| /* 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; |
| }; |