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i.MX27 pca100: Add USB support

Browse source 
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2010-02-03 17:13:29 +01:00
parent d186f04c17
commit eee7c497d2
2 changed files with 104 additions and 0 deletions
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1
arch/arm/mach-mx2/Kconfig
View file

@ -100,6 +100,7 @@ config MACH_IMX27LITE
config MACH_PCA100
bool "Phytec phyCARD-s (pca100)"
depends on MACH_MX27
select MXC_ULPI if USB_ULPI
help
Include support for phyCARD-s (aka pca100) platform. This
includes specific configurations for the module and its peripherals.

103
arch/arm/mach-mx2/mach-pca100.c
View file

@ -26,6 +26,9 @@
#include <linux/spi/eeprom.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/fsl_devices.h>
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
@ -41,9 +44,14 @@
#include <mach/mxc_nand.h>
#include <mach/irqs.h>
#include <mach/mmc.h>
#include <mach/mxc_ehci.h>
#include <mach/ulpi.h>
#include "devices.h"
#define OTG_PHY_CS_GPIO (GPIO_PORTB + 23)
#define USBH2_PHY_CS_GPIO (GPIO_PORTB + 24)
static int pca100_pins[] = {
/* UART1 */
PE12_PF_UART1_TXD,
@ -92,6 +100,34 @@ static int pca100_pins[] = {
PD29_PF_CSPI1_SCLK,
PD30_PF_CSPI1_MISO,
PD31_PF_CSPI1_MOSI,
/* OTG */
OTG_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
PC7_PF_USBOTG_DATA5,
PC8_PF_USBOTG_DATA6,
PC9_PF_USBOTG_DATA0,
PC10_PF_USBOTG_DATA2,
PC11_PF_USBOTG_DATA1,
PC12_PF_USBOTG_DATA4,
PC13_PF_USBOTG_DATA3,
PE0_PF_USBOTG_NXT,
PE1_PF_USBOTG_STP,
PE2_PF_USBOTG_DIR,
PE24_PF_USBOTG_CLK,
PE25_PF_USBOTG_DATA7,
/* USBH2 */
USBH2_PHY_CS_GPIO | GPIO_GPIO | GPIO_OUT,
PA0_PF_USBH2_CLK,
PA1_PF_USBH2_DIR,
PA2_PF_USBH2_DATA7,
PA3_PF_USBH2_NXT,
PA4_PF_USBH2_STP,
PD19_AF_USBH2_DATA4,
PD20_AF_USBH2_DATA3,
PD21_AF_USBH2_DATA6,
PD22_AF_USBH2_DATA0,
PD23_AF_USBH2_DATA2,
PD24_AF_USBH2_DATA1,
PD26_AF_USBH2_DATA5,
};
static struct imxuart_platform_data uart_pdata = {
@ -182,6 +218,50 @@ static struct imxmmc_platform_data sdhc_pdata = {
.exit = pca100_sdhc2_exit,
};
static int otg_phy_init(struct platform_device *pdev)
{
gpio_set_value(OTG_PHY_CS_GPIO, 0);
return 0;
}
static struct mxc_usbh_platform_data otg_pdata = {
.init = otg_phy_init,
.portsc = MXC_EHCI_MODE_ULPI,
.flags = MXC_EHCI_INTERFACE_DIFF_UNI,
};
static int usbh2_phy_init(struct platform_device *pdev)
{
gpio_set_value(USBH2_PHY_CS_GPIO, 0);
return 0;
}
static struct mxc_usbh_platform_data usbh2_pdata = {
.init = usbh2_phy_init,
.portsc = MXC_EHCI_MODE_ULPI,
.flags = MXC_EHCI_INTERFACE_DIFF_UNI,
};
static struct fsl_usb2_platform_data otg_device_pdata = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_ULPI,
};
static int otg_mode_host;
static int __init pca100_otg_mode(char *options)
{
if (!strcmp(options, "host"))
otg_mode_host = 1;
else if (!strcmp(options, "device"))
otg_mode_host = 0;
else
pr_info("otg_mode neither \"host\" nor \"device\". "
"Defaulting to device\n");
return 0;
}
__setup("otg_mode=", pca100_otg_mode);
static void __init pca100_init(void)
{
int ret;
@ -220,6 +300,29 @@ static void __init pca100_init(void)
mxc_register_device(&mxc_spi_device0, &pca100_spi_0_data);
#endif
gpio_request(OTG_PHY_CS_GPIO, "usb-otg-cs");
gpio_direction_output(OTG_PHY_CS_GPIO, 1);
gpio_request(USBH2_PHY_CS_GPIO, "usb-host2-cs");
gpio_direction_output(USBH2_PHY_CS_GPIO, 1);
#if defined(CONFIG_USB_ULPI)
if (otg_mode_host) {
otg_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
mxc_register_device(&mxc_otg_host, &otg_pdata);
}
usbh2_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
mxc_register_device(&mxc_usbh2, &usbh2_pdata);
#endif
if (!otg_mode_host) {
gpio_set_value(OTG_PHY_CS_GPIO, 0);
mxc_register_device(&mxc_otg_udc_device, &otg_device_pdata);
}
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
}