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| author | Patrick Delaunay <patrick.delaunay@st.com> | 2020-06-04 14:30:30 +0200 |
|---|---|---|
| committer | Patrick Delaunay <patrick.delaunay@st.com> | 2020-07-07 16:01:23 +0200 |
| commit | 22b3fe4224a9929d025767ec600226de984d0246 (patch) | |
| tree | 345556183f53869f12a6e2fc3318097fc5439d2e /drivers | |
| parent | fabb6e14c86d8d38beaaade8bc18a678cdc06c0a (diff) | |
| download | u-boot-22b3fe4224a9929d025767ec600226de984d0246.zip u-boot-22b3fe4224a9929d025767ec600226de984d0246.tar.gz u-boot-22b3fe4224a9929d025767ec600226de984d0246.tar.bz2 | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/pinctrl-stmfx.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-stmfx.c b/drivers/pinctrl/pinctrl-stmfx.c index 5d15424..88df9e6 100644 --- a/drivers/pinctrl/pinctrl-stmfx.c +++ b/drivers/pinctrl/pinctrl-stmfx.c @@ -153,6 +153,42 @@ static int stmfx_gpio_direction_output(struct udevice *dev, return stmfx_write_reg(dev, STMFX_REG_GPIO_DIR, offset, 1); } +static int stmfx_gpio_set_dir_flags(struct udevice *dev, unsigned int offset, + ulong flags) +{ + int ret = -ENOTSUPP; + + if (flags & GPIOD_IS_OUT) { + if (flags & GPIOD_OPEN_SOURCE) + return -ENOTSUPP; + if (flags & GPIOD_OPEN_DRAIN) + ret = stmfx_conf_set_type(dev, offset, 0); + else /* PUSH-PULL */ + ret = stmfx_conf_set_type(dev, offset, 1); + if (ret) + return ret; + ret = stmfx_gpio_direction_output(dev, offset, + GPIOD_FLAGS_OUTPUT(flags)); + } else if (flags & GPIOD_IS_IN) { + ret = stmfx_gpio_direction_input(dev, offset); + if (ret) + return ret; + if (flags & GPIOD_PULL_UP) { + ret = stmfx_conf_set_type(dev, offset, 1); + if (ret) + return ret; + ret = stmfx_conf_set_pupd(dev, offset, 1); + } else if (flags & GPIOD_PULL_DOWN) { + ret = stmfx_conf_set_type(dev, offset, 1); + if (ret) + return ret; + ret = stmfx_conf_set_pupd(dev, offset, 0); + } + } + + return ret; +} + static int stmfx_gpio_probe(struct udevice *dev) { struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev); @@ -181,6 +217,7 @@ static const struct dm_gpio_ops stmfx_gpio_ops = { .get_function = stmfx_gpio_get_function, .direction_input = stmfx_gpio_direction_input, .direction_output = stmfx_gpio_direction_output, + .set_dir_flags = stmfx_gpio_set_dir_flags, }; U_BOOT_DRIVER(stmfx_gpio) = { |