PM / devfreq: Move governor.h to a public header location

Some device drivers (and out-of-tree modules) might want to define
device-specific device governors. Rather than restricting all of them to
be a part of drivers/devfreq/ (which is not possible for out-of-tree
drivers anyway) move governor.h to include/linux/devfreq-governor.h and
update all drivers to use it.

The devfreq_cpu_data is only used internally, by the passive governor,
so it is moved to the driver source rather than being a part of the
public interface.

Reported-by: Robie Basak <robibasa@qti.qualcomm.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20251030-governor-public-v2-1-432a11a9975a@oss.qualcomm.com/

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 2e8d01d47f6996a634a8ad5ddf20c5a68d1a299d..00979f2e0e276a05ee073dcf5cd8e930bdd539fb 100644 (file)
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -20,6 +20,7 @@
 #include <linux/stat.h>
 #include <linux/pm_opp.h>
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/workqueue.h>
 #include <linux/platform_device.h>
 #include <linux/list.h>
@@ -28,7 +29,6 @@
 #include <linux/of.h>
 #include <linux/pm_qos.h>
 #include <linux/units.h>
-#include "governor.h"
 
 #define CREATE_TRACE_POINTS
 #include <trace/events/devfreq.h>

diff --git a/drivers/devfreq/governor_passive.c b/drivers/devfreq/governor_passive.c
index 953cf9a1e9f7f93804cc889db38883bf97ae005d..8cd6f9a59f6422ccd138ff4b264dc8a547ad574f 100644 (file)
--- a/drivers/devfreq/governor_passive.c
+++ b/drivers/devfreq/governor_passive.c
@@ -14,8 +14,33 @@
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/units.h>
-#include "governor.h"
+
+/**
+ * struct devfreq_cpu_data - Hold the per-cpu data
+ * @node:      list node
+ * @dev:       reference to cpu device.
+ * @first_cpu: the cpumask of the first cpu of a policy.
+ * @opp_table: reference to cpu opp table.
+ * @cur_freq:  the current frequency of the cpu.
+ * @min_freq:  the min frequency of the cpu.
+ * @max_freq:  the max frequency of the cpu.
+ *
+ * This structure stores the required cpu_data of a cpu.
+ * This is auto-populated by the governor.
+ */
+struct devfreq_cpu_data {
+       struct list_head node;
+
+       struct device *dev;
+       unsigned int first_cpu;
+
+       struct opp_table *opp_table;
+       unsigned int cur_freq;
+       unsigned int min_freq;
+       unsigned int max_freq;
+};
 
 static struct devfreq_cpu_data *
 get_parent_cpu_data(struct devfreq_passive_data *p_data,

diff --git a/drivers/devfreq/governor_performance.c b/drivers/devfreq/governor_performance.c
index 2e4e981446fa8ea39f65b09dddff198c0b8e3338..fdb22bf512cf134d75f1eaf3edb80e562dd28bec 100644 (file)
--- a/drivers/devfreq/governor_performance.c
+++ b/drivers/devfreq/governor_performance.c
@@ -7,8 +7,8 @@
  */
 
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/module.h>
-#include "governor.h"
 
 static int devfreq_performance_func(struct devfreq *df,
                                    unsigned long *freq)

diff --git a/drivers/devfreq/governor_powersave.c b/drivers/devfreq/governor_powersave.c
index f059e881480465b051f27d740348adaf779aebf0..ee2d6ec8a512248f070b2c5bee8146320b7be312 100644 (file)
--- a/drivers/devfreq/governor_powersave.c
+++ b/drivers/devfreq/governor_powersave.c
@@ -7,8 +7,8 @@
  */
 
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/module.h>
-#include "governor.h"
 
 static int devfreq_powersave_func(struct devfreq *df,
                                  unsigned long *freq)

diff --git a/drivers/devfreq/governor_simpleondemand.c b/drivers/devfreq/governor_simpleondemand.c
index c234357363675508c12732a08c1cd26c349039d1..9c69b96df5f97306e9be46aa6bb1d9d2f8e58490 100644 (file)
--- a/drivers/devfreq/governor_simpleondemand.c
+++ b/drivers/devfreq/governor_simpleondemand.c
@@ -9,8 +9,8 @@
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/math64.h>
-#include "governor.h"
 
