From 2eb46d9bda44b3f85727fee6865d9b25725e6bf9 Mon Sep 17 00:00:00 2001 From: Pavel Roskin Date: Wed, 7 Apr 2010 01:33:33 -0400 Subject: [PATCH] ath9k: simplify AR9220 fixup code for AR_AN_TOP2 register Don't modify ah->iniModes, it's supposed to be constant. Instead, apply the fixup when the data is written to the registers. Change ath9k_hw_init_eeprom_fix() to only determine whether the fixup is needed. This allows similteneous support for AR9220 cards that need AR_AN_TOP2 fixup (such as Ubiquiti SR71-12) and those that don't need it (D-Link DWA-552 rev A2). Signed-off-by: Pavel Roskin Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/hw.c | 76 +++++------------------------ drivers/net/wireless/ath/ath9k/hw.h | 1 + 2 files changed, 13 insertions(+), 64 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 88f8bfdbded4..3b9f4c1f8d4e 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -27,9 +27,6 @@ static bool ath9k_hw_set_reset_reg(struct ath_hw *ah, u32 type); static void ath9k_hw_set_regs(struct ath_hw *ah, struct ath9k_channel *chan); -static u32 ath9k_hw_ini_fixup(struct ath_hw *ah, - struct ar5416_eeprom_def *pEepData, - u32 reg, u32 value); MODULE_AUTHOR("Atheros Communications"); MODULE_DESCRIPTION("Support for Atheros 802.11n wireless LAN cards."); @@ -844,24 +841,17 @@ static void ath9k_hw_init_mode_gain_regs(struct ath_hw *ah) static void ath9k_hw_init_eeprom_fix(struct ath_hw *ah) { - u32 i, j; - - if (ah->hw_version.devid == AR9280_DEVID_PCI) { - - /* EEPROM Fixup */ - for (i = 0; i < ah->iniModes.ia_rows; i++) { - u32 reg = INI_RA(&ah->iniModes, i, 0); + struct base_eep_header *pBase = &(ah->eeprom.def.baseEepHeader); + struct ath_common *common = ath9k_hw_common(ah); - for (j = 1; j < ah->iniModes.ia_columns; j++) { - u32 val = INI_RA(&ah->iniModes, i, j); + ah->need_an_top2_fixup = (ah->hw_version.devid == AR9280_DEVID_PCI) && + (ah->eep_map != EEP_MAP_4KBITS) && + ((pBase->version & 0xff) > 0x0a) && + (pBase->pwdclkind == 0); - INI_RA(&ah->iniModes, i, j) = - ath9k_hw_ini_fixup(ah, - &ah->eeprom.def, - reg, val); - } - } - } + if (ah->need_an_top2_fixup) + ath_print(common, ATH_DBG_EEPROM, + "needs fixup for AR_AN_TOP2 register\n"); } int ath9k_hw_init(struct ath_hw *ah) @@ -1305,51 +1295,6 @@ static void ath9k_hw_override_ini(struct ath_hw *ah, } } -static u32 ath9k_hw_def_ini_fixup(struct ath_hw *ah, - struct ar5416_eeprom_def *pEepData, - u32 reg, u32 value) -{ - struct base_eep_header *pBase = &(pEepData->baseEepHeader); - struct ath_common *common = ath9k_hw_common(ah); - - switch (ah->hw_version.devid) { - case AR9280_DEVID_PCI: - if (reg == 0x7894) { - ath_print(common, ATH_DBG_EEPROM, - "ini VAL: %x EEPROM: %x\n", value, - (pBase->version & 0xff)); - - if ((pBase->version & 0xff) > 0x0a) { - ath_print(common, ATH_DBG_EEPROM, - "PWDCLKIND: %d\n", - pBase->pwdclkind); - value &= ~AR_AN_TOP2_PWDCLKIND; - value |= AR_AN_TOP2_PWDCLKIND & - (pBase->pwdclkind << AR_AN_TOP2_PWDCLKIND_S); - } else { - ath_print(common, ATH_DBG_EEPROM, - "PWDCLKIND Earlier Rev\n"); - } - - ath_print(common, ATH_DBG_EEPROM, - "final ini VAL: %x\n", value); - } - break; - } - - return value; -} - -static u32 ath9k_hw_ini_fixup(struct ath_hw *ah, - struct ar5416_eeprom_def *pEepData, - u32 reg, u32 value) -{ - if (ah->eep_map == EEP_MAP_4KBITS) - return value; - else - return ath9k_hw_def_ini_fixup(ah, pEepData, reg, value); -} - static void ath9k_olc_init(struct ath_hw *ah) { u32 i; @@ -1455,6 +1400,9 @@ static int ath9k_hw_process_ini(struct ath_hw *ah, u32 reg = INI_RA(&ah->iniModes, i, 0); u32 val = INI_RA(&ah->iniModes, i, modesIndex); + if (reg == AR_AN_TOP2 && ah->need_an_top2_fixup) + val &= ~AR_AN_TOP2_PWDCLKIND; + REG_WRITE(ah, reg, val); if (reg >= 0x7800 && reg < 0x78a0 diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h index b02a97c72c64..f4821cf33b87 100644 --- a/drivers/net/wireless/ath/ath9k/hw.h +++ b/drivers/net/wireless/ath/ath9k/hw.h @@ -459,6 +459,7 @@ struct ath_hw { bool sw_mgmt_crypto; bool is_pciexpress; + bool need_an_top2_fixup; u16 tx_trig_level; u16 rfsilent; u32 rfkill_gpio; -- 2.20.1