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authorSascha Hauer <s.hauer@pengutronix.de>2010-02-03 19:13:29 +0300
committerSascha Hauer <s.hauer@pengutronix.de>2010-02-04 19:29:34 +0300
commiteee7c497d250bbb2bfd0fdc2b41b9b6ff02148a2 (patch)
tree471d4938d12e85cb88c68f2a54e2dbb5f18b402a
parentd186f04c17d86e587e72bc402302df56a9b820f3 (diff)
downloadlinux-eee7c497d250bbb2bfd0fdc2b41b9b6ff02148a2.tar.xz
i.MX27 pca100: Add USB support
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r--arch/arm/mach-mx2/Kconfig1
-rw-r--r--arch/arm/mach-mx2/mach-pca100.c103
2 files changed, 104 insertions, 0 deletions
diff --git a/arch/arm/mach-mx2/Kconfig b/arch/arm/mach-mx2/Kconfig
index 7bc797c1c3a2..ca1278d5c845 100644
--- a/arch/arm/mach-mx2/Kconfig
+++ b/arch/arm/mach-mx2/Kconfig
@@ -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.
diff --git a/arch/arm/mach-mx2/mach-pca100.c b/arch/arm/mach-mx2/mach-pca100.c
index 9279b42b24b5..cda52a6a3290 100644
--- a/arch/arm/mach-mx2/mach-pca100.c
+++ b/arch/arm/mach-mx2/mach-pca100.c
@@ -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));
}