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authorFlorian Vaussard <florian.vaussard@gmail.com>2016-06-30 09:34:48 +0200
committerJonathan Cameron <jic23@kernel.org>2016-07-03 12:39:58 +0100
commit294ea6f3a162fc0091e80170b8176bf326962d1c (patch)
tree6cb773a6f68401e830908faf0a10dc20432f15a3
parent468c5620d094e9ead2a0b6802d3c490b4fb6ed03 (diff)
iio: potentiometer: mcp4531: Add support for MCP454x, MCP456x, MCP464x and MCP466x
This patch adds support for MCP454x, MCP456x, MCP464x and MCP466x parts. The main difference with currently supported parts (MCP453x and alike) is the addition of a non-volatile memory in order to recall the wiper setting at power-on. This feature is currently not supported and only the volatile memory is used to set the wiper. Signed-off-by: Florian Vaussard <florian.vaussard@heig-vd.ch> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
-rw-r--r--drivers/iio/potentiometer/Kconfig6
-rw-r--r--drivers/iio/potentiometer/mcp4531.c72
2 files changed, 76 insertions, 2 deletions
diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig
index 0941c8d490a0..55c24148db17 100644
--- a/drivers/iio/potentiometer/Kconfig
+++ b/drivers/iio/potentiometer/Kconfig
@@ -49,8 +49,10 @@ config MCP4531
depends on I2C
help
Say yes here to build support for the Microchip
- MCP4531, MCP4532, MCP4551, MCP4552,
- MCP4631, MCP4632, MCP4651, MCP4652
+ MCP4531, MCP4532, MCP4541, MCP4542,
+ MCP4551, MCP4552, MCP4561, MCP4562,
+ MCP4631, MCP4632, MCP4641, MCP4642,
+ MCP4651, MCP4652, MCP4661, MCP4662
digital potentiomenter chips.
To compile this driver as a module, choose M here: the
diff --git a/drivers/iio/potentiometer/mcp4531.c b/drivers/iio/potentiometer/mcp4531.c
index 3b72e1a595db..2251173153c1 100644
--- a/drivers/iio/potentiometer/mcp4531.c
+++ b/drivers/iio/potentiometer/mcp4531.c
@@ -8,12 +8,20 @@
* DEVID #Wipers #Positions Resistor Opts (kOhm) i2c address
* mcp4531 1 129 5, 10, 50, 100 010111x
* mcp4532 1 129 5, 10, 50, 100 01011xx
+ * mcp4541 1 129 5, 10, 50, 100 010111x
+ * mcp4542 1 129 5, 10, 50, 100 01011xx
* mcp4551 1 257 5, 10, 50, 100 010111x
* mcp4552 1 257 5, 10, 50, 100 01011xx
+ * mcp4561 1 257 5, 10, 50, 100 010111x
+ * mcp4562 1 257 5, 10, 50, 100 01011xx
* mcp4631 2 129 5, 10, 50, 100 0101xxx
* mcp4632 2 129 5, 10, 50, 100 01011xx
+ * mcp4641 2 129 5, 10, 50, 100 0101xxx
+ * mcp4642 2 129 5, 10, 50, 100 01011xx
* mcp4651 2 257 5, 10, 50, 100 0101xxx
* mcp4652 2 257 5, 10, 50, 100 01011xx
+ * mcp4661 2 257 5, 10, 50, 100 0101xxx
+ * mcp4662 2 257 5, 10, 50, 100 01011xx
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
@@ -37,18 +45,34 @@ enum mcp4531_type {
MCP453x_103,
MCP453x_503,
MCP453x_104,
+ MCP454x_502,
+ MCP454x_103,
+ MCP454x_503,
+ MCP454x_104,
MCP455x_502,
MCP455x_103,
MCP455x_503,
MCP455x_104,
+ MCP456x_502,
+ MCP456x_103,
+ MCP456x_503,
+ MCP456x_104,
MCP463x_502,
MCP463x_103,
MCP463x_503,
MCP463x_104,
+ MCP464x_502,
+ MCP464x_103,
+ MCP464x_503,
+ MCP464x_104,
MCP465x_502,
MCP465x_103,
MCP465x_503,
MCP465x_104,
+ MCP466x_502,
+ MCP466x_103,
+ MCP466x_503,
+ MCP466x_104,
};
static const struct mcp4531_cfg mcp4531_cfg[] = {
@@ -56,18 +80,34 @@ static const struct mcp4531_cfg mcp4531_cfg[] = {
[MCP453x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, },
[MCP453x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, },
[MCP453x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, },
+ [MCP454x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, },
+ [MCP454x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, },
+ [MCP454x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, },
+ [MCP454x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, },
