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authorEduardo Valentin <eduardo.valentin@ti.com>2013-07-03 15:35:39 -0400
committerEduardo Valentin <eduardo.valentin@ti.com>2013-12-04 09:31:34 -0400
commit4e5e4705bf69ea450f58fc709ac5888f321a9299 (patch)
tree523e7c5a3f5459acdd5b81d81b0deeb68de79dc0 /drivers/thermal/Kconfig
parent81bd4e1cebed5efb85bd94a15342ee4d6965a416 (diff)
downloadop-kernel-dev-4e5e4705bf69ea450f58fc709ac5888f321a9299.zip
op-kernel-dev-4e5e4705bf69ea450f58fc709ac5888f321a9299.tar.gz
thermal: introduce device tree parser
This patch introduces a device tree bindings for describing the hardware thermal behavior and limits. Also a parser to read and interpret the data and feed it in the thermal framework is presented. This patch introduces a thermal data parser for device tree. The parsed data is used to build thermal zones and thermal binding parameters. The output data can then be used to deploy thermal policies. This patch adds also documentation regarding this API and how to define tree nodes to use this infrastructure. Note that, in order to be able to have control on the sensor registration on the DT thermal zone, it was required to allow changing the thermal zone .get_temp callback. For this reason, this patch also removes the 'const' modifier from the .ops field of thermal zone devices. Cc: Zhang Rui <rui.zhang@intel.com> Cc: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Diffstat (limited to 'drivers/thermal/Kconfig')
-rw-r--r--drivers/thermal/Kconfig13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index f35a1f7..a150f8d 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -29,6 +29,19 @@ config THERMAL_HWMON
Say 'Y' here if you want all thermal sensors to
have hwmon sysfs interface too.
+config THERMAL_OF
+ bool
+ prompt "APIs to parse thermal data out of device tree"
+ depends on OF
+ default y
+ help
+ This options provides helpers to add the support to
+ read and parse thermal data definitions out of the
+ device tree blob.
+
+ Say 'Y' here if you need to build thermal infrastructure
+ based on device tree.
+
choice
prompt "Default Thermal governor"
default THERMAL_DEFAULT_GOV_STEP_WISE
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