/*
* Initial AR9462 / (WB222) bluetooth coexistence settings,
* just for experimentation.
*
* Return 0 for OK; errno for error.
*/
static int
ath_btcoex_cfg_wb222(struct ath_softc *sc)
{
HAL_BT_COEX_INFO btinfo;
HAL_BT_COEX_CONFIG btconfig;
struct ath_hal *ah = sc->sc_ah;
if (! ath_hal_btcoex_supported(ah))
return (EINVAL);
bzero(&btinfo, sizeof(btinfo));
bzero(&btconfig, sizeof(btconfig));
device_printf(sc->sc_dev, "Enabling WB222 BTCOEX\n");
btinfo.bt_module = HAL_BT_MODULE_JANUS; /* XXX not used? */
btinfo.bt_coex_config = HAL_BT_COEX_CFG_MCI;
/*
* MCI uses a completely different interface to speak
* to the bluetooth module - it's a command based
* thing over a serial line, rather than
* state pins to/from the bluetooth module.
*
* So, the GPIO configuration, polarity, etc
* doesn't matter on MCI devices; it's just
* completely ignored by the HAL.
*/
btinfo.bt_gpio_bt_active = 4;
btinfo.bt_gpio_bt_priority = 8;
btinfo.bt_gpio_wlan_active = 5;
btinfo.bt_active_polarity = 1; /* XXX not used */
btinfo.bt_single_ant = 0; /* 2 antenna on WB222 */
btinfo.bt_isolation = 0; /* in dB, not used */
ath_hal_btcoex_set_info(ah, &btinfo);
btconfig.bt_time_extend = 0;
btconfig.bt_txstate_extend = 1; /* true */
btconfig.bt_txframe_extend = 1; /* true */
btconfig.bt_mode = HAL_BT_COEX_MODE_SLOTTED;
btconfig.bt_quiet_collision = 1; /* true */
btconfig.bt_rxclear_polarity = 1; /* true */
btconfig.bt_priority_time = 2;
btconfig.bt_first_slot_time = 5;
btconfig.bt_hold_rxclear = 1; /* true */
ath_hal_btcoex_set_config(ah, &btconfig);
/*
* Enable antenna diversity.
*/
ath_hal_btcoex_set_parameter(ah, HAL_BT_COEX_ANTENNA_DIVERSITY, 1);
return (0);
}
/*
* Initial AR9485 / (WB225) bluetooth coexistence settings,
* just for experimentation.
*
* Return 0 for OK; errno for error.
*/
static int
ath_btcoex_cfg_wb225(struct ath_softc *sc)
{
HAL_BT_COEX_INFO btinfo;
HAL_BT_COEX_CONFIG btconfig;
struct ath_hal *ah = sc->sc_ah;
if (! ath_hal_btcoex_supported(ah))
return (EINVAL);
bzero(&btinfo, sizeof(btinfo));
bzero(&btconfig, sizeof(btconfig));
device_printf(sc->sc_dev, "Enabling WB225 BTCOEX\n");
btinfo.bt_module = HAL_BT_MODULE_JANUS; /* XXX not used? */
btinfo.bt_coex_config = HAL_BT_COEX_CFG_3WIRE;
/*
* These are the three GPIO pins hooked up between the AR9485 and
* the bluetooth module.
*/
btinfo.bt_gpio_bt_active = 4;
btinfo.bt_gpio_bt_priority = 8;
btinfo.bt_gpio_wlan_active = 5;
btinfo.bt_active_polarity = 1; /* XXX not used */
btinfo.bt_single_ant = 1; /* 1 antenna on ar9285 ? */
btinfo.bt_isolation = 0; /* in dB, not used */
ath_hal_btcoex_set_info(ah, &btinfo);
btconfig.bt_time_extend = 0;
btconfig.bt_txstate_extend = 1; /* true */
btconfig.bt_txframe_extend = 1; /* true */
btconfig.bt_mode = HAL_BT_COEX_MODE_SLOTTED;
btconfig.bt_quiet_collision = 1; /* true */
btconfig.bt_rxclear_polarity = 1; /* true */
btconfig.bt_priority_time = 2;
btconfig.bt_first_slot_time = 5;
btconfig.bt_hold_rxclear = 1; /* true */
ath_hal_btcoex_set_config(ah, &btconfig);
/*
* Enable antenna diversity.
*/
ath_hal_btcoex_set_parameter(ah, HAL_BT_COEX_ANTENNA_DIVERSITY, 1);
return (0);
}
/*
* Attach btcoex to the given interface
*/
int
ath_btcoex_attach(struct ath_softc *sc)
{
int ret;
struct ath_hal *ah = sc->sc_ah;
const char *profname;
/*
* No chipset bluetooth coexistence? Then do nothing.
*/
if (! ath_hal_btcoex_supported(ah))
return (0);
/*
* Look at the hints to determine which bluetooth
* profile to configure.
*/
ret = resource_string_value(device_get_name(sc->sc_dev),
device_get_unit(sc->sc_dev),
"btcoex_profile",
&profname);
if (ret != 0) {
/* nothing to do */
return (0);
}
if (strncmp(profname, "wb195", 5) == 0) {
ret = ath_btcoex_cfg_wb195(sc);
} else if (strncmp(profname, "wb222", 5) == 0) {
ret = ath_btcoex_cfg_wb222(sc);
} else if (strncmp(profname, "wb225", 5) == 0) {
ret = ath_btcoex_cfg_wb225(sc);
} else {
return (0);
}
/*
* Propagate up failure from the actual attach phase.
*/
if (ret != 0)
return (ret);
return (0);
}