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qcacld-3.0: Vendor command to scale TX power

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This is for FR23278: Runtime configuration of softAP Tx power.
The value that send by the vendor command will set the power levels
as below:
	0 --- no scaling, 100%
	1 --- 50% of max power
	2 --- 25% of max power
	3 --- 12% of max power
	4 --- minimum power
Another vendor command is to decrease the power by actual db value.

CRs-fixed: 941772
Change-Id: I61d48299b4af361c214e2ab8bb1fa848161431de
This commit is contained in:
Peng Xu 2015-10-16 16:02:26 -07:00 • committed by Akash Patel
commit 4d67c8fbb9
4 changed files with 273 additions and 0 deletions
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173
core/hdd/src/wlan_hdd_cfg80211.c
View file

@ -138,6 +138,8 @@
#define HDD_CHANNEL_14 14
#define MAX_TXPOWER_SCALE 4
static const u32 hdd_cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
@ -4604,6 +4606,161 @@ static int wlan_hdd_cfg80211_set_ota_test(struct wiphy *wiphy,
return ret;
}
/**
* __wlan_hdd_cfg80211_txpower_scale () - txpower scaling
* @wiphy: Pointer to wireless phy
* @wdev: Pointer to wireless device
* @data: Pointer to data
* @data_len: Data length
*
* Return: 0 on success, negative errno on failure
*/
static int __wlan_hdd_cfg80211_txpower_scale(struct wiphy *wiphy,
struct wireless_dev *wdev,
const void *data,
int data_len)
{
hdd_context_t *hdd_ctx = wiphy_priv(wiphy);
struct net_device *dev = wdev->netdev;
hdd_adapter_t *adapter = NULL;
int ret = 0;
struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_MAX + 1];
uint8_t scale_value;
ret = wlan_hdd_validate_context(hdd_ctx);
if (ret)
return ret;
adapter = WLAN_HDD_GET_PRIV_PTR(dev);
if (nla_parse(tb, QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_MAX,
data, data_len, NULL)) {
hdd_err("Invalid ATTR");
return -EINVAL;
}
if (!tb[QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE]) {
hdd_err("attr tx power scale failed");
return -EINVAL;
}
scale_value = nla_get_u8(tb
[QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE]);
if (scale_value > MAX_TXPOWER_SCALE) {
hdd_err("Invalid tx power scale level");
return -EINVAL;
}
ret = wma_set_tx_power_scale(adapter->sessionId, scale_value);
if (ret != 0) {
hdd_err("Set tx power scale failed");
return -EINVAL;
}
return 0;
}
/**
* wlan_hdd_cfg80211_txpower_scale () - txpower scaling
* @wiphy: Pointer to wireless phy
* @wdev: Pointer to wireless device
* @data: Pointer to data
* @data_len: Data length
*
* Return: 0 on success, negative errno on failure
*/
static int wlan_hdd_cfg80211_txpower_scale(struct wiphy *wiphy,
struct wireless_dev *wdev,
const void *data,
int data_len)
{
int ret = 0;
cds_ssr_protect(__func__);
ret = __wlan_hdd_cfg80211_txpower_scale(wiphy, wdev,
data, data_len);
cds_ssr_unprotect(__func__);
return ret;
}
/**
* __wlan_hdd_cfg80211_txpower_scale_decr_db () - txpower scaling
* @wiphy: Pointer to wireless phy
* @wdev: Pointer to wireless device
* @data: Pointer to data
* @data_len: Data length
*
* Return: 0 on success, negative errno on failure
*/
static int __wlan_hdd_cfg80211_txpower_scale_decr_db(struct wiphy *wiphy,
struct wireless_dev *wdev,
const void *data,
int data_len)
{
hdd_context_t *hdd_ctx = wiphy_priv(wiphy);
struct net_device *dev = wdev->netdev;
hdd_adapter_t *adapter = NULL;
int ret = 0;
struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_MAX + 1];
uint8_t scale_value;
ret = wlan_hdd_validate_context(hdd_ctx);
if (ret)
return ret;
adapter = WLAN_HDD_GET_PRIV_PTR(dev);
if (nla_parse(tb, QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_MAX,
data, data_len, NULL)) {
hdd_err("Invalid ATTR");
return -EINVAL;
}
if (!tb[QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB]) {
hdd_err("attr tx power decrease db value failed");
return -EINVAL;
}
scale_value = nla_get_u8(tb
[QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB]);
ret = wma_set_tx_power_scale_decr_db(adapter->sessionId, scale_value);
if (ret != 0) {
hdd_err("Set tx power decrease db failed");
return -EINVAL;
}
return 0;
}
/**
* wlan_hdd_cfg80211_txpower_scale_decr_db () - txpower scaling
* @wiphy: Pointer to wireless phy
* @wdev: Pointer to wireless device
* @data: Pointer to data
* @data_len: Data length
*
* Return: 0 on success, negative errno on failure
*/
static int wlan_hdd_cfg80211_txpower_scale_decr_db(struct wiphy *wiphy,
struct wireless_dev *wdev,
const void *data,
int data_len)
{
int ret = 0;
cds_ssr_protect(__func__);
ret = __wlan_hdd_cfg80211_txpower_scale_decr_db(wiphy, wdev,
data, data_len);
cds_ssr_unprotect(__func__);
return ret;
}
const struct wiphy_vendor_command hdd_wiphy_vendor_commands[] = {
{
.info.vendor_id = QCA_NL80211_VENDOR_ID,
@ -5042,6 +5199,22 @@ const struct wiphy_vendor_command hdd_wiphy_vendor_commands[] = {
.doit = wlan_hdd_cfg80211_set_gateway_params
},
#endif /* FEATURE_LFR_SUBNET_DETECTION */
{
.info.subcmd = QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE,
.flags = WIPHY_VENDOR_CMD_NEED_WDEV |
WIPHY_VENDOR_CMD_NEED_NETDEV |
WIPHY_VENDOR_CMD_NEED_RUNNING,
.doit = wlan_hdd_cfg80211_txpower_scale
},
{
.info.vendor_id = QCA_NL80211_VENDOR_ID,
.info.subcmd =
QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE_DECR_DB,
.flags = WIPHY_VENDOR_CMD_NEED_WDEV |
WIPHY_VENDOR_CMD_NEED_NETDEV |
WIPHY_VENDOR_CMD_NEED_RUNNING,
.doit = wlan_hdd_cfg80211_txpower_scale_decr_db
},
};
/*

