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 <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_edb9302() || machine_is_edb9307()
  95                 || machine_is_edb9312() || 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 /*************************************************************************
 237  * EDB93xx IDE
 238  *************************************************************************/
 239 static int __init edb93xx_has_ide(void)
 240 {
 241         /*
 242          * Although EDB9312 and EDB9315 do have IDE capability, they have
 243          * INTRQ line wired as pull-up, which makes using IDE interface
 244          * problematic.
 245          */
 246         return machine_is_edb9312() || machine_is_edb9315() ||
 247                machine_is_edb9315a();
 248 }
 249
 250 static void __init edb93xx_register_ide(void)
 251 {
 252         if (!edb93xx_has_ide())
 253                 return;
 254
 255         ep93xx_register_ide();
 256 }
 257
 258
 259 static void __init edb93xx_init_machine(void)
 260 {
 261         ep93xx_init_devices();
 262         edb93xx_register_flash();
 263         ep93xx_register_eth(&edb93xx_eth_data, 1);
 264         edb93xx_register_i2c();
 265         edb93xx_register_spi();
 266         edb93xx_register_i2s();
 267         edb93xx_register_pwm();
 268         edb93xx_register_fb();
 269         edb93xx_register_ide();
 270 }
 271
 272
 273 #ifdef CONFIG_MACH_EDB9301
 274 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
 275         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 276         .atag_offset    = 0x100,
 277         .map_io         = ep93xx_map_io,
 278         .init_irq       = ep93xx_init_irq,
 279         .handle_irq     = vic_handle_irq,
 280         .timer          = &ep93xx_timer,
 281         .init_machine   = edb93xx_init_machine,
 282         .init_late      = ep93xx_init_late,
 283         .restart        = ep93xx_restart,
 284 MACHINE_END
 285 #endif
 286
 287 #ifdef CONFIG_MACH_EDB9302
 288 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
 289         /* Maintainer: George Kashperko <george@chas.com.ua> */
 290         .atag_offset    = 0x100,
 291         .map_io         = ep93xx_map_io,
 292         .init_irq       = ep93xx_init_irq,
 293         .handle_irq     = vic_handle_irq,
 294         .timer          = &ep93xx_timer,
 295         .init_machine   = edb93xx_init_machine,
 296         .init_late      = ep93xx_init_late,
 297         .restart        = ep93xx_restart,
 298 MACHINE_END
 299 #endif
 300
 301 #ifdef CONFIG_MACH_EDB9302A
 302 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
 303         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 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         .init_late      = ep93xx_init_late,
 311         .restart        = ep93xx_restart,
 312 MACHINE_END
 313 #endif
 314
 315 #ifdef CONFIG_MACH_EDB9307
 316 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
 317         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 318         .atag_offset    = 0x100,
 319         .map_io         = ep93xx_map_io,
 320         .init_irq       = ep93xx_init_irq,
 321         .handle_irq     = vic_handle_irq,
 322         .timer          = &ep93xx_timer,
 323         .init_machine   = edb93xx_init_machine,
 324         .init_late      = ep93xx_init_late,
 325         .restart        = ep93xx_restart,
 326 MACHINE_END
 327 #endif
 328
 329 #ifdef CONFIG_MACH_EDB9307A
 330 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
 331         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 332         .atag_offset    = 0x100,
 333         .map_io         = ep93xx_map_io,
 334         .init_irq       = ep93xx_init_irq,
 335         .handle_irq     = vic_handle_irq,
 336         .timer          = &ep93xx_timer,
 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_EDB9312
 344 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
 345         /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
 346         .atag_offset    = 0x100,
 347         .map_io         = ep93xx_map_io,
 348         .init_irq       = ep93xx_init_irq,
 349         .handle_irq     = vic_handle_irq,
 350         .timer          = &ep93xx_timer,
 351         .init_machine   = edb93xx_init_machine,
 352         .init_late      = ep93xx_init_late,
 353         .restart        = ep93xx_restart,
 354 MACHINE_END
 355 #endif
 356
 357 #ifdef CONFIG_MACH_EDB9315
 358 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
 359         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 360         .atag_offset    = 0x100,
 361         .map_io         = ep93xx_map_io,
 362         .init_irq       = ep93xx_init_irq,
 363         .handle_irq     = vic_handle_irq,
 364         .timer          = &ep93xx_timer,
 365         .init_machine   = edb93xx_init_machine,
 366         .init_late      = ep93xx_init_late,
 367         .restart        = ep93xx_restart,
 368 MACHINE_END
 369 #endif
 370
 371 #ifdef CONFIG_MACH_EDB9315A
 372 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
 373         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 374         .atag_offset    = 0x100,
 375         .map_io         = ep93xx_map_io,
 376         .init_irq       = ep93xx_init_irq,
 377         .handle_irq     = vic_handle_irq,
 378         .timer          = &ep93xx_timer,
 379         .init_machine   = edb93xx_init_machine,
 380         .init_late      = ep93xx_init_late,
 381         .restart        = ep93xx_restart,
 382 MACHINE_END
 383 #endif