linux-kernel - Re: [PATCH V4 2/2] gpio: eic-sprd: Optimize the calculation method of eic number

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Date: Mon, 22 Jan 2024 18:02:14 +0800
From: Chunyan Zhang <zhang.lyra@...il.com>
To: Wenhua Lin <Wenhua.Lin@...soc.com>
Cc: Linus Walleij <linus.walleij@...aro.org>, Andy Shevchenko <andy@...nel.org>, 
	Bartosz Golaszewski <brgl@...ev.pl>, Orson Zhai <orsonzhai@...il.com>, 
	Baolin Wang <baolin.wang@...ux.alibaba.com>, linux-gpio@...r.kernel.org, 
	linux-kernel@...r.kernel.org, wenhua lin <wenhua.lin1994@...il.com>, 
	Xiongpeng Wu <xiongpeng.wu@...soc.com>
Subject: Re: [PATCH V4 2/2] gpio: eic-sprd: Optimize the calculation method of
 eic number

On Tue, 9 Jan 2024 at 15:39, Wenhua Lin <Wenhua.Lin@...soc.com> wrote:
>
> The num_eics is a default value, but some SoCs support more than 8.
> In order to adapt to all projects, the total number of eics is
> automatically calculated through dts.
>
> Signed-off-by: Wenhua Lin <Wenhua.Lin@...soc.com>

Acked-by: Chunyan Zhang <zhang.lyra@...il.com>

Thanks,
Chunyan

> ---
>  drivers/gpio/gpio-eic-sprd.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpio/gpio-eic-sprd.c b/drivers/gpio/gpio-eic-sprd.c
> index 806b88d8dfb7..2dd0e46c42ad 100644
> --- a/drivers/gpio/gpio-eic-sprd.c
> +++ b/drivers/gpio/gpio-eic-sprd.c
> @@ -108,7 +108,6 @@ static struct sprd_eic *to_sprd_eic(struct notifier_block *nb)
>
>  struct sprd_eic_variant_data {
>         enum sprd_eic_type type;
> -       u32 num_eics;
>  };
>
>  static const char *sprd_eic_label_name[SPRD_EIC_MAX] = {
> @@ -118,22 +117,18 @@ static const char *sprd_eic_label_name[SPRD_EIC_MAX] = {
>
>  static const struct sprd_eic_variant_data sc9860_eic_dbnc_data = {
>         .type = SPRD_EIC_DEBOUNCE,
> -       .num_eics = 8,
>  };
>
>  static const struct sprd_eic_variant_data sc9860_eic_latch_data = {
>         .type = SPRD_EIC_LATCH,
> -       .num_eics = 8,
>  };
>
>  static const struct sprd_eic_variant_data sc9860_eic_async_data = {
>         .type = SPRD_EIC_ASYNC,
> -       .num_eics = 8,
>  };
>
>  static const struct sprd_eic_variant_data sc9860_eic_sync_data = {
>         .type = SPRD_EIC_SYNC,
> -       .num_eics = 8,
>  };
>
>  static inline void __iomem *sprd_eic_offset_base(struct sprd_eic *sprd_eic,
> @@ -619,6 +614,7 @@ static int sprd_eic_probe(struct platform_device *pdev)
>         struct gpio_irq_chip *irq;
>         struct sprd_eic *sprd_eic;
>         struct resource *res;
> +       u16 num_banks = 0;
>         int ret, i;
>
>         pdata = of_device_get_match_data(dev);
> @@ -652,10 +648,12 @@ static int sprd_eic_probe(struct platform_device *pdev)
>                 sprd_eic->base[i] = devm_ioremap_resource(dev, res);
>                 if (IS_ERR(sprd_eic->base[i]))
>                         return PTR_ERR(sprd_eic->base[i]);
> +
> +               num_banks++;
>         }
>
>         sprd_eic->chip.label = sprd_eic_label_name[sprd_eic->type];
> -       sprd_eic->chip.ngpio = pdata->num_eics;
> +       sprd_eic->chip.ngpio = num_banks * SPRD_EIC_PER_BANK_NR;
>         sprd_eic->chip.base = -1;
>         sprd_eic->chip.parent = dev;
>         sprd_eic->chip.direction_input = sprd_eic_direction_input;
> --
> 2.17.1
>