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wl12xx: add rx_streaming debugfs entry

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Allow control over rx_streaming interval and operation mode
(always/only on coex) via debugfs.

e.g.
echo 100 > /debug/ieee80211/phy0/wl12xx/rx_streaming/interval
echo 1 > /debug/ieee80211/phy0/wl12xx/rx_streaming/always

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
This commit is contained in:
Eliad Peller 2011-05-15 11:10:30 +03:00 committed by Luciano Coelho
parent 77ddaa108f
commit c84368e01a
1 changed files with 135 additions and 1 deletions
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136
drivers/net/wireless/wl12xx/debugfs.c
View file

@ -71,6 +71,14 @@ static const struct file_operations name## _ops = { \
if (!entry || IS_ERR(entry)) \
goto err; \
#define DEBUGFS_ADD_PREFIX(prefix, name, parent) \
do { \
entry = debugfs_create_file(#name, 0400, parent, \
wl, &prefix## _## name## _ops); \
if (!entry || IS_ERR(entry)) \
goto err; \
} while (0);
#define DEBUGFS_FWSTATS_FILE(sub, name, fmt) \
static ssize_t sub## _ ##name## _read(struct file *file, \
char __user *userbuf, \
@ -527,11 +535,129 @@ static const struct file_operations beacon_interval_ops = {
.llseek = default_llseek,
};
static ssize_t rx_streaming_interval_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wl1271 *wl = file->private_data;
char buf[10];
size_t len;
unsigned long value;
int ret;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
ret = kstrtoul(buf, 0, &value);
if (ret < 0) {
wl1271_warning("illegal value in rx_streaming_interval!");
return -EINVAL;
}
/* valid values: 0, 10-100 */
if (value && (value < 10 || value > 100)) {
wl1271_warning("value is not in range!");
return -ERANGE;
}
mutex_lock(&wl->mutex);
wl->conf.rx_streaming.interval = value;
ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
wl1271_recalc_rx_streaming(wl);
wl1271_ps_elp_sleep(wl);
out:
mutex_unlock(&wl->mutex);
return count;
}
static ssize_t rx_streaming_interval_read(struct file *file,
char __user *userbuf,
size_t count, loff_t *ppos)
{
struct wl1271 *wl = file->private_data;
return wl1271_format_buffer(userbuf, count, ppos,
"%d\n", wl->conf.rx_streaming.interval);
}
static const struct file_operations rx_streaming_interval_ops = {
.read = rx_streaming_interval_read,
.write = rx_streaming_interval_write,
.open = wl1271_open_file_generic,
.llseek = default_llseek,
};
static ssize_t rx_streaming_always_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wl1271 *wl = file->private_data;
char buf[10];
size_t len;
unsigned long value;
int ret;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
ret = kstrtoul(buf, 0, &value);
if (ret < 0) {
wl1271_warning("illegal value in rx_streaming_write!");
return -EINVAL;
}
/* valid values: 0, 10-100 */
if (!(value == 0 || value == 1)) {
wl1271_warning("value is not in valid!");
return -EINVAL;
}
mutex_lock(&wl->mutex);
wl->conf.rx_streaming.always = value;
ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
wl1271_recalc_rx_streaming(wl);
wl1271_ps_elp_sleep(wl);
out:
mutex_unlock(&wl->mutex);
return count;
}
static ssize_t rx_streaming_always_read(struct file *file,
char __user *userbuf,
size_t count, loff_t *ppos)
{
struct wl1271 *wl = file->private_data;
return wl1271_format_buffer(userbuf, count, ppos,
"%d\n", wl->conf.rx_streaming.always);
}
static const struct file_operations rx_streaming_always_ops = {
.read = rx_streaming_always_read,
.write = rx_streaming_always_write,
.open = wl1271_open_file_generic,
.llseek = default_llseek,
};
static int wl1271_debugfs_add_files(struct wl1271 *wl,
struct dentry *rootdir)
{
int ret = 0;
struct dentry *entry, *stats;
struct dentry *entry, *stats, *streaming;
stats = debugfs_create_dir("fw-statistics", rootdir);
if (!stats || IS_ERR(stats)) {
@ -640,6 +766,14 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl,
DEBUGFS_ADD(dtim_interval, rootdir);
DEBUGFS_ADD(beacon_interval, rootdir);
streaming = debugfs_create_dir("rx_streaming", rootdir);
if (!streaming || IS_ERR(streaming))
goto err;
DEBUGFS_ADD_PREFIX(rx_streaming, interval, streaming);
DEBUGFS_ADD_PREFIX(rx_streaming, always, streaming);
return 0;
err: