From 7d16e8d3eb704f5f6eb5a271d5758b495634e8e6 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Mon, 10 Sep 2012 15:01:53 +0200 Subject: usb: gadget: push VID/PID/USB BCD module option into gadgets This patch moves the module options idVendor, idProduct and bcdDevice from composite.c into each gadgets. This ensures compatibility with current gadgets and removes the global variable which brings me step closer towards composite.c in libcomposite Acked-by: Michal Nazarewicz Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 63 ++++++++++++++++++++++++++---------------- 1 file changed, 39 insertions(+), 24 deletions(-) (limited to 'drivers/usb/gadget/composite.c') diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 8d81a5ccfa03..317a5ece3bd2 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -32,19 +32,6 @@ * published in the device descriptor, either numbers or strings or both. * String parameters are in UTF-8 (superset of ASCII's 7 bit characters). */ - -static ushort idVendor; -module_param(idVendor, ushort, S_IRUGO); -MODULE_PARM_DESC(idVendor, "USB Vendor ID"); - -static ushort idProduct; -module_param(idProduct, ushort, S_IRUGO); -MODULE_PARM_DESC(idProduct, "USB Product ID"); - -static ushort bcdDevice; -module_param(bcdDevice, ushort, S_IRUGO); -MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); - static char *iManufacturer; module_param(iManufacturer, charp, S_IRUGO); MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); @@ -1418,6 +1405,30 @@ static u8 override_id(struct usb_composite_dev *cdev, u8 *desc) return *desc; } +static void update_unchanged_dev_desc(struct usb_device_descriptor *new, + const struct usb_device_descriptor *old) +{ + __le16 idVendor; + __le16 idProduct; + __le16 bcdDevice; + + /* + * these variables may have been set in + * usb_composite_overwrite_options() + */ + idVendor = new->idVendor; + idProduct = new->idProduct; + bcdDevice = new->bcdDevice; + + *new = *old; + if (idVendor) + new->idVendor = idVendor; + if (idProduct) + new->idProduct = idProduct; + if (bcdDevice) + new->bcdDevice = bcdDevice; +} + static struct usb_composite_driver *to_cdriver(struct usb_gadget_driver *gdrv) { return container_of(gdrv, struct usb_composite_driver, gadget_driver); @@ -1473,17 +1484,7 @@ static int composite_bind(struct usb_gadget *gadget, if (status < 0) goto fail; - cdev->desc = *composite->dev; - - /* standardized runtime overrides for device ID data */ - if (idVendor) - cdev->desc.idVendor = cpu_to_le16(idVendor); - - if (idProduct) - cdev->desc.idProduct = cpu_to_le16(idProduct); - - if (bcdDevice) - cdev->desc.bcdDevice = cpu_to_le16(bcdDevice); + update_unchanged_dev_desc(&cdev->desc, composite->dev); /* string overrides */ if (iManufacturer || !cdev->desc.iManufacturer) { @@ -1686,3 +1687,17 @@ void usb_composite_setup_continue(struct usb_composite_dev *cdev) spin_unlock_irqrestore(&cdev->lock, flags); } +void usb_composite_overwrite_options(struct usb_composite_dev *cdev, + struct usb_composite_overwrite *covr) +{ + struct usb_device_descriptor *desc = &cdev->desc; + + if (covr->idVendor) + desc->idVendor = cpu_to_le16(covr->idVendor); + + if (covr->idProduct) + desc->idProduct = cpu_to_le16(covr->idProduct); + + if (covr->bcdDevice) + desc->bcdDevice = cpu_to_le16(covr->bcdDevice); +} -- cgit v1.2.3