C++ (Cpp) bgpio_setup_direction示例

示例#1

文件： gpio-generic.c 项目： 24hours/linux

int bgpio_init(struct bgpio_chip *bgc, struct device *dev,
	       unsigned long sz, void __iomem *dat, void __iomem *set,
	       void __iomem *clr, void __iomem *dirout, void __iomem *dirin,
	       unsigned long flags)
{
	int ret;

	if (!is_power_of_2(sz))
		return -EINVAL;

	bgc->bits = sz * 8;
	if (bgc->bits > BITS_PER_LONG)
		return -EINVAL;

	spin_lock_init(&bgc->lock);
	bgc->gc.dev = dev;
	bgc->gc.label = dev_name(dev);
	bgc->gc.base = -1;
	bgc->gc.ngpio = bgc->bits;
	bgc->gc.request = bgpio_request;

	ret = bgpio_setup_io(bgc, dat, set, clr);
	if (ret)
		return ret;

	ret = bgpio_setup_accessors(dev, bgc, flags & BGPIOF_BIG_ENDIAN,
				    flags & BGPIOF_BIG_ENDIAN_BYTE_ORDER);
	if (ret)
		return ret;

	ret = bgpio_setup_direction(bgc, dirout, dirin);
	if (ret)
		return ret;

	bgc->data = bgc->read_reg(bgc->reg_dat);
	if (bgc->gc.set == bgpio_set_set &&
			!(flags & BGPIOF_UNREADABLE_REG_SET))
		bgc->data = bgc->read_reg(bgc->reg_set);
	if (bgc->reg_dir && !(flags & BGPIOF_UNREADABLE_REG_DIR))
		bgc->dir = bgc->read_reg(bgc->reg_dir);

	return ret;
}

示例#2

文件： gpio-mmio.c 项目： AK101111/linux

int bgpio_init(struct gpio_chip *gc, struct device *dev,
	       unsigned long sz, void __iomem *dat, void __iomem *set,
	       void __iomem *clr, void __iomem *dirout, void __iomem *dirin,
	       unsigned long flags)
{
	int ret;

	if (!is_power_of_2(sz))
		return -EINVAL;

	gc->bgpio_bits = sz * 8;
	if (gc->bgpio_bits > BITS_PER_LONG)
		return -EINVAL;

	spin_lock_init(&gc->bgpio_lock);
	gc->parent = dev;
	gc->label = dev_name(dev);
	gc->base = -1;
	gc->ngpio = gc->bgpio_bits;
	gc->request = bgpio_request;

	ret = bgpio_setup_io(gc, dat, set, clr, flags);
	if (ret)
		return ret;

	ret = bgpio_setup_accessors(dev, gc, flags & BGPIOF_BIG_ENDIAN,
				    flags & BGPIOF_BIG_ENDIAN_BYTE_ORDER);
	if (ret)
		return ret;

	ret = bgpio_setup_direction(gc, dirout, dirin, flags);
	if (ret)
		return ret;

	gc->bgpio_data = gc->read_reg(gc->reg_dat);
	if (gc->set == bgpio_set_set &&
			!(flags & BGPIOF_UNREADABLE_REG_SET))
		gc->bgpio_data = gc->read_reg(gc->reg_set);
	if (gc->reg_dir && !(flags & BGPIOF_UNREADABLE_REG_DIR))
		gc->bgpio_dir = gc->read_reg(gc->reg_dir);

	return ret;
}

示例#3

文件： gpio-generic.c 项目： MinimumLaw/ravion-barebox

int bgpio_init(struct bgpio_chip *bgc, struct device_d *dev,
	       unsigned int sz, void __iomem *dat, void __iomem *set,
	       void __iomem *clr, void __iomem *dirout, void __iomem *dirin,
	       unsigned long flags)
{
	int ret;

	if ((sz > 4) || !is_power_of_2(sz))
		return -EINVAL;

	bgc->bits = sz * 8;
	bgc->gc.ngpio = bgc->bits;
	bgc->gc.base = -1;
	bgc->gc.dev = dev;
	bgc->gc.ops = &bgc->ops;

	ret = bgpio_setup_io(bgc, dat, set, clr);
	if (ret)
		return ret;

	ret = bgpio_setup_accessors(dev, bgc, flags & BGPIOF_BIG_ENDIAN);
	if (ret)
		return ret;

	ret = bgpio_setup_direction(bgc, dirout, dirin);
	if (ret)
		return ret;

	bgc->data = bgc->read_reg(bgc->reg_dat);

	if (bgc->gc.ops->set == bgpio_set_set && !(flags &
	    BGPIOF_UNREADABLE_REG_SET))
		bgc->data = bgc->read_reg(bgc->reg_set);

	if (bgc->reg_dir && !(flags & BGPIOF_UNREADABLE_REG_DIR))
		bgc->dir = bgc->read_reg(bgc->reg_dir);

	return ret;
}

示例#4

文件： gpio-generic.c 项目： openube/android_kernel_sony_c2305

int bgpio_init(struct bgpio_chip *bgc, struct device *dev,
	       unsigned long sz, void __iomem *dat, void __iomem *set,
	       void __iomem *clr, void __iomem *dirout, void __iomem *dirin,
	       bool big_endian)
{
	int ret;

	if (!is_power_of_2(sz))
		return -EINVAL;

	bgc->bits = sz * 8;
	if (bgc->bits > BITS_PER_LONG)
		return -EINVAL;

	spin_lock_init(&bgc->lock);
	bgc->gc.dev = dev;
	bgc->gc.label = dev_name(dev);
	bgc->gc.base = -1;
	bgc->gc.ngpio = bgc->bits;

	ret = bgpio_setup_io(bgc, dat, set, clr);
	if (ret)
		return ret;

	ret = bgpio_setup_accessors(dev, bgc, big_endian);
	if (ret)
		return ret;

	ret = bgpio_setup_direction(bgc, dirout, dirin);
	if (ret)
		return ret;

	bgc->data = bgc->read_reg(bgc->reg_dat);

	return ret;
}