39
core/hdd/src/wlan_hdd_cfg80211.h
View file

@ -250,6 +250,8 @@ typedef enum {
* @QCA_NL80211_VENDOR_SUBCMD_SCAN_DONE: vendor scan complete
* @QCA_NL80211_VENDOR_SUBCMD_OTA_TEST: enable OTA test
* @QCA_NL80211_VENDOR_SUBCMD_GW_PARAM_CONFIG: set gateway parameters
* @QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE: set tx power by percentage
* @QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE_DECR_DB: reduce tx power by DB
*/
enum qca_nl80211_vendor_subcmds {
@ -364,6 +366,10 @@ enum qca_nl80211_vendor_subcmds {
/* OTA test subcommand */
QCA_NL80211_VENDOR_SUBCMD_OTA_TEST = 108,
/* Tx power scaling subcommands */
QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE = 109,
/* Tx power scaling in db subcommands */
QCA_NL80211_VENDOR_SUBCMD_SET_TXPOWER_SCALE_DECR_DB = 115,
};
@ -2219,6 +2225,39 @@ enum qca_vendor_attr_ota_test {
QCA_WLAN_VENDOR_ATTR_OTA_TEST_AFTER_LAST - 1
};
/** enum qca_vendor_attr_txpower_scale - vendor sub commands index
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_INVALID: invalid value
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE: scaling value
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_AFTER_LAST: last value
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_MAX: max value
*/
enum qca_vendor_attr_txpower_scale {
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_INVALID,
/* 8-bit unsigned value to indicate the scaling of tx power */
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE,
/* keep last */
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_AFTER_LAST,
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_MAX =
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_AFTER_LAST - 1
};
/**
* enum qca_vendor_attr_txpower_scale_decr_db - vendor sub commands index
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_INVALID: invalid value
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB: scaling value
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_AFTER_LAST: last value
* @QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_MAX: max value
*/
enum qca_vendor_attr_txpower_scale_decr_db {
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_INVALID,
/* 8-bit unsigned value to indicate the scaling of tx power */
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB,
/* keep last */
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_AFTER_LAST,
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_MAX =
QCA_WLAN_VENDOR_ATTR_TXPOWER_SCALE_DECR_DB_AFTER_LAST - 1
};
struct cfg80211_bss *wlan_hdd_cfg80211_update_bss_db(hdd_adapter_t *pAdapter,
tCsrRoamInfo *pRoamInfo);

