1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Module: eeprom_93xx46 4*4882a593Smuzhiyun * platform description for 93xx46 EEPROMs. 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #include <linux/gpio/consumer.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun struct eeprom_93xx46_platform_data { 9*4882a593Smuzhiyun unsigned char flags; 10*4882a593Smuzhiyun #define EE_ADDR8 0x01 /* 8 bit addr. cfg */ 11*4882a593Smuzhiyun #define EE_ADDR16 0x02 /* 16 bit addr. cfg */ 12*4882a593Smuzhiyun #define EE_READONLY 0x08 /* forbid writing */ 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun unsigned int quirks; 15*4882a593Smuzhiyun /* Single word read transfers only; no sequential read. */ 16*4882a593Smuzhiyun #define EEPROM_93XX46_QUIRK_SINGLE_WORD_READ (1 << 0) 17*4882a593Smuzhiyun /* Instructions such as EWEN are (addrlen + 2) in length. */ 18*4882a593Smuzhiyun #define EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH (1 << 1) 19*4882a593Smuzhiyun /* Add extra cycle after address during a read */ 20*4882a593Smuzhiyun #define EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE BIT(2) 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* 23*4882a593Smuzhiyun * optional hooks to control additional logic 24*4882a593Smuzhiyun * before and after spi transfer. 25*4882a593Smuzhiyun */ 26*4882a593Smuzhiyun void (*prepare)(void *); 27*4882a593Smuzhiyun void (*finish)(void *); 28*4882a593Smuzhiyun struct gpio_desc *select; 29*4882a593Smuzhiyun }; 30