mac80211: rework MT7620 PA/LNA RF calibration

This patch makes some improvements to the MT7620 RF calibration.

1. Move MT7620 PA/LNA calibration code to dedicated functions.
2. Restore RF and BBP registers before R-Calibration.
3. Do Rx DCOC calibration again before RXIQ calibration.
4. Use SoC specific AGC initial LNA value.
5. Correct MAC_RX_EN mask in rt2800_r_calibration()[1].

[1] This change may fix the "BBP/RF register access failed" error:
ieee80211 phy0: rt2800_wait_bbp_rf_ready: Error - BBP/RF register access failed, aborting

Signed-off-by: Shiji Yang <yangshiji66@qq.com>
(cherry picked from commit 2824fa6963)
This commit is contained in:
Shiji Yang 2023-07-29 21:24:09 +08:00 committed by Daniel Golle
parent b2d264dc68
commit 4f1a7e8897

View File

@ -0,0 +1,434 @@
From: Shiji Yang <yangshiji66@outlook.com>
Date: Tue, 25 Jul 2023 20:05:06 +0800
Subject: [PATCH] wifi: rt2x00: rework MT7620 PA/LNA RF calibration
1. Move MT7620 PA/LNA calibration code to dedicated functions.
Calibration stage 1 is executed before configuring channels and
stage 2 is executed after configuring channels.
2. For external PA/LNA devices, restore RF and BBP registers before
R-Calibration.
3. Do Rx DCOC calibration again before RXIQ calibration.
4. Correct MAC_SYS_CTRL register RX mask to 0x08 in R-Calibration
function. For MAC_SYS_CTRL register, Bit[2] controls MAC_TX_EN
and Bit[3] controls MAC_RX_EN (Bit index starts from 0).
5. Move the channel configuration code from rt2800_vco_calibration()
to the rt2800_config_channel().
6. Use MT7620 SOC specific AGC initial LNA value instead of the
RT5592's value.
7. Adjust the register operation sequence according to the vendor
driver code. This may not be useful, but it can make things
clearer when developers try to review it.
Signed-off-by: Shiji Yang <yangshiji66@outlook.com>
---
.../net/wireless/ralink/rt2x00/rt2800lib.c | 318 +++++++++++-------
drivers/net/wireless/ralink/rt2x00/rt2x00.h | 6 +
2 files changed, 194 insertions(+), 130 deletions(-)
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
@@ -62,6 +62,9 @@ MODULE_PARM_DESC(watchdog, "Enable watch
rt2800_regbusy_read((__dev), H2M_MAILBOX_CSR, \
H2M_MAILBOX_CSR_OWNER, (__reg))
+static void rt6352_init_palna_stage1(struct rt2x00_dev *rt2x00dev);
+static void rt6352_init_palna_stage2(struct rt2x00_dev *rt2x00dev);
+
static inline bool rt2800_is_305x_soc(struct rt2x00_dev *rt2x00dev)
{
/* check for rt2872 on SoC */
@@ -3881,14 +3884,6 @@ static void rt2800_config_channel_rf7620
rfcsr |= tx_agc_fc;
rt2800_rfcsr_write_bank(rt2x00dev, 7, 59, rfcsr);
}
-
- if (conf_is_ht40(conf)) {
- rt2800_bbp_glrt_write(rt2x00dev, 141, 0x10);
- rt2800_bbp_glrt_write(rt2x00dev, 157, 0x2f);
- } else {
- rt2800_bbp_glrt_write(rt2x00dev, 141, 0x1a);
- rt2800_bbp_glrt_write(rt2x00dev, 157, 0x40);
- }
}
static void rt2800_config_alc_rt6352(struct rt2x00_dev *rt2x00dev,
@@ -4151,6 +4146,9 @@ static void rt2800_config_channel(struct
rt2800_txpower_to_dev(rt2x00dev, rf->channel,
info->default_power3);
+ if (rt2x00_rt(rt2x00dev, RT6352))
+ rt6352_init_palna_stage1(rt2x00dev);
+
switch (rt2x00dev->chip.rt) {
case RT3883:
rt3883_bbp_adjust(rt2x00dev, rf);
@@ -4457,89 +4455,65 @@ static void rt2800_config_channel(struct
usleep_range(1000, 1500);
}
- if (rt2x00_rt(rt2x00dev, RT5592) || rt2x00_rt(rt2x00dev, RT6352)) {
+ if (rt2x00_rt(rt2x00dev, RT5592)) {
reg = 0x10;
- if (!conf_is_ht40(conf)) {
- if (rt2x00_rt(rt2x00dev, RT6352) &&
- rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
- reg |= 0x5;
- } else {
- reg |= 0xa;
- }
- }
+ if (!conf_is_ht40(conf))
+ reg |= 0xa;
rt2800_bbp_write(rt2x00dev, 195, 141);
rt2800_bbp_write(rt2x00dev, 196, reg);
- /* AGC init.
