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

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

#include <common.h>
#include <dm.h>
#include <malloc.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 log_ret(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 log_ret(sf_get_ops(dev)->write(dev, offset, len, buf));
}

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

int spl_flash_get_sw_write_prot(struct udevice *dev)
{
	struct dm_spi_flash_ops *ops = sf_get_ops(dev);

	if (!ops->get_sw_write_prot)
		return -ENOSYS;
	return log_ret(ops->get_sw_write_prot(dev));
}

/*
 * 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)
{
	device_remove(flash->spi->dev, DM_REMOVE_NORMAL);
}

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 *str;
	int ret;

#if defined(CONFIG_SPL_BUILD) && CONFIG_IS_ENABLED(USE_TINY_PRINTF)
	str = "spi_flash";
#else
	char name[30];

	snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
	str = strdup(name);
#endif
	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;
}

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
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
4c2dbefd SG	2	/*
4c2dbefd SG	3	* Copyright (c) 2014 Google, Inc
4c2dbefd SG	4	*/
	5
	6	#include <common.h>
	7	#include <dm.h>
336d4615	8	#include <malloc.h>
4c2dbefd SG	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)
8d987abc SG	17	{
5e24a2ef	18	return log_ret(sf_get_ops(dev)->read(dev, offset, len, buf));
8d987abc SG	19	}
	20
	21	int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
	22	const void *buf)
	23	{
5e24a2ef	24	return log_ret(sf_get_ops(dev)->write(dev, offset, len, buf));
8d987abc SG	25	}
	26
	27	int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
	28	{
5e24a2ef	29	return log_ret(sf_get_ops(dev)->erase(dev, offset, len));
8d987abc SG	30	}
8d987abc SG	31
a58986ca SG	32	int spl_flash_get_sw_write_prot(struct udevice *dev)
	33	{
	34	struct dm_spi_flash_ops *ops = sf_get_ops(dev);
	35
	36	if (!ops->get_sw_write_prot)
	37	return -ENOSYS;
	38	return log_ret(ops->get_sw_write_prot(dev));
	39	}
	40
4c2dbefd SG	41	/*
	42	* TODO(sjg@chromium.org): This is an old-style function. We should remove
	43	* it when all SPI flash drivers use dm
	44	*/
	45	struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
	46	unsigned int max_hz, unsigned int spi_mode)
	47	{
	48	struct udevice *dev;
	49
	50	if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
	51	return NULL;
	52
e564f054	53	return dev_get_uclass_priv(dev);
4c2dbefd SG	54	}
	55
	56	void spi_flash_free(struct spi_flash *flash)
	57	{
706865af	58	device_remove(flash->spi->dev, DM_REMOVE_NORMAL);
4c2dbefd SG	59	}
	60
	61	int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
	62	unsigned int max_hz, unsigned int spi_mode,
	63	struct udevice **devp)
	64	{
	65	struct spi_slave *slave;
	66	struct udevice *bus;
3c8fb12b	67	char *str;
4c2dbefd SG	68	int ret;
4c2dbefd SG	69
27084c03	70	#if defined(CONFIG_SPL_BUILD) && CONFIG_IS_ENABLED(USE_TINY_PRINTF)
3c8fb12b SG	71	str = "spi_flash";
	72	#else
	73	char name[30];
	74
a5e1bcde	75	snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
4c2dbefd	76	str = strdup(name);
3c8fb12b	77	#endif
4c2dbefd SG	78	ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
	79	"spi_flash_std", str, &bus, &slave);
	80	if (ret)
	81	return ret;
	82
	83	*devp = slave->dev;
	84	return 0;
	85	}
	86
2588f2dd MS	87	static int spi_flash_post_bind(struct udevice *dev)
	88	{
	89	#if defined(CONFIG_NEEDS_MANUAL_RELOC)
	90	struct dm_spi_flash_ops *ops = sf_get_ops(dev);
	91	static int reloc_done;
	92
	93	if (!reloc_done) {
	94	if (ops->read)
	95	ops->read += gd->reloc_off;
	96	if (ops->write)
	97	ops->write += gd->reloc_off;
	98	if (ops->erase)
	99	ops->erase += gd->reloc_off;
	100
	101	reloc_done++;
	102	}
	103	#endif
	104	return 0;
	105	}
	106
4c2dbefd SG	107	UCLASS_DRIVER(spi_flash) = {
	108	.id = UCLASS_SPI_FLASH,
	109	.name = "spi_flash",
2588f2dd	110	.post_bind = spi_flash_post_bind,
4c2dbefd SG	111	.per_device_auto_alloc_size = sizeof(struct spi_flash),
4c2dbefd SG	112	};