 /* Default constants for DevFreq-Simple-Ondemand (DFSO) */
 #define DFSO_UPTHRESHOLD       (90)

diff --git a/drivers/devfreq/governor_userspace.c b/drivers/devfreq/governor_userspace.c
index 175de0c0b50e087861313060eab70a35b757fd20..395174f93960d0762456238654f4d356e21cf57c 100644 (file)
--- a/drivers/devfreq/governor_userspace.c
+++ b/drivers/devfreq/governor_userspace.c
@@ -9,11 +9,11 @@
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/kstrtox.h>
 #include <linux/pm.h>
 #include <linux/mutex.h>
 #include <linux/module.h>
-#include "governor.h"
 
 struct userspace_data {
        unsigned long user_frequency;

diff --git a/drivers/devfreq/hisi_uncore_freq.c b/drivers/devfreq/hisi_uncore_freq.c
index 96d1815059e32c4e70a1d3c257655cc6b162f745..b8e4621c57ebc76513e4eba978aa54f2b884e210 100644 (file)
--- a/drivers/devfreq/hisi_uncore_freq.c
+++ b/drivers/devfreq/hisi_uncore_freq.c
@@ -9,6 +9,7 @@
 #include <linux/bits.h>
 #include <linux/cleanup.h>
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/device.h>
 #include <linux/dev_printk.h>
 #include <linux/errno.h>
@@ -26,8 +27,6 @@
 #include <linux/units.h>
 #include <acpi/pcc.h>
 
-#include "governor.h"
-
 struct hisi_uncore_pcc_data {
        u16 status;
        u16 resv;

diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c
index 4a4f0106ab9ddcfb106a1860370cbf8a3579322a..77cbb204087c970c1fec0c1597b1e76c1a11b390 100644 (file)
--- a/drivers/devfreq/tegra30-devfreq.c
+++ b/drivers/devfreq/tegra30-devfreq.c
@@ -9,6 +9,7 @@
 #include <linux/clk.h>
 #include <linux/cpufreq.h>
 #include <linux/devfreq.h>
+#include <linux/devfreq-governor.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/irq.h>
@@ -21,8 +22,6 @@
 
 #include <soc/tegra/fuse.h>
 
-#include "governor.h"
-
 #define ACTMON_GLB_STATUS                                      0x0
 #define ACTMON_GLB_PERIOD_CTRL                                 0x4
 

diff --git a/drivers/devfreq/governor.h b/include/linux/devfreq-governor.h
similarity index 80%
rename from drivers/devfreq/governor.h
rename to include/linux/devfreq-governor.h
index 0adfebc0467a3db39278814fa66d2b1f25d61f7a..dfdd0160a29f35f5608575b07b450cf5157420ff 100644 (file)
--- a/drivers/devfreq/governor.h
+++ b/include/linux/devfreq-governor.h
@@ -5,11 +5,11 @@
  * Copyright (C) 2011 Samsung Electronics
  *     MyungJoo Ham <myungjoo.ham@samsung.com>
  *
- * This header is for devfreq governors in drivers/devfreq/
+ * This header is for devfreq governors
  */
 
-#ifndef _GOVERNOR_H
-#define _GOVERNOR_H
+#ifndef __LINUX_DEVFREQ_DEVFREQ_H__
+#define __LINUX_DEVFREQ_DEVFREQ_H__
 
 #include <linux/devfreq.h>
 
@@ -47,31 +47,6 @@
 #define DEVFREQ_GOV_ATTR_POLLING_INTERVAL              BIT(0)
 #define DEVFREQ_GOV_ATTR_TIMER                         BIT(1)
 
-/**
- * struct devfreq_cpu_data - Hold the per-cpu data
- * @node:      list node
- * @dev:       reference to cpu device.
- * @first_cpu: the cpumask of the first cpu of a policy.
- * @opp_table: reference to cpu opp table.
- * @cur_freq:  the current frequency of the cpu.
- * @min_freq:  the min frequency of the cpu.
- * @max_freq:  the max frequency of the cpu.
- *
- * This structure stores the required cpu_data of a cpu.
- * This is auto-populated by the governor.
- */
-struct devfreq_cpu_data {
-       struct list_head node;
-
-       struct device *dev;
-       unsigned int first_cpu;
-
-       struct opp_table *opp_table;
-       unsigned int cur_freq;
-       unsigned int min_freq;
-       unsigned int max_freq;
-};
-
 /**
  * struct devfreq_governor - Devfreq policy governor
  * @node:              list node - contains registered devfreq governors
@@ -124,4 +99,4 @@ static inline int devfreq_update_stats(struct devfreq *df)
 
        return df->profile->get_dev_status(df->dev.parent, &df->last_status);
 }
-#endif /* _GOVERNOR_H */
+#endif /* __LINUX_DEVFREQ_DEVFREQ_H__ */