kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-10 20:48:12 +00:00
Code Issues Releases Packages Activity

thermal/drivers/qcom: add support for PMIC5 Gen3 ADC thermal monitoring

Browse source 
Add support for ADC_TM part of PMIC5 Gen3 in an auxiliary driver
under the Gen3 ADC driver. Its functionality is similar to that of
PMIC5 Gen2 ADC_TM, which implements the threshold setting and
interrupt generating functions, used to support thermal trip points.

In Gen3 ADC, the register interface is implemented on one or more SDAM
(Shared Direct Access Memory) peripherals instead of dedicated ADC
peripherals. Each ADC SDAM has eight channels which can be configured
for either immediate reads (main ADC driver's functionality) or ADC_TM
reads. By convention, the first channel of the first ADC SDAM is reserved
for all immediate reads and remaining channels across all SDAMs are used
for ADC_TM functionality.

On the first SDAM, the interrupt line and configuration registers are
shared between the main ADC and auxiliary ADC_TM drivers. Access to the
registers is protected through a mutex shared between the drivers. The
ADC_TM driver accesses this mutex and some other functions shared from
the main driver (like adc5_gen3_get_scaled_reading() for immediate channel
reads in the .get_temp() callback) through APIs exported into a shared
namespace.

Signed-off-by: Jishnu Prakash <jishnu.prakash@oss.qualcomm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Link: https://patch.msgid.link/20260722-gen3_adc_tm-v4-3-011981f756c8@oss.qualcomm.com
This commit is contained in:
Jishnu Prakash 2026-07-22 16:56:39 +05:30 • committed by Daniel Lezcano
commit 948ee3a74f
No known key found for this signature in database
GPG key ID: A832238A2A4FE84F
2 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files