package/kernel/mac80211/patches/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
  10 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  11 ---
  12  drivers/net/wireless/ralink/rt2x00/rt2800.h    |  1 +
  13  drivers/net/wireless/ralink/rt2x00/rt2800lib.c | 70 +++++++++++++++++++++++++-
  14  2 files changed, 70 insertions(+), 1 deletion(-)
  15
  16 --- a/drivers/net/wireless/ralink/rt2x00/rt2800.h
  17 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800.h
  18 @@ -2749,6 +2749,7 @@ enum rt2800_eeprom_word {
  19  #define EEPROM_NIC_CONF2_RX_STREAM     FIELD16(0x000f)
  20  #define EEPROM_NIC_CONF2_TX_STREAM     FIELD16(0x00f0)
  21  #define EEPROM_NIC_CONF2_CRYSTAL       FIELD16(0x0600)
  22 +#define EEPROM_NIC_CONF2_EXTERNAL_PA   FIELD16(0xc000)
  23
  24  /*
  25   * EEPROM LNA
  26 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  27 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  28 @@ -4120,6 +4120,61 @@ static void rt2800_config_channel(struct
  29                 rt2800_iq_calibrate(rt2x00dev, rf->channel);
  30         }
  31
  32 +       if (rt2x00_rt(rt2x00dev, RT6352)) {
  33 +               if (test_bit(CAPABILITY_EXTERNAL_PA_TX0,
  34 +                            &rt2x00dev->cap_flags)) {
  35 +                       rt2x00_warn(rt2x00dev, "Using incomplete support for " \
  36 +                                              "external PA\n");
  37 +                       reg = rt2800_register_read(rt2x00dev, RF_CONTROL3);
  38 +                       reg |= 0x00000101;
  39 +                       rt2800_register_write(rt2x00dev, RF_CONTROL3, reg);
  40 +
  41 +                       reg = rt2800_register_read(rt2x00dev, RF_BYPASS3);
  42 +                       reg |= 0x00000101;
  43 +                       rt2800_register_write(rt2x00dev, RF_BYPASS3, reg);
  44 +
  45 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 43, 0x73);
  46 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 43, 0x73);
  47 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 44, 0x73);
  48 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 44, 0x73);
  49 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 45, 0x73);
  50 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 45, 0x73);
  51 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 46, 0x27);
  52 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 46, 0x27);
  53 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 47, 0xC8);
  54 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 47, 0xC8);
  55 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 48, 0xA4);
  56 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 48, 0xA4);
  57 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 49, 0x05);
  58 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 49, 0x05);
  59 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 54, 0x27);
  60 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 54, 0x27);
  61 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 55, 0xC8);
  62 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 55, 0xC8);
  63 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 56, 0xA4);
  64 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 56, 0xA4);
  65 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 57, 0x05);
  66 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 57, 0x05);
  67 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 58, 0x27);
  68 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 58, 0x27);
  69 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 59, 0xC8);
  70 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 59, 0xC8);
  71 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 60, 0xA4);
  72 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 60, 0xA4);
  73 +                       rt2800_rfcsr_write_bank(rt2x00dev, 4, 61, 0x05);
  74 +                       rt2800_rfcsr_write_bank(rt2x00dev, 6, 61, 0x05);
  75 +                       rt2800_rfcsr_write_bank(rt2x00dev, 5, 05, 0x00);
  76 +                       rt2800_rfcsr_write_bank(rt2x00dev, 7, 05, 0x00);
  77 +
  78 +                       rt2800_register_write(rt2x00dev, TX0_RF_GAIN_CORRECT,
  79 +                                             0x36303636);
  80 +                       rt2800_register_write(rt2x00dev, TX0_RF_GAIN_ATTEN,
  81 +                                             0x6C6C6B6C);
  82 +                       rt2800_register_write(rt2x00dev, TX1_RF_GAIN_ATTEN,
  83 +                                             0x6C6C6B6C);
  84 +               }
  85 +       }
  86 +
  87         bbp = rt2800_bbp_read(rt2x00dev, 4);
  88         rt2x00_set_field8(&bbp, BBP4_BANDWIDTH, 2 * conf_is_ht40(conf));
  89         rt2800_bbp_write(rt2x00dev, 4, bbp);
  90 @@ -9314,7 +9369,8 @@ static int rt2800_init_eeprom(struct rt2
  91          */
  92         eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF1);
  93
  94 -       if (rt2x00_rt(rt2x00dev, RT3352)) {
  95 +       if (rt2x00_rt(rt2x00dev, RT3352) ||
  96 +           rt2x00_rt(rt2x00dev, RT6352)) {
  97                 if (rt2x00_get_field16(eeprom,
  98                     EEPROM_NIC_CONF1_EXTERNAL_TX0_PA_3352))
  99                     __set_bit(CAPABILITY_EXTERNAL_PA_TX0,
 100 @@ -9325,6 +9381,18 @@ static int rt2800_init_eeprom(struct rt2
 101                               &rt2x00dev->cap_flags);
 102         }
 103
 104 +       eeprom = rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF2);
 105 +
 106 +       if (rt2x00_rt(rt2x00dev, RT6352) && eeprom != 0 && eeprom != 0xffff) {
 107 +               if (rt2x00_get_field16(eeprom,
 108 +                   EEPROM_NIC_CONF2_EXTERNAL_PA)) {
 109 +                   __set_bit(CAPABILITY_EXTERNAL_PA_TX0,
 110 +                             &rt2x00dev->cap_flags);
 111 +                   __set_bit(CAPABILITY_EXTERNAL_PA_TX1,
 112 +                             &rt2x00dev->cap_flags);
 113 +               }
 114 +       }
 115 +
 116         return 0;
 117  }
 118