arch/arm/mach-mx3/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 #include <linux/fsl_devices.h>
  25
  26 #include <linux/usb/otg.h>
  27
  28 #include <mach/common.h>
  29 #include <mach/hardware.h>
  30 #include <mach/imx-uart.h>
  31 #include <mach/iomux-mx3.h>
  32 #include <mach/mmc.h>
  33 #include <mach/mxc_ehci.h>
  34 #include <mach/ulpi.h>
  35
  36 #include <media/soc_camera.h>
  37
  38 #include "devices.h"
  39
  40 static unsigned int marxbot_pins[] = {
  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         /* CSI */
  47         MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
  48         MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
  49         MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
  50         MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
  51         MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
  52         MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
  53         MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
  54         MX31_PIN_CSI_D4__GPIO3_4, MX31_PIN_CSI_D5__GPIO3_5,
  55         MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
  56         MX31_PIN_TXD2__GPIO1_28,
  57         /* dsPIC resets */
  58         MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22,
  59         /*battery detection */
  60         MX31_PIN_LCS0__GPIO3_23,
  61         /* USB H1 */
  62         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  63         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  64         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  65         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  66         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  67         /* SEL */
  68         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  69         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  70 };
  71
  72 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  73 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  74
  75 static int marxbot_sdhc2_get_ro(struct device *dev)
  76 {
  77         return !gpio_get_value(SDHC2_WP);
  78 }
  79
  80 static int marxbot_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  81                 void *data)
  82 {
  83         int ret;
  84
  85         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  86         if (ret)
  87                 return ret;
  88
  89         gpio_direction_input(SDHC2_CD);
  90
  91         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  92         if (ret)
  93                 goto err_gpio_free;
  94         gpio_direction_input(SDHC2_WP);
  95
  96         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  97                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  98                 "sdhc2-card-detect", data);
  99         if (ret)
 100                 goto err_gpio_free_2;
 101
 102         return 0;
 103
 104 err_gpio_free_2:
 105         gpio_free(SDHC2_WP);
 106 err_gpio_free:
 107         gpio_free(SDHC2_CD);
 108
 109         return ret;
 110 }
 111
 112 static void marxbot_sdhc2_exit(struct device *dev, void *data)
 113 {
 114         free_irq(gpio_to_irq(SDHC2_CD), data);
 115         gpio_free(SDHC2_WP);
 116         gpio_free(SDHC2_CD);
 117 }
 118
 119 static struct imxmmc_platform_data sdhc2_pdata = {
 120         .get_ro = marxbot_sdhc2_get_ro,
 121         .init   = marxbot_sdhc2_init,
 122         .exit   = marxbot_sdhc2_exit,
 123 };
 124
 125 #define TRSLAT_RST_B    IOMUX_TO_GPIO(MX31_PIN_STXD5)
 126 #define DSPICS_RST_B    IOMUX_TO_GPIO(MX31_PIN_SRXD5)
 127
 128 static void dspics_resets_init(void)
 129 {
 130         if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
 131                 gpio_direction_output(TRSLAT_RST_B, 0);
 132                 gpio_export(TRSLAT_RST_B, false);
 133         }
 134
 135         if (!gpio_request(DSPICS_RST_B, "dspics-rst")) {
 136                 gpio_direction_output(DSPICS_RST_B, 0);
 137                 gpio_export(DSPICS_RST_B, false);
 138         }
 139 }
 140
 141 static struct spi_board_info marxbot_spi_board_info[] __initdata = {
 142         {
 143                 .modalias = "spidev",
 144                 .max_speed_hz = 300000,
 145                 .bus_num = 1,
 146                 .chip_select = 1, /* according spi1_cs[] ! */
 147         },
 148 };
 149
 150 #define TURRETCAM_POWER IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
 151 #define BASECAM_POWER   IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
 152 #define TURRETCAM_RST_B IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
 153 #define BASECAM_RST_B   IOMUX_TO_GPIO(MX31_PIN_CSI_D4)
 154 #define CAM_CHOICE      IOMUX_TO_GPIO(MX31_PIN_TXD2)
 155
 156 static int marxbot_basecam_power(struct device *dev, int on)
 157 {
 158         gpio_set_value(BASECAM_POWER, !on);
 159         return 0;
 160 }
 161
 162 static int marxbot_basecam_reset(struct device *dev)
 163 {
 164         gpio_set_value(BASECAM_RST_B, 0);
 165         udelay(100);
 166         gpio_set_value(BASECAM_RST_B, 1);
 167         return 0;
 168 }
 169
 170 static struct i2c_board_info marxbot_i2c_devices[] = {
 171         {
 172                 I2C_BOARD_INFO("mt9t031", 0x5d),
 173         },
 174 };
 175
 176 static struct soc_camera_link base_iclink = {
 177         .bus_id         = 0,            /* Must match with the camera ID */
 178         .power          = marxbot_basecam_power,
 179         .reset          = marxbot_basecam_reset,
 180         .board_info     = &marxbot_i2c_devices[0],
 181         .i2c_adapter_id = 0,
 182         .module_name    = "mt9t031",
 183 };
 184
 185 static struct platform_device marxbot_camera[] = {
 186         {
 187                 .name   = "soc-camera-pdrv",
 188                 .id     = 0,
 189                 .dev    = {
 190                         .platform_data = &base_iclink,
 191                 },
