usb: gadget: langwell: drop langwell_otg support

Since there is no working (or even compilable) OTG_TRANSCEIVER support
for this driver, remove the dead code which depends on it at compile
time.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: stable@vger.kernel.org # v2.6.31+
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
index fa0fcc1..34e3bf8 100644 (file)
--- a/drivers/usb/gadget/langwell_udc.c
+++ b/drivers/usb/gadget/langwell_udc.c
@@ -11,11 +11,6 @@
 /* #undef      DEBUG */
 /* #undef      VERBOSE_DEBUG */
 
-#if defined(CONFIG_USB_LANGWELL_OTG)
-#define        OTG_TRANSCEIVER
-#endif
-
-
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
@@ -2315,13 +2310,9 @@ static void handle_setup_packet(struct langwell_udc *dev,
 
                        if (!gadget_is_otg(&dev->gadget))
                                break;
-                       else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE) {
+                       else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE)
                                dev->gadget.b_hnp_enable = 1;
-#ifdef OTG_TRANSCEIVER
-                               if (!dev->lotg->otg.default_a)
-                                       dev->lotg->hsm.b_hnp_enable = 1;
-#endif
-                       } else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT)
+                       else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT)
                                dev->gadget.a_hnp_support = 1;
                        else if (setup->bRequest ==
                                        USB_DEVICE_A_ALT_HNP_SUPPORT)
@@ -2752,12 +2743,6 @@ static void handle_usb_reset(struct langwell_udc *dev)
                dev->usb_state = USB_STATE_ATTACHED;
        }
 
-#ifdef OTG_TRANSCEIVER
-       /* refer to USB OTG 6.6.2.3 b_hnp_en is cleared */
-       if (!dev->lotg->otg.default_a)
-               dev->lotg->hsm.b_hnp_enable = 0;
-#endif
-
        dev_vdbg(&dev->pdev->dev, "<--- %s()\n", __func__);
 }
 
@@ -2770,29 +2755,6 @@ static void handle_bus_suspend(struct langwell_udc *dev)
        dev->resume_state = dev->usb_state;
        dev->usb_state = USB_STATE_SUSPENDED;
 
-#ifdef OTG_TRANSCEIVER
-       if (dev->lotg->otg.default_a) {
-               if (dev->lotg->hsm.b_bus_suspend_vld == 1) {
-                       dev->lotg->hsm.b_bus_suspend = 1;
-                       /* notify transceiver the state changes */
-                       if (spin_trylock(&dev->lotg->wq_lock)) {
-                               langwell_update_transceiver();
-                               spin_unlock(&dev->lotg->wq_lock);
-                       }
-               }
-               dev->lotg->hsm.b_bus_suspend_vld++;
-       } else {
-               if (!dev->lotg->hsm.a_bus_suspend) {
-                       dev->lotg->hsm.a_bus_suspend = 1;
-                       /* notify transceiver the state changes */
-                       if (spin_trylock(&dev->lotg->wq_lock)) {
-                               langwell_update_transceiver();
-                               spin_unlock(&dev->lotg->wq_lock);
-                       }
-               }
-       }
-#endif
-
        /* report suspend to the driver */
        if (dev->driver) {
                if (dev->driver->suspend) {
@@ -2823,11 +2785,6 @@ static void handle_bus_resume(struct langwell_udc *dev)
        if (dev->pdev->device != 0x0829)
                langwell_phy_low_power(dev, 0);
 
-#ifdef OTG_TRANSCEIVER
-       if (dev->lotg->otg.default_a == 0)
-               dev->lotg->hsm.a_bus_suspend = 0;
-#endif
-
        /* report resume to the driver */
        if (dev->driver) {
                if (dev->driver->resume) {
@@ -3020,7 +2977,6 @@ static void langwell_udc_remove(struct pci_dev *pdev)
 
        dev->done = &done;
 
-#ifndef        OTG_TRANSCEIVER
        /* free dTD dma_pool and dQH */
        if (dev->dtd_pool)
                dma_pool_destroy(dev->dtd_pool);
@@ -3032,7 +2988,6 @@ static void langwell_udc_remove(struct pci_dev *pdev)
        /* release SRAM caching */
        if (dev->has_sram && dev->got_sram)
                sram_deinit(dev);
-#endif
 
        if (dev->status_req) {
                kfree(dev->status_req->req.buf);
@@ -3045,7 +3000,6 @@ static void langwell_udc_remove(struct pci_dev *pdev)
        if (dev->got_irq)
                free_irq(pdev->irq, dev);
 
-#ifndef        OTG_TRANSCEIVER
        if (dev->cap_regs)
                iounmap(dev->cap_regs);
 
@@ -3055,13 +3009,6 @@ static void langwell_udc_remove(struct pci_dev *pdev)
 
        if (dev->enabled)
                pci_disable_device(pdev);
-#else
-       if (dev->transceiver) {
-               otg_put_transceiver(dev->transceiver);
-               dev->transceiver = NULL;
-               dev->lotg = NULL;
-       }
-#endif
 
        dev->cap_regs = NULL;
 
@@ -3072,9 +3019,7 @@ static void langwell_udc_remove(struct pci_dev *pdev)
        device_remove_file(&pdev->dev, &dev_attr_langwell_udc);
        device_remove_file(&pdev->dev, &dev_attr_remote_wakeup);
 
-#ifndef        OTG_TRANSCEIVER
        pci_set_drvdata(pdev, NULL);
-#endif
 
        /* free dev, wait for the release() finished */
        wait_for_completion(&done);
@@ -3089,9 +3034,7 @@ static int langwell_udc_probe(struct pci_dev *pdev,
                const struct pci_device_id *id)
 {
        struct langwell_udc     *dev;
-#ifndef        OTG_TRANSCEIVER
        unsigned long           resource, len;
-#endif
        void                    __iomem *base = NULL;
        size_t                  size;
        int                     retval;
@@ -3109,16 +3052,6 @@ static int langwell_udc_probe(struct pci_dev *pdev,
        dev->pdev = pdev;
        dev_dbg(&dev->pdev->dev, "---> %s()\n", __func__);
 
-#ifdef OTG_TRANSCEIVER
-       /* PCI device is already enabled by otg_transceiver driver */
-       dev->enabled = 1;
-
-       /* mem region and register base */
-       dev->region = 1;
-       dev->transceiver = otg_get_transceiver();
-       dev->lotg = otg_to_langwell(dev->transceiver);
-       base = dev->lotg->regs;
-#else
        pci_set_drvdata(pdev, dev);
 
        /* now all the pci goodies ... */
@@ -3139,7 +3072,6 @@ static int langwell_udc_probe(struct pci_dev *pdev,
        dev->region = 1;
 
        base = ioremap_nocache(resource, len);
-#endif
        if (base == NULL) {
                dev_err(&dev->pdev->dev, "can't map memory\n");
                retval = -EFAULT;
@@ -3163,7 +3095,6 @@ static int langwell_udc_probe(struct pci_dev *pdev,
        dev->got_sram = 0;
        dev_vdbg(&dev->pdev->dev, "dev->has_sram: %d\n", dev->has_sram);
 
-#ifndef        OTG_TRANSCEIVER
        /* enable SRAM caching if detected */
        if (dev->has_sram && !dev->got_sram)
                sram_init(dev);
@@ -3182,7 +3113,6 @@ static int langwell_udc_probe(struct pci_dev *pdev,
                goto error;
        }
        dev->got_irq = 1;
-#endif
 
        /* set stopped bit */
        dev->stopped = 1;
@@ -3257,10 +3187,8 @@ static int langwell_udc_probe(struct pci_dev *pdev,
        dev->remote_wakeup = 0;
        dev->dev_status = 1 << USB_DEVICE_SELF_POWERED;
 
-#ifndef        OTG_TRANSCEIVER
        /* reset device controller */
        langwell_udc_reset(dev);
-#endif
 
        /* initialize gadget structure */
        dev->gadget.ops = &langwell_ops;        /* usb_gadget_ops */
@@ -3268,9 +3196,6 @@ static int langwell_udc_probe(struct pci_dev *pdev,
        INIT_LIST_HEAD(&dev->gadget.ep_list);   /* ep_list */
        dev->gadget.speed = USB_SPEED_UNKNOWN;  /* speed */
        dev->gadget.max_speed = USB_SPEED_HIGH; /* support dual speed */
-#ifdef OTG_TRANSCEIVER
-       dev->gadget.is_otg = 1;                 /* support otg mode */
-#endif
 
        /* the "gadget" abstracts/virtualizes the controller */
        dev_set_name(&dev->gadget.dev, "gadget");
@@ -3282,10 +3207,8 @@ static int langwell_udc_probe(struct pci_dev *pdev,
        /* controller endpoints reinit */
        eps_reinit(dev);
 
-#ifndef        OTG_TRANSCEIVER
        /* reset ep0 dQH and endptctrl */
        ep0_reset(dev);
-#endif
 
        /* create dTD dma_pool resource */
        dev->dtd_pool = dma_pool_create("langwell_dtd",
@@ -3525,22 +3448,14 @@ static struct pci_driver langwell_pci_driver = {
 
 static int __init init(void)
 {
-#ifdef OTG_TRANSCEIVER
-       return langwell_register_peripheral(&langwell_pci_driver);
-#else
        return pci_register_driver(&langwell_pci_driver);
-#endif
 }
 module_init(init);
 
 
 static void __exit cleanup(void)
 {
-#ifdef OTG_TRANSCEIVER
-       return langwell_unregister_peripheral(&langwell_pci_driver);
-#else
        pci_unregister_driver(&langwell_pci_driver);
-#endif
 }
 module_exit(cleanup);
 

diff --git a/drivers/usb/gadget/langwell_udc.h b/drivers/usb/gadget/langwell_udc.h
index ef79e24..d6e78ac 100644 (file)
--- a/drivers/usb/gadget/langwell_udc.h
+++ b/drivers/usb/gadget/langwell_udc.h
@@ -8,7 +8,6 @@
  */
 
 #include <linux/usb/langwell_udc.h>
-#include <linux/usb/langwell_otg.h>
 
 /*-------------------------------------------------------------------------*/