[MCP455x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, },
[MCP455x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, },
[MCP455x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, },
[MCP455x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, },
+ [MCP456x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, },
+ [MCP456x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, },
+ [MCP456x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, },
+ [MCP456x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, },
[MCP463x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, },
[MCP463x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, },
[MCP463x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, },
[MCP463x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, },
+ [MCP464x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, },
+ [MCP464x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, },
+ [MCP464x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, },
+ [MCP464x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, },
[MCP465x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, },
[MCP465x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, },
[MCP465x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, },
[MCP465x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, },
+ [MCP466x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, },
+ [MCP466x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, },
+ [MCP466x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, },
+ [MCP466x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, },
};
#define MCP4531_WRITE (0 << 2)
@@ -187,6 +227,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4532-103", MCP453x_103 },
{ "mcp4532-503", MCP453x_503 },
{ "mcp4532-104", MCP453x_104 },
+ { "mcp4541-502", MCP454x_502 },
+ { "mcp4541-103", MCP454x_103 },
+ { "mcp4541-503", MCP454x_503 },
+ { "mcp4541-104", MCP454x_104 },
+ { "mcp4542-502", MCP454x_502 },
+ { "mcp4542-103", MCP454x_103 },
+ { "mcp4542-503", MCP454x_503 },
+ { "mcp4542-104", MCP454x_104 },
{ "mcp4551-502", MCP455x_502 },
{ "mcp4551-103", MCP455x_103 },
{ "mcp4551-503", MCP455x_503 },
@@ -195,6 +243,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4552-103", MCP455x_103 },
{ "mcp4552-503", MCP455x_503 },
{ "mcp4552-104", MCP455x_104 },
+ { "mcp4561-502", MCP456x_502 },
+ { "mcp4561-103", MCP456x_103 },
+ { "mcp4561-503", MCP456x_503 },
+ { "mcp4561-104", MCP456x_104 },
+ { "mcp4562-502", MCP456x_502 },
+ { "mcp4562-103", MCP456x_103 },
+ { "mcp4562-503", MCP456x_503 },
+ { "mcp4562-104", MCP456x_104 },
{ "mcp4631-502", MCP463x_502 },
{ "mcp4631-103", MCP463x_103 },
{ "mcp4631-503", MCP463x_503 },
@@ -203,6 +259,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4632-103", MCP463x_103 },
{ "mcp4632-503", MCP463x_503 },
{ "mcp4632-104", MCP463x_104 },
+ { "mcp4641-502", MCP464x_502 },
+ { "mcp4641-103", MCP464x_103 },
+ { "mcp4641-503", MCP464x_503 },
+ { "mcp4641-104", MCP464x_104 },
+ { "mcp4642-502", MCP464x_502 },
+ { "mcp4642-103", MCP464x_103 },
+ { "mcp4642-503", MCP464x_503 },
+ { "mcp4642-104", MCP464x_104 },
{ "mcp4651-502", MCP465x_502 },
{ "mcp4651-103", MCP465x_103 },
{ "mcp4651-503", MCP465x_503 },
@@ -211,6 +275,14 @@ static const struct i2c_device_id mcp4531_id[] = {
{ "mcp4652-103", MCP465x_103 },
{ "mcp4652-503", MCP465x_503 },
{ "mcp4652-104", MCP465x_104 },
+ { "mcp4661-502", MCP466x_502 },
+ { "mcp4661-103", MCP466x_103 },
+ { "mcp4661-503", MCP466x_503 },
+ { "mcp4661-104", MCP466x_104 },
+ { "mcp4662-502", MCP466x_502 },
+ { "mcp4662-103", MCP466x_103 },
+ { "mcp4662-503", MCP466x_503 },
+ { "mcp4662-104", MCP466x_104 },
{}
};
MODULE_DEVICE_TABLE(i2c, mcp4531_id);