arch/arm/mach-ep93xx/edb93xx.c

   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         ep93xx_register_adc();
 249 }
 250
 251
 252 #ifdef CONFIG_MACH_EDB9301
 253 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
 254         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 255         .atag_offset    = 0x100,
 256         .map_io         = ep93xx_map_io,
 257         .init_irq       = ep93xx_init_irq,
 258         .init_time      = ep93xx_timer_init,
 259         .init_machine   = edb93xx_init_machine,
 260         .init_late      = ep93xx_init_late,
 261         .restart        = ep93xx_restart,
 262 MACHINE_END
 263 #endif
 264
 265 #ifdef CONFIG_MACH_EDB9302
 266 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
 267         /* Maintainer: George Kashperko <george@chas.com.ua> */
 268         .atag_offset    = 0x100,
 269         .map_io         = ep93xx_map_io,
 270         .init_irq       = ep93xx_init_irq,
 271         .init_time      = ep93xx_timer_init,
 272         .init_machine   = edb93xx_init_machine,
 273         .init_late      = ep93xx_init_late,
 274         .restart        = ep93xx_restart,
 275 MACHINE_END
 276 #endif
 277
 278 #ifdef CONFIG_MACH_EDB9302A
 279 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
 280         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 281         .atag_offset    = 0x100,
 282         .map_io         = ep93xx_map_io,
 283         .init_irq       = ep93xx_init_irq,
 284         .init_time      = ep93xx_timer_init,
 285         .init_machine   = edb93xx_init_machine,
 286         .init_late      = ep93xx_init_late,
 287         .restart        = ep93xx_restart,
 288 MACHINE_END
 289 #endif
 290
 291 #ifdef CONFIG_MACH_EDB9307
 292 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
 293         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 294         .atag_offset    = 0x100,
 295         .map_io         = ep93xx_map_io,
 296         .init_irq       = ep93xx_init_irq,
 297         .init_time      = ep93xx_timer_init,
 298         .init_machine   = edb93xx_init_machine,
 299         .init_late      = ep93xx_init_late,
 300         .restart        = ep93xx_restart,
 301 MACHINE_END
 302 #endif
 303
 304 #ifdef CONFIG_MACH_EDB9307A
 305 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
 306         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 307         .atag_offset    = 0x100,
 308         .map_io         = ep93xx_map_io,
 309         .init_irq       = ep93xx_init_irq,
 310         .init_time      = ep93xx_timer_init,
 311         .init_machine   = edb93xx_init_machine,
 312         .init_late      = ep93xx_init_late,
 313         .restart        = ep93xx_restart,
 314 MACHINE_END
 315 #endif
 316
 317 #ifdef CONFIG_MACH_EDB9312
 318 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
 319         /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
 320         .atag_offset    = 0x100,
 321         .map_io         = ep93xx_map_io,
 322         .init_irq       = ep93xx_init_irq,
 323         .init_time      = ep93xx_timer_init,
 324         .init_machine   = edb93xx_init_machine,
 325         .init_late      = ep93xx_init_late,
 326         .restart        = ep93xx_restart,
 327 MACHINE_END
 328 #endif
 329
 330 #ifdef CONFIG_MACH_EDB9315
 331 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
 332         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 333         .atag_offset    = 0x100,
 334         .map_io         = ep93xx_map_io,
 335         .init_irq       = ep93xx_init_irq,
 336         .init_time      = ep93xx_timer_init,
 337         .init_machine   = edb93xx_init_machine,
 338         .init_late      = ep93xx_init_late,
 339         .restart        = ep93xx_restart,
 340 MACHINE_END
 341 #endif
 342
 343 #ifdef CONFIG_MACH_EDB9315A
 344 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
 345         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 346         .atag_offset    = 0x100,
 347         .map_io         = ep93xx_map_io,
 348         .init_irq       = ep93xx_init_irq,
 349         .init_time      = ep93xx_timer_init,
 350         .init_machine   = edb93xx_init_machine,
 351         .init_late      = ep93xx_init_late,
 352         .restart        = ep93xx_restart,
 353 MACHINE_END
 354 #endif