/*
 * Copyright (c) 2009-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef BTCOEX_H
#define BTCOEX_H

#include "hw.h"

#define ATH_WLANACTIVE_GPIO_9280     5
#define ATH_BTACTIVE_GPIO_9280       6
#define ATH_BTPRIORITY_GPIO_9285     7

#define ATH_WLANACTIVE_GPIO_9300     5
#define ATH_BTACTIVE_GPIO_9300       4
#define ATH_BTPRIORITY_GPIO_9300     8

#define ATH_BTCOEX_DEF_BT_PERIOD  45
#define ATH_BTCOEX_DEF_DUTY_CYCLE 55
#define ATH_BTCOEX_BTSCAN_DUTY_CYCLE 90
#define ATH_BTCOEX_BMISS_THRESH   50

#define ATH_BT_PRIORITY_TIME_THRESHOLD 1000 /* ms */
#define ATH_BT_CNT_THRESHOLD           3
#define ATH_BT_CNT_SCAN_THRESHOLD      15

#define ATH_BTCOEX_RX_WAIT_TIME       100
#define ATH_BTCOEX_STOMP_FTP_THRESH   5

#define ATH_BTCOEX_HT20_MAX_TXPOWER   0x14
#define ATH_BTCOEX_HT40_MAX_TXPOWER   0x10

#define AR9300_NUM_BT_WEIGHTS   4
#define AR9300_NUM_WLAN_WEIGHTS 4

#define ATH_AIC_MAX_BT_CHANNEL  79

/* Defines the BT AR_BT_COEX_WGHT used */
enum ath_stomp_type {
        ATH_BTCOEX_STOMP_ALL,
        ATH_BTCOEX_STOMP_LOW,
        ATH_BTCOEX_STOMP_NONE,
        ATH_BTCOEX_STOMP_LOW_FTP,
        ATH_BTCOEX_STOMP_AUDIO,
        ATH_BTCOEX_STOMP_MAX
};

enum ath_btcoex_scheme {
        ATH_BTCOEX_CFG_NONE,
        ATH_BTCOEX_CFG_2WIRE,
        ATH_BTCOEX_CFG_3WIRE,
        ATH_BTCOEX_CFG_MCI,
};

struct ath9k_hw_mci {
        u32 raw_intr;
        u32 rx_msg_intr;
        u32 cont_status;
        u32 gpm_addr;
        u32 gpm_len;
        u32 gpm_idx;
        u32 sched_addr;
        u32 wlan_channels[4];
        u32 wlan_cal_seq;
        u32 wlan_cal_done;
        u32 config;
        u8 *gpm_buf;
        bool ready;
        bool update_2g5g;
        bool is_2g;
        bool query_bt;
        bool unhalt_bt_gpm; /* need send UNHALT */
        bool halted_bt_gpm; /* HALT sent */
        bool need_flush_btinfo;
        bool bt_version_known;
        bool wlan_channels_update;
        u8 wlan_ver_major;
        u8 wlan_ver_minor;
        u8 bt_ver_major;
        u8 bt_ver_minor;
        u8 bt_state;
        u8 stomp_ftp;
        bool concur_tx;
        u32 last_recovery;
};

struct ath9k_hw_aic {
        bool aic_enabled;
        u8 aic_cal_state;
        u8 aic_caled_chan;
        u32 aic_sram[ATH_AIC_MAX_BT_CHANNEL];
        u32 aic_cal_start_time;
};

struct ath_btcoex_hw {
        enum ath_btcoex_scheme scheme;
        struct ath9k_hw_mci mci;
        struct ath9k_hw_aic aic;
        bool enabled;
        u8 wlanactive_gpio;
        u8 btactive_gpio;
        u8 btpriority_gpio;
        u32 bt_coex_mode;       /* Register setting for AR_BT_COEX_MODE */
        u32 bt_coex_weights;    /* Register setting for AR_BT_COEX_WEIGHT */
        u32 bt_coex_mode2;      /* Register setting for AR_BT_COEX_MODE2 */
        u32 bt_coex_mode3;      /* Register setting for AR_BT_COEX_MODE3 */
        u32 bt_weight[AR9300_NUM_BT_WEIGHTS];
        u32 wlan_weight[AR9300_NUM_WLAN_WEIGHTS];
        u8 tx_prio[ATH_BTCOEX_STOMP_MAX];
};

void ath9k_hw_btcoex_init_scheme(struct ath_hw *ah);
void ath9k_hw_btcoex_init_2wire(struct ath_hw *ah);
void ath9k_hw_btcoex_init_3wire(struct ath_hw *ah);
void ath9k_hw_btcoex_deinit(struct ath_hw *ah);
void ath9k_hw_btcoex_init_mci(struct ath_hw *ah);
void ath9k_hw_init_btcoex_hw(struct ath_hw *ah, int qnum);
void ath9k_hw_btcoex_set_weight(struct ath_hw *ah,
                                u32 bt_weight,
                                u32 wlan_weight,
                                enum ath_stomp_type stomp_type);
void ath9k_hw_btcoex_disable(struct ath_hw *ah);
void ath9k_hw_btcoex_bt_stomp(struct ath_hw *ah,
                              enum ath_stomp_type stomp_type);
void ath9k_hw_btcoex_set_concur_txprio(struct ath_hw *ah, u8 *stomp_txprio);

#endif