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 <mach/fb.h> 39 #include <mach/ep93xx_spi.h> 40 #include <mach/gpio-ep93xx.h> 41 42 #include <asm/hardware/vic.h> 43 #include <asm/mach-types.h> 44 #include <asm/mach/arch.h> 45 46 #include "soc.h" 47 48 static void __init edb93xx_register_flash(void) 49 { 50 if (machine_is_edb9307() || machine_is_edb9312() || 51 machine_is_edb9315()) { 52 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M); 53 } else { 54 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M); 55 } 56 } 57 58 static struct ep93xx_eth_data __initdata edb93xx_eth_data = { 59 .phy_id = 1, 60 }; 61 62 63 /************************************************************************* 64 * EDB93xx i2c peripheral handling 65 *************************************************************************/ 66 static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = { 67 .sda_pin = EP93XX_GPIO_LINE_EEDAT, 68 .sda_is_open_drain = 0, 69 .scl_pin = EP93XX_GPIO_LINE_EECLK, 70 .scl_is_open_drain = 0, 71 .udelay = 0, /* default to 100 kHz */ 72 .timeout = 0, /* default to 100 ms */ 73 }; 74 75 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = { 76 { 77 I2C_BOARD_INFO("isl1208", 0x6f), 78 }, 79 }; 80 81 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = { 82 { 83 I2C_BOARD_INFO("ds1337", 0x68), 84 }, 85 }; 86 87 static void __init edb93xx_register_i2c(void) 88 { 89 if (machine_is_edb9302a() || machine_is_edb9307a() || 90 machine_is_edb9315a()) { 91 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 92 edb93xxa_i2c_board_info, 93 ARRAY_SIZE(edb93xxa_i2c_board_info)); 94 } else if (machine_is_edb9307() || machine_is_edb9312() || 95 machine_is_edb9315()) { 96 ep93xx_register_i2c(&edb93xx_i2c_gpio_data, 97 edb93xx_i2c_board_info, 98 ARRAY_SIZE(edb93xx_i2c_board_info)); 99 } 100 } 101 102 103 /************************************************************************* 104 * EDB93xx SPI peripheral handling 105 *************************************************************************/ 106 static struct cs4271_platform_data edb93xx_cs4271_data = { 107 .gpio_nreset = -EINVAL, /* filled in later */ 108 }; 109 110 static int edb93xx_cs4271_hw_setup(struct spi_device *spi) 111 { 112 return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6, 113 GPIOF_OUT_INIT_HIGH, spi->modalias); 114 } 115 116 static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi) 117 { 118 gpio_free(EP93XX_GPIO_LINE_EGPIO6); 119 } 120 121 static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value) 122 { 123 gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value); 124 } 125 126 static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = { 127 .setup = edb93xx_cs4271_hw_setup, 128 .cleanup = edb93xx_cs4271_hw_cleanup, 129 .cs_control = edb93xx_cs4271_hw_cs_control, 130 }; 131 132 static struct spi_board_info edb93xx_spi_board_info[] __initdata = { 133 { 134 .modalias = "cs4271", 135 .platform_data = &edb93xx_cs4271_data, 136 .controller_data = &edb93xx_cs4271_hw, 137 .max_speed_hz = 6000000, 138 .bus_num = 0, 139 .chip_select = 0, 140 .mode = SPI_MODE_3, 141 }, 142 }; 143 144 static struct ep93xx_spi_info edb93xx_spi_info __initdata = { 145 .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info), 146 }; 147 148 static void __init edb93xx_register_spi(void) 149 { 150 if (machine_is_edb9301() || machine_is_edb9302()) 151 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1; 152 else if (machine_is_edb9302a() || machine_is_edb9307a()) 153 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2); 154 else if (machine_is_edb9315a()) 155 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14; 156 157 ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info, 158 ARRAY_SIZE(edb93xx_spi_board_info)); 159 } 160 161 162 /************************************************************************* 163 * EDB93xx I2S 164 *************************************************************************/ 165 static struct platform_device edb93xx_audio_device = { 166 .name = "edb93xx-audio", 167 .id = -1, 168 }; 169 170 static int __init edb93xx_has_audio(void) 171 { 172 return (machine_is_edb9301() || machine_is_edb9302() || 173 machine_is_edb9302a() || machine_is_edb9307a() || 174 machine_is_edb9315a()); 175 } 176 177 static void __init edb93xx_register_i2s(void) 178 { 179 if (edb93xx_has_audio()) { 180 ep93xx_register_i2s(); 181 platform_device_register(&edb93xx_audio_device); 182 } 183 } 184 185 186 /************************************************************************* 187 * EDB93xx pwm 188 *************************************************************************/ 189 static void __init edb93xx_register_pwm(void) 190 { 191 if (machine_is_edb9301() || 192 machine_is_edb9302() || machine_is_edb9302a()) { 193 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */ 