From mboxrd@z Thu Jan 1 00:00:00 1970 From: aisheng.dong@nxp.com (Dong Aisheng) Date: Wed, 29 Aug 2018 22:41:06 +0800 Subject: [PATCH V5 1/4] clk: bulk: add of_clk_bulk_get() In-Reply-To: <1535553669-30250-1-git-send-email-aisheng.dong@nxp.com> References: <1535553669-30250-1-git-send-email-aisheng.dong@nxp.com> Message-ID: <1535553669-30250-2-git-send-email-aisheng.dong@nxp.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org '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 Cc: Michael Turquette Cc: Russell King Reported-by: Shawn Guo Tested-by: Thor Thayer Signed-off-by: Dong Aisheng --- v3->v4: * no changes v2->v3: * remove #if define condition * remove EXPORT_SYMBOL --- drivers/clk/clk-bulk.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/clk/clk-bulk.c b/drivers/clk/clk-bulk.c index 6904ed6..4460ac5 100644 --- a/drivers/clk/clk-bulk.c +++ b/drivers/clk/clk-bulk.c @@ -19,6 +19,35 @@ #include #include #include +#include + +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) { -- 2.7.4