diff options
| author | Paul Cercueil <paul@crapouillou.net> | 2020-05-03 18:45:49 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-05-12 15:05:02 +0200 |
| commit | 9a0f1341df7d555eb50a826d1f6f4191a78eabea (patch) | |
| tree | 13705ccecefe8b450f0eb9e6305c9ffeb4b49102 /drivers/pinctrl/pinctrl-ingenic.c | |
| parent | pinctrl: rk805: Constify rk805_gpio_cfgs (diff) | |
| download | linux-9a0f1341df7d555eb50a826d1f6f4191a78eabea.tar.xz linux-9a0f1341df7d555eb50a826d1f6f4191a78eabea.zip | |
pinctrl: ingenic: Add irq_{request,release}_resources callbacks
These are called when a GPIO is to be used as IRQ.
Without these custom callbacks, when an interrupt is requested directly
and not through gpiod_to_irq(), the request fails because the GPIO is
not necesarily in input mode. These callbacks simply enforce that the
requested GPIO is in input mode.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200503164549.163884-1-paul@crapouillou.net
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-ingenic.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-ingenic.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c index e5dcf77fe43d..6a8d44504f94 100644 --- a/drivers/pinctrl/pinctrl-ingenic.c +++ b/drivers/pinctrl/pinctrl-ingenic.c @@ -1977,6 +1977,25 @@ static const struct pinctrl_ops ingenic_pctlops = { .dt_free_map = pinconf_generic_dt_free_map, }; +static int ingenic_gpio_irq_request(struct irq_data *data) +{ + struct gpio_chip *gpio_chip = irq_data_get_irq_chip_data(data); + int ret; + + ret = ingenic_gpio_direction_input(gpio_chip, data->hwirq); + if (ret) + return ret; + + return gpiochip_reqres_irq(gpio_chip, data->hwirq); +} + +static void ingenic_gpio_irq_release(struct irq_data *data) +{ + struct gpio_chip *gpio_chip = irq_data_get_irq_chip_data(data); + + return gpiochip_relres_irq(gpio_chip, data->hwirq); +} + static int ingenic_pinmux_set_pin_fn(struct ingenic_pinctrl *jzpc, int pin, int func) { @@ -2338,6 +2357,8 @@ static int __init ingenic_gpio_probe(struct ingenic_pinctrl *jzpc, jzgc->irq_chip.irq_ack = ingenic_gpio_irq_ack; jzgc->irq_chip.irq_set_type = ingenic_gpio_irq_set_type; jzgc->irq_chip.irq_set_wake = ingenic_gpio_irq_set_wake; + jzgc->irq_chip.irq_request_resources = ingenic_gpio_irq_request; + jzgc->irq_chip.irq_release_resources = ingenic_gpio_irq_release; jzgc->irq_chip.flags = IRQCHIP_MASK_ON_SUSPEND; girq = &jzgc->gc.irq; |