2
core/wma/inc/wma_api.h
View file

@ -235,4 +235,6 @@ static inline CDF_STATUS wma_send_egap_conf_params(WMA_HANDLE handle,
return CDF_STATUS_E_NOSUPPORT;
}
#endif
CDF_STATUS wma_set_tx_power_scale(uint8_t vdev_id, int value);
CDF_STATUS wma_set_tx_power_scale_decr_db(uint8_t vdev_id, int value);
#endif

59
core/wma/src/wma_power.c
View file

@ -2252,3 +2252,62 @@ void wma_set_resume_dtim(tp_wma_handle wma)
}
}
/**
* wma_set_tx_power_scale() - set tx power scale
* @vdev_id: vdev id
* @value: value
*
* Return: CDF_STATUS_SUCCESS for success or error code.
*/
CDF_STATUS wma_set_tx_power_scale(uint8_t vdev_id, int value)
{
int ret = CDF_STATUS_SUCCESS;
tp_wma_handle wma_handle =
(tp_wma_handle)cds_get_context(CDF_MODULE_ID_WMA);
if (NULL == wma_handle) {
WMA_LOGE("%s: wma_handle is NULL", __func__);
return CDF_STATUS_E_FAILURE;
}
if (!(wma_handle->interfaces[vdev_id].vdev_up)) {
WMA_LOGE("%s: vdev id %d is not up", __func__, vdev_id);
return CDF_STATUS_E_FAILURE;
}
ret = wmi_unified_vdev_set_param_send(wma_handle->wmi_handle, vdev_id,
WMI_VDEV_PARAM_TXPOWER_SCALE, value);
if (ret != 0)
WMA_LOGE("Set tx power scale failed");
return ret;
}
/**
* wma_set_tx_power_scale_decr_db() - decrease power by DB value
* @vdev_id: vdev id
* @value: value
*
* Return: CDF_STATUS_SUCCESS for success or error code.
*/
CDF_STATUS wma_set_tx_power_scale_decr_db(uint8_t vdev_id, int value)
{
int ret = CDF_STATUS_SUCCESS;
tp_wma_handle wma_handle =
(tp_wma_handle)cds_get_context(CDF_MODULE_ID_WMA);
if (NULL == wma_handle) {
WMA_LOGE("%s: wma_handle is NULL", __func__);
return CDF_STATUS_E_FAILURE;
}
if (!(wma_handle->interfaces[vdev_id].vdev_up)) {
WMA_LOGE("%s: vdev id %d is not up", __func__, vdev_id);
return CDF_STATUS_E_FAILURE;
}
ret = wmi_unified_vdev_set_param_send(wma_handle->wmi_handle, vdev_id,
WMI_VDEV_PARAM_TXPOWER_SCALE_DECR_DB, value);
if (ret != 0)
WMA_LOGE("Decrease tx power value failed");
return ret;
}