forked from Minki/linux
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>
This commit is contained in:
Florian Vaussard
Jonathan Cameron
parent
468c5620d0
commit
294ea6f3a1
@ -49,8 +49,10 @@ config MCP4531
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depends on I2C
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help
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Say yes here to build support for the Microchip
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MCP4531, MCP4532, MCP4551, MCP4552,
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MCP4631, MCP4632, MCP4651, MCP4652
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MCP4531, MCP4532, MCP4541, MCP4542,
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MCP4551, MCP4552, MCP4561, MCP4562,
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MCP4631, MCP4632, MCP4641, MCP4642,
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MCP4651, MCP4652, MCP4661, MCP4662
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digital potentiomenter chips.
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To compile this driver as a module, choose M here: the
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@ -8,12 +8,20 @@
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* DEVID #Wipers #Positions Resistor Opts (kOhm) i2c address
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* mcp4531 1 129 5, 10, 50, 100 010111x
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* mcp4532 1 129 5, 10, 50, 100 01011xx
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* mcp4541 1 129 5, 10, 50, 100 010111x
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* mcp4542 1 129 5, 10, 50, 100 01011xx
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* mcp4551 1 257 5, 10, 50, 100 010111x
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* mcp4552 1 257 5, 10, 50, 100 01011xx
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* mcp4561 1 257 5, 10, 50, 100 010111x
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* mcp4562 1 257 5, 10, 50, 100 01011xx
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* mcp4631 2 129 5, 10, 50, 100 0101xxx
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* mcp4632 2 129 5, 10, 50, 100 01011xx
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* mcp4641 2 129 5, 10, 50, 100 0101xxx
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* mcp4642 2 129 5, 10, 50, 100 01011xx
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* mcp4651 2 257 5, 10, 50, 100 0101xxx
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* mcp4652 2 257 5, 10, 50, 100 01011xx
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* mcp4661 2 257 5, 10, 50, 100 0101xxx
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* mcp4662 2 257 5, 10, 50, 100 01011xx
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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@ -37,18 +45,34 @@ enum mcp4531_type {
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MCP453x_103,
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MCP453x_503,
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MCP453x_104,
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MCP454x_502,
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MCP454x_103,
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MCP454x_503,
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MCP454x_104,
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MCP455x_502,
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MCP455x_103,
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MCP455x_503,
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MCP455x_104,
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MCP456x_502,
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MCP456x_103,
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MCP456x_503,
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MCP456x_104,
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MCP463x_502,
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MCP463x_103,
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MCP463x_503,
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MCP463x_104,
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MCP464x_502,
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MCP464x_103,
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MCP464x_503,
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MCP464x_104,
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MCP465x_502,
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MCP465x_103,
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MCP465x_503,
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MCP465x_104,
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MCP466x_502,
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MCP466x_103,
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MCP466x_503,
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MCP466x_104,
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};
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static const struct mcp4531_cfg mcp4531_cfg[] = {
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@ -56,18 +80,34 @@ static const struct mcp4531_cfg mcp4531_cfg[] = {
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[MCP453x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, },
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[MCP453x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, },
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[MCP453x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, },
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[MCP454x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, },
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[MCP454x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, },
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[MCP454x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, },
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[MCP454x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, },
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[MCP455x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, },
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[MCP455x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, },
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[MCP455x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, },
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[MCP455x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, },
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[MCP456x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, },
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[MCP456x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, },
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[MCP456x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, },
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[MCP456x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, },
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[MCP463x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, },
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[MCP463x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, },
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[MCP463x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, },
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[MCP463x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, },
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[MCP464x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, },
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[MCP464x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, },
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[MCP464x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, },
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[MCP464x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, },
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[MCP465x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, },
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[MCP465x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, },
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[MCP465x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, },
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[MCP465x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, },
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[MCP466x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, },
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[MCP466x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, },
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[MCP466x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, },
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[MCP466x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, },
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};
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#define MCP4531_WRITE (0 << 2)
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@ -187,6 +227,14 @@ static const struct i2c_device_id mcp4531_id[] = {
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{ "mcp4532-103", MCP453x_103 },
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{ "mcp4532-503", MCP453x_503 },
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{ "mcp4532-104", MCP453x_104 },
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{ "mcp4541-502", MCP454x_502 },
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{ "mcp4541-103", MCP454x_103 },
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{ "mcp4541-503", MCP454x_503 },
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{ "mcp4541-104", MCP454x_104 },
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{ "mcp4542-502", MCP454x_502 },
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{ "mcp4542-103", MCP454x_103 },
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{ "mcp4542-503", MCP454x_503 },
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{ "mcp4542-104", MCP454x_104 },
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{ "mcp4551-502", MCP455x_502 },
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{ "mcp4551-103", MCP455x_103 },
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{ "mcp4551-503", MCP455x_503 },
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@ -195,6 +243,14 @@ static const struct i2c_device_id mcp4531_id[] = {
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{ "mcp4552-103", MCP455x_103 },
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{ "mcp4552-503", MCP455x_503 },
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{ "mcp4552-104", MCP455x_104 },
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{ "mcp4561-502", MCP456x_502 },
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{ "mcp4561-103", MCP456x_103 },
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{ "mcp4561-503", MCP456x_503 },
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{ "mcp4561-104", MCP456x_104 },
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{ "mcp4562-502", MCP456x_502 },
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{ "mcp4562-103", MCP456x_103 },
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{ "mcp4562-503", MCP456x_503 },
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{ "mcp4562-104", MCP456x_104 },
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{ "mcp4631-502", MCP463x_502 },
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{ "mcp4631-103", MCP463x_103 },
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{ "mcp4631-503", MCP463x_503 },
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@ -203,6 +259,14 @@ static const struct i2c_device_id mcp4531_id[] = {
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{ "mcp4632-103", MCP463x_103 },
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{ "mcp4632-503", MCP463x_503 },
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{ "mcp4632-104", MCP463x_104 },
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{ "mcp4641-502", MCP464x_502 },
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{ "mcp4641-103", MCP464x_103 },
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{ "mcp4641-503", MCP464x_503 },
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{ "mcp4641-104", MCP464x_104 },
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{ "mcp4642-502", MCP464x_502 },
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{ "mcp4642-103", MCP464x_103 },
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{ "mcp4642-503", MCP464x_503 },
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{ "mcp4642-104", MCP464x_104 },
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{ "mcp4651-502", MCP465x_502 },
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{ "mcp4651-103", MCP465x_103 },
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{ "mcp4651-503", MCP465x_503 },
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@ -211,6 +275,14 @@ static const struct i2c_device_id mcp4531_id[] = {
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{ "mcp4652-103", MCP465x_103 },
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{ "mcp4652-503", MCP465x_503 },
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{ "mcp4652-104", MCP465x_104 },
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{ "mcp4661-502", MCP466x_502 },
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{ "mcp4661-103", MCP466x_103 },
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{ "mcp4661-503", MCP466x_503 },
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{ "mcp4661-104", MCP466x_104 },
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{ "mcp4662-502", MCP466x_502 },
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{ "mcp4662-103", MCP466x_103 },
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{ "mcp4662-503", MCP466x_503 },
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{ "mcp4662-104", MCP466x_104 },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, mcp4531_id);
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