arch/arm/mach-imx/mach-imx27_visstrim_m10.c

   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 <linux/delay.h>
  34 #include <asm/mach-types.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/time.h>
  37 #include <mach/common.h>
  38 #include <mach/iomux.h>
  39
  40 #include "devices-imx27.h"
  41
  42 #define OTG_PHY_CS_GPIO (GPIO_PORTF + 17)
  43 #define SDHC1_IRQ IRQ_GPIOB(25)
  44
  45 static const int visstrim_m10_pins[] __initconst = {
  46         /* UART1 (console) */
  47         PE12_PF_UART1_TXD,
  48         PE13_PF_UART1_RXD,
  49         PE14_PF_UART1_CTS,
  50         PE15_PF_UART1_RTS,
  51         /* FEC */
  52         PD0_AIN_FEC_TXD0,
  53         PD1_AIN_FEC_TXD1,
  54         PD2_AIN_FEC_TXD2,
  55         PD3_AIN_FEC_TXD3,
  56         PD4_AOUT_FEC_RX_ER,
  57         PD5_AOUT_FEC_RXD1,
  58         PD6_AOUT_FEC_RXD2,
  59         PD7_AOUT_FEC_RXD3,
  60         PD8_AF_FEC_MDIO,
  61         PD9_AIN_FEC_MDC,
  62         PD10_AOUT_FEC_CRS,
  63         PD11_AOUT_FEC_TX_CLK,
  64         PD12_AOUT_FEC_RXD0,
  65         PD13_AOUT_FEC_RX_DV,
  66         PD14_AOUT_FEC_RX_CLK,
  67         PD15_AOUT_FEC_COL,
  68         PD16_AIN_FEC_TX_ER,
  69         PF23_AIN_FEC_TX_EN,
  70         /* SDHC1 */
  71         PE18_PF_SD1_D0,
  72         PE19_PF_SD1_D1,
  73         PE20_PF_SD1_D2,
  74         PE21_PF_SD1_D3,
  75         PE22_PF_SD1_CMD,
  76         PE23_PF_SD1_CLK,
  77         /* Both I2Cs */
  78         PD17_PF_I2C_DATA,
  79         PD18_PF_I2C_CLK,
  80         PC5_PF_I2C2_SDA,
  81         PC6_PF_I2C2_SCL,
  82         /* USB OTG */
  83         OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
  84         PC9_PF_USBOTG_DATA0,
  85         PC11_PF_USBOTG_DATA1,
  86         PC10_PF_USBOTG_DATA2,
  87         PC13_PF_USBOTG_DATA3,
  88         PC12_PF_USBOTG_DATA4,
  89         PC7_PF_USBOTG_DATA5,
  90         PC8_PF_USBOTG_DATA6,
  91         PE25_PF_USBOTG_DATA7,
  92         PE24_PF_USBOTG_CLK,
  93         PE2_PF_USBOTG_DIR,
  94         PE0_PF_USBOTG_NXT,
  95         PE1_PF_USBOTG_STP,
  96         PB23_PF_USB_PWR,
  97         PB24_PF_USB_OC,
  98 };
  99
 100 /* GPIOs used as events for applications */
 101 static struct gpio_keys_button visstrim_gpio_keys[] = {
 102         {
 103                 .type   = EV_KEY,
 104                 .code   = KEY_RESTART,
 105                 .gpio   = (GPIO_PORTC + 15),
 106                 .desc   = "Default config",
 107                 .active_low = 0,
 108                 .wakeup = 1,
 109         },
 110         {
 111                 .type   = EV_KEY,
 112                 .code   = KEY_RECORD,
 113                 .gpio   = (GPIO_PORTF + 14),
 114                 .desc   = "Record",
 115                 .active_low = 0,
 116                 .wakeup = 1,
 117         },
 118         {
 119                 .type   = EV_KEY,
 120                 .code   = KEY_STOP,
 121                 .gpio   = (GPIO_PORTF + 13),
 122                 .desc   = "Stop",
 123                 .active_low = 0,
 124                 .wakeup = 1,
 125         }
 126 };
 127
 128 static struct gpio_keys_platform_data visstrim_gpio_keys_platform_data = {
 129         .buttons        = visstrim_gpio_keys,
 130         .nbuttons       = ARRAY_SIZE(visstrim_gpio_keys),
 131 };
 132
 133 static struct platform_device visstrim_gpio_keys_device = {
 134         .name   = "gpio-keys",
 135         .id     = -1,
 136         .dev    = {
 137                 .platform_data  = &visstrim_gpio_keys_platform_data,
 138         },
 139 };
 140
 141 /* Visstrim_SM10 has a microSD slot connected to sdhc1 */
 142 static int visstrim_m10_sdhc1_init(struct device *dev,
 143                 irq_handler_t detect_irq, void *data)
 144 {
 145         int ret;
 146
 147         ret = request_irq(SDHC1_IRQ, detect_irq, IRQF_TRIGGER_FALLING,
