staticint __must_check of_clk_bulk_get(struct device_node *np, int num_clks, struct clk_bulk_data *clks)
{ int ret; int i;
for (i = 0; i < num_clks; i++) {
clks[i].id = NULL;
clks[i].clk = NULL;
}
for (i = 0; i < num_clks; i++) {
of_property_read_string_index(np, "clock-names", i, &clks[i].id);
clks[i].clk = of_clk_get(np, i); if (IS_ERR(clks[i].clk)) {
ret = PTR_ERR(clks[i].clk);
pr_err("%pOF: Failed to get clk index: %d ret: %d\n",
np, i, ret);
clks[i].clk = NULL; goto err;
}
}
return 0;
err:
clk_bulk_put(i, clks);
return ret;
}
staticint __must_check of_clk_bulk_get_all(struct device_node *np, struct clk_bulk_data **clks)
{ struct clk_bulk_data *clk_bulk; int num_clks; int ret;
num_clks = of_clk_get_parent_count(np); if (!num_clks) return 0;
clk_bulk = kmalloc_array(num_clks, sizeof(*clk_bulk), GFP_KERNEL); if (!clk_bulk) return -ENOMEM;
ret = of_clk_bulk_get(np, num_clks, clk_bulk); if (ret) {
kfree(clk_bulk); return ret;
}
/** * clk_bulk_unprepare - undo preparation of a set of clock sources * @num_clks: the number of clk_bulk_data * @clks: the clk_bulk_data table being unprepared * * clk_bulk_unprepare may sleep, which differentiates it from clk_bulk_disable. * Returns 0 on success, -EERROR otherwise.
*/ void clk_bulk_unprepare(int num_clks, conststruct clk_bulk_data *clks)
{ while (--num_clks >= 0)
clk_unprepare(clks[num_clks].clk);
}
EXPORT_SYMBOL_GPL(clk_bulk_unprepare);
/** * clk_bulk_prepare - prepare a set of clocks * @num_clks: the number of clk_bulk_data * @clks: the clk_bulk_data table being prepared * * clk_bulk_prepare may sleep, which differentiates it from clk_bulk_enable. * Returns 0 on success, -EERROR otherwise.
*/ int __must_check clk_bulk_prepare(int num_clks, conststruct clk_bulk_data *clks)
{ int ret; int i;
for (i = 0; i < num_clks; i++) {
ret = clk_prepare(clks[i].clk); if (ret) {
pr_err("Failed to prepare clk '%s': %d\n",
clks[i].id, ret); goto err;
}
}
/** * clk_bulk_disable - gate a set of clocks * @num_clks: the number of clk_bulk_data * @clks: the clk_bulk_data table being gated * * clk_bulk_disable must not sleep, which differentiates it from * clk_bulk_unprepare. clk_bulk_disable must be called before * clk_bulk_unprepare.
*/ void clk_bulk_disable(int num_clks, conststruct clk_bulk_data *clks)
{
while (--num_clks >= 0)
clk_disable(clks[num_clks].clk);
}
EXPORT_SYMBOL_GPL(clk_bulk_disable);
/** * clk_bulk_enable - ungate a set of clocks * @num_clks: the number of clk_bulk_data * @clks: the clk_bulk_data table being ungated * * clk_bulk_enable must not sleep * Returns 0 on success, -EERROR otherwise.
*/ int __must_check clk_bulk_enable(int num_clks, conststruct clk_bulk_data *clks)
{ int ret; int i;
for (i = 0; i < num_clks; i++) {
ret = clk_enable(clks[i].clk); if (ret) {
pr_err("Failed to enable clk '%s': %d\n",
clks[i].id, ret); goto err;
}
}
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