USB: wusb: add wusb_phy_rate sysfs file to host controllers
Add the wusb_phy_rate sysfs file to Wireless USB host controllers. This
sets the maximum PHY rate that will be used for all connected devices.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
index 0828086..39e855a 100644
--- a/drivers/usb/host/whci/qset.c
+++ b/drivers/usb/host/whci/qset.c
@@ -49,11 +49,13 @@
* state
* @urb: an urb for a transfer to this endpoint
*/
-static void qset_fill_qh(struct whc_qset *qset, struct urb *urb)
+static void qset_fill_qh(struct whc *whc, struct whc_qset *qset, struct urb *urb)
{
struct usb_device *usb_dev = urb->dev;
+ struct wusb_dev *wusb_dev = usb_dev->wusb_dev;
struct usb_wireless_ep_comp_descriptor *epcd;
bool is_out;
+ uint8_t phy_rate;
is_out = usb_pipeout(urb->pipe);
@@ -68,6 +70,22 @@
qset->max_burst = 1;
}
+ /*
+ * Initial PHY rate is 53.3 Mbit/s for control endpoints or
+ * the maximum supported by the device for other endpoints
+ * (unless limited by the user).
+ */
+ if (usb_pipecontrol(urb->pipe))
+ phy_rate = UWB_PHY_RATE_53;
+ else {
+ uint16_t phy_rates;
+
+ phy_rates = le16_to_cpu(wusb_dev->wusb_cap_descr->wPHYRates);
+ phy_rate = fls(phy_rates) - 1;
+ if (phy_rate > whc->wusbhc.phy_rate)
+ phy_rate = whc->wusbhc.phy_rate;
+ }
+
qset->qh.info1 = cpu_to_le32(
QH_INFO1_EP(usb_pipeendpoint(urb->pipe))
| (is_out ? QH_INFO1_DIR_OUT : QH_INFO1_DIR_IN)
@@ -87,7 +105,7 @@
* strength and can presumably guess the Tx power required
* from that? */
qset->qh.info3 = cpu_to_le32(
- QH_INFO3_TX_RATE_53_3
+ QH_INFO3_TX_RATE(phy_rate)
| QH_INFO3_TX_PWR(0) /* 0 == max power */
);
@@ -149,7 +167,7 @@
qset->ep = urb->ep;
urb->ep->hcpriv = qset;
- qset_fill_qh(qset, urb);
+ qset_fill_qh(whc, qset, urb);
}
return qset;
}