1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun #include <linux/interconnect-provider.h>
4*4882a593Smuzhiyun #include <linux/device.h>
5*4882a593Smuzhiyun #include <linux/export.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /**
8*4882a593Smuzhiyun * of_icc_bulk_get() - get interconnect paths
9*4882a593Smuzhiyun * @dev: the device requesting the path
10*4882a593Smuzhiyun * @num_paths: the number of icc_bulk_data
11*4882a593Smuzhiyun * @paths: the table with the paths we want to get
12*4882a593Smuzhiyun *
13*4882a593Smuzhiyun * Returns 0 on success or negative errno otherwise.
14*4882a593Smuzhiyun */
of_icc_bulk_get(struct device * dev,int num_paths,struct icc_bulk_data * paths)15*4882a593Smuzhiyun int __must_check of_icc_bulk_get(struct device *dev, int num_paths,
16*4882a593Smuzhiyun struct icc_bulk_data *paths)
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun int ret, i;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun for (i = 0; i < num_paths; i++) {
21*4882a593Smuzhiyun paths[i].path = of_icc_get(dev, paths[i].name);
22*4882a593Smuzhiyun if (IS_ERR(paths[i].path)) {
23*4882a593Smuzhiyun ret = PTR_ERR(paths[i].path);
24*4882a593Smuzhiyun if (ret != -EPROBE_DEFER)
25*4882a593Smuzhiyun dev_err(dev, "of_icc_get() failed on path %s (%d)\n",
26*4882a593Smuzhiyun paths[i].name, ret);
27*4882a593Smuzhiyun paths[i].path = NULL;
28*4882a593Smuzhiyun goto err;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun return 0;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun err:
35*4882a593Smuzhiyun icc_bulk_put(i, paths);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun return ret;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(of_icc_bulk_get);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun /**
42*4882a593Smuzhiyun * icc_bulk_put() - put a list of interconnect paths
43*4882a593Smuzhiyun * @num_paths: the number of icc_bulk_data
44*4882a593Smuzhiyun * @paths: the icc_bulk_data table with the paths being put
45*4882a593Smuzhiyun */
icc_bulk_put(int num_paths,struct icc_bulk_data * paths)46*4882a593Smuzhiyun void icc_bulk_put(int num_paths, struct icc_bulk_data *paths)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun while (--num_paths >= 0) {
49*4882a593Smuzhiyun icc_put(paths[num_paths].path);
50*4882a593Smuzhiyun paths[num_paths].path = NULL;
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(icc_bulk_put);
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun /**
56*4882a593Smuzhiyun * icc_bulk_set() - set bandwidth to a set of paths
57*4882a593Smuzhiyun * @num_paths: the number of icc_bulk_data
58*4882a593Smuzhiyun * @paths: the icc_bulk_data table containing the paths and bandwidth
59*4882a593Smuzhiyun *
60*4882a593Smuzhiyun * Returns 0 on success or negative errno otherwise.
61*4882a593Smuzhiyun */
icc_bulk_set_bw(int num_paths,const struct icc_bulk_data * paths)62*4882a593Smuzhiyun int icc_bulk_set_bw(int num_paths, const struct icc_bulk_data *paths)
63*4882a593Smuzhiyun {
64*4882a593Smuzhiyun int ret = 0;
65*4882a593Smuzhiyun int i;
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun for (i = 0; i < num_paths; i++) {
68*4882a593Smuzhiyun ret = icc_set_bw(paths[i].path, paths[i].avg_bw, paths[i].peak_bw);
69*4882a593Smuzhiyun if (ret) {
70*4882a593Smuzhiyun pr_err("icc_set_bw() failed on path %s (%d)\n", paths[i].name, ret);
71*4882a593Smuzhiyun return ret;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun return ret;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(icc_bulk_set_bw);
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun /**
80*4882a593Smuzhiyun * icc_bulk_enable() - enable a previously disabled set of paths
81*4882a593Smuzhiyun * @num_paths: the number of icc_bulk_data
82*4882a593Smuzhiyun * @paths: the icc_bulk_data table containing the paths and bandwidth
83*4882a593Smuzhiyun *
84*4882a593Smuzhiyun * Returns 0 on success or negative errno otherwise.
85*4882a593Smuzhiyun */
icc_bulk_enable(int num_paths,const struct icc_bulk_data * paths)86*4882a593Smuzhiyun int icc_bulk_enable(int num_paths, const struct icc_bulk_data *paths)
87*4882a593Smuzhiyun {
88*4882a593Smuzhiyun int ret, i;
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun for (i = 0; i < num_paths; i++) {
91*4882a593Smuzhiyun ret = icc_enable(paths[i].path);
92*4882a593Smuzhiyun if (ret) {
93*4882a593Smuzhiyun pr_err("icc_enable() failed on path %s (%d)\n", paths[i].name, ret);
94*4882a593Smuzhiyun goto err;
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun }
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun return 0;
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun err:
101*4882a593Smuzhiyun icc_bulk_disable(i, paths);
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun return ret;
104*4882a593Smuzhiyun }
105*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(icc_bulk_enable);
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun /**
108*4882a593Smuzhiyun * icc_bulk_disable() - disable a set of interconnect paths
109*4882a593Smuzhiyun * @num_paths: the number of icc_bulk_data
110*4882a593Smuzhiyun * @paths: the icc_bulk_data table containing the paths and bandwidth
111*4882a593Smuzhiyun */
icc_bulk_disable(int num_paths,const struct icc_bulk_data * paths)112*4882a593Smuzhiyun void icc_bulk_disable(int num_paths, const struct icc_bulk_data *paths)
113*4882a593Smuzhiyun {
114*4882a593Smuzhiyun while (--num_paths >= 0)
115*4882a593Smuzhiyun icc_disable(paths[num_paths].path);
116*4882a593Smuzhiyun }
117*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(icc_bulk_disable);
118