diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2019-09-04 16:01:04 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-09-11 01:09:37 +0100 |
| commit | 5fbe5b5883f847363ff1b7280e8b1d2980526b8e (patch) | |
| tree | 806efff2538fb4d6860cae617f4990f47481db7c /include | |
| parent | 4f78d91c722345de94a3c72da49b9d0d49cb76b8 (diff) | |
gpio: Initialize the irqchip valid_mask with a callback
After changing the valid_mask for the struct gpio_chip
to detect the need and presence of a valid mask with the
presence of a .init_valid_mask() callback to fill it in,
we augment the gpio_irq_chip to use the same logic.
Switch all driver using the gpio_irq_chio valid_mask
over to this new method.
This makes sure the valid_mask for the gpio_irq_chip gets
filled in when we add the gpio_chip, which makes it a
little easier to switch over drivers using the old
way of setting up gpio_irq_chip over to the new method
of passing the gpio_irq_chip along with the gpio_chip.
(See drivers/gpio/TODO for details.)
Cc: Joel Stanley <joel@jms.id.au>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Link: https://lore.kernel.org/r/20190904140104.32426-1-linus.walleij@linaro.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/gpio/driver.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h index c667ad0c099d..f8245d67f070 100644 --- a/include/linux/gpio/driver.h +++ b/include/linux/gpio/driver.h @@ -202,11 +202,17 @@ struct gpio_irq_chip { bool threaded; /** - * @need_valid_mask: - * - * If set core allocates @valid_mask with all bits set to one. + * @init_valid_mask: optional routine to initialize @valid_mask, to be + * used if not all GPIO lines are valid interrupts. Sometimes some + * lines just cannot fire interrupts, and this routine, when defined, + * is passed a bitmap in "valid_mask" and it will have ngpios + * bits from 0..(ngpios-1) set to "1" as in valid. The callback can + * then directly set some bits to "0" if they cannot be used for + * interrupts. */ - bool need_valid_mask; + void (*init_valid_mask)(struct gpio_chip *chip, + unsigned long *valid_mask, + unsigned int ngpios); /** * @valid_mask: |