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pinctrl: single: Add request() api

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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>
This commit is contained in:
Bharat Gooty 2021-08-24 15:46:32 +05:30 committed by Tom Rini
parent 62f86c6a01
commit fd921d2037
1 changed files with 34 additions and 0 deletions
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34
drivers/pinctrl/pinctrl-single.c
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@ -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[] = {