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libertas: Improvements on automatic tx power control via SIOCSIWTXPOW.

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iwconfig txpower can now be used to set tx power to fixed or auto. If set to
auto the default firmware settings are used.

The command CMD_802_11_PA_CFG is only sent to older firmware, as Dan Williams
noted the command was no longer supported in firmware V9+.

Signed-off-by: Anna Neal <anna@cozybit.com>
Signed-off-by: Javier Cardona <javier@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Anna Neal 2008-09-11 11:17:25 -07:00 committed by John W. Linville
parent aee14ceb52
commit 0112c9e9e8
6 changed files with 128 additions and 7 deletions
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64
drivers/net/wireless/libertas/cmd.c
View File

@ -1971,6 +1971,70 @@ void lbs_ps_confirm_sleep(struct lbs_private *priv)
}
/**
* @brief Configures the transmission power control functionality.
*
* @param priv A pointer to struct lbs_private structure
* @param enable Transmission power control enable
* @param p0 Power level when link quality is good (dBm).
* @param p1 Power level when link quality is fair (dBm).
* @param p2 Power level when link quality is poor (dBm).
* @param usesnr Use Signal to Noise Ratio in TPC
*
* @return 0 on success
*/
int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
int8_t p2, int usesnr)
{
struct cmd_ds_802_11_tpc_cfg cmd;
int ret;
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.enable = !!enable;
cmd.usesnr = !!enable;
cmd.P0 = p0;
cmd.P1 = p1;
cmd.P2 = p2;
ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
return ret;
}
/**
* @brief Configures the power adaptation settings.
*
* @param priv A pointer to struct lbs_private structure
* @param enable Power adaptation enable
* @param p0 Power level for 1, 2, 5.5 and 11 Mbps (dBm).
* @param p1 Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
* @param p2 Power level for 48 and 54 Mbps (dBm).
*
* @return 0 on Success
*/
int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
int8_t p1, int8_t p2)
{
struct cmd_ds_802_11_pa_cfg cmd;
int ret;
memset(&cmd, 0, sizeof(cmd));
cmd.hdr.size = cpu_to_le16(sizeof(cmd));
cmd.action = cpu_to_le16(CMD_ACT_SET);
cmd.enable = !!enable;
cmd.P0 = p0;
cmd.P1 = p1;
cmd.P2 = p2;
ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
return ret;
}
static struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),

6
drivers/net/wireless/libertas/cmd.h
View File

@ -26,6 +26,12 @@ int __lbs_cmd(struct lbs_private *priv, uint16_t command,
int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
unsigned long callback_arg);
int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
int8_t p1, int8_t p2);
int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
int8_t p2, int usesnr);
int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
struct cmd_header *resp);

9
drivers/net/wireless/libertas/defs.h
View File

@ -189,6 +189,15 @@ static inline void lbs_deb_hex(unsigned int grp, const char *prompt, u8 *buf, in
#define MRVDRV_CMD_UPLD_RDY 0x0008
#define MRVDRV_CARDEVENT 0x0010
/* Automatic TX control default levels */
#define POW_ADAPT_DEFAULT_P0 13
#define POW_ADAPT_DEFAULT_P1 15
#define POW_ADAPT_DEFAULT_P2 18
#define TPC_DEFAULT_P0 5
#define TPC_DEFAULT_P1 10
#define TPC_DEFAULT_P2 13
/** TxPD status */
/* Station firmware use TxPD status field to report final Tx transmit

1
drivers/net/wireless/libertas/host.h
View File

@ -83,6 +83,7 @@
#define CMD_802_11_INACTIVITY_TIMEOUT 0x0067
#define CMD_802_11_SLEEP_PERIOD 0x0068
#define CMD_802_11_TPC_CFG 0x0072
#define CMD_802_11_PA_CFG 0x0073
#define CMD_802_11_FW_WAKE_METHOD 0x0074
#define CMD_802_11_SUBSCRIBE_EVENT 0x0075
#define CMD_802_11_RATE_ADAPT_RATESET 0x0076

24
drivers/net/wireless/libertas/hostcmd.h
View File

@ -607,14 +607,28 @@ struct cmd_ds_802_11_eeprom_access {
} __attribute__ ((packed));
struct cmd_ds_802_11_tpc_cfg {
struct cmd_header hdr;
__le16 action;
u8 enable;
s8 P0;
s8 P1;
s8 P2;
u8 usesnr;
uint8_t enable;
int8_t P0;
int8_t P1;
int8_t P2;
uint8_t usesnr;
} __attribute__ ((packed));
struct cmd_ds_802_11_pa_cfg {
struct cmd_header hdr;
__le16 action;
uint8_t enable;
int8_t P0;
int8_t P1;
int8_t P2;
} __attribute__ ((packed));
struct cmd_ds_802_11_led_ctrl {
__le16 action;
__le16 numled;

31
drivers/net/wireless/libertas/wext.c
View File

@ -1820,7 +1820,21 @@ static int lbs_set_txpow(struct net_device *dev, struct iw_request_info *info,
}
if (vwrq->fixed == 0) {
/* Auto power control */
/* User requests automatic tx power control, however there are
* many auto tx settings. For now use firmware defaults until
* we come up with a good way to expose these to the user. */
if (priv->fwrelease < 0x09000000) {
ret = lbs_set_power_adapt_cfg(priv, 1,
POW_ADAPT_DEFAULT_P0,
POW_ADAPT_DEFAULT_P1,
POW_ADAPT_DEFAULT_P2);
if (ret)
goto out;
}
ret = lbs_set_tpc_cfg(priv, 0, TPC_DEFAULT_P0, TPC_DEFAULT_P1,
TPC_DEFAULT_P2, 1);
if (ret)
goto out;
dbm = priv->txpower_max;
} else {
/* Userspace check in iwrange if it should use dBm or mW,
@ -1830,7 +1844,8 @@ static int lbs_set_txpow(struct net_device *dev, struct iw_request_info *info,
goto out;
}
/* Validate requested power level against firmware allowed levels */
/* Validate requested power level against firmware allowed
* levels */
if (priv->txpower_min && (dbm < priv->txpower_min)) {
ret = -EINVAL;
goto out;
@ -1840,6 +1855,18 @@ static int lbs_set_txpow(struct net_device *dev, struct iw_request_info *info,
ret = -EINVAL;
goto out;
}
if (priv->fwrelease < 0x09000000) {
ret = lbs_set_power_adapt_cfg(priv, 0,
POW_ADAPT_DEFAULT_P0,
POW_ADAPT_DEFAULT_P1,
POW_ADAPT_DEFAULT_P2);
if (ret)
goto out;
}
ret = lbs_set_tpc_cfg(priv, 0, TPC_DEFAULT_P0, TPC_DEFAULT_P1,
TPC_DEFAULT_P2, 1);
if (ret)
goto out;
}
/* If the radio was off, turn it on */