wusbcore: add sysfs attribute for DNTS count and interval (8bf1d071) · Commits · 戴 / test

drivers/usb/wusbcore/mmc.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -214,9 +214,9 @@ int wusbhc_start(struct wusbhc *wusbhc)
		dev_err(dev, "error starting security in the HC: %d\n", result);
		goto error_sec_start;
		}
		/* FIXME: the choice of the DNTS parameters is somewhat
		* arbitrary */
		result = wusbhc->set_num_dnts(wusbhc, 0, 15);

		result = wusbhc->set_num_dnts(wusbhc, wusbhc->dnts_interval,
		wusbhc->dnts_num_slots);
		if (result < 0) {
		dev_err(dev, "Cannot set DNTS parameters: %d\n", result);
		goto error_set_num_dnts;

+34 −0

Original line number	Diff line number	Diff line
		@@ -175,11 +175,42 @@ static ssize_t wusb_phy_rate_store(struct device *dev,
		}
		static DEVICE_ATTR(wusb_phy_rate, 0644, wusb_phy_rate_show, wusb_phy_rate_store);

		static ssize_t wusb_dnts_show(struct device *dev,
		struct device_attribute *attr,
		char *buf)
		{
		struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);

		return sprintf(buf, "num slots: %d\ninterval: %dms\n",
		wusbhc->dnts_num_slots, wusbhc->dnts_interval);
		}

		static ssize_t wusb_dnts_store(struct device *dev,
		struct device_attribute *attr,
		const char *buf, size_t size)
		{
		struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
		uint8_t num_slots, interval;
		ssize_t result;

		result = sscanf(buf, "%hhu %hhu", &num_slots, &interval);

		if (result != 2)
		return -EINVAL;

		wusbhc->dnts_num_slots = num_slots;
		wusbhc->dnts_interval = interval;

		return size;
		}
		static DEVICE_ATTR(wusb_dnts, 0644, wusb_dnts_show, wusb_dnts_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,
		&dev_attr_wusb_dnts.attr,
		NULL,
		};

		@@ -205,8 +236,11 @@ int wusbhc_create(struct wusbhc *wusbhc)
		{
		int result = 0;

		/* set defaults. These can be overwritten using sysfs attributes. */
		wusbhc->trust_timeout = WUSB_TRUST_TIMEOUT_MS;
		wusbhc->phy_rate = UWB_PHY_RATE_INVALID - 1;
		wusbhc->dnts_num_slots = 4;
		wusbhc->dnts_interval = 2;

		mutex_init(&wusbhc->mutex);
		result = wusbhc_mmcie_create(wusbhc);

+2 −0

Original line number	Diff line number	Diff line
		@@ -252,6 +252,8 @@ struct wusbhc {
		unsigned trust_timeout; /* in jiffies */
		struct wusb_ckhdid chid;
		uint8_t phy_rate;
		uint8_t dnts_num_slots;
		uint8_t dnts_interval;
		struct wuie_host_info *wuie_host_info;

		struct mutex mutex; /* locks everything else */