Add support for multiple pin controller instances.
First remove the static definition of the sunxi gpio chip struct and fill
the dynamically struct instead.
Then define a new pin_base field in the sunxi_pinctrl_desc which will be
used to specify the gpiochip base pin.
Signed-off-by: Boris BREZILLON <boris.brezillon@xxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/pinctrl-sunxi.c | 30 ++++++++++++++----------------
drivers/pinctrl/pinctrl-sunxi.h | 1 +
2 files changed, 15 insertions(+), 16 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-sunxi.c b/drivers/pinctrl/pinctrl-sunxi.c
index f9fabe9..64bcc68 100644
--- a/drivers/pinctrl/pinctrl-sunxi.c
+++ b/drivers/pinctrl/pinctrl-sunxi.c
@@ -538,19 +538,6 @@ static int sunxi_pinctrl_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
return irq_find_mapping(pctl->domain, desc->irqnum);
}
-static struct gpio_chip sunxi_pinctrl_gpio_chip = {
- .owner = THIS_MODULE,
- .request = sunxi_pinctrl_gpio_request,
- .free = sunxi_pinctrl_gpio_free,
- .direction_input = sunxi_pinctrl_gpio_direction_input,
- .direction_output = sunxi_pinctrl_gpio_direction_output,
- .get = sunxi_pinctrl_gpio_get,
- .set = sunxi_pinctrl_gpio_set,
- .of_xlate = sunxi_pinctrl_gpio_of_xlate,
- .to_irq = sunxi_pinctrl_gpio_to_irq,
- .of_gpio_n_cells = 3,
- .can_sleep = false,
-};
static int sunxi_pinctrl_irq_set_type(struct irq_data *d,
unsigned int type)
@@ -858,11 +845,22 @@ static int sunxi_pinctrl_probe(struct platform_device *pdev)
}
last_pin = pctl->desc->pins[pctl->desc->npins - 1].pin.number;
- pctl->chip = &sunxi_pinctrl_gpio_chip;
- pctl->chip->ngpio = round_up(last_pin, PINS_PER_BANK);
+ pctl->chip->owner = THIS_MODULE;
+ pctl->chip->request = sunxi_pinctrl_gpio_request,
+ pctl->chip->free = sunxi_pinctrl_gpio_free,
+ pctl->chip->direction_input = sunxi_pinctrl_gpio_direction_input,
+ pctl->chip->direction_output = sunxi_pinctrl_gpio_direction_output,
+ pctl->chip->get = sunxi_pinctrl_gpio_get,
+ pctl->chip->set = sunxi_pinctrl_gpio_set,
+ pctl->chip->of_xlate = sunxi_pinctrl_gpio_of_xlate,
+ pctl->chip->to_irq = sunxi_pinctrl_gpio_to_irq,
+ pctl->chip->of_gpio_n_cells = 3,
+ pctl->chip->can_sleep = false,
+ pctl->chip->ngpio = round_up(last_pin, PINS_PER_BANK) -
+ pctl->desc->pin_base;
pctl->chip->label = dev_name(&pdev->dev);
pctl->chip->dev = &pdev->dev;
- pctl->chip->base = 0;
+ pctl->chip->base = pctl->desc->pin_base;
ret = gpiochip_add(pctl->chip);
if (ret)
diff --git a/drivers/pinctrl/pinctrl-sunxi.h b/drivers/pinctrl/pinctrl-sunxi.h
index ed3c4d7..35d15b2 100644
--- a/drivers/pinctrl/pinctrl-sunxi.h
+++ b/drivers/pinctrl/pinctrl-sunxi.h
@@ -450,6 +450,7 @@ struct sunxi_pinctrl_desc {
int npins;
struct pinctrl_gpio_range *ranges;
int nranges;
+ unsigned pin_base;
};
struct sunxi_pinctrl_function {
--
1.8.3.2
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