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 struct platform_device edb93xx_audio_device = {
 164         .name           = "edb93xx-audio",
 165         .id             = -1,
 166 };
 167
 168 static int __init edb93xx_has_audio(void)
 169 {
 170         return (machine_is_edb9301() || machine_is_edb9302() ||
 171                 machine_is_edb9302a() || machine_is_edb9307a() ||
 172                 machine_is_edb9315a());
 173 }
 174
 175 static void __init edb93xx_register_i2s(void)
 176 {
 177         if (edb93xx_has_audio()) {
 178                 ep93xx_register_i2s();
 179                 platform_device_register(&edb93xx_audio_device);
 180         }
 181 }
 182
 183
 184 /*************************************************************************
 185  * EDB93xx pwm
 186  *************************************************************************/
 187 static void __init edb93xx_register_pwm(void)
 188 {
 189         if (machine_is_edb9301() ||
 190             machine_is_edb9302() || machine_is_edb9302a()) {
 191                 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
 192                 ep93xx_register_pwm(0, 1);
 193         } else if (machine_is_edb9307() || machine_is_edb9307a()) {
 194                 /* EP9307 only has pwm.0 (PWMOUT) */
 195                 ep93xx_register_pwm(1, 0);
 196         } else {
 197                 /* EP9312 and EP9315 have both */
 198                 ep93xx_register_pwm(1, 1);
 199         }
 200 }
 201
 202
 203 /*************************************************************************
 204  * EDB93xx framebuffer
 205  *************************************************************************/
 206 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
 207         .num_modes      = EP93XXFB_USE_MODEDB,
 208         .bpp            = 16,
 209         .flags          = 0,
 210 };
 211
 212 static int __init edb93xx_has_fb(void)
 213 {
 214         /* These platforms have an ep93xx with video capability */
 215         return machine_is_edb9307() || machine_is_edb9307a() ||
 216                machine_is_edb9312() || machine_is_edb9315() ||
 217                machine_is_edb9315a();
 218 }
 219
 220 static void __init edb93xx_register_fb(void)
 221 {
 222         if (!edb93xx_has_fb())
 223                 return;
 224
 225         if (machine_is_edb9307a() || machine_is_edb9315a())
 226                 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
 227         else
 228                 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
 229
 230         ep93xx_register_fb(&edb93xxfb_info);
 231 }
 232
 233
 234 static void __init edb93xx_init_machine(void)
 235 {
 236         ep93xx_init_devices();
 237         edb93xx_register_flash();
 238         ep93xx_register_eth(&edb93xx_eth_data, 1);
 239         edb93xx_register_i2c();
 240         edb93xx_register_spi();
 241         edb93xx_register_i2s();
 242         edb93xx_register_pwm();
 243         edb93xx_register_fb();
 244 }
 245
 246
 247 #ifdef CONFIG_MACH_EDB9301
 248 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
 249         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 250         .atag_offset    = 0x100,
 251         .map_io         = ep93xx_map_io,
 252         .init_irq       = ep93xx_init_irq,
 253         .timer          = &ep93xx_timer,
 254         .init_machine   = edb93xx_init_machine,
 255 MACHINE_END
 256 #endif
 257
 258 #ifdef CONFIG_MACH_EDB9302
 259 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
 260         /* Maintainer: George Kashperko <george@chas.com.ua> */
 261         .atag_offset    = 0x100,
 262         .map_io         = ep93xx_map_io,
 263         .init_irq       = ep93xx_init_irq,
 264         .timer          = &ep93xx_timer,
 265         .init_machine   = edb93xx_init_machine,
 266 MACHINE_END
 267 #endif
 268
 269 #ifdef CONFIG_MACH_EDB9302A
 270 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
 271         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 272         .atag_offset    = 0x100,
 273         .map_io         = ep93xx_map_io,
 274         .init_irq       = ep93xx_init_irq,
 275         .timer          = &ep93xx_timer,
 276         .init_machine   = edb93xx_init_machine,
 277 MACHINE_END
 278 #endif
 279
 280 #ifdef CONFIG_MACH_EDB9307
 281 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
 282         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 283         .atag_offset    = 0x100,
 284         .map_io         = ep93xx_map_io,
 285         .init_irq       = ep93xx_init_irq,
 286         .timer          = &ep93xx_timer,
 287         .init_machine   = edb93xx_init_machine,
 288 MACHINE_END
 289 #endif
 290
 291 #ifdef CONFIG_MACH_EDB9307A
 292 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
 293         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 294         .atag_offset    = 0x100,
 295         .map_io         = ep93xx_map_io,
 296         .init_irq       = ep93xx_init_irq,
 297         .timer          = &ep93xx_timer,
 298         .init_machine   = edb93xx_init_machine,
 299 MACHINE_END
 300 #endif
 301
 302 #ifdef CONFIG_MACH_EDB9312
 303 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
 304         /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
 305         .atag_offset    = 0x100,
 306         .map_io         = ep93xx_map_io,
 307         .init_irq       = ep93xx_init_irq,
 308         .timer          = &ep93xx_timer,
 309         .init_machine   = edb93xx_init_machine,
 310 MACHINE_END
 311 #endif
 312
 313 #ifdef CONFIG_MACH_EDB9315
 314 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
 315         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 316         .atag_offset    = 0x100,
 317         .map_io         = ep93xx_map_io,
 318         .init_irq       = ep93xx_init_irq,
 319         .timer          = &ep93xx_timer,
 320         .init_machine   = edb93xx_init_machine,
 321 MACHINE_END
 322 #endif
 323
 324 #ifdef CONFIG_MACH_EDB9315A
 325 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A 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         .timer          = &ep93xx_timer,
 331         .init_machine   = edb93xx_init_machine,
 332 MACHINE_END
 333 #endif