wl1271: Add proper WLAN-BT co-ex configuration, and enable co-ex.

Add configuration values for the varous WLAN-BT co-ex configuration parameters,
and finally enable WLAN-BT co-ex. Based on preliminary measurements, it
appears the co-ex feature is not increasing WLAN power consumption, if BT
is not activated.

Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 269 insertions, 61 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_conf.h b/drivers/net/wireless/wl12xx/wl1271_conf.h
index 6f9e75cc5640..7fcfe06b1412 100644
--- a/drivers/net/wireless/wl12xx/wl1271_conf.h
+++ b/drivers/net/wireless/wl12xx/wl1271_conf.h
@@ -65,110 +65,318 @@ enum {
         CONF_HW_RATE_INDEX_MAX     = CONF_HW_RATE_INDEX_54MBPS,
 };
 
-struct conf_sg_settings {
+enum {
+        CONF_SG_DISABLE = 0,
+        CONF_SG_PROTECTIVE,
+        CONF_SG_OPPORTUNISTIC
+};
+
+enum {
         /*
-         * Defines the PER threshold in PPM of the BT voice of which reaching
-         * this value will trigger raising the priority of the BT voice by
-         * the BT IP until next NFS sample interval time as defined in
-         * nfs_sample_interval.
+         * PER threshold in PPM of the BT voice
          *
-         * Unit: PER value in PPM (parts per million)
-         * #Error_packets / #Total_packets
+         * Range: 0 - 10000000
+         */
+        CONF_SG_BT_PER_THRESHOLD = 0,
 
-         * Range: u32
+        /*
+         * Number of consequent RX_ACTIVE activities to override BT voice
+         * frames to ensure WLAN connection
+         *
+         * Range: 0 - 100
+         */
+        CONF_SG_HV3_MAX_OVERRIDE,
+
+        /*
+         * Defines the PER threshold of the BT voice
+         *
+         * Range: 0 - 65000
+         */
+        CONF_SG_BT_NFS_SAMPLE_INTERVAL,
+
+        /*
+         * Defines the load ratio of BT
+         *
+         * Range: 0 - 100 (%)
+         */
+        CONF_SG_BT_LOAD_RATIO,
+
+        /*
+         * Defines whether the SG will force WLAN host to enter/exit PSM
+         *
+         * Range: 1 - SG can force, 0 - host handles PSM
+         */
+        CONF_SG_AUTO_PS_MODE,
+
+        /*
+         * Compensation percentage of probe requests when scan initiated
+         * during BT voice/ACL link.
+         *
+         * Range: 0 - 255 (%)
+         */
+        CONF_SG_AUTO_SCAN_PROBE_REQ,
+
+        /*
+         * Compensation percentage of probe requests when active scan initiated
+         * during BT voice
+         *
+         * Range: 0 - 255 (%)
+         */
+        CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_HV3,
+
+        /*
+         * Defines antenna configuration (single/dual antenna)
+         *
+         * Range: 0 - single antenna, 1 - dual antenna
+         */
+        CONF_SG_ANTENNA_CONFIGURATION,
+
+        /*
+         * The threshold (percent) of max consequtive beacon misses before
+         * increasing priority of beacon reception.
+         *
+         * Range: 0 - 100 (%)
+         */
+        CONF_SG_BEACON_MISS_PERCENT,
+
+        /*
+         * The rate threshold below which receiving a data frame from the AP
+         * will increase the priority of the data frame above BT traffic.
+         *
+         * Range: 0,2, 5(=5.5), 6, 9, 11, 12, 18, 24, 36, 48, 54
+         */
+        CONF_SG_RATE_ADAPT_THRESH,
+
+        /*
+         * Not used currently.
+         *
+         * Range: 0
+         */
+        CONF_SG_RATE_ADAPT_SNR,
+
+        /*
+         * Configure the min and max time BT gains the antenna
+         * in WLAN PSM / BT master basic rate
+         *
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_BR,
+        CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_BR,
+
+        /*
+         * The time after it expires no new WLAN trigger frame is trasmitted
+         * in WLAN PSM / BT master basic rate
+         *
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_BR,
+
+        /*
+         * Configure the min and max time BT gains the antenna
+         * in WLAN PSM / BT slave basic rate
+         *
+         * Range: 0 - 255 (ms)
          */
-        u32 per_threshold;
+        CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_BR,
+        CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_BR,
 
