From ac46ba4384d2c44c56702d0da591696045fba682 Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Mon, 19 Nov 2012 14:24:46 +0530 Subject: [PATCH] ath9k: Fix BTCOEX debugfs file usage The debugfs file for dumping btcoex parameters unconditionally assumes a MCI-based device. This will not work for older btcoex chips. Fix this by branching out the routine into separate functions. Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ath9k.h | 11 ++++++-- drivers/net/wireless/ath/ath9k/debug.c | 8 +++++- drivers/net/wireless/ath/ath9k/gpio.c | 51 +++++++++++++++++++++++----------- 3 files changed, 50 insertions(+), 20 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h index 4e125d8..9a93d2b 100644 --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -461,6 +461,12 @@ void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type); /* BTCOEX */ /**********/ +#define ATH_DUMP_BTCOEX(_s, _val) \ + do { \ + len += snprintf(buf + len, size - len, \ + "%20s : %10d\n", _s, (_val)); \ + } while (0) + enum bt_op_flags { BT_OP_PRIORITY_DETECTED, BT_OP_SCAN, @@ -494,7 +500,7 @@ void ath9k_btcoex_timer_pause(struct ath_softc *sc); void ath9k_btcoex_handle_interrupt(struct ath_softc *sc, u32 status); u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, u32 max_4ms_framelen); void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc); -int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 len, u32 size); +int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size); #else static inline int ath9k_init_btcoex(struct ath_softc *sc) { @@ -521,8 +527,7 @@ static inline u16 ath9k_btcoex_aggr_limit(struct ath_softc *sc, static inline void ath9k_btcoex_stop_gen_timer(struct ath_softc *sc) { } -static inline int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, - u32 len, u32 size) +static inline int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size) { return 0; } diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c index a8be94b..585aee4 100644 --- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -1599,8 +1599,14 @@ static ssize_t read_file_btcoex(struct file *file, char __user *user_buf, if (buf == NULL) return -ENOMEM; - len = ath9k_dump_btcoex(sc, buf, len, size); + if (!sc->sc_ah->common.btcoex_enabled) { + len = snprintf(buf, size, "%s\n", + "BTCOEX is disabled"); + goto exit; + } + len = ath9k_dump_btcoex(sc, buf, size); +exit: retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c index a8ea57b..4236df8 100644 --- a/drivers/net/wireless/ath/ath9k/gpio.c +++ b/drivers/net/wireless/ath/ath9k/gpio.c @@ -494,35 +494,31 @@ int ath9k_init_btcoex(struct ath_softc *sc) return 0; } -int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 len, u32 size) +static int ath9k_dump_mci_btcoex(struct ath_softc *sc, u8 *buf, u32 size) { -#define ATH_DUMP_BTCOEX(_s, _val) \ - do { \ - len += snprintf(buf + len, size - len, \ - "%20s : %10d\n", _s, (_val)); \ - } while (0) - struct ath_btcoex *btcoex = &sc->btcoex; struct ath_mci_profile *mci = &btcoex->mci; struct ath_hw *ah = sc->sc_ah; struct ath_btcoex_hw *btcoex_hw = &ah->btcoex_hw; + u32 len = 0; int i; ATH_DUMP_BTCOEX("Total BT profiles", NUM_PROF(mci)); - ATH_DUMP_BTCOEX("Number of MGMT", mci->num_mgmt); - ATH_DUMP_BTCOEX("Number of SCO", mci->num_sco); - ATH_DUMP_BTCOEX("Number of A2DP", mci->num_a2dp); - ATH_DUMP_BTCOEX("Number of HID", mci->num_hid); - ATH_DUMP_BTCOEX("Number of PAN", mci->num_pan); - ATH_DUMP_BTCOEX("Number of ACL", mci->num_other_acl); - ATH_DUMP_BTCOEX("Number of BDR", mci->num_bdr); + ATH_DUMP_BTCOEX("MGMT", mci->num_mgmt); + ATH_DUMP_BTCOEX("SCO", mci->num_sco); + ATH_DUMP_BTCOEX("A2DP", mci->num_a2dp); + ATH_DUMP_BTCOEX("HID", mci->num_hid); + ATH_DUMP_BTCOEX("PAN", mci->num_pan); + ATH_DUMP_BTCOEX("ACL", mci->num_other_acl); + ATH_DUMP_BTCOEX("BDR", mci->num_bdr); ATH_DUMP_BTCOEX("Aggr. Limit", mci->aggr_limit); ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type); ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period); ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle); ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time); ATH_DUMP_BTCOEX("Concurrent Tx", btcoex_hw->mci.concur_tx); - ATH_DUMP_BTCOEX("Concur RSSI count", btcoex->rssi_count); + ATH_DUMP_BTCOEX("Concurrent RSSI cnt", btcoex->rssi_count); + len += snprintf(buf + len, size - len, "BT Weights: "); for (i = 0; i < AR9300_NUM_BT_WEIGHTS; i++) len += snprintf(buf + len, size - len, "%08x ", @@ -537,9 +533,32 @@ int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 len, u32 size) for (i = 0; i < ATH_BTCOEX_STOMP_MAX; i++) len += snprintf(buf + len, size - len, "%08x ", btcoex_hw->tx_prio[i]); + len += snprintf(buf + len, size - len, "\n"); -#undef ATH_DUMP_BTCOEX return len; } + +static int ath9k_dump_legacy_btcoex(struct ath_softc *sc, u8 *buf, u32 size) +{ + + struct ath_btcoex *btcoex = &sc->btcoex; + u32 len = 0; + + ATH_DUMP_BTCOEX("Stomp Type", btcoex->bt_stomp_type); + ATH_DUMP_BTCOEX("BTCoex Period (msec)", btcoex->btcoex_period); + ATH_DUMP_BTCOEX("Duty Cycle", btcoex->duty_cycle); + ATH_DUMP_BTCOEX("BT Wait time", btcoex->bt_wait_time); + + return len; +} + +int ath9k_dump_btcoex(struct ath_softc *sc, u8 *buf, u32 size) +{ + if (ath9k_hw_mci_is_enabled(sc->sc_ah)) + return ath9k_dump_mci_btcoex(sc, buf, size); + else + return ath9k_dump_legacy_btcoex(sc, buf, size); +} + #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */ -- 2.7.4