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interconnect: Add get_bw() callback

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The interconnect controller hardware may support querying the current
bandwidth settings, so add a callback for providers to implement this
functionality if supported.

Link: https://lore.kernel.org/r/20200825170152.6434-2-georgi.djakov@linaro.org
Reviewed-by: Saravana Kannan <saravanak@google.com>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
This commit is contained in:
Georgi Djakov 2020-08-25 20:01:50 +03:00
parent 91e045b93d
commit cc80d10d6f
1 changed files with 2 additions and 0 deletions
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2
include/linux/interconnect-provider.h
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@ -38,6 +38,7 @@ struct icc_node *of_icc_xlate_onecell(struct of_phandle_args *spec,
* @aggregate: pointer to device specific aggregate operation function
* @pre_aggregate: pointer to device specific function that is called
* before the aggregation begins (optional)
* @get_bw: pointer to device specific function to get current bandwidth
* @xlate: provider-specific callback for mapping nodes from phandle arguments
* @dev: the device this interconnect provider belongs to
* @users: count of active users
@ -51,6 +52,7 @@ struct icc_provider {
int (*aggregate)(struct icc_node *node, u32 tag, u32 avg_bw,
u32 peak_bw, u32 *agg_avg, u32 *agg_peak);
void (*pre_aggregate)(struct icc_node *node);
int (*get_bw)(struct icc_node *node, u32 *avg, u32 *peak);
struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data);
struct device *dev;
int users;