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gpio: remove the open_drain API and ops

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This patch removes the ops get_open_drain/set_open_drain
and the API dm_gpio_get_open_drain/dm_gpio_set_open_drain.

The ops only provided in one driver (mpc8xxx gpio) and the
associated API is never called in boards.

This patch prepare a more generic set/get_dir_flags ops,
including the open drain property.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay
2020-01-13 11:35:00 +01:00
committed by Tom Rini
parent 277a0ad8f5
commit e3f3a121d8
6 changed files with 0 additions and 154 deletions
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34
include/asm-generic/gpio.h
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@@ -253,8 +253,6 @@ struct dm_gpio_ops {
int value);
int (*get_value)(struct udevice *dev, unsigned offset);
int (*set_value)(struct udevice *dev, unsigned offset, int value);
int (*get_open_drain)(struct udevice *dev, unsigned offset);
int (*set_open_drain)(struct udevice *dev, unsigned offset, int value);
/**
* get_function() Get the GPIO function
*
@@ -585,38 +583,6 @@ int dm_gpio_get_value(const struct gpio_desc *desc);
int dm_gpio_set_value(const struct gpio_desc *desc, int value);
/**
* dm_gpio_get_open_drain() - Check if open-drain-mode of a GPIO is active
*
* This checks if open-drain-mode for a GPIO is enabled or not. This method is
* optional.
*
* @desc: GPIO description containing device, offset and flags,
* previously returned by gpio_request_by_name()
* @return Value of open drain mode for GPIO (0 for inactive, 1 for active) or
* -ve on error
*/
int dm_gpio_get_open_drain(struct gpio_desc *desc);
/**
* dm_gpio_set_open_drain() - Switch open-drain-mode of a GPIO on or off
*
* This enables or disables open-drain mode for a GPIO. This method is
* optional; if the driver does not support it, nothing happens when the method
* is called.
*
* In open-drain mode, instead of actively driving the output (Push-pull
* output), the GPIO's pin is connected to the collector (for a NPN transistor)
* or the drain (for a MOSFET) of a transistor, respectively. The pin then
* either forms an open circuit or a connection to ground, depending on the
* state of the transistor.
*
* @desc: GPIO description containing device, offset and flags,
* previously returned by gpio_request_by_name()
* @return 0 if OK, -ve on error
*/
int dm_gpio_set_open_drain(struct gpio_desc *desc, int value);
/**
* dm_gpio_set_dir() - Set the direction for a GPIO
*