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OPP: Add dev_pm_opp_add_dynamic() to allow more flexibility

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The dev_pm_opp_add() API is limited to add dynamic OPPs with a frequency
and a voltage level. To enable more flexibility, let's add a new API,
dev_pm_opp_add_dynamic() that's takes a struct dev_pm_opp_data* instead of
a list of in-parameters.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Ulf Hansson 2023-09-25 15:17:09 +02:00 committed by Viresh Kumar
parent 401e09201a
commit 248a38d5cc
4 changed files with 42 additions and 21 deletions
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22
drivers/opp/core.c
View File

@ -2002,8 +2002,7 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
* _opp_add_v1() - Allocate a OPP based on v1 bindings.
* @opp_table: OPP table
* @dev: device for which we do this operation
* @freq: Frequency in Hz for this OPP
* @u_volt: Voltage in uVolts for this OPP
* @data: The OPP data for the OPP to add
* @dynamic: Dynamically added OPPs.
*
* This function adds an opp definition to the opp table and returns status.
@ -2021,10 +2020,10 @@ int _opp_add(struct device *dev, struct dev_pm_opp *new_opp,
* -ENOMEM Memory allocation failure
*/
int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
unsigned long freq, long u_volt, bool dynamic)
struct dev_pm_opp_data *data, bool dynamic)
{
struct dev_pm_opp *new_opp;
unsigned long tol;
unsigned long tol, u_volt = data->u_volt;
int ret;
if (!assert_single_clk(opp_table))
@ -2035,7 +2034,7 @@ int _opp_add_v1(struct opp_table *opp_table, struct device *dev,
return -ENOMEM;
/* populate the opp table */
new_opp->rates[0] = freq;
new_opp->rates[0] = data->freq;
tol = u_volt * opp_table->voltage_tolerance_v1 / 100;
new_opp->supplies[0].u_volt = u_volt;
new_opp->supplies[0].u_volt_min = u_volt - tol;
@ -2825,10 +2824,9 @@ unlock:
}
/**
* dev_pm_opp_add() - Add an OPP table from a table definitions
* @dev: device for which we do this operation
* @freq: Frequency in Hz for this OPP
* @u_volt: Voltage in uVolts for this OPP
* dev_pm_opp_add_dynamic() - Add an OPP table from a table definitions
* @dev: The device for which we do this operation
* @data: The OPP data for the OPP to add
*
* This function adds an opp definition to the opp table and returns status.
* The opp is made available by default and it can be controlled using
@ -2841,7 +2839,7 @@ unlock:
* Duplicate OPPs (both freq and volt are same) and !opp->available
* -ENOMEM Memory allocation failure
*/
int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
int dev_pm_opp_add_dynamic(struct device *dev, struct dev_pm_opp_data *data)
{
struct opp_table *opp_table;
int ret;
@ -2853,13 +2851,13 @@ int dev_pm_opp_add(struct device *dev, unsigned long freq, unsigned long u_volt)
/* Fix regulator count for dynamic OPPs */
opp_table->regulator_count = 1;
ret = _opp_add_v1(opp_table, dev, freq, u_volt, true);
ret = _opp_add_v1(opp_table, dev, data, true);
if (ret)
dev_pm_opp_put_opp_table(opp_table);
return ret;
}
EXPORT_SYMBOL_GPL(dev_pm_opp_add);
EXPORT_SYMBOL_GPL(dev_pm_opp_add_dynamic);
/**
* _opp_set_availability() - helper to set the availability of an opp

10
drivers/opp/of.c
View File

@ -1077,13 +1077,15 @@ static int _of_add_opp_table_v1(struct device *dev, struct opp_table *opp_table)
val = prop->value;
while (nr) {
unsigned long freq = be32_to_cpup(val++) * 1000;
unsigned long volt = be32_to_cpup(val++);
struct dev_pm_opp_data data = {
.freq = be32_to_cpup(val++) * 1000,
.u_volt = be32_to_cpup(val++),
};
ret = _opp_add_v1(opp_table, dev, freq, volt, false);
ret = _opp_add_v1(opp_table, dev, &data, false);
if (ret) {
dev_err(dev, "%s: Failed to add OPP %ld (%d)\n",
__func__, freq, ret);
__func__, data.freq, ret);
goto remove_static_opp;
}
nr -= 2;

2
drivers/opp/opp.h
View File

@ -251,7 +251,7 @@ struct dev_pm_opp *_opp_allocate(struct opp_table *opp_table);
void _opp_free(struct dev_pm_opp *opp);
int _opp_compare_key(struct opp_table *opp_table, struct dev_pm_opp *opp1, struct dev_pm_opp *opp2);
int _opp_add(struct device *dev, struct dev_pm_opp *new_opp, struct opp_table *opp_table);
int _opp_add_v1(struct opp_table *opp_table, struct device *dev, unsigned long freq, long u_volt, bool dynamic);
int _opp_add_v1(struct opp_table *opp_table, struct device *dev, struct dev_pm_opp_data *data, bool dynamic);
void _dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask, int last_cpu);
struct opp_table *_add_opp_table_indexed(struct device *dev, int index, bool getclk);
void _put_opp_list_kref(struct opp_table *opp_table);

29
include/linux/pm_opp.h
View File

@ -92,6 +92,16 @@ struct dev_pm_opp_config {
struct device ***virt_devs;
};
/**
* struct dev_pm_opp_data - The data to use to initialize an OPP.
* @freq: The clock rate in Hz for the OPP.
* @u_volt: The voltage in uV for the OPP.
*/
struct dev_pm_opp_data {
unsigned long freq;
unsigned long u_volt;
};
#if defined(CONFIG_PM_OPP)
struct opp_table *dev_pm_opp_get_opp_table(struct device *dev);
@ -152,8 +162,8 @@ struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
void dev_pm_opp_put(struct dev_pm_opp *opp);
int dev_pm_opp_add(struct device *dev, unsigned long freq,
unsigned long u_volt);
int dev_pm_opp_add_dynamic(struct device *dev, struct dev_pm_opp_data *opp);
void dev_pm_opp_remove(struct device *dev, unsigned long freq);
void dev_pm_opp_remove_all_dynamic(struct device *dev);
@ -322,8 +332,8 @@ static inline struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev,
static inline void dev_pm_opp_put(struct dev_pm_opp *opp) {}
static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
unsigned long u_volt)
static inline int
dev_pm_opp_add_dynamic(struct device *dev, struct dev_pm_opp_data *opp)
{
return -EOPNOTSUPP;
}
@ -519,6 +529,17 @@ static inline int dev_pm_opp_of_find_icc_paths(struct device *dev, struct opp_ta
/* OPP Configuration helpers */
static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
unsigned long u_volt)
{
struct dev_pm_opp_data data = {
.freq = freq,
.u_volt = u_volt,
};
return dev_pm_opp_add_dynamic(dev, &data);
}
/* Regulators helpers */
static inline int dev_pm_opp_set_regulators(struct device *dev,
const char * const names[])