ad525x_dpot: add support for one time programmable pots

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>

1 files changed, 28 insertions, 14 deletions

diff --git a/drivers/misc/ad525x_dpot.h b/drivers/misc/ad525x_dpot.h
index d789a95cbe09..78b89fd2e2fd 100644
--- a/drivers/misc/ad525x_dpot.h
+++ b/drivers/misc/ad525x_dpot.h
@@ -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 BRDAC0  (1 << 0)
-#define BRDAC1  (1 << 1)
-#define BRDAC2  (1 << 2)
-#define BRDAC3  (1 << 3)
-#define BRDAC4  (1 << 4)
-#define BRDAC5  (1 << 5)
+#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 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 {