On 11/27/2014 01:59 AM, Bartosz Golaszewski wrote:
The shunt resistance can only be set via platform_data or device tree. This
isn't suitable for devices in which the shunt resistance can change/isn't
known at boot-time.
Add a sysfs attribute that allows to read and set the shunt resistance.
Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
---
drivers/hwmon/ina2xx.c | 62 +++++++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 56 insertions(+), 6 deletions(-)
diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c
index 0a6b60f..341da67 100644
--- a/drivers/hwmon/ina2xx.c
+++ b/drivers/hwmon/ina2xx.c
@@ -51,6 +51,8 @@
#define INA226_ALERT_LIMIT 0x07
#define INA226_DIE_ID 0xFF
+/* shunt resistor sysfs attribute index */
+#define INA2XX_RSHUNT 0x8
After reading the datasheet again ... those defines were meant
to reflect registers, not to create 'dummy' index values for software.
Please rearrange your code to not require such constructs; it is just
confusing for others (including me).
Guenter
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