[PATCH v1 2/2] pinctrl: single: Add request() api

[Rayagonda Kokatanur]

On Tue, Aug 24, 2021 at 3:46 PM Bharat Kumar Reddy Gooty
<bharat.gooty at broadcom.com> wrote:
>
> From: Bharat Gooty <bharat.gooty at broadcom.com>
>
> Add pinctrl_ops->request api to configure pctrl
> pad register in gpio mode.
>
> Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur at broadcom.com>
> Signed-off-by: Bharat Gooty <bharat.gooty at broadcom.com>
> ---
>  drivers/pinctrl/pinctrl-single.c | 34 ++++++++++++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
>
> diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
> index 0f96cd5870..8fc07e3498 100644
> --- a/drivers/pinctrl/pinctrl-single.c
> +++ b/drivers/pinctrl/pinctrl-single.c
> @@ -250,6 +250,39 @@ static int single_get_pin_muxing(struct udevice *dev, unsigned int pin,
>         return 0;
>  }
>
> +static int single_request(struct udevice *dev, int pin, int flags)
> +{
> +       struct single_priv *priv = dev_get_priv(dev);
> +       struct single_pdata *pdata = dev_get_plat(dev);
> +       struct single_gpiofunc_range *frange = NULL;
> +       struct list_head *pos, *tmp;
> +       phys_addr_t reg;
> +       int mux_bytes = 0;
> +       u32 data;
> +
> +       /* If function mask is null, needn't enable it. */
> +       if (!pdata->mask)
> +               return -ENOTSUPP;
> +
> +       list_for_each_safe(pos, tmp, &priv->gpiofuncs) {
> +               frange = list_entry(pos, struct single_gpiofunc_range, node);
> +               if ((pin >= frange->offset + frange->npins) ||
> +                   pin < frange->offset)
> +                       continue;
> +
> +               mux_bytes = pdata->width / BITS_PER_BYTE;
> +               reg = pdata->base + pin * mux_bytes;
> +
> +               data = single_read(dev, reg);
> +               data &= ~pdata->mask;
> +               data |= frange->gpiofunc;
> +               single_write(dev, data, reg);
> +               break;
> +       }
> +
> +       return 0;
> +}
> +
>  static struct single_func *single_allocate_function(struct udevice *dev,
>                                                     unsigned int group_pins)
>  {
> @@ -587,6 +620,7 @@ const struct pinctrl_ops single_pinctrl_ops = {
>         .get_pin_name = single_get_pin_name,
>         .set_state = single_set_state,
>         .get_pin_muxing = single_get_pin_muxing,
> +       .request = single_request,
>  };
>
>  static const struct udevice_id single_pinctrl_match[] = {
> --
> 2.17.1
>

Acked-by: Rayagonda Kokatanur <rayagonda.kokatanur at broadcom.com>
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