diff options
| author | Gabor Juhos | 2009-01-14 20:17:08 +0100 |
|---|---|---|
| committer | John W. Linville | 2009-01-29 22:00:33 +0100 |
| commit | 9dbeb91a8b97e2892c04461e28d2bdd0198b719d (patch) | |
| tree | 3ac42d298b739da86a991ed2bd53aa12377cb956 /drivers/net/wireless/ath9k/pci.c | |
| parent | ath9k: introduce platform driver for AHB bus support (diff) | |
| download | kernel-qcow2-linux-9dbeb91a8b97e2892c04461e28d2bdd0198b719d.tar.gz kernel-qcow2-linux-9dbeb91a8b97e2892c04461e28d2bdd0198b719d.tar.xz kernel-qcow2-linux-9dbeb91a8b97e2892c04461e28d2bdd0198b719d.zip | |
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>
Diffstat (limited to 'drivers/net/wireless/ath9k/pci.c')
| -rw-r--r-- | drivers/net/wireless/ath9k/pci.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath9k/pci.c b/drivers/net/wireless/ath9k/pci.c index 4ff1caa9ba99..05612bf28360 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) |