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gpio: add function _gpio_get_value

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Introduce the function _gpio_get_value to get the GPIO value
without check if it is reserved.
This patch prepare new ops introduction.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Patrick Delaunay
2020-01-13 11:35:02 +01:00
committed by Tom Rini
parent 9f2b066cda
commit 8a9140cd38
1 changed files with 10 additions and 4 deletions
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14
drivers/gpio/gpio-uclass.c
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@@ -476,18 +476,24 @@ int gpio_direction_output(unsigned gpio, int value)
desc.offset, value); desc.offset, value);
} }
int dm_gpio_get_value(const struct gpio_desc *desc) static int _gpio_get_value(const struct gpio_desc *desc)
{ {
int value; int value;
value = gpio_get_ops(desc->dev)->get_value(desc->dev, desc->offset);
return desc->flags & GPIOD_ACTIVE_LOW ? !value : value;
}
int dm_gpio_get_value(const struct gpio_desc *desc)
{
int ret; int ret;
ret = check_reserved(desc, "get_value"); ret = check_reserved(desc, "get_value");
if (ret) if (ret)
return ret; return ret;
value = gpio_get_ops(desc->dev)->get_value(desc->dev, desc->offset); return _gpio_get_value(desc);
return desc->flags & GPIOD_ACTIVE_LOW ? !value : value;
} }
int dm_gpio_set_value(const struct gpio_desc *desc, int value) int dm_gpio_set_value(const struct gpio_desc *desc, int value)