         /*
-         * This value is an absolute time in micro-seconds to limit the
-         * maximum scan duration compensation while in SG
+         * The time after it expires no new WLAN trigger frame is trasmitted
+         * in WLAN PSM / BT slave basic rate
+         *
+         * Range: 0 - 255 (ms)
          */
-        u32 max_scan_compensation_time;
+        CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_BR,
 
-        /* Defines the PER threshold of the BT voice of which reaching this
-         * value will trigger raising the priority of the BT voice until next
-         * NFS sample interval time as defined in sample_interval.
+        /*
+         * Configure the min and max time BT gains the antenna
+         * in WLAN PSM / BT master EDR
          *
-         * Unit: msec
-         * Range: 1-65000
+         * Range: 0 - 255 (ms)
          */
-        u16 nfs_sample_interval;
+        CONF_SG_WLAN_PS_BT_ACL_MASTER_MIN_EDR,
+        CONF_SG_WLAN_PS_BT_ACL_MASTER_MAX_EDR,
 
         /*
-         * Defines the load ratio for the BT.
-         * The WLAN ratio is: 100 - load_ratio
+         * The time after it expires no new WLAN trigger frame is trasmitted
+         * in WLAN PSM / BT master EDR
          *
-         * Unit: Percent
-         * Range: 0-100
+         * Range: 0 - 255 (ms)
          */
-        u8 load_ratio;
+        CONF_SG_WLAN_PS_MAX_BT_ACL_MASTER_EDR,
 
         /*
-         * true - Co-ex is allowed to enter/exit P.S automatically and
-         *        transparently to the host
+         * Configure the min and max time BT gains the antenna
+         * in WLAN PSM / BT slave EDR
          *
-         * false - Co-ex is disallowed to enter/exit P.S and will trigger an
-         *         event to the host to notify for the need to enter/exit P.S
-         *         due to BT change state
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_PS_BT_ACL_SLAVE_MIN_EDR,
+        CONF_SG_WLAN_PS_BT_ACL_SLAVE_MAX_EDR,
+
+        /*
+         * The time after it expires no new WLAN trigger frame is trasmitted
+         * in WLAN PSM / BT slave EDR
          *
+         * Range: 0 - 255 (ms)
          */
-        u8 auto_ps_mode;
+        CONF_SG_WLAN_PS_MAX_BT_ACL_SLAVE_EDR,
 
         /*
-         * This parameter defines the compensation percentage of num of probe
-         * requests in case scan is initiated during BT voice/BT ACL
-         * guaranteed link.
+         * RX guard time before the beginning of a new BT voice frame during
+         * which no new WLAN trigger frame is transmitted.
          *
-         * Unit: Percent
-         * Range: 0-255 (0 - No compensation)
+         * Range: 0 - 100000 (us)
          */
-        u8 probe_req_compensation;
+        CONF_SG_RXT,
 
         /*
-         * This parameter defines the compensation percentage of scan window
-         * size in case scan is initiated during BT voice/BT ACL Guaranteed
-         * link.
+         * TX guard time before the beginning of a new BT voice frame during
+         * which no new WLAN frame is transmitted.
          *
-         * Unit: Percent
-         * Range: 0-255 (0 - No compensation)
+         * Range: 0 - 100000 (us)
          */
-        u8 scan_window_compensation;
+
+        CONF_SG_TXT,
 
         /*
-         * Defines the antenna configuration.
+         * Enable adaptive RXT/TXT algorithm. If disabled, the host values
+         * will be utilized.
          *
-         * Range: 0 - Single Antenna; 1 - Dual Antenna
+         * Range: 0 - disable, 1 - enable
          */
-        u8 antenna_config;
+        CONF_SG_ADAPTIVE_RXT_TXT,
 
         /*
-         * The percent out of the Max consecutive beacon miss roaming trigger
-         * which is the threshold for raising the priority of beacon
-         * reception.
+         * The used WLAN legacy service period during active BT ACL link
          *
-         * Range: 1-100
-         * N = MaxConsecutiveBeaconMiss
-         * P = coexMaxConsecutiveBeaconMissPrecent
-         * Threshold = MIN( N-1, round(N * P / 100))
+         * Range: 0 - 255 (ms)
          */
-        u8 beacon_miss_threshold;
+        CONF_SG_PS_POLL_TIMEOUT,
 
