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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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3.8 kB · 159 lines
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160// SPDX-License-Identifier: GPL-2.0
#include <linux/interconnect-provider.h>#include <linux/device.h>#include <linux/export.h>
/** * of_icc_bulk_get() - get interconnect paths * @dev: the device requesting the path * @num_paths: the number of icc_bulk_data * @paths: the table with the paths we want to get * * Returns 0 on success or negative errno otherwise. */int __must_check of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths){ int ret, i;
for (i = 0; i < num_paths; i++) { paths[i].path = of_icc_get(dev, paths[i].name); if (IS_ERR(paths[i].path)) { ret = PTR_ERR(paths[i].path); if (ret != -EPROBE_DEFER) dev_err(dev, "of_icc_get() failed on path %s (%d)\n", paths[i].name, ret); paths[i].path = NULL; goto err; } }
return 0;
err: icc_bulk_put(i, paths);
return ret;}EXPORT_SYMBOL_GPL(of_icc_bulk_get);
/** * icc_bulk_put() - put a list of interconnect paths * @num_paths: the number of icc_bulk_data * @paths: the icc_bulk_data table with the paths being put */void icc_bulk_put(int num_paths, struct icc_bulk_data *paths){ while (--num_paths >= 0) { icc_put(paths[num_paths].path); paths[num_paths].path = NULL; }}EXPORT_SYMBOL_GPL(icc_bulk_put);
/** * icc_bulk_set_bw() - set bandwidth to a set of paths * @num_paths: the number of icc_bulk_data * @paths: the icc_bulk_data table containing the paths and bandwidth * * Returns 0 on success or negative errno otherwise. */int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths){ int ret = 0; int i;
for (i = 0; i < num_paths; i++) { ret = icc_set_bw(paths[i].path, paths[i].avg_bw, paths[i].peak_bw); if (ret) { pr_err("icc_set_bw() failed on path %s (%d)\n", paths[i].name, ret); return ret; } }
return ret;}EXPORT_SYMBOL_GPL(icc_bulk_set_bw);
/** * icc_bulk_enable() - enable a previously disabled set of paths * @num_paths: the number of icc_bulk_data * @paths: the icc_bulk_data table containing the paths and bandwidth * * Returns 0 on success or negative errno otherwise. */int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths){ int ret, i;
for (i = 0; i < num_paths; i++) { ret = icc_enable(paths[i].path); if (ret) { pr_err("icc_enable() failed on path %s (%d)\n", paths[i].name, ret); goto err; } }
return 0;
err: icc_bulk_disable(i, paths);
return ret;}EXPORT_SYMBOL_GPL(icc_bulk_enable);
/** * icc_bulk_disable() - disable a set of interconnect paths * @num_paths: the number of icc_bulk_data * @paths: the icc_bulk_data table containing the paths and bandwidth */void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths){ while (--num_paths >= 0) icc_disable(paths[num_paths].path);}EXPORT_SYMBOL_GPL(icc_bulk_disable);
struct icc_bulk_devres { struct icc_bulk_data *paths; int num_paths;};
static void devm_icc_bulk_release(struct device *dev, void *res){ struct icc_bulk_devres *devres = res;
icc_bulk_put(devres->num_paths, devres->paths);}
/** * devm_of_icc_bulk_get() - resource managed of_icc_bulk_get * @dev: the device requesting the path * @num_paths: the number of icc_bulk_data * @paths: the table with the paths we want to get * * Returns 0 on success or negative errno otherwise. */int devm_of_icc_bulk_get(struct device *dev, int num_paths, struct icc_bulk_data *paths){ struct icc_bulk_devres *devres; int ret;
devres = devres_alloc(devm_icc_bulk_release, sizeof(*devres), GFP_KERNEL); if (!devres) return -ENOMEM;
ret = of_icc_bulk_get(dev, num_paths, paths); if (!ret) { devres->paths = paths; devres->num_paths = num_paths; devres_add(dev, devres); } else { devres_free(devres); }
return ret;}EXPORT_SYMBOL_GPL(devm_of_icc_bulk_get);