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authorJeremy Kerr <jk@codeconstruct.com.au>2020-09-11 03:51:05 +0200
committerBartosz Golaszewski <bgolaszewski@baylibre.com>2020-09-24 15:10:56 +0200
commitbf0d394e885015941ed2d5724c0a6ed8d42dd95e (patch)
tree69e8e9d46fc90eebf204859594bb67d0fb1aae79 /drivers/gpio
parentgpio/aspeed-sgpio: enable access to all 80 input & output sgpios (diff)
downloadlinux-bf0d394e885015941ed2d5724c0a6ed8d42dd95e.tar.xz
linux-bf0d394e885015941ed2d5724c0a6ed8d42dd95e.zip
gpio/aspeed-sgpio: don't enable all interrupts by default
Currently, the IRQ setup for the SGPIO driver enables all interrupts in dual-edge trigger mode. Since the default handler is handle_bad_irq, any state change on input GPIOs will trigger bad IRQ warnings. This change applies sensible IRQ defaults: single-edge trigger, and all IRQs disabled. Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au> Fixes: 7db47faae79b ("gpio: aspeed: Add SGPIO driver") Reviewed-by: Joel Stanley <joel@jms.id.au> Acked-by: Andrew Jeffery <andrew@aj.id.au> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-aspeed-sgpio.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-aspeed-sgpio.c b/drivers/gpio/gpio-aspeed-sgpio.c
index 5d678dbf1a62..a0eb00c024f6 100644
--- a/drivers/gpio/gpio-aspeed-sgpio.c
+++ b/drivers/gpio/gpio-aspeed-sgpio.c
@@ -452,17 +452,15 @@ static int aspeed_sgpio_setup_irqs(struct aspeed_sgpio *gpio,
irq->parents = &gpio->irq;
irq->num_parents = 1;
- /* set IRQ settings and Enable Interrupt */
+ /* Apply default IRQ settings */
for (i = 0; i < ARRAY_SIZE(aspeed_sgpio_banks); i++) {
bank = &aspeed_sgpio_banks[i];
/* set falling or level-low irq */
iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type0));
/* trigger type is edge */
iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type1));
- /* dual edge trigger mode. */
- iowrite32(0xffffffff, bank_reg(gpio, bank, reg_irq_type2));
- /* enable irq */
- iowrite32(0xffffffff, bank_reg(gpio, bank, reg_irq_enable));
+ /* single edge trigger */
+ iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type2));
}
return 0;