package/kernel/mac80211/patches/rt2x00/650-rt2x00-add-support-for-external-PA-on-MT7620.patch

   1 From 9782a7f7488443568fa4d6088b73c9aff7eb8510 Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Wed, 19 Apr 2017 16:14:53 +0200
   4 Subject: [PATCH] rt2x00: add support for external PA on MT7620
   5 To: Stanislaw Gruszka <sgruszka@redhat.com>
   6 Cc: Helmut Schaa <helmut.schaa@googlemail.com>,
   7     linux-wireless@vger.kernel.org,
   8     Kalle Valo <kvalo@codeaurora.org>
   9 Content-Type: text/plain; charset="UTF-8"
  10 Content-Transfer-Encoding: quoted-printable
  11
  12 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  13 Signed-off-by: Tomislav Po=C5=BEega <pozega.tomislav@gmail.com>
  14 [pozega.tomislav@gmail.com: use chanreg and dccal helpers.]
  15
  16 ---
  17  drivers/net/wireless/ralink/rt2x00/rt2800.h    |  1 +
  18  drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 70 +++++++++++++++++++++++++-
  19  2 files changed, 70 insertions(+), 1 deletion(-)
  20
  21 --- a/drivers/net/wireless/ralink/rt2x00/rt2800.h
  22 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800.h
  23 @@ -2739,6 +2739,7 @@ enum rt2800_eeprom_word {
  24  #define EEPROM_NIC_CONF2_RX_STREAM     FIELD16(0x000f)
  25  #define EEPROM_NIC_CONF2_TX_STREAM     FIELD16(0x00f0)
  26  #define EEPROM_NIC_CONF2_CRYSTAL       FIELD16(0x0600)
  27 +#define EEPROM_NIC_CONF2_EXTERNAL_PA   FIELD16(0xc000)
  28
  29  /*
  30   * EEPROM LNA
  31 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  32 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  33 @@ -4365,6 +4365,45 @@ static void rt2800_config_channel(struct
  34                 rt2800_iq_calibrate(rt2x00dev, rf->channel);
  35         }
  36
  37 +       if (rt2x00_rt(rt2x00dev, RT6352)) {
  38 +               if (test_bit(CAPABILITY_EXTERNAL_PA_TX0,
  39 +                            &rt2x00dev->cap_flags)) {
  40 +                       rt2x00_warn(rt2x00dev, "Using incomplete support for " \
  41 +                                              "external PA\n");
  42 +                       reg = rt2800_register_read(rt2x00dev, RF_CONTROL3);
  43 +                       reg |= 0x00000101;
  44 +                       rt2800_register_write(rt2x00dev, RF_CONTROL3, reg);
  45 +
  46 +                       reg = rt2800_register_read(rt2x00dev, RF_BYPASS3);
  47 +                       reg |= 0x00000101;
  48 +                       rt2800_register_write(rt2x00dev, RF_BYPASS3, reg);
  49 +
  50 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 43, 0x73);
  51 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 44, 0x73);
  52 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 45, 0x73);
  53 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 46, 0x27);
  54 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 47, 0xC8);
  55 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 48, 0xA4);
  56 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 49, 0x05);
  57 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 54, 0x27);
  58 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 55, 0xC8);
  59 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 56, 0xA4);
  60 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 57, 0x05);
  61 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 58, 0x27);
  62 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 59, 0xC8);
  63 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 60, 0xA4);
  64 +                       rt2800_rfcsr_write_chanreg(rt2x00dev, 61, 0x05);
  65 +                       rt2800_rfcsr_write_dccal(rt2x00dev, 05, 0x00);
  66 +
  67 +                       rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT,
  68 +                                             0x36303636);
  69 +                       rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN,
  70 +                                             0x6C6C6B6C);
  71 +                       rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN,
  72 +                                             0x6C6C6B6C);
  73 +               }
  74 +       }
  75 +
  76         bbp = rt2800_bbp_read(rt2x00dev, 4);
  77         rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * conf_is_ht40(conf));
  78         rt2800_bbp_write(rt2x00dev, 4, bbp);
  79 @@ -9569,7 +9608,8 @@ static int rt2800_init_eeprom(struct rt2
  80          */
  81         eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1);
  82
  83 -       if (rt2x00_rt(rt2x00dev, RT3352)) {
  84 +       if (rt2x00_rt(rt2x00dev, RT3352) ||
  85 +           rt2x00_rt(rt2x00dev, RT6352)) {
  86                 if (rt2x00_get_field16(eeprom,
  87                     EEPROM_NIC_CONF1_EXTERNAL_TX0_PA_3352))
  88                     __set_bit(CAPABILITY_EXTERNAL_PA_TX0,
  89 @@ -9580,6 +9620,18 @@ static int rt2800_init_eeprom(struct rt2
  90                               &rt2x00dev->cap_flags);
  91         }
  92
  93 +       eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF2);
  94 +
  95 +       if (rt2x00_rt(rt2x00dev, RT6352) && eeprom != 0 && eeprom != 0xffff) {
  96 +               if (rt2x00_get_field16(eeprom,
  97 +                   EEPROM_NIC_CONF2_EXTERNAL_PA)) {
  98 +                   __set_bit(CAPABILITY_EXTERNAL_PA_TX0,
  99 +                             &rt2x00dev->cap_flags);
 100 +                   __set_bit(CAPABILITY_EXTERNAL_PA_TX1,
 101 +                             &rt2x00dev->cap_flags);
 102 +               }
 103 +       }
 104 +
 105         return 0;
 106  }
 107