1 /* 2 * Copyright (C) 2009 3 * Marek Vasut <marek.vasut@gmail.com> 4 * 5 * Heavily based on pxa255_idp platform 6 * 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 26 #include <common.h> 27 #include <command.h> 28 #include <serial.h> 29 #include <asm/arch/hardware.h> 30 #include <spi.h> 31 32 DECLARE_GLOBAL_DATA_PTR; 33 34 #ifdef CONFIG_CMD_SPI 35 void lcd_start(void); 36 #else 37 inline void lcd_start(void) {}; 38 #endif 39 40 /* 41 * Miscelaneous platform dependent initialisations 42 */ 43 44 int board_init (void) 45 { 46 /* memory and cpu-speed are setup before relocation */ 47 /* so we do _nothing_ here */ 48 49 /* arch number of Lubbock-Board */ 50 gd->bd->bi_arch_number = MACH_TYPE_ZIPIT2; 51 52 /* adress of boot parameters */ 53 gd->bd->bi_boot_params = 0xa0000100; 54 55 /* Enable LCD */ 56 lcd_start(); 57 58 return 0; 59 } 60 61 int board_late_init(void) 62 { 63 setenv("stdout", "serial"); 64 setenv("stderr", "serial"); 65 return 0; 66 } 67 68 struct serial_device *default_serial_console (void) 69 { 70 return &serial_stuart_device; 71 } 72 73 int dram_init (void) 74 { 75 gd->bd->bi_dram[0].start = PHYS_SDRAM_1; 76 gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; 77 78 return 0; 79 } 80 81 #ifdef CONFIG_CMD_SPI 82 83 struct { 84 unsigned char reg; 85 unsigned short data; 86 unsigned char mdelay; 87 } lcd_data[] = { 88 { 0x07, 0x0000, 0 }, 89 { 0x13, 0x0000, 10 }, 90 { 0x11, 0x3004, 0 }, 91 { 0x14, 0x200F, 0 }, 92 { 0x10, 0x1a20, 0 }, 93 { 0x13, 0x0040, 50 }, 94 { 0x13, 0x0060, 0 }, 95 { 0x13, 0x0070, 200 }, 96 { 0x01, 0x0127, 0 }, 97 { 0x02, 0x0700, 0 }, 98 { 0x03, 0x1030, 0 }, 99 { 0x08, 0x0208, 0 }, 100 { 0x0B, 0x0620, 0 }, 101 { 0x0C, 0x0110, 0 }, 102 { 0x30, 0x0120, 0 }, 103 { 0x31, 0x0127, 0 }, 104 { 0x32, 0x0000, 0 }, 105 { 0x33, 0x0503, 0 }, 106 { 0x34, 0x0727, 0 }, 107 { 0x35, 0x0124, 0 }, 108 { 0x36, 0x0706, 0 }, 109 { 0x37, 0x0701, 0 }, 110 { 0x38, 0x0F00, 0 }, 111 { 0x39, 0x0F00, 0 }, 112 { 0x40, 0x0000, 0 }, 113 { 0x41, 0x0000, 0 }, 114 { 0x42, 0x013f, 0 }, 115 { 0x43, 0x0000, 0 }, 116 { 0x44, 0x013f, 0 }, 117 { 0x45, 0x0000, 0 }, 118 { 0x46, 0xef00, 0 }, 119 { 0x47, 0x013f, 0 }, 120 { 0x48, 0x0000, 0 }, 121 { 0x07, 0x0015, 30 }, 122 { 0x07, 0x0017, 0 }, 123 { 0x20, 0x0000, 0 }, 124 { 0x21, 0x0000, 0 }, 125 { 0x22, 0x0000, 0 }, 126 }; 127 128 void zipitz2_spi_sda(int set) 129 { 130 /* GPIO 13 */ 131 if (set) 132 GPSR0 = (1 << 13); 133 else 134 GPCR0 = (1 << 13); 135 } 136 137 void zipitz2_spi_scl(int set) 138 { 139 /* GPIO 22 */ 140 if (set) 141 GPCR0 = (1 << 22); 142 else 143 GPSR0 = (1 << 22); 144 } 145 146 unsigned char zipitz2_spi_read(void) 147 { 148 /* GPIO 40 */ 149 return !!(GPLR1 & (1 << 8)); 150 } 151 152 int spi_cs_is_valid(unsigned int bus, unsigned int cs) 153 { 154 /* Always valid */ 155 return 1; 156 } 157 158 void spi_cs_activate(struct spi_slave *slave) 159 { 160 /* GPIO 88 low */ 161 GPCR2 = (1 << 24); 162 } 163 164 void spi_cs_deactivate(struct spi_slave *slave) 165 { 166 /* GPIO 88 high */ 167 GPSR2 = (1 << 24); 168 169 } 170 171 void lcd_start(void) 172 { 173 int i; 174 unsigned char reg[3] = { 0x74, 0x00, 0 }; 175 unsigned char data[3] = { 0x76, 0, 0 }; 176 unsigned char dummy[3] = { 0, 0, 0 }; 177 178 /* PWM2 AF */ 179 GAFR0_L |= 0x00800000; 180 /* Enable clock to all PWM */ 181 CKEN |= 0x3; 182 /* Configure PWM2 */ 183 PWM_CTRL2 = 0x4f; 184 PWM_PWDUTY2 = 0x2ff; 185 PWM_PERVAL2 = 792; 186 187 /* Toggle the reset pin to reset the LCD */ 188 GPSR0 = (1 << 19); 189 udelay(100000); 190 GPCR0 = (1 << 19); 191 udelay(20000); 192 GPSR0 = (1 << 19); 193 udelay(20000); 194 195 /* Program the LCD init sequence */ 196 for (i = 0; i < sizeof(lcd_data) / sizeof(lcd_data[0]); i++) { 197 reg[0] = 0x74; 198 reg[1] = 0x0; 199 reg[2] = lcd_data[i].reg; 200 spi_xfer(NULL, 24, reg, dummy, SPI_XFER_BEGIN | SPI_XFER_END); 201 202 data[0] = 0x76; 203 data[1] = lcd_data[i].data >> 8; 204 data[2] = lcd_data[i].data & 0xff; 205 spi_xfer(NULL, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END); 206 207 if (lcd_data[i].mdelay) 208 udelay(lcd_data[i].mdelay * 1000); 209 } 210 211 GPSR0 = (1 << 11); 212 } 213 #endif 214