--- a/drivers/net/wireless/ath/ath9k/debug.c +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -1585,6 +1585,53 @@ static const struct file_operations fops }; +static ssize_t read_file_eeprom(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath_softc *sc = file->private_data; + struct ath_hw *ah = sc->sc_ah; + struct ath_common *common = ath9k_hw_common(ah); + int bytes = 0; + int pos = *ppos; + int size = 4096; + u16 val; + int i; + + if (AR_SREV_9300_20_OR_LATER(ah)) + size = 16384; + + if (*ppos < 0) + return -EINVAL; + + if (count > size - *ppos) + count = size - *ppos; + + for (i = *ppos / 2; count > 0; count -= bytes, *ppos += bytes, i++) { + void *from = &val; + + if (!common->bus_ops->eeprom_read(common, i, &val)) + val = 0xffff; + + if (*ppos % 2) { + from++; + bytes = 1; + } else if (count == 1) { + bytes = 1; + } else { + bytes = 2; + } + copy_to_user(user_buf, from, bytes); + user_buf += bytes; + } + return *ppos - pos; +} + +static const struct file_operations fops_eeprom = { + .read = read_file_eeprom, + .open = ath9k_debugfs_open, + .owner = THIS_MODULE +}; + int ath9k_init_debug(struct ath_hw *ah) { struct ath_common *common = ath9k_hw_common(ah); @@ -1643,6 +1690,9 @@ int ath9k_init_debug(struct ath_hw *ah) debugfs_create_u32("gpio_val", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, &sc->sc_ah->gpio_val); + debugfs_create_file("eeprom", S_IRUSR, sc->debug.debugfs_phy, sc, + &fops_eeprom); + sc->debug.regidx = 0; memset(&sc->debug.bb_mac_samp, 0, sizeof(sc->debug.bb_mac_samp)); sc->debug.sampidx = 0;