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/spi/spi.h> 32 #include <linux/gpio/machine.h> 33 34 #include <sound/cs4271.h> 35 36 #include "hardware.h" 37 #include <linux/platform_data/video-ep93xx.h> 38 #include <linux/platform_data/spi-ep93xx.h> 39 #include "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 65 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = { 66 { 67 I2C_BOARD_INFO("isl1208", 0x6f), 68 }, 69 }; 70 71 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = { 72 { 73 I2C_BOARD_INFO("ds1337", 0x68), 74 }, 75 }; 76 77 static void __init edb93xx_register_i2c(void) 78 { 79 if (machine_is_edb9302a() || machine_is_edb9307a() || 80 machine_is_edb9315a()) { 81 ep93xx_register_i2c(edb93xxa_i2c_board_info, 82 ARRAY_SIZE(edb93xxa_i2c_board_info)); 83 } else if (machine_is_edb9302() || machine_is_edb9307() 84 || machine_is_edb9312() || machine_is_edb9315()) { 85 ep93xx_register_i2c(edb93xx_i2c_board_info, 86 ARRAY_SIZE(edb93xx_i2c_board_info)); 87 } 88 } 89 90 91 /************************************************************************* 92 * EDB93xx SPI peripheral handling 93 *************************************************************************/ 94 static struct cs4271_platform_data edb93xx_cs4271_data = { 95 .gpio_nreset = -EINVAL, /* filled in later */ 96 }; 97 98 static struct spi_board_info edb93xx_spi_board_info[] __initdata = { 99 { 100 .modalias = "cs4271", 101 .platform_data = &edb93xx_cs4271_data, 102 .max_speed_hz = 6000000, 103 .bus_num = 0, 104 .chip_select = 0, 105 .mode = SPI_MODE_3, 106 }, 107 }; 108 109 static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = { 110 .dev_id = "ep93xx-spi.0", 111 .table = { 112 GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW), 113 { }, 114 }, 115 }; 116 117 static struct ep93xx_spi_info edb93xx_spi_info __initdata = { 118 /* Intentionally left blank */ 119 }; 120 121 static void __init edb93xx_register_spi(void) 122 { 123 if (machine_is_edb9301() || machine_is_edb9302()) 124 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1; 125 else if (machine_is_edb9302a() || machine_is_edb9307a()) 126 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2); 127 else if (machine_is_edb9315a()) 128 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14; 129 130 gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table); 131 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info, 132 ARRAY_SIZE(edb93xx_spi_board_info)); 133 } 134 135 136 /************************************************************************* 137 * EDB93xx I2S 138 *************************************************************************/ 139 static struct platform_device edb93xx_audio_device = { 140 .name = "edb93xx-audio", 141 .id = -1, 142 }; 143 144 static int __init edb93xx_has_audio(void) 145 { 146 return (machine_is_edb9301() || machine_is_edb9302() || 147 machine_is_edb9302a() || machine_is_edb9307a() || 148 machine_is_edb9315a()); 149 } 150 151 static void __init edb93xx_register_i2s(void) 152 { 153 if (edb93xx_has_audio()) { 154 ep93xx_register_i2s(); 155 platform_device_register(&edb93xx_audio_device); 156 } 157 } 158 159 160 /************************************************************************* 161 * EDB93xx pwm 162 *************************************************************************/ 163 static void __init edb93xx_register_pwm(void) 164 { 165 if (machine_is_edb9301() || 166 machine_is_edb9302() || machine_is_edb9302a()) { 167 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */ 168 ep93xx_register_pwm(0, 1); 169 } else if (machine_is_edb9307() || machine_is_edb9307a()) { 170 /* EP9307 only has pwm.0 (PWMOUT) */ 171 ep93xx_register_pwm(1, 0); 172 } else { 173 /* EP9312 and EP9315 have both */ 174 ep93xx_register_pwm(1, 1); 175 } 176 } 177 178 179 /************************************************************************* 180 * EDB93xx framebuffer 181 *************************************************************************/ 182 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = { 183 .flags = 0, 184 }; 185 186 static int __init edb93xx_has_fb(void) 187 { 188 /* These platforms have an ep93xx with video capability */ 189 return machine_is_edb9307() || machine_is_edb9307a() || 190 machine_is_edb9312() || machine_is_edb9315() || 191 machine_is_edb9315a(); 192 } 193 194 static void __init edb93xx_register_fb(void) 195 { 196 if (!edb93xx_has_fb()) 197 return; 198 199 if (machine_is_edb9307a() || machine_is_edb9315a()) 200 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0; 201 else 202 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3; 203 204 ep93xx_register_fb(&edb93xxfb_info); 205 } 206 207 208 /************************************************************************* 209 * EDB93xx IDE 210 *************************************************************************/ 211 static int __init edb93xx_has_ide(void) 212 { 213 /* 214 * Although EDB9312 and EDB9315 do have IDE capability, they have 215 * INTRQ line wired as pull-up, which makes using IDE interface 216 * problematic. 