release/src-rt-6.x.4708/linux/linux-2.6.36/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
  15 #include <linux/gpio.h>
  16 #include <linux/init.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/slab.h>
  20 #include <linux/types.h>
  21 #include <linux/fsl_devices.h>
  22
  23 #include <linux/usb/otg.h>
  24
  25 #include <mach/common.h>
  26 #include <mach/iomux-mx3.h>
  27 #include <mach/hardware.h>
  28 #include <mach/mmc.h>
  29 #include <mach/mxc_ehci.h>
  30 #include <mach/ulpi.h>
  31
  32 #include "devices-imx31.h"
  33 #include "devices.h"
  34
  35 static unsigned int devboard_pins[] = {
  36         /* UART1 */
  37         MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
  38         MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
  39         /* SDHC2 */
  40         MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
  41         MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
  42         MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
  43         MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
  44         /* USB H1 */
  45         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  46         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  47         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  48         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  49         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  50         /* SEL */
  51         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  52         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  53 };
  54
  55 static const struct imxuart_platform_data uart_pdata __initconst = {
  56         .flags = IMXUART_HAVE_RTSCTS,
  57 };
  58
  59 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  60 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  61
  62 static int devboard_sdhc2_get_ro(struct device *dev)
  63 {
  64         return !gpio_get_value(SDHC2_WP);
  65 }
  66
  67 static int devboard_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  68                 void *data)
  69 {
  70         int ret;
  71
  72         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  73         if (ret)
  74                 return ret;
  75
  76         gpio_direction_input(SDHC2_CD);
  77
  78         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  79         if (ret)
  80                 goto err_gpio_free;
  81         gpio_direction_input(SDHC2_WP);
  82
  83         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  84                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  85                 "sdhc2-card-detect", data);
  86         if (ret)
  87                 goto err_gpio_free_2;
  88
  89         return 0;
  90
  91 err_gpio_free_2:
  92         gpio_free(SDHC2_WP);
  93 err_gpio_free:
  94         gpio_free(SDHC2_CD);
  95
  96         return ret;
  97 }
  98
  99 static void devboard_sdhc2_exit(struct device *dev, void *data)
 100 {
 101         free_irq(gpio_to_irq(SDHC2_CD), data);
 102         gpio_free(SDHC2_WP);
 103         gpio_free(SDHC2_CD);
 104 }
 105
 106 static struct imxmmc_platform_data sdhc2_pdata = {
 107         .get_ro = devboard_sdhc2_get_ro,
 108         .init   = devboard_sdhc2_init,
 109         .exit   = devboard_sdhc2_exit,
 110 };
 111
 112 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 113 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 114 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 115 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 116
 117 static void devboard_init_sel_gpios(void)
 118 {
 119         if (!gpio_request(SEL0, "sel0")) {
 120                 gpio_direction_input(SEL0);
 121                 gpio_export(SEL0, true);
 122         }
 123
 124         if (!gpio_request(SEL1, "sel1")) {
 125                 gpio_direction_input(SEL1);
 126                 gpio_export(SEL1, true);
 127         }
 128
 129         if (!gpio_request(SEL2, "sel2")) {
 130                 gpio_direction_input(SEL2);
 131                 gpio_export(SEL2, true);
 132         }
 133
 134         if (!gpio_request(SEL3, "sel3")) {
 135                 gpio_direction_input(SEL3);
 136                 gpio_export(SEL3, true);
 137         }
 138 }
 139 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 140                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 141
 142 static int devboard_usbh1_hw_init(struct platform_device *pdev)
 143 {
 144         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 145
 146         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 147         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 148         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 149         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 150         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 151         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 152         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 153         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 154
 155         return 0;
 156 }
 157
 158 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 159 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 160
 161 static int devboard_isp1105_init(struct otg_transceiver *otg)
 162 {
 163         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 164         if (ret)
 165                 return ret;
 166         /* single ended */
 167         gpio_direction_output(USBH1_MODE, 0);
 168
 169         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 170         if (ret) {
 171                 gpio_free(USBH1_MODE);
 172                 return ret;
 173         }
 174         gpio_direction_output(USBH1_VBUSEN_B, 1);
 175
 176         return 0;
 177 }
 178
 179
 180 static int devboard_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
 181 {
 182         if (on)
 183                 gpio_set_value(USBH1_VBUSEN_B, 0);
 184         else
 185                 gpio_set_value(USBH1_VBUSEN_B, 1);
 186
 187         return 0;
 188 }
 189
 190 static struct mxc_usbh_platform_data usbh1_pdata = {
 191         .init   = devboard_usbh1_hw_init,
 192         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 193         .flags  = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI,
 194 };
 195
 196 static int __init devboard_usbh1_init(void)
 197 {
 198         struct otg_transceiver *otg;
 199
 200         otg = kzalloc(sizeof(*otg), GFP_KERNEL);
 201         if (!otg)
 202                 return -ENOMEM;
 203
 204         otg->label      = "ISP1105";
 205         otg->init       = devboard_isp1105_init;
 206         otg->set_vbus   = devboard_isp1105_set_vbus;
 207
 208         usbh1_pdata.otg = otg;
 209
 210         return mxc_register_device(&mxc_usbh1, &usbh1_pdata);
 211 }
 212
 213
 214 static struct fsl_usb2_platform_data usb_pdata = {
 215         .operating_mode = FSL_USB2_DR_DEVICE,
 216         .phy_mode       = FSL_USB2_PHY_ULPI,
 217 };
 218
 219 /*
 220  * system init for baseboard usage. Will be called by mx31moboard init.
 221  */
 222 void __init mx31moboard_devboard_init(void)
 223 {
 224         printk(KERN_INFO "Initializing mx31devboard peripherals\n");
 225
 226         mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
 227                 "devboard");
 228
 229         imx31_add_imx_uart1(&uart_pdata);
 230
 231         mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);
 232
 233         devboard_init_sel_gpios();
 234
 235         mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
 236
 237         devboard_usbh1_init();
 238 }