diff options
Diffstat (limited to 'drivers/staging/cw1200/sta.c')
| -rw-r--r-- | drivers/staging/cw1200/sta.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/staging/cw1200/sta.c b/drivers/staging/cw1200/sta.c index 82c410c6c88..4aa320d76d9 100644 --- a/drivers/staging/cw1200/sta.c +++ b/drivers/staging/cw1200/sta.c @@ -945,6 +945,66 @@ void cw1200_tx_failure_work(struct work_struct *work) /* ******************************************************************** */ /* Internal API */ + + +/* +* This function is called to Parse the SDD file + *to extract listen_interval and PTA related information +*/ +static int cw1200_parse_SDD_file(struct cw1200_common *priv) +{ + u8 *sdd_data = (u8 *)priv->sdd->data; + struct cw1200_sdd { + u8 id ; + u8 length ; + u8 data[] ; + } *pElement; + int parsedLength = 0; + #define SDD_PTA_CFG_ELT_ID 0xEB + #define FIELD_OFFSET(type, field) ((u8 *)&((type*)0)->field - (u8 *)0) + + priv->is_BT_Present = false; + + pElement = (struct cw1200_sdd *)sdd_data; + + pElement = (struct cw1200_sdd *)((u8*)pElement + + FIELD_OFFSET(struct cw1200_sdd, data) + pElement->length); + + parsedLength += (FIELD_OFFSET(struct cw1200_sdd, data) + + pElement->length); + + while (parsedLength <= priv->sdd->size) { + switch (pElement->id) { + case SDD_PTA_CFG_ELT_ID: + { + priv->conf_listen_interval = + (*((u16 *)pElement->data+1) >> 7) & 0x1F; + priv->is_BT_Present = true; + sta_printk(KERN_DEBUG "PTA element found.\n"); + sta_printk(KERN_DEBUG "Listen Interval %d\n", + priv->conf_listen_interval); + } + break; + + default: + break; + } + + pElement = (struct cw1200_sdd *) + ((u8 *)pElement + FIELD_OFFSET(struct cw1200_sdd, data) + + pElement->length); + parsedLength += + (FIELD_OFFSET(struct cw1200_sdd, data) + pElement->length); + } + + if (priv->is_BT_Present == false) { + sta_printk(KERN_DEBUG "PTA element NOT found.\n"); + priv->conf_listen_interval = 0; + } + return 0; +} + + int cw1200_setup_mac(struct cw1200_common *priv) { /* TBD: Do you know how to assing MAC address without @@ -1002,6 +1062,8 @@ int cw1200_setup_mac(struct cw1200_common *priv) cfg.dpdData = priv->sdd->data; cfg.dpdData_size = priv->sdd->size; ret = WARN_ON(wsm_configuration(priv, &cfg)); + /* Parse SDD file for PTA element */ + cw1200_parse_SDD_file(priv); } if (ret) return ret; @@ -1099,6 +1161,19 @@ void cw1200_join_work(struct work_struct *work) .basicRateSet = 7, }; + /* BT Coex related changes */ + if (priv->is_BT_Present) { + if (((priv->conf_listen_interval * 100) % + bss->beacon_interval) == 0) + priv->listen_interval = + ((priv->conf_listen_interval * 100) / + bss->beacon_interval); + else + priv->listen_interval = + ((priv->conf_listen_interval * 100) / + bss->beacon_interval + 1); + } + if (tim && tim->dtim_period > 1) { join.dtimPeriod = tim->dtim_period; priv->join_dtim_period = tim->dtim_period; |