From 9dbeb91a8b97e2892c04461e28d2bdd0198b719d Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Wed, 14 Jan 2009 20:17:08 +0100 Subject: 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 Signed-off-by: Imre Kaloz Tested-by: Pavel Roskin Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/pci.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'drivers/net/wireless/ath9k/pci.c') diff --git a/drivers/net/wireless/ath9k/pci.c b/drivers/net/wireless/ath9k/pci.c index 4ff1caa9ba9..05612bf2836 100644 --- a/drivers/net/wireless/ath9k/pci.c +++ b/drivers/net/wireless/ath9k/pci.c @@ -58,9 +58,27 @@ static void ath_pci_cleanup(struct ath_softc *sc) pci_disable_device(pdev); } +static bool ath_pci_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 struct ath_bus_ops ath_pci_bus_ops = { .read_cachesize = ath_pci_read_cachesize, .cleanup = ath_pci_cleanup, + .eeprom_read = ath_pci_eeprom_read, }; static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) -- cgit v1.2.3-70-g09d2