Re: [PATCH v3 1/4] iio: potentiometer: mcp4531: Add support for MCP454x, MCP456x, MCP464x and MCP466x

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On 30/06/16 08:34, Florian Vaussard wrote:
> 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.
> 
> Acked-by: Peter Rosin <peda@xxxxxxxxxx>
> Signed-off-by: Florian Vaussard <florian.vaussard@xxxxxxxxxx>
Applied to the togreg branch of iio.git - initially pushed out as
testing for all the usual boring reasons (like reviewers aren't
perfect ;)

Jonathan
> ---
>  drivers/iio/potentiometer/Kconfig   |  6 ++--
>  drivers/iio/potentiometer/mcp4531.c | 72 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 76 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig
> index 0941c8d4..55c2414 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 3b72e1a..2251173 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);
> 

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