217 */ 218 return machine_is_edb9312() || machine_is_edb9315() || 219 machine_is_edb9315a(); 220 } 221 222 static void __init edb93xx_register_ide(void) 223 { 224 if (!edb93xx_has_ide()) 225 return; 226 227 ep93xx_register_ide(); 228 } 229 230 231 static void __init edb93xx_init_machine(void) 232 { 233 ep93xx_init_devices(); 234 edb93xx_register_flash(); 235 ep93xx_register_eth(&edb93xx_eth_data, 1); 236 edb93xx_register_i2c(); 237 edb93xx_register_spi(); 238 edb93xx_register_i2s(); 239 edb93xx_register_pwm(); 240 edb93xx_register_fb(); 241 edb93xx_register_ide(); 242 ep93xx_register_adc(); 243 } 244 245 246 #ifdef CONFIG_MACH_EDB9301 247 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board") 248 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 249 .atag_offset = 0x100, 250 .map_io = ep93xx_map_io, 251 .init_irq = ep93xx_init_irq, 252 .init_time = ep93xx_timer_init, 253 .init_machine = edb93xx_init_machine, 254 .init_late = ep93xx_init_late, 255 .restart = ep93xx_restart, 256 MACHINE_END 257 #endif 258 259 #ifdef CONFIG_MACH_EDB9302 260 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board") 261 /* Maintainer: George Kashperko <george@chas.com.ua> */ 262 .atag_offset = 0x100, 263 .map_io = ep93xx_map_io, 264 .init_irq = ep93xx_init_irq, 265 .init_time = ep93xx_timer_init, 266 .init_machine = edb93xx_init_machine, 267 .init_late = ep93xx_init_late, 268 .restart = ep93xx_restart, 269 MACHINE_END 270 #endif 271 272 #ifdef CONFIG_MACH_EDB9302A 273 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board") 274 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 275 .atag_offset = 0x100, 276 .map_io = ep93xx_map_io, 277 .init_irq = ep93xx_init_irq, 278 .init_time = ep93xx_timer_init, 279 .init_machine = edb93xx_init_machine, 280 .init_late = ep93xx_init_late, 281 .restart = ep93xx_restart, 282 MACHINE_END 283 #endif 284 285 #ifdef CONFIG_MACH_EDB9307 286 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board") 287 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */ 288 .atag_offset = 0x100, 289 .map_io = ep93xx_map_io, 290 .init_irq = ep93xx_init_irq, 291 .init_time = ep93xx_timer_init, 292 .init_machine = edb93xx_init_machine, 293 .init_late = ep93xx_init_late, 294 .restart = ep93xx_restart, 295 MACHINE_END 296 #endif 297 298 #ifdef CONFIG_MACH_EDB9307A 299 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board") 300 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 301 .atag_offset = 0x100, 302 .map_io = ep93xx_map_io, 303 .init_irq = ep93xx_init_irq, 304 .init_time = ep93xx_timer_init, 305 .init_machine = edb93xx_init_machine, 306 .init_late = ep93xx_init_late, 307 .restart = ep93xx_restart, 308 MACHINE_END 309 #endif 310 311 #ifdef CONFIG_MACH_EDB9312 312 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board") 313 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */ 314 .atag_offset = 0x100, 315 .map_io = ep93xx_map_io, 316 .init_irq = ep93xx_init_irq, 317 .init_time = ep93xx_timer_init, 318 .init_machine = edb93xx_init_machine, 319 .init_late = ep93xx_init_late, 320 .restart = ep93xx_restart, 321 MACHINE_END 322 #endif 323 324 #ifdef CONFIG_MACH_EDB9315 325 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board") 326 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 327 .atag_offset = 0x100, 328 .map_io = ep93xx_map_io, 329 .init_irq = ep93xx_init_irq, 330 .init_time = ep93xx_timer_init, 331 .init_machine = edb93xx_init_machine, 332 .init_late = ep93xx_init_late, 333 .restart = ep93xx_restart, 334 MACHINE_END 335 #endif 336 337 #ifdef CONFIG_MACH_EDB9315A 338 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board") 339 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 340 .atag_offset = 0x100, 341 .map_io = ep93xx_map_io, 342 .init_irq = ep93xx_init_irq, 343 .init_time = ep93xx_timer_init, 344 .init_machine = edb93xx_init_machine, 345 .init_late = ep93xx_init_late, 346 .restart = ep93xx_restart, 347 MACHINE_END 348 #endif 349