i.MX27 pca100: Add USB support

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

diff --git a/arch/arm/mach-mx2/Kconfig b/arch/arm/mach-mx2/Kconfig
index 7bc797c..ca1278d 100644 (file)
--- 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 9279b42..cda52a6 100644 (file)
--- 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));
 }