From b405086ba47678a5b8f6e7cd835a3d27ebb6f744 Mon Sep 17 00:00:00 2001 From: Nick Kossifidis Date: Tue, 23 Nov 2010 21:04:43 +0200 Subject: [PATCH] ath5k: Increase PHY settling parameters for turo mode * On turbo mode increase PHY settling times, note that we only increase switch settling time on AR5212 as indicated by initvals. * A few cleanups: Move frame control settings for AR5210 from reset_tx_queue to tweak_initvals and remove phy_scal settings from tweak_initvals (we tweak them alread on set_sleep_clock). Signed-off-by: Nick Kossifidis Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/ath5k.h | 14 +++++-- drivers/net/wireless/ath/ath5k/qcu.c | 13 ------- drivers/net/wireless/ath/ath5k/reg.h | 2 + drivers/net/wireless/ath/ath5k/reset.c | 52 +++++++++++++++++++------- 4 files changed, 52 insertions(+), 29 deletions(-) diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h index c9535447a8a..005cad02517 100644 --- a/drivers/net/wireless/ath/ath5k/ath5k.h +++ b/drivers/net/wireless/ath/ath5k/ath5k.h @@ -259,15 +259,23 @@ #define AR5K_INIT_TX_LAT_BG 384 /* Tx latency for 40MHz (turbo) operation (min ?) */ #define AR5K_INIT_TX_LAT_MIN 32 +/* Default Tx/Rx latencies (same for 5211)*/ +#define AR5K_INIT_TX_LATENCY_5210 54 +#define AR5K_INIT_RX_LATENCY_5210 29 /* Tx frame to Tx data start delay */ #define AR5K_INIT_TXF2TXD_START_DEFAULT 14 #define AR5K_INIT_TXF2TXD_START_DELAY_10MHZ 12 #define AR5K_INIT_TXF2TXD_START_DELAY_5MHZ 13 -/* Default Tx/Rx latencies (same for 5211)*/ -#define AR5K_INIT_TX_LATENCY_5210 54 -#define AR5K_INIT_RX_LATENCY_5210 29 +/* We need to increase PHY switch and agc settling time + * on turbo mode */ +#define AR5K_SWITCH_SETTLING 5760 +#define AR5K_SWITCH_SETTLING_TURBO 7168 + +#define AR5K_AGC_SETTLING 28 +/* 38 on 5210 but shouldn't matter */ +#define AR5K_AGC_SETTLING_TURBO 37 /* GENERIC CHIPSET DEFINITIONS */ diff --git a/drivers/net/wireless/ath/ath5k/qcu.c b/drivers/net/wireless/ath/ath5k/qcu.c index f89bc9403f8..00c490833ba 100644 --- a/drivers/net/wireless/ath/ath5k/qcu.c +++ b/drivers/net/wireless/ath/ath5k/qcu.c @@ -271,19 +271,6 @@ int ath5k_hw_reset_tx_queue(struct ath5k_hw *ah, unsigned int queue) ath5k_hw_reg_write(ah, (ah->ah_bwmode == AR5K_BWMODE_40MHZ) ? AR5K_INIT_PROTO_TIME_CNTRL_TURBO : AR5K_INIT_PROTO_TIME_CNTRL, AR5K_IFS1); - /* Set AR5K_PHY_SETTLING */ - ath5k_hw_reg_write(ah, (ah->ah_bwmode == AR5K_BWMODE_40MHZ) ? - (ath5k_hw_reg_read(ah, AR5K_PHY_SETTLING) & ~0x7F) - | 0x38 : - (ath5k_hw_reg_read(ah, AR5K_PHY_SETTLING) & ~0x7F) - | 0x1C, - AR5K_PHY_SETTLING); - /* Set Frame Control Register */ - ath5k_hw_reg_write(ah, (ah->ah_bwmode == AR5K_BWMODE_40MHZ) ? - (AR5K_PHY_FRAME_CTL_INI | AR5K_PHY_TURBO_MODE | - AR5K_PHY_TURBO_SHORT | 0x2020) : - (AR5K_PHY_FRAME_CTL_INI | 0x1020), - AR5K_PHY_FRAME_CTL_5210); } /* diff --git a/drivers/net/wireless/ath/ath5k/reg.h b/drivers/net/wireless/ath/ath5k/reg.h index 4d610617af3..dc213bb121e 