/*
* Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <media/soc_camera.h>
#include "board-mx31moboard.h"
#include "common.h"
#include "devices-imx31.h"
#include "ehci.h"
#include "hardware.h"
#include "iomux-mx3.h"
#include "ulpi.h"
static unsigned int smartbot_pins[] = {
/* UART1 */
MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
/* CSI */
MX31_PIN_CSI_D4__CSI_D4, MX31_PIN_CSI_D5__CSI_D5,
MX31_PIN_CSI_D6__CSI_D6, MX31_PIN_CSI_D7__CSI_D7,
MX31_PIN_CSI_D8__CSI_D8, MX31_PIN_CSI_D9__CSI_D9,
MX31_PIN_CSI_D10__CSI_D10, MX31_PIN_CSI_D11__CSI_D11,
MX31_PIN_CSI_D12__CSI_D12, MX31_PIN_CSI_D13__CSI_D13,
MX31_PIN_CSI_D14__CSI_D14, MX31_PIN_CSI_D15__CSI_D15,
MX31_PIN_CSI_HSYNC__CSI_HSYNC, MX31_PIN_CSI_MCLK__CSI_MCLK,
MX31_PIN_CSI_PIXCLK__CSI_PIXCLK, MX31_PIN_CSI_VSYNC__CSI_VSYNC,
MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
/* ENABLES */
MX31_PIN_DTR_DCE1__GPIO2_8, MX31_PIN_DSR_DCE1__GPIO2_9,
MX31_PIN_RI_DCE1__GPIO2_10, MX31_PIN_DCD_DCE1__GPIO2_11,
};
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
#define CAM_POWER IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
#define CAM_RST_B IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
static int smartbot_cam_power(struct device *dev, int on)
{
gpio_set_value(CAM_POWER, !on);
return 0;
}
static int smartbot_cam_reset(struct device *dev)
{
gpio_set_value(CAM_RST_B, 0);
udelay(100);
gpio_set_value(CAM_RST_B, 1);
return 0;
}
static struct i2c_board_info smartbot_i2c_devices[] = {
{
I2C_BOARD_INFO("mt9t031", 0x5d),
},
};
static struct soc_camera_link base_iclink = {
.bus_id = 0, /* Must match with the camera ID */
.power = smartbot_cam_power,
.reset = smartbot_cam_reset,
.board_info = &smartbot_i2c_devices[0],
.i2c_adapter_id = 0,
};
static struct platform_device smartbot_camera[] = {
{
.name = "soc-camera-pdrv",
.id = 0,
.dev = {
.platform_data = &base_iclink,
},
},
};
static struct platform_device *smartbot_cameras[] __initdata = {
&smartbot_camera[0],
};
static int __init smartbot_cam_init(void)
{
int ret = gpio_request(CAM_RST_B, "cam-reset");
if (ret)
return ret;
gpio_direction_output(CAM_RST_B, 1);
ret = gpio_request(CAM_POWER, "cam-standby");
if (ret)
return ret;
gpio_direction_output(CAM_POWER, 0);
return 0;
}
static const struct fsl_usb2_platform_data usb_pdata __initconst = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
#if defined(CONFIG_USB_ULPI)
static int smartbot_otg_init(struct platform_device *pdev)
{
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
}
static struct mxc_usbh_platform_data otg_host_pdata __initdata = {
.init = smartbot_otg_init,
.portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};
static int __init smartbot_otg_host_init(void)
{
struct platform_device *pdev;
otg_host_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (!otg_host_pdata.otg)
return -ENODEV;
pdev = imx31_add_mxc_ehci_otg(&otg_host_pdata);
return PTR_ERR_OR_ZERO(pdev);
}
#else
static inline int smartbot_otg_host_init(void) { return 0; }
#endif
#define POWER_EN IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
#define DSPIC_RST_B IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
#define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
#define TRSLAT_SRC_CHOICE IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
static void smartbot_resets_init(void)
{
if (!gpio_request(POWER_EN, "power-enable")) {
gpio_direction_output(POWER_EN, 0);
gpio_export(POWER_EN, false);
}
if (!gpio_request(DSPIC_RST_B, "dspic-rst")) {
gpio_direction_output(DSPIC_RST_B, 0);
gpio_export(DSPIC_RST_B, false);
}
if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
gpio_direction_output(TRSLAT_RST_B, 0);
gpio_export(TRSLAT_RST_B, false);
}
if (!gpio_request(TRSLAT_SRC_CHOICE, "translator-src-choice")) {
gpio_direction_output(TRSLAT_SRC_CHOICE, 0);
gpio_export(TRSLAT_SRC_CHOICE, false);
}
}
/*
* system init for baseboard usage. Will be called by mx31moboard init.
*/
void __init mx31moboard_smartbot_init(int board)
{
printk(KERN_INFO "Initializing mx31smartbot peripherals\n");
mxc_iomux_setup_multiple_pins(smartbot_pins, ARRAY_SIZE(smartbot_pins),
"smartbot");
imx31_add_imx_uart1(&uart_pdata);
switch (board) {
case MX31SMARTBOT:
imx31_add_fsl_usb2_udc(&usb_pdata);
break;
case MX31EYEBOT:
smartbot_otg_host_init();
break;
default:
printk(KERN_WARNING "Unknown board %d, USB OTG not initialized",
board);
}
smartbot_resets_init();
smartbot_cam_init();
platform_add_devices(smartbot_cameras, ARRAY_SIZE(smartbot_cameras));
}