- * Despite the vendor driver using different values here for
- * RT6352 chip, we use 0x1c for now. This may have to be changed
- * once TSSI got implemented.
- */
reg = (rf->channel <= 14 ? 0x1c : 0x24) + 2*rt2x00dev->lna_gain;
rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, reg);
-
- if (rt2x00_rt(rt2x00dev, RT5592))
- rt2800_iq_calibrate(rt2x00dev, rf->channel);
+
+ rt2800_iq_calibrate(rt2x00dev, rf->channel);
}
if (rt2x00_rt(rt2x00dev, RT6352)) {
- if (test_bit(CAPABILITY_EXTERNAL_PA_TX0,
- &rt2x00dev->cap_flags)) {
- 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);
+ /* BBP for GLRT BW */
+ if (conf_is_ht40(conf)) {
+ rt2800_bbp_glrt_write(rt2x00dev, 141, 0x10);
+ rt2800_bbp_glrt_write(rt2x00dev, 157, 0x2f);
+ } else {
+ rt2800_bbp_glrt_write(rt2x00dev, 141, 0x1a);
+ rt2800_bbp_glrt_write(rt2x00dev, 157, 0x40);
- 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);
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_lna_bg(rt2x00dev))
+ rt2800_bbp_glrt_write(rt2x00dev, 141, 0x15);
}
- if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
- 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, 14, 0x66);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 17, 0x20);
- rt2800_rfcsr_write_chanreg(rt2x00dev, 18, 0x42);
- rt2800_bbp_write(rt2x00dev, 75, 0x68);
- rt2800_bbp_write(rt2x00dev, 76, 0x4C);
- rt2800_bbp_write(rt2x00dev, 79, 0x1C);
- rt2800_bbp_write(rt2x00dev, 80, 0x0C);
- rt2800_bbp_write(rt2x00dev, 82, 0xB6);
- /* bank 0 RF reg 42 and glrt BBP reg 141 will be set in
- * config channel function in dependence of channel and
- * HT20/HT40 so don't touch it
- */
+ if (rt2x00dev->default_ant.rx_chain_num == 1) {
+ rt2800_bbp_write(rt2x00dev, 91, 0x07);
+ rt2800_bbp_write(rt2x00dev, 95, 0x1A);
+ rt2800_bbp_write(rt2x00dev, 195, 128);
+ rt2800_bbp_write(rt2x00dev, 196, 0xA0);
+ rt2800_bbp_write(rt2x00dev, 195, 170);
+ rt2800_bbp_write(rt2x00dev, 196, 0x12);
+ rt2800_bbp_write(rt2x00dev, 195, 171);
+ rt2800_bbp_write(rt2x00dev, 196, 0x10);
+ } else {
+ rt2800_bbp_write(rt2x00dev, 91, 0x06);
+ rt2800_bbp_write(rt2x00dev, 95, 0x9A);
+ rt2800_bbp_write(rt2x00dev, 195, 128);
+ rt2800_bbp_write(rt2x00dev, 196, 0xE0);
+ rt2800_bbp_write(rt2x00dev, 195, 170);
+ rt2800_bbp_write(rt2x00dev, 196, 0x30);
+ rt2800_bbp_write(rt2x00dev, 195, 171);
+ rt2800_bbp_write(rt2x00dev, 196, 0x30);
}
+
+ /* AGC init */
+ reg = rf->channel <= 14 ? 0x04 + 2 * rt2x00dev->lna_gain : 0;
+ rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, reg);
+
+ /* On 11A, We should delay and wait RF/BBP to be stable
+ * and the appropriate time should be 1000 micro seconds
+ * 2005/06/05 - On 11G, we also need this delay time.
