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ad525x_dpot: add support for one time programmable pots

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New parts supported:
	AD5170, AD5171, AD5172, AD5173, AD5273

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 14:33:16 -07:00
committed by Linus Torvalds
parent c74cba610c
commit 59592d0ccc
4 changed files with 149 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/misc/ad525x_dpot.h
+27 -13
View File
@@ -15,17 +15,18 @@
(((features) << 18) | (((wipers) & 0xFF) << 10) | \
((max_pos & 0xF) << 6) | (uid & 0x3F))
#define DPOT_UID(conf) (conf & 0x3F)
#define DPOT_MAX_POS(conf) ((conf >> 6) & 0xF)
#define DPOT_WIPERS(conf) ((conf >> 10) & 0xFF)
#define DPOT_FEAT(conf) (conf >> 18)
#define DPOT_UID(conf) (conf & 0x3F)
#define DPOT_MAX_POS(conf) ((conf >> 6) & 0xF)
#define DPOT_WIPERS(conf) ((conf >> 10) & 0xFF)
#define DPOT_FEAT(conf) (conf >> 18)
#define BRDAC0 (1 << 0)
#define BRDAC1 (1 << 1)
#define BRDAC2 (1 << 2)
#define BRDAC3 (1 << 3)
#define BRDAC4 (1 << 4)
#define BRDAC5 (1 << 5)
#define BRDAC0 (1 << 0)
#define BRDAC1 (1 << 1)
#define BRDAC2 (1 << 2)
#define BRDAC3 (1 << 3)
#define BRDAC4 (1 << 4)
#define BRDAC5 (1 << 5)
#define MAX_RDACS 6
#define F_CMD_INC (1 << 0) /* Features INC/DEC ALL, 6dB */
#define F_CMD_EEP (1 << 1) /* Features EEPROM */
@@ -116,6 +117,11 @@ enum dpot_devid {
AD5282_ID = DPOT_CONF(F_RDACS_RW, BRDAC0 | BRDAC1, 8, 41),
ADN2860_ID = DPOT_CONF(F_RDACS_RW_TOL | F_CMD_INC,
BRDAC0 | BRDAC1 | BRDAC2, 9, 42),
AD5273_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 43),
AD5171_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 6, 44),
AD5170_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0, 8, 45),
AD5172_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 46),
AD5173_ID = DPOT_CONF(F_RDACS_RW | F_CMD_OTP, BRDAC0 | BRDAC1, 8, 47),
};
#define DPOT_RDAC0 0
@@ -136,9 +142,11 @@ enum dpot_devid {
#define DPOT_TOL_RDAC5 (DPOT_REG_TOL | DPOT_RDAC5)
/* RDAC-to-EEPROM Interface Commands */
#define DPOT_ADDR_RDAC (0x00 << 5)
#define DPOT_ADDR_EEPROM (0x01 << 5)
#define DPOT_ADDR_CMD (0x80)
#define DPOT_ADDR_RDAC (0x0 << 5)
#define DPOT_ADDR_EEPROM (0x1 << 5)
#define DPOT_ADDR_OTP (0x1 << 6)
#define DPOT_ADDR_CMD (0x1 << 7)
#define DPOT_ADDR_OTP_EN (0x1 << 9)
#define DPOT_DEC_ALL_6DB (DPOT_ADDR_CMD | (0x4 << 3))
#define DPOT_INC_ALL_6DB (DPOT_ADDR_CMD | (0x9 << 3))
@@ -161,6 +169,12 @@ enum dpot_devid {
/* AD524x use special commands */
#define DPOT_AD5291_RDAC_AB 0x80
#define DPOT_AD5273_FUSE 0x80
#define DPOT_AD5270_2_3_FUSE 0x20
#define DPOT_AD5270_2_3_OW 0x08
#define DPOT_AD5272_3_A0 0x08
#define DPOT_AD5270_2FUSE 0x80
struct dpot_data;
struct ad_dpot_bus_ops {