1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Module: eeprom_93xx46
4 * platform description for 93xx46 EEPROMs.
5 */
6#include <linux/gpio/consumer.h>
7
8struct 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 */
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 */
16
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)
22/* Add extra cycle after address during a read */
23#define EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE		BIT(2)
24
25	/*
26	 * optional hooks to control additional logic
27	 * before and after spi transfer.
28	 */
29	void (*prepare)(void *);
30	void (*finish)(void *);
31	struct gpio_desc *select;
32};
33