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interconnect: Add bulk API helpers

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There are drivers which just need to get multiple interconnect paths,
request some predefined amounts of bandwidth and then just toggle the
paths between enabled/disabled state.

The aim of this patch is simplify the above and to allow drivers to put
all the path names and bandwidth data into a single static icc_bulk_data
table and call the icc_bulk_* functions on that table in order to scale
all the interconnect paths in parallel.

Suggested-by: Evan Green <evgreen@chromium.org>
Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200729123439.9961-1-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
This commit is contained in:
Georgi Djakov 2020-07-29 15:34:39 +03:00
parent 91e045b93d
commit b41b0ce598
3 changed files with 140 additions and 1 deletions
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22
include/linux/interconnect.h
View file

@ -23,6 +23,28 @@
struct icc_path;
struct device;
/**
* struct icc_bulk_data - Data used for bulk icc operations.
*
* @path: reference to the interconnect path (internal use)
* @name: the name from the "interconnect-names" DT property
* @avg_bw: average bandwidth in icc units
* @peak_bw: peak bandwidth in icc units
*/
struct icc_bulk_data {
struct icc_path *path;
const char *name;
u32 avg_bw;
u32 peak_bw;
};
int __must_check of_icc_bulk_get(struct device *dev, int num_paths,
struct icc_bulk_data *paths);
void icc_bulk_put(int num_paths, struct icc_bulk_data *paths);
int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths);
int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths);
void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths);
#if IS_ENABLED(CONFIG_INTERCONNECT)
struct icc_path *icc_get(struct device *dev, const int src_id,