1. Introduction Following patches aim to clean up the current implementation of the thermal framework on Exynos devices. The main goal was to use a generic code for reading thermal configuration (of-thermal.c). Due to that redundant exynos_thermal_common.[h|c] files were removed. Around 400 lines of code (LOC) were removed directly by this patch, which is around 20% of the Exynos thermal code base. This work should NOT bring any functional changes to Exynos thermal subsystem. 2. Patch-set structure This series starts with extending current of-thermal.c implementation with exporting information about trip points and support for setting emulated temperature. Those changes were necessary to reuse this code in Exynos. Then the cpu_cooling functionality has been preserved to allow cooling devices by reducing operating frequency. Definition of trip points and cpufreq's cooling properties were moved to device tree. Then the rework of the way in which configuration data is provided to the Exynos thermal subsystem was performed. Now device tree is used for configuration. Patch series end with removing exynos5250/exynos3250 TMU compatibles. Both SoCs have thermal management unit (TMU) compatible with the one first introduced at Exynos4412. 3. Dead code removal Thermal support for some SoCs, previously available in the exynos_tmu_data.c file, was removed since, as of 3.17-rc6, they didn't have TMU bindings. Moreover, support for cpu_cooling devices was preserved only on those SoCs which had available and working cpufreq driver. 4. Testing Test devices: - Exynos4210 - Trats (TMU zone + cpu_cooling) - Exynos4412 - Trats2/Odroid U3 (TMU zone + cpu_cooling) - Exynos5250 - Arndale (TMU zone + cpu_cooling) - Exynos5420 - Arndale-octa (only TMU zones) Unfortunately, I don't posses Exynos5440 for testing. Its functionality has been preserved in the code, but not tested on the hardware. I would be grateful for help in testing. 5. Prerequisites: This work requires following patches developed by Bartlomiej Zolnierkiewicz: 5.1. [PATCH v3] ARM: dts: add CPU nodes for Exynos4 SoCs http://article.gmane.org/gmane.linux.kernel.samsung-soc/37946/match=patch+v3+arm+dts+add+cpu+nodes+exynos4+socs 5.2. First thermal clean up patch set (from patch 1 to 33): [PATCH 00/33] thermal: exynos: convert the driver to use per-SoC type operations http://article.gmane.org/gmane.linux.kernel.samsung-soc/37642/match=patch+00+33+thermal+exynos+convert+driver+use+per+soc+type+operations Lukasz Majewski (21): thermal: of: Extend of-thermal.c to provide number of trip points thermal: of: Extend of-thermal.c to provide check if trip point is enabled thermal: of: Extend of-thermal.c to provide number of non critical trip points thermal: of: Extend current of-thermal.c code to allow setting emulated temp thermal: exynos: cosmetic: Correct comment format thermal: exynos: Provide thermal_exynos.h file to be included in device tree files thermal: dts: trats: Enable TMU on the Exynos4210 trats device thermal: dts: exynos: Adding LD010 regulator node necessary for TMU on Odroid U3 board thermal: dts: Provide bindings and enable TMU at Exynos4x12 devices thermal: cpu_cooling: dts: Define device tree bindings for Exynos cpu cooling functionality thermal: cpu_cooling: Modify exynos thermal code to use device tree for cpu cooling configuration thermal: exynos: dts: Add default definition for the TMU sensor thermal: dts: Default trip points definition for Exynos5420 SoCs thermal: exynos: dts: Define default thermal-zones for Exynos4 thermal: dts: exynos: Trip points and sensor configuration data for Exynos5440 thermal: exynos: dts: Provide device tree bindings identical to one in exynos_tmu_data.c thermal: samsung: core: Exynos TMU rework to use device tree for configuration thermal: exynos: Remove exynos_thermal_common.[c|h] files thermal: exynos: Remove exynos_tmu_data.c file thermal: exynos: Make Exynos5250 TMU compatible with Exynos4412 thermal: exynos: Make Exynos3250 TMU compatible with Exynos4412 arch/arm/boot/dts/exynos4-cpu-thermal.dtsi | 52 +++ arch/arm/boot/dts/exynos4.dtsi | 5 + arch/arm/boot/dts/exynos4210-trats.dts | 19 + arch/arm/boot/dts/exynos4210.dtsi | 28 +- arch/arm/boot/dts/exynos4212.dtsi | 5 +- arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 27 ++ arch/arm/boot/dts/exynos4412-tmu-sensor-conf.dtsi | 24 ++ arch/arm/boot/dts/exynos4412.dtsi | 5 +- arch/arm/boot/dts/exynos4x12.dtsi | 13 + arch/arm/boot/dts/exynos5250.dtsi | 29 +- arch/arm/boot/dts/exynos5420-trip-points.dtsi | 35 ++ arch/arm/boot/dts/exynos5420.dtsi | 33 ++ arch/arm/boot/dts/exynos5440-tmu-sensor-conf.dtsi | 25 ++ arch/arm/boot/dts/exynos5440-trip-points.dtsi | 25 ++ arch/arm/boot/dts/exynos5440.dtsi | 18 + drivers/cpufreq/exynos-cpufreq.c | 23 +- drivers/thermal/of-thermal.c | 52 ++- drivers/thermal/samsung/Makefile | 2 - drivers/thermal/samsung/exynos_thermal_common.c | 430 ---------------------- drivers/thermal/samsung/exynos_thermal_common.h | 106 ------ drivers/thermal/samsung/exynos_tmu.c | 283 +++++++------- drivers/thermal/samsung/exynos_tmu.h | 79 +--- drivers/thermal/samsung/exynos_tmu_data.c | 264 ------------- drivers/thermal/thermal_core.h | 15 + include/dt-bindings/thermal/thermal_exynos.h | 40 ++ include/linux/thermal.h | 6 +- 26 files changed, 623 insertions(+), 1020 deletions(-) create mode 100644 arch/arm/boot/dts/exynos4-cpu-thermal.dtsi create mode 100644 arch/arm/boot/dts/exynos4412-tmu-sensor-conf.dtsi create mode 100644 arch/arm/boot/dts/exynos5420-trip-points.dtsi create mode 100644 arch/arm/boot/dts/exynos5440-tmu-sensor-conf.dtsi create mode 100644 arch/arm/boot/dts/exynos5440-trip-points.dtsi delete mode 100644 drivers/thermal/samsung/exynos_thermal_common.c delete mode 100644 drivers/thermal/samsung/exynos_thermal_common.h delete mode 100644 drivers/thermal/samsung/exynos_tmu_data.c create mode 100644 include/dt-bindings/thermal/thermal_exynos.h -- 2.0.0.rc2 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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