1 /* 2 * arch/arm/mach-ep93xx/edb93xx.c 3 * Cirrus Logic EDB93xx Development Board support. 4 * 5 * EDB93XX, EDB9301, EDB9307A 6 * Copyright (C) 2008-2009 H Hartley Sweeten <hsweeten@visionengravers.com> 7 * 8 * EDB9302 9 * Copyright (C) 2006 George Kashperko <george@chas.com.ua> 10 * 11 * EDB9302A, EDB9315, EDB9315A 12 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> 13 * 14 * EDB9307 15 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org> 16 * 17 * EDB9312 18 * Copyright (C) 2006 Infosys Technologies Limited 19 * Toufeeq Hussain <toufeeq_hussain@infosys.com> 20 * 21 * This program is free software; you can redistribute it and/or modify 22 * it under the terms of the GNU General Public License as published by 23 * the Free Software Foundation; either version 2 of the License, or (at 24 * your option) any later version. 25 */ 26 27 #include <linux/kernel.h> 28 #include <linux/init.h> 29 #include <linux/platform_device.h> 30 #include <linux/i2c.h> 31 #include <linux/i2c-gpio.h> 32 #include <linux/spi/spi.h> 33 34 #include <sound/cs4271.h> 35 36 #include <mach/hardware.h> 37 #include <linux/platform_data/video-ep93xx.h> 38 #include <linux/platform_data/spi-ep93xx.h> 39 #include <mach/gpio-ep93xx.h> 40 41 #include <asm/mach-types.h> 42 #include <asm/mach/arch.h> 43 44 #include "soc.h" 45 46 static void __init edb93xx_register_flash(void) 47 { 48 if (machine_is_edb9307() || machine_is_edb9312() || 49 machine_is_edb9315()) { 50 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M); 51 } else { 52 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); 53 } 54 } 55 56 static struct ep93xx_eth_data __initdata edb93xx_eth_data = { 57 .phy_id = 1, 58 }; 59 60 61 /************************************************************************* 62 * EDB93xx i2c peripheral handling 63 *************************************************************************/ 64 static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = { 65 .sda_pin = EP93XX_GPIO_LINE_EEDAT, 66 .sda_is_open_drain = 0, 67 .scl_pin = EP93XX_GPIO_LINE_EECLK, 68 .scl_is_open_drain = 0, 69 .udelay = 0, /* default to 100 kHz */ 70 .timeout = 0, /* default to 100 ms */ 71 }; 72 73 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = { 74 { 75 I2C_BOARD_INFO("isl1208", 0x6f), 76 }, 77 }; 78 79 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = { 80 { 81 I2C_BOARD_INFO("ds1337", 0x68), 82 }, 83 }; 84 85 static void __init edb93xx_register_i2c(void) 86 { 87 if (machine_is_edb9302a() || machine_is_edb9307a() || 88 machine_is_edb9315a()) { 89 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 90 edb93xxa_i2c_board_info, 91 ARRAY_SIZE(edb93xxa_i2c_board_info)); 92 } else if (machine_is_edb9302() || machine_is_edb9307() 93 || machine_is_edb9312() || machine_is_edb9315()) { 94 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 95 edb93xx_i2c_board_info, 96 ARRAY_SIZE(edb93xx_i2c_board_info)); 97 } 98 } 99 100 101 /************************************************************************* 102 * EDB93xx SPI peripheral handling 103 *************************************************************************/ 104 static struct cs4271_platform_data edb93xx_cs4271_data = { 105 .gpio_nreset = -EINVAL, /* filled in later */ 106 }; 107 108 static struct spi_board_info edb93xx_spi_board_info[] __initdata = { 109 { 110 .modalias = "cs4271", 111 .platform_data = &edb93xx_cs4271_data, 112 .max_speed_hz = 6000000, 113 .bus_num = 0, 114 .chip_select = 0, 115 .mode = SPI_MODE_3, 116 }, 117 }; 118 119 static int edb93xx_spi_chipselects[] __initdata = { 120 EP93XX_GPIO_LINE_EGPIO6, 121 }; 122 123 