1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 206b4501eSAnatolij Gustschin /* 306b4501eSAnatolij Gustschin * Module: eeprom_93xx46 406b4501eSAnatolij Gustschin * platform description for 93xx46 EEPROMs. 506b4501eSAnatolij Gustschin */ 6e0552573SFabio Estevam #include <linux/gpio/consumer.h> 73ca9b1acSCory Tusar 806b4501eSAnatolij Gustschin struct eeprom_93xx46_platform_data { 906b4501eSAnatolij Gustschin unsigned char flags; 1006b4501eSAnatolij Gustschin #define EE_ADDR8 0x01 /* 8 bit addr. cfg */ 1106b4501eSAnatolij Gustschin #define EE_ADDR16 0x02 /* 16 bit addr. cfg */ 1206b4501eSAnatolij Gustschin #define EE_READONLY 0x08 /* forbid writing */ 13*14374fbbSEmmanuel Gil Peyrot #define EE_SIZE1K 0x10 /* 1 kb of data, that is a 93xx46 */ 14*14374fbbSEmmanuel Gil Peyrot #define EE_SIZE2K 0x20 /* 2 kb of data, that is a 93xx56 */ 15*14374fbbSEmmanuel Gil Peyrot #define EE_SIZE4K 0x40 /* 4 kb of data, that is a 93xx66 */ 1606b4501eSAnatolij Gustschin 17e1379b56SCory Tusar unsigned int quirks; 18e1379b56SCory Tusar /* Single word read transfers only; no sequential read. */ 19e1379b56SCory Tusar #define EEPROM_93XX46_QUIRK_SINGLE_WORD_READ (1 << 0) 20e1379b56SCory Tusar /* Instructions such as EWEN are (addrlen + 2) in length. */ 21e1379b56SCory Tusar #define EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH (1 << 1) 22f6f1f8e6SAswath Govindraju /* Add extra cycle after address during a read */ 23f6f1f8e6SAswath Govindraju #define EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE BIT(2) 24e1379b56SCory Tusar 2506b4501eSAnatolij Gustschin /* 2606b4501eSAnatolij Gustschin * optional hooks to control additional logic 2706b4501eSAnatolij Gustschin * before and after spi transfer. 2806b4501eSAnatolij Gustschin */ 2906b4501eSAnatolij Gustschin void (*prepare)(void *); 3006b4501eSAnatolij Gustschin void (*finish)(void *); 313ca9b1acSCory Tusar struct gpio_desc *select; 3206b4501eSAnatolij Gustschin }; 33