ad525x_dpot: add support for SPI parts
Split the bus logic out into separate files so that we can handle I2C and
SPI busses independently. The new SPI bus logic brings in support for a
lot more parts:
AD5160, AD5161, AD5162, AD5165, AD5200, AD5201, AD5203,
AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
AD7376, AD8400, AD8402, AD8403, ADN2850
[randy.dunlap@oracle.com: fix ad525X_dpot build]
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-24 21:33:14 +00:00
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/*
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* Driver for the Analog Devices digital potentiometers
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*
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* Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#ifndef _AD_DPOT_H_
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#define _AD_DPOT_H_
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#include <linux/types.h>
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#define DPOT_CONF(features, wipers, max_pos, uid) \
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(((features) << 18) | (((wipers) & 0xFF) << 10) | \
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((max_pos & 0xF) << 6) | (uid & 0x3F))
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2010-05-24 21:33:16 +00:00
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#define DPOT_UID(conf) (conf & 0x3F)
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#define DPOT_MAX_POS(conf) ((conf >> 6) & 0xF)
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#define DPOT_WIPERS(conf) ((conf >> 10) & 0xFF)
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#define DPOT_FEAT(conf) (conf >> 18)
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#define BRDAC0 (1 << 0)
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#define BRDAC1 (1 << 1)
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#define BRDAC2 (1 << 2)
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#define BRDAC3 (1 << 3)
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#define BRDAC4 (1 << 4)
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#define BRDAC5 (1 << 5)
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#define MAX_RDACS 6
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ad525x_dpot: add support for SPI parts
Split the bus logic out into separate files so that we can handle I2C and
SPI busses independently. The new SPI bus logic brings in support for a
lot more parts:
AD5160, AD5161, AD5162, AD5165, AD5200, AD5201, AD5203,
AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
AD7376, AD8400, AD8402, AD8403, ADN2850
[randy.dunlap@oracle.com: fix ad525X_dpot build]
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-24 21:33:14 +00:00
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#define F_CMD_INC (1 << 0) /* Features INC/DEC ALL, 6dB */
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#define F_CMD_EEP (1 << 1) /* Features EEPROM */
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2010-05-24 21:33:15 +00:00
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#define F_CMD_OTP (1 << 2) /* Features OTP */
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#define F_CMD_TOL (1 << 3) /* RDACS feature Tolerance REG */
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#define F_RDACS_RW (1 << 4) /* RDACS are Read/Write */
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#define F_RDACS_WONLY (1 << 5) /* RDACS are Write only */
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#define F_AD_APPDATA (1 << 6) /* RDAC Address append to data */
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#define F_SPI_8BIT (1 << 7) /* All SPI XFERS are 8-bit */
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#define F_SPI_16BIT (1 << 8) /* All SPI XFERS are 16-bit */
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#define F_SPI_24BIT (1 << 9) /* All SPI XFERS are 24-bit */
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ad525x_dpot: add support for SPI parts
Split the bus logic out into separate files so that we can handle I2C and
SPI busses independently. The new SPI bus logic brings in support for a
lot more parts:
AD5160, AD5161, AD5162, AD5165, AD5200, AD5201, AD5203,
AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
AD7376, AD8400, AD8402, AD8403, ADN2850
[randy.dunlap@oracle.com: fix ad525X_dpot build]
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-24 21:33:14 +00:00
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#define F_RDACS_RW_TOL (F_RDACS_RW | F_CMD_EEP | F_CMD_TOL)
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#define F_RDACS_RW_EEP (F_RDACS_RW | F_CMD_EEP)
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#define F_SPI (F_SPI_8BIT | F_SPI_16BIT | F_SPI_24BIT)
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enum dpot_devid {
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AD5258_ID = DPOT_CONF(F_RDACS_RW_TOL, BRDAC0, 6, 0), /* I2C */
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AD5259_ID = DPOT_CONF(F_RDACS_RW_TOL, BRDAC0, 8, 1),
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AD5251_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
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BRDAC0 | BRDAC3, 6, 2),
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AD5252_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
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BRDAC0 | BRDAC3, 8, 3),
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AD5253_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
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BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 4),
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AD5254_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
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BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 5),
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AD5255_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
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BRDAC0 | BRDAC1 | BRDAC2, 9, 6),
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AD5160_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 8, 7), /* SPI */
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AD5161_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 8, 8),
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AD5162_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1, 8, 9),
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AD5165_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 8, 10),
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AD5200_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 8, 11),
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AD5201_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 5, 12),
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AD5203_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 13),
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AD5204_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 14),
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AD5206_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3 | BRDAC4 | BRDAC5,
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8, 15),
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AD5207_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1, 8, 16),
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AD5231_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
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BRDAC0, 10, 17),
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AD5232_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_16BIT,
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BRDAC0 | BRDAC1, 8, 18),
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AD5233_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_16BIT,
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BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 6, 19),
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AD5235_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
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BRDAC0 | BRDAC1, 10, 20),
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AD5260_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 8, 21),
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AD5262_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1, 8, 22),
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AD5263_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1 | BRDAC2 | BRDAC3, 8, 23),
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AD5290_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 8, 24),
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AD5291_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT, BRDAC0, 8, 25),
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AD5292_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT, BRDAC0, 10, 26),
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AD5293_ID = DPOT_CONF(F_RDACS_RW | F_SPI_16BIT, BRDAC0, 10, 27),
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AD7376_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 7, 28),
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AD8400_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_8BIT,
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BRDAC0, 8, 29),
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AD8402_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1, 8, 30),
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AD8403_ID = DPOT_CONF(F_RDACS_WONLY | F_AD_APPDATA | F_SPI_16BIT,
