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| author |   Vincent Pelletier <plr.vincent@gmail.com> | 2021-07-05 00:43:59 +0000 |
|---|---|---|
| committer |   Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2021-07-21 15:17:53 +0200 |
| commit | 17ce60b2e4f87262eedd693021224130d720c00c (patch) | |
| tree | 33b60760354e02c81e8e20b8c1d9a4127a12104c /Documentation/driver-api/gpio/driver.rst | |
| parent | gpio: rcar: Always use local variable dev in gpio_rcar_probe() (diff) | |
| download | linux-dev-17ce60b2e4f87262eedd693021224130d720c00c.tar.xz linux-dev-17ce60b2e4f87262eedd693021224130d720c00c.zip | |
Documentation: gpio: driver.rst: Remove gpiochip_irqchip_add mention
This function was removed in commit f1f37abbe6fc ("gpio: Retire the
explicit gpio irqchip code") but this mention was left behind.
Also, mention that .set_type() only has to set a line handler if the chip
is cascaded, as opposed to hierarchical.
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'Documentation/driver-api/gpio/driver.rst')
| -rw-r--r-- | Documentation/driver-api/gpio/driver.rst | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/Documentation/driver-api/gpio/driver.rst b/Documentation/driver-api/gpio/driver.rst index d6b0d779859b..bbc53920d4dd 100644 --- a/Documentation/driver-api/gpio/driver.rst +++ b/Documentation/driver-api/gpio/driver.rst @@ -547,13 +547,10 @@ To use the helpers please keep the following in mind: the irqchip can initialize. E.g. .dev and .can_sleep shall be set up properly. -- Nominally set all handlers to handle_bad_irq() in the setup call and pass - handle_bad_irq() as flow handler parameter in gpiochip_irqchip_add() if it is - expected for GPIO driver that irqchip .set_type() callback will be called - before using/enabling each GPIO IRQ. Then set the handler to - handle_level_irq() and/or handle_edge_irq() in the irqchip .set_type() - callback depending on what your controller supports and what is requested - by the consumer. +- Nominally set gpio_irq_chip.handler to handle_bad_irq. Then, if your irqchip + is cascaded, set the handler to handle_level_irq() and/or handle_edge_irq() + in the irqchip .set_type() callback depending on what your controller + supports and what is requested by the consumer. Locking IRQ usage |