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authorDong Aisheng <aisheng.dong@nxp.com>2018-08-31 07:45:53 +0300
committerStephen Boyd <sboyd@kernel.org>2018-10-17 01:42:47 +0300
commitcfdc0411cf01aff7bb44a4edcbaa578ad363ab77 (patch)
tree06c17881c18a278856b62f3f47535a0800ba2f41 /drivers/clk/clk-bulk.c
parent5b394b2ddf0347bef56e50c69a58773c94343ff3 (diff)
downloadlinux-cfdc0411cf01aff7bb44a4edcbaa578ad363ab77.tar.xz
clk: bulk: add of_clk_bulk_get()
'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>
Diffstat (limited to 'drivers/clk/clk-bulk.c')
-rw-r--r--drivers/clk/clk-bulk.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c
index 6904ed6da504..4460ac52199f 100644
--- a/drivers/clk/clk-bulk.c
+++ b/drivers/clk/clk-bulk.c
@@ -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)
{