[PATCH v4 1/4] fu540: prci: add request and free clock handlers

[Bin Meng <bmeng.cn@gmail.com>]

Hi Sagar,

On Sun, Jun 21, 2020 at 9:10 PM Sagar Shrikant Kadam
<sagar.kadam@sifive.com> wrote:
>
> Add clk_request handler to check if a valid clock is requested.
> Here clk_free handler is added for debug purpose which will display
> details of clock passed to clk_free.
>
> Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
> Reviewed-by: Pragnesh Patel <Pragnesh.patel@sifive.com>
> ---
>  drivers/clk/sifive/fu540-prci.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
>
> diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c
> index fe6e0d4..9a9ff6b 100644
> --- a/drivers/clk/sifive/fu540-prci.c
> +++ b/drivers/clk/sifive/fu540-prci.c
> @@ -686,6 +686,25 @@ 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);
> +
> +       return 0;
> +}

It seems these 2 routines do not actually do anything? Is this for
debugging purposes?

Regards,
Bin