wl12xx: add forced_ps debugfs file (20ae7e5e) · Commits · 戴 / test

drivers/net/wireless/wl12xx/debugfs.c

+70 −0

Original line number	Diff line number	Diff line
		@@ -376,6 +376,75 @@ static const struct file_operations dynamic_ps_timeout_ops = {
		.llseek = default_llseek,
		};

		static ssize_t forced_ps_read(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		struct wl1271 *wl = file->private_data;

		return wl1271_format_buffer(user_buf, count,
		ppos, "%d\n",
		wl->conf.conn.forced_ps);
		}

		static ssize_t forced_ps_write(struct file *file,
		const char __user *user_buf,
		size_t count, loff_t *ppos)
		{
		struct wl1271 *wl = file->private_data;
		struct wl12xx_vif *wlvif;
		unsigned long value;
		int ret, ps_mode;

		ret = kstrtoul_from_user(user_buf, count, 10, &value);
		if (ret < 0) {
		wl1271_warning("illegal value in forced_ps");
		return -EINVAL;
		}

		if (value != 1 && value != 0) {
		wl1271_warning("forced_ps should be either 0 or 1");
		return -ERANGE;
		}

		mutex_lock(&wl->mutex);

		if (wl->conf.conn.forced_ps == value)
		goto out;

		wl->conf.conn.forced_ps = value;

		if (wl->state == WL1271_STATE_OFF)
		goto out;

		ret = wl1271_ps_elp_wakeup(wl);
		if (ret < 0)
		goto out;

		/* In case we're already in PSM, trigger it again to switch mode
		* immediately without waiting for re-association
		*/

		ps_mode = value ? STATION_POWER_SAVE_MODE : STATION_AUTO_PS_MODE;

		wl12xx_for_each_wlvif_sta(wl, wlvif) {
		if (test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags))
		wl1271_ps_set_mode(wl, wlvif, ps_mode);
		}

		wl1271_ps_elp_sleep(wl);

		out:
		mutex_unlock(&wl->mutex);
		return count;
		}

		static const struct file_operations forced_ps_ops = {
		.read = forced_ps_read,
		.write = forced_ps_write,
		.open = wl1271_open_file_generic,
		.llseek = default_llseek,
		};

		static ssize_t driver_state_read(struct file file, char __user user_buf,
		size_t count, loff_t *ppos)
		{
		@@ -1011,6 +1080,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl,
		DEBUGFS_ADD(beacon_interval, rootdir);
		DEBUGFS_ADD(beacon_filtering, rootdir);
		DEBUGFS_ADD(dynamic_ps_timeout, rootdir);
		DEBUGFS_ADD(forced_ps, rootdir);

		streaming = debugfs_create_dir("rx_streaming", rootdir);
		if (!streaming \|\| IS_ERR(streaming))

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