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Subject[PATCH, v1 1/1] gpio: aspeed: Add gpio base address reading
Date
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 <hongweiz@ami.com>
---
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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