static struct ep93xx_spi_info edb93xx_spi_info __initdata = { 124 .chipselect = edb93xx_spi_chipselects, 125 .num_chipselect = ARRAY_SIZE(edb93xx_spi_chipselects), 126 }; 127 128 static void __init edb93xx_register_spi(void) 129 { 130 if (machine_is_edb9301() || machine_is_edb9302()) 131 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1; 132 else if (machine_is_edb9302a() || machine_is_edb9307a()) 133 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2); 134 else if (machine_is_edb9315a()) 135 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14; 136 137 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info, 138 ARRAY_SIZE(edb93xx_spi_board_info)); 139 } 140 141 142 /************************************************************************* 143 * EDB93xx I2S 144 *************************************************************************/ 145 static struct platform_device edb93xx_audio_device = { 146 .name = "edb93xx-audio", 147 .id = -1, 148 }; 149 150 static int __init edb93xx_has_audio(void) 151 { 152 return (machine_is_edb9301() || machine_is_edb9302() || 153 machine_is_edb9302a() || machine_is_edb9307a() || 154 machine_is_edb9315a()); 155 } 156 157 static void __init edb93xx_register_i2s(void) 158 { 159 if (edb93xx_has_audio()) { 160 ep93xx_register_i2s(); 161 platform_device_register(&edb93xx_audio_device); 162 } 163 } 164 165 166 /************************************************************************* 167 * EDB93xx pwm 168 *************************************************************************/ 169 static void __init edb93xx_register_pwm(void) 170 { 171 if (machine_is_edb9301() || 172 machine_is_edb9302() || machine_is_edb9302a()) { 173 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */ 174 ep93xx_register_pwm(0, 1); 175 } else if (machine_is_edb9307() || machine_is_edb9307a()) { 176 /* EP9307 only has pwm.0 (PWMOUT) */ 177 ep93xx_register_pwm(1, 0); 178 } else { 179 /* EP9312 and EP9315 have both */ 180 ep93xx_register_pwm(1, 1); 181 } 182 } 183 184 185 /************************************************************************* 186 * EDB93xx framebuffer 187 *************************************************************************/ 188 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = { 189 .flags = 0, 190 }; 191 192 static int __init edb93xx_has_fb(void) 193 { 194 /* These platforms have an ep93xx with video capability */ 195 return machine_is_edb9307() || machine_is_edb9307a() || 196 machine_is_edb9312() || machine_is_edb9315() || 197 machine_is_edb9315a(); 198 } 199 200 static void __init edb93xx_register_fb(void) 201 { 202 if (!edb93xx_has_fb()) 203 return; 204 205 if (machine_is_edb9307a() || machine_is_edb9315a()) 206 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0; 207 else 208 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3; 209 210 ep93xx_register_fb(&edb93xxfb_info); 211 } 212 213 214 /************************************************************************* 215 * EDB93xx IDE 216 *************************************************************************/ 217 static int __init edb93xx_has_ide(void) 218 { 219 /* 220 * Although EDB9312 and EDB9315 do have IDE capability, they have 221 * INTRQ line wired as pull-up, which makes using IDE interface 222 * problematic. 