ath10k: retrieve calibration data from file
A frequent request have been to be able to provide calibration data from a
file as some of the AP devices store the calibration data on an MTD partition.
This patchset adds support for that and also makes it easier to add Device Tree
support later on.
The calibration data is found by using the id string provided by dev_name()
using this format:
cal-<bus>-<id>.bin
With PCI the id string contains bus, slot and func values. For example for a
PCI device in bus 2 slot 0, ath10k will try to retrieve a calibration data from
a file:
/lib/firmware/ath10k/cal-pci-0000:02:00.0.bin
The calibration data sequence is:
1. Check with request_firmware() if there's a calibration file
("cal-<bus>-<id>.bin") on the filesystem for this device. If yes, use that. If
not, goto 2
2. Check if otp.bin is able to successfully load the calibration data
from OTP. If yes, use that. If not, goto 3.
4. Print an error message that no calibration data found and stop driver
initialization for this device.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 770b0bc..2c286e7 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -387,6 +387,23 @@
ATH10K_FLAG_CORE_REGISTERED,
};
+enum ath10k_cal_mode {
+ ATH10K_CAL_MODE_FILE,
+ ATH10K_CAL_MODE_OTP,
+};
+
+static inline const char *ath10k_cal_mode_str(enum ath10k_cal_mode mode)
+{
+ switch (mode) {
+ case ATH10K_CAL_MODE_FILE:
+ return "file";
+ case ATH10K_CAL_MODE_OTP:
+ return "otp";
+ }
+
+ return "unknown";
+}
+
enum ath10k_scan_state {
ATH10K_SCAN_IDLE,
ATH10K_SCAN_STARTING,
@@ -473,7 +490,10 @@
const void *firmware_data;
size_t firmware_len;
+ const struct firmware *cal_file;
+
int fw_api;
+ enum ath10k_cal_mode cal_mode;
struct {
struct completion started;