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authorDavid Vrabel <david.vrabel@csr.com>2009-10-12 15:45:18 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2009-12-11 11:55:16 -0800
commitc3f22d92a1249665d4cd87a68a4078a56002c3ab (patch)
tree40aab1a3bd032835551bf6c97c21921294536960 /drivers/usb/wusbcore
parentd19fc291929aae528a40dd17c71a81f26254715d (diff)
downloadlwn-c3f22d92a1249665d4cd87a68a4078a56002c3ab.tar.gz
lwn-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/wusbcore')
-rw-r--r--drivers/usb/wusbcore/wusbhc.c32
-rw-r--r--drivers/usb/wusbcore/wusbhc.h1
2 files changed, 33 insertions, 0 deletions
diff --git a/drivers/usb/wusbcore/wusbhc.c b/drivers/usb/wusbcore/wusbhc.c
index ee6256f23636..eab86e4bc770 100644
--- a/drivers/usb/wusbcore/wusbhc.c
+++ b/drivers/usb/wusbcore/wusbhc.c
@@ -147,10 +147,40 @@ static ssize_t wusb_chid_store(struct device *dev,
}
static DEVICE_ATTR(wusb_chid, 0644, wusb_chid_show, wusb_chid_store);
+
+static ssize_t wusb_phy_rate_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+
+ return sprintf(buf, "%d\n", wusbhc->phy_rate);
+}
+
+static ssize_t wusb_phy_rate_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+ uint8_t phy_rate;
+ ssize_t result;
+
+ result = sscanf(buf, "%hhu", &phy_rate);
+ if (result != 1)
+ return -EINVAL;
+ if (phy_rate >= UWB_PHY_RATE_INVALID)
+ return -EINVAL;
+
+ wusbhc->phy_rate = phy_rate;
+ return size;
+}
+static DEVICE_ATTR(wusb_phy_rate, 0644, wusb_phy_rate_show, wusb_phy_rate_store);
+
/* Group all the WUSBHC attributes */
static struct attribute *wusbhc_attrs[] = {
&dev_attr_wusb_trust_timeout.attr,
&dev_attr_wusb_chid.attr,
+ &dev_attr_wusb_phy_rate.attr,
NULL,
};
@@ -177,6 +207,8 @@ int wusbhc_create(struct wusbhc *wusbhc)
int result = 0;
wusbhc->trust_timeout = WUSB_TRUST_TIMEOUT_MS;
+ wusbhc->phy_rate = UWB_PHY_RATE_INVALID - 1;
+
mutex_init(&wusbhc->mutex);
result = wusbhc_mmcie_create(wusbhc);
if (result < 0)
diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h
index 797c2453a35b..fd2fd4e277e1 100644
--- a/drivers/usb/wusbcore/wusbhc.h
+++ b/drivers/usb/wusbcore/wusbhc.h
@@ -253,6 +253,7 @@ struct wusbhc {
unsigned trust_timeout; /* in jiffies */
struct wusb_ckhdid chid;
+ uint8_t phy_rate;
struct wuie_host_info *wuie_host_info;
struct mutex mutex; /* locks everything else */