^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/interconnect-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * of_icc_bulk_get() - get interconnect paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * @dev: the device requesting the path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * @num_paths: the number of icc_bulk_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * @paths: the table with the paths we want to get
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Returns 0 on success or negative errno otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) int __must_check of_icc_bulk_get(struct device *dev, int num_paths,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct icc_bulk_data *paths)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) for (i = 0; i < num_paths; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) paths[i].path = of_icc_get(dev, paths[i].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) if (IS_ERR(paths[i].path)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) ret = PTR_ERR(paths[i].path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) if (ret != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) dev_err(dev, "of_icc_get() failed on path %s (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) paths[i].name, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) paths[i].path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) icc_bulk_put(i, paths);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) EXPORT_SYMBOL_GPL(of_icc_bulk_get);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * icc_bulk_put() - put a list of interconnect paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * @num_paths: the number of icc_bulk_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * @paths: the icc_bulk_data table with the paths being put
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) void icc_bulk_put(int num_paths, struct icc_bulk_data *paths)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) while (--num_paths >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) icc_put(paths[num_paths].path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) paths[num_paths].path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) EXPORT_SYMBOL_GPL(icc_bulk_put);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * icc_bulk_set() - set bandwidth to a set of paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * @num_paths: the number of icc_bulk_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * @paths: the icc_bulk_data table containing the paths and bandwidth
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * Returns 0 on success or negative errno otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) for (i = 0; i < num_paths; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) ret = icc_set_bw(paths[i].path, paths[i].avg_bw, paths[i].peak_bw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) pr_err("icc_set_bw() failed on path %s (%d)\n", paths[i].name, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) EXPORT_SYMBOL_GPL(icc_bulk_set_bw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * icc_bulk_enable() - enable a previously disabled set of paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * @num_paths: the number of icc_bulk_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * @paths: the icc_bulk_data table containing the paths and bandwidth
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * Returns 0 on success or negative errno otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) for (i = 0; i < num_paths; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ret = icc_enable(paths[i].path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) pr_err("icc_enable() failed on path %s (%d)\n", paths[i].name, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) icc_bulk_disable(i, paths);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) EXPORT_SYMBOL_GPL(icc_bulk_enable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * icc_bulk_disable() - disable a set of interconnect paths
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * @num_paths: the number of icc_bulk_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) * @paths: the icc_bulk_data table containing the paths and bandwidth
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) while (--num_paths >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) icc_disable(paths[num_paths].path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) EXPORT_SYMBOL_GPL(icc_bulk_disable);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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