From: Bharat Gooty bharat.gooty@broadcom.com
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
Signed-off-by: Roman Bacik roman.bacik@broadcom.com ---
(no changes since v2)
Changes in v2: - simplify comment before struct single_gpiofunc_range - add pinctrl-single binding document from Linux - return error code from single-probe()
drivers/pinctrl/pinctrl-single.c | 34 ++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c index 5ed225f2a839..a4ec6a54fdcd 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) { @@ -591,6 +624,7 @@ 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[] = {