diff options
| author | Christian Lamparter <chunkeey@gmail.com> | 2021-09-13 15:40:35 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2021-09-16 11:07:41 +0300 |
| commit | eb3a97a69be83ea961bf4a164c54e1c989a57850 (patch) | |
| tree | 131094e75bd6c6091a312ff1754c2bfd2945a681 /drivers/net/wireless/ath/ath9k/eeprom.c | |
| parent | 6880fa6c56601bb8ed59df6c30fd390cc5f6dd8f (diff) | |
ath9k: fetch calibration data via nvmem subsystem
On most embedded ath9k devices (like range extenders,
routers, accesspoints, ...) the calibration data is
stored in a MTD partitions named "ART", or "caldata"/
"calibration".
Since commit 4b361cfa8624 ("mtd: core: add OTP nvmem provider support"):
All MTD partitions are all automatically available through
the nvmem subsystem.
This feature - together with an nvmem cell definition either
in the platform data or via device-tree allows drivers to get
the data necessary for initializing the WIFI, without having
to wait around for the filesystem and userspace to do
the extractions.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/f9b732b50a3453fadf3923cc75d365bae3505fe7.1630157099.git.chunkeey@gmail.com
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/eeprom.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/eeprom.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/eeprom.c b/drivers/net/wireless/ath/ath9k/eeprom.c index c22d457dbc54..e6b3cd49ea18 100644 --- a/drivers/net/wireless/ath/ath9k/eeprom.c +++ b/drivers/net/wireless/ath/ath9k/eeprom.c @@ -135,13 +135,23 @@ static bool ath9k_hw_nvram_read_firmware(const struct firmware *eeprom_blob, offset, data); } +static bool ath9k_hw_nvram_read_nvmem(struct ath_hw *ah, off_t offset, + u16 *data) +{ + return ath9k_hw_nvram_read_array(ah->nvmem_blob, + ah->nvmem_blob_len / sizeof(u16), + offset, data); +} + bool ath9k_hw_nvram_read(struct ath_hw *ah, u32 off, u16 *data) { struct ath_common *common = ath9k_hw_common(ah); struct ath9k_platform_data *pdata = ah->dev->platform_data; bool ret; - if (ah->eeprom_blob) + if (ah->nvmem_blob) + ret = ath9k_hw_nvram_read_nvmem(ah, off, data); + else if (ah->eeprom_blob) ret = ath9k_hw_nvram_read_firmware(ah->eeprom_blob, off, data); else if (pdata && !pdata->use_eeprom) ret = ath9k_hw_nvram_read_pdata(pdata, off, data); |