223 */ 224 return machine_is_edb9312() || machine_is_edb9315() || 225 machine_is_edb9315a(); 226 } 227 228 static void __init edb93xx_register_ide(void) 229 { 230 if (!edb93xx_has_ide()) 231 return; 232 233 ep93xx_register_ide(); 234 } 235 236 237 static void __init edb93xx_init_machine(void) 238 { 239 ep93xx_init_devices(); 240 edb93xx_register_flash(); 241 ep93xx_register_eth(&edb93xx_eth_data, 1); 242 edb93xx_register_i2c(); 243 edb93xx_register_spi(); 244 edb93xx_register_i2s(); 245 edb93xx_register_pwm(); 246 edb93xx_register_fb(); 247 edb93xx_register_ide(); 248 } 249 250 251 #ifdef CONFIG_MACH_EDB9301 252 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board") 253 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 254 .atag_offset = 0x100, 255 .map_io = ep93xx_map_io, 256 .init_irq = ep93xx_init_irq, 257 .init_time = ep93xx_timer_init, 258 .init_machine = edb93xx_init_machine, 259 .init_late = ep93xx_init_late, 260 .restart = ep93xx_restart, 261 MACHINE_END 262 #endif 263 264 #ifdef CONFIG_MACH_EDB9302 265 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board") 266 /* Maintainer: George Kashperko <george@chas.com.ua> */ 267 .atag_offset = 0x100, 268 .map_io = ep93xx_map_io, 269 .init_irq = ep93xx_init_irq, 270 .init_time = ep93xx_timer_init, 271 .init_machine = edb93xx_init_machine, 272 .init_late = ep93xx_init_late, 273 .restart = ep93xx_restart, 274 MACHINE_END 275 #endif 276 277 #ifdef CONFIG_MACH_EDB9302A 278 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board") 279 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 280 .atag_offset = 0x100, 281 .map_io = ep93xx_map_io, 282 .init_irq = ep93xx_init_irq, 283 .init_time = ep93xx_timer_init, 284 .init_machine = edb93xx_init_machine, 285 .init_late = ep93xx_init_late, 286 .restart = ep93xx_restart, 287 MACHINE_END 288 #endif 289 290 #ifdef CONFIG_MACH_EDB9307 291 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board") 292 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */ 293 .atag_offset = 0x100, 294 .map_io = ep93xx_map_io, 295 .init_irq = ep93xx_init_irq, 296 .init_time = ep93xx_timer_init, 297 .init_machine = edb93xx_init_machine, 298 .init_late = ep93xx_init_late, 299 .restart = ep93xx_restart, 300 MACHINE_END 301 #endif 302 303 #ifdef CONFIG_MACH_EDB9307A 304 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board") 305 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 306 .atag_offset = 0x100, 307 .map_io = ep93xx_map_io, 308 .init_irq = ep93xx_init_irq, 309 .init_time = ep93xx_timer_init, 310 .init_machine = edb93xx_init_machine, 311 .init_late = ep93xx_init_late, 312 .restart = ep93xx_restart, 313 MACHINE_END 314 #endif 315 316 #ifdef CONFIG_MACH_EDB9312 317 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board") 318 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */ 319 .atag_offset = 0x100, 320 .map_io = ep93xx_map_io, 321 .init_irq = ep93xx_init_irq, 322 .init_time = ep93xx_timer_init, 323 .init_machine = edb93xx_init_machine, 324 .init_late = ep93xx_init_late, 325 .restart = ep93xx_restart, 326 MACHINE_END 327 #endif 328 329 #ifdef CONFIG_MACH_EDB9315 330 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board") 331 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 332 .atag_offset = 0x100, 333 .map_io = ep93xx_map_io, 334 .init_irq = ep93xx_init_irq, 335 .init_time = ep93xx_timer_init, 336 .init_machine = edb93xx_init_machine, 337 .init_late = ep93xx_init_late, 338 .restart = ep93xx_restart, 339 MACHINE_END 340 #endif 341 342 #ifdef CONFIG_MACH_EDB9315A 343 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board") 344 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 345 .atag_offset = 0x100, 346 .map_io = ep93xx_map_io, 347 .init_irq = ep93xx_init_irq, 348 .init_time = ep93xx_timer_init, 349 .init_machine = edb93xx_init_machine, 350 .init_late = ep93xx_init_late, 351 .restart = ep93xx_restart, 352 MACHINE_END 353 #endif 354