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

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

[Greentime Hu]

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@sifive.com>
---
 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


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

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

[Bartosz Golaszewski]

On Fri, Nov 13, 2020 at 3:34 AM Greentime Hu <greentime.hu@sifive.com> 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@sifive.com>
> ---

Please list the changes between versions of patches. What has changed since v2?

Bartosz

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

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

[Greentime Hu]

Bartosz Golaszewski <bgolaszewski@baylibre.com> 於 2020年11月13日 週五 下午5:00寫道：
>
> On Fri, Nov 13, 2020 at 3:34 AM Greentime Hu <greentime.hu@sifive.com> 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@sifive.com>
> > ---
>
> Please list the changes between versions of patches. What has changed since v2?

changes in v3:
  Add 2 newlines
changes in v2:
  Use irqd_to_hwirq() instead of d->hwirq and platform_get_irq()
instead of  irq_of_parse_and_map()

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

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

[Bartosz Golaszewski]

On Fri, Nov 13, 2020 at 3:34 AM Greentime Hu <greentime.hu@sifive.com> 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@sifive.com>
> ---
>  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

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv