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/mach-types.h>
  43 #include <asm/mach/arch.h>
  44
  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_edb9307() || machine_is_edb9312() ||
  93                    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 int edb93xx_cs4271_hw_setup(struct spi_device *spi)
 109 {
 110         return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
 111                                 GPIOF_OUT_INIT_HIGH, spi->modalias);
 112 }
 113
 114 static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)
 115 {
 116         gpio_free(EP93XX_GPIO_LINE_EGPIO6);
 117 }
 118
 119 static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)
 120 {
 121         gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
 122 }
 123
 124 static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {
 125         .setup          = edb93xx_cs4271_hw_setup,
 126         .cleanup        = edb93xx_cs4271_hw_cleanup,
 127         .cs_control     = edb93xx_cs4271_hw_cs_control,
 128 };
 129
 130 static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
 131         {
 132                 .modalias               = "cs4271",
 133                 .platform_data          = &edb93xx_cs4271_data,
 134                 .controller_data        = &edb93xx_cs4271_hw,
 135                 .max_speed_hz           = 6000000,
 136                 .bus_num                = 0,
 137                 .chip_select            = 0,
 138                 .mode                   = SPI_MODE_3,
 139         },
 140 };
 141
 142 static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
 143         .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info),
 144 };
 145
 146 static void __init edb93xx_register_spi(void)
 147 {
 148         if (machine_is_edb9301() || machine_is_edb9302())
 149                 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
 150         else if (machine_is_edb9302a() || machine_is_edb9307a())
 151                 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
 152         else if (machine_is_edb9315a())
 153                 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
 154
 155         ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
 156                             ARRAY_SIZE(edb93xx_spi_board_info));
 157 }
 158
 159
 160 /*************************************************************************
 161  * EDB93xx I2S
 162  *************************************************************************/
 163 static int __init edb93xx_has_audio(void)
 164 {
 165         return (machine_is_edb9301() || machine_is_edb9302() ||
 166                 machine_is_edb9302a() || machine_is_edb9307a() ||
 167                 machine_is_edb9315a());
 168 }
 169
 170 static void __init edb93xx_register_i2s(void)
 171 {
 172         if (edb93xx_has_audio()) {
 173                 ep93xx_register_i2s();
 174         }
 175 }
 176
 177
 178 /*************************************************************************
 179  * EDB93xx pwm
 180  *************************************************************************/
 181 static void __init edb93xx_register_pwm(void)
 182 {
 183         if (machine_is_edb9301() ||
 184             machine_is_edb9302() || machine_is_edb9302a()) {
 185                 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
 186                 ep93xx_register_pwm(0, 1);
 187         } else if (machine_is_edb9307() || machine_is_edb9307a()) {
 188                 /* EP9307 only has pwm.0 (PWMOUT) */
 189                 ep93xx_register_pwm(1, 0);
 190         } else {
 191                 /* EP9312 and EP9315 have both */
 192                 ep93xx_register_pwm(1, 1);
 193         }
 194 }
 195
 196
 197 /*************************************************************************
 198  * EDB93xx framebuffer
 199  *************************************************************************/
 200 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
 201         .num_modes      = EP93XXFB_USE_MODEDB,
 202         .bpp            = 16,
 203         .flags          = 0,
 204 };
 205
 206 static int __init edb93xx_has_fb(void)
 207 {
 208         /* These platforms have an ep93xx with video capability */
 209         return machine_is_edb9307() || machine_is_edb9307a() ||
 210                machine_is_edb9312() || machine_is_edb9315() ||
 211                machine_is_edb9315a();
 212 }
 213
 214 static void __init edb93xx_register_fb(void)
 215 {
 216         if (!edb93xx_has_fb())
 217                 return;
 218
 219         if (machine_is_edb9307a() || machine_is_edb9315a())
 220                 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
 221         else
 222                 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
 223
 224         ep93xx_register_fb(&edb93xxfb_info);
 225 }
 226
 227
 228 static void __init edb93xx_init_machine(void)
 229 {
 230         ep93xx_init_devices();
 231         edb93xx_register_flash();
 232         ep93xx_register_eth(&edb93xx_eth_data, 1);
 233         edb93xx_register_i2c();
 234         edb93xx_register_spi();
 235         edb93xx_register_i2s();
 236         edb93xx_register_pwm();
 237         edb93xx_register_fb();
 238 }
 239
 240
 241 #ifdef CONFIG_MACH_EDB9301
 242 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
 243         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 244         .atag_offset    = 0x100,
 245         .map_io         = ep93xx_map_io,
 246         .init_irq       = ep93xx_init_irq,
 247         .timer          = &ep93xx_timer,
 248         .init_machine   = edb93xx_init_machine,
 249 MACHINE_END
 250 #endif
 251
 252 #ifdef CONFIG_MACH_EDB9302
 253 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
 254         /* Maintainer: George Kashperko <george@chas.com.ua> */
 255         .atag_offset    = 0x100,
 256         .map_io         = ep93xx_map_io,
 257         .init_irq       = ep93xx_init_irq,
 258         .timer          = &ep93xx_timer,
 259         .init_machine   = edb93xx_init_machine,
 260 MACHINE_END
 261 #endif
 262
 263 #ifdef CONFIG_MACH_EDB9302A
 264 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
 265         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 266         .atag_offset    = 0x100,
 267         .map_io         = ep93xx_map_io,
 268         .init_irq       = ep93xx_init_irq,
 269         .timer          = &ep93xx_timer,
 270         .init_machine   = edb93xx_init_machine,
 271 MACHINE_END
 272 #endif
 273
 274 #ifdef CONFIG_MACH_EDB9307
 275 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
 276         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 277         .atag_offset    = 0x100,
 278         .map_io         = ep93xx_map_io,
 279         .init_irq       = ep93xx_init_irq,
 280         .timer          = &ep93xx_timer,
 281         .init_machine   = edb93xx_init_machine,
 282 MACHINE_END
 283 #endif
 284
 285 #ifdef CONFIG_MACH_EDB9307A
 286 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
 287         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 288         .atag_offset    = 0x100,
 289         .map_io         = ep93xx_map_io,
 290         .init_irq       = ep93xx_init_irq,
 291         .timer          = &ep93xx_timer,
 292         .init_machine   = edb93xx_init_machine,
 293 MACHINE_END
 294 #endif
 295
 296 #ifdef CONFIG_MACH_EDB9312
 297 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
 298         /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
 299         .atag_offset    = 0x100,
 300         .map_io         = ep93xx_map_io,
 301         .init_irq       = ep93xx_init_irq,
 302         .timer          = &ep93xx_timer,
 303         .init_machine   = edb93xx_init_machine,
 304 MACHINE_END
 305 #endif
 306
 307 #ifdef CONFIG_MACH_EDB9315
 308 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
 309         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 310         .atag_offset    = 0x100,
 311         .map_io         = ep93xx_map_io,
 312         .init_irq       = ep93xx_init_irq,
 313         .timer          = &ep93xx_timer,
 314         .init_machine   = edb93xx_init_machine,
 315 MACHINE_END
 316 #endif
 317
 318 #ifdef CONFIG_MACH_EDB9315A
 319 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
 320         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 321         .atag_offset    = 0x100,
 322         .map_io         = ep93xx_map_io,
 323         .init_irq       = ep93xx_init_irq,
 324         .timer          = &ep93xx_timer,
 325         .init_machine   = edb93xx_init_machine,
 326 MACHINE_END
 327 #endif