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gpio: mmio: use new generic GPIO chip API

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Convert the driver to using the new generic GPIO chip interfaces from
linux/gpio/generic.h.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250910-gpio-mmio-gpio-conv-part4-v2-14-f3d1a4c57124@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Bartosz Golaszewski 2025-09-10 09:12:50 +02:00
parent ae9a52990b
commit e43e94fa19
1 changed files with 21 additions and 8 deletions
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29
drivers/gpio/gpio-mmio.c
View File

@ -57,6 +57,7 @@ o ` ~~~~\___/~~~~ ` controller in FPGA is ,.`
#include <linux/types.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/generic.h>
#include "gpiolib.h"
@ -737,6 +738,8 @@ MODULE_DEVICE_TABLE(of, bgpio_of_match);
static int bgpio_pdev_probe(struct platform_device *pdev)
{
struct gpio_generic_chip_config config;
struct gpio_generic_chip *gen_gc;
struct device *dev = &pdev->dev;
struct resource *r;
void __iomem *dat;
@ -748,7 +751,6 @@ static int bgpio_pdev_probe(struct platform_device *pdev)
unsigned long flags = 0;
unsigned int base;
int err;
struct gpio_chip *gc;
const char *label;
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dat");
@ -777,8 +779,8 @@ static int bgpio_pdev_probe(struct platform_device *pdev)
if (IS_ERR(dirin))
return PTR_ERR(dirin);
gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
if (!gc)
gen_gc = devm_kzalloc(&pdev->dev, sizeof(*gen_gc), GFP_KERNEL);
if (!gen_gc)
return -ENOMEM;
if (device_is_big_endian(dev))
@ -787,13 +789,24 @@ static int bgpio_pdev_probe(struct platform_device *pdev)
if (device_property_read_bool(dev, "no-output"))
flags |= BGPIOF_NO_OUTPUT;
err = bgpio_init(gc, dev, sz, dat, set, clr, dirout, dirin, flags);
config = (struct gpio_generic_chip_config) {
.dev = dev,
.sz = sz,
.dat = dat,
.set = set,
.clr = clr,
.dirout = dirout,
.dirin = dirin,
.flags = flags,
};
err = gpio_generic_chip_init(gen_gc, &config);
if (err)
return err;
err = device_property_read_string(dev, "label", &label);
if (!err)
gc->label = label;
gen_gc->gc.label = label;
/*
* This property *must not* be used in device-tree sources, it's only
@ -801,11 +814,11 @@ static int bgpio_pdev_probe(struct platform_device *pdev)
*/
err = device_property_read_u32(dev, "gpio-mmio,base", &base);
if (!err && base <= INT_MAX)
gc->base = base;
gen_gc->gc.base = base;
platform_set_drvdata(pdev, gc);
platform_set_drvdata(pdev, &gen_gc->gc);
return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
return devm_gpiochip_add_data(&pdev->dev, &gen_gc->gc, NULL);
}
static const struct platform_device_id bgpio_id_table[] = {