diff options
Diffstat (limited to 'package/kernel/mac80211/patches/333-ath9k-add-support-for-endian-swap-of-eeprom-from-pla.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/333-ath9k-add-support-for-endian-swap-of-eeprom-from-pla.patch | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/333-ath9k-add-support-for-endian-swap-of-eeprom-from-pla.patch b/package/kernel/mac80211/patches/333-ath9k-add-support-for-endian-swap-of-eeprom-from-pla.patch new file mode 100644 index 0000000000..df1a710a1c --- /dev/null +++ b/package/kernel/mac80211/patches/333-ath9k-add-support-for-endian-swap-of-eeprom-from-pla.patch @@ -0,0 +1,92 @@ +From: Felix Fietkau <nbd@openwrt.org> +Date: Sat, 18 Oct 2014 18:24:15 +0200 +Subject: [PATCH] ath9k: add support for endian swap of eeprom from + platform data + +On some devices (especially little-endian ones), the flash EEPROM data +has a different endian, which needs to be detected. +Add a flag to the platform data to allow overriding that behavior + +Signed-off-by: Felix Fietkau <nbd@openwrt.org> +--- + +--- a/drivers/net/wireless/ath/ath9k/eeprom_def.c ++++ b/drivers/net/wireless/ath/ath9k/eeprom_def.c +@@ -262,7 +262,7 @@ static int ath9k_hw_def_check_eeprom(str + { + struct ar5416_eeprom_def *eep = &ah->eeprom.def; + struct ath_common *common = ath9k_hw_common(ah); +- u16 *eepdata, temp, magic, magic2; ++ u16 *eepdata, temp, magic; + u32 sum = 0, el; + bool need_swap = false; + int i, addr, size; +@@ -272,27 +272,16 @@ static int ath9k_hw_def_check_eeprom(str + return false; + } + +- if (!ath9k_hw_use_flash(ah)) { +- ath_dbg(common, EEPROM, "Read Magic = 0x%04X\n", magic); +- +- if (magic != AR5416_EEPROM_MAGIC) { +- magic2 = swab16(magic); +- +- if (magic2 == AR5416_EEPROM_MAGIC) { +- size = sizeof(struct ar5416_eeprom_def); +- need_swap = true; +- eepdata = (u16 *) (&ah->eeprom); +- +- for (addr = 0; addr < size / sizeof(u16); addr++) { +- temp = swab16(*eepdata); +- *eepdata = temp; +- eepdata++; +- } +- } else { +- ath_err(common, +- "Invalid EEPROM Magic. Endianness mismatch.\n"); +- return -EINVAL; +- } ++ 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); ++ ++ for (addr = 0; addr < size / sizeof(u16); addr++) { ++ temp = swab16(*eepdata); ++ *eepdata = temp; ++ eepdata++; + } + } + +--- a/drivers/net/wireless/ath/ath9k/hw.h ++++ b/drivers/net/wireless/ath/ath9k/hw.h +@@ -731,6 +731,7 @@ 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 +@@ -531,6 +531,8 @@ 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->ops = &ah->reg_ops; +--- a/include/linux/ath9k_platform.h ++++ b/include/linux/ath9k_platform.h +@@ -31,6 +31,7 @@ struct ath9k_platform_data { + u32 gpio_mask; + u32 gpio_val; + ++ bool endian_check; + bool is_clk_25mhz; + bool tx_gain_buffalo; + |