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Merge branches 'clk-tegra' and 'clk-bulk-get-all' into clk-next

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- Nvidia Tegra clk driver MBIST workaround fix
  - clk_bulk_get_all() API and friends to get all the clks for a device

* clk-tegra:
  clk: tegra210: Include size.h for compilation ease
  clk: tegra: Fixes for MBIST work around
  clk: tegra: probe deferral error reporting

* clk-bulk-get-all:
  clk: add managed version of clk_bulk_get_all
  clk: add new APIs to operate on all available clocks
  clk: bulk: add of_clk_bulk_get()
This commit is contained in:
Stephen Boyd
2018-10-18 15:43:38 -07:00
parent 19ef24654f c8da78e8a1 f08c2e2865
commit c1f74dbe59
5 changed files with 178 additions and 6 deletions
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65
include/linux/clk.h
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@@ -312,7 +312,26 @@ struct clk *clk_get(struct device *dev, const char *id);
*/
int __must_check clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks);
/**
* clk_bulk_get_all - lookup and obtain all available references to clock
* producer.
* @dev: device for clock "consumer"
* @clks: pointer to the clk_bulk_data table of consumer
*
* This helper function allows drivers to get all clk consumers in one
* operation. If any of the clk cannot be acquired then any clks
* that were obtained will be freed before returning to the caller.
*
* Returns a positive value for the number of clocks obtained while the
* clock references are stored in the clk_bulk_data table in @clks field.
* Returns 0 if there're none and a negative value if something failed.
*
* Drivers must assume that the clock source is not enabled.
*
* clk_bulk_get should not be called from within interrupt context.
*/
int __must_check clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks);
/**
* devm_clk_bulk_get - managed get multiple clk consumers
* @dev: device for clock "consumer"
@@ -327,6 +346,22 @@ int __must_check clk_bulk_get(struct device *dev, int num_clks,
*/
int __must_check devm_clk_bulk_get(struct device *dev, int num_clks,
struct clk_bulk_data *clks);
/**
* devm_clk_bulk_get_all - managed get multiple clk consumers
* @dev: device for clock "consumer"
* @clks: pointer to the clk_bulk_data table of consumer
*
* Returns a positive value for the number of clocks obtained while the
* clock references are stored in the clk_bulk_data table in @clks field.
* Returns 0 if there're none and a negative value if something failed.
*
* This helper function allows drivers to get several clk
* consumers in one operation with management, the clks will
* automatically be freed when the device is unbound.
*/
int __must_check devm_clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks);
/**
* devm_clk_get - lookup and obtain a managed reference to a clock producer.
@@ -487,6 +522,19 @@ void clk_put(struct clk *clk);
*/
void clk_bulk_put(int num_clks, struct clk_bulk_data *clks);
/**
* clk_bulk_put_all - "free" all the clock source
* @num_clks: the number of clk_bulk_data
* @clks: the clk_bulk_data table of consumer
*
* Note: drivers must ensure that all clk_bulk_enable calls made on this
* clock source are balanced by clk_bulk_disable calls prior to calling
* this function.
*
* clk_bulk_put_all should not be called from within interrupt context.
*/
void clk_bulk_put_all(int num_clks, struct clk_bulk_data *clks);
/**
* devm_clk_put - "free" a managed clock source
* @dev: device used to acquire the clock
@@ -659,6 +707,12 @@ static inline int __must_check clk_bulk_get(struct device *dev, int num_clks,
return 0;
}
static inline int __must_check clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks)
{
return 0;
}
static inline struct clk *devm_clk_get(struct device *dev, const char *id)
{
return NULL;
@@ -670,6 +724,13 @@ static inline int __must_check devm_clk_bulk_get(struct device *dev, int num_clk
return 0;
}
static inline int __must_check devm_clk_bulk_get_all(struct device *dev,
struct clk_bulk_data **clks)
{
return 0;
}
static inline struct clk *devm_get_clk_from_child(struct device *dev,
struct device_node *np, const char *con_id)
{
@@ -680,6 +741,8 @@ static inline void clk_put(struct clk *clk) {}
static inline void clk_bulk_put(int num_clks, struct clk_bulk_data *clks) {}
static inline void clk_bulk_put_all(int num_clks, struct clk_bulk_data *clks) {}
static inline void devm_clk_put(struct device *dev, struct clk *clk) {}