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/gpio.h> 31 #include <linux/i2c.h> 32 #include <linux/i2c-gpio.h> 33 #include <linux/spi/spi.h> 34 35 #include <sound/cs4271.h> 36 37 #include <mach/hardware.h> 38 #include <linux/platform_data/video-ep93xx.h> 39 #include <linux/platform_data/spi-ep93xx.h> 40 #include <mach/gpio-ep93xx.h> 41 42 #include <asm/mach-types.h> 43 #include <asm/mach/arch.h> 44 45 #include "soc.h" 46 47 static void __init edb93xx_register_flash(void) 48 { 49 if (machine_is_edb9307() || machine_is_edb9312() || 50 machine_is_edb9315()) { 51 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M); 52 } else { 53 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); 54 } 55 } 56 57 static struct ep93xx_eth_data __initdata edb93xx_eth_data = { 58 .phy_id = 1, 59 }; 60 61 62 /************************************************************************* 63 * EDB93xx i2c peripheral handling 64 *************************************************************************/ 65 static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = { 66 .sda_pin = EP93XX_GPIO_LINE_EEDAT, 67 .sda_is_open_drain = 0, 68 .scl_pin = EP93XX_GPIO_LINE_EECLK, 69 .scl_is_open_drain = 0, 70 .udelay = 0, /* default to 100 kHz */ 71 .timeout = 0, /* default to 100 ms */ 72 }; 73 74 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = { 75 { 76 I2C_BOARD_INFO("isl1208", 0x6f), 77 }, 78 }; 79 80 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = { 81 { 82 I2C_BOARD_INFO("ds1337", 0x68), 83 }, 84 }; 85 86 static void __init edb93xx_register_i2c(void) 87 { 88 if (machine_is_edb9302a() || machine_is_edb9307a() || 89 machine_is_edb9315a()) { 90 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 91 edb93xxa_i2c_board_info, 92 ARRAY_SIZE(edb93xxa_i2c_board_info)); 93 } else if (machine_is_edb9302() || machine_is_edb9307() 94 || machine_is_edb9312() || machine_is_edb9315()) { 95 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 96 edb93xx_i2c_board_info, 97 ARRAY_SIZE(edb93xx_i2c_board_info)); 98 } 99 } 100 101 102 /************************************************************************* 103 * EDB93xx SPI peripheral handling 104 *************************************************************************/ 105 static struct cs4271_platform_data edb93xx_cs4271_data = { 106 .gpio_nreset = -EINVAL, /* filled in later */ 107 }; 108 109 static int edb93xx_cs4271_hw_setup(struct spi_device *spi) 110 { 111 return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6, 112 GPIOF_OUT_INIT_HIGH, spi->modalias); 113 } 114 115 static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi) 116 { 117 gpio_free(EP93XX_GPIO_LINE_EGPIO6); 118 } 119 120 static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value) 121 { 122 gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value); 123 } 124 125 static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = { 126 .setup = edb93xx_cs4271_hw_setup, 127 .cleanup = edb93xx_cs4271_hw_cleanup, 128 .cs_control = edb93xx_cs4271_hw_cs_control, 129 }; 130 131 static struct spi_board_info edb93xx_spi_board_info[] __initdata = { 132 { 133 .modalias = "cs4271", 134 .platform_data = &edb93xx_cs4271_data, 135 .controller_data = &edb93xx_cs4271_hw, 136 .max_speed_hz = 6000000, 137 .bus_num = 0, 138 .chip_select = 0, 139 .mode = SPI_MODE_3, 140 }, 141 }; 142 143 static struct ep93xx_spi_info edb93xx_spi_info __initdata = { 144 .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info), 145 }; 146 147 static void __init edb93xx_register_spi(void) 148 { 149 if (machine_is_edb9301() || machine_is_edb9302()) 150 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1; 151 else if (machine_is_edb9302a() || machine_is_edb9307a()) 152 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2); 153 else if (machine_is_edb9315a()) 154 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14; 155 156 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info, 157 ARRAY_SIZE(edb93xx_spi_board_info)); 158 } 159 160 161 /************************************************************************* 162 * EDB93xx I2S 163 *************************************************************************/ 164 static struct platform_device edb93xx_audio_device = { 165 .name = "edb93xx-audio", 166 .id = -1, 167 }; 168 169 static int __init edb93xx_has_audio(void) 170 { 171 return (machine_is_edb9301() || machine_is_edb9302() || 172 machine_is_edb9302a() || machine_is_edb9307a() || 173 machine_is_edb9315a()); 174 } 175 176 static void __init edb93xx_register_i2s(void) 177 { 178 if (edb93xx_has_audio()) { 179 ep93xx_register_i2s(); 180 platform_device_register(&edb93xx_audio_device); 181 } 182 } 183 184 185 /************************************************************************* 186 * EDB93xx pwm 187 *************************************************************************/ 188 static void __init edb93xx_register_pwm(void) 189 { 190 if (machine_is_edb9301() || 191 machine_is_edb9302() || machine_is_edb9302a()) { 192 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */ 193 ep93xx_register_pwm(0, 1); 194 } else if (machine_is_edb9307() || machine_is_edb9307a()) { 195 /* EP9307 only has pwm.0 (PWMOUT) */ 196 ep93xx_register_pwm(1, 0); 197 } else { 198 /* EP9312 and EP9315 have