| Message ID | 20200722104820.174654-1-linus.walleij@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | gpio: 104-idi-48: Use irqchip template | expand |
On Wed, Jul 22, 2020 at 12:48:20PM +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-104-idi-48.c | 33 ++++++++++++++++++++++----------- > 1 file changed, 22 insertions(+), 11 deletions(-) > > diff --git a/drivers/gpio/gpio-104-idi-48.c b/drivers/gpio/gpio-104-idi-48.c > index d350ac0de06b..94c3a9bc4e75 100644 > --- a/drivers/gpio/gpio-104-idi-48.c > +++ b/drivers/gpio/gpio-104-idi-48.c > @@ -247,10 +247,22 @@ static const char *idi48_names[IDI48_NGPIO] = { > "Bit 18 B", "Bit 19 B", "Bit 20 B", "Bit 21 B", "Bit 22 B", "Bit 23 B" > }; > > +static int idi_48_irq_init_hw(struct gpio_chip *gc) > +{ > + struct idi_48_gpio *const idi48gpio = gpiochip_get_data(gc); > + > + /* Disable IRQ by default */ > + outb(0, idi48gpio->base + 7); > + inb(idi48gpio->base + 7); > + > + return 0; > +} > + > static int idi_48_probe(struct device *dev, unsigned int id) > { > struct idi_48_gpio *idi48gpio; > const char *const name = dev_name(dev); > + struct gpio_irq_chip *girq; > int err; > > idi48gpio = devm_kzalloc(dev, sizeof(*idi48gpio), GFP_KERNEL); > @@ -275,6 +287,16 @@ static int idi_48_probe(struct device *dev, unsigned int id) > idi48gpio->chip.get_multiple = idi_48_gpio_get_multiple; > idi48gpio->base = base[id]; > > + girq = &idi48gpio->chip.irq; > + girq->chip = &idi_48_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 = idi_48_irq_init_hw; > + > raw_spin_lock_init(&idi48gpio->lock); > spin_lock_init(&idi48gpio->ack_lock); > > @@ -284,17 +306,6 @@ static int idi_48_probe(struct device *dev, unsigned int id) > return err; > } > > - /* Disable IRQ by default */ > - outb(0, base[id] + 7); > - inb(base[id] + 7); > - > - err = gpiochip_irqchip_add(&idi48gpio->chip, &idi_48_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, irq[id], idi_48_irq_handler, IRQF_SHARED, > name, idi48gpio); > if (err) { > -- > 2.26.2 >
diff --git a/drivers/gpio/gpio-104-idi-48.c b/drivers/gpio/gpio-104-idi-48.c index d350ac0de06b..94c3a9bc4e75 100644 --- a/drivers/gpio/gpio-104-idi-48.c +++ b/drivers/gpio/gpio-104-idi-48.c @@ -247,10 +247,22 @@ static const char *idi48_names[IDI48_NGPIO] = { "Bit 18 B", "Bit 19 B", "Bit 20 B", "Bit 21 B", "Bit 22 B", "Bit 23 B" }; +static int idi_48_irq_init_hw(struct gpio_chip *gc) +{ + struct idi_48_gpio *const idi48gpio = gpiochip_get_data(gc); + + /* Disable IRQ by default */ + outb(0, idi48gpio->base + 7); + inb(idi48gpio->base + 7); + + return 0; +} + static int idi_48_probe(struct device *dev, unsigned int id) { struct idi_48_gpio *idi48gpio; const char *const name = dev_name(dev); + struct gpio_irq_chip *girq; int err; idi48gpio = devm_kzalloc(dev, sizeof(*idi48gpio), GFP_KERNEL); @@ -275,6 +287,16 @@ static int idi_48_probe(struct device *dev, unsigned int id) idi48gpio->chip.get_multiple = idi_48_gpio_get_multiple; idi48gpio->base = base[id]; + girq = &idi48gpio->chip.irq; + girq->chip = &idi_48_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 = idi_48_irq_init_hw; + raw_spin_lock_init(&idi48gpio->lock); spin_lock_init(&idi48gpio->ack_lock); @@ -284,17 +306,6 @@ static int idi_48_probe(struct device *dev, unsigned int id) return err; } - /* Disable IRQ by default */ - outb(0, base[id] + 7); - inb(base[id] + 7); - - err = gpiochip_irqchip_add(&idi48gpio->chip, &idi_48_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, irq[id], idi_48_irq_handler, IRQF_SHARED, name, idi48gpio); 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-104-idi-48.c | 33 ++++++++++++++++++++++----------- 1 file changed, 22 insertions(+), 11 deletions(-)