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29 lines
879 B
29 lines
879 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Module: eeprom_93xx46 |
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* platform description for 93xx46 EEPROMs. |
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*/ |
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#include <linux/gpio/consumer.h> |
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struct eeprom_93xx46_platform_data { |
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unsigned char flags; |
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#define EE_ADDR8 0x01 /* 8 bit addr. cfg */ |
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#define EE_ADDR16 0x02 /* 16 bit addr. cfg */ |
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#define EE_READONLY 0x08 /* forbid writing */ |
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unsigned int quirks; |
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/* Single word read transfers only; no sequential read. */ |
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#define EEPROM_93XX46_QUIRK_SINGLE_WORD_READ (1 << 0) |
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/* Instructions such as EWEN are (addrlen + 2) in length. */ |
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#define EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH (1 << 1) |
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/* Add extra cycle after address during a read */ |
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#define EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE BIT(2) |
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/* |
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* optional hooks to control additional logic |
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* before and after spi transfer. |
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*/ |
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void (*prepare)(void *); |
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void (*finish)(void *); |
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struct gpio_desc *select; |
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};
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