diff options
| author | Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> | 2015-04-29 18:35:01 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-05-11 12:53:05 +0300 |
| commit | 442b2494b17d1a4f0a14721580271eb23ebffd42 (patch) | |
| tree | db63de03fa9672e820c5ce792605f7e1be23f90b /drivers/gpio | |
| parent | f30663398ee28ecd1b66ceeb6a73ef704d4abf78 (diff) | |
| download | linux-442b2494b17d1a4f0a14721580271eb23ebffd42.tar.xz | |
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 <vladimir_zapolskiy@mentor.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-mxc.c | 3 |
1 files changed, 2 insertions, 1 deletions
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; |