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linux/arch/arm/mach-mx3/mx31moboard-devboard.c
Sascha Hauer 4bd597b633 ARM i.MX ehci: do ehci init in board specific functions 
The mxc-ehci driver calls SoC specific phy initialization right after
calling board specific initialization. To offer greater flexibility for
boards to setup the phy and to get rid of some unnecessary flags in
platform data this patch lets the boards call the SoC specific phy
initialization and remove it from the driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-02-11 08:40:45 +01:00

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6.1 KiB
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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.
*/
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/usb/otg.h>
#include <mach/common.h>
#include <mach/iomux-mx3.h>
#include <mach/hardware.h>
#include <mach/ulpi.h>
#include "devices-imx31.h"
#include "devices.h"
static unsigned int devboard_pins[] = {
/* UART1 */
MX31_PIN_CTS2__CTS2, MX31_PIN_RTS2__RTS2,
MX31_PIN_TXD2__TXD2, MX31_PIN_RXD2__RXD2,
/* 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,
/* USB H1 */
MX31_PIN_CSPI1_MISO__USBH1_RXDP, MX31_PIN_CSPI1_MOSI__USBH1_RXDM,
MX31_PIN_CSPI1_SS0__USBH1_TXDM, MX31_PIN_CSPI1_SS1__USBH1_TXDP,
MX31_PIN_CSPI1_SS2__USBH1_RCV, MX31_PIN_CSPI1_SCLK__USBH1_OEB,
MX31_PIN_CSPI1_SPI_RDY__USBH1_FS, MX31_PIN_SFS6__USBH1_SUSPEND,
MX31_PIN_NFRE_B__GPIO1_11, MX31_PIN_NFALE__GPIO1_12,
/* SEL */
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 SDHC2_CD IOMUX_TO_GPIO(MX31_PIN_ATA_DIOR)
#define SDHC2_WP IOMUX_TO_GPIO(MX31_PIN_ATA_DIOW)
static int devboard_sdhc2_get_ro(struct device *dev)
{
return !gpio_get_value(SDHC2_WP);
}
static int devboard_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 devboard_sdhc2_exit(struct device *dev, void *data)
{
free_irq(gpio_to_irq(SDHC2_CD), data);
gpio_free(SDHC2_WP);
gpio_free(SDHC2_CD);
}
static const struct imxmmc_platform_data sdhc2_pdata __initconst = {
.get_ro = devboard_sdhc2_get_ro,
.init = devboard_sdhc2_init,
.exit = devboard_sdhc2_exit,
};
#define SEL0 IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
#define SEL1 IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
#define SEL2 IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
#define SEL3 IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)
static void devboard_init_sel_gpios(void)
{
if (!gpio_request(SEL0, "sel0")) {
gpio_direction_input(SEL0);
gpio_export(SEL0, true);
}
if (!gpio_request(SEL1, "sel1")) {
gpio_direction_input(SEL1);
gpio_export(SEL1, true);
}
if (!gpio_request(SEL2, "sel2")) {
gpio_direction_input(SEL2);
gpio_export(SEL2, true);
}
if (!gpio_request(SEL3, "sel3")) {
gpio_direction_input(SEL3);
gpio_export(SEL3, true);
}
}
#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
static int devboard_usbh1_hw_init(struct platform_device *pdev)
{
mxc_iomux_set_gpr(MUX_PGP_USB_SUSPEND, true);
mxc_iomux_set_pad(MX31_PIN_CSPI1_MISO, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_CSPI1_MOSI, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_CSPI1_SS0, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_CSPI1_SS1, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_CSPI1_SS2, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_CSPI1_SCLK, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_CSPI1_SPI_RDY, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SFS6, USB_PAD_CFG);
mdelay(10);
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
MXC_EHCI_INTERFACE_SINGLE_UNI);
}
#define USBH1_VBUSEN_B IOMUX_TO_GPIO(MX31_PIN_NFRE_B)
#define USBH1_MODE IOMUX_TO_GPIO(MX31_PIN_NFALE)
static int devboard_isp1105_init(struct otg_transceiver *otg)
{
int ret = gpio_request(USBH1_MODE, "usbh1-mode");
if (ret)
return ret;
/* single ended */
gpio_direction_output(USBH1_MODE, 0);
ret = gpio_request(USBH1_VBUSEN_B, "usbh1-vbusen");
if (ret) {
gpio_free(USBH1_MODE);
return ret;
}
gpio_direction_output(USBH1_VBUSEN_B, 1);
return 0;
}
static int devboard_isp1105_set_vbus(struct otg_transceiver *otg, bool on)
{
if (on)
gpio_set_value(USBH1_VBUSEN_B, 0);
else
gpio_set_value(USBH1_VBUSEN_B, 1);
return 0;
}
static struct mxc_usbh_platform_data usbh1_pdata __initdata = {
.init = devboard_usbh1_hw_init,
.portsc = MXC_EHCI_MODE_UTMI | MXC_EHCI_SERIAL,
};
static int __init devboard_usbh1_init(void)
{
struct otg_transceiver *otg;
struct platform_device *pdev;
otg = kzalloc(sizeof(*otg), GFP_KERNEL);
if (!otg)
return -ENOMEM;
otg->label = "ISP1105";
otg->init = devboard_isp1105_init;
otg->set_vbus = devboard_isp1105_set_vbus;
usbh1_pdata.otg = otg;
pdev = imx31_add_mxc_ehci_hs(1, &usbh1_pdata);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
return 0;
}
static const struct fsl_usb2_platform_data usb_pdata __initconst = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
/*
* system init for baseboard usage. Will be called by mx31moboard init.
*/
void __init mx31moboard_devboard_init(void)
{
printk(KERN_INFO "Initializing mx31devboard peripherals\n");
mxc_iomux_setup_multiple_pins(devboard_pins, ARRAY_SIZE(devboard_pins),
"devboard");
imx31_add_imx_uart1(&uart_pdata);
imx31_add_mxc_mmc(1, &sdhc2_pdata);
devboard_init_sel_gpios();
imx31_add_fsl_usb2_udc(&usb_pdata);
devboard_usbh1_init();
}
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