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/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