From 9782a7f7488443568fa4d6088b73c9aff7eb8510 Mon Sep 17 00:00:00 2001 From: Daniel Golle Date: Wed, 19 Apr 2017 16:14:53 +0200 Subject: [PATCH] rt2x00: add support for external PA on MT7620 To: Stanislaw Gruszka Cc: Helmut Schaa , linux-wireless@vger.kernel.org, Kalle Valo Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Signed-off-by: Daniel Golle Signed-off-by: Tomislav Po=C5=BEega [pozega.tomislav@gmail.com: use chanreg and dccal helpers.] --- drivers/net/wireless/ralink/rt2x00/rt2800.h | 1 + drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 70 +++++++++++++++++++++++++- 2 files changed, 70 insertions(+), 1 deletion(-) --- a/drivers/net/wireless/ralink/rt2x00/rt2800.h +++ b/drivers/net/wireless/ralink/rt2x00/rt2800.h @@ -2750,6 +2750,7 @@ enum rt2800_eeprom_word { #define EEPROM_NIC_CONF2_RX_STREAM FIELD16(0x000f) #define EEPROM_NIC_CONF2_TX_STREAM FIELD16(0x00f0) #define EEPROM_NIC_CONF2_CRYSTAL FIELD16(0x0600) +#define EEPROM_NIC_CONF2_EXTERNAL_PA FIELD16(0xc000) /* * EEPROM LNA --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c @@ -4290,6 +4290,45 @@ static void rt2800_config_channel(struct rt2800_iq_calibrate(rt2x00dev, rf->channel); } + if (rt2x00_rt(rt2x00dev, RT6352)) { + if (test_bit(CAPABILITY_EXTERNAL_PA_TX0, + &rt2x00dev->cap_flags)) { + rt2x00_warn(rt2x00dev, "Using incomplete support for " \ + "external PA\n"); + reg = rt2800_register_read(rt2x00dev, RF_CONTROL3); + reg |= 0x00000101; + rt2800_register_write(rt2x00dev, RF_CONTROL3, reg); + + reg = rt2800_register_read(rt2x00dev, RF_BYPASS3); + reg |= 0x00000101; + rt2800_register_write(rt2x00dev, RF_BYPASS3, reg); + + rt2800_rfcsr_write_chanreg(rt2x00dev, 43, 0x73); + rt2800_rfcsr_write_chanreg(rt2x00dev, 44, 0x73); + rt2800_rfcsr_write_chanreg(rt2x00dev, 45, 0x73); + rt2800_rfcsr_write_chanreg(rt2x00dev, 46, 0x27); + rt2800_rfcsr_write_chanreg(rt2x00dev, 47, 0xC8); + rt2800_rfcsr_write_chanreg(rt2x00dev, 48, 0xA4); + rt2800_rfcsr_write_chanreg(rt2x00dev, 49, 0x05); + rt2800_rfcsr_write_chanreg(rt2x00dev, 54, 0x27); + rt2800_rfcsr_write_chanreg(rt2x00dev, 55, 0xC8); + rt2800_rfcsr_write_chanreg(rt2x00dev, 56, 0xA4); + rt2800_rfcsr_write_chanreg(rt2x00dev, 57, 0x05); + rt2800_rfcsr_write_chanreg(rt2x00dev, 58, 0x27); + rt2800_rfcsr_write_chanreg(rt2x00dev, 59, 0xC8); + rt2800_rfcsr_write_chanreg(rt2x00dev, 60, 0xA4); + rt2800_rfcsr_write_chanreg(rt2x00dev, 61, 0x05); + rt2800_rfcsr_write_dccal(rt2x00dev, 05, 0x00); + + rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT, + 0x36303636); + rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN, + 0x6C6C6B6C); + rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN, + 0x6C6C6B6C); + } + } + bbp = rt2800_bbp_read(rt2x00dev, 4); rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * conf_is_ht40(conf)); rt2800_bbp_write(rt2x00dev, 4, bbp); @@ -9487,7 +9526,8 @@ static int rt2800_init_eeprom(struct rt2 */ eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1); - if (rt2x00_rt(rt2x00dev, RT3352)) { + if (rt2x00_rt(rt2x00dev, RT3352) || + rt2x00_rt(rt2x00dev, RT6352)) { if (rt2x00_get_field16(eeprom, EEPROM_NIC_CONF1_EXTERNAL_TX0_PA_3352)) __set_bit(CAPABILITY_EXTERNAL_PA_TX0, @@ -9498,6 +9538,18 @@ static int rt2800_init_eeprom(struct rt2 &rt2x00dev->cap_flags); } + eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF2); + + if (rt2x00_rt(rt2x00dev, RT6352) && eeprom != 0 && eeprom != 0xffff) { + if (rt2x00_get_field16(eeprom, + EEPROM_NIC_CONF2_EXTERNAL_PA)) { + __set_bit(CAPABILITY_EXTERNAL_PA_TX0, + &rt2x00dev->cap_flags); + __set_bit(CAPABILITY_EXTERNAL_PA_TX1, + &rt2x00dev->cap_flags); + } + } + return 0; }