From c5b3c3500f935cd0ea89204f1b67c562ea64b220 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Wed, 17 Apr 2013 14:08:16 +0200 Subject: [PATCH] rt2800: add rt2800_rx_filter_calibration procedure Add procedure for both bands filter calibration and use it on individual chipset init rfcsr subroutines. Remove "Set back to initial state" code for 3290 since vendor driver DPO_RT3290_LinuxSTA_V2600_20120508 does not include it. Signed-off-by: Stanislaw Gruszka Acked-by: Gertjan van Wingerde Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2800lib.c | 103 +++++++++++++----------- 1 file changed, 57 insertions(+), 46 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 6907cd313477..ad83bcd9c409 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -4332,8 +4332,8 @@ static int rt2800_init_bbp(struct rt2x00_dev *rt2x00dev) return 0; } -static u8 rt2800_init_rx_filter(struct rt2x00_dev *rt2x00dev, - bool bw40, u8 rfcsr24, u8 filter_target) +static u8 rt2800_init_rx_filter(struct rt2x00_dev *rt2x00dev, bool bw40, + u8 filter_target) { unsigned int i; u8 bbp; @@ -4341,6 +4341,7 @@ static u8 rt2800_init_rx_filter(struct rt2x00_dev *rt2x00dev, u8 passband; u8 stopband; u8 overtuned = 0; + u8 rfcsr24 = (bw40) ? 0x27 : 0x07; rt2800_rfcsr_write(rt2x00dev, 24, rfcsr24); @@ -4409,6 +4410,52 @@ static void rt2800_rf_init_calibration(struct rt2x00_dev *rt2x00dev, rt2800_rfcsr_write(rt2x00dev, rf_reg, rfcsr); } +static void rt2800_rx_filter_calibration(struct rt2x00_dev *rt2x00dev) +{ + struct rt2800_drv_data *drv_data = rt2x00dev->drv_data; + u8 filter_tgt_bw20; + u8 filter_tgt_bw40; + u8 rfcsr, bbp; + + /* + * TODO: sync filter_tgt values with vendor driver + */ + if (rt2x00_rt(rt2x00dev, RT3070)) { + filter_tgt_bw20 = 0x16; + filter_tgt_bw40 = 0x19; + } else { + filter_tgt_bw20 = 0x13; + filter_tgt_bw40 = 0x15; + } + + drv_data->calibration_bw20 = + rt2800_init_rx_filter(rt2x00dev, false, filter_tgt_bw20); + drv_data->calibration_bw40 = + rt2800_init_rx_filter(rt2x00dev, true, filter_tgt_bw40); + + /* + * Save BBP 25 & 26 values for later use in channel switching (for 3052) + */ + rt2800_bbp_read(rt2x00dev, 25, &drv_data->bbp25); + rt2800_bbp_read(rt2x00dev, 26, &drv_data->bbp26); + + /* + * Set back to initial state + */ + rt2800_bbp_write(rt2x00dev, 24, 0); + + rt2800_rfcsr_read(rt2x00dev, 22, &rfcsr); + rt2x00_set_field8(&rfcsr, RFCSR22_BASEBAND_LOOPBACK, 0); + rt2800_rfcsr_write(rt2x00dev, 22, rfcsr); + + /* + * Set BBP back to BW20 + */ + rt2800_bbp_read(rt2x00dev, 4, &bbp); + rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 0); + rt2800_bbp_write(rt2x00dev, 4, bbp); +} + static void rt2800_normal_mode_setup_5xxx(struct rt2x00_dev *rt2x00dev) { u8 reg; @@ -4534,6 +4581,8 @@ static void rt2800_init_rfcsr_30xx(struct rt2x00_dev *rt2x00dev) rt2x00_set_field32(®, GPIO_SWITCH_5, 0); rt2800_register_write(rt2x00dev, GPIO_SWITCH, reg); } + + rt2800_rx_filter_calibration(rt2x00dev); } static void rt2800_init_rfcsr_3290(struct rt2x00_dev *rt2x00dev) @@ -4661,6 +4710,8 @@ static void rt2800_init_rfcsr_3352(struct rt2x00_dev *rt2x00dev) rt2800_rfcsr_write(rt2x00dev, 61, 0x00); rt2800_rfcsr_write(rt2x00dev, 62, 0x00); rt2800_rfcsr_write(rt2x00dev, 63, 0x00); + + rt2800_rx_filter_calibration(rt2x00dev); } static void rt2800_init_rfcsr_3390(struct rt2x00_dev *rt2x00dev) @@ -4705,6 +4756,8 @@ static void rt2800_init_rfcsr_3390(struct rt2x00_dev *rt2x00dev) rt2800_register_read(rt2x00dev, GPIO_SWITCH, ®); rt2x00_set_field32(®, GPIO_SWITCH_5, 0); rt2800_register_write(rt2x00dev, GPIO_SWITCH, reg); + + rt2800_rx_filter_calibration(rt2x00dev); } static void rt2800_init_rfcsr_3572(struct rt2x00_dev *rt2x00dev) @@ -4759,6 +4812,8 @@ static void rt2800_init_rfcsr_3572(struct rt2x00_dev *rt2x00dev) rt2x00_set_field32(®, LDO_CFG0_LDO_CORE_VLEVEL, 0); rt2x00_set_field32(®, LDO_CFG0_BGSEL, 1); rt2800_register_write(rt2x00dev, LDO_CFG0, reg); + + rt2800_rx_filter_calibration(rt2x00dev); } static void rt2800_init_rfcsr_5390(struct rt2x00_dev *rt2x00dev) @@ -5011,50 +5066,6 @@ static int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev) return 0; } - /* - * Set RX Filter calibration for 20MHz and 40MHz - */ - if (rt2x00_rt(rt2x00dev, RT3070)) { - drv_data->calibration_bw20 = - rt2800_init_rx_filter(rt2x00dev, false, 0x07, 0x16); - drv_data->calibration_bw40 = - rt2800_init_rx_filter(rt2x00dev, true, 0x27, 0x19); - } else if (rt2x00_rt(rt2x00dev, RT3071) || - rt2x00_rt(rt2x00dev, RT3090) || - rt2x00_rt(rt2x00dev, RT3352) || - rt2x00_rt(rt2x00dev, RT3390) || - rt2x00_rt(rt2x00dev, RT3572)) { - drv_data->calibration_bw20 = - rt2800_init_rx_filter(rt2x00dev, false, 0x07, 0x13); - drv_data->calibration_bw40 = - rt2800_init_rx_filter(rt2x00dev, true, 0x27, 0x15); - } - - /* - * Save BBP 25 & 26 values for later use in channel switching - */ - rt2800_bbp_read(rt2x00dev, 25, &drv_data->bbp25); - rt2800_bbp_read(rt2x00dev, 26, &drv_data->bbp26); - - if (!rt2x00_rt(rt2x00dev, RT5390) && - !rt2x00_rt(rt2x00dev, RT5392)) { - /* - * Set back to initial state - */ - rt2800_bbp_write(rt2x00dev, 24, 0); - - rt2800_rfcsr_read(rt2x00dev, 22, &rfcsr); - rt2x00_set_field8(&rfcsr, RFCSR22_BASEBAND_LOOPBACK, 0); - rt2800_rfcsr_write(rt2x00dev, 22, rfcsr); - - /* - * Set BBP back to BW20 - */ - rt2800_bbp_read(rt2x00dev, 4, &bbp); - rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 0); - rt2800_bbp_write(rt2x00dev, 4, bbp); - } - if (rt2x00_rt_rev_lt(rt2x00dev, RT3070, REV_RT3070F) || rt2x00_rt_rev_lt(rt2x00dev, RT3071, REV_RT3071E) || rt2x00_rt_rev_lt(rt2x00dev, RT3090, REV_RT3090E) || -- GitLab