linux-kernel - Re: [PATCH v3 5/7] iio:dac:ad5686: Add AD5672R/76/76R/84R/86R support

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Message-ID: <20180415192348.16165da9@archlinux>
Date:   Sun, 15 Apr 2018 19:23:48 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Stefan Popa <stefan.popa@...log.com>
Cc:     <Michael.Hennerich@...log.com>, <lars@...afoo.de>,
        <knaack.h@....de>, <pmeerw@...erw.net>,
        <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 5/7] iio:dac:ad5686: Add AD5672R/76/76R/84R/86R
 support

On Wed, 11 Apr 2018 14:53:01 +0300
Stefan Popa <stefan.popa@...log.com> wrote:

> The AD5684R/AD5686R are a family of 4 channel DACs with 12-bit, 14-bit and
> 16-bit precision respectively. The devices come either with a built-in
> reference or no built-in reference.
> 
> The AD5672R/AD5676/AD5676R are similar, except that they have 8 channels
> instead of 4.
> 
> Datasheets:
> http://www.analog.com/media/en/technical-documentation/data-sheets/AD5672R_5676R.pdf
> http://www.analog.com/media/en/technical-documentation/data-sheets/AD5686R_5685R_5684R.pdf
> 
> Signed-off-by: Stefan Popa <stefan.popa@...log.com>
Applied.  My tweak to the previous patch made this fiddly, so please
check I didn't mess it up.

Thanks,

Jonathan

> ---
> Changes in v2:
> 	- Refactored the patch to add support for new parts
> Changes in v3:
> 	- Nothing changed, just to follow the patch set version
> 
>  drivers/iio/dac/ad5686.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
> index a753ffd..54f67d5 100644
> --- a/drivers/iio/dac/ad5686.c
> +++ b/drivers/iio/dac/ad5686.c
> @@ -87,9 +87,14 @@ struct ad5686_state {
>   */
>  
>  enum ad5686_supported_device_ids {
> +	ID_AD5672R,
> +	ID_AD5676,
> +	ID_AD5676R,
>  	ID_AD5684,
> +	ID_AD5684R,
>  	ID_AD5685R,
>  	ID_AD5686,
> +	ID_AD5686R
>  };
>  static int ad5686_spi_write(struct ad5686_state *st,
>  			     u8 cmd, u8 addr, u16 val, u8 shift)
> @@ -293,15 +298,47 @@ static struct iio_chan_spec name[] = {				\
>  		AD5868_CHANNEL(3, 8, bits, _shift),		\
>  }
>  
> +#define DECLARE_AD5676_CHANNELS(name, bits, _shift)		\
> +static struct iio_chan_spec name[] = {				\
> +		AD5868_CHANNEL(0, 0, bits, _shift),		\
> +		AD5868_CHANNEL(1, 1, bits, _shift),		\
> +		AD5868_CHANNEL(2, 2, bits, _shift),		\
> +		AD5868_CHANNEL(3, 3, bits, _shift),		\
> +		AD5868_CHANNEL(4, 4, bits, _shift),		\
> +		AD5868_CHANNEL(5, 5, bits, _shift),		\
> +		AD5868_CHANNEL(6, 6, bits, _shift),		\
> +		AD5868_CHANNEL(7, 7, bits, _shift),		\
> +}
> +
> +DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4);
> +DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0);
>  DECLARE_AD5686_CHANNELS(ad5684_channels, 12, 4);
>  DECLARE_AD5686_CHANNELS(ad5685r_channels, 14, 2);
>  DECLARE_AD5686_CHANNELS(ad5686_channels, 16, 0);
>  
>  static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
> +	[ID_AD5672R] = {
> +		.channels = ad5672_channels,
> +		.int_vref_mv = 2500,
> +		.num_channels = 8,
> +	},
> +	[ID_AD5676] = {
> +		.channels = ad5676_channels,
> +		.num_channels = 8,
> +	},
> +	[ID_AD5676R] = {
> +		.channels = ad5676_channels,
> +		.int_vref_mv = 2500,
> +		.num_channels = 8,
> +	},
>  	[ID_AD5684] = {
>  		.channels = ad5684_channels,
>  		.num_channels = 4,
> +	},
> +	[ID_AD5684R] = {
> +		.channels = ad5684_channels,
>  		.int_vref_mv = 2500,
> +		.num_channels = 4,
>  	},
>  	[ID_AD5685R] = {
>  		.channels = ad5685r_channels,
> @@ -311,7 +348,11 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
>  	[ID_AD5686] = {
>  		.channels = ad5686_channels,
>  		.num_channels = 4,
> +	},
> +	[ID_AD5686R] = {
> +		.channels = ad5686_channels,
>  		.int_vref_mv = 2500,
> +		.num_channels = 4,
>  	},
>  };
>  
> @@ -391,9 +432,14 @@ static int ad5686_remove(struct spi_device *spi)
>  }
>  
>  static const struct spi_device_id ad5686_id[] = {
> +	{"ad5672r", ID_AD5672R},
> +	{"ad5676", ID_AD5676},
> +	{"ad5676r", ID_AD5676R},
>  	{"ad5684", ID_AD5684},
> +	{"ad5684r", ID_AD5684R},
>  	{"ad5685r", ID_AD5685R},
>  	{"ad5686", ID_AD5686},
> +	{"ad5686r", ID_AD5686R},
>  	{}
>  };
>  MODULE_DEVICE_TABLE(spi, ad5686_id);