#include <stdint.h>
#include <stdlib.h>

#include <flash.h>

int default_flash_is_erased(struct flash_dev *dev, uint32_t addr)
{
	uint8_t data[1 << dev->log2_block_size];
	size_t i;

	if (flash_read(dev, addr << dev->log2_block_size, data, sizeof(data)) == 0)
		return 0;

	for (i = 0; i < sizeof(data); ++i) {
		if (data[i] != 0xff)
			return 0;
	}

	return 1;
}

void flash_release(struct flash_dev *dev)
{
	if (!dev)
		return;

	dev->ops->release(dev);
}

size_t flash_get_size(struct flash_dev *dev)
{
	if (!dev)
		return 0;

	return dev->ops->get_size(dev);
}

size_t flash_get_capacity(struct flash_dev *dev)
{
	if (!dev)
		return 0;

	return dev->ops->get_capacity(dev);
}

size_t flash_read(struct flash_dev *dev, uint32_t addr, void *data, size_t len)
{
	if (!dev)
		return -1;

	return dev->ops->read(dev, addr, data, len);
}

size_t flash_write(struct flash_dev *dev, uint32_t addr, const void *data,
	size_t len)
{
	if (!dev)
		return -1;

	return dev->ops->write(dev, addr, data, len);
}

int flash_copy(struct flash_dev *dev, uint32_t dst, uint32_t src, size_t len)
{
	if (!dev)
		return -1;

	return dev->ops->copy(dev, dst, src, len);
}

int flash_is_erased(struct flash_dev *dev, uint32_t addr, size_t len)
{
	if (!dev)
		return -1;

	while (len--) {
		if (!dev->ops->is_erased(dev, addr))
			return 0;

		++addr;
	}

	return 1;
}

int flash_erase(struct flash_dev *dev, uint32_t addr, size_t len)
{
	if (!dev)
		return -1;

	while (len--) {
		if (dev->ops->erase(dev, addr) < 0)
			return -1;

		++addr;
	}

	return 0;
}