From 00ce3873f730fb24c657854ec04374358e711838 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 4 May 2022 10:17:32 +0200 Subject: opp: Add apis to retrieve opps with interconnect bandwidth Add dev_pm_opp_find_bw_ceil and dev_pm_opp_find_bw_floor to retrieve opps based on interconnect associated with the opp and bandwidth. The index variable is the index of the interconnect as specified in the opp table in Devicetree. Co-developed-by: Thara Gopinath Signed-off-by: Thara Gopinath Signed-off-by: Krzysztof Kozlowski Signed-off-by: Viresh Kumar --- include/linux/pm_opp.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/linux') diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 0d85a63a1f78..dcea178868c9 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -129,6 +129,13 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev, struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, unsigned long *freq); + +struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev, + unsigned int *bw, int index); + +struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev, + unsigned int *bw, int index); + void dev_pm_opp_put(struct dev_pm_opp *opp); int dev_pm_opp_add(struct device *dev, unsigned long freq, @@ -279,6 +286,18 @@ static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, return ERR_PTR(-EOPNOTSUPP); } +static inline struct dev_pm_opp *dev_pm_opp_find_bw_ceil(struct device *dev, + unsigned int *bw, int index) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +static inline struct dev_pm_opp *dev_pm_opp_find_bw_floor(struct device *dev, + unsigned int *bw, int index) +{ + return ERR_PTR(-EOPNOTSUPP); +} + 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, -- cgit v1.2.3 From 22079af7df5a5dfef1c4d160abfd43035211759e Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Wed, 4 May 2022 15:40:22 +0530 Subject: opp: Reorder definition of ceil/floor helpers Reorder the helpers to keep all freq specific ones, followed by level and bw. No functional change. Signed-off-by: Viresh Kumar --- drivers/opp/core.c | 194 ++++++++++++++++++++++++------------------------- include/linux/pm_opp.h | 22 +++--- 2 files changed, 108 insertions(+), 108 deletions(-) (limited to 'include/linux') diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 48606f52759d..84063eaebb91 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -456,103 +456,6 @@ struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_exact); -/** - * dev_pm_opp_find_level_exact() - search for an exact level - * @dev: device for which we do this operation - * @level: level to search for - * - * Return: Searches for exact match in the opp table and returns pointer to the - * matching opp if found, else returns ERR_PTR in case of error and should - * be handled using IS_ERR. Error return values can be: - * EINVAL: for bad pointer - * ERANGE: no match found for search - * ENODEV: if device not found in list of registered devices - * - * The callers are required to call dev_pm_opp_put() for the returned OPP after - * use. - */ -struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, - unsigned int level) -{ - struct opp_table *opp_table; - struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); - - opp_table = _find_opp_table(dev); - if (IS_ERR(opp_table)) { - int r = PTR_ERR(opp_table); - - dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r); - return ERR_PTR(r); - } - - mutex_lock(&opp_table->lock); - - list_for_each_entry(temp_opp, &opp_table->opp_list, node) { - if (temp_opp->level == level) { - opp = temp_opp; - - /* Increment the reference count of OPP */ - dev_pm_opp_get(opp); - break; - } - } - - mutex_unlock(&opp_table->lock); - dev_pm_opp_put_opp_table(opp_table); - - return opp; -} -EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact); - -/** - * dev_pm_opp_find_level_ceil() - search for an rounded up level - * @dev: device for which we do this operation - * @level: level to search for - * - * Return: Searches for rounded up match in the opp table and returns pointer - * to the matching opp if found, else returns ERR_PTR in case of error and - * should be handled using IS_ERR. Error return values can be: - * EINVAL: for bad pointer - * ERANGE: no match found for search - * ENODEV: if device not found in list of registered devices - * - * The callers are required to call dev_pm_opp_put() for the returned OPP after - * use. - */ -struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, - unsigned int *level) -{ - struct opp_table *opp_table; - struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); - - opp_table = _find_opp_table(dev); - if (IS_ERR(opp_table)) { - int r = PTR_ERR(opp_table); - - dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r); - return ERR_PTR(r); - } - - mutex_lock(&opp_table->lock); - - list_for_each_entry(temp_opp, &opp_table->opp_list, node) { - if (temp_opp->available && temp_opp->level >= *level) { - opp = temp_opp; - *level = opp->level; - - /* Increment