pinctrl: meson: Replace custom code by gpiochip_node_count() call

Since we have generic function to count GPIO controller nodes
under a given device, there is no need to open code it. Replace
custom code by gpiochip_node_count() call.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Andy Shevchenko 2022-04-01 13:36:02 +03:00
Родитель 6671d0bc17
Коммит edc5601db6
1 изменённых файлов: 12 добавлений и 16 удалений

Просмотреть файл

@ -49,6 +49,7 @@
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/seq_file.h>
@ -662,27 +663,22 @@ static struct regmap *meson_map_resource(struct meson_pinctrl *pc,
return devm_regmap_init_mmio(pc->dev, base, &meson_regmap_config);
}
static int meson_pinctrl_parse_dt(struct meson_pinctrl *pc,
struct device_node *node)
static int meson_pinctrl_parse_dt(struct meson_pinctrl *pc)
{
struct device_node *np, *gpio_np = NULL;
struct device_node *gpio_np;
unsigned int chips;
for_each_child_of_node(node, np) {
if (!of_find_property(np, "gpio-controller", NULL))
continue;
if (gpio_np) {
dev_err(pc->dev, "multiple gpio nodes\n");
of_node_put(np);
return -EINVAL;
}
gpio_np = np;
}
if (!gpio_np) {
chips = gpiochip_node_count(pc->dev);
if (!chips) {
dev_err(pc->dev, "no gpio node found\n");
return -EINVAL;
}
if (chips > 1) {
dev_err(pc->dev, "multiple gpio nodes\n");
return -EINVAL;
}
gpio_np = to_of_node(gpiochip_node_get_first(pc->dev));
pc->of_node = gpio_np;
pc->reg_mux = meson_map_resource(pc, gpio_np, "mux");
@ -751,7 +747,7 @@ int meson_pinctrl_probe(struct platform_device *pdev)
pc->dev = dev;
pc->data = (struct meson_pinctrl_data *) of_device_get_match_data(dev);
ret = meson_pinctrl_parse_dt(pc, dev->of_node);
ret = meson_pinctrl_parse_dt(pc);
if (ret)
return ret;