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/*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
#include <linux/platform_device.h>
#include <linux/types.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx3.h>
#include <mach/mmc.h>
#include <media/soc_camera.h>
#include "devices.h"
static unsigned int marxbot_pins[] = {
/* SDHC2 */
MX31_PIN_PC_PWRON__SD2_DATA3, MX31_PIN_PC_VS1__SD2_DATA2,
MX31_PIN_PC_READY__SD2_DATA1, MX31_PIN_PC_WAIT_B__SD2_DATA0,
MX31_PIN_PC_CD2_B__SD2_CLK, MX31_PIN_PC_CD1_B__SD2_CMD,
MX31_PIN_ATA_DIOR__GPIO3_28, MX31_PIN_ATA_DIOW__GPIO3_29,
/* CSI */
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_CSI_D4__GPIO3_4, MX31_PIN_CSI_D5__GPIO3_5,
MX31_PIN_GPIO3_0__GPIO3_0, MX31_PIN_GPIO3_1__GPIO3_1,
MX31_PIN_TXD2__GPIO1_28,
/* dsPIC resets */
MX31_PIN_STXD5__GPIO1_21, MX31_PIN_SRXD5__GPIO1_22,
/*battery detection */
MX31_PIN_LCS0__GPIO3_23,
};
#define SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
#define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
static int marxbot_sdhc2_get_ro(struct device *dev)
{
return !gpio_get_value(SDHC2_WP);
}
static int marxbot_sdhc2_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
int ret;
ret = gpio_request(SDHC2_CD, "sdhc-detect");
if (ret)
return ret;
gpio_direction_input(SDHC2_CD);
ret = gpio_request(SDHC2_WP, "sdhc-wp");
if (ret)
goto err_gpio_free;
gpio_direction_input(SDHC2_WP);
ret = request_irq(gpio_to_irq(SDHC2_CD), detect_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"sdhc2-card-detect", data);
if (ret)
goto err_gpio_free_2;
return 0;
err_gpio_free_2:
gpio_free(SDHC2_WP);
err_gpio_free:
gpio_free(SDHC2_CD);
return ret;
}
static void marxbot_sdhc2_exit(struct device *dev, void *data)
{
free_irq(gpio_to_irq(SDHC2_CD), data);
gpio_free(SDHC2_WP);
gpio_free(SDHC2_CD);
}
static struct imxmmc_platform_data sdhc2_pdata = {
.get_ro = marxbot_sdhc2_get_ro,
.init = marxbot_sdhc2_init,
.exit = marxbot_sdhc2_exit,
};
#define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_STXD5)
#define DSPICS_RST_B IOMUX_TO_GPIO(MX31_PIN_SRXD5)
static void dspics_resets_init(void)
{
if (!gpio_request(TRSLAT_RST_B, "translator-rst")) {
gpio_direction_output(TRSLAT_RST_B, 1);
gpio_export(TRSLAT_RST_B, false);
}
if (!gpio_request(DSPICS_RST_B, "dspics-rst")) {
gpio_direction_output(DSPICS_RST_B, 1);
gpio_export(DSPICS_RST_B, false);
}
}
static struct spi_board_info marxbot_spi_board_info[] __initdata = {
{
.modalias = "spidev",
.max_speed_hz = 300000,
.bus_num = 1,
.chip_select = 1, /* according spi1_cs[] ! */
},
};
#define TURRETCAM_POWER IOMUX_TO_GPIO(MX31_PIN_GPIO3_1)
#define BASECAM_POWER IOMUX_TO_GPIO(MX31_PIN_CSI_D5)
#define TURRETCAM_RST_B IOMUX_TO_GPIO(MX31_PIN_GPIO3_0)
#define BASECAM_RST_B IOMUX_TO_GPIO(MX31_PIN_CSI_D4)
#define CAM_CHOICE IOMUX_TO_GPIO(MX31_PIN_TXD2)
static int marxbot_basecam_power(struct device *dev, int on)
{
gpio_set_value(BASECAM_POWER, !on);
return 0;
}
static int marxbot_basecam_reset(struct device *dev)
{
gpio_set_value(BASECAM_RST_B, 0);
udelay(100);
gpio_set_value(BASECAM_RST_B, 1);
return 0;
}
static struct i2c_board_info marxbot_i2c_devices[] = {
{
I2C_BOARD_INFO("mt9t031", 0x5d),
},
};
static struct soc_camera_link base_iclink = {
.bus_id = 0, /* Must match with the camera ID */
.power = marxbot_basecam_power,
.reset = marxbot_basecam_reset,
.board_info = &marxbot_i2c_devices[0],
.i2c_adapter_id = 0,
.module_name = "mt9t031",
};
static struct platform_device marxbot_camera[] = {
{
.name = "soc-camera-pdrv",
.id = 0,
.dev = {
.platform_data = &base_iclink,
},
},
};
static struct platform_device *marxbot_cameras[] __initdata = {
&marxbot_camera[0],
};
static int __init marxbot_cam_init(void)
{
int ret = gpio_request(CAM_CHOICE, "cam-choice");
if (ret)
return ret;
gpio_direction_output(CAM_CHOICE, 1);
ret = gpio_request(BASECAM_RST_B, "basecam-reset");
if (ret)
return ret;
gpio_direction_output(BASECAM_RST_B, 1);
ret = gpio_request(BASECAM_POWER, "basecam-standby");
if (ret)
return ret;
gpio_direction_output(BASECAM_POWER, 0);
ret = gpio_request(TURRETCAM_RST_B, "turretcam-reset");
if (ret)
return ret;
gpio_direction_output(TURRETCAM_RST_B, 1);
ret = gpio_request(TURRETCAM_POWER, "turretcam-standby");
if (ret)
return ret;
gpio_direction_output(TURRETCAM_POWER, 0);
return 0;
}
/*
* system init for baseboard usage. Will be called by mx31moboard init.
*/
void __init mx31moboard_marxbot_init(void)
{
printk(KERN_INFO "Initializing mx31marxbot peripherals\n");
mxc_iomux_setup_multiple_pins(marxbot_pins, ARRAY_SIZE(marxbot_pins),
"marxbot");
dspics_resets_init();
mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);
spi_register_board_info(marxbot_spi_board_info,
ARRAY_SIZE(marxbot_spi_board_info));
marxbot_cam_init();
platform_add_devices(marxbot_cameras, ARRAY_SIZE(marxbot_cameras));
/* battery present pin */
gpio_request(IOMUX_TO_GPIO(MX31_PIN_LCS0), "bat-present");
gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_LCS0));
gpio_export(IOMUX_TO_GPIO(MX31_PIN_LCS0), false);
}
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