[PATCH, v1 1/1] gpio: aspeed: Add gpio base address reading
From: Hongwei Zhang <hidden>
Date: 2021-01-13 23:11:03
Also in:
linux-aspeed, linux-gpio, lkml, openbmc
Subsystem:
gpio subsystem, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Linus Torvalds
Add gpio base address reading in the driver; in old code, it just
returns -1 to gpio->chip.base.
Fixes: 7ee2d5b4d4340353 ("ARM: dts: nuvoton: Add Fii Kudo system")
Signed-off-by: Hongwei Zhang <redacted>
---
drivers/gpio/gpio-aspeed.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-aspeed.c b/drivers/gpio/gpio-aspeed.c
index d07bf2c3f136..4ebe4c40154c 100644
--- a/drivers/gpio/gpio-aspeed.c
+++ b/drivers/gpio/gpio-aspeed.c@@ -1140,7 +1140,7 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev) const struct of_device_id *gpio_id; struct aspeed_gpio *gpio; int rc, i, banks, err; - u32 ngpio; + u32 ngpio, base; gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL); if (!gpio)
@@ -1179,7 +1179,10 @@ static int __init aspeed_gpio_probe(struct platform_device *pdev) gpio->chip.set = aspeed_gpio_set; gpio->chip.set_config = aspeed_gpio_set_config; gpio->chip.label = dev_name(&pdev->dev); - gpio->chip.base = -1; + err = of_property_read_u32(pdev->dev.of_node, "base", &base); + gpio->chip.base = (u16) base; + if (err) + gpio->chip.base = -1; /* Allocate a cache of the output registers */ banks = DIV_ROUND_UP(gpio->chip.ngpio, 32);
--
2.17.1
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