diff options
| author | David Vrabel <david.vrabel@csr.com> | 2009-10-12 15:45:18 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 11:55:16 -0800 |
| commit | c3f22d92a1249665d4cd87a68a4078a56002c3ab (patch) | |
| tree | 40aab1a3bd032835551bf6c97c21921294536960 /drivers/usb/wusbcore | |
| parent | d19fc291929aae528a40dd17c71a81f26254715d (diff) | |
| download | lwn-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.c | 32 | ||||
| -rw-r--r-- | drivers/usb/wusbcore/wusbhc.h | 1 |
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 */ |