ath9k: get EEPROM contents from platform data on AHB bus

On the AR913x SOCs we have to provide EEPROM contents via platform_data,
because accessing the flash via MMIO is not safe. Additionally different
boards may store the radio calibration data at different locations.

Changes-licensed-under: ISC

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Tested-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 48 deletions

diff --git a/drivers/net/wireless/ath9k/eeprom.c b/drivers/net/wireless/ath9k/eeprom.c
index 1ef8b5a70e5b..50cb3883416a 100644
--- a/drivers/net/wireless/ath9k/eeprom.c
+++ b/drivers/net/wireless/ath9k/eeprom.c
@@ -91,53 +91,11 @@ static inline bool ath9k_hw_get_lower_upper_index(u8 target, u8 *pList,
         return false;
 }
 
-static bool ath9k_hw_eeprom_read(struct ath_hal *ah, u32 off, u16 *data)
-{
-        (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
-
-        if (!ath9k_hw_wait(ah,
-                           AR_EEPROM_STATUS_DATA,
-                           AR_EEPROM_STATUS_DATA_BUSY |
-                           AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0)) {
-                return false;
-        }
-
-        *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
-                   AR_EEPROM_STATUS_DATA_VAL);
-
-        return true;
-}
-
-static int ath9k_hw_flash_map(struct ath_hal *ah)
-{
-        struct ath_hal_5416 *ahp = AH5416(ah);
-
-        ahp->ah_cal_mem = ioremap(AR5416_EEPROM_START_ADDR, AR5416_EEPROM_MAX);
-
-        if (!ahp->ah_cal_mem) {
-                DPRINTF(ah->ah_sc, ATH_DBG_EEPROM,
-                        "cannot remap eeprom region \n");
-                return -EIO;
-        }
-
-        return 0;
-}
-
-static bool ath9k_hw_flash_read(struct ath_hal *ah, u32 off, u16 *data)
-{
-        struct ath_hal_5416 *ahp = AH5416(ah);
-
-        *data = ioread16(ahp->ah_cal_mem + off);
-
-        return true;
-}
-
 static inline bool ath9k_hw_nvram_read(struct ath_hal *ah, u32 off, u16 *data)
 {
-        if (ath9k_hw_use_flash(ah))
-                return ath9k_hw_flash_read(ah, off, data);
-        else
-                return ath9k_hw_eeprom_read(ah, off, data);
+        struct ath_softc *sc = ah->ah_sc;
+
+        return sc->bus_ops->eeprom_read(ah, off, data);
 }
 
 static bool ath9k_hw_fill_4k_eeprom(struct ath_hal *ah)
@@ -2825,9 +2783,6 @@ int ath9k_hw_eeprom_attach(struct ath_hal *ah)
         int status;
         struct ath_hal_5416 *ahp = AH5416(ah);
 
-        if (ath9k_hw_use_flash(ah))
-                ath9k_hw_flash_map(ah);
-
         if (AR_SREV_9285(ah))
                 ahp->ah_eep_map = EEP_MAP_4KBITS;
         else