printf ("%s Error: PSoC doesn't respond on " "RTS ASSERT\n", __FUNCTION__); } /* 2 */ fb_size = panel_info.vl_row * (panel_info.vl_col >> 3); #if !defined(SWAPPED_LCD) for (i=0; i<fb_size; i++) { serial_putc_raw_dev (PSOC_PSC, ((char *)lcd_base)[i]); } #else { int x, y, pwidth; char *p = (char *)lcd_base; pwidth = ((panel_info.vl_col+7) >> 3); for (y=0; y<panel_info.vl_row; y++) { i = y * pwidth; for (x=0; x<pwidth; x+=5) { serial_putc_raw_dev (PSOC_PSC, (p[i+x+2]<<4 & 0xF0) | (p[i+x+3]>>4 & 0x0F)); serial_putc_raw_dev (PSOC_PSC, (p[i+x+3]<<4 & 0xF0) | (p[i+x+4]>>4 & 0x0F)); serial_putc_raw_dev (PSOC_PSC, (p[i+x+4]<<4 & 0xF0) | (p[i+x]>>4 & 0x0F)); serial_putc_raw_dev (PSOC_PSC, (p[i+x]<<4 & 0xF0) | (p[i+x+1]>>4 & 0x0F)); serial_putc_raw_dev (PSOC_PSC, (p[i+x+1]<<4 & 0xF0) | (p[i+x+2]>>4 & 0x0F)); } } } #endif /* 3 */ serial_setrts_dev (PSOC_PSC, RTS_NEGATE); for (retries = PSOC_RETRIES; retries; retries--) { if (serial_getcts_dev(PSOC_PSC) == CTS_NEGATE) break; udelay (PSOC_WAIT_TIME); } return; } #ifdef CONFIG_PROGRESSBAR #define FONT_WIDTH 8 /* the same as VIDEO_FONT_WIDTH in video_font.h */ void show_progress (int size, int tot) { int cnt; int i; static int rc = 0; rc += size; cnt = ((LCD_WIDTH/FONT_WIDTH) * rc) / tot; rc -= (cnt * tot) / (LCD_WIDTH/FONT_WIDTH); for (i = 0; i < cnt; i++) { lcd_putc(0xdc); } if (cnt) { lcd_enable(); /* MCC200-specific - send the framebuffer to PSoC */ } } #endif #endif /* CONFIG_LCD */ |