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117 lines
2.7 KiB
117 lines
2.7 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <linux/interconnect-provider.h> |
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#include <linux/device.h> |
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#include <linux/export.h> |
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/** |
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* of_icc_bulk_get() - get interconnect paths |
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* @dev: the device requesting the path |
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* @num_paths: the number of icc_bulk_data |
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* @paths: the table with the paths we want to get |
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* |
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* Returns 0 on success or negative errno otherwise. |
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*/ |
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int __must_check of_icc_bulk_get(struct device *dev, int num_paths, |
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struct icc_bulk_data *paths) |
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{ |
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int ret, i; |
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for (i = 0; i < num_paths; i++) { |
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paths[i].path = of_icc_get(dev, paths[i].name); |
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if (IS_ERR(paths[i].path)) { |
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ret = PTR_ERR(paths[i].path); |
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if (ret != -EPROBE_DEFER) |
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dev_err(dev, "of_icc_get() failed on path %s (%d)\n", |
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paths[i].name, ret); |
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paths[i].path = NULL; |
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goto err; |
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} |
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} |
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return 0; |
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err: |
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icc_bulk_put(i, paths); |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(of_icc_bulk_get); |
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/** |
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* icc_bulk_put() - put a list of interconnect paths |
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* @num_paths: the number of icc_bulk_data |
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* @paths: the icc_bulk_data table with the paths being put |
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*/ |
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void icc_bulk_put(int num_paths, struct icc_bulk_data *paths) |
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{ |
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while (--num_paths >= 0) { |
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icc_put(paths[num_paths].path); |
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paths[num_paths].path = NULL; |
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} |
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} |
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EXPORT_SYMBOL_GPL(icc_bulk_put); |
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/** |
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* icc_bulk_set_bw() - set bandwidth to a set of paths |
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* @num_paths: the number of icc_bulk_data |
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* @paths: the icc_bulk_data table containing the paths and bandwidth |
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* |
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* Returns 0 on success or negative errno otherwise. |
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*/ |
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int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths) |
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{ |
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int ret = 0; |
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int i; |
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for (i = 0; i < num_paths; i++) { |
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ret = icc_set_bw(paths[i].path, paths[i].avg_bw, paths[i].peak_bw); |
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if (ret) { |
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pr_err("icc_set_bw() failed on path %s (%d)\n", paths[i].name, ret); |
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return ret; |
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} |
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} |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(icc_bulk_set_bw); |
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/** |
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* icc_bulk_enable() - enable a previously disabled set of paths |
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* @num_paths: the number of icc_bulk_data |
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* @paths: the icc_bulk_data table containing the paths and bandwidth |
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* |
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* Returns 0 on success or negative errno otherwise. |
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*/ |
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int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths) |
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{ |
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int ret, i; |
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for (i = 0; i < num_paths; i++) { |
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ret = icc_enable(paths[i].path); |
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if (ret) { |
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pr_err("icc_enable() failed on path %s (%d)\n", paths[i].name, ret); |
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goto err; |
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} |
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} |
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return 0; |
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err: |
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icc_bulk_disable(i, paths); |
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return ret; |
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} |
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EXPORT_SYMBOL_GPL(icc_bulk_enable); |
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/** |
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* icc_bulk_disable() - disable a set of interconnect paths |
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* @num_paths: the number of icc_bulk_data |
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* @paths: the icc_bulk_data table containing the paths and bandwidth |
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*/ |
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void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths) |
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{ |
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while (--num_paths >= 0) |
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icc_disable(paths[num_paths].path); |
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} |
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EXPORT_SYMBOL_GPL(icc_bulk_disable);
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