arch/arm/mach-mx3/mx31moboard-devboard.c

   1 /*
   2  * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include <linux/gpio.h>
  20 #include <linux/init.h>
  21 #include <linux/interrupt.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/types.h>
  24
  25 #include <linux/usb/otg.h>
  26
  27 #include <mach/common.h>
  28 #include <mach/imx-uart.h>
  29 #include <mach/iomux-mx3.h>
  30 #include <mach/hardware.h>
  31 #include <mach/mmc.h>
  32 #include <mach/mxc_ehci.h>
  33 #include <mach/ulpi.h>
  34
  35 #include "devices.h"
  36
  37 static unsigned int devboard_pins[] = {
  38         /* UART1 */
  39         MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
  40         MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
  41         /* SDHC2 */
  42         MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
  43         MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
  44         MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
  45         MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
  46         /* USB H1 */
  47         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  48         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  49         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  50         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  51         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  52 };
  53
  54 static struct imxuart_platform_data uart_pdata = {
  55         .flags = IMXUART_HAVE_RTSCTS,
  56 };
  57
  58 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  59 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  60
  61 static int devboard_sdhc2_get_ro(struct device *dev)
  62 {
  63         return !gpio_get_value(SDHC2_WP);
  64 }
  65
  66 static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  67                 void *data)
  68 {
  69         int ret;
  70
  71         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  72         if (ret)
  73                 return ret;
  74
  75         gpio_direction_input(SDHC2_CD);
  76
  77         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  78         if (ret)
  79                 goto err_gpio_free;
  80         gpio_direction_input(SDHC2_WP);
  81
  82         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  83                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  84                 "sdhc2-card-detect", data);
  85         if (ret)
  86                 goto err_gpio_free_2;
  87
  88         return 0;
  89
  90 err_gpio_free_2:
  91         gpio_free(SDHC2_WP);
  92 err_gpio_free:
  93         gpio_free(SDHC2_CD);
  94
  95         return ret;
  96 }
  97
  98 static void devboard_sdhc2_exit(struct device *dev, void *data)
  99 {
 100         free_irq(gpio_to_irq(SDHC2_CD), data);
 101         gpio_free(SDHC2_WP);
 102         gpio_free(SDHC2_CD);
 103 }
 104
 105 static struct imxmmc_platform_data sdhc2_pdata = {
 106         .get_ro = devboard_sdhc2_get_ro,
 107         .init   = devboard_sdhc2_init,
 108         .exit   = devboard_sdhc2_exit,
 109 };
 110
 111 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 112                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 113
 114 static int devboard_usbh1_hw_init(struct platform_device *pdev)
 115 {
 116         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 117
 118         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 119         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 120         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 121         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 122         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 123         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 124         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 125         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 126
 127         return 0;
 128 }
 129
 130 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 131 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 132
 133 static int devboard_isp1105_init(struct otg_transceiver *otg)
 134 {
 135         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 136         if (ret)
 137                 return ret;
 138         /* single ended */
 139         gpio_direction_output(USBH1_MODE, 0);
 140
 141         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 142         if (ret) {
 143                 gpio_free(USBH1_MODE);
 144                 return ret;
 145         }
 146         gpio_direction_output(USBH1_VBUSEN_B, 1);
 147
 148         return 0;
 149 }
 150
 151
 152 static int devboard_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
 153 {
 154         if (on)
 155                 gpio_set_value(USBH1_VBUSEN_B, 0);
 156         else
 157                 gpio_set_value(USBH1_VBUSEN_B, 1);
 158
 159         return 0;
 160 }
 161
 162 static struct mxc_usbh_platform_data usbh1_pdata = {
 163         .init   = devboard_usbh1_hw_init,
 164         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 165         .flags  = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI,
 166 };
 167
 168 static int __init devboard_usbh1_init(void)
 169 {
 170         struct otg_transceiver *otg;
 171
 172         otg = kzalloc(sizeof(*otg), GFP_KERNEL);
 173         if (!otg)
 174                 return -ENOMEM;
 175
 176         otg->label      = "ISP1105";
 177         otg->init       = devboard_isp1105_init;
 178         otg->set_vbus   = devboard_isp1105_set_vbus;
 179
 180         usbh1_pdata.otg = otg;
 181
 182         return mxc_register_device(&mx31_usbh1, &usbh1_pdata);
 183 }
 184
 185 /*
 186  * system init for baseboard usage. Will be called by mx31moboard init.
 187  */
 188 void __init mx31moboard_devboard_init(void)
 189 {
 190         printk(KERN_INFO "Initializing mx31devboard peripherals\n");
 191
 192         mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
 193                 "devboard");
 194
 195         mxc_register_device(&mxc_uart_device1, &uart_pdata);
 196
 197         mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);
 198
 199         devboard_usbh1_init();
 200 }