linux/arch/arm/mach-imx/mach-imx27_visstrim_m10.c
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   1/*
   2 * mach-imx27_visstrim_m10.c
   3 *
   4 * Copyright 2010  Javier Martin <javier.martin@vista-silicon.com>
   5 *
   6 * Based on mach-pcm038.c, mach-pca100.c, mach-mx27ads.c and others.
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the Free Software
  20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  21 * MA 02110-1301, USA.
  22 */
  23
  24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  25
  26#include <linux/platform_device.h>
  27#include <linux/mtd/physmap.h>
  28#include <linux/i2c.h>
  29#include <linux/i2c/pca953x.h>
  30#include <linux/gpio_keys.h>
  31#include <linux/input.h>
  32#include <linux/gpio.h>
  33#include <asm/mach-types.h>
  34#include <asm/mach/arch.h>
  35#include <asm/mach/time.h>
  36#include <mach/common.h>
  37#include <mach/iomux.h>
  38
  39#include "devices-imx27.h"
  40
  41#define OTG_PHY_CS_GPIO (GPIO_PORTF + 17)
  42#define SDHC1_IRQ IRQ_GPIOB(25)
  43
  44static const int visstrim_m10_pins[] __initconst = {
  45        /* UART1 (console) */
  46        PE12_PF_UART1_TXD,
  47        PE13_PF_UART1_RXD,
  48        PE14_PF_UART1_CTS,
  49        PE15_PF_UART1_RTS,
  50        /* FEC */
  51        PD0_AIN_FEC_TXD0,
  52        PD1_AIN_FEC_TXD1,
  53        PD2_AIN_FEC_TXD2,
  54        PD3_AIN_FEC_TXD3,
  55        PD4_AOUT_FEC_RX_ER,
  56        PD5_AOUT_FEC_RXD1,
  57        PD6_AOUT_FEC_RXD2,
  58        PD7_AOUT_FEC_RXD3,
  59        PD8_AF_FEC_MDIO,
  60        PD9_AIN_FEC_MDC,
  61        PD10_AOUT_FEC_CRS,
  62        PD11_AOUT_FEC_TX_CLK,
  63        PD12_AOUT_FEC_RXD0,
  64        PD13_AOUT_FEC_RX_DV,
  65        PD14_AOUT_FEC_RX_CLK,
  66        PD15_AOUT_FEC_COL,
  67        PD16_AIN_FEC_TX_ER,
  68        PF23_AIN_FEC_TX_EN,
  69        /* SDHC1 */
  70        PE18_PF_SD1_D0,
  71        PE19_PF_SD1_D1,
  72        PE20_PF_SD1_D2,
  73        PE21_PF_SD1_D3,
  74        PE22_PF_SD1_CMD,
  75        PE23_PF_SD1_CLK,
  76        /* Both I2Cs */
  77        PD17_PF_I2C_DATA,
  78        PD18_PF_I2C_CLK,
  79        PC5_PF_I2C2_SDA,
  80        PC6_PF_I2C2_SCL,
  81        /* USB OTG */
  82        OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
  83        PC9_PF_USBOTG_DATA0,
  84        PC11_PF_USBOTG_DATA1,
  85        PC10_PF_USBOTG_DATA2,
  86        PC13_PF_USBOTG_DATA3,
  87        PC12_PF_USBOTG_DATA4,
  88        PC7_PF_USBOTG_DATA5,
  89        PC8_PF_USBOTG_DATA6,
  90        PE25_PF_USBOTG_DATA7,
  91        PE24_PF_USBOTG_CLK,
  92        PE2_PF_USBOTG_DIR,
  93        PE0_PF_USBOTG_NXT,
  94        PE1_PF_USBOTG_STP,
  95        PB23_PF_USB_PWR,
  96        PB24_PF_USB_OC,
  97};
  98
  99/* GPIOs used as events for applications */
 100static struct gpio_keys_button visstrim_gpio_keys[] = {
 101        {
 102                .type   = EV_KEY,
 103                .code   = KEY_RESTART,
 104                .gpio   = (GPIO_PORTC + 15),
 105                .desc   = "Default config",
 106                .active_low = 0,
 107                .wakeup = 1,
 108        },
 109        {
 110                .type   = EV_KEY,
 111                .code   = KEY_RECORD,
 112                .gpio   = (GPIO_PORTF + 14),
 113                .desc   = "Record",
 114                .active_low = 0,
 115                .wakeup = 1,
 116        },
 117        {
 118                .type   = EV_KEY,
 119                .code   = KEY_STOP,
 120                .gpio   = (GPIO_PORTF + 13),
 121                .desc   = "Stop",
 122                .active_low = 0,
 123                .wakeup = 1,
 124        }
 125};
 126
 127static struct gpio_keys_platform_data visstrim_gpio_keys_platform_data = {
 128        .buttons        = visstrim_gpio_keys,
 129        .nbuttons       = ARRAY_SIZE(visstrim_gpio_keys),
 130};
 131
 132static struct platform_device visstrim_gpio_keys_device = {
 133        .name   = "gpio-keys",
 134        .id     = -1,
 135        .dev    = {
 136                .platform_data  = &visstrim_gpio_keys_platform_data,
