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
  41 #include <asm/mach-types.h>
  42 #include <asm/mach/arch.h>
  43
  44
  45 static void __init edb93xx_register_flash(void)
  46 {
  47         if (machine_is_edb9307() || machine_is_edb9312() ||
  48             machine_is_edb9315()) {
  49                 ep93xx_register_flash(4, EP93XX_CS6_PHYS_BASE, SZ_32M);
  50         } else {
  51                 ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_16M);
  52         }
  53 }
  54
  55 static struct ep93xx_eth_data __initdata edb93xx_eth_data = {
  56         .phy_id         = 1,
  57 };
  58
  59
  60 /*************************************************************************
  61  * EDB93xx i2c peripheral handling
  62  *************************************************************************/
  63 static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = {
  64         .sda_pin                = EP93XX_GPIO_LINE_EEDAT,
  65         .sda_is_open_drain      = 0,
  66         .scl_pin                = EP93XX_GPIO_LINE_EECLK,
  67         .scl_is_open_drain      = 0,
  68         .udelay                 = 0,    /* default to 100 kHz */
  69         .timeout                = 0,    /* default to 100 ms */
  70 };
  71
  72 static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = {
  73         {
  74                 I2C_BOARD_INFO("isl1208", 0x6f),
  75         },
  76 };
  77
  78 static struct i2c_board_info __initdata edb93xx_i2c_board_info[] = {
  79         {
  80                 I2C_BOARD_INFO("ds1337", 0x68),
  81         },
  82 };
  83
  84 static void __init edb93xx_register_i2c(void)
  85 {
  86         if (machine_is_edb9302a() || machine_is_edb9307a() ||
  87             machine_is_edb9315a()) {
  88                 ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
  89                                     edb93xxa_i2c_board_info,
  90                                     ARRAY_SIZE(edb93xxa_i2c_board_info));
  91         } else if (machine_is_edb9307() || machine_is_edb9312() ||
  92                    machine_is_edb9315()) {
  93                 ep93xx_register_i2c(&edb93xx_i2c_gpio_data,
  94                                     edb93xx_i2c_board_info,
  95                                     ARRAY_SIZE(edb93xx_i2c_board_info));
  96         }
  97 }
  98
  99
 100 /*************************************************************************
 101  * EDB93xx SPI peripheral handling
 102  *************************************************************************/
 103 static struct cs4271_platform_data edb93xx_cs4271_data = {
 104         .gpio_nreset    = -EINVAL,      /* filled in later */
 105 };
 106
 107 static int edb93xx_cs4271_hw_setup(struct spi_device *spi)
 108 {
 109         return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,
 110                                 GPIOF_OUT_INIT_HIGH, spi->modalias);
 111 }
 112
 113 static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)
 114 {
 115         gpio_free(EP93XX_GPIO_LINE_EGPIO6);
 116 }
 117
 118 static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)
 119 {
 120         gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);
 121 }
 122
 123 static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {
 124         .setup          = edb93xx_cs4271_hw_setup,
 125         .cleanup        = edb93xx_cs4271_hw_cleanup,
 126         .cs_control     = edb93xx_cs4271_hw_cs_control,
 127 };
 128
 129 static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
 130         {
 131                 .modalias               = "cs4271",
 132                 .platform_data          = &edb93xx_cs4271_data,
 133                 .controller_data        = &edb93xx_cs4271_hw,
 134                 .max_speed_hz           = 6000000,
 135                 .bus_num                = 0,
 136                 .chip_select            = 0,
 137                 .mode                   = SPI_MODE_3,
 138         },
 139 };
 140
 141 static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
 142         .num_chipselect = ARRAY_SIZE(edb93xx_spi_board_info),
 143 };
 144
 145 static void __init edb93xx_register_spi(void)
 146 {
 147         if (machine_is_edb9301() || machine_is_edb9302())
 148                 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;
 149         else if (machine_is_edb9302a() || machine_is_edb9307a())
 150                 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);
 151         else if (machine_is_edb9315a())
 152                 edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
 153
 154         ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
 155                             ARRAY_SIZE(edb93xx_spi_board_info));
 156 }
 157
 158
 159 /*************************************************************************
 160  * EDB93xx I2S
 161  *************************************************************************/
 162 static int __init edb93xx_has_audio(void)
 163 {
 164         return (machine_is_edb9301() || machine_is_edb9302() ||
 165                 machine_is_edb9302a() || machine_is_edb9307a() ||
 166                 machine_is_edb9315a());
 167 }
 168
 169 static void __init edb93xx_register_i2s(void)
 170 {
 171         if (edb93xx_has_audio()) {
 172                 ep93xx_register_i2s();
 173         }
 174 }
 175
 176
 177 /*************************************************************************
 178  * EDB93xx pwm
 179  *************************************************************************/
 180 static void __init edb93xx_register_pwm(void)
 181 {
 182         if (machine_is_edb9301() ||
 183             machine_is_edb9302() || machine_is_edb9302a()) {
