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clk: bulk: add of_clk_bulk_get()

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'clock-names' property is optional in DT, so of_clk_bulk_get() is
introduced here to handle this for DT users without 'clock-names'
specified. Later clk_bulk_get_all() will be implemented on top of
it and this API will be kept private until someone proves they need
it because they don't have a struct device pointer.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Russell King <linux@arm.linux.org.uk>
Reported-by: Shawn Guo <shawnguo@kernel.org>
Tested-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Dong Aisheng 2018-08-31 12:45:53 +08:00 committed by Stephen Boyd
parent 5b394b2ddf
commit cfdc0411cf
1 changed files with 29 additions and 0 deletions
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29
drivers/clk/clk-bulk.c
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@ -19,6 +19,35 @@
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/export.h>
#include <linux/of.h>
static int __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].clk = NULL;
for (i = 0; i < num_clks; i++) {
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;
}
void clk_bulk_put(int num_clks, struct clk_bulk_data *clks)
{