package/kernel/mac80211/patches/903-wl12xx-use-frequency-instead-of-enumerations-for-pdata-clocks.patch

   1 Instead of defining an enumeration with the FW specific values for the
   2 different clock rates, use the actual frequency instead.  Also add a
   3 boolean to specify whether the clock is XTAL or not.
   4
   5 Change all board files to reflect this.
   6
   7 Additionally, this reverts commit 26f45c (ARM: OMAP2+: Legacy support
   8 for wl12xx when booted with devicetree), since this is not be needed
   9 anymore, now that DT support for WiLink is implemented.
  10
  11 Cc: Tony Lindgren <tony@atomide.com>
  12 Cc: Sekhar Nori <nsekhar@ti.com>
  13 Signed-off-by: Luciano Coelho <coelho@ti.com>
  14 Reviewed-by: Felipe Balbi <balbi@ti.com>
  15
  16 --- a/drivers/net/wireless/ti/wl12xx/main.c
  17 +++ b/drivers/net/wireless/ti/wl12xx/main.c
  18 @@ -1711,6 +1711,43 @@ static struct ieee80211_sta_ht_cap wl12x
  19                 },
  20  };
  21
  22 +static const struct wl12xx_clock wl12xx_refclock_table[] = {
  23 +       { 19200000,     false,  WL12XX_REFCLOCK_19      },
  24 +       { 26000000,     false,  WL12XX_REFCLOCK_26      },
  25 +       { 26000000,     true,   WL12XX_REFCLOCK_26_XTAL },
  26 +       { 38400000,     false,  WL12XX_REFCLOCK_38      },
  27 +       { 38400000,     true,   WL12XX_REFCLOCK_38_XTAL },
  28 +       { 52000000,     false,  WL12XX_REFCLOCK_52      },
  29 +       { 0,            false,  0 }
  30 +};
  31 +
  32 +static const struct wl12xx_clock wl12xx_tcxoclock_table[] = {
  33 +       { 16368000,     true,   WL12XX_TCXOCLOCK_16_368 },
  34 +       { 16800000,     true,   WL12XX_TCXOCLOCK_16_8   },
  35 +       { 19200000,     true,   WL12XX_TCXOCLOCK_19_2   },
  36 +       { 26000000,     true,   WL12XX_TCXOCLOCK_26     },
  37 +       { 32736000,     true,   WL12XX_TCXOCLOCK_32_736 },
  38 +       { 33600000,     true,   WL12XX_TCXOCLOCK_33_6   },
  39 +       { 38400000,     true,   WL12XX_TCXOCLOCK_38_4   },
  40 +       { 52000000,     true,   WL12XX_TCXOCLOCK_52     },
  41 +       { 0,            false,  0 }
  42 +};
  43 +
  44 +static int wl12xx_get_clock_idx(const struct wl12xx_clock *table,
  45 +                               u32 freq, bool xtal)
  46 +{
  47 +       int i = 0;
  48 +
  49 +       while(table[i].freq != 0) {
  50 +               if ((table[i].freq == freq) &&
  51 +                   (table[i].xtal == xtal))
  52 +                       return table[i].hw_idx;
  53 +               i++;
  54 +       };
  55 +
  56 +       return -EINVAL;
  57 +}
  58 +
  59  static int wl12xx_setup(struct wl1271 *wl)
  60  {
  61         struct wl12xx_priv *priv = wl->priv;
  62 @@ -1732,7 +1769,16 @@ static int wl12xx_setup(struct wl1271 *w
  63         wl12xx_conf_init(wl);
  64
  65         if (!fref_param) {
  66 -               priv->ref_clock = pdata->board_ref_clock;
  67 +               priv->ref_clock = wl12xx_get_clock_idx(wl12xx_refclock_table,
  68 +                                                      pdata->ref_clock_freq,
  69 +                                                      pdata->ref_clock_xtal);
  70 +               if (priv->ref_clock < 0) {
  71 +                       wl1271_error("Invalid ref_clock frequency (%d Hz, %s)",
  72 +                               pdata->ref_clock_freq,
  73 +                               pdata->ref_clock_xtal ? "XTAL" : "not XTAL");
  74 +
  75 +                       return priv->ref_clock;
  76 +               }
  77         } else {
  78                 if (!strcmp(fref_param, "19.2"))
  79                         priv->ref_clock = WL12XX_REFCLOCK_19;
  80 @@ -1751,7 +1797,15 @@ static int wl12xx_setup(struct wl1271 *w
  81         }
  82
  83         if (!tcxo_param) {
  84 -               priv->tcxo_clock = pdata->board_tcxo_clock;
  85 +               priv->tcxo_clock = wl12xx_get_clock_idx(wl12xx_tcxoclock_table,
  86 +                                                       pdata->tcxo_clock_freq,
  87 +                                                       true);
  88 +               if (priv->tcxo_clock < 0) {
  89 +                       wl1271_error("Invalid tcxo_clock frequency (%d Hz)",
  90 +                               pdata->tcxo_clock_freq);
  91 +
  92 +                       return priv->tcxo_clock;
  93 +               }
  94         } else {
  95                 if (!strcmp(tcxo_param, "19.2"))
  96                         priv->tcxo_clock = WL12XX_TCXOCLOCK_19_2;
  97 --- a/drivers/net/wireless/ti/wl12xx/wl12xx.h
  98 +++ b/drivers/net/wireless/ti/wl12xx/wl12xx.h
  99 @@ -79,4 +79,32 @@ struct wl12xx_priv {
 100         struct wl127x_rx_mem_pool_addr *rx_mem_addr;
 101  };
 102
 103 +/* Reference clock values */
 104 +enum {
 105 +       WL12XX_REFCLOCK_19      = 0, /* 19.2 MHz */
 106 +       WL12XX_REFCLOCK_26      = 1, /* 26 MHz */
 107 +       WL12XX_REFCLOCK_38      = 2, /* 38.4 MHz */
 108 +       WL12XX_REFCLOCK_52      = 3, /* 52 MHz */
 109 +       WL12XX_REFCLOCK_38_XTAL = 4, /* 38.4 MHz, XTAL */
 110 +       WL12XX_REFCLOCK_26_XTAL = 5, /* 26 MHz, XTAL */
 111 +};
 112 +
 113 +/* TCXO clock values */
 114 +enum {
 115 +       WL12XX_TCXOCLOCK_19_2   = 0, /* 19.2MHz */
 116 +       WL12XX_TCXOCLOCK_26     = 1, /* 26 MHz */
 117 +       WL12XX_TCXOCLOCK_38_4   = 2, /* 38.4MHz */
 118 +       WL12XX_TCXOCLOCK_52     = 3, /* 52 MHz */
 119 +       WL12XX_TCXOCLOCK_16_368 = 4, /* 16.368 MHz */
 120 +       WL12XX_TCXOCLOCK_32_736 = 5, /* 32.736 MHz */
 121 +       WL12XX_TCXOCLOCK_16_8   = 6, /* 16.8 MHz */
 122 +       WL12XX_TCXOCLOCK_33_6   = 7, /* 33.6 MHz */
 123 +};
 124 +
 125 +struct wl12xx_clock {
 126 +       u32     freq;
 127 +       bool    xtal;
 128 +       u8      hw_idx;
 129 +};
 130 +
 131  #endif /* __WL12XX_PRIV_H__ */