diff options
| author | Bharat Gooty <bharat.gooty@broadcom.com> | 2021-08-24 13:16:32 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2021-10-05 15:43:03 +0300 |
| commit | fd921d20379b2c4544f62a94d642be6aeeb481f0 (patch) | |
| tree | 89cd7ac407b5023ca380259a58e0f915ee8f0097 /drivers/pinctrl | |
| parent | 62f86c6a01690b473545fd6159c680a50b1bfeea (diff) | |
| download | u-boot-fd921d20379b2c4544f62a94d642be6aeeb481f0.tar.xz | |
pinctrl: single: Add request() api
Add pinctrl_ops->request api to configure pctrl
pad register in gpio mode.
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Signed-off-by: Bharat Gooty <bharat.gooty@broadcom.com>
Acked-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/pinctrl-single.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 0f96cd5870..8fc07e3498 100644 --- a/drivers/pinctrl/pinctrl-single.c +++ b/drivers/pinctrl/pinctrl-single.c @@ -250,6 +250,39 @@ static int single_get_pin_muxing(struct udevice *dev, unsigned int pin, return 0; } +static int single_request(struct udevice *dev, int pin, int flags) +{ + struct single_priv *priv = dev_get_priv(dev); + struct single_pdata *pdata = dev_get_plat(dev); + struct single_gpiofunc_range *frange = NULL; + struct list_head *pos, *tmp; + phys_addr_t reg; + int mux_bytes = 0; + u32 data; + + /* If function mask is null, needn't enable it. */ + if (!pdata->mask) + return -ENOTSUPP; + + list_for_each_safe(pos, tmp, &priv->gpiofuncs) { + frange = list_entry(pos, struct single_gpiofunc_range, node); + if ((pin >= frange->offset + frange->npins) || + pin < frange->offset) + continue; + + mux_bytes = pdata->width / BITS_PER_BYTE; + reg = pdata->base + pin * mux_bytes; + + data = single_read(dev, reg); + data &= ~pdata->mask; + data |= frange->gpiofunc; + single_write(dev, data, reg); + break; + } + + return 0; +} + static struct single_func *single_allocate_function(struct udevice *dev, unsigned int group_pins) { @@ -587,6 +620,7 @@ const struct pinctrl_ops single_pinctrl_ops = { .get_pin_name = single_get_pin_name, .set_state = single_set_state, .get_pin_muxing = single_get_pin_muxing, + .request = single_request, }; static const struct udevice_id single_pinctrl_match[] = { |