include/linux/eeprom_93xx46.h

   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
  14         unsigned int    quirks;
  15 /* Single word read transfers only; no sequential read. */
  16 #define EEPROM_93XX46_QUIRK_SINGLE_WORD_READ            (1 << 0)
  17 /* Instructions such as EWEN are (addrlen + 2) in length. */
  18 #define EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH          (1 << 1)
  19
  20         /*
  21          * optional hooks to control additional logic
  22          * before and after spi transfer.
  23          */
  24         void (*prepare)(void *);
  25         void (*finish)(void *);
  26         struct gpio_desc *select;
  27 };