| Message ID | 20200722101938.151265-1-linus.walleij@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | gpio: ws16c48: Use irqchip template | expand |
On Wed, Jul 22, 2020 at 12:19:38PM +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-ws16c48.c | 39 ++++++++++++++++++++++++------------- > 1 file changed, 25 insertions(+), 14 deletions(-) > > diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c > index cb510df2b014..2d89d0529135 100644 > --- a/drivers/gpio/gpio-ws16c48.c > +++ b/drivers/gpio/gpio-ws16c48.c > @@ -365,10 +365,25 @@ static const char *ws16c48_names[WS16C48_NGPIO] = { > "Port 5 Bit 4", "Port 5 Bit 5", "Port 5 Bit 6", "Port 5 Bit 7" > }; > > +static int ws16c48_irq_init_hw(struct gpio_chip *gc) > +{ > + struct ws16c48_gpio *const ws16c48gpio = gpiochip_get_data(gc); > + > + /* Disable IRQ by default */ > + outb(0x80, ws16c48gpio->base + 7); > + outb(0, ws16c48gpio->base + 8); > + outb(0, ws16c48gpio->base + 9); > + outb(0, ws16c48gpio->base + 10); > + outb(0xC0, ws16c48gpio->base + 7); > + > + return 0; > +} > + > static int ws16c48_probe(struct device *dev, unsigned int id) > { > struct ws16c48_gpio *ws16c48gpio; > const char *const name = dev_name(dev); > + struct gpio_irq_chip *girq; > int err; > > ws16c48gpio = devm_kzalloc(dev, sizeof(*ws16c48gpio), GFP_KERNEL); > @@ -396,6 +411,16 @@ static int ws16c48_probe(struct device *dev, unsigned int id) > ws16c48gpio->chip.set_multiple = ws16c48_gpio_set_multiple; > ws16c48gpio->base = base[id]; > > + girq = &ws16c48gpio->chip.irq; > + girq->chip = &ws16c48_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 = ws16c48_irq_init_hw; > + > raw_spin_lock_init(&ws16c48gpio->lock); > > err = devm_gpiochip_add_data(dev, &ws16c48gpio->chip, ws16c48gpio); > @@ -404,20 +429,6 @@ static int ws16c48_probe(struct device *dev, unsigned int id) > return err; > } > > - /* Disable IRQ by default */ > - outb(0x80, base[id] + 7); > - outb(0, base[id] + 8); > - outb(0, base[id] + 9); > - outb(0, base[id] + 10); > - outb(0xC0, base[id] + 7); > - > - err = gpiochip_irqchip_add(&ws16c48gpio->chip, &ws16c48_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], ws16c48_irq_handler, IRQF_SHARED, > name, ws16c48gpio); > if (err) { > -- > 2.26.2 >
diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c index cb510df2b014..2d89d0529135 100644 --- a/drivers/gpio/gpio-ws16c48.c +++ b/drivers/gpio/gpio-ws16c48.c @@ -365,10 +365,25 @@ static const char *ws16c48_names[WS16C48_NGPIO] = { "Port 5 Bit 4", "Port 5 Bit 5", "Port 5 Bit 6", "Port 5 Bit 7" }; +static int ws16c48_irq_init_hw(struct gpio_chip *gc) +{ + struct ws16c48_gpio *const ws16c48gpio = gpiochip_get_data(gc); + + /* Disable IRQ by default */ + outb(0x80, ws16c48gpio->base + 7); + outb(0, ws16c48gpio->base + 8); + outb(0, ws16c48gpio->base + 9); + outb(0, ws16c48gpio->base + 10); + outb(0xC0, ws16c48gpio->base + 7); + + return 0; +} + static int ws16c48_probe(struct device *dev, unsigned int id) { struct ws16c48_gpio *ws16c48gpio; const char *const name = dev_name(dev); + struct gpio_irq_chip *girq; int err; ws16c48gpio = devm_kzalloc(dev, sizeof(*ws16c48gpio), GFP_KERNEL); @@ -396,6 +411,16 @@ static int ws16c48_probe(struct device *dev, unsigned int id) ws16c48gpio->chip.set_multiple = ws16c48_gpio_set_multiple; ws16c48gpio->base = base[id]; + girq = &ws16c48gpio->chip.irq; + girq->chip = &ws16c48_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 = ws16c48_irq_init_hw; + raw_spin_lock_init(&ws16c48gpio->lock); err = devm_gpiochip_add_data(dev, &ws16c48gpio->chip, ws16c48gpio); @@ -404,20 +429,6 @@ static int ws16c48_probe(struct device *dev, unsigned int id) return err; } - /* Disable IRQ by default */ - outb(0x80, base[id] + 7); - outb(0, base[id] + 8); - outb(0, base[id] + 9); - outb(0, base[id] + 10); - outb(0xC0, base[id] + 7); - - err = gpiochip_irqchip_add(&ws16c48gpio->chip, &ws16c48_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], ws16c48_irq_handler, IRQF_SHARED, name, ws16c48gpio); 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-ws16c48.c | 39 ++++++++++++++++++++++++------------- 1 file changed, 25 insertions(+), 14 deletions(-)