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authorDavid Vrabel <david.vrabel@csr.com>2009-10-12 17:45:18 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 20:55:16 +0100
commitc3f22d92a1249665d4cd87a68a4078a56002c3ab (patch)
tree40aab1a3bd032835551bf6c97c21921294536960 /drivers/usb/host/whci
parentusb: whci-hcd: decode more QHead fields in the debug files (diff)
downloadlinux-c3f22d92a1249665d4cd87a68a4078a56002c3ab.tar.xz
linux-c3f22d92a1249665d4cd87a68a4078a56002c3ab.zip
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>
Diffstat (limited to 'drivers/usb/host/whci')
-rw-r--r--drivers/usb/host/whci/qset.c24
-rw-r--r--drivers/usb/host/whci/whci-hc.h9
2 files changed, 22 insertions, 11 deletions
diff --git a/drivers/usb/host/whci/qset.c b/drivers/usb/host/whci/qset.c
index 08280869ed1c..39e855a55c63 100644
--- a/drivers/usb/host/whci/qset.c
+++ b/drivers/usb/host/whci/qset.c
@@ -49,11 +49,13 @@ struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags)
* 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 @@ static void qset_fill_qh(struct whc_qset *qset, struct urb *urb)
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 @@ static void qset_fill_qh(struct whc_qset *qset, struct urb *urb)
* 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 @@ struct whc_qset *get_qset(struct whc *whc, struct urb *urb,
qset->ep = urb->ep;
urb->ep->hcpriv = qset;
- qset_fill_qh(qset, urb);
+ qset_fill_qh(whc, qset, urb);
}
return qset;
}
diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h
index d5e5c3aacced..4d4cbc0730bf 100644
--- a/drivers/usb/host/whci/whci-hc.h
+++ b/drivers/usb/host/whci/whci-hc.h
@@ -172,14 +172,7 @@ struct whc_qhead {
#define QH_INFO3_MAX_DELAY(d) ((d) << 0) /* maximum stream delay in 125 us units (isoc only) */
#define QH_INFO3_INTERVAL(i) ((i) << 16) /* segment interval in 125 us units (isoc only) */
-#define QH_INFO3_TX_RATE_53_3 (0 << 24)
-#define QH_INFO3_TX_RATE_80 (1 << 24)
-#define QH_INFO3_TX_RATE_106_7 (2 << 24)
-#define QH_INFO3_TX_RATE_160 (3 << 24)
-#define QH_INFO3_TX_RATE_200 (4 << 24)
-#define QH_INFO3_TX_RATE_320 (5 << 24)
-#define QH_INFO3_TX_RATE_400 (6 << 24)
-#define QH_INFO3_TX_RATE_480 (7 << 24)
+#define QH_INFO3_TX_RATE(r) ((r) << 24) /* PHY rate (see [ECMA-368] section 10.3.1.1) */
#define QH_INFO3_TX_PWR(p) ((p) << 29) /* transmit power (see [WUSB] section 5.2.1.2) */
#define QH_STATUS_FLOW_CTRL (1 << 15)