| Message ID | 20200722103915.162156-1-linus.walleij@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | gpio: 104-dio-48e: Use irqchip template | expand |
On Wed, Jul 22, 2020 at 12:39:15PM +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-dio-48e.c | 35 ++++++++++++++++++++++----------- > 1 file changed, 23 insertions(+), 12 deletions(-) > > diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c > index 1f7d9bbec0fc..7a9021c4fa48 100644 > --- a/drivers/gpio/gpio-104-dio-48e.c > +++ b/drivers/gpio/gpio-104-dio-48e.c > @@ -368,10 +368,21 @@ static const char *dio48e_names[DIO48E_NGPIO] = { > "PPI Group 1 Port C 5", "PPI Group 1 Port C 6", "PPI Group 1 Port C 7" > }; > > +static int dio48e_irq_init_hw(struct gpio_chip *gc) > +{ > + struct dio48e_gpio *const dio48egpio = gpiochip_get_data(gc); > + > + /* Disable IRQ by default */ > + inb(dio48egpio->base + 0xB); > + > + return 0; > +} > + > static int dio48e_probe(struct device *dev, unsigned int id) > { > struct dio48e_gpio *dio48egpio; > const char *const name = dev_name(dev); > + struct gpio_irq_chip *girq; > int err; > > dio48egpio = devm_kzalloc(dev, sizeof(*dio48egpio), GFP_KERNEL); > @@ -399,13 +410,17 @@ static int dio48e_probe(struct device *dev, unsigned int id) > dio48egpio->chip.set_multiple = dio48e_gpio_set_multiple; > dio48egpio->base = base[id]; > > - raw_spin_lock_init(&dio48egpio->lock); > + girq = &dio48egpio->chip.irq; > + girq->chip = &dio48e_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 = dio48e_irq_init_hw; > > - err = devm_gpiochip_add_data(dev, &dio48egpio->chip, dio48egpio); > - if (err) { > - dev_err(dev, "GPIO registering failed (%d)\n", err); > - return err; > - } > + raw_spin_lock_init(&dio48egpio->lock); > > /* initialize all GPIO as output */ > outb(0x80, base[id] + 3); > @@ -419,13 +434,9 @@ static int dio48e_probe(struct device *dev, unsigned int id) > outb(0x00, base[id] + 6); > outb(0x00, base[id] + 7); > > - /* disable IRQ by default */ > - inb(base[id] + 0xB); > - > - err = gpiochip_irqchip_add(&dio48egpio->chip, &dio48e_irqchip, 0, > - handle_edge_irq, IRQ_TYPE_NONE); > + err = devm_gpiochip_add_data(dev, &dio48egpio->chip, dio48egpio); > if (err) { > - dev_err(dev, "Could not add irqchip (%d)\n", err); > + dev_err(dev, "GPIO registering failed (%d)\n", err); > return err; > } > > -- > 2.26.2 >
diff --git a/drivers/gpio/gpio-104-dio-48e.c b/drivers/gpio/gpio-104-dio-48e.c index 1f7d9bbec0fc..7a9021c4fa48 100644 --- a/drivers/gpio/gpio-104-dio-48e.c +++ b/drivers/gpio/gpio-104-dio-48e.c @@ -368,10 +368,21 @@ static const char *dio48e_names[DIO48E_NGPIO] = { "PPI Group 1 Port C 5", "PPI Group 1 Port C 6", "PPI Group 1 Port C 7" }; +static int dio48e_irq_init_hw(struct gpio_chip *gc) +{ + struct dio48e_gpio *const dio48egpio = gpiochip_get_data(gc); + + /* Disable IRQ by default */ + inb(dio48egpio->base + 0xB); + + return 0; +} + static int dio48e_probe(struct device *dev, unsigned int id) { struct dio48e_gpio *dio48egpio; const char *const name = dev_name(dev); + struct gpio_irq_chip *girq; int err; dio48egpio = devm_kzalloc(dev, sizeof(*dio48egpio), GFP_KERNEL); @@ -399,13 +410,17 @@ static int dio48e_probe(struct device *dev, unsigned int id) dio48egpio->chip.set_multiple = dio48e_gpio_set_multiple; dio48egpio->base = base[id]; - raw_spin_lock_init(&dio48egpio->lock); + girq = &dio48egpio->chip.irq; + girq->chip = &dio48e_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 = dio48e_irq_init_hw; - err = devm_gpiochip_add_data(dev, &dio48egpio->chip, dio48egpio); - if (err) { - dev_err(dev, "GPIO registering failed (%d)\n", err); - return err; - } + raw_spin_lock_init(&dio48egpio->lock); /* initialize all GPIO as output */ outb(0x80, base[id] + 3); @@ -419,13 +434,9 @@ static int dio48e_probe(struct device *dev, unsigned int id) outb(0x00, base[id] + 6); outb(0x00, base[id] + 7); - /* disable IRQ by default */ - inb(base[id] + 0xB); - - err = gpiochip_irqchip_add(&dio48egpio->chip, &dio48e_irqchip, 0, - handle_edge_irq, IRQ_TYPE_NONE); + err = devm_gpiochip_add_data(dev, &dio48egpio->chip, dio48egpio); if (err) { - dev_err(dev, "Could not add irqchip (%d)\n", err); + dev_err(dev, "GPIO registering failed (%d)\n", err); return 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-dio-48e.c | 35 ++++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 12 deletions(-)