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14374fbb3f
These two devices have respectively 2048 and 4096 bits of storage, compared to 1024 for the 93c46. Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> Link: https://lore.kernel.org/r/20210511210727.24895-3-linkmauve@linkmauve.fr Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
32 lines
1 KiB
C
32 lines
1 KiB
C
/* 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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