iio: common: nvs: Fix threshold high attribute.

- Fix the old value on a threshold high attribute write.
- Simplify ALS calibation by entering just the calibrated values at runtime.
  This is opposed to also having to enter uncalibrated values and only via
  the device tree.
- Add ability to modify interpolation (calibrated and uncalibrated) values at
  runtime.

Bug 1671144

Change-Id: I6a9b132d306a64f1fca3161f3520e6677d5f647b
Signed-off-by: Erik Lilliebjerg <elilliebjerg@nvidia.com>
Reviewed-on: http://git-master/r/777749
(cherry picked from commit 93077f4b94531b8aeae93eb7db892e9c8420f012)
Reviewed-on: http://git-master/r/781168
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Robert Collins <rcollins@nvidia.com>
Tested-by: Robert Collins <rcollins@nvidia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/nvs_light.h b/include/linux/nvs_light.h
index 9d04fea25..dc5d67218 100644
--- a/include/linux/nvs_light.h
+++ b/include/linux/nvs_light.h
@@ -114,6 +114,8 @@ int nvs_light_read(struct nvs_light *nl);
 int nvs_light_enable(struct nvs_light *nl);
 int nvs_light_of_dt(struct nvs_light *nl, const struct device_node *np,
                     const char *dev_name);
+void nvs_light_threshold_calibrate_lo(struct nvs_light *nl, int lo);
+void nvs_light_threshold_calibrate_hi(struct nvs_light *nl, int hi);
 ssize_t nvs_light_dbg(struct nvs_light *nl, char *buf);
 
 #endif /* _NVS_LIGHT_H_ */