1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Module: eeprom_93xx46
4 * platform description for 93xx46 EEPROMs.
6 #include <linux/gpio/consumer.h>
8 struct eeprom_93xx46_platform_data {
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 */
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)
26 * optional hooks to control additional logic
27 * before and after spi transfer.
29 void (*prepare)(void *);
30 void (*finish)(void *);
31 struct gpio_desc *select;