i.MX31 pcm037: Add USB support

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

1 files changed, 92 insertions, 45 deletions

diff --git a/arch/arm/mach-mx3/mach-pcm037.c b/arch/arm/mach-mx3/mach-pcm037.c
index 21f54811a630..11f531559169 100644
--- a/arch/arm/mach-mx3/mach-pcm037.c
+++ b/arch/arm/mach-mx3/mach-pcm037.c
@@ -33,6 +33,9 @@
 #include <linux/irq.h>
 #include <linux/fsl_devices.h>
 #include <linux/can/platform/sja1000.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+#include <linux/fsl_devices.h>
 
 #include <media/soc_camera.h>
 
@@ -51,6 +54,8 @@
 #include <mach/mx3_camera.h>
 #include <mach/mx3fb.h>
 #include <mach/mxc_nand.h>
+#include <mach/mxc_ehci.h>
+#include <mach/ulpi.h>
 
 #include "devices.h"
 #include "pcm037.h"
@@ -172,19 +177,7 @@ static unsigned int pcm037_pins[] = {
         MX31_PIN_CSI_VSYNC__CSI_VSYNC,
         /* GPIO */
         IOMUX_MODE(MX31_PIN_ATA_DMACK, IOMUX_CONFIG_GPIO),
-};
-
-static struct physmap_flash_data pcm037_flash_data = {
-        .width  = 2,
-};
-
-static struct resource pcm037_flash_resource = {
-        .start  = 0xa0000000,
-        .end    = 0xa1ffffff,
-        .flags  = IORESOURCE_MEM,
-};
-
-static int usbotg_pins[] = {
+        /* OTG */
         MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
         MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
         MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
@@ -197,39 +190,29 @@ static int usbotg_pins[] = {
         MX31_PIN_USBOTG_DIR__USBOTG_DIR,
         MX31_PIN_USBOTG_NXT__USBOTG_NXT,
         MX31_PIN_USBOTG_STP__USBOTG_STP,
+        /* USB host 2 */
+        IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_STXD3, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_SRXD3, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_SCK3, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_SFS3, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_STXD6, IOMUX_CONFIG_FUNC),
+        IOMUX_MODE(MX31_PIN_SRXD6, IOMUX_CONFIG_FUNC),
 };
 
-/* USB OTG HS port */
-static int __init gpio_usbotg_hs_activate(void)
-{
-        int ret = mxc_iomux_setup_multiple_pins(usbotg_pins,
-                                        ARRAY_SIZE(usbotg_pins), "usbotg");
-
-        if (ret < 0) {
-                printk(KERN_ERR "Cannot set up OTG pins\n");
-                return ret;
-        }
-
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK,   PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR,   PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT,   PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-        mxc_iomux_set_pad(MX31_PIN_USBOTG_STP,   PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST);
-
-        return 0;
-}
+static struct physmap_flash_data pcm037_flash_data = {
+        .width  = 2,
+};
 
-/* OTG config */
-static struct fsl_usb2_platform_data usb_pdata = {
-        .operating_mode = FSL_USB2_DR_DEVICE,
-        .phy_mode       = FSL_USB2_PHY_ULPI,
+static struct resource pcm037_flash_resource = {
+        .start  = 0xa0000000,
+        .end    = 0xa1ffffff,
+        .flags  = IORESOURCE_MEM,
 };
 
 static struct platform_device pcm037_flash = {
@@ -561,16 +544,65 @@ static struct platform_device pcm970_sja1000 = {
         .num_resources = ARRAY_SIZE(pcm970_sja1000_resources),
 };
 
+static struct mxc_usbh_platform_data otg_pdata = {
+        .portsc = MXC_EHCI_MODE_ULPI,
+        .flags  = MXC_EHCI_INTERFACE_DIFF_UNI,
+};
+
+static struct mxc_usbh_platform_data usbh2_pdata = {
+        .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 pcm037_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=", pcm037_otg_mode);
+
 /*
  * Board specific initialization.
  */
 static void __init mxc_board_init(void)
 {
         int ret;
+        u32 tmp;
+
+        mxc_iomux_set_gpr(MUX_PGP_UH2, 1);
 
         mxc_iomux_setup_multiple_pins(pcm037_pins, ARRAY_SIZE(pcm037_pins),
                         "pcm037");
 
+#define H2_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS \
+                | PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
+
+        mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, H2_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, H2_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, H2_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_STP, H2_PAD_CFG);
+        mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, H2_PAD_CFG); /* USBH2_DATA0 */
+        mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, H2_PAD_CFG); /* USBH2_DATA1 */
+        mxc_iomux_set_pad(MX31_PIN_SRXD6, H2_PAD_CFG);  /* USBH2_DATA2 */
+        mxc_iomux_set_pad(MX31_PIN_STXD6, H2_PAD_CFG);  /* USBH2_DATA3 */
+        mxc_iomux_set_pad(MX31_PIN_SFS3, H2_PAD_CFG);   /* USBH2_DATA4 */
+        mxc_iomux_set_pad(MX31_PIN_SCK3, H2_PAD_CFG);   /* USBH2_DATA5 */
+        mxc_iomux_set_pad(MX31_PIN_SRXD3, H2_PAD_CFG);  /* USBH2_DATA6 */
+        mxc_iomux_set_pad(MX31_PIN_STXD3, H2_PAD_CFG);  /* USBH2_DATA7 */
+
         if (pcm037_variant() == PCM037_EET)
                 mxc_iomux_setup_multiple_pins(pcm037_uart1_pins,
                         ARRAY_SIZE(pcm037_uart1_pins), "pcm037_uart1");
@@ -608,8 +640,6 @@ static void __init mxc_board_init(void)
         mxc_register_device(&mxcsdhc_device0, &sdhc_pdata);
         mxc_register_device(&mx3_ipu, &mx3_ipu_data);
         mxc_register_device(&mx3_fb, &mx3fb_pdata);
-        if (!gpio_usbotg_hs_activate())
-                mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
 
         /* CSI */
         /* Camera power: default - off */
@@ -623,6 +653,23 @@ static void __init mxc_board_init(void)
                 mxc_register_device(&mx3_camera, &camera_pdata);
 
         platform_device_register(&pcm970_sja1000);
+
+#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)
+                mxc_register_device(&mxc_otg_udc_device, &otg_device_pdata);
+
 }
 
 static void __init pcm037_timer_init(void)