From: Sudeep Holla sudeep.holla@arm.com
[ Upstream commit 430daaf96ad133be5ce7c3a5c60e94247f7c6f71 ]
As per the SCMI specification the bitfields for SENSOR_DESC attributes are as follows: attributes_low [7:0] Number of trip points supported attributes_high [15:11] The power-of-10 multiplier in 2's-complement format that is applied to the sensor units
Looks like the code developed during the draft versions of the specification slipped through and are wrong with respect to final released version. Fix them by adjusting the bitfields appropriately.
Fixes: 5179c523c1ea ("firmware: arm_scmi: add initial support for sensor protocol") Reviewed-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: Sudeep Holla sudeep.holla@arm.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/firmware/arm_scmi/sensors.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c index b53d5cc9c9f6..c00287b5f2c2 100644 --- a/drivers/firmware/arm_scmi/sensors.c +++ b/drivers/firmware/arm_scmi/sensors.c @@ -30,10 +30,10 @@ struct scmi_msg_resp_sensor_description { __le32 id; __le32 attributes_low; #define SUPPORTS_ASYNC_READ(x) ((x) & BIT(31)) -#define NUM_TRIP_POINTS(x) (((x) >> 4) & 0xff) +#define NUM_TRIP_POINTS(x) ((x) & 0xff) __le32 attributes_high; #define SENSOR_TYPE(x) ((x) & 0xff) -#define SENSOR_SCALE(x) (((x) >> 11) & 0x3f) +#define SENSOR_SCALE(x) (((x) >> 11) & 0x1f) #define SENSOR_UPDATE_SCALE(x) (((x) >> 22) & 0x1f) #define SENSOR_UPDATE_BASE(x) (((x) >> 27) & 0x1f) u8 name[SCMI_MAX_STR_SIZE];