From patchwork Tue Feb 18 16:13:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sagar Shrikant Kadam X-Patchwork-Id: 236514 List-Id: U-Boot discussion From: sagar.kadam at sifive.com (Sagar Shrikant Kadam) Date: Tue, 18 Feb 2020 08:13:23 -0800 Subject: [PATCH v1 1/2] fu540: prci: add request and free clock handlers In-Reply-To: <1582042404-27356-1-git-send-email-sagar.kadam@sifive.com> References: <1582042404-27356-1-git-send-email-sagar.kadam@sifive.com> Message-ID: <1582042404-27356-2-git-send-email-sagar.kadam@sifive.com> Add handlers to check if a valid clock id is used to request clock by any driver using clk_request/clk_free API calls. Signed-off-by: Sagar Shrikant Kadam Tested-by: Vincent Chen --- drivers/clk/sifive/fu540-prci.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c index 8847178..ecf29a0 100644 --- a/drivers/clk/sifive/fu540-prci.c +++ b/drivers/clk/sifive/fu540-prci.c @@ -580,6 +580,28 @@ static ulong sifive_fu540_prci_set_rate(struct clk *clk, ulong rate) return rate; } +static int sifive_fu540_prci_clk_request(struct clk *clk) +{ + debug("%s(clk=%p) (dev=%p, id=%lu)\n", __func__, clk, clk->dev, + clk->id); + + if (clk->id >= ARRAY_SIZE(__prci_init_clocks)) + return -EINVAL; + + return 0; +} + +static int sifive_fu540_prci_clk_free(struct clk *clk) +{ + debug("%s(clk=%p) (dev=%p, id=%lu)\n", __func__, clk, clk->dev, + clk->id); + + if (clk->id >= ARRAY_SIZE(__prci_init_clocks)) + return -EINVAL; + + return 0; +} + static int sifive_fu540_prci_probe(struct udevice *dev) { int i, err; @@ -611,6 +633,8 @@ static int sifive_fu540_prci_probe(struct udevice *dev) static struct clk_ops sifive_fu540_prci_ops = { .set_rate = sifive_fu540_prci_set_rate, .get_rate = sifive_fu540_prci_get_rate, + .request = sifive_fu540_prci_clk_request, + .rfree = sifive_fu540_prci_clk_free, }; static const struct udevice_id sifive_fu540_prci_ids[] = {