194 ep93xx_register_pwm(0, 1); 195 } else if (machine_is_edb9307() || machine_is_edb9307a()) { 196 /* EP9307 only has pwm.0 (PWMOUT) */ 197 ep93xx_register_pwm(1, 0); 198 } else { 199 /* EP9312 and EP9315 have both */ 200 ep93xx_register_pwm(1, 1); 201 } 202 } 203 204 205 /************************************************************************* 206 * EDB93xx framebuffer 207 *************************************************************************/ 208 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = { 209 .num_modes = EP93XXFB_USE_MODEDB, 210 .bpp = 16, 211 .flags = 0, 212 }; 213 214 static int __init edb93xx_has_fb(void) 215 { 216 /* These platforms have an ep93xx with video capability */ 217 return machine_is_edb9307() || machine_is_edb9307a() || 218 machine_is_edb9312() || machine_is_edb9315() || 219 machine_is_edb9315a(); 220 } 221 222 static void __init edb93xx_register_fb(void) 223 { 224 if (!edb93xx_has_fb()) 225 return; 226 227 if (machine_is_edb9307a() || machine_is_edb9315a()) 228 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0; 229 else 230 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3; 231 232 ep93xx_register_fb(&edb93xxfb_info); 233 } 234 235 236 static void __init edb93xx_init_machine(void) 237 { 238 ep93xx_init_devices(); 239 edb93xx_register_flash(); 240 ep93xx_register_eth(&edb93xx_eth_data, 1); 241 edb93xx_register_i2c(); 242 edb93xx_register_spi(); 243 edb93xx_register_i2s(); 244 edb93xx_register_pwm(); 245 edb93xx_register_fb(); 246 } 247 248 249 #ifdef CONFIG_MACH_EDB9301 250 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board") 251 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 252 .atag_offset = 0x100, 253 .map_io = ep93xx_map_io, 254 .init_irq = ep93xx_init_irq, 255 .handle_irq = vic_handle_irq, 256 .timer = &ep93xx_timer, 257 .init_machine = edb93xx_init_machine, 258 .restart = ep93xx_restart, 259 MACHINE_END 260 #endif 261 262 #ifdef CONFIG_MACH_EDB9302 263 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board") 264 /* Maintainer: George Kashperko <george@chas.com.ua> */ 265 .atag_offset = 0x100, 266 .map_io = ep93xx_map_io, 267 .init_irq = ep93xx_init_irq, 268 .handle_irq = vic_handle_irq, 269 .timer = &ep93xx_timer, 270 .init_machine = edb93xx_init_machine, 271 .restart = ep93xx_restart, 272 MACHINE_END 273 #endif 274 275 #ifdef CONFIG_MACH_EDB9302A 276 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board") 277 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 278 .atag_offset = 0x100, 279 .map_io = ep93xx_map_io, 280 .init_irq = ep93xx_init_irq, 281 .handle_irq = vic_handle_irq, 282 .timer = &ep93xx_timer, 283 .init_machine = edb93xx_init_machine, 284 .restart = ep93xx_restart, 285 MACHINE_END 286 #endif 287 288 #ifdef CONFIG_MACH_EDB9307 289 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board") 290 /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */ 291 .atag_offset = 0x100, 292 .map_io = ep93xx_map_io, 293 .init_irq = ep93xx_init_irq, 294 .handle_irq = vic_handle_irq, 295 .timer = &ep93xx_timer, 296 .init_machine = edb93xx_init_machine, 297 .restart = ep93xx_restart, 298 MACHINE_END 299 #endif 300 301 #ifdef CONFIG_MACH_EDB9307A 302 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board") 303 /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */ 304 .atag_offset = 0x100, 305 .map_io = ep93xx_map_io, 306 .init_irq = ep93xx_init_irq, 307 .handle_irq = vic_handle_irq, 308 .timer = &ep93xx_timer, 309 .init_machine = edb93xx_init_machine, 310 .restart = ep93xx_restart, 311 MACHINE_END 312 #endif 313 314 #ifdef CONFIG_MACH_EDB9312 315 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board") 316 /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */ 317 .atag_offset = 0x100, 318 .map_io = ep93xx_map_io, 319 .init_irq = ep93xx_init_irq, 320 .handle_irq = vic_handle_irq, 321 .timer = &ep93xx_timer, 322 .init_machine = edb93xx_init_machine, 323 .restart = ep93xx_restart, 324 MACHINE_END 325 #endif 326 327 #ifdef CONFIG_MACH_EDB9315 328 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board") 329 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 330 .atag_offset = 0x100, 331 .map_io = ep93xx_map_io, 332 .init_irq = ep93xx_init_irq, 333 .handle_irq = vic_handle_irq, 334 .timer = &ep93xx_timer, 335 .init_machine = edb93xx_init_machine, 336 .restart = ep93xx_restart, 337 MACHINE_END 338 #endif 339 340 #ifdef CONFIG_MACH_EDB9315A 341 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board") 342 /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */ 343 .atag_offset = 0x100, 344 .map_io = ep93xx_map_io, 345 .init_irq = ep93xx_init_irq, 346 .handle_irq = vic_handle_irq, 347 .timer = &ep93xx_timer, 348 .init_machine = edb93xx_init_machine, 349 .restart = ep93xx_restart, 350 MACHINE_END 351 #endif 352