100644 --- a/drivers/net/wireless/ath/ath5k/reg.h +++ b/drivers/net/wireless/ath/ath5k/reg.h @@ -2245,6 +2245,8 @@ #define AR5K_PHY_FRAME_CTL (ah->ah_version == AR5K_AR5210 ? \ AR5K_PHY_FRAME_CTL_5210 : AR5K_PHY_FRAME_CTL_5211) /*---[5111+]---*/ +#define AR5K_PHY_FRAME_CTL_WIN_LEN 0x00000003 /* Force window length (?) */ +#define AR5K_PHY_FRAME_CTL_WIN_LEN_S 0 #define AR5K_PHY_FRAME_CTL_TX_CLIP 0x00000038 /* Mask for tx clip (?) */ #define AR5K_PHY_FRAME_CTL_TX_CLIP_S 3 #define AR5K_PHY_FRAME_CTL_PREP_CHINFO 0x00010000 /* Prepend chan info */ diff --git a/drivers/net/wireless/ath/ath5k/reset.c b/drivers/net/wireless/ath/ath5k/reset.c index c9e5bad7cff..c871d40b1ad 100644 --- a/drivers/net/wireless/ath/ath5k/reset.c +++ b/drivers/net/wireless/ath/ath5k/reset.c @@ -688,19 +688,6 @@ static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah, AR5K_REG_DISABLE_BITS(ah, AR5K_TXCFG, AR5K_TXCFG_DCU_DBL_BUF_DIS); - /* Set DAC/ADC delays */ - if (ah->ah_version == AR5K_AR5212) { - u32 scal; - struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom; - if (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4)) - scal = AR5K_PHY_SCAL_32MHZ_2417; - else if (ee->ee_is_hb63) - scal = AR5K_PHY_SCAL_32MHZ_HB63; - else - scal = AR5K_PHY_SCAL_32MHZ; - ath5k_hw_reg_write(ah, scal, AR5K_PHY_SCAL); - } - /* Set fast ADC */ if ((ah->ah_radio == AR5K_RF5413) || (ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4))) { @@ -740,6 +727,45 @@ static void ath5k_hw_tweak_initval_settings(struct ath5k_hw *ah, AR5K_REG_ENABLE_BITS(ah, AR5K_DIAG_SW_5211, AR5K_DIAG_SW_ECO_ENABLE); } + + if (ah->ah_bwmode) { + /* Increase PHY switch and AGC settling time + * on turbo mode (ath5k_hw_commit_eeprom_settings + * will override settling time if available) */ + if (ah->ah_bwmode == AR5K_BWMODE_40MHZ) { + + AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING, + AR5K_PHY_SETTLING_AGC, + AR5K_AGC_SETTLING_TURBO); + + /* XXX: Initvals indicate we only increase + * switch time on AR5212, 5211 and 5210 + * only change agc time (bug?) */ + if (ah->ah_version == AR5K_AR5212) + AR5K_REG_WRITE_BITS(ah, AR5K_PHY_SETTLING, + AR5K_PHY_SETTLING_SWITCH, + AR5K_SWITCH_SETTLING_TURBO); + + if (ah->ah_version == AR5K_AR5210) { + /* Set Frame Control Register */ + ath5k_hw_reg_write(ah, + (AR5K_PHY_FRAME_CTL_INI | + AR5K_PHY_TURBO_MODE | + AR5K_PHY_TURBO_SHORT | 0x2020), + AR5K_PHY_FRAME_CTL_5210); + } + /* On 5413 PHY force window length for half/quarter rate*/ + } else if ((ah->ah_mac_srev >= AR5K_SREV_AR5424) && + (ah->ah_mac_srev <= AR5K_SREV_AR5414)) { + AR5K_REG_WRITE_BITS(ah, AR5K_PHY_FRAME_CTL_5211, + AR5K_PHY_FRAME_CTL_WIN_LEN, + 3); + } + } else if (ah->ah_version == AR5K_AR5210) { + /* Set Frame Control Register for normal operation */ + ath5k_hw_reg_write(ah, (AR5K_PHY_FRAME_CTL_INI | 0x1020), + AR5K_PHY_FRAME_CTL_5210); + } } static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah, -- 2.20.1