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Date: Sun, 9 May 2010 06:15:28 -0400
From: Mike Frysinger <vapier@...too.org>
To: linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>
Cc: uclinux-dist-devel@...ckfin.uclinux.org,
Michael Hennerich <michael.hennerich@...log.com>
Subject: [PATCH 5/6] ad525x_dpot: add support for ADN2860 and AD528x pots
From: Michael Hennerich <michael.hennerich@...log.com>
New parts supported:
AD5280, AD5282, ADN2860
Signed-off-by: Michael Hennerich <michael.hennerich@...log.com>
Signed-off-by: Mike Frysinger <vapier@...too.org>
---
drivers/misc/Kconfig | 3 ++-
drivers/misc/ad525x_dpot-i2c.c | 3 +++
drivers/misc/ad525x_dpot.c | 28 +++++++++++++++++-----------
drivers/misc/ad525x_dpot.h | 6 ++++--
4 files changed, 26 insertions(+), 14 deletions(-)
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 90c3415..233886d 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -23,7 +23,8 @@ config AD525X_DPOT
AD5204, AD5206, AD5207, AD5231, AD5232, AD5233, AD5235,
AD5260, AD5262, AD5263, AD5290, AD5291, AD5292, AD5293,
AD7376, AD8400, AD8402, AD8403, ADN2850, AD5241, AD5242,
- AD5243, AD5245, AD5246, AD5247, AD5248
+ AD5243, AD5245, AD5246, AD5247, AD5248, AD5280, AD5282,
+ ADN2860
digital potentiometer chips.
See Documentation/misc-devices/ad525x_dpot.txt for the
diff --git a/drivers/misc/ad525x_dpot-i2c.c b/drivers/misc/ad525x_dpot-i2c.c
index 0dfad4e..abba18e 100644
--- a/drivers/misc/ad525x_dpot-i2c.c
+++ b/drivers/misc/ad525x_dpot-i2c.c
@@ -94,6 +94,9 @@ static const struct i2c_device_id ad_dpot_id[] = {
{"ad5246", AD5246_ID},
{"ad5247", AD5247_ID},
{"ad5248", AD5248_ID},
+ {"ad5280", AD5280_ID},
+ {"ad5282", AD5282_ID},
+ {"adn2860", ADN2860_ID},
{}
};
MODULE_DEVICE_TABLE(i2c, ad_dpot_id);
diff --git a/drivers/misc/ad525x_dpot.c b/drivers/misc/ad525x_dpot.c
index c3595ed..3aa34c9 100644
--- a/drivers/misc/ad525x_dpot.c
+++ b/drivers/misc/ad525x_dpot.c
@@ -44,6 +44,9 @@
* AD5243 2 256 2.5, 10, 50, 100
* AD5248 2 256 2.5, 10, 50, 100
* AD5242 2 256 20, 50, 200
+ * AD5280 1 256 20, 50, 200
+ * AD5282 2 256 20, 50, 200
+ * ADN2860 3 512 25, 250
*
* See Documentation/misc-devices/ad525x_dpot.txt for more info.
*
@@ -153,6 +156,8 @@ static s32 dpot_read_i2c(struct dpot_data *dpot, u8 reg)
case DPOT_UID(AD5242_ID):
case DPOT_UID(AD5243_ID):
case DPOT_UID(AD5248_ID):
+ case DPOT_UID(AD5280_ID):
+ case DPOT_UID(AD5282_ID):
ctrl = ((reg & DPOT_RDAC_MASK) == DPOT_RDAC0) ?
0 : DPOT_AD5291_RDAC_AB;
return dpot_read_r8d8(dpot, ctrl);
@@ -249,21 +254,22 @@ static s32 dpot_write_i2c(struct dpot_data *dpot, u8 reg, u16 value)
case DPOT_UID(AD5242_ID):
case DPOT_UID(AD5243_ID):
case DPOT_UID(AD5248_ID):
- ctrl = ((reg & DPOT_RDAC_MASK) == DPOT_RDAC0) ? 0 : DPOT_AD5291_RDAC_AB;
+ case DPOT_UID(AD5280_ID):
+ case DPOT_UID(AD5282_ID):
+ ctrl = ((reg & DPOT_RDAC_MASK) == DPOT_RDAC0) ?
+ 0 : DPOT_AD5291_RDAC_AB;
return dpot_write_r8d8(dpot, ctrl, value);
break;
-
-
default:
- if (reg & DPOT_ADDR_CMD)
- return dpot_write_d8(dpot, reg);
+ if (reg & DPOT_ADDR_CMD)
+ return dpot_write_d8(dpot, reg);
- if (dpot->max_pos > 256)
- return dpot_write_r8d16(dpot, (reg & 0xF8) |
- ((reg & 0x7) << 1), value);
- else
- /* All other registers require instruction + data bytes */
- return dpot_write_r8d8(dpot, reg, value);
+ if (dpot->max_pos > 256)
+ return dpot_write_r8d16(dpot, (reg & 0xF8) |
+ ((reg & 0x7) << 1), value);
+ else
+ /* All other registers require instruction + data bytes */
+ return dpot_write_r8d8(dpot, reg, value);
}
}
diff --git a/drivers/misc/ad525x_dpot.h b/drivers/misc/ad525x_dpot.h
index 849c5d0..d789a95 100644
--- a/drivers/misc/ad525x_dpot.h
+++ b/drivers/misc/ad525x_dpot.h
@@ -112,8 +112,10 @@ enum dpot_devid {
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),
-
-
+ AD5280_ID = DPOT_CONF(F_RDACS_RW, BRDAC0, 8, 40),
+ 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),
};
#define DPOT_RDAC0 0
--
1.7.1
--
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