[PATCH v2 0/9] cpufreq: Add flag to auto-register as cooling

[PATCH v2 0/9] cpufreq: Add flag to auto-register as cooling

[Amit Kucheria]

Add a flag to be used by cpufreq drivers to tell cpufreq core to
auto-register themselves as a thermal cooling device.

There series converts over all the drivers except arm_big_little.c.
Tested on SDM845 with the qcom-cpufreq-hw driver. Only compile-tested the
others.

Things needing fixing (but not a blocker for the series):
 - Look at how to detect that we're not in IKS mode in arm_big_little's
   .ready callback.

Changes since v1:
- Fix compilation failures with allmodconfig
- Get rid of #ifdef in cpufreq.c
- Removed miscellaneous patches and sent them separately
- Merged patches 1 and 2 from v1

Amit Kucheria (9):
  thermal: cpu_cooling: Require thermal core to be compiled in
  cpufreq: Auto-register the driver as a thermal cooling device if asked
  cpufreq: qcom-hw: Register as a cpufreq cooling device
  cpufreq: imx6q: Use auto-registration of thermal cooling device
  cpufreq: cpufreq-dt: Use auto-registration of thermal cooling device
  cpufreq: mediatek: Use auto-registration of thermal cooling device
  cpufreq: qoriq: Use auto-registration of thermal cooling device
  cpufreq: scmi: Use auto-registration of thermal cooling device
  cpufreq: scpi: Use auto-registration of thermal cooling device

 drivers/cpufreq/cpufreq-dt.c       | 14 ++------------
 drivers/cpufreq/cpufreq.c          |  6 ++++++
 drivers/cpufreq/imx6q-cpufreq.c    | 24 ++----------------------
 drivers/cpufreq/mediatek-cpufreq.c | 14 ++------------
 drivers/cpufreq/qcom-cpufreq-hw.c  |  3 ++-
 drivers/cpufreq/qoriq-cpufreq.c    | 15 ++-------------
 drivers/cpufreq/scmi-cpufreq.c     | 14 ++------------
 drivers/cpufreq/scpi-cpufreq.c     | 14 ++------------
 drivers/thermal/Kconfig            |  1 +
 include/linux/cpufreq.h            | 25 +++++++++++++++++++++++++
 10 files changed, 46 insertions(+), 84 deletions(-)

-- 
2.17.1

[PATCH v2 6/9] cpufreq: mediatek: Use auto-registration of thermal cooling device

[Amit Kucheria]

Use the CPUFREQ_AUTO_REGISTER_COOLING_DEV flag to allow cpufreq core to
automatically register as a thermal cooling device.

This allows removal of boiler plate code from the driver.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
---
 drivers/cpufreq/mediatek-cpufreq.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index eb8920d39818..9a937f4c63e7 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -14,7 +14,6 @@
 
 #include <linux/clk.h>
 #include <linux/cpu.h>
-#include <linux/cpu_cooling.h>
 #include <linux/cpufreq.h>
 #include <linux/cpumask.h>
 #include <linux/module.h>
@@ -48,7 +47,6 @@ struct mtk_cpu_dvfs_info {
 	struct regulator *sram_reg;
 	struct clk *cpu_clk;
 	struct clk *inter_clk;
-	struct thermal_cooling_device *cdev;
 	struct list_head list_head;
 	int intermediate_voltage;
 	bool need_voltage_tracking;
@@ -307,13 +305,6 @@ static int mtk_cpufreq_set_target(struct cpufreq_policy *policy,
 
 #define DYNAMIC_POWER "dynamic-power-coefficient"
 
-static void mtk_cpufreq_ready(struct cpufreq_policy *policy)
-{
-	struct mtk_cpu_dvfs_info *info = policy->driver_data;
-
-	info->cdev = of_cpufreq_cooling_register(policy);
-}
-
 static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
 {
 	struct device *cpu_dev;
@@ -472,7 +463,6 @@ static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
 {
 	struct mtk_cpu_dvfs_info *info = policy->driver_data;
 
-	cpufreq_cooling_unregister(info->cdev);
 	dev_pm_opp_free_cpufreq_table(info->cpu_dev, &policy->freq_table);
 
 	return 0;
@@ -480,13 +470,13 @@ static int mtk_cpufreq_exit(struct cpufreq_policy *policy)
 
 static struct cpufreq_driver mtk_cpufreq_driver = {
 	.flags = CPUFREQ_STICKY | CPUFREQ_NEED_INITIAL_FREQ_CHECK |
-		 CPUFREQ_HAVE_GOVERNOR_PER_POLICY,
+		 CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
+		 CPUFREQ_AUTO_REGISTER_COOLING_DEV,
 	.verify = cpufreq_generic_frequency_table_verify,
 	.target_index = mtk_cpufreq_set_target,
 	.get = cpufreq_generic_get,
 	.init = mtk_cpufreq_init,
 	.exit = mtk_cpufreq_exit,
-	.ready = mtk_cpufreq_ready,
 	.name = "mtk-cpufreq",
 	.attr = cpufreq_generic_attr,
 };
-- 
2.17.1