 137        },
 138};
 139
 140/* Visstrim_SM10 has a microSD slot connected to sdhc1 */
 141static int visstrim_m10_sdhc1_init(struct device *dev,
 142                irq_handler_t detect_irq, void *data)
 143{
 144        int ret;
 145
 146        ret = request_irq(SDHC1_IRQ, detect_irq, IRQF_TRIGGER_FALLING,
 147                                "mmc-detect", data);
 148        return ret;
 149}
 150
 151static void visstrim_m10_sdhc1_exit(struct device *dev, void *data)
 152{
 153        free_irq(SDHC1_IRQ, data);
 154}
 155
 156static const struct imxmmc_platform_data visstrim_m10_sdhc_pdata __initconst = {
 157        .init = visstrim_m10_sdhc1_init,
 158        .exit = visstrim_m10_sdhc1_exit,
 159};
 160
 161/* Visstrim_SM10 NOR flash */
 162static struct physmap_flash_data visstrim_m10_flash_data = {
 163        .width = 2,
 164};
 165
 166static struct resource visstrim_m10_flash_resource = {
 167        .start = 0xc0000000,
 168        .end = 0xc0000000 + SZ_64M - 1,
 169        .flags = IORESOURCE_MEM,
 170};
 171
 172static struct platform_device visstrim_m10_nor_mtd_device = {
 173        .name = "physmap-flash",
 174        .id = 0,
 175        .dev = {
 176                .platform_data = &visstrim_m10_flash_data,
 177        },
 178        .num_resources = 1,
 179        .resource = &visstrim_m10_flash_resource,
 180};
 181
 182static struct platform_device *platform_devices[] __initdata = {
 183        &visstrim_gpio_keys_device,
 184        &visstrim_m10_nor_mtd_device,
 185};
 186
 187/* Visstrim_M10 uses UART0 as console */
 188static const struct imxuart_platform_data uart_pdata __initconst = {
 189        .flags = IMXUART_HAVE_RTSCTS,
 190};
 191
 192/* I2C */
 193static const struct imxi2c_platform_data visstrim_m10_i2c_data __initconst = {
 194        .bitrate = 100000,
 195};
 196
 197static struct pca953x_platform_data visstrim_m10_pca9555_pdata = {
 198        .gpio_base = 240, /* After MX27 internal GPIOs */
 199        .invert = 0,
 200};
 201
 202static struct i2c_board_info visstrim_m10_i2c_devices[] = {
 203        {
 204                I2C_BOARD_INFO("pca9555", 0x20),
 205                .platform_data = &visstrim_m10_pca9555_pdata,
 206        },
 207};
 208
 209/* USB OTG */
 210static int otg_phy_init(struct platform_device *pdev)
 211{
 212        gpio_set_value(OTG_PHY_CS_GPIO, 0);
 213        return 0;
 214}
 215
 216static const struct mxc_usbh_platform_data
 217visstrim_m10_usbotg_pdata __initconst = {
 218        .init = otg_phy_init,
 219        .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 220        .flags  = MXC_EHCI_POWER_PINS_ENABLED,
 221};
 222
 223static void __init visstrim_m10_board_init(void)
 224{
 225        int ret;
 226
 227        ret = mxc_gpio_setup_multiple_pins(visstrim_m10_pins,
 228                        ARRAY_SIZE(visstrim_m10_pins), "VISSTRIM_M10");
 229        if (ret)
 230                pr_err("Failed to setup pins (%d)\n", ret);
 231
 232        imx27_add_imx_uart0(&uart_pdata);
 233
 234        i2c_register_board_info(0, visstrim_m10_i2c_devices,
 235                                ARRAY_SIZE(visstrim_m10_i2c_devices));
 236        imx27_add_imx_i2c(0, &visstrim_m10_i2c_data);
 237        imx27_add_imx_i2c(1, &visstrim_m10_i2c_data);
 238        imx27_add_mxc_mmc(0, &visstrim_m10_sdhc_pdata);
 239        imx27_add_mxc_ehci_otg(&visstrim_m10_usbotg_pdata);
 240        imx27_add_fec(NULL);
 241        platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 242}
 243
 244static void __init visstrim_m10_timer_init(void)
 245{
 246        mx27_clocks_init((unsigned long)25000000);
 247}
 248
 249static struct sys_timer visstrim_m10_timer = {
 250        .init   = visstrim_m10_timer_init,
 251};
 252
 253MACHINE_START(IMX27_VISSTRIM_M10, "Vista Silicon Visstrim_M10")
 254        .boot_params    = MX27_PHYS_OFFSET + 0x100,
 255        .map_io         = mx27_map_io,
 256        .init_irq       = mx27_init_irq,
 257        .init_machine   = visstrim_m10_board_init,
 258        .timer          = &visstrim_m10_timer,
 259MACHINE_END
 260