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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 <mickflemm@gmail.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nick Kossifidis 2010-11-23 21:04:43 +02:00 committed by John W. Linville
parent 325089ab58
commit b405086ba4
4 changed files with 52 additions and 29 deletions
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14
drivers/net/wireless/ath/ath5k/ath5k.h
View File

@ -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 */

13
drivers/net/wireless/ath/ath5k/qcu.c
View File

@ -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);
}
/*

2
drivers/net/wireless/ath/ath5k/reg.h
View File

@ -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 */

52
drivers/net/wireless/ath/ath5k/reset.c
View File

@ -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,