| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Module: eeprom_93xx46 |
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| 4 | * platform description for 93xx46 EEPROMs. |
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| 5 | */ |
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| 6 | #include <linux/gpio/consumer.h> |
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| 7 | |
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| 8 | struct eeprom_93xx46_platform_data { |
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| 9 | unsigned char flags; |
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| 10 | #define EE_ADDR8 0x01 /* 8 bit addr. cfg */ |
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| 11 | #define EE_ADDR16 0x02 /* 16 bit addr. cfg */ |
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| 12 | #define EE_READONLY 0x08 /* forbid writing */ |
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| 13 | #define EE_SIZE1K 0x10 /* 1 kb of data, that is a 93xx46 */ |
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| 14 | #define EE_SIZE2K 0x20 /* 2 kb of data, that is a 93xx56 */ |
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| 15 | #define EE_SIZE4K 0x40 /* 4 kb of data, that is a 93xx66 */ |
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| 16 | |
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| 17 | unsigned int quirks; |
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| 18 | /* Single word read transfers only; no sequential read. */ |
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| 19 | #define EEPROM_93XX46_QUIRK_SINGLE_WORD_READ (1 << 0) |
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| 20 | /* Instructions such as EWEN are (addrlen + 2) in length. */ |
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| 21 | #define EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH (1 << 1) |
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| 22 | /* Add extra cycle after address during a read */ |
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| 23 | #define BIT(2) |
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| 24 | |
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| 25 | /* |
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| 26 | * optional hooks to control additional logic |
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| 27 | * before and after spi transfer. |
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| 28 | */ |
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| 29 | void (*prepare)(void *); |
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| 30 | void (*finish)(void *); |
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| 31 | struct gpio_desc *select; |
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| 32 | }; |
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| 33 | |
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