iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ath10k: debugfs file to enable Bluetooth coexistence feature

Browse Source 
As not all QCA98XX radios are not connected to Bluetooth modules, enabling the
BT coex feature in firmware will have side effects if the radio's GPIO are
connected with other (non-BT) HW modules. Add debugfs file to control the
firmware BT coex logic and set the feature as disable by default to avoid that
btcoex is accidentally enabled.

To enable this feature, execute:

echo 1 > /sys/kernel/debug/ieee80211/phyX/ath10k/btcoex

To disable:

echo 0 > /sys/kernel/debug/ieee80211/phyX/ath10k/btcoex

The firmware support this feature since 10.2.4.54 on 2G-only board, dual band
or 5G boards don't support this. The feature's name is WMI_SERVICE_COEX_GPIO
and the btcoex file is not created if firmware doesn't support it.

Signed-off-by: Yanbo Li <yanbol@qca.qualcomm.com>
[kvalo@qca.qualcomm.com: use btcoex filename and other smaller fixes]
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Yanbo Li 2015-10-31 11:07:21 +02:00 committed by Kalle Valo
parent afb0bf7f53
commit 844fa57227
3 changed files with 73 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/ath/ath10k/core.h
View File

@ -538,6 +538,9 @@ enum ath10k_dev_flags {
/* Disable HW crypto engine */
ATH10K_FLAG_HW_CRYPTO_DISABLED,
/* Bluetooth coexistance enabled */
ATH10K_FLAG_BTCOEX,
};
enum ath10k_cal_mode {

66
drivers/net/wireless/ath/ath10k/debug.c
View File

@ -2074,6 +2074,68 @@ static const struct file_operations fops_quiet_period = {
.open = simple_open
};
static ssize_t ath10k_write_btcoex(struct file *file,
const char __user *ubuf,
size_t count, loff_t *ppos)
{
struct ath10k *ar = file->private_data;
char buf[32];
size_t buf_size;
bool val;
buf_size = min(count, (sizeof(buf) - 1));
if (copy_from_user(buf, ubuf, buf_size))
return -EFAULT;
buf[buf_size] = '\0';
if (strtobool(buf, &val) != 0)
return -EINVAL;
mutex_lock(&ar->conf_mutex);
if (!(test_bit(ATH10K_FLAG_BTCOEX, &ar->dev_flags) ^ val))
goto exit;
if (val)
set_bit(ATH10K_FLAG_BTCOEX, &ar->dev_flags);
else
clear_bit(ATH10K_FLAG_BTCOEX, &ar->dev_flags);
if (ar->state != ATH10K_STATE_ON)
goto exit;
ath10k_info(ar, "restarting firmware due to btcoex change");
queue_work(ar->workqueue, &ar->restart_work);
exit:
mutex_unlock(&ar->conf_mutex);
return count;
}
static ssize_t ath10k_read_btcoex(struct file *file, char __user *ubuf,
size_t count, loff_t *ppos)
{
char buf[32];
struct ath10k *ar = file->private_data;
int len = 0;
mutex_lock(&ar->conf_mutex);
len = scnprintf(buf, sizeof(buf) - len, "%d\n",
test_bit(ATH10K_FLAG_BTCOEX, &ar->dev_flags));
mutex_unlock(&ar->conf_mutex);
return simple_read_from_buffer(ubuf, count, ppos, buf, len);
}
static const struct file_operations fops_btcoex = {
.read = ath10k_read_btcoex,
.write = ath10k_write_btcoex,
.open = simple_open
};
int ath10k_debug_create(struct ath10k *ar)
{
ar->debug.fw_crash_data = vzalloc(sizeof(*ar->debug.fw_crash_data));
@ -2183,6 +2245,10 @@ int ath10k_debug_register(struct ath10k *ar)
debugfs_create_file("tpc_stats", S_IRUSR,
ar->debug.debugfs_phy, ar, &fops_tpc_stats);
if (test_bit(WMI_SERVICE_COEX_GPIO, ar->wmi.svc_map))
debugfs_create_file("btcoex", S_IRUGO | S_IWUSR,
ar->debug.debugfs_phy, ar, &fops_btcoex);
return 0;
}

5
drivers/net/wireless/ath/ath10k/wmi.c
View File

@ -5476,8 +5476,11 @@ static struct sk_buff *ath10k_wmi_10_2_op_gen_init(struct ath10k *ar)
cmd = (struct wmi_init_cmd_10_2 *)buf->data;
features = WMI_10_2_RX_BATCH_MODE;
if (test_bit(WMI_SERVICE_COEX_GPIO, ar->wmi.svc_map))
if (test_bit(ATH10K_FLAG_BTCOEX, &ar->dev_flags) &&
test_bit(WMI_SERVICE_COEX_GPIO, ar->wmi.svc_map))
features |= WMI_10_2_COEX_GPIO;
cmd->resource_config.feature_mask = __cpu_to_le32(features);
memcpy(&cmd->resource_config.common, &config, sizeof(config));