[linux-block.git] / include / linux / eeprom_93xx46.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Module: eeprom_93xx46
 * platform description for 93xx46 EEPROMs.
 */
#include <linux/gpio/consumer.h>

struct eeprom_93xx46_platform_data {
	unsigned char	flags;
#define EE_ADDR8	0x01		/*  8 bit addr. cfg */
#define EE_ADDR16	0x02		/* 16 bit addr. cfg */
#define EE_READONLY	0x08		/* forbid writing */
#define EE_SIZE1K	0x10		/* 1 kb of data, that is a 93xx46 */
#define EE_SIZE2K	0x20		/* 2 kb of data, that is a 93xx56 */
#define EE_SIZE4K	0x40		/* 4 kb of data, that is a 93xx66 */

	unsigned int	quirks;
/* Single word read transfers only; no sequential read. */
#define EEPROM_93XX46_QUIRK_SINGLE_WORD_READ		(1 << 0)
/* Instructions such as EWEN are (addrlen + 2) in length. */
#define EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH		(1 << 1)
/* Add extra cycle after address during a read */
#define EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE		BIT(2)

	/*
	 * optional hooks to control additional logic
	 * before and after spi transfer.
	 */
	void (*prepare)(void *);
	void (*finish)(void *);
	struct gpio_desc *select;
};
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
06b4501e AG	2	/*
	3	* Module: eeprom_93xx46
	4	* platform description for 93xx46 EEPROMs.
	5	*/
e0552573	6	#include <linux/gpio/consumer.h>
3ca9b1ac	7
06b4501e AG	8	struct eeprom_93xx46_platform_data {
	9	unsigned char flags;
	10	#define EE_ADDR8 0x01 /* 8 bit addr. cfg */
	11	#define EE_ADDR16 0x02 /* 16 bit addr. cfg */
	12	#define EE_READONLY 0x08 /* forbid writing */
14374fbb EGP	13	#define EE_SIZE1K 0x10 /* 1 kb of data, that is a 93xx46 */
	14	#define EE_SIZE2K 0x20 /* 2 kb of data, that is a 93xx56 */
	15	#define EE_SIZE4K 0x40 /* 4 kb of data, that is a 93xx66 */
06b4501e	16
e1379b56 CT	17	unsigned int quirks;
	18	/* Single word read transfers only; no sequential read. */
	19	#define EEPROM_93XX46_QUIRK_SINGLE_WORD_READ (1 << 0)
	20	/* Instructions such as EWEN are (addrlen + 2) in length. */
	21	#define EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH (1 << 1)
f6f1f8e6 AG	22	/* Add extra cycle after address during a read */
f6f1f8e6 AG	23	#define EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE BIT(2)
e1379b56	24
06b4501e AG	25	/*
	26	* optional hooks to control additional logic
	27	* before and after spi transfer.
	28	*/
	29	void (prepare)(void );
	30	void (finish)(void );
3ca9b1ac	31	struct gpio_desc *select;
06b4501e	32	};