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gpio: Drop the chained IRQ handler assign function 

gpiochip_set_chained_irqchip() would assign a chained handler
to a GPIO chip. We now populate struct gpio_irq_chip for all
chained GPIO irqchips so drop this function.

Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200113220800.77817-1-linus.walleij@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2020-01-13 23:08:00 +01:00
parent eec6d97d6d
commit 72780ce5f1
5 changed files with 3 additions and 38 deletions
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5
Documentation/driver-api/gpio/driver.rst
View File

@ -507,11 +507,6 @@ available but we try to move away from this:
cascaded irq has to be handled by a threaded interrupt handler.
Apart from that it works exactly like the chained irqchip.
- DEPRECATED: gpiochip_set_chained_irqchip(): sets up a chained cascaded irq
handler for a gpio_chip from a parent IRQ and passes the struct gpio_chip*
as handler data. Notice that we pass is as the handler data, since the
irqchip data is likely used by the parent irqchip.
- gpiochip_set_nested_irqchip(): sets up a nested cascaded irq handler for a
gpio_chip from a parent IRQ. As the parent IRQ has usually been
explicitly requested by the driver, this does very little more than

3
drivers/gpio/gpio-mt7621.c
View File

@ -253,8 +253,7 @@ mediatek_gpio_bank_probe(struct device *dev,
/*
* Directly request the irq here instead of passing
* a flow-handler to gpiochip_set_chained_irqchip,
* because the irq is shared.
* a flow-handler because the irq is shared.
*/
ret = devm_request_irq(dev, mtk->gpio_irq,
mediatek_gpio_irq_handler, IRQF_SHARED,

3
drivers/gpio/gpio-xgs-iproc.c
View File

@ -251,8 +251,7 @@ static int iproc_gpio_probe(struct platform_device *pdev)
/*
* Directly request the irq here instead of passing
* a flow-handler to gpiochip_set_chained_irqchip,
* because the irq is shared.
* a flow-handler because the irq is shared.
*/
ret = devm_request_irq(dev, irq, iproc_gpio_irq_handler,
IRQF_SHARED, chip->gc.label, &chip->gc);

25
drivers/gpio/gpiolib.c
View File

@ -1805,7 +1805,7 @@ EXPORT_SYMBOL_GPL(gpiochip_irqchip_irq_valid);
* gpiochip_set_cascaded_irqchip() - connects a cascaded irqchip to a gpiochip
* @gc: the gpiochip to set the irqchip chain to
* @parent_irq: the irq number corresponding to the parent IRQ for this
* chained irqchip
* cascaded irqchip
* @parent_handler: the parent interrupt handler for the accumulated IRQ
* coming out of the gpiochip. If the interrupt is nested rather than
* cascaded, pass NULL in this handler argument
@ -1847,29 +1847,6 @@ static void gpiochip_set_cascaded_irqchip(struct gpio_chip *gc,
}
}
/**
* gpiochip_set_chained_irqchip() - connects a chained irqchip to a gpiochip
* @gpiochip: the gpiochip to set the irqchip chain to
* @irqchip: the irqchip to chain to the gpiochip
* @parent_irq: the irq number corresponding to the parent IRQ for this
* chained irqchip
* @parent_handler: the parent interrupt handler for the accumulated IRQ
* coming out of the gpiochip.
*/
void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip,
struct irq_chip *irqchip,
unsigned int parent_irq,
irq_flow_handler_t parent_handler)
{
if (gpiochip->irq.threaded) {
chip_err(gpiochip, "tried to chain a threaded gpiochip\n");
return;
}
gpiochip_set_cascaded_irqchip(gpiochip, parent_irq, parent_handler);
}
EXPORT_SYMBOL_GPL(gpiochip_set_chained_irqchip);
/**
* gpiochip_set_nested_irqchip() - connects a nested irqchip to a gpiochip
* @gpiochip: the gpiochip to set the irqchip nested handler to

5
include/linux/gpio/driver.h
View File

@ -585,11 +585,6 @@ int gpiochip_irq_domain_activate(struct irq_domain *domain,
void gpiochip_irq_domain_deactivate(struct irq_domain *domain,
struct irq_data *data);
void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip,
struct irq_chip *irqchip,
unsigned int parent_irq,
irq_flow_handler_t parent_handler);
void gpiochip_set_nested_irqchip(struct gpio_chip *gpiochip,
struct irq_chip *irqchip,
unsigned int parent_irq);