 184                 /* EP9301 and EP9302 only have pwm.1 (EGPIO14) */
 185                 ep93xx_register_pwm(0, 1);
 186         } else if (machine_is_edb9307() || machine_is_edb9307a()) {
 187                 /* EP9307 only has pwm.0 (PWMOUT) */
 188                 ep93xx_register_pwm(1, 0);
 189         } else {
 190                 /* EP9312 and EP9315 have both */
 191                 ep93xx_register_pwm(1, 1);
 192         }
 193 }
 194
 195
 196 /*************************************************************************
 197  * EDB93xx framebuffer
 198  *************************************************************************/
 199 static struct ep93xxfb_mach_info __initdata edb93xxfb_info = {
 200         .num_modes      = EP93XXFB_USE_MODEDB,
 201         .bpp            = 16,
 202         .flags          = 0,
 203 };
 204
 205 static int __init edb93xx_has_fb(void)
 206 {
 207         /* These platforms have an ep93xx with video capability */
 208         return machine_is_edb9307() || machine_is_edb9307a() ||
 209                machine_is_edb9312() || machine_is_edb9315() ||
 210                machine_is_edb9315a();
 211 }
 212
 213 static void __init edb93xx_register_fb(void)
 214 {
 215         if (!edb93xx_has_fb())
 216                 return;
 217
 218         if (machine_is_edb9307a() || machine_is_edb9315a())
 219                 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN0;
 220         else
 221                 edb93xxfb_info.flags |= EP93XXFB_USE_SDCSN3;
 222
 223         ep93xx_register_fb(&edb93xxfb_info);
 224 }
 225
 226
 227 static void __init edb93xx_init_machine(void)
 228 {
 229         ep93xx_init_devices();
 230         edb93xx_register_flash();
 231         ep93xx_register_eth(&edb93xx_eth_data, 1);
 232         edb93xx_register_i2c();
 233         edb93xx_register_spi();
 234         edb93xx_register_i2s();
 235         edb93xx_register_pwm();
 236         edb93xx_register_fb();
 237 }
 238
 239
 240 #ifdef CONFIG_MACH_EDB9301
 241 MACHINE_START(EDB9301, "Cirrus Logic EDB9301 Evaluation Board")
 242         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 243         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
 244         .map_io         = ep93xx_map_io,
 245         .init_irq       = ep93xx_init_irq,
 246         .timer          = &ep93xx_timer,
 247         .init_machine   = edb93xx_init_machine,
 248 MACHINE_END
 249 #endif
 250
 251 #ifdef CONFIG_MACH_EDB9302
 252 MACHINE_START(EDB9302, "Cirrus Logic EDB9302 Evaluation Board")
 253         /* Maintainer: George Kashperko <george@chas.com.ua> */
 254         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
 255         .map_io         = ep93xx_map_io,
 256         .init_irq       = ep93xx_init_irq,
 257         .timer          = &ep93xx_timer,
 258         .init_machine   = edb93xx_init_machine,
 259 MACHINE_END
 260 #endif
 261
 262 #ifdef CONFIG_MACH_EDB9302A
 263 MACHINE_START(EDB9302A, "Cirrus Logic EDB9302A Evaluation Board")
 264         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 265         .boot_params    = EP93XX_SDCE0_PHYS_BASE + 0x100,
 266         .map_io         = ep93xx_map_io,
 267         .init_irq       = ep93xx_init_irq,
 268         .timer          = &ep93xx_timer,
 269         .init_machine   = edb93xx_init_machine,
 270 MACHINE_END
 271 #endif
 272
 273 #ifdef CONFIG_MACH_EDB9307
 274 MACHINE_START(EDB9307, "Cirrus Logic EDB9307 Evaluation Board")
 275         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 276         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
 277         .map_io         = ep93xx_map_io,
 278         .init_irq       = ep93xx_init_irq,
 279         .timer          = &ep93xx_timer,
 280         .init_machine   = edb93xx_init_machine,
 281 MACHINE_END
 282 #endif
 283
 284 #ifdef CONFIG_MACH_EDB9307A
 285 MACHINE_START(EDB9307A, "Cirrus Logic EDB9307A Evaluation Board")
 286         /* Maintainer: H Hartley Sweeten <hsweeten@visionengravers.com> */
 287         .boot_params    = EP93XX_SDCE0_PHYS_BASE + 0x100,
 288         .map_io         = ep93xx_map_io,
 289         .init_irq       = ep93xx_init_irq,
 290         .timer          = &ep93xx_timer,
 291         .init_machine   = edb93xx_init_machine,
 292 MACHINE_END
 293 #endif
 294
 295 #ifdef CONFIG_MACH_EDB9312
 296 MACHINE_START(EDB9312, "Cirrus Logic EDB9312 Evaluation Board")
 297         /* Maintainer: Toufeeq Hussain <toufeeq_hussain@infosys.com> */
 298         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
 299         .map_io         = ep93xx_map_io,
 300         .init_irq       = ep93xx_init_irq,
 301         .timer          = &ep93xx_timer,
 302         .init_machine   = edb93xx_init_machine,
 303 MACHINE_END
 304 #endif
 305
 306 #ifdef CONFIG_MACH_EDB9315
 307 MACHINE_START(EDB9315, "Cirrus Logic EDB9315 Evaluation Board")
 308         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 309         .boot_params    = EP93XX_SDCE3_PHYS_BASE_SYNC + 0x100,
 310         .map_io         = ep93xx_map_io,
 311         .init_irq       = ep93xx_init_irq,
 312         .timer          = &ep93xx_timer,
 313         .init_machine   = edb93xx_init_machine,
 314 MACHINE_END
 315 #endif
 316
 317 #ifdef CONFIG_MACH_EDB9315A
 318 MACHINE_START(EDB9315A, "Cirrus Logic EDB9315A Evaluation Board")
 319         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 320         .boot_params    = EP93XX_SDCE0_PHYS_BASE + 0x100,
 321         .map_io         = ep93xx_map_io,
 322         .init_irq       = ep93xx_init_irq,
 323         .timer          = &ep93xx_timer,
 324         .init_machine   = edb93xx_init_machine,
 325 MACHINE_END
 326 #endif