arch/arm/mach-ep93xx/simone.c

   1 /*
   2  * arch/arm/mach-ep93xx/simone.c
   3  * Simplemachines Sim.One support.
   4  *
   5  * Copyright (C) 2010 Ryan Mallon
   6  *
   7  * Based on the 2.6.24.7 support:
   8  *   Copyright (C) 2009 Simplemachines
   9  *   MMC support by Peter Ivanov <ivanovp@gmail.com>, 2007
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or (at
  14  * your option) any later version.
  15  *
  16  */
  17
  18 #include <linux/kernel.h>
  19 #include <linux/init.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/i2c.h>
  22 #include <linux/mmc/host.h>
  23 #include <linux/spi/spi.h>
  24 #include <linux/spi/mmc_spi.h>
  25 #include <linux/platform_data/video-ep93xx.h>
  26 #include <linux/platform_data/spi-ep93xx.h>
  27 #include <linux/gpio.h>
  28
  29 #include <mach/hardware.h>
  30 #include <mach/gpio-ep93xx.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34
  35 #include "soc.h"
  36
  37 static struct ep93xx_eth_data __initdata simone_eth_data = {
  38         .phy_id         = 1,
  39 };
  40
  41 static struct ep93xxfb_mach_info __initdata simone_fb_info = {
  42         .flags          = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
  43 };
  44
  45 static struct mmc_spi_platform_data simone_mmc_spi_data = {
  46         .detect_delay   = 500,
  47         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
  48         .flags          = MMC_SPI_USE_CD_GPIO,
  49         .cd_gpio        = EP93XX_GPIO_LINE_EGPIO0,
  50         .cd_debounce    = 1,
  51 };
  52
  53 static struct spi_board_info simone_spi_devices[] __initdata = {
  54         {
  55                 .modalias               = "mmc_spi",
  56                 .platform_data          = &simone_mmc_spi_data,
  57                 /*
  58                  * We use 10 MHz even though the maximum is 3.7 MHz. The driver
  59                  * will limit it automatically to max. frequency.
  60                  */
  61                 .max_speed_hz           = 10 * 1000 * 1000,
  62                 .bus_num                = 0,
  63                 .chip_select            = 0,
  64                 .mode                   = SPI_MODE_3,
  65         },
  66 };
  67
  68 /*
  69  * Up to v1.3, the Sim.One used SFRMOUT as SD card chip select, but this goes
  70  * low between multi-message command blocks. From v1.4, it uses a GPIO instead.
  71  * v1.3 parts will still work, since the signal on SFRMOUT is automatic.
  72  */
  73 static int simone_spi_chipselects[] __initdata = {
  74         EP93XX_GPIO_LINE_EGPIO1,
  75 };
  76
  77 static struct ep93xx_spi_info simone_spi_info __initdata = {
  78         .chipselect     = simone_spi_chipselects,
  79         .num_chipselect = ARRAY_SIZE(simone_spi_chipselects),
  80         .use_dma = 1,
  81 };
  82
  83 static struct i2c_board_info __initdata simone_i2c_board_info[] = {
  84         {
  85                 I2C_BOARD_INFO("ds1337", 0x68),
  86         },
  87 };
  88
  89 static struct platform_device simone_audio_device = {
  90         .name           = "simone-audio",
  91         .id             = -1,
  92 };
  93
  94 static void __init simone_register_audio(void)
  95 {
  96         ep93xx_register_ac97();
  97         platform_device_register(&simone_audio_device);
  98 }
  99
 100 static void __init simone_init_machine(void)
 101 {
 102         ep93xx_init_devices();
 103         ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_8M);
 104         ep93xx_register_eth(&simone_eth_data, 1);
 105         ep93xx_register_fb(&simone_fb_info);
 106         ep93xx_register_i2c(simone_i2c_board_info,
 107                             ARRAY_SIZE(simone_i2c_board_info));
 108         ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
 109                             ARRAY_SIZE(simone_spi_devices));
 110         simone_register_audio();
 111 }
 112
 113 MACHINE_START(SIM_ONE, "Simplemachines Sim.One Board")
 114         /* Maintainer: Ryan Mallon */
 115         .atag_offset    = 0x100,
 116         .map_io         = ep93xx_map_io,
 117         .init_irq       = ep93xx_init_irq,
 118         .init_time      = ep93xx_timer_init,
 119         .init_machine   = simone_init_machine,
 120         .init_late      = ep93xx_init_late,
 121         .restart        = ep93xx_restart,
 122 MACHINE_END