linux-kernel - Re: [PATCH v2] iio: adc: driver for ti adc081s/adc101s/adc121s

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Date:   Sun, 14 Jan 2018 11:08:25 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Milan Stevanovic <milan.o.stevanovic@...il.com>
Cc:     Lars-Peter Clausen <lars@...afoo.de>, linux-iio@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>, knaack.h@....de,
        pmeerw@...erw.net, Michael.Hennerich@...log.com
Subject: Re: [PATCH v2] iio: adc: driver for ti adc081s/adc101s/adc121s

On Sat, 13 Jan 2018 20:29:12 +0100
Milan Stevanovic <milan.o.stevanovic@...il.com> wrote:

>  From fab687d20ba46d78439b6cdaf0d40b78ae68222c Mon Sep 17 00:00:00 2001
> From: Milan Stevanovic <milan.o.stevanovic@...il.com>
> Date: Sun, 7 Jan 2018 21:44:33 +0100
> Subject: [PATCH v2] iio: adc: driver for ti adc081s/adc101s/adc121s
> 
>      Add Linux device driver for TI single-channel CMOS
>      8/10/12-bit analog-to-digital converter with a
>      high-speed serial interface.
> 
> Signed-off-by: Milan Stevanovic <milan.o.stevanovic@...il.com>

Patch does two things so should be two patches.  I nearly split
it myself but it should be on the list a little longer anyway so
I'll leave it to you.

Other than that, looks fine to me.  Ideally I'd like an Ack from
Michael or Lars, but it's simple enough that I'll take it without
if they are busy.

Jonathan

> 
> ---
> Changes in v2:
>       - Fix typo error
>       - Keep Copyright comment
> ---
>   drivers/iio/adc/ad7476.c | 25 +++++++++++++++++++++++--
>   1 file changed, 23 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
> index b7706bf..4fe3cf1 100644
> --- a/drivers/iio/adc/ad7476.c
> +++ b/drivers/iio/adc/ad7476.c
> @@ -1,9 +1,10 @@
> +// SPDX-License-Identifier: GPL-2.0
I have no problem with the license description change, but it should not
be in a patch doing anything else.  Put it as a separate patch in the
same series.

>   /*
> - * AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
> + * Analog Devices AD7466/7/8 AD7476/5/7/8 (A) SPI ADC driver
> + * TI ADC081S/ADC101S/ADC121S 8/10/12-bit SPI ADC driver
>    *
>    * Copyright 2010 Analog Devices Inc.
>    *
> - * Licensed under the GPL-2 or later.
>    */
>   