From: Vladimir Zapolskiy Date: Wed, 29 Apr 2015 15:35:01 +0000 (+0300) Subject: gpio: mxc: read output value from GPIO_DR register X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=442b2494b17d1a4f0a14721580271eb23ebffd42;p=deliverable%2Flinux.git gpio: mxc: read output value from GPIO_DR register All supported iMX GPIO controllers store configured GPIO output value in GPIO_DR data register, which is represented by GPIO generic reg_set. Provide a BGPIOF_READ_OUTPUT_REG_SET flag to bgpio_init() to allow correct getting of previously set output value. Signed-off-by: Vladimir Zapolskiy Signed-off-by: Linus Walleij --- diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c index 9f7446a7ac64..38daa640e1b5 100644 --- a/drivers/gpio/gpio-mxc.c +++ b/drivers/gpio/gpio-mxc.c @@ -450,7 +450,8 @@ static int mxc_gpio_probe(struct platform_device *pdev) err = bgpio_init(&port->bgc, &pdev->dev, 4, port->base + GPIO_PSR, port->base + GPIO_DR, NULL, - port->base + GPIO_GDIR, NULL, 0); + port->base + GPIO_GDIR, NULL, + BGPIOF_READ_OUTPUT_REG_SET); if (err) goto out_bgio;