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gpio: sifive: To get gpio irq offset from device tree data

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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>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Greentime Hu 2020-11-13 10:33:55 +08:00 committed by Bartosz Golaszewski
parent 3c6e73e47a
commit f52d6d8b43
1 changed files with 10 additions and 4 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

14
drivers/gpio/gpio-sifive.c
View file

@ -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,