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| 2 |
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| 3 |
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| 4 | #ifndef _MFD_OCELOT_H
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| 5 | #define _MFD_OCELOT_H
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| 6 |
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| 7 | #include <linux/kconfig.h>
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| 8 |
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| 9 | struct device;
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| 10 | struct regmap;
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| 11 | struct resource;
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| 12 |
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| 13 | |
| 14 | * struct ocelot_ddata - Private data for an external Ocelot chip
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| 15 | * @gcb_regmap: General Configuration Block regmap. Used for
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| 16 | * operations like chip reset.
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| 17 | * @cpuorg_regmap: CPU Device Origin Block regmap. Used for operations
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| 18 | * like SPI bus configuration.
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| 19 | * @spi_padding_bytes: Number of padding bytes that must be thrown out before
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| 20 | * read data gets returned. This is calculated during
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| 21 | * initialization based on bus speed.
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| 22 | * @dummy_buf: Zero-filled buffer of spi_padding_bytes size. The dummy
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| 23 | * bytes that will be sent out between the address and
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| 24 | * data of a SPI read operation.
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| 25 |
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| 26 | struct ocelot_ddata {
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| 27 | struct regmap *gcb_regmap;
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| 28 | struct regmap *cpuorg_regmap;
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| 29 | int spi_padding_bytes;
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| 30 | void *dummy_buf;
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| 31 | };
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| 32 |
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| 33 | int ocelot_chip_reset(struct device *dev);
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| 34 | int ocelot_core_init(struct device *dev);
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| 35 |
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| 36 |
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| 37 | struct regmap *ocelot_spi_init_regmap(struct device *dev,
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| 38 | const struct resource *res);
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| 39 |
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| 40 | #define OCELOT_SPI_BYTE_ORDER_LE 0x00000000
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| 41 | #define OCELOT_SPI_BYTE_ORDER_BE 0x81818181
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| 42 |
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| 43 | #ifdef __LITTLE_ENDIAN
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| 44 | #define OCELOT_SPI_BYTE_ORDER OCELOT_SPI_BYTE_ORDER_LE
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| 45 | #else
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| 46 | #define OCELOT_SPI_BYTE_ORDER OCELOT_SPI_BYTE_ORDER_BE
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| 47 | #endif
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| 48 |
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| 49 | #endif
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