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/spi/spi.h>
  32 #include <linux/gpio/machine.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
  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