both */ 199 ep93xx_register_pwm(1, 1); 200 } 201 } 202 203 204 /************************************************************************* 205 * EDB93xx framebuffer 206 *************************************************************************/ 207 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = { 208 .flags = 0, 209 }; 210 211 static int __init edb93xx_has_fb(void) 212 { 213 /* These platforms have an ep93xx with video capability */ 214 return machine_is_edb9307() || machine_is_edb9307a() || 215 machine_is_edb9312() || machine_is_edb9315() || 216 machine_is_edb9315a(); 217 } 218 219 static void __init edb93xx_register_fb(void) 220 { 221 if (!edb93xx_has_fb()) 222 return; 223 224 if (machine_is_edb9307a() || machine_is_edb9315a()) 225 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0; 226 else 227 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3; 228 229 ep93xx_register_fb(&edb93xxfb_info); 230 } 231 232 233 /************************************************************************* 234 * EDB93xx IDE 235 *************************************************************************/ 236 static int __init edb93xx_has_ide(void) 237 { 238 /* 239 * Although EDB9312 and EDB9315 do have IDE capability, they have 240 * INTRQ line wired as pull-up, which makes using IDE interface 241 * problematic. 242 */ 243 return machine_is_edb9312() || machine_is_edb9315() || 244 machine_is_edb9315a(); 245 } 246 247 static void __init edb93xx_register_ide(void) 248 { 249 if (!edb93xx_has_ide()) 250 return; 251 252 ep93xx_register_ide(); 253 } 254 255 256 static void __init edb93xx_init_machine(void) 257 { 258 ep93xx_init_devices(); 259 edb93xx_register_flash(); 260 ep93xx_register_eth(&edb93xx_eth_data, 1); 261 edb93xx_register_i2c(); 262 edb93xx_register_spi(); 263 edb93xx_register_i2s(); 264 edb93xx_register_pwm(); 265 edb93xx_register_fb(); 266 edb93xx_register_ide(); 267 } 268 269 270 #ifdef CONFIG_MACH_EDB9301 271 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board") 272 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 273 .atag_offset = 0x100, 274 .map_io = ep93xx_map_io, 275 .init_irq = ep93xx_init_irq, 276 .init_time = ep93xx_timer_init, 277 .init_machine = edb93xx_init_machine, 278 .init_late = ep93xx_init_late, 279 .restart = ep93xx_restart, 280 MACHINE_END 281 #endif 282 283 #ifdef CONFIG_MACH_EDB9302 284 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board") 285 /* Maintainer: George Kashperko <george@chas.com.ua> */ 286 .atag_offset = 0x100, 287 .map_io = ep93xx_map_io, 288 .init_irq = ep93xx_init_irq, 289 .init_time = ep93xx_timer_init, 290 .init_machine = edb93xx_init_machine, 291 .init_late = ep93xx_init_late, 292 .restart = ep93xx_restart, 293 MACHINE_END 294 #endif 295 296 #ifdef CONFIG_MACH_EDB9302A 297 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board") 298 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 299 .atag_offset = 0x100, 300 .map_io = ep93xx_map_io, 301 .init_irq = ep93xx_init_irq, 302 .init_time = ep93xx_timer_init, 303 .init_machine = edb93xx_init_machine, 304 .init_late = ep93xx_init_late, 305 .restart = ep93xx_restart, 306 MACHINE_END 307 #endif 308 309 #ifdef CONFIG_MACH_EDB9307 310 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board") 311 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */ 312 .atag_offset = 0x100, 313 .map_io = ep93xx_map_io, 314 .init_irq = ep93xx_init_irq, 315 .init_time = ep93xx_timer_init, 316 .init_machine = edb93xx_init_machine, 317 .init_late = ep93xx_init_late, 318 .restart = ep93xx_restart, 319 MACHINE_END 320 #endif 321 322 #ifdef CONFIG_MACH_EDB9307A 323 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board") 324 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 325 .atag_offset = 0x100, 326 .map_io = ep93xx_map_io, 327 .init_irq = ep93xx_init_irq, 328 .init_time = ep93xx_timer_init, 329 .init_machine = edb93xx_init_machine, 330 .init_late = ep93xx_init_late, 331 .restart = ep93xx_restart, 332 MACHINE_END 333 #endif 334 335 #ifdef CONFIG_MACH_EDB9312 336 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board") 337 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */ 338 .atag_offset = 0x100, 339 .map_io = ep93xx_map_io, 340 .init_irq = ep93xx_init_irq, 341 .init_time = ep93xx_timer_init, 342 .init_machine = edb93xx_init_machine, 343 .init_late = ep93xx_init_late, 344 .restart = ep93xx_restart, 345 MACHINE_END 346 #endif 347 348 #ifdef CONFIG_MACH_EDB9315 349 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board") 350 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 351 .atag_offset = 0x100, 352 .map_io = ep93xx_map_io, 353 .init_irq = ep93xx_init_irq, 354 .init_time = ep93xx_timer_init, 355 .init_machine = edb93xx_init_machine, 356 .init_late = ep93xx_init_late, 357 .restart = ep93xx_restart, 358 MACHINE_END 359 #endif 360 361 #ifdef CONFIG_MACH_EDB9315A 362 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board") 363 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 364 .atag_offset = 0x100, 365 .map_io = ep93xx_map_io, 366 .init_irq = ep93xx_init_irq, 367 .init_time = ep93xx_timer_init, 368 .init_machine = edb93xx_init_machine, 369 .init_late = ep93xx_init_late, 370 .restart = ep93xx_restart, 371 MACHINE_END 372 #endif 373