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/i2c-gpio.h>
  23 #include <linux/mmc/host.h>
  24 #include <linux/spi/spi.h>
  25 #include <linux/spi/mmc_spi.h>
  26 #include <linux/platform_data/video-ep93xx.h>
  27 #include <linux/platform_data/spi-ep93xx.h>
  28 #include <linux/gpio.h>
  29
  30 #include <mach/hardware.h>
  31 #include <mach/gpio-ep93xx.h>
  32
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35
  36 #include "soc.h"
  37
  38 static struct ep93xx_eth_data __initdata simone_eth_data = {
  39         .phy_id         = 1,
  40 };
  41
  42 static struct ep93xxfb_mach_info __initdata simone_fb_info = {
  43         .flags          = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING,
  44 };
  45
  46 static struct mmc_spi_platform_data simone_mmc_spi_data = {
  47         .detect_delay   = 500,
  48         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
  49         .flags          = MMC_SPI_USE_CD_GPIO,
  50         .cd_gpio        = EP93XX_GPIO_LINE_EGPIO0,
  51         .cd_debounce    = 1,
  52 };
  53
  54 static struct spi_board_info simone_spi_devices[] __initdata = {
  55         {
  56                 .modalias               = "mmc_spi",
  57                 .platform_data          = &simone_mmc_spi_data,
  58                 /*
  59                  * We use 10 MHz even though the maximum is 3.7 MHz. The driver
  60                  * will limit it automatically to max. frequency.
  61                  */
  62                 .max_speed_hz           = 10 * 1000 * 1000,
  63                 .bus_num                = 0,
  64                 .chip_select            = 0,
  65                 .mode                   = SPI_MODE_3,
  66         },
  67 };
  68
  69 /*
  70  * Up to v1.3, the Sim.One used SFRMOUT as SD card chip select, but this goes
  71  * low between multi-message command blocks. From v1.4, it uses a GPIO instead.
  72  * v1.3 parts will still work, since the signal on SFRMOUT is automatic.
  73  */
  74 static int simone_spi_chipselects[] __initdata = {
  75         EP93XX_GPIO_LINE_EGPIO1,
  76 };
  77
  78 static struct ep93xx_spi_info simone_spi_info __initdata = {
  79         .chipselect     = simone_spi_chipselects,
  80         .num_chipselect = ARRAY_SIZE(simone_spi_chipselects),
  81         .use_dma = 1,
  82 };
  83
  84 static struct i2c_gpio_platform_data __initdata simone_i2c_gpio_data = {
  85         .sda_pin                = EP93XX_GPIO_LINE_EEDAT,
  86         .sda_is_open_drain      = 0,
  87         .scl_pin                = EP93XX_GPIO_LINE_EECLK,
  88         .scl_is_open_drain      = 0,
  89         .udelay                 = 0,
  90         .timeout                = 0,
  91 };
  92
  93 static struct i2c_board_info __initdata simone_i2c_board_info[] = {
  94         {
  95                 I2C_BOARD_INFO("ds1337", 0x68),
  96         },
  97 };
  98
  99 static struct platform_device simone_audio_device = {
 100         .name           = "simone-audio",
 101         .id             = -1,
 102 };
 103
 104 static void __init simone_register_audio(void)
 105 {
 106         ep93xx_register_ac97();
 107         platform_device_register(&simone_audio_device);
 108 }
 109
 110 static void __init simone_init_machine(void)
 111 {
 112         ep93xx_init_devices();
 113         ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_8M);
 114         ep93xx_register_eth(&simone_eth_data, 1);
 115         ep93xx_register_fb(&simone_fb_info);
 116         ep93xx_register_i2c(&simone_i2c_gpio_data, simone_i2c_board_info,
 117                             ARRAY_SIZE(simone_i2c_board_info));
 118         ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
 119                             ARRAY_SIZE(simone_spi_devices));
 120         simone_register_audio();
 121 }
 122
 123 MACHINE_START(SIM_ONE, "Simplemachines Sim.One Board")
 124         /* Maintainer: Ryan Mallon */
 125         .atag_offset    = 0x100,
 126         .map_io         = ep93xx_map_io,
 127         .init_irq       = ep93xx_init_irq,
 128         .init_time      = ep93xx_timer_init,
 129         .init_machine   = simone_init_machine,
 130         .init_late      = ep93xx_init_late,
 131         .restart        = ep93xx_restart,
 132 MACHINE_END