package/kernel/mac80211/patches/rt2x00/602-04-wifi-rt2x00-Support-EEPROM-swap-binding.patch

   1 From 9c9a3c27b96e057f3c3f47151d7a170d84e3bb5f Mon Sep 17 00:00:00 2001
   2 From: Christian Marangi <ansuelsmth@gmail.com>
   3 Date: Sun, 15 Oct 2023 15:31:47 +0200
   4 Subject: [PATCH 4/5] wifi: rt2x00: Support EEPROM swap binding
   5
   6 Add binding "ralink,eeprom-swap" to swap bytes of EEPROM before using
   7 it.
   8
   9 Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
  10 ---
  11  drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c | 15 +++++++++++++++
  12  1 file changed, 15 insertions(+)
  13
  14 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
  15 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
  16 @@ -20,6 +20,19 @@
  17  #include "rt2x00soc.h"
  18
  19  #if IS_ENABLED(CONFIG_MTD)
  20 +static void rt2800lib_eeprom_swap(struct rt2x00_dev *rt2x00dev)
  21 +{
  22 +       struct device_node *np = rt2x00dev->dev->of_node;
  23 +       size_t len = rt2x00dev->ops->eeprom_size;
  24 +       int i;
  25 +
  26 +       if (!of_find_property(np, "ralink,eeprom-swap", NULL))
  27 +               return;
  28 +
  29 +       for (i = 0; i < len / sizeof(u16); i++)
  30 +               rt2x00dev->eeprom[i] = swab16(rt2x00dev->eeprom[i]);
  31 +}
  32 +
  33  static int rt2800lib_read_eeprom_mtd(struct rt2x00_dev *rt2x00dev)
  34  {
  35         int ret = -EINVAL;
  36 @@ -66,6 +79,8 @@ static int rt2800lib_read_eeprom_mtd(str
  37                 return ret;
  38         }
  39
  40 +       rt2800lib_eeprom_swap(rt2x00dev);
  41 +
  42         dev_info(rt2x00dev->dev, "loaded eeprom from mtd device \"%s\"\n", part);
  43  #endif
  44