 148                                 "mmc-detect", data);
 149         return ret;
 150 }
 151
 152 static void visstrim_m10_sdhc1_exit(struct device *dev, void *data)
 153 {
 154         free_irq(SDHC1_IRQ, data);
 155 }
 156
 157 static const struct imxmmc_platform_data visstrim_m10_sdhc_pdata __initconst = {
 158         .init = visstrim_m10_sdhc1_init,
 159         .exit = visstrim_m10_sdhc1_exit,
 160 };
 161
 162 /* Visstrim_SM10 NOR flash */
 163 static struct physmap_flash_data visstrim_m10_flash_data = {
 164         .width = 2,
 165 };
 166
 167 static struct resource visstrim_m10_flash_resource = {
 168         .start = 0xc0000000,
 169         .end = 0xc0000000 + SZ_64M - 1,
 170         .flags = IORESOURCE_MEM,
 171 };
 172
 173 static struct platform_device visstrim_m10_nor_mtd_device = {
 174         .name = "physmap-flash",
 175         .id = 0,
 176         .dev = {
 177                 .platform_data = &visstrim_m10_flash_data,
 178         },
 179         .num_resources = 1,
 180         .resource = &visstrim_m10_flash_resource,
 181 };
 182
 183 static struct platform_device *platform_devices[] __initdata = {
 184         &visstrim_gpio_keys_device,
 185         &visstrim_m10_nor_mtd_device,
 186 };
 187
 188 /* Visstrim_M10 uses UART0 as console */
 189 static const struct imxuart_platform_data uart_pdata __initconst = {
 190         .flags = IMXUART_HAVE_RTSCTS,
 191 };
 192
 193 /* I2C */
 194 static const struct imxi2c_platform_data visstrim_m10_i2c_data __initconst = {
 195         .bitrate = 100000,
 196 };
 197
 198 static struct pca953x_platform_data visstrim_m10_pca9555_pdata = {
 199         .gpio_base = 240, /* After MX27 internal GPIOs */
 200         .invert = 0,
 201 };
 202
 203 static struct i2c_board_info visstrim_m10_i2c_devices[] = {
 204         {
 205                 I2C_BOARD_INFO("pca9555", 0x20),
 206                 .platform_data = &visstrim_m10_pca9555_pdata,
 207         },
 208 };
 209
 210 /* USB OTG */
 211 static int otg_phy_init(struct platform_device *pdev)
 212 {
 213         gpio_set_value(OTG_PHY_CS_GPIO, 0);
 214
 215         mdelay(10);
 216
 217         return mx27_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 218 }
 219
 220 static const struct mxc_usbh_platform_data
 221 visstrim_m10_usbotg_pdata __initconst = {
 222         .init = otg_phy_init,
 223         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 224 };
 225
 226 static void __init visstrim_m10_board_init(void)
 227 {
 228         int ret;
 229
 230         ret = mxc_gpio_setup_multiple_pins(visstrim_m10_pins,
 231                         ARRAY_SIZE(visstrim_m10_pins), "VISSTRIM_M10");
 232         if (ret)
 233                 pr_err("Failed to setup pins (%d)\n", ret);
 234
 235         imx27_add_imx_uart0(&uart_pdata);
 236
 237         i2c_register_board_info(0, visstrim_m10_i2c_devices,
 238                                 ARRAY_SIZE(visstrim_m10_i2c_devices));
 239         imx27_add_imx_i2c(0, &visstrim_m10_i2c_data);
 240         imx27_add_imx_i2c(1, &visstrim_m10_i2c_data);
 241         imx27_add_mxc_mmc(0, &visstrim_m10_sdhc_pdata);
 242         imx27_add_mxc_ehci_otg(&visstrim_m10_usbotg_pdata);
 243         imx27_add_fec(NULL);
 244         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 245 }
 246
 247 static void __init visstrim_m10_timer_init(void)
 248 {
 249         mx27_clocks_init((unsigned long)25000000);
 250 }
 251
 252 static struct sys_timer visstrim_m10_timer = {
 253         .init   = visstrim_m10_timer_init,
 254 };
 255
 256 MACHINE_START(IMX27_VISSTRIM_M10, "Vista Silicon Visstrim_M10")
 257         .boot_params = MX27_PHYS_OFFSET + 0x100,
 258         .map_io = mx27_map_io,
 259         .init_early = imx27_init_early,
 260         .init_irq = mx27_init_irq,
 261         .timer = &visstrim_m10_timer,
 262         .init_machine = visstrim_m10_board_init,
 263 MACHINE_END