linux-kernel - Re: [PATCH v4] iio: adc: ad7476: Add support for TI ADS786X ADCs

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Date:   Sat, 9 Feb 2019 15:56:50 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Ricardo Ribalda Delgado <ricardo@...alda.com>
Cc:     linux-iio@...r.kernel.org,
        Alexandru Ardelean <ardeleanalex@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] iio: adc: ad7476: Add support for TI ADS786X ADCs

On Mon,  4 Feb 2019 13:44:41 +0100
Ricardo Ribalda Delgado <ricardo@...alda.com> wrote:

> Add support for Texas Instruments ADS7866, ADS7867 and ADS7868
> 8/10/12 bit Single channel ADC.
> 
> Datasheet: http://www.ti.com/lit/ds/symlink/ads7868.pdf
> 
> Signed-off-by: Ricardo Ribalda Delgado <ricardo@...alda.com>
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> ---
> v4: Changes by Alexandru Ardelean <ardeleanalex@...il.com>
> 
> Break Kconfig into a table
> 
>  drivers/iio/adc/Kconfig  | 11 +++++++----
>  drivers/iio/adc/ad7476.c | 20 ++++++++++++++++++++
>  2 files changed, 27 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
> index f9354e5ee65c..3d82727fa977 100644
> --- a/drivers/iio/adc/Kconfig
> +++ b/drivers/iio/adc/Kconfig
> @@ -57,14 +57,17 @@ config AD7298
>  	  module will be called ad7298.
>  
>  config AD7476
> -	tristate "Analog Devices AD7476 and similar 1-channel ADCs driver"
> +	tristate "Analog Devices AD7476 1-channel ADCs driver and other similar devices from AD an TI"
>  	depends on SPI
>  	select IIO_BUFFER
>  	select IIO_TRIGGERED_BUFFER
>  	help
> -	  Say yes here to build support for Analog Devices AD7273, AD7274, AD7276,
> -	  AD7277, AD7278, AD7475, AD7476, AD7477, AD7478, AD7466, AD7467, AD7468,
> -	  AD7495, AD7910, AD7920, AD7920 SPI analog to digital converters (ADC).
> +	  Say yes here to build support for the following SPI analog to
> +	  digital converters (ADCs):
> +	  Analog Devices: AD7273, AD7274, AD7276, AD7277, AD7278, AD7475,
> +	  AD7476, AD7477, AD7478, AD7466, AD7467, AD7468, AD7495, AD7910,
> +	  AD7920.
> +	  Texas Instruments: ADS7866, ADS7867, ADS7868.
>  
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called ad7476.
> diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
> index 0549686b9ef8..76747488044b 100644
> --- a/drivers/iio/adc/ad7476.c
> +++ b/drivers/iio/adc/ad7476.c
> @@ -59,6 +59,9 @@ enum ad7476_supported_device_ids {
>  	ID_ADC081S,
>  	ID_ADC101S,
>  	ID_ADC121S,
> +	ID_ADS7866,
> +	ID_ADS7867,
> +	ID_ADS7868,
>  };
>  
>  static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
> @@ -157,6 +160,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
>  #define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
>  		BIT(IIO_CHAN_INFO_RAW))
>  #define AD7091R_CHAN(bits) _AD7476_CHAN((bits), 16 - (bits), 0)
> +#define ADS786X_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
> +		BIT(IIO_CHAN_INFO_RAW))
>  
>  static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
>  	[ID_AD7091R] = {
> @@ -209,6 +214,18 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
>  		.channel[0] = ADC081S_CHAN(12),
>  		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
>  	},
> +	[ID_ADS7866] = {
> +		.channel[0] = ADS786X_CHAN(12),
> +		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
> +	},
> +	[ID_ADS7867] = {
> +		.channel[0] = ADS786X_CHAN(10),
> +		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
> +	},
> +	[ID_ADS7868] = {
> +		.channel[0] = ADS786X_CHAN(8),
> +		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
> +	},
>  };
>  
>  static const struct iio_info ad7476_info = {
> @@ -314,6 +331,9 @@ static const struct spi_device_id ad7476_id[] = {
>  	{"adc081s", ID_ADC081S},
>  	{"adc101s", ID_ADC101S},
>  	{"adc121s", ID_ADC121S},
> +	{"ads7866", ID_ADS7866},
> +	{"ads7867", ID_ADS7867},
> +	{"ads7868", ID_ADS7868},
>  	{}
>  };
>  MODULE_DEVICE_TABLE(spi, ad7476_id);