[people/ms/u-boot.git] / drivers / mtd / spi / sf-uclass.c

/*
 * Copyright (c) 2014 Google, Inc
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <spi.h>
#include <spi_flash.h>
#include <dm/device-internal.h>
#include "sf_internal.h"

DECLARE_GLOBAL_DATA_PTR;

int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf)
{
	return sf_get_ops(dev)->read(dev, offset, len, buf);
}

int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
		       const void *buf)
{
	return sf_get_ops(dev)->write(dev, offset, len, buf);
}

int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
{
	return sf_get_ops(dev)->erase(dev, offset, len);
}

/*
 * TODO(sjg@chromium.org): This is an old-style function. We should remove
 * it when all SPI flash drivers use dm
 */
struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
				  unsigned int max_hz, unsigned int spi_mode)
{
	struct udevice *dev;

	if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
		return NULL;

	return dev_get_uclass_priv(dev);
}

void spi_flash_free(struct spi_flash *flash)
{
	spi_flash_remove(flash->spi->dev);
}

int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
			   unsigned int max_hz, unsigned int spi_mode,
			   struct udevice **devp)
{
	struct spi_slave *slave;
	struct udevice *bus;
	char name[30], *str;
	int ret;

	snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
	str = strdup(name);
	ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
				  "spi_flash_std", str, &bus, &slave);
	if (ret)
		return ret;

	*devp = slave->dev;
	return 0;
}

int spi_flash_remove(struct udevice *dev)
{
	return device_remove(dev);
}

static int spi_flash_post_bind(struct udevice *dev)
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	struct dm_spi_flash_ops *ops = sf_get_ops(dev);
	static int reloc_done;

	if (!reloc_done) {
		if (ops->read)
			ops->read += gd->reloc_off;
		if (ops->write)
			ops->write += gd->reloc_off;
		if (ops->erase)
			ops->erase += gd->reloc_off;

		reloc_done++;
	}
#endif
	return 0;
}

UCLASS_DRIVER(spi_flash) = {
	.id		= UCLASS_SPI_FLASH,
	.name		= "spi_flash",
	.post_bind	= spi_flash_post_bind,
	.per_device_auto_alloc_size = sizeof(struct spi_flash),
};
Commit	Line	Data
4c2dbefd SG	1	/*
	2	* Copyright (c) 2014 Google, Inc
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
	7	#include <common.h>
	8	#include <dm.h>
	9	#include <spi.h>
	10	#include <spi_flash.h>
	11	#include <dm/device-internal.h>
	12	#include "sf_internal.h"
	13
2588f2dd MS	14	DECLARE_GLOBAL_DATA_PTR;
2588f2dd MS	15
8d987abc SG	16	int spi_flash_read_dm(struct udevice dev, u32 offset, size_t len, void buf)
	17	{
	18	return sf_get_ops(dev)->read(dev, offset, len, buf);
	19	}
	20
	21	int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
	22	const void *buf)
	23	{
	24	return sf_get_ops(dev)->write(dev, offset, len, buf);
	25	}
	26
	27	int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
	28	{
	29	return sf_get_ops(dev)->erase(dev, offset, len);
	30	}
	31
4c2dbefd SG	32	/*
	33	* TODO(sjg@chromium.org): This is an old-style function. We should remove
	34	* it when all SPI flash drivers use dm
	35	*/
	36	struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
	37	unsigned int max_hz, unsigned int spi_mode)
	38	{
	39	struct udevice *dev;
	40
	41	if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
	42	return NULL;
	43
e564f054	44	return dev_get_uclass_priv(dev);
4c2dbefd SG	45	}
	46
	47	void spi_flash_free(struct spi_flash *flash)
	48	{
	49	spi_flash_remove(flash->spi->dev);
	50	}
	51
	52	int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
	53	unsigned int max_hz, unsigned int spi_mode,
	54	struct udevice **devp)
	55	{
	56	struct spi_slave *slave;
	57	struct udevice *bus;
a5e1bcde	58	char name[30], *str;
4c2dbefd SG	59	int ret;
4c2dbefd SG	60
a5e1bcde	61	snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
4c2dbefd SG	62	str = strdup(name);
	63	ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
	64	"spi_flash_std", str, &bus, &slave);
	65	if (ret)
	66	return ret;
	67
	68	*devp = slave->dev;
	69	return 0;
	70	}
	71
	72	int spi_flash_remove(struct udevice *dev)
	73	{
	74	return device_remove(dev);
	75	}
	76
2588f2dd MS	77	static int spi_flash_post_bind(struct udevice *dev)
	78	{
	79	#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	80	struct dm_spi_flash_ops *ops = sf_get_ops(dev);
	81	static int reloc_done;
	82
	83	if (!reloc_done) {
	84	if (ops->read)
	85	ops->read += gd->reloc_off;
	86	if (ops->write)
	87	ops->write += gd->reloc_off;
	88	if (ops->erase)
	89	ops->erase += gd->reloc_off;
	90
	91	reloc_done++;
	92	}
	93	#endif
	94	return 0;
	95	}
	96
4c2dbefd SG	97	UCLASS_DRIVER(spi_flash) = {
	98	.id = UCLASS_SPI_FLASH,
	99	.name = "spi_flash",
2588f2dd	100	.post_bind = spi_flash_post_bind,
4c2dbefd SG	101	.per_device_auto_alloc_size = sizeof(struct spi_flash),
4c2dbefd SG	102	};