 192         },
 193 };
 194
 195 static struct platform_device *marxbot_cameras[] __initdata = {
 196         &marxbot_camera[0],
 197 };
 198
 199 static int __init marxbot_cam_init(void)
 200 {
 201         int ret = gpio_request(CAM_CHOICE, "cam-choice");
 202         if (ret)
 203                 return ret;
 204         gpio_direction_output(CAM_CHOICE, 0);
 205
 206         ret = gpio_request(BASECAM_RST_B, "basecam-reset");
 207         if (ret)
 208                 return ret;
 209         gpio_direction_output(BASECAM_RST_B, 1);
 210         ret = gpio_request(BASECAM_POWER, "basecam-standby");
 211         if (ret)
 212                 return ret;
 213         gpio_direction_output(BASECAM_POWER, 0);
 214
 215         ret = gpio_request(TURRETCAM_RST_B, "turretcam-reset");
 216         if (ret)
 217                 return ret;
 218         gpio_direction_output(TURRETCAM_RST_B, 1);
 219         ret = gpio_request(TURRETCAM_POWER, "turretcam-standby");
 220         if (ret)
 221                 return ret;
 222         gpio_direction_output(TURRETCAM_POWER, 0);
 223
 224         return 0;
 225 }
 226
 227 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 228 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 229 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 230 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 231
 232 static void marxbot_init_sel_gpios(void)
 233 {
 234         if (!gpio_request(SEL0, "sel0")) {
 235                 gpio_direction_input(SEL0);
 236                 gpio_export(SEL0, true);
 237         }
 238
 239         if (!gpio_request(SEL1, "sel1")) {
 240                 gpio_direction_input(SEL1);
 241                 gpio_export(SEL1, true);
 242         }
 243
 244         if (!gpio_request(SEL2, "sel2")) {
 245                 gpio_direction_input(SEL2);
 246                 gpio_export(SEL2, true);
 247         }
 248
 249         if (!gpio_request(SEL3, "sel3")) {
 250                 gpio_direction_input(SEL3);
 251                 gpio_export(SEL3, true);
 252         }
 253 }
 254
 255 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 256                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 257
 258 static int marxbot_usbh1_hw_init(struct platform_device *pdev)
 259 {
 260         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 261
 262         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 263         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 264         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 265         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 266         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 267         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 268         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 269         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 270
 271         return 0;
 272 }
 273
 274 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 275 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 276
 277 static int marxbot_isp1105_init(struct otg_transceiver *otg)
 278 {
 279         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 280         if (ret)
 281                 return ret;
 282         /* single ended */
 283         gpio_direction_output(USBH1_MODE, 0);
 284
 285         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 286         if (ret) {
 287                 gpio_free(USBH1_MODE);
 288                 return ret;
 289         }
 290         gpio_direction_output(USBH1_VBUSEN_B, 1);
 291
 292         return 0;
 293 }
 294
 295
 296 static int marxbot_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
 297 {
 298         if (on)
 299                 gpio_set_value(USBH1_VBUSEN_B, 0);
 300         else
 301                 gpio_set_value(USBH1_VBUSEN_B, 1);
 302
 303         return 0;
 304 }
 305
 306 static struct mxc_usbh_platform_data usbh1_pdata = {
 307         .init   = marxbot_usbh1_hw_init,
 308         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 309         .flags  = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI,
 310 };
 311
 312 static int __init marxbot_usbh1_init(void)
 313 {
 314         struct otg_transceiver *otg;
 315
 316         otg = kzalloc(sizeof(*otg), GFP_KERNEL);
 317         if (!otg)
 318                 return -ENOMEM;
 319
 320         otg->label      = "ISP1105";
 321         otg->init       = marxbot_isp1105_init;
 322         otg->set_vbus   = marxbot_isp1105_set_vbus;
 323
 324         usbh1_pdata.otg = otg;
 325
 326         return mxc_register_device(&mxc_usbh1, &usbh1_pdata);
 327 }
 328
 329 static struct fsl_usb2_platform_data usb_pdata = {
 330         .operating_mode = FSL_USB2_DR_DEVICE,
 331         .phy_mode       = FSL_USB2_PHY_ULPI,
 332 };
 333
 334 /*
 335  * system init for baseboard usage. Will be called by mx31moboard init.
 336  */
 337 void __init mx31moboard_marxbot_init(void)
 338 {
 339         printk(KERN_INFO "Initializing mx31marxbot peripherals\n");
 340
 341         mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins),
 342                 "marxbot");
 343
 344         marxbot_init_sel_gpios();
 345
 346         dspics_resets_init();
 347
 348         mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);
 349
 350         spi_register_board_info(marxbot_spi_board_info,
 351                 ARRAY_SIZE(marxbot_spi_board_info));
 352
 353         marxbot_cam_init();
 354         platform_add_devices(marxbot_cameras, ARRAY_SIZE(marxbot_cameras));
 355
 356         /* battery present pin */
 357         gpio_request(IOMUX_TO_GPIO(MX31_PIN_LCS0), "bat-present");
 358         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_LCS0));
 359         gpio_export(IOMUX_TO_GPIO(MX31_PIN_LCS0), false);
 360
 361         mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
 362
 363         marxbot_usbh1_init();
 364 }