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wil6210: support configurable board file via sysfs

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Add a sysfs allowing to override the board file containing
the RF characteristics of the 11ad device.
The new board file will be used the next time the interface
is brought up.
This change is intended to support platforms with multiple
11ad devices connected. Each 11ad device can be connected
to a different antenna module and the HW cannot automatically
detect the type of antenna connected, so the board file must
be explicitly specified for each device.

Change-Id: I40746032d9314057c64575bca96f3445816e5457
Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
[liord@codeaurora.org: merge conflicts, checkpatch errors]
Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Alexei Avshalom Lazar <ailizaro@codeaurora.org>
This commit is contained in:
Dedy Lansky 2019-12-02 16:04:02 +02:00 • committed by Alexei Avshalom Lazar
commit efb3116f2a
2 changed files with 46 additions and 0 deletions
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1
drivers/net/wireless/ath/wil6210/main.c
View file

@ -832,6 +832,7 @@ void wil_priv_deinit(struct wil6210_priv *wil)
wmi_event_flush(wil);
destroy_workqueue(wil->wq_service);
destroy_workqueue(wil->wmi_wq);
kfree(wil->board_file);
kfree(wil->brd_info);
}

45
drivers/net/wireless/ath/wil6210/sysfs.c
View file

@ -81,6 +81,50 @@ ftm_txrx_offset_store(struct device *dev,
static DEVICE_ATTR_RW(ftm_txrx_offset);
static ssize_t
board_file_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct wil6210_priv *wil = dev_get_drvdata(dev);
wil_get_board_file(wil, buf, PAGE_SIZE);
strlcat(buf, "\n", PAGE_SIZE);
return strlen(buf);
}
static ssize_t
board_file_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct wil6210_priv *wil = dev_get_drvdata(dev);
size_t len;
mutex_lock(&wil->mutex);
kfree(wil->board_file);
wil->board_file = NULL;
len = count;
if (buf[count - 1] == '\n')
len--;
len = strnlen(buf, len);
if (len > 0) {
wil->board_file = kmalloc(len + 1, GFP_KERNEL);
if (!wil->board_file) {
mutex_unlock(&wil->mutex);
return -ENOMEM;
}
strlcpy(wil->board_file, buf, len + 1);
}
mutex_unlock(&wil->mutex);
return count;
}
static DEVICE_ATTR_RW(board_file);
static ssize_t
thermal_throttling_show(struct device *dev, struct device_attribute *attr,
char *buf)
@ -291,6 +335,7 @@ static DEVICE_ATTR_RW(snr_thresh);
static struct attribute *wil6210_sysfs_entries[] = {
&dev_attr_ftm_txrx_offset.attr,
&dev_attr_board_file.attr,
&dev_attr_thermal_throttling.attr,
&dev_attr_fst_link_loss.attr,
&dev_attr_snr_thresh.attr,