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gpio: sunxi: Implement .set_flags

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This, along with gpio_flags_xlate(), allows the GPIO driver to handle
pull-up/down flags provided by consumer drivers or in the device tree.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Samuel Holland
2021-10-20 23:52:56 -05:00
committed by Andre Przywara
parent efdd656659
commit 35ae126c16
1 changed files with 27 additions and 35 deletions
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62
drivers/gpio/sunxi_gpio.c
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@@ -139,27 +139,6 @@ int sunxi_name_to_gpio(const char *name)
return ret ? ret : gpio;
}
static int sunxi_gpio_direction_input(struct udevice *dev, unsigned offset)
{
struct sunxi_gpio_plat *plat = dev_get_plat(dev);
sunxi_gpio_set_cfgbank(plat->regs, offset, SUNXI_GPIO_INPUT);
return 0;
}
static int sunxi_gpio_direction_output(struct udevice *dev, unsigned offset,
int value)
{
struct sunxi_gpio_plat *plat = dev_get_plat(dev);
u32 num = GPIO_NUM(offset);
sunxi_gpio_set_cfgbank(plat->regs, offset, SUNXI_GPIO_OUTPUT);
clrsetbits_le32(&plat->regs->dat, 1 << num, value ? (1 << num) : 0);
return 0;
}
static int sunxi_gpio_get_value(struct udevice *dev, unsigned offset)
{
struct sunxi_gpio_plat *plat = dev_get_plat(dev);
@@ -172,16 +151,6 @@ static int sunxi_gpio_get_value(struct udevice *dev, unsigned offset)
return dat & 0x1;
}
static int sunxi_gpio_set_value(struct udevice *dev, unsigned offset,
int value)
{
struct sunxi_gpio_plat *plat = dev_get_plat(dev);
u32 num = GPIO_NUM(offset);
clrsetbits_le32(&plat->regs->dat, 1 << num, value ? (1 << num) : 0);
return 0;
}
static int sunxi_gpio_get_function(struct udevice *dev, unsigned offset)
{
struct sunxi_gpio_plat *plat = dev_get_plat(dev);
@@ -205,18 +174,41 @@ static int sunxi_gpio_xlate(struct udevice *dev, struct gpio_desc *desc,
if (ret)
return ret;
desc->offset = args->args[1];
desc->flags = args->args[2] & GPIO_ACTIVE_LOW ? GPIOD_ACTIVE_LOW : 0;
desc->flags = gpio_flags_xlate(args->args[2]);
return 0;
}
static int sunxi_gpio_set_flags(struct udevice *dev, unsigned int offset,
ulong flags)
{
struct sunxi_gpio_plat *plat = dev_get_plat(dev);
if (flags & GPIOD_IS_OUT) {
u32 value = !!(flags & GPIOD_IS_OUT_ACTIVE);
u32 num = GPIO_NUM(offset);
clrsetbits_le32(&plat->regs->dat, 1 << num, value << num);
sunxi_gpio_set_cfgbank(plat->regs, offset, SUNXI_GPIO_OUTPUT);
} else if (flags & GPIOD_IS_IN) {
u32 pull = 0;
if (flags & GPIOD_PULL_UP)
pull = 1;
else if (flags & GPIOD_PULL_DOWN)
pull = 2;
sunxi_gpio_set_pull_bank(plat->regs, offset, pull);
sunxi_gpio_set_cfgbank(plat->regs, offset, SUNXI_GPIO_INPUT);
}
return 0;
}
static const struct dm_gpio_ops gpio_sunxi_ops = {
.direction_input = sunxi_gpio_direction_input,
.direction_output = sunxi_gpio_direction_output,
.get_value = sunxi_gpio_get_value,
.set_value = sunxi_gpio_set_value,
.get_function = sunxi_gpio_get_function,
.xlate = sunxi_gpio_xlate,
.set_flags = sunxi_gpio_set_flags,
};
/**