package/kernel/mac80211/patches/611-rt2x00-rf_vals-rt3352-xtal20.patch

   1 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
   2 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
   3 @@ -36,6 +36,7 @@
   4  #include <linux/kernel.h>
   5  #include <linux/module.h>
   6  #include <linux/slab.h>
   7 +#include <linux/clk.h>
   8
   9  #include "rt2x00.h"
  10  #include "rt2800lib.h"
  11 @@ -8183,6 +8184,27 @@ static const struct rf_channel rf_vals_5
  12         {196, 83, 0, 12, 1},
  13  };
  14
  15 +/*
  16 + * RF value list for rt3xxx with Xtal20MHz
  17 + * Supports: 2.4 GHz (all) (RF3322)
  18 + */
  19 +static const struct rf_channel rf_vals_xtal20mhz_3x[] = {
  20 +       {1,    0xE2,     2,  0x14},
  21 +       {2,    0xE3,     2,  0x14},
  22 +       {3,    0xE4,     2,  0x14},
  23 +       {4,    0xE5,     2,  0x14},
  24 +       {5,    0xE6,     2,  0x14},
  25 +       {6,    0xE7,     2,  0x14},
  26 +       {7,    0xE8,     2,  0x14},
  27 +       {8,    0xE9,     2,  0x14},
  28 +       {9,    0xEA,     2,  0x14},
  29 +       {10,   0xEB,     2,  0x14},
  30 +       {11,   0xEC,     2,  0x14},
  31 +       {12,   0xED,     2,  0x14},
  32 +       {13,   0xEE,     2,  0x14},
  33 +       {14,   0xF0,     2,  0x18},
  34 +};
  35 +
  36  static int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
  37  {
  38         struct hw_mode_spec *spec = &rt2x00dev->spec;
  39 @@ -8273,7 +8295,10 @@ static int rt2800_probe_hw_mode(struct r
  40         case RF5390:
  41         case RF5392:
  42                 spec->num_channels = 14;
  43 -               spec->channels = rf_vals_3x;
  44 +               if (spec->clk_is_20mhz)
  45 +                       spec->channels = rf_vals_xtal20mhz_3x;
  46 +               else
  47 +                       spec->channels = rf_vals_3x;
  48                 break;
  49
  50         case RF3052:
  51 @@ -8457,6 +8482,20 @@ static int rt2800_probe_rt(struct rt2x00
  52         return 0;
  53  }
  54
  55 +int rt2800_probe_clk(struct rt2x00_dev *rt2x00dev)
  56 +{
  57 +       struct hw_mode_spec *spec = &rt2x00dev->spec;
  58 +       struct clk *clk = clk_get(rt2x00dev->dev, NULL);
  59 +
  60 +       if (IS_ERR(clk))
  61 +               return PTR_ERR(clk);
  62 +
  63 +       if (clk_get_rate(clk) == 20000000)
  64 +               spec->clk_is_20mhz = 1;
  65 +
  66 +       return 0;
  67 +}
  68 +
  69  int rt2800_probe_hw(struct rt2x00_dev *rt2x00dev)
  70  {
  71         struct rt2800_drv_data *drv_data = rt2x00dev->drv_data;
  72 @@ -8499,6 +8538,15 @@ int rt2800_probe_hw(struct rt2x00_dev *r
  73         rt2800_register_write(rt2x00dev, GPIO_CTRL, reg);
  74
  75         /*
  76 +        * Probe SoC clock.
  77 +        */
  78 +       if (rt2x00_is_soc(rt2x00dev)) {
  79 +               retval = rt2800_probe_clk(rt2x00dev);
  80 +               if (retval)
  81 +                       return retval;
  82 +       }
  83 +
  84 +       /*
  85          * Initialize hw specifications.
  86          */
  87         retval = rt2800_probe_hw_mode(rt2x00dev);
  88 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
  89 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
  90 @@ -401,6 +401,7 @@ static inline struct rt2x00_intf* vif_to
  91   * @channels: Device/chipset specific channel values (See &struct rf_channel).
  92   * @channels_info: Additional information for channels (See &struct channel_info).
  93   * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
  94 + * @clk_is_20mhz: External crystal of WiSoC is 20MHz instead of 40MHz
  95   */
  96  struct hw_mode_spec {
  97         unsigned int supported_bands;
  98 @@ -417,6 +418,7 @@ struct hw_mode_spec {
  99         const struct channel_info *channels_info;
 100
 101         struct ieee80211_sta_ht_cap ht;
 102 +       int clk_is_20mhz;
 103  };
 104
 105  /*