         /*
-         * The RX rate threshold below which rate adaptation is assumed to be
-         * occurring at the AP which will raise priority for ACTIVE_RX and RX
-         * SP.
+         * The used WLAN UPSD service period during active BT ACL link
          *
-         * Range: HW_BIT_RATE_*
+         * Range: 0 - 255 (ms)
          */
-        u32 rate_adaptation_threshold;
+        CONF_SG_UPSD_TIMEOUT,
 
         /*
-         * The SNR above which the RX rate threshold indicating AP rate
-         * adaptation is valid
+         * Configure the min and max time BT gains the antenna
+         * in WLAN Active / BT master EDR
          *
-         * Range: -128 - 127
+         * Range: 0 - 255 (ms)
          */
-        s8 rate_adaptation_snr;
+        CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MIN_EDR,
+        CONF_SG_WLAN_ACTIVE_BT_ACL_MASTER_MAX_EDR,
+
+        /*
+         * The maximum time WLAN can gain the antenna for
+         * in WLAN Active / BT master EDR
+         *
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_MASTER_EDR,
+
+        /*
+         * Configure the min and max time BT gains the antenna
+         * in WLAN Active / BT slave EDR
+         *
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MIN_EDR,
+        CONF_SG_WLAN_ACTIVE_BT_ACL_SLAVE_MAX_EDR,
+
+        /*
+         * The maximum time WLAN can gain the antenna for
+         * in WLAN Active / BT slave EDR
+         *
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_SLAVE_EDR,
+
+        /*
+         * Configure the min and max time BT gains the antenna
+         * in WLAN Active / BT basic rate
+         *
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_ACTIVE_BT_ACL_MIN_BR,
+        CONF_SG_WLAN_ACTIVE_BT_ACL_MAX_BR,
+
+        /*
+         * The maximum time WLAN can gain the antenna for
+         * in WLAN Active / BT basic rate
+         *
+         * Range: 0 - 255 (ms)
+         */
+        CONF_SG_WLAN_ACTIVE_MAX_BT_ACL_BR,
+
+        /*
+         * Compensation percentage of WLAN passive scan window if initiated
+         * during BT voice
+         *
+         * Range: 0 - 1000 (%)
+         */
+        CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_HV3,
+
+        /*
+         * Compensation percentage of WLAN passive scan window if initiated
+         * during BT A2DP
+         *
+         * Range: 0 - 1000 (%)
+         */
+        CONF_SG_PASSIVE_SCAN_DURATION_FACTOR_A2DP,
+
+        /*
+         * Fixed time ensured for BT traffic to gain the antenna during WLAN
+         * passive scan.
+         *
+         * Range: 0 - 1000 ms
+         */
+        CONF_SG_PASSIVE_SCAN_A2DP_BT_TIME,
+
+        /*
+         * Fixed time ensured for WLAN traffic to gain the antenna during WLAN
+         * passive scan.
+         *
+         * Range: 0 - 1000 ms
+         */
+        CONF_SG_PASSIVE_SCAN_A2DP_WLAN_TIME,
+
+        /*
+         * Number of consequent BT voice frames not interrupted by WLAN
+         *
+         * Range: 0 - 100
+         */
+        CONF_SG_HV3_MAX_SERVED,
+
+        /*
+         * Protection time of the DHCP procedure.
+         *
+         * Range: 0 - 100000 (ms)
+         */
+        CONF_SG_DHCP_TIME,
+
+        /*
+         * Compensation percentage of WLAN active scan window if initiated
+         * during BT A2DP
+         *
+         * Range: 0 - 1000 (%)
+         */
+        CONF_SG_ACTIVE_SCAN_DURATION_FACTOR_A2DP,
+        CONF_SG_TEMP_PARAM_1,
+        CONF_SG_TEMP_PARAM_2,
+        CONF_SG_TEMP_PARAM_3,
+        CONF_SG_TEMP_PARAM_4,
+        CONF_SG_TEMP_PARAM_5,
+        CONF_SG_PARAMS_MAX,
+        CONF_SG_PARAMS_ALL = 0xff
+};
+
+struct conf_sg_settings {
+        __le32 params[CONF_SG_PARAMS_MAX];
+        u8 state;
 };
 
 enum conf_rx_queue_type {