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BRDAC0 | BRDAC1 | BRDAC2, 8, 31),
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ADN2850_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
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BRDAC0 | BRDAC1, 10, 32),
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2010-05-24 21:33:15 +00:00
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AD5241_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 33),
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AD5242_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 34),
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AD5243_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 35),
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AD5245_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 36),
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AD5246_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 37),
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AD5247_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 38),
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AD5248_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 39),
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2010-05-24 21:33:15 +00:00
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AD5280_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 40),
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AD5282_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 41),
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ADN2860_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
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BRDAC0 | BRDAC1 | BRDAC2, 9, 42),
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2010-05-24 21:33:16 +00:00
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AD5273_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 43),
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AD5171_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 44),
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AD5170_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 8, 45),
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AD5172_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 46),
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AD5173_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 47),
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ad525x_dpot: add support for SPI parts
Split the bus logic out into separate files so that we can handle I2C and
SPI busses independently. The new SPI bus logic brings in support for a
lot more parts:
AD5160, AD5161, AD5162, AD5165, AD5200, AD5201, AD5203,
AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
AD7376, AD8400, AD8402, AD8403, ADN2850
[randy.dunlap@oracle.com: fix ad525X_dpot build]
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-24 21:33:14 +00:00
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};
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#define DPOT_RDAC0 0
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#define DPOT_RDAC1 1
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#define DPOT_RDAC2 2
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#define DPOT_RDAC3 3
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#define DPOT_RDAC4 4
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#define DPOT_RDAC5 5
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#define DPOT_RDAC_MASK 0x1F
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#define DPOT_REG_TOL 0x18
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#define DPOT_TOL_RDAC0 (DPOT_REG_TOL | DPOT_RDAC0)
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#define DPOT_TOL_RDAC1 (DPOT_REG_TOL | DPOT_RDAC1)
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#define DPOT_TOL_RDAC2 (DPOT_REG_TOL | DPOT_RDAC2)
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#define DPOT_TOL_RDAC3 (DPOT_REG_TOL | DPOT_RDAC3)
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#define DPOT_TOL_RDAC4 (DPOT_REG_TOL | DPOT_RDAC4)
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#define DPOT_TOL_RDAC5 (DPOT_REG_TOL | DPOT_RDAC5)
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/* RDAC-to-EEPROM Interface Commands */
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2010-05-24 21:33:16 +00:00
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#define DPOT_ADDR_RDAC (0x0 << 5)
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#define DPOT_ADDR_EEPROM (0x1 << 5)
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#define DPOT_ADDR_OTP (0x1 << 6)
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#define DPOT_ADDR_CMD (0x1 << 7)
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#define DPOT_ADDR_OTP_EN (0x1 << 9)
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ad525x_dpot: add support for SPI parts
Split the bus logic out into separate files so that we can handle I2C and
SPI busses independently. The new SPI bus logic brings in support for a
lot more parts:
AD5160, AD5161, AD5162, AD5165, AD5200, AD5201, AD5203,
AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
AD7376, AD8400, AD8402, AD8403, ADN2850
[randy.dunlap@oracle.com: fix ad525X_dpot build]
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-24 21:33:14 +00:00
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#define DPOT_DEC_ALL_6DB (DPOT_ADDR_CMD | (0x4 << 3))
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#define DPOT_INC_ALL_6DB (DPOT_ADDR_CMD | (0x9 << 3))
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#define DPOT_DEC_ALL (DPOT_ADDR_CMD | (0x6 << 3))
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#define DPOT_INC_ALL (DPOT_ADDR_CMD | (0xB << 3))
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#define DPOT_SPI_RDAC 0xB0
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#define DPOT_SPI_EEPROM 0x30
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#define DPOT_SPI_READ_RDAC 0xA0
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#define DPOT_SPI_READ_EEPROM 0x90
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#define DPOT_SPI_DEC_ALL_6DB 0x50
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#define DPOT_SPI_INC_ALL_6DB 0xD0
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#define DPOT_SPI_DEC_ALL 0x70
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#define DPOT_SPI_INC_ALL 0xF0
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/* AD5291/2/3 use special commands */
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#define DPOT_AD5291_RDAC 0x01
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#define DPOT_AD5291_READ_RDAC 0x02
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2010-05-24 21:33:15 +00:00
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/* AD524x use special commands */
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#define DPOT_AD5291_RDAC_AB 0x80
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2010-05-24 21:33:16 +00:00
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#define DPOT_AD5273_FUSE 0x80
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#define DPOT_AD5270_2_3_FUSE 0x20
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#define DPOT_AD5270_2_3_OW 0x08
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#define DPOT_AD5272_3_A0 0x08
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#define DPOT_AD5270_2FUSE 0x80
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ad525x_dpot: add support for SPI parts
Split the bus logic out into separate files so that we can handle I2C and
SPI busses independently. The new SPI bus logic brings in support for a
lot more parts:
AD5160, AD5161, AD5162, AD5165, AD5200, AD5201, AD5203,
AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
AD7376, AD8400, AD8402, AD8403, ADN2850
[randy.dunlap@oracle.com: fix ad525X_dpot build]
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-24 21:33:14 +00:00
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struct dpot_data;
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struct ad_dpot_bus_ops {
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int (*read_d8) (void *client);
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int (*read_r8d8) (void *client, u8 reg);
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int (*read_r8d16) (void *client, u8 reg);
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int (*write_d8) (void *client, u8 val);
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int (*write_r8d8) (void *client, u8 reg, u8 val);
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int (*write_r8d16) (void *client, u8 reg, u16 val);
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};
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struct ad_dpot_bus_data {
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void *client;
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const struct ad_dpot_bus_ops *bops;
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};
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struct ad_dpot_id {
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char *name;
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unsigned long devid;
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};
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int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id);
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int ad_dpot_remove(struct device *dev);
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#endif
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