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pinctrl: single: add get_pins_count operation 

It returns the number of selectable pins.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Dario Binacchi 2021-04-11 09:39:47 +02:00 committed by Lokesh Vutla
parent 180531fc2f
commit 1dd7ae20de
1 changed files with 37 additions and 0 deletions
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37
drivers/pinctrl/pinctrl-single.c
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@ -26,6 +26,16 @@ struct single_pdata {
bool bits_per_mux;
};
/**
* struct single_priv - private data
* @bits_per_pin: number of bits per pin
* @npins: number of selectable pins
*/
struct single_priv {
unsigned int bits_per_pin;
unsigned int npins;
};
/**
* struct single_fdt_pin_cfg - pin configuration
*
@ -194,6 +204,30 @@ static int single_set_state(struct udevice *dev,
return len;
}
static int single_get_pins_count(struct udevice *dev)
{
struct single_priv *priv = dev_get_priv(dev);
return priv->npins;
}
static int single_probe(struct udevice *dev)
{
struct single_pdata *pdata = dev_get_plat(dev);
struct single_priv *priv = dev_get_priv(dev);
u32 size;
size = pdata->offset + pdata->width / BITS_PER_BYTE;
priv->npins = size / (pdata->width / BITS_PER_BYTE);
if (pdata->bits_per_mux) {
priv->bits_per_pin = fls(pdata->mask);
priv->npins *= (pdata->width / priv->bits_per_pin);
}
dev_dbg(dev, "%d pins\n", priv->npins);
return 0;
}
static int single_of_to_plat(struct udevice *dev)
{
fdt_addr_t addr;
@ -244,6 +278,7 @@ static int single_of_to_plat(struct udevice *dev)
}
const struct pinctrl_ops single_pinctrl_ops = {
.get_pins_count = single_get_pins_count,
.set_state = single_set_state,
};
@ -258,5 +293,7 @@ U_BOOT_DRIVER(single_pinctrl) = {
.of_match = single_pinctrl_match,
.ops = &single_pinctrl_ops,
.plat_auto = sizeof(struct single_pdata),
.priv_auto = sizeof(struct single_priv),
.of_to_plat = single_of_to_plat,
.probe = single_probe,
};