diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/pci.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/pci.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath5k/pci.c b/drivers/net/wireless/ath/ath5k/pci.c index 9f7d3ca..3f26cf2 100644 --- a/drivers/net/wireless/ath/ath5k/pci.c +++ b/drivers/net/wireless/ath/ath5k/pci.c @@ -65,10 +65,46 @@ static void ath5k_pci_read_cachesize(struct ath_common *common, int *csz) *csz = L1_CACHE_BYTES >> 2; /* Use the default size */ } +/* + * Read from eeprom + */ +bool ath5k_pci_eeprom_read(struct ath_common *common, u32 offset, u16 *data) +{ + struct ath5k_hw *ah = (struct ath5k_hw *) common->ah; + u32 status, timeout; + + /* + * Initialize EEPROM access + */ + if (ah->ah_version == AR5K_AR5210) { + AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_EEAE); + (void)ath5k_hw_reg_read(ah, AR5K_EEPROM_BASE + (4 * offset)); + } else { + ath5k_hw_reg_write(ah, offset, AR5K_EEPROM_BASE); + AR5K_REG_ENABLE_BITS(ah, AR5K_EEPROM_CMD, + AR5K_EEPROM_CMD_READ); + } + + for (timeout = AR5K_TUNE_REGISTER_TIMEOUT; timeout > 0; timeout--) { + status = ath5k_hw_reg_read(ah, AR5K_EEPROM_STATUS); + if (status & AR5K_EEPROM_STAT_RDDONE) { + if (status & AR5K_EEPROM_STAT_RDERR) + return -EIO; + *data = (u16)(ath5k_hw_reg_read(ah, AR5K_EEPROM_DATA) & + 0xffff); + return 0; + } + udelay(15); + } + + return -ETIMEDOUT; +} + /* Common ath_bus_opts structure */ static const struct ath_bus_ops ath_pci_bus_ops = { .ath_bus_type = ATH_PCI, .read_cachesize = ath5k_pci_read_cachesize, + .eeprom_read = ath5k_pci_eeprom_read, }; /********************\ |
