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  * 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/delay.h>
  20 #include <linux/gpio.h>
  21 #include <linux/init.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/i2c.h>
  24 #include <linux/spi/spi.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/types.h>
  27
  28 #include <linux/usb/otg.h>
  29
  30 #include <mach/common.h>
  31 #include <mach/hardware.h>
  32 #include <mach/imx-uart.h>
  33 #include <mach/iomux-mx3.h>
  34 #include <mach/mmc.h>
  35 #include <mach/mxc_ehci.h>
  36 #include <mach/ulpi.h>
  37
  38 #include <media/soc_camera.h>
  39
  40 #include "devices.h"
  41
  42 static unsigned int marxbot_pins[] = {
  43         /* SDHC2 */
  44         MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
  45         MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
  46         MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
  47         MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
  48         /* CSI */
  49         MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
  50         MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
  51         MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
  52         MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
  53         MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
  54         MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
  55         MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
  56         MX31_PIN_CSI_D4__GPIO3_4, MX31_PIN_CSI_D5__GPIO3_5,
  57         MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
  58         MX31_PIN_TXD2__GPIO1_28,
  59         /* dsPIC resets */
  60         MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22,
  61         /*battery detection */
  62         MX31_PIN_LCS0__GPIO3_23,
  63         /* USB H1 */
  64         MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
  65         MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
  66         MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
  67         MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
  68         MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
  69         /* SEL */
  70         MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
  71         MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
  72 };
  73
  74 #define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
  75 #define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
  76
  77 static int marxbot_sdhc2_get_ro(struct device *dev)
  78 {
  79         return !gpio_get_value(SDHC2_WP);
  80 }
  81
  82 static int marxbot_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
  83                 void *data)
  84 {
  85         int ret;
  86
  87         ret = gpio_request(SDHC2_CD, "sdhc-detect");
  88         if (ret)
  89                 return ret;
  90
  91         gpio_direction_input(SDHC2_CD);
  92
  93         ret = gpio_request(SDHC2_WP, "sdhc-wp");
  94         if (ret)
  95                 goto err_gpio_free;
  96         gpio_direction_input(SDHC2_WP);
  97
  98         ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
  99                 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 100                 "sdhc2-card-detect", data);
 101         if (ret)
 102                 goto err_gpio_free_2;
 103
 104         return 0;
 105
 106 err_gpio_free_2:
 107         gpio_free(SDHC2_WP);
 108 err_gpio_free:
 109         gpio_free(SDHC2_CD);
 110
 111         return ret;
 112 }
 113
 114 static void marxbot_sdhc2_exit(struct device *dev, void *data)
 115 {
 116         free_irq(gpio_to_irq(SDHC2_CD), data);
 117         gpio_free(SDHC2_WP);
 118         gpio_free(SDHC2_CD);
 119 }
 120
 121 static struct imxmmc_platform_data sdhc2_pdata = {
 122         .get_ro = marxbot_sdhc2_get_ro,
 123         .init   = marxbot_sdhc2_init,
 124         .exit   = marxbot_sdhc2_exit,
 125 };
 126
 127 #define TRSLAT_RST_B    IOMUX_TO_GPIO(MX31_PIN_STXD5)
 128 #define DSPICS_RST_B    IOMUX_TO_GPIO(MX31_PIN_SRXD5)
 129
 130 static void dspics_resets_init(void)
 131 {
 132         if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
 133                 gpio_direction_output(TRSLAT_RST_B, 0);
 134                 gpio_export(TRSLAT_RST_B, false);
 135         }
 136
 137         if (!gpio_request(DSPICS_RST_B, "dspics-rst")) {
 138                 gpio_direction_output(DSPICS_RST_B, 0);
 139                 gpio_export(DSPICS_RST_B, false);
 140         }
 141 }
 142
 143 static struct spi_board_info marxbot_spi_board_info[] __initdata = {
 144         {
 145                 .modalias = "spidev",
 146                 .max_speed_hz = 300000,
 147                 .bus_num = 1,
 148                 .chip_select = 1, /* according spi1_cs[] ! */
 149         },
 150 };
 151
 152 #define TURRETCAM_POWER IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
 153 #define BASECAM_POWER   IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
 154 #define TURRETCAM_RST_B IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
 155 #define BASECAM_RST_B   IOMUX_TO_GPIO(MX31_PIN_CSI_D4)
 156 #define CAM_CHOICE      IOMUX_TO_GPIO(MX31_PIN_TXD2)
 157
 158 static int marxbot_basecam_power(struct device *dev, int on)
 159 {
 160         gpio_set_value(BASECAM_POWER, !on);
 161         return 0;
 162 }
 163
 164 static int marxbot_basecam_reset(struct device *dev)
 165 {
 166         gpio_set_value(BASECAM_RST_B, 0);
 167         udelay(100);
 168         gpio_set_value(BASECAM_RST_B, 1);
 169         return 0;
 170 }
 171
 172 static struct i2c_board_info marxbot_i2c_devices[] = {
 173         {
 174                 I2C_BOARD_INFO("mt9t031", 0x5d),
 175         },
 176 };
 177
 178 static struct soc_camera_link base_iclink = {
 179         .bus_id         = 0,            /* Must match with the camera ID */
 180         .power          = marxbot_basecam_power,
 181         .reset          = marxbot_basecam_reset,
 182         .board_info     = &marxbot_i2c_devices[0],
 183         .i2c_adapter_id = 0,
 184         .module_name    = "mt9t031",
 185 };
 186
 187 static struct platform_device marxbot_camera[] = {
 188         {
 189                 .name   = "soc-camera-pdrv",
 190                 .id     = 0,
 191                 .dev    = {
 192                         .platform_data = &base_iclink,
 193                 },
 194         },
 195 };
 196
 197 static struct platform_device *marxbot_cameras[] __initdata = {
 198         &marxbot_camera[0],
 199 };
 200
 201 static int __init marxbot_cam_init(void)
 202 {
 203         int ret = gpio_request(CAM_CHOICE, "cam-choice");
 204         if (ret)
 205                 return ret;
 206         gpio_direction_output(CAM_CHOICE, 0);
 207
 208         ret = gpio_request(BASECAM_RST_B, "basecam-reset");
 209         if (ret)
 210                 return ret;
 211         gpio_direction_output(BASECAM_RST_B, 1);
 212         ret = gpio_request(BASECAM_POWER, "basecam-standby");
 213         if (ret)
 214                 return ret;
 215         gpio_direction_output(BASECAM_POWER, 0);
 216
 217         ret = gpio_request(TURRETCAM_RST_B, "turretcam-reset");
 218         if (ret)
 219                 return ret;
 220         gpio_direction_output(TURRETCAM_RST_B, 1);
 221         ret = gpio_request(TURRETCAM_POWER, "turretcam-standby");
 222         if (ret)
 223                 return ret;
 224         gpio_direction_output(TURRETCAM_POWER, 0);
 225
 226         return 0;
 227 }
 228
 229 #define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
 230 #define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
 231 #define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
 232 #define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
 233
 234 static void marxbot_init_sel_gpios(void)
 235 {
 236         if (!gpio_request(SEL0, "sel0")) {
 237                 gpio_direction_input(SEL0);
 238                 gpio_export(SEL0, true);
 239         }
 240
 241         if (!gpio_request(SEL1, "sel1")) {
 242                 gpio_direction_input(SEL1);
 243                 gpio_export(SEL1, true);
 244         }
 245
 246         if (!gpio_request(SEL2, "sel2")) {
 247                 gpio_direction_input(SEL2);
 248                 gpio_export(SEL2, true);
 249         }
 250
 251         if (!gpio_request(SEL3, "sel3")) {
 252                 gpio_direction_input(SEL3);
 253                 gpio_export(SEL3, true);
 254         }
 255 }
 256
 257 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 258                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 259
 260 static int marxbot_usbh1_hw_init(struct platform_device *pdev)
 261 {
 262         mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
 263
 264         mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
 265         mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
 266         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
 267         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
 268         mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
 269         mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
 270         mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
 271         mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
 272
 273         return 0;
 274 }
 275
 276 #define USBH1_VBUSEN_B  IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
 277 #define USBH1_MODE      IOMUX_TO_GPIO(MX31_PIN_NFALE)
 278
 279 static int marxbot_isp1105_init(struct otg_transceiver *otg)
 280 {
 281         int ret = gpio_request(USBH1_MODE, "usbh1-mode");
 282         if (ret)
 283                 return ret;
 284         /* single ended */
 285         gpio_direction_output(USBH1_MODE, 0);
 286
 287         ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
 288         if (ret) {
 289                 gpio_free(USBH1_MODE);
 290                 return ret;
 291         }
 292         gpio_direction_output(USBH1_VBUSEN_B, 1);
 293
 294         return 0;
 295 }
 296
 297
 298 static int marxbot_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
 299 {
 300         if (on)
 301                 gpio_set_value(USBH1_VBUSEN_B, 0);
 302         else
 303                 gpio_set_value(USBH1_VBUSEN_B, 1);
 304
 305         return 0;
 306 }
 307
 308 static struct mxc_usbh_platform_data usbh1_pdata = {
 309         .init   = marxbot_usbh1_hw_init,
 310         .portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
 311         .flags  = MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_INTERFACE_SINGLE_UNI,
 312 };
 313
 314 static int __init marxbot_usbh1_init(void)
 315 {
 316         struct otg_transceiver *otg;
 317
 318         otg = kzalloc(sizeof(*otg), GFP_KERNEL);
 319         if (!otg)
 320                 return -ENOMEM;
 321
 322         otg->label      = "ISP1105";
 323         otg->init       = marxbot_isp1105_init;
 324         otg->set_vbus   = marxbot_isp1105_set_vbus;
 325
 326         usbh1_pdata.otg = otg;
 327
 328         return mxc_register_device(&mxc_usbh1, &usbh1_pdata);
 329 }
 330
 331 /*
 332  * system init for baseboard usage. Will be called by mx31moboard init.
 333  */
 334 void __init mx31moboard_marxbot_init(void)
 335 {
 336         printk(KERN_INFO "Initializing mx31marxbot peripherals\n");
 337
 338         mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins),
 339                 "marxbot");
 340
 341         marxbot_init_sel_gpios();
 342
 343         dspics_resets_init();
 344
 345         mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);
 346
 347         spi_register_board_info(marxbot_spi_board_info,
 348                 ARRAY_SIZE(marxbot_spi_board_info));
 349
 350         marxbot_cam_init();
 351         platform_add_devices(marxbot_cameras, ARRAY_SIZE(marxbot_cameras));
 352
 353         /* battery present pin */
 354         gpio_request(IOMUX_TO_GPIO(MX31_PIN_LCS0), "bat-present");
 355         gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_LCS0));
 356         gpio_export(IOMUX_TO_GPIO(MX31_PIN_LCS0), false);
 357
 358         marxbot_usbh1_init();
 359 }