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 "hardware.h"
  32 #include "iomux-mx3.h"
  33 #include "ulpi.h"
  34
  35 static unsigned int marxbot_pins[] = {
  36         /* SDHC2 */
  37         MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
  38         MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
  39         MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
  40         MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
  41         /* CSI */
  42         MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
  43         MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
  44         MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
  45         MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
  46         MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
  47         MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
  48         MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
  49         MX31_PIN_CSI_D4__GPIO3_4, MX31_PIN_CSI_D5__GPIO3_5,
  50         MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
  51         MX31_PIN_TXD2__GPIO1_28,
  52         /* dsPIC resets */
  53         MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22,
  54         /*battery detection */
  55         MX31_PIN_LCS0__GPIO3_23,
  56         /* USB H1 */
  57         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  58         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  59         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  60         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  61         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  62         /* SEL */
  63         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  64         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  65 };
  66
  67 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  68 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  69
  70 static int marxbot_sdhc2_get_ro(struct device *dev)
  71 {
  72         return !gpio_get_value(SDHC2_WP);
  73 }
  74
  75 static int marxbot_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  76                 void *data)
  77 {
  78         int ret;
  79
  80         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  81         if (ret)
  82                 return ret;
  83
  84         gpio_direction_input(SDHC2_CD);
  85
  86         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  87         if (ret)
  88                 goto err_gpio_free;
  89         gpio_direction_input(SDHC2_WP);
  90
  91         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  92                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  93                 "sdhc2-card-detect", data);
  94         if (ret)
  95                 goto err_gpio_free_2;
  96
  97         return 0;
  98
  99 err_gpio_free_2:
 100         gpio_free(SDHC2_WP);
 101 err_gpio_free:
 102         gpio_free(SDHC2_CD);
 103
 104         return ret;
 105 }
 106
 107 static void marxbot_sdhc2_exit(struct device *dev, void *data)
 108 {
 109         free_irq(gpio_to_irq(SDHC2_CD), data);
 110         gpio_free(SDHC2_WP);
 111         gpio_free(SDHC2_CD);
 112 }
 113
 114 static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
 115         .get_ro = marxbot_sdhc2_get_ro,
 116         .init   = marxbot_sdhc2_init,
 117         .exit   = marxbot_sdhc2_exit,
 118 };
 119
 120 #define TRSLAT_RST_B    IOMUX_TO_GPIO(MX31_PIN_STXD5)
 121 #define DSPICS_RST_B    IOMUX_TO_GPIO(MX31_PIN_SRXD5)
 122
 123 static void dspics_resets_init(void)
 124 {
 125         if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
 126                 gpio_direction_output(TRSLAT_RST_B, 0);
 127                 gpio_export(TRSLAT_RST_B, false);
 128         }
 129
 130         if (!gpio_request(DSPICS_RST_B, "dspics-rst")) {
 131                 gpio_direction_output(DSPICS_RST_B, 0);
 132                 gpio_export(DSPICS_RST_B, false);
 133         }
 134 }
 135
 136 static struct spi_board_info marxbot_spi_board_info[] __initdata = {
 137         {
 138                 .modalias = "spidev",
 139                 .max_speed_hz = 300000,
 140                 .bus_num = 1,
 141                 .chip_select = 1, /* according spi1_cs[] ! */
 142         },
 143 };
 144
 145 #define TURRETCAM_POWER IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
 146 #define BASECAM_POWER   IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
 147 #define TURRETCAM_RST_B IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
 148 #define BASECAM_RST_B   IOMUX_TO_GPIO(MX31_PIN_CSI_D4)
 149 #define CAM_CHOICE      IOMUX_TO_GPIO(MX31_PIN_TXD2)
 150
 151 static int marxbot_basecam_power(struct device *dev, int on)
 152 {
 153         gpio_set_value(BASECAM_POWER, !on);
 154         return 0;
 155 }
 156
 157 static int marxbot_basecam_reset(struct device *dev)
 158 {
 159         gpio_set_value(BASECAM_RST_B, 0);
 160         udelay(100);
 161         gpio_set_value(BASECAM_RST_B, 1);
 162         return 0;
 163 }
 164
 165 static struct i2c_board_info marxbot_i2c_devices[] = {
 166         {
 167                 I2C_BOARD_INFO("mt9t031", 0x5d),
 168         },
 169 };
 170
 171 static struct soc_camera_link base_iclink = {
 172         .bus_id         = 0,            /* Must match with the camera ID */
 173         .power          = marxbot_basecam_power,
 174         .reset          = marxbot_basecam_reset,
 175         .board_info     = &marxbot_i2c_devices[0],
 176         .i2c_adapter_id = 0,
 177 };
 178
 179 static struct platform_device marxbot_camera[] = {
 180         {
 181                 .name   = "soc-camera-pdrv",
 182                 .id     = 0,
 183                 .dev    = {
 184                         .platform_data = &base_iclink,
 185                 },
 186         },
 187 };
 188
 189 static struct platform_device *marxbot_cameras[] __initdata = {
 190         &marxbot_camera[0],
 191 };
 192
 193 static int __init marxbot_cam_init(void)
 194 {
 195         int ret = gpio_request(CAM_CHOICE, "cam-choice");
 196         if (ret)
 197                 return ret;
 198         gpio_direction_output(CAM_CHOICE, 0);
 199
 200         ret = gpio_request(BASECAM_RST_B, "basecam-reset");
 201         if (ret)
 202                 return ret;
 203         gpio_direction_output(BASECAM_RST_B, 1);
 204         ret = gpio_request(BASECAM_POWER, "basecam-standby");
 205         if (ret)
 206                 return ret;
 207         gpio_direction_output(BASECAM_POWER, 0);
 208
 209         ret = gpio_request(TURRETCAM_RST_B, "turretcam-reset");
 210         if (ret)
 211                 return ret;
 212         gpio_direction_output(TURRETCAM_RST_B, 1);
 213         ret = gpio_request(TURRETCAM_POWER, "turretcam-standby");
 214         if (ret)
 215                 return ret;
 216         gpio_direction_output(TURRETCAM_POWER, 0);
 217
 218         return 0;
 219 }
 220
 221 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 222 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 223 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 224 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 225
 226 static void marxbot_init_sel_gpios(void)
 227 {
 228         if (!gpio_request(SEL0, "sel0")) {
 229                 gpio_direction_input(SEL0);
 230                 gpio_export(SEL0, true);
 231         }
 232
 233         if (!gpio_request(SEL1, "sel1")) {
 234                 gpio_direction_input(SEL1);
 235                 gpio_export(SEL1, true);
 236         }
 237
 238         if (!gpio_request(SEL2, "sel2")) {
 239                 gpio_direction_input(SEL2);
 240                 gpio_export(SEL2, true);
 241         }
 242
 243         if (!gpio_request(SEL3, "sel3")) {
 244                 gpio_direction_input(SEL3);
 245                 gpio_export(SEL3, true);
 246         }
 247 }
 248
 249 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 250                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 251
 252 static int marxbot_usbh1_hw_init(struct platform_device *pdev)
 253 {
 254         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 255
 256         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 257         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 258         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 259         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 260         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 261         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 262         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 263         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 264
 265         mdelay(10);
 266
 267         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
 268                         MXC_EHCI_INTERFACE_SINGLE_UNI);
 269 }
 270
 271 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 272 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 273
 274 static int marxbot_isp1105_init(struct usb_phy *otg)
 275 {
 276         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 277         if (ret)
 278                 return ret;
 279         /* single ended */
 280         gpio_direction_output(USBH1_MODE, 0);
 281
 282         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 283         if (ret) {
 284                 gpio_free(USBH1_MODE);
 285                 return ret;
 286         }
 287         gpio_direction_output(USBH1_VBUSEN_B, 1);
 288
 289         return 0;
 290 }
 291
 292
 293 static int marxbot_isp1105_set_vbus(struct usb_otg *otg, bool on)
 294 {
 295         if (on)
 296                 gpio_set_value(USBH1_VBUSEN_B, 0);
 297         else
 298                 gpio_set_value(USBH1_VBUSEN_B, 1);
 299
 300         return 0;
 301 }
 302
 303 static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
 304         .init   = marxbot_usbh1_hw_init,
 305         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 306 };
 307
 308 static int __init marxbot_usbh1_init(void)
 309 {
 310         struct usb_phy *phy;
 311         struct platform_device *pdev;
 312
 313         phy = kzalloc(sizeof(*phy), GFP_KERNEL);
 314         if (!phy)
 315                 return -ENOMEM;
 316
 317         phy->otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
 318         if (!phy->otg) {
 319                 kfree(phy);
 320                 return -ENOMEM;
 321         }
 322
 323         phy->label      = "ISP1105";
 324         phy->init       = marxbot_isp1105_init;
 325         phy->otg->set_vbus      = marxbot_isp1105_set_vbus;
 326
 327         usbh1_pdata.otg = phy;
 328
 329         pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
 330         if (IS_ERR(pdev))
 331                 return PTR_ERR(pdev);
 332
 333         return 0;
 334 }
 335
 336 static const struct fsl_usb2_platform_data usb_pdata __initconst = {
 337         .operating_mode = FSL_USB2_DR_DEVICE,
 338         .phy_mode       = FSL_USB2_PHY_ULPI,
 339 };
 340
 341 /*
 342  * system init for baseboard usage. Will be called by mx31moboard init.
 343  */
 344 void __init mx31moboard_marxbot_init(void)
 345 {
 346         printk(KERN_INFO "Initializing mx31marxbot peripherals\n");
 347
 348         mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins),
 349                 "marxbot");
 350
 351         marxbot_init_sel_gpios();
 352
 353         dspics_resets_init();
 354
 355         imx31_add_mxc_mmc(1, &sdhc2_pdata);
 356
 357         spi_register_board_info(marxbot_spi_board_info,
 358                 ARRAY_SIZE(marxbot_spi_board_info));
 359
 360         marxbot_cam_init();
 361         platform_add_devices(marxbot_cameras, ARRAY_SIZE(marxbot_cameras));
 362
 363         /* battery present pin */
 364         gpio_request(IOMUX_TO_GPIO(MX31_PIN_LCS0), "bat-present");
 365         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_LCS0));
 366         gpio_export(IOMUX_TO_GPIO(MX31_PIN_LCS0), false);
 367
 368         imx31_add_fsl_usb2_udc(&usb_pdata);
 369
 370         marxbot_usbh1_init();
 371 }