33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
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/* 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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#define EE_SIZE1K 0x10 /* 1 kb of data, that is a 93xx46 */
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#define EE_SIZE2K 0x20 /* 2 kb of data, that is a 93xx56 */
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#define EE_SIZE4K 0x40 /* 4 kb of data, that is a 93xx66 */
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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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