From f36bb0ca1be5bcb7148ad32263626f8609dfc0d7 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Mon, 8 Jul 2013 16:08:27 +0200 Subject: [PATCH] rt2x00: rt2800lib: fix LNA_A[12] gain values for RT3593 The LNA_A[12] gain values are stored at a different offset in the EEPROM on RT3593 based devices. However the current code unconditionally reads those values from the location used by other chipsets. Fix the code to use the correct EEPROM offset. Based on the DPO_RT5572_LinuxSTA_2.6.0.1_20120629 driver. References: RT3593_EEPROM_RSSI2_OFFSET_ALNAGAIN1_24G_READ in include/chip/rt3593.h RT3593_EEPROM_RSSI2_OFFSET_ALNAGAIN2_5G_READ in include/chip/rt3593.h Signed-off-by: Gabor Juhos Acked-by: Stanislaw Gruszka Acked-by: Gertjan van Wingerde Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2800.h | 4 +++ drivers/net/wireless/rt2x00/rt2800lib.c | 55 ++++++++++++++++++++++++++------- 2 files changed, 47 insertions(+), 12 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2800.h b/drivers/net/wireless/rt2x00/rt2800.h index 69749ba..7688e15 100644 --- a/drivers/net/wireless/rt2x00/rt2800.h +++ b/drivers/net/wireless/rt2x00/rt2800.h @@ -2672,6 +2672,10 @@ enum rt2800_eeprom_word { #define EEPROM_BBP_VALUE FIELD16(0x00ff) #define EEPROM_BBP_REG_ID FIELD16(0xff00) +/* EEPROM_EXT_LNA2 */ +#define EEPROM_EXT_LNA2_A1 FIELD16(0x00ff) +#define EEPROM_EXT_LNA2_A2 FIELD16(0xff00) + /* * EEPROM IQ Calibration, unlike other entries those are byte addresses. */ diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 65045e0..419ea05 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -1826,11 +1826,25 @@ static void rt2800_config_lna_gain(struct rt2x00_dev *rt2x00dev, rt2800_eeprom_read(rt2x00dev, EEPROM_LNA, &eeprom); lna_gain = rt2x00_get_field16(eeprom, EEPROM_LNA_A0); } else if (libconf->rf.channel <= 128) { - rt2800_eeprom_read(rt2x00dev, EEPROM_RSSI_BG2, &eeprom); - lna_gain = rt2x00_get_field16(eeprom, EEPROM_RSSI_BG2_LNA_A1); + if (rt2x00_rt(rt2x00dev, RT3593)) { + rt2800_eeprom_read(rt2x00dev, EEPROM_EXT_LNA2, &eeprom); + lna_gain = rt2x00_get_field16(eeprom, + EEPROM_EXT_LNA2_A1); + } else { + rt2800_eeprom_read(rt2x00dev, EEPROM_RSSI_BG2, &eeprom); + lna_gain = rt2x00_get_field16(eeprom, + EEPROM_RSSI_BG2_LNA_A1); + } } else { - rt2800_eeprom_read(rt2x00dev, EEPROM_RSSI_A2, &eeprom); - lna_gain = rt2x00_get_field16(eeprom, EEPROM_RSSI_A2_LNA_A2); + if (rt2x00_rt(rt2x00dev, RT3593)) { + rt2800_eeprom_read(rt2x00dev, EEPROM_EXT_LNA2, &eeprom); + lna_gain = rt2x00_get_field16(eeprom, + EEPROM_EXT_LNA2_A2); + } else { + rt2800_eeprom_read(rt2x00dev, EEPROM_RSSI_A2, &eeprom); + lna_gain = rt2x00_get_field16(eeprom, + EEPROM_RSSI_A2_LNA_A2); + } } rt2x00dev->lna_gain = lna_gain; @@ -6488,10 +6502,12 @@ static int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev) rt2800_eeprom_read(rt2x00dev, EEPROM_RSSI_BG2, &word); if (abs(rt2x00_get_field16(word, EEPROM_RSSI_BG2_OFFSET2)) > 10) rt2x00_set_field16(&word, EEPROM_RSSI_BG2_OFFSET2, 0); - if (rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0x00 || - rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0xff) - rt2x00_set_field16(&word, EEPROM_RSSI_BG2_LNA_A1, - default_lna_gain); + if (!rt2x00_rt(rt2x00dev, RT3593)) { + if (rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0x00 || + rt2x00_get_field16(word, EEPROM_RSSI_BG2_LNA_A1) == 0xff) + rt2x00_set_field16(&word, EEPROM_RSSI_BG2_LNA_A1, + default_lna_gain); + } rt2800_eeprom_write(rt2x00dev, EEPROM_RSSI_BG2, word); drv_data->txmixer_gain_5g = rt2800_get_txmixer_gain_5g(rt2x00dev); @@ -6506,12 +6522,27 @@ static int rt2800_validate_eeprom(struct rt2x00_dev *rt2x00dev) rt2800_eeprom_read(rt2x00dev, EEPROM_RSSI_A2, &word); if (abs(rt2x00_get_field16(word, EEPROM_RSSI_A2_OFFSET2)) > 10) rt2x00_set_field16(&word, EEPROM_RSSI_A2_OFFSET2, 0); - if (rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0x00 || - rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0xff) - rt2x00_set_field16(&word, EEPROM_RSSI_A2_LNA_A2, - default_lna_gain); + if (!rt2x00_rt(rt2x00dev, RT3593)) { + if (rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0x00 || + rt2x00_get_field16(word, EEPROM_RSSI_A2_LNA_A2) == 0xff) + rt2x00_set_field16(&word, EEPROM_RSSI_A2_LNA_A2, + default_lna_gain); + } rt2800_eeprom_write(rt2x00dev, EEPROM_RSSI_A2, word); + if (rt2x00_rt(rt2x00dev, RT3593)) { + rt2800_eeprom_read(rt2x00dev, EEPROM_EXT_LNA2, &word); + if (rt2x00_get_field16(word, EEPROM_EXT_LNA2_A1) == 0x00 || + rt2x00_get_field16(word, EEPROM_EXT_LNA2_A1) == 0xff) + rt2x00_set_field16(&word, EEPROM_EXT_LNA2_A1, + default_lna_gain); + if (rt2x00_get_field16(word, EEPROM_EXT_LNA2_A2) == 0x00 || + rt2x00_get_field16(word, EEPROM_EXT_LNA2_A2) == 0xff) + rt2x00_set_field16(&word, EEPROM_EXT_LNA2_A1, + default_lna_gain); + rt2800_eeprom_write(rt2x00dev, EEPROM_EXT_LNA2, word); + } + return 0; } -- 2.7.4