mac80211: rt2x00: improve EEPROM load patches

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

diff --git a/package/kernel/mac80211/patches/rt2x00/602-04-wifi-rt2x00-Support-EEPROM-swap-binding.patch b/package/kernel/mac80211/patches/rt2x00/602-04-wifi-rt2x00-Support-EEPROM-swap-binding.patch
new file mode 100644 (file)
index 0000000..392910d
--- /dev/null
+++ b/package/kernel/mac80211/patches/rt2x00/602-04-wifi-rt2x00-Support-EEPROM-swap-binding.patch
@@ -0,0 +1,44 @@
+From 9c9a3c27b96e057f3c3f47151d7a170d84e3bb5f Mon Sep 17 00:00:00 2001
+From: Christian Marangi <ansuelsmth@gmail.com>
+Date: Sun, 15 Oct 2023 15:31:47 +0200
+Subject: [PATCH 4/5] wifi: rt2x00: Support EEPROM swap binding
+
+Add binding "ralink,eeprom-swap" to swap bytes of EEPROM before using
+it.
+
+Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
+---
+ drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c | 15 +++++++++++++++
+ 1 file changed, 15 insertions(+)
+
+--- a/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00eeprom.c
+@@ -20,6 +20,19 @@
+ #include "rt2x00soc.h"
+ 
+ #if IS_ENABLED(CONFIG_MTD)
++static void rt2800lib_eeprom_swap(struct rt2x00_dev *rt2x00dev)
++{
++      struct device_node *np = rt2x00dev->dev->of_node;
++      size_t len = rt2x00dev->ops->eeprom_size;
++      int i;
++
++      if (!of_find_property(np, "ralink,eeprom-swap", NULL))
++              return;
++
++      for (i = 0; i < len / sizeof(u16); i++)
++              rt2x00dev->eeprom[i] = swab16(rt2x00dev->eeprom[i]);
++}
++
+ static int rt2800lib_read_eeprom_mtd(struct rt2x00_dev *rt2x00dev)
+ {
+       int ret = -EINVAL;
+@@ -66,6 +79,8 @@ static int rt2800lib_read_eeprom_mtd(str
+               return ret;
+       }
+ 
++      rt2800lib_eeprom_swap(rt2x00dev);
++
+       dev_info(rt2x00dev->dev, "loaded eeprom from mtd device \"%s\"\n", part);
+ #endif
+