the reference count of OPP */ - dev_pm_opp_get(opp); - break; - } - } - - mutex_unlock(&opp_table->lock); - dev_pm_opp_put_opp_table(opp_table); - - return opp; -} -EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil); - static noinline struct dev_pm_opp *_find_freq_ceil(struct opp_table *opp_table, unsigned long *freq) { @@ -729,6 +632,103 @@ struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev, } EXPORT_SYMBOL_GPL(dev_pm_opp_find_freq_ceil_by_volt); +/** + * dev_pm_opp_find_level_exact() - search for an exact level + * @dev: device for which we do this operation + * @level: level to search for + * + * Return: Searches for exact match in the opp table and returns pointer to the + * matching opp if found, else returns ERR_PTR in case of error and should + * be handled using IS_ERR. Error return values can be: + * EINVAL: for bad pointer + * ERANGE: no match found for search + * ENODEV: if device not found in list of registered devices + * + * The callers are required to call dev_pm_opp_put() for the returned OPP after + * use. + */ +struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, + unsigned int level) +{ + struct opp_table *opp_table; + struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); + + opp_table = _find_opp_table(dev); + if (IS_ERR(opp_table)) { + int r = PTR_ERR(opp_table); + + dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r); + return ERR_PTR(r); + } + + mutex_lock(&opp_table->lock); + + list_for_each_entry(temp_opp, &opp_table->opp_list, node) { + if (temp_opp->level == level) { + opp = temp_opp; + + /* Increment the reference count of OPP */ + dev_pm_opp_get(opp); + break; + } + } + + mutex_unlock(&opp_table->lock); + dev_pm_opp_put_opp_table(opp_table); + + return opp; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_exact); + +/** + * dev_pm_opp_find_level_ceil() - search for an rounded up level + * @dev: device for which we do this operation + * @level: level to search for + * + * Return: Searches for rounded up match in the opp table and returns pointer + * to the matching opp if found, else returns ERR_PTR in case of error and + * should be handled using IS_ERR. Error return values can be: + * EINVAL: for bad pointer + * ERANGE: no match found for search + * ENODEV: if device not found in list of registered devices + * + * The callers are required to call dev_pm_opp_put() for the returned OPP after + * use. + */ +struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, + unsigned int *level) +{ + struct opp_table *opp_table; + struct dev_pm_opp *temp_opp, *opp = ERR_PTR(-ERANGE); + + opp_table = _find_opp_table(dev); + if (IS_ERR(opp_table)) { + int r = PTR_ERR(opp_table); + + dev_err(dev, "%s: OPP table not found (%d)\n", __func__, r); + return ERR_PTR(r); + } + + mutex_lock(&opp_table->lock); + + list_for_each_entry(temp_opp, &opp_table->opp_list, node) { + if (temp_opp->available && temp_opp->level >= *level) { + opp = temp_opp; + *level = opp->level; + + /* Increment the reference count of OPP */ + dev_pm_opp_get(opp); + break; + } + } + + mutex_unlock(&opp_table->lock); + dev_pm_opp_put_opp_table(opp_table); + + return opp; +} +EXPORT_SYMBOL_GPL(dev_pm_opp_find_level_ceil); + /** * dev_pm_opp_find_bw_ceil() - Search for a rounded ceil bandwidth * @dev: device for which we do this operation diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index dcea178868c9..6708b4ec244d 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -117,16 +117,16 @@ unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev); struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, unsigned long freq, bool available); -struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, - unsigned int level); -struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, - unsigned int *level); - struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, unsigned long *freq); struct dev_pm_opp *dev_pm_opp_find_freq_ceil_by_volt(struct device *dev, unsigned long u_volt); +struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, + unsigned int level); +struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, + unsigned int *level); + struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev, unsigned long *freq); @@ -250,12 +250,6 @@ static inline unsigned long dev_pm_opp_get_suspend_opp_freq(struct device *dev) return 0; } -static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, - unsigned long freq, bool available) -{ - return ERR_PTR(-EOPNOTSUPP); -} - static inline struct dev_pm_opp *dev_pm_opp_find_level_exact(struct device *dev, unsigned int level) { @@ -268,6 +262,12 @@ static inline struct dev_pm_opp *dev_pm_opp_find_level_ceil(struct device *dev, return ERR_PTR(-EOPNOTSUPP); } +static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev, + unsigned long freq, bool available) +{ + return ERR_PTR(-EOPNOTSUPP); +} + static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev, unsigned long *freq) { -- cgit v1.2.3