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ad525x_dpot: add support for AD524x pots

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New parts supported:
	AD5241, AD5242, AD5243, AD5245, AD5246, AD5247, AD5248

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Hennerich
2010-05-24 14:33:15 -07:00
committed by Linus Torvalds
parent 6c536e4ce8
commit e3ae68476c
4 changed files with 173 additions and 94 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/misc/ad525x_dpot.h
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@ -29,13 +29,14 @@
#define F_CMD_INC (1 << 0) /* Features INC/DEC ALL, 6dB */
#define F_CMD_EEP (1 << 1) /* Features EEPROM */
#define F_CMD_TOL (1 << 2) /* RDACS are Read/Write + Tolerance REG */
#define F_RDACS_RW (1 << 3) /* RDACS are Read/Write + Tolerance REG */
#define F_RDACS_WONLY (1 << 4) /* RDACS are Write only */
#define F_AD_APPDATA (1 << 5) /* RDAC Address append to data */
#define F_SPI_8BIT (1 << 6) /* All SPI XFERS are 8-bit */
#define F_SPI_16BIT (1 << 7) /* All SPI XFERS are 16-bit */
#define F_SPI_24BIT (1 << 8) /* All SPI XFERS are 24-bit */
#define F_CMD_OTP (1 << 2) /* Features OTP */
#define F_CMD_TOL (1 << 3) /* RDACS feature Tolerance REG */
#define F_RDACS_RW (1 << 4) /* RDACS are Read/Write */
#define F_RDACS_WONLY (1 << 5) /* RDACS are Write only */
#define F_AD_APPDATA (1 << 6) /* RDAC Address append to data */
#define F_SPI_8BIT (1 << 7) /* All SPI XFERS are 8-bit */
#define F_SPI_16BIT (1 << 8) /* All SPI XFERS are 16-bit */
#define F_SPI_24BIT (1 << 9) /* All SPI XFERS are 24-bit */
#define F_RDACS_RW_TOL (F_RDACS_RW | F_CMD_EEP | F_CMD_TOL)
#define F_RDACS_RW_EEP (F_RDACS_RW | F_CMD_EEP)
@ -104,6 +105,15 @@ enum dpot_devid {
BRDAC0 | BRDAC1 | BRDAC2, 8, 31),
ADN2850_ID = DPOT_CONF(F_RDACS_RW_EEP | F_CMD_INC | F_SPI_24BIT,
BRDAC0 | BRDAC1, 10, 32),
AD5241_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 33),
AD5242_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 34),
AD5243_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 35),
AD5245_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 36),
AD5246_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 37),
AD5247_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 7, 38),
AD5248_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 39),
};
#define DPOT_RDAC0 0
@ -146,6 +156,9 @@ enum dpot_devid {
#define DPOT_AD5291_RDAC 0x01
#define DPOT_AD5291_READ_RDAC 0x02
/* AD524x use special commands */
#define DPOT_AD5291_RDAC_AB 0x80
struct dpot_data;
struct ad_dpot_bus_ops {