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pinctrl: sunxi: Fix multi bank interrupt support in gpio_to_irq

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When mapping the interrupts, the gpio_to_irq function did not consider
the bank number of the gpio pin in question, only the offset or the
interrupt number in the bank. As a result, requests for interrupts in
the later banks get mapped to the first bank.

This issue was discovered while enabling mmc on the new sun8i platform.
The tablet I have uses a pin/interrupt from the second bank to do mmc
card detection. Tested on this very device with register inspection and
actual mmc card insertion/removal.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Chen-Yu Tsai 2014-07-01 00:04:59 +08:00 committed by Linus Walleij
parent d61e23e525
commit 0d3bafac65
1 changed files with 6 additions and 3 deletions
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9
drivers/pinctrl/sunxi/pinctrl-sunxi.c
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@ -520,6 +520,7 @@ static int sunxi_pinctrl_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
{
struct sunxi_pinctrl *pctl = dev_get_drvdata(chip->dev);
struct sunxi_desc_function *desc;
unsigned irqnum;
if (offset >= chip->ngpio)
return -ENXIO;
@ -528,10 +529,12 @@ static int sunxi_pinctrl_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
if (!desc)
return -EINVAL;
dev_dbg(chip->dev, "%s: request IRQ for GPIO %d, return %d\n",
chip->label, offset + chip->base, desc->irqnum);
irqnum = desc->irqbank * IRQ_PER_BANK + desc->irqnum;
return irq_find_mapping(pctl->domain, desc->irqnum);
dev_dbg(chip->dev, "%s: request IRQ for GPIO %d, return %d\n",
chip->label, offset + chip->base, irqnum);
return irq_find_mapping(pctl->domain, irqnum);
}
static int sunxi_pinctrl_irq_request_resources(struct irq_data *d)