2007/11/1, Luis R. Rodriguez <mcgrof@xxxxxxxxx>:
> ath5k_hw_reset() was always setting initval and eeprom settings for B mode
> when using G mode. This is because a B channel was being picked up first. We
> should first instead check for G channel. This patch also introduces a
> driver_mode variable which should be used instead for determing
> more reliably the mode we're in.
>
> This fixing another bug where IQ calibration was not being run for
> G mode as CHANNEL_B was always being picked up first. We now instead
> check for driver_mode.
>
> Similar problem was occurring in ath5k_hw_rf5112_rfregs(), we fix this
> there too.
>
> Changes to phy.c, hw.c
> Changes-licensed-under: ISC
>
> Signed-off-by: Luis R. Rodriguez <mcgrof@xxxxxxxxx>
> ---
> drivers/net/wireless/ath5k/hw.c | 27 +++++++++++++++++----------
> drivers/net/wireless/ath5k/phy.c | 6 +++---
> 2 files changed, 20 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/net/wireless/ath5k/hw.c b/drivers/net/wireless/ath5k/hw.c
> index 50ceab0..8ac88e7 100644
> --- a/drivers/net/wireless/ath5k/hw.c
> +++ b/drivers/net/wireless/ath5k/hw.c
> @@ -538,7 +538,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
> struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
> u32 data, s_seq, s_ant, s_led[3];
> s32 noise_floor;
> - unsigned int i, mode, freq, ee_mode, ant[2];
> + unsigned int i, mode, freq, ee_mode, ant[2], driver_mode = -1;
> int ret;
>
> AR5K_TRACE;
> @@ -598,28 +598,32 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
> mode = AR5K_INI_VAL_11A;
> freq = AR5K_INI_RFGAIN_5GHZ;
> ee_mode = AR5K_EEPROM_MODE_11A;
> + driver_mode = MODE_IEEE80211A;
> break;
> - case CHANNEL_B:
> - mode = AR5K_INI_VAL_11B;
> - freq = AR5K_INI_RFGAIN_2GHZ;
> - ee_mode = AR5K_EEPROM_MODE_11B;
> - break;
> - /* Is this ok on 5211 too ? */
> case CHANNEL_G:
> mode = AR5K_INI_VAL_11G;
> freq = AR5K_INI_RFGAIN_2GHZ;
> ee_mode = AR5K_EEPROM_MODE_11G;
> + driver_mode = MODE_IEEE80211G;
> + break;
> + case CHANNEL_B:
> + mode = AR5K_INI_VAL_11B;
> + freq = AR5K_INI_RFGAIN_2GHZ;
> + ee_mode = AR5K_EEPROM_MODE_11B;
> + driver_mode = MODE_IEEE80211B;
> break;
> case CHANNEL_T:
> mode = AR5K_INI_VAL_11A_TURBO;
> freq = AR5K_INI_RFGAIN_5GHZ;
> ee_mode = AR5K_EEPROM_MODE_11A;
> + driver_mode = MODE_ATHEROS_TURBO;
> break;
> /*Is this ok on 5211 too ?*/
> case CHANNEL_TG:
> mode = AR5K_INI_VAL_11G_TURBO;
> freq = AR5K_INI_RFGAIN_2GHZ;
> ee_mode = AR5K_EEPROM_MODE_11G;
> + driver_mode = MODE_ATHEROS_TURBOG;
> break;
> case CHANNEL_XR:
> if (ah->ah_version == AR5K_AR5211) {
> @@ -629,6 +633,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
> mode = AR5K_INI_VAL_XR;
> freq = AR5K_INI_RFGAIN_5GHZ;
> ee_mode = AR5K_EEPROM_MODE_11A;
> + driver_mode = MODE_IEEE80211A;
> break;
> default:
> AR5K_PRINTF("invalid channel: %d\n", channel->freq);
> @@ -662,7 +667,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
> if (ah->ah_version == AR5K_AR5212) {
>
> /*For 802.11b*/
> - if (!(channel->val & CHANNEL_B)) {
> + if (driver_mode == MODE_IEEE80211B) {
>
> /*Get rate table for this operation mode*/
> rt = ath5k_hw_get_rate_table(ah,
> @@ -773,7 +778,7 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
> /*Enable/disable 802.11b mode on 5111
> (enable 2111 frequency converter + CCK)*/
> if (ah->ah_radio == AR5K_RF5111) {
> - if (channel->val & CHANNEL_B)
> + if (driver_mode == MODE_IEEE80211B)
> AR5K_REG_ENABLE_BITS(ah, AR5K_TXCFG,
> AR5K_TXCFG_B_MODE);
> else
> @@ -957,7 +962,9 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum ieee80211_if_types op_mode,
>
> ah->ah_calibration = false;
>
> - if (!(channel->val & CHANNEL_B)) {
> + /* A and G modes can use QAM modulation which requires enabling
> + * I and Q calibration. Don't bother in B mode. */
Just a note, BPSK/QPSK also need /q calibration, so you'd better write
"A and G modes use OFDM modulation which...".
> + if (!(driver_mode == MODE_IEEE80211B)) {
> ah->ah_calibration = true;
> AR5K_REG_WRITE_BITS(ah, AR5K_PHY_IQ,
> AR5K_PHY_IQ_CAL_NUM_LOG_MAX, 15);
> diff --git a/drivers/net/wireless/ath5k/phy.c b/drivers/net/wireless/ath5k/phy.c
> index d3735bc..14520cd 100644
> --- a/drivers/net/wireless/ath5k/phy.c
> +++ b/drivers/net/wireless/ath5k/phy.c
> @@ -870,10 +870,10 @@ static int ath5k_hw_rf5112_rfregs(struct ath5k_hw *ah,
>
> /* Modify bank 6 */
> if (channel->val & CHANNEL_2GHZ) {
> - if (channel->val & CHANNEL_B)
> - ee_mode = AR5K_EEPROM_MODE_11B;
> - else
> + if (channel->val & CHANNEL_G)
> ee_mode = AR5K_EEPROM_MODE_11G;
> + else
> + ee_mode = AR5K_EEPROM_MODE_11B;
> obdb = 0;
>
> if (!ath5k_hw_rfregs_op(rf, ah->ah_offset[6],
> --
> 1.5.2.5
>
>
Acked-by: Nick Kossifidis <mickflemm@xxxxxxxxx>
--
GPG ID: 0xD21DB2DB
As you read this post global entropy rises. Have Fun ;-)
Nick
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