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https://github.com/brain-hackers/u-boot-brain
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gpio: stmfx: add ops set_dir_flag
Manage the flags for GPIO configuration: - open_drain, push_pull - pull_up, pull_down Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
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@ -153,6 +153,42 @@ static int stmfx_gpio_direction_output(struct udevice *dev,
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return stmfx_write_reg(dev, STMFX_REG_GPIO_DIR, offset, 1);
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}
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static int stmfx_gpio_set_dir_flags(struct udevice *dev, unsigned int offset,
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ulong flags)
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{
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int ret = -ENOTSUPP;
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if (flags & GPIOD_IS_OUT) {
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if (flags & GPIOD_OPEN_SOURCE)
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return -ENOTSUPP;
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if (flags & GPIOD_OPEN_DRAIN)
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ret = stmfx_conf_set_type(dev, offset, 0);
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else /* PUSH-PULL */
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ret = stmfx_conf_set_type(dev, offset, 1);
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if (ret)
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return ret;
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ret = stmfx_gpio_direction_output(dev, offset,
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GPIOD_FLAGS_OUTPUT(flags));
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} else if (flags & GPIOD_IS_IN) {
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ret = stmfx_gpio_direction_input(dev, offset);
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if (ret)
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return ret;
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if (flags & GPIOD_PULL_UP) {
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ret = stmfx_conf_set_type(dev, offset, 1);
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if (ret)
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return ret;
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ret = stmfx_conf_set_pupd(dev, offset, 1);
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} else if (flags & GPIOD_PULL_DOWN) {
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ret = stmfx_conf_set_type(dev, offset, 1);
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if (ret)
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return ret;
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ret = stmfx_conf_set_pupd(dev, offset, 0);
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}
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}
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return ret;
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}
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static int stmfx_gpio_probe(struct udevice *dev)
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{
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struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
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@ -181,6 +217,7 @@ static const struct dm_gpio_ops stmfx_gpio_ops = {
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.get_function = stmfx_gpio_get_function,
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.direction_input = stmfx_gpio_direction_input,
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.direction_output = stmfx_gpio_direction_output,
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.set_dir_flags = stmfx_gpio_set_dir_flags,
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};
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U_BOOT_DRIVER(stmfx_gpio) = {
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