Commit 447c4e83 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Chanwoo Choi
Browse files

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: default avatarRobie Basak <robibasa@qti.qualcomm.com>
Acked-by: default avatarJon Hunter <jonathanh@nvidia.com>
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: default avatarBjorn Andersson <andersson@kernel.org>
Acked-by: default avatarMyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20251030-governor-public-v2-1-432a11a9975a@oss.qualcomm.com/
parent 6146a0f1

drivers/devfreq/devfreq.c

+1 −1
Original line number Diff line number Diff line
@@ -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>

drivers/devfreq/governor_passive.c

+26 −1
Original line number Diff line number Diff line
@@ -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,

drivers/devfreq/governor_performance.c

+1 −1
Original line number Diff line number Diff line
@@ -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)

drivers/devfreq/governor_powersave.c

+1 −1
Original line number Diff line number Diff line
@@ -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)

drivers/devfreq/governor_simpleondemand.c

+1 −1
Original line number Diff line number Diff line
@@ -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)