+ * Otherwise it's difficult to pass the WHQL.
+ */
+ usleep_range(1000, 1500);
+
+ rt6352_init_palna_stage2(rt2x00dev);
}
bbp = rt2800_bbp_read(rt2x00dev, 4);
@@ -5649,43 +5623,6 @@ void rt2800_vco_calibration(struct rt2x0
}
}
rt2800_register_write(rt2x00dev, TX_PIN_CFG, tx_pin);
-
- if (rt2x00_rt(rt2x00dev, RT6352)) {
- if (rt2x00dev->default_ant.rx_chain_num == 1) {
- rt2800_bbp_write(rt2x00dev, 91, 0x07);
- rt2800_bbp_write(rt2x00dev, 95, 0x1A);
- rt2800_bbp_write(rt2x00dev, 195, 128);
- rt2800_bbp_write(rt2x00dev, 196, 0xA0);
- rt2800_bbp_write(rt2x00dev, 195, 170);
- rt2800_bbp_write(rt2x00dev, 196, 0x12);
- rt2800_bbp_write(rt2x00dev, 195, 171);
- rt2800_bbp_write(rt2x00dev, 196, 0x10);
- } else {
- rt2800_bbp_write(rt2x00dev, 91, 0x06);
- rt2800_bbp_write(rt2x00dev, 95, 0x9A);
- rt2800_bbp_write(rt2x00dev, 195, 128);
- rt2800_bbp_write(rt2x00dev, 196, 0xE0);
- rt2800_bbp_write(rt2x00dev, 195, 170);
- rt2800_bbp_write(rt2x00dev, 196, 0x30);
- rt2800_bbp_write(rt2x00dev, 195, 171);
- rt2800_bbp_write(rt2x00dev, 196, 0x30);
- }
-
- if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
- rt2800_bbp_write(rt2x00dev, 75, 0x68);
- rt2800_bbp_write(rt2x00dev, 76, 0x4C);
- rt2800_bbp_write(rt2x00dev, 79, 0x1C);
- rt2800_bbp_write(rt2x00dev, 80, 0x0C);
- rt2800_bbp_write(rt2x00dev, 82, 0xB6);
- }
-
- /* On 11A, We should delay and wait RF/BBP to be stable
- * and the appropriate time should be 1000 micro seconds
- * 2005/06/05 - On 11G, we also need this delay time.
- * Otherwise it's difficult to pass the WHQL.
- */
- usleep_range(1000, 1500);
- }
}
EXPORT_SYMBOL_GPL(rt2800_vco_calibration);
@@ -8650,7 +8587,7 @@ static void rt2800_r_calibration(struct
rt2x00_warn(rt2x00dev, "Wait MAC Tx Status to MAX !!!\n");
maccfg = rt2800_register_read(rt2x00dev, MAC_SYS_CTRL);
- maccfg &= (~0x04);
+ maccfg &= (~0x08);
rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, maccfg);
if (unlikely(rt2800_wait_bbp_rf_ready(rt2x00dev, MAC_STATUS_CFG_BBP_RF_BUSY_RX)))
@@ -10688,30 +10625,151 @@ static void rt2800_init_rfcsr_6352(struc
rt2800_rfcsr_write_dccal(rt2x00dev, 5, 0x00);
rt2800_rfcsr_write_dccal(rt2x00dev, 17, 0x7C);
}
+}
- rt6352_enable_pa_pin(rt2x00dev, 0);
- rt2800_r_calibration(rt2x00dev);
- rt2800_rf_self_txdc_cal(rt2x00dev);
- rt2800_rxdcoc_calibration(rt2x00dev);
- rt2800_bw_filter_calibration(rt2x00dev, true);
- rt2800_bw_filter_calibration(rt2x00dev, false);
- rt2800_loft_iq_calibration(rt2x00dev);
- rt2800_rxiq_calibration(rt2x00dev);
- rt6352_enable_pa_pin(rt2x00dev, 1);
+static void rt6352_init_ext_palna(struct rt2x00_dev *rt2x00dev)
+{
+ u32 reg;
+
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ 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);
+ }
- if (rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
rt2800_rfcsr_write_chanreg(rt2x00dev, 14, 0x66);
rt2800_rfcsr_write_chanreg(rt2x00dev, 17, 0x20);
rt2800_rfcsr_write_chanreg(rt2x00dev, 18, 0x42);
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_pa(rt2x00dev)) {
+ 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);
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_rfcsr_write_dccal(rt2x00dev, 05, 0x00);
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
rt2800_bbp_write(rt2x00dev, 75, 0x68);
rt2800_bbp_write(rt2x00dev, 76, 0x4C);
rt2800_bbp_write(rt2x00dev, 79, 0x1C);
rt2800_bbp_write(rt2x00dev, 80, 0x0C);
rt2800_bbp_write(rt2x00dev, 82, 0xB6);
- /* bank 0 RF reg 42 and glrt BBP reg 141 will be set in config
- * channel function in dependence of channel and HT20/HT40,
- * so don't touch them here.
- */
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_pa(rt2x00dev)) {
+ 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);
+ }
+}
+
+static void rt6352_restore_rf_bbp(struct rt2x00_dev *rt2x00dev)
+{
+ if (rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_register_write(rt2x00dev, RF_CONTROL3, 0x0);
+ rt2800_register_write(rt2x00dev, RF_BYPASS3, 0x0);
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 14, 0x16);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 17, 0x23);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 18, 0x02);
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_pa(rt2x00dev))
+ {
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 43, 0xD3);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 44, 0xB3);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 45, 0xD5);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 46, 0x27);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 47, 0x6C);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 48, 0xFC);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 49, 0x1F);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 54, 0x27);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 55, 0x66);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 56, 0xFF);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 57, 0x1C);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 58, 0x20);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 59, 0x6B);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 60, 0xF7);
+ rt2800_rfcsr_write_chanreg(rt2x00dev, 61, 0x09);
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1 &&
+ rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt2800_bbp_write(rt2x00dev, 75, 0x60);
+ rt2800_bbp_write(rt2x00dev, 76, 0x44);
+ rt2800_bbp_write(rt2x00dev, 79, 0x1C);
+ rt2800_bbp_write(rt2x00dev, 80, 0x0C);
+ rt2800_bbp_write(rt2x00dev, 82, 0xB6);
+ }
+
+ if (rt2800_hw_get_chippkg(rt2x00dev) == 1
+ && rt2x00_has_cap_external_pa(rt2x00dev)) {
+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT, 0x3630363A);
+ rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN, 0x6C6C666C);
+ rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN, 0x6C6C666C);
+ }
+}
+
+/* MT7620 PA/LNA initialization before switching channels */
+static void rt6352_init_palna_stage1(struct rt2x00_dev *rt2x00dev)
+{
+ if (rt2x00_has_cap_external_pa(rt2x00dev) ||
+ rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt6352_enable_pa_pin(rt2x00dev, 0);
+ rt6352_restore_rf_bbp(rt2x00dev);
+ }
+
+ rt2800_r_calibration(rt2x00dev);
+}
+
+/* MT7620 PA/LNA initialization after switching channels */
+static void rt6352_init_palna_stage2(struct rt2x00_dev *rt2x00dev)
+{
+ rt2800_rf_self_txdc_cal(rt2x00dev);
+ rt2800_rxdcoc_calibration(rt2x00dev);
+ rt2800_bw_filter_calibration(rt2x00dev, true);
+ rt2800_bw_filter_calibration(rt2x00dev, false);
+ rt2800_loft_iq_calibration(rt2x00dev);
+
+ /* missing DPD Calibration for devices using internal PA */
+
+ rt2800_rxdcoc_calibration(rt2x00dev);
+ rt2800_rxiq_calibration(rt2x00dev);
+
+ if(rt2x00_has_cap_external_pa(rt2x00dev) ||
+ rt2x00_has_cap_external_lna_bg(rt2x00dev)) {
+ rt6352_enable_pa_pin(rt2x00dev, 1);
+ rt6352_init_ext_palna(rt2x00dev);
}
}
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
@@ -1277,6 +1277,12 @@ rt2x00_has_cap_external_lna_bg(struct rt
}
static inline bool
+rt2x00_has_cap_external_pa(struct rt2x00_dev *rt2x00dev)
+{
+ return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_EXTERNAL_PA_TX0);
+}
+
+static inline bool
rt2x00_has_cap_double_antenna(struct rt2x00_dev *rt2x00dev)
{
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_DOUBLE_ANTENNA);