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 <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
  44 static 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 */
 100 static 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
 127 static struct gpio_keys_platform_data visstrim_gpio_keys_platform_data = {
 128         .buttons        = visstrim_gpio_keys,
 129         .nbuttons       = ARRAY_SIZE(visstrim_gpio_keys),
 130 };
 131
 132 static 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 */
 141 static 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
 151 static void visstrim_m10_sdhc1_exit(struct device *dev, void *data)
 152 {
 153         free_irq(SDHC1_IRQ, data);
 154 }
 155
 156 static 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 */
 162 static struct physmap_flash_data visstrim_m10_flash_data = {
 163         .width = 2,
 164 };
 165
 166 static struct resource visstrim_m10_flash_resource = {
 167         .start = 0xc0000000,
 168         .end = 0xc0000000 + SZ_64M - 1,
 169         .flags = IORESOURCE_MEM,
 170 };
 171
 172 static 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
 182 static 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 */
 188 static const struct imxuart_platform_data uart_pdata __initconst = {
 189         .flags = IMXUART_HAVE_RTSCTS,
 190 };
 191
 192 /* I2C */
 193 static const struct imxi2c_platform_data visstrim_m10_i2c_data __initconst = {
 194         .bitrate = 100000,
 195 };
 196
 197 static struct pca953x_platform_data visstrim_m10_pca9555_pdata = {
 198         .gpio_base = 240, /* After MX27 internal GPIOs */
 199         .invert = 0,
 200 };
 201
 202 static 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 */
 210 static int otg_phy_init(struct platform_device *pdev)
 211 {
 212         gpio_set_value(OTG_PHY_CS_GPIO, 0);
 213         return 0;
 214 }
 215
 216 static const struct mxc_usbh_platform_data
 217 visstrim_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
 223 static 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
 244 static void __init visstrim_m10_timer_init(void)
 245 {
 246         mx27_clocks_init((unsigned long)25000000);
 247 }
 248
 249 static struct sys_timer visstrim_m10_timer = {
 250         .init   = visstrim_m10_timer_init,
 251 };
 252
 253 MACHINE_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,
 259 MACHINE_END