TSENS does not operate reliably during VDD_CX minimization.
Incorrect temperature readings are reported on some instances
when Apps processor comes out of suspend. This leads the
TSENS reporting incorrect temperature during system resume.
Change-Id: I882b37fbe290477926c3a242d3092be8b950dfab
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[davidb: only drivers/thermal]
Signed-off-by: David Brown <davidb@codeaurora.org>
MDM9615 has identical configuration for the number
of sensors and slope with MSM8960. Add support to
enable the TSENS for calibrated parts.
Change-Id: Ieb1f118ce916ab5a4f079b18b11541d86c3a5560
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[davidb: only drivers/thermal]
Signed-off-by: David Brown <davidb@codeaurora.org>
TSENS is used by the thermal daemon for thermal management.
On APQ8064 there are 11 TSENS sensors that can be used by the
thermal daemon to monitor the temperature across the chip.
TSENS for APQ8064 supports individual slope for each of the
sensors. The offset used in the temperature from each of the
slope is used for temperature calcuation from the ADC code.
Change-Id: I00457aff8d67ab3367882ffe1077af863b90bc49
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
Add kernel API to read TSENS temperature for clients
in the kernel space. Currently the TSENS driver only
supports reading the TSENS temperature from the
thermal sys.
Split the TSENS initialization into two parts.
First is to perform the initial calibration that is
used to convert the raw ADC code to Degrees Celcius
and initialize the TSENS HW. Second is to register the
TSENS driver to the linux thermal framework and create
the temperature zones that will be accessed by the
Thermal daemon to set thresholds, read the temperature
and receive notifications.
Change-Id: Id2305a7aa755e1e9cfaecd8b5c1870ed05d9b5e9
Signed-off-by: Praveen Chidambaram <pchidamb@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
TSENS V2 supports reading from multiple sensors and
notifiying clients when the lower/upper thresholds
are reached. The lower/upper threshold use the last
sensors threshold that are set through the thermal sysfs.
TSENS HW is enabled only when the main sensor is requested.
The TSENS block is disabled if the main senors is disabled
irrespective of any other sensors that are being enabled.
When TSENS receives notification on temperature threshold
being reached, it checks and sends events to the sensors
that are enabled and whose thresholds are above the upper
or below the lower thresholds set in the tsens threshold
register.
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
