Re: [PATCH v3] gpio: sifive: To get gpio irq offset from device tree data

From: Bartosz Golaszewski
Date: Wed Nov 18 2020 - 03:29:20 EST


On Fri, Nov 13, 2020 at 3:34 AM Greentime Hu <greentime.hu@xxxxxxxxxx> wrote:
>
> We can get hwirq number of the gpio by its irq_data->hwirq so that we don't
> need to add more macros for different platforms. This patch is tested in
> SiFive Unleashed board and SiFive Unmatched board.
>
> Signed-off-by: Greentime Hu <greentime.hu@xxxxxxxxxx>
> ---
> drivers/gpio/gpio-sifive.c | 14 ++++++++++----
> 1 file changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpio/gpio-sifive.c b/drivers/gpio/gpio-sifive.c
> index c54dd08f2cbf..630bddec48e5 100644
> --- a/drivers/gpio/gpio-sifive.c
> +++ b/drivers/gpio/gpio-sifive.c
> @@ -29,7 +29,6 @@
> #define SIFIVE_GPIO_OUTPUT_XOR 0x40
>
> #define SIFIVE_GPIO_MAX 32
> -#define SIFIVE_GPIO_IRQ_OFFSET 7
>
> struct sifive_gpio {
> void __iomem *base;
> @@ -37,7 +36,7 @@ struct sifive_gpio {
> struct regmap *regs;
> unsigned long irq_state;
> unsigned int trigger[SIFIVE_GPIO_MAX];
> - unsigned int irq_parent[SIFIVE_GPIO_MAX];
> + unsigned int irq_number[SIFIVE_GPIO_MAX];
> };
>
> static void sifive_gpio_set_ie(struct sifive_gpio *chip, unsigned int offset)
> @@ -144,8 +143,12 @@ static int sifive_gpio_child_to_parent_hwirq(struct gpio_chip *gc,
> unsigned int *parent,
> unsigned int *parent_type)
> {
> + struct sifive_gpio *chip = gpiochip_get_data(gc);
> + struct irq_data *d = irq_get_irq_data(chip->irq_number[child]);
> +
> *parent_type = IRQ_TYPE_NONE;
> - *parent = child + SIFIVE_GPIO_IRQ_OFFSET;
> + *parent = irqd_to_hwirq(d);
> +
> return 0;
> }
>
> @@ -165,7 +168,7 @@ static int sifive_gpio_probe(struct platform_device *pdev)
> struct irq_domain *parent;
> struct gpio_irq_chip *girq;
> struct sifive_gpio *chip;
> - int ret, ngpio;
> + int ret, ngpio, i;
>
> chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
> if (!chip)
> @@ -200,6 +203,9 @@ static int sifive_gpio_probe(struct platform_device *pdev)
> return -ENODEV;
> }
>
> + for (i = 0; i < ngpio; i++)
> + chip->irq_number[i] = platform_get_irq(pdev, i);
> +
> ret = bgpio_init(&chip->gc, dev, 4,
> chip->base + SIFIVE_GPIO_INPUT_VAL,
> chip->base + SIFIVE_GPIO_OUTPUT_VAL,
> --
> 2.29.2
>

Applied, thanks!

Bart