arch/arm/mach-imx/mx31moboard-marxbot.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/delay.h>
  16 #include <linux/gpio.h>
  17 #include <linux/init.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/i2c.h>
  20 #include <linux/spi/spi.h>
  21 #include <linux/slab.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/types.h>
  24
  25 #include <linux/usb/otg.h>
  26
  27 #include <media/soc_camera.h>
  28
  29 #include "common.h"
  30 #include "devices-imx31.h"
  31 #include "ehci.h"
  32 #include "hardware.h"
  33 #include "iomux-mx3.h"
  34 #include "ulpi.h"
  35
  36 static unsigned int marxbot_pins[] = {
  37         /* SDHC2 */
  38         MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
  39         MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
  40         MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
  41         MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
  42         /* CSI */
  43         MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
  44         MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
  45         MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
  46         MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
  47         MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
  48         MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
  49         MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
  50         MX31_PIN_CSI_D4__GPIO3_4, MX31_PIN_CSI_D5__GPIO3_5,
  51         MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
  52         MX31_PIN_TXD2__GPIO1_28,
  53         /* dsPIC resets */
  54         MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22,
  55         /*battery detection */
  56         MX31_PIN_LCS0__GPIO3_23,
  57         /* USB H1 */
  58         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  59         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  60         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  61         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  62         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  63         /* SEL */
  64         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  65         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  66 };
  67
  68 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  69 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  70
  71 static int marxbot_sdhc2_get_ro(struct device *dev)
  72 {
  73         return !gpio_get_value(SDHC2_WP);
  74 }
  75
  76 static int marxbot_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  77                 void *data)
  78 {
  79         int ret;
  80
  81         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  82         if (ret)
  83                 return ret;
  84
  85         gpio_direction_input(SDHC2_CD);
  86
  87         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  88         if (ret)
  89                 goto err_gpio_free;
  90         gpio_direction_input(SDHC2_WP);
  91
  92         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  93                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  94                 "sdhc2-card-detect", data);
  95         if (ret)
  96                 goto err_gpio_free_2;
  97
  98         return 0;
  99
 100 err_gpio_free_2:
 101         gpio_free(SDHC2_WP);
 102 err_gpio_free:
 103         gpio_free(SDHC2_CD);
 104
 105         return ret;
 106 }
 107
 108 static void marxbot_sdhc2_exit(struct device *dev, void *data)
 109 {
 110         free_irq(gpio_to_irq(SDHC2_CD), data);
 111         gpio_free(SDHC2_WP);
 112         gpio_free(SDHC2_CD);
 113 }
 114
 115 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
 116         .get_ro = marxbot_sdhc2_get_ro,
 117         .init   = marxbot_sdhc2_init,
 118         .exit   = marxbot_sdhc2_exit,
 119 };
 120
 121 #define TRSLAT_RST_B    IOMUX_TO_GPIO(MX31_PIN_STXD5)
 122 #define DSPICS_RST_B    IOMUX_TO_GPIO(MX31_PIN_SRXD5)
 123
 124 static void dspics_resets_init(void)
 125 {
 126         if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
 127                 gpio_direction_output(TRSLAT_RST_B, 0);
 128                 gpio_export(TRSLAT_RST_B, false);
 129         }
 130
 131         if (!gpio_request(DSPICS_RST_B, "dspics-rst")) {
 132                 gpio_direction_output(DSPICS_RST_B, 0);
 133                 gpio_export(DSPICS_RST_B, false);
 134         }
 135 }
 136
 137 static struct spi_board_info marxbot_spi_board_info[] __initdata = {
 138         {
 139                 .modalias = "spidev",
 140                 .max_speed_hz = 300000,
 141                 .bus_num = 1,
 142                 .chip_select = 1, /* according spi1_cs[] ! */
 143         },
 144 };
 145
 146 #define TURRETCAM_POWER IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
 147 #define BASECAM_POWER   IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
 148 #define TURRETCAM_RST_B IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
 149 #define BASECAM_RST_B   IOMUX_TO_GPIO(MX31_PIN_CSI_D4)
 150 #define CAM_CHOICE      IOMUX_TO_GPIO(MX31_PIN_TXD2)
 151
 152 static int marxbot_basecam_power(struct device *dev, int on)
 153 {
 154         gpio_set_value(BASECAM_POWER, !on);
 155         return 0;
 156 }
 157
 158 static int marxbot_basecam_reset(struct device *dev)
 159 {
 160         gpio_set_value(BASECAM_RST_B, 0);
 161         udelay(100);
 162         gpio_set_value(BASECAM_RST_B, 1);
 163         return 0;
 164 }
 165
 166 static struct i2c_board_info marxbot_i2c_devices[] = {
 167         {
 168                 I2C_BOARD_INFO("mt9t031", 0x5d),
 169         },
 170 };
 171
 172 static struct soc_camera_link base_iclink = {
 173         .bus_id         = 0,            /* Must match with the camera ID */
 174         .power          = marxbot_basecam_power,
 175         .reset          = marxbot_basecam_reset,
 176         .board_info     = &marxbot_i2c_devices[0],
 177         .i2c_adapter_id = 0,
 178 };
 179
 180 static struct platform_device marxbot_camera[] = {
 181         {
 182                 .name   = "soc-camera-pdrv",
 183                 .id     = 0,
 184                 .dev    = {
 185                         .platform_data = &base_iclink,
 186                 },
 187         },
 188 };
 189
 190 static struct platform_device *marxbot_cameras[] __initdata = {
 191         &marxbot_camera[0],
 192 };
 193
 194 static int __init marxbot_cam_init(void)
 195 {
 196         int ret = gpio_request(CAM_CHOICE, "cam-choice");
 197         if (ret)
 198                 return ret;
 199         gpio_direction_output(CAM_CHOICE, 0);
 200
 201         ret = gpio_request(BASECAM_RST_B, "basecam-reset");
 202         if (ret)
 203                 return ret;
 204         gpio_direction_output(BASECAM_RST_B, 1);
 205         ret = gpio_request(BASECAM_POWER, "basecam-standby");
 206         if (ret)
 207                 return ret;
 208         gpio_direction_output(BASECAM_POWER, 0);
 209
 210         ret = gpio_request(TURRETCAM_RST_B, "turretcam-reset");
 211         if (ret)
 212                 return ret;
 213         gpio_direction_output(TURRETCAM_RST_B, 1);
 214         ret = gpio_request(TURRETCAM_POWER, "turretcam-standby");
 215         if (ret)
 216                 return ret;
 217         gpio_direction_output(TURRETCAM_POWER, 0);
 218
 219         return 0;
 220 }
 221
 222 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 223 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 224 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 225 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 226
 227 static void marxbot_init_sel_gpios(void)
 228 {
 229         if (!gpio_request(SEL0, "sel0")) {
 230                 gpio_direction_input(SEL0);
 231                 gpio_export(SEL0, true);
 232         }
 233
 234         if (!gpio_request(SEL1, "sel1")) {
 235                 gpio_direction_input(SEL1);
 236                 gpio_export(SEL1, true);
 237         }
 238
 239         if (!gpio_request(SEL2, "sel2")) {
 240                 gpio_direction_input(SEL2);
 241                 gpio_export(SEL2, true);
 242         }
 243
 244         if (!gpio_request(SEL3, "sel3")) {
 245                 gpio_direction_input(SEL3);
 246                 gpio_export(SEL3, true);
 247         }
 248 }
 249
 250 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 251                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 252
 253 static int marxbot_usbh1_hw_init(struct platform_device *pdev)
 254 {
 255         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 256
 257         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 258         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 259         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 260         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 261         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 262         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 263         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 264         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 265
 266         mdelay(10);
 267
 268         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
 269                         MXC_EHCI_INTERFACE_SINGLE_UNI);
 270 }
 271
 272 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 273 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 274
 275 static int marxbot_isp1105_init(struct usb_phy *otg)
 276 {
 277         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 278         if (ret)
 279                 return ret;
 280         /* single ended */
 281         gpio_direction_output(USBH1_MODE, 0);
 282
 283         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 284         if (ret) {
 285                 gpio_free(USBH1_MODE);
 286                 return ret;
 287         }
 288         gpio_direction_output(USBH1_VBUSEN_B, 1);
 289
 290         return 0;
 291 }
 292
 293
 294 static int marxbot_isp1105_set_vbus(struct usb_otg *otg, bool on)
 295 {
 296         if (on)
 297                 gpio_set_value(USBH1_VBUSEN_B, 0);
 298         else
 299                 gpio_set_value(USBH1_VBUSEN_B, 1);
 300
 301         return 0;
 302 }
 303
 304 static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
 305         .init   = marxbot_usbh1_hw_init,
 306         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 307 };
 308
 309 static int __init marxbot_usbh1_init(void)
 310 {
 311         struct usb_phy *phy;
 312         struct platform_device *pdev;
 313
 314         phy = kzalloc(sizeof(*phy), GFP_KERNEL);
 315         if (!phy)
 316                 return -ENOMEM;
 317
 318         phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
 319         if (!phy->otg) {
 320                 kfree(phy);
 321                 return -ENOMEM;
 322         }
 323
 324         phy->label      = "ISP1105";
 325         phy->init       = marxbot_isp1105_init;
 326         phy->otg->set_vbus      = marxbot_isp1105_set_vbus;
 327
 328         usbh1_pdata.otg = phy;
 329
 330         pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
 331
 332         return PTR_ERR_OR_ZERO(pdev);
 333 }
 334
 335 static const struct fsl_usb2_platform_data usb_pdata __initconst = {
 336         .operating_mode = FSL_USB2_DR_DEVICE,
 337         .phy_mode       = FSL_USB2_PHY_ULPI,
 338 };
 339
 340 /*
 341  * system init for baseboard usage. Will be called by mx31moboard init.
 342  */
 343 void __init mx31moboard_marxbot_init(void)
 344 {
 345         printk(KERN_INFO "Initializing mx31marxbot peripherals\n");
 346
 347         mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins),
 348                 "marxbot");
 349
 350         marxbot_init_sel_gpios();
 351
 352         dspics_resets_init();
 353
 354         imx31_add_mxc_mmc(1, &sdhc2_pdata);
 355
 356         spi_register_board_info(marxbot_spi_board_info,
 357                 ARRAY_SIZE(marxbot_spi_board_info));
 358
 359         marxbot_cam_init();
 360         platform_add_devices(marxbot_cameras, ARRAY_SIZE(marxbot_cameras));
 361
 362         /* battery present pin */
 363         gpio_request(IOMUX_TO_GPIO(MX31_PIN_LCS0), "bat-present");
 364         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_LCS0));
 365         gpio_export(IOMUX_TO_GPIO(MX31_PIN_LCS0), false);
 366
 367         imx31_add_fsl_usb2_udc(&usb_pdata);
 368
 369         marxbot_usbh1_init();
 370 }