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 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 */ 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