From 59ecf97ec41c07d35ad8fe4bacd3845d806c2744 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Tue, 27 Mar 2012 13:21:53 +0000
Subject: [PATCH] ath9k: make endian check optional

Turns out it triggers on some AR71xx devices where no swapping should be done.
Enable endian check for the lantiq target.

SVN-Revision: 31084
---
 .../patches/501-ath9k-eeprom_endianess.patch  | 58 ++++++++++++++++++-
 .../files/include/linux/ath9k_platform.h      |  1 +
 .../arch/mips/lantiq/xway/dev-wifi-athxk.c    |  1 +
 3 files changed, 58 insertions(+), 2 deletions(-)

diff --git a/package/mac80211/patches/501-ath9k-eeprom_endianess.patch b/package/mac80211/patches/501-ath9k-eeprom_endianess.patch
index 25d5450a79..3d74cac022 100644
--- a/package/mac80211/patches/501-ath9k-eeprom_endianess.patch
+++ b/package/mac80211/patches/501-ath9k-eeprom_endianess.patch
@@ -9,7 +9,7 @@
  	u32 sum = 0, el;
  	bool need_swap = false;
  	int i, addr, size;
-@@ -277,27 +277,15 @@ static int ath9k_hw_def_check_eeprom(str
+@@ -277,27 +277,16 @@ static int ath9k_hw_def_check_eeprom(str
  		return false;
  	}
  
@@ -34,7 +34,8 @@
 -					"Invalid EEPROM Magic. Endianness mismatch.\n");
 -				return -EINVAL;
 -			}
-+	if (swab16(magic) == AR5416_EEPROM_MAGIC) {
++	if (swab16(magic) == AR5416_EEPROM_MAGIC &&
++	    !(ah->ah_flags & AH_NO_EEP_SWAP)) {
 +		size = sizeof(struct ar5416_eeprom_def);
 +		need_swap = true;
 +		eepdata = (u16 *) (&ah->eeprom);
@@ -46,3 +47,56 @@
  		}
  	}
  
+--- a/drivers/net/wireless/ath/ath9k/eeprom_4k.c
++++ b/drivers/net/wireless/ath/ath9k/eeprom_4k.c
+@@ -196,7 +196,7 @@ static int ath9k_hw_4k_check_eeprom(stru
+ 	int i, addr;
+ 
+ 
+-	if (!ath9k_hw_use_flash(ah)) {
++	if (!(ah->ah_flags & AH_NO_EEP_SWAP)) {
+ 		if (!ath9k_hw_nvram_read(common, AR5416_EEPROM_MAGIC_OFFSET,
+ 					 &magic)) {
+ 			ath_err(common, "Reading Magic # failed\n");
+--- a/drivers/net/wireless/ath/ath9k/eeprom_9287.c
++++ b/drivers/net/wireless/ath/ath9k/eeprom_9287.c
+@@ -189,7 +189,7 @@ static int ath9k_hw_ar9287_check_eeprom(
+ 	struct ar9287_eeprom *eep = &ah->eeprom.map9287;
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 
+-	if (!ath9k_hw_use_flash(ah)) {
++	if (!(ah->ah_flags & AH_NO_EEP_SWAP)) {
+ 		if (!ath9k_hw_nvram_read(common, AR5416_EEPROM_MAGIC_OFFSET,
+ 					 &magic)) {
+ 			ath_err(common, "Reading Magic # failed\n");
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -662,6 +662,7 @@ enum ath_cal_list {
+ #define AH_USE_EEPROM   0x1
+ #define AH_UNPLUGGED    0x2 /* The card has been physically removed. */
+ #define AH_FASTCC       0x4
++#define AH_NO_EEP_SWAP  0x8 /* Do not swap EEPROM data */
+ 
+ struct ath_hw {
+ 	struct ath_ops reg_ops;
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -537,6 +537,8 @@ static int ath9k_init_softc(u16 devid, s
+ 		ah->is_clk_25mhz = pdata->is_clk_25mhz;
+ 		ah->get_mac_revision = pdata->get_mac_revision;
+ 		ah->external_reset = pdata->external_reset;
++		if (!pdata->endian_check)
++			ah->ah_flags |= AH_NO_EEP_SWAP;
+ 	}
+ 
+ 	common = ath9k_hw_common(ah);
+--- a/include/linux/ath9k_platform.h
++++ b/include/linux/ath9k_platform.h
+@@ -29,6 +29,7 @@ struct ath9k_platform_data {
+ 	u32 gpio_mask;
+ 	u32 gpio_val;
+ 
++	bool endian_check;
+ 	bool is_clk_25mhz;
+ 	int (*get_mac_revision)(void);
+ 	int (*external_reset)(void);
diff --git a/target/linux/generic/files/include/linux/ath9k_platform.h b/target/linux/generic/files/include/linux/ath9k_platform.h
index b37d23d834..15b913730f 100644
--- a/target/linux/generic/files/include/linux/ath9k_platform.h
+++ b/target/linux/generic/files/include/linux/ath9k_platform.h
@@ -29,6 +29,7 @@ struct ath9k_platform_data {
 	u32 gpio_mask;
 	u32 gpio_val;
 
+	bool endian_check;
 	bool is_clk_25mhz;
 	int (*get_mac_revision)(void);
 	int (*external_reset)(void);
diff --git a/target/linux/lantiq/files-3.2/arch/mips/lantiq/xway/dev-wifi-athxk.c b/target/linux/lantiq/files-3.2/arch/mips/lantiq/xway/dev-wifi-athxk.c
index 882cd8cf70..a75abe3e00 100644
--- a/target/linux/lantiq/files-3.2/arch/mips/lantiq/xway/dev-wifi-athxk.c
+++ b/target/linux/lantiq/files-3.2/arch/mips/lantiq/xway/dev-wifi-athxk.c
@@ -19,6 +19,7 @@ extern int (*ltqpci_plat_dev_init)(struct pci_dev *dev);
 struct ath5k_platform_data ath5k_pdata;
 struct ath9k_platform_data ath9k_pdata = {
 	.led_pin = -1,
+	.endian_check = true,
 };
 
 static int
-- 
2.30.2