563abb4be1
Small confusion with our hardware engineer, the WP signal (RO) is active low on our boards, the signal has to inverted. This is a pretty straightforward patch, it could even go to -rc, but if not, then push it for 2.6.32. Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
160 lines
4.8 KiB
C
160 lines
4.8 KiB
C
/*
|
|
* 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/fsl_devices.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.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 "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_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,
|
|
MX31_PIN_TXD2__GPIO1_28,
|
|
/* USB OTG */
|
|
MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
|
|
MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
|
|
MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
|
|
MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
|
|
MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
|
|
MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
|
|
MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
|
|
MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
|
|
MX31_PIN_USBOTG_CLK__USBOTG_CLK, MX31_PIN_USBOTG_DIR__USBOTG_DIR,
|
|
MX31_PIN_USBOTG_NXT__USBOTG_NXT, MX31_PIN_USBOTG_STP__USBOTG_STP,
|
|
MX31_PIN_USB_OC__GPIO1_30,
|
|
};
|
|
|
|
#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,
|
|
};
|
|
|
|
static struct fsl_usb2_platform_data usb_pdata = {
|
|
.operating_mode = FSL_USB2_DR_DEVICE,
|
|
.phy_mode = FSL_USB2_PHY_ULPI,
|
|
};
|
|
|
|
#define OTG_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST)
|
|
#define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
|
|
|
|
static void marxbot_usbotg_init(void)
|
|
{
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, OTG_PAD_CFG);
|
|
mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, OTG_PAD_CFG);
|
|
|
|
gpio_request(OTG_EN_B, "usb-udc-en");
|
|
gpio_direction_output(OTG_EN_B, 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");
|
|
|
|
mxc_register_device(&mxcsdhc_device1, &sdhc2_pdata);
|
|
|
|
marxbot_usbotg_init();
|
|
mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
|
|
}
|