diff options
| author | Sergio Paracuellos <sergio.paracuellos@gmail.com> | 2022-09-13 18:46:38 +0200 |
|---|---|---|
| committer | Bartosz Golaszewski <brgl@bgdev.pl> | 2022-09-14 14:18:08 +0200 |
| commit | 09eed5a1ed3c752892663976837eb4244c2f1984 (patch) | |
| tree | 9a306e419ef2334c779b5b142ef1a747018869b0 /drivers | |
| parent | 94e9bc73d85aa6ecfe249e985ff57abe0ab35f34 (diff) | |
| download | lwn-09eed5a1ed3c752892663976837eb4244c2f1984.tar.gz lwn-09eed5a1ed3c752892663976837eb4244c2f1984.zip | |
gpio: mt7621: Make the irqchip immutable
Commit 6c846d026d49 ("gpio: Don't fiddle with irqchips marked as
immutable") added a warning to indicate if the gpiolib is altering the
internals of irqchips. Following this change the following warnings
are now observed for the mt7621 driver:
gpio gpiochip0: (1e000600.gpio-bank0): not an immutable chip, please consider fixing it!
gpio gpiochip1: (1e000600.gpio-bank1): not an immutable chip, please consider fixing it!
gpio gpiochip2: (1e000600.gpio-bank2): not an immutable chip, please consider fixing it!
Fix this by making the irqchip in the mt7621 driver immutable.
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpio-mt7621.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/drivers/gpio/gpio-mt7621.c b/drivers/gpio/gpio-mt7621.c index d8a26e503ca5..f163f5ca857b 100644 --- a/drivers/gpio/gpio-mt7621.c +++ b/drivers/gpio/gpio-mt7621.c @@ -112,6 +112,8 @@ mediatek_gpio_irq_unmask(struct irq_data *d) unsigned long flags; u32 rise, fall, high, low; + gpiochip_enable_irq(gc, d->hwirq); + spin_lock_irqsave(&rg->lock, flags); rise = mtk_gpio_r32(rg, GPIO_REG_REDGE); fall = mtk_gpio_r32(rg, GPIO_REG_FEDGE); @@ -143,6 +145,8 @@ mediatek_gpio_irq_mask(struct irq_data *d) mtk_gpio_w32(rg, GPIO_REG_HLVL, high & ~BIT(pin)); mtk_gpio_w32(rg, GPIO_REG_LLVL, low & ~BIT(pin)); spin_unlock_irqrestore(&rg->lock, flags); + + gpiochip_disable_irq(gc, d->hwirq); } static int @@ -204,6 +208,16 @@ mediatek_gpio_xlate(struct gpio_chip *chip, return gpio % MTK_BANK_WIDTH; } +static const struct irq_chip mt7621_irq_chip = { + .name = "mt7621-gpio", + .irq_mask_ack = mediatek_gpio_irq_mask, + .irq_mask = mediatek_gpio_irq_mask, + .irq_unmask = mediatek_gpio_irq_unmask, + .irq_set_type = mediatek_gpio_irq_type, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, +}; + static int mediatek_gpio_bank_probe(struct device *dev, int bank) { @@ -238,11 +252,6 @@ mediatek_gpio_bank_probe(struct device *dev, int bank) return -ENOMEM; rg->chip.offset = bank * MTK_BANK_WIDTH; - rg->irq_chip.name = dev_name(dev); - rg->irq_chip.irq_unmask = mediatek_gpio_irq_unmask; - rg->irq_chip.irq_mask = mediatek_gpio_irq_mask; - rg->irq_chip.irq_mask_ack = mediatek_gpio_irq_mask; - rg->irq_chip.irq_set_type = mediatek_gpio_irq_type; if (mtk->gpio_irq) { struct gpio_irq_chip *girq; @@ -262,7 +271,7 @@ mediatek_gpio_bank_probe(struct device *dev, int bank) } girq = &rg->chip.irq; - girq->chip = &rg->irq_chip; + gpio_irq_chip_set_chip(girq, &mt7621_irq_chip); /* This will let us handle the parent IRQ in the driver */ girq->parent_handler = NULL; girq->num_parents = 0; |