| Message ID | 20200722110649.202223-1-linus.walleij@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | gpio: pci-idio-16: Use irqchip template | expand |
On Wed, Jul 22, 2020 at 01:06:49PM +0200, Linus Walleij wrote: > This makes the driver use the irqchip template to assign > properties to the gpio_irq_chip instead of using the > explicit call to gpiochip_irqchip_add(). > > The irqchip is instead added while adding the gpiochip. > Also move the IRQ initialization to the special .init_hw() > callback. > > Cc: William Breathitt Gray <vilhelm.gray@gmail.com> > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> > --- > drivers/gpio/gpio-pci-idio-16.c | 33 ++++++++++++++++++++++----------- > 1 file changed, 22 insertions(+), 11 deletions(-) > > diff --git a/drivers/gpio/gpio-pci-idio-16.c b/drivers/gpio/gpio-pci-idio-16.c > index 638d6656ce73..9acec76e0b51 100644 > --- a/drivers/gpio/gpio-pci-idio-16.c > +++ b/drivers/gpio/gpio-pci-idio-16.c > @@ -280,6 +280,17 @@ static const char *idio_16_names[IDIO_16_NGPIO] = { > "IIN8", "IIN9", "IIN10", "IIN11", "IIN12", "IIN13", "IIN14", "IIN15" > }; > > +static int idio_16_irq_init_hw(struct gpio_chip *gc) > +{ > + struct idio_16_gpio *const idio16gpio = gpiochip_get_data(gc); > + > + /* Disable IRQ by default and clear any pending interrupt */ > + iowrite8(0, &idio16gpio->reg->irq_ctl); > + iowrite8(0, &idio16gpio->reg->in0_7); > + > + return 0; > +} > + > static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) > { > struct device *const dev = &pdev->dev; > @@ -287,6 +298,7 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) > int err; > const size_t pci_bar_index = 2; > const char *const name = pci_name(pdev); > + struct gpio_irq_chip *girq; > > idio16gpio = devm_kzalloc(dev, sizeof(*idio16gpio), GFP_KERNEL); > if (!idio16gpio) > @@ -323,6 +335,16 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) > idio16gpio->chip.set = idio_16_gpio_set; > idio16gpio->chip.set_multiple = idio_16_gpio_set_multiple; > > + girq = &idio16gpio->chip.irq; > + girq->chip = &idio_16_irqchip; > + /* This will let us handle the parent IRQ in the driver */ > + girq->parent_handler = NULL; > + girq->num_parents = 0; > + girq->parents = NULL; > + girq->default_type = IRQ_TYPE_NONE; > + girq->handler = handle_edge_irq; > + girq->init_hw = idio_16_irq_init_hw; > + > raw_spin_lock_init(&idio16gpio->lock); > > err = devm_gpiochip_add_data(dev, &idio16gpio->chip, idio16gpio); > @@ -331,17 +353,6 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) > return err; > } > > - /* Disable IRQ by default and clear any pending interrupt */ > - iowrite8(0, &idio16gpio->reg->irq_ctl); > - iowrite8(0, &idio16gpio->reg->in0_7); > - > - err = gpiochip_irqchip_add(&idio16gpio->chip, &idio_16_irqchip, 0, > - handle_edge_irq, IRQ_TYPE_NONE); > - if (err) { > - dev_err(dev, "Could not add irqchip (%d)\n", err); > - return err; > - } > - > err = devm_request_irq(dev, pdev->irq, idio_16_irq_handler, IRQF_SHARED, > name, idio16gpio); > if (err) { > -- > 2.26.2 >
diff --git a/drivers/gpio/gpio-pci-idio-16.c b/drivers/gpio/gpio-pci-idio-16.c index 638d6656ce73..9acec76e0b51 100644 --- a/drivers/gpio/gpio-pci-idio-16.c +++ b/drivers/gpio/gpio-pci-idio-16.c @@ -280,6 +280,17 @@ static const char *idio_16_names[IDIO_16_NGPIO] = { "IIN8", "IIN9", "IIN10", "IIN11", "IIN12", "IIN13", "IIN14", "IIN15" }; +static int idio_16_irq_init_hw(struct gpio_chip *gc) +{ + struct idio_16_gpio *const idio16gpio = gpiochip_get_data(gc); + + /* Disable IRQ by default and clear any pending interrupt */ + iowrite8(0, &idio16gpio->reg->irq_ctl); + iowrite8(0, &idio16gpio->reg->in0_7); + + return 0; +} + static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct device *const dev = &pdev->dev; @@ -287,6 +298,7 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) int err; const size_t pci_bar_index = 2; const char *const name = pci_name(pdev); + struct gpio_irq_chip *girq; idio16gpio = devm_kzalloc(dev, sizeof(*idio16gpio), GFP_KERNEL); if (!idio16gpio) @@ -323,6 +335,16 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) idio16gpio->chip.set = idio_16_gpio_set; idio16gpio->chip.set_multiple = idio_16_gpio_set_multiple; + girq = &idio16gpio->chip.irq; + girq->chip = &idio_16_irqchip; + /* This will let us handle the parent IRQ in the driver */ + girq->parent_handler = NULL; + girq->num_parents = 0; + girq->parents = NULL; + girq->default_type = IRQ_TYPE_NONE; + girq->handler = handle_edge_irq; + girq->init_hw = idio_16_irq_init_hw; + raw_spin_lock_init(&idio16gpio->lock); err = devm_gpiochip_add_data(dev, &idio16gpio->chip, idio16gpio); @@ -331,17 +353,6 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) return err; } - /* Disable IRQ by default and clear any pending interrupt */ - iowrite8(0, &idio16gpio->reg->irq_ctl); - iowrite8(0, &idio16gpio->reg->in0_7); - - err = gpiochip_irqchip_add(&idio16gpio->chip, &idio_16_irqchip, 0, - handle_edge_irq, IRQ_TYPE_NONE); - if (err) { - dev_err(dev, "Could not add irqchip (%d)\n", err); - return err; - } - err = devm_request_irq(dev, pdev->irq, idio_16_irq_handler, IRQF_SHARED, name, idio16gpio); if (err) {
This makes the driver use the irqchip template to assign properties to the gpio_irq_chip instead of using the explicit call to gpiochip_irqchip_add(). The irqchip is instead added while adding the gpiochip. Also move the IRQ initialization to the special .init_hw() callback. Cc: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- drivers/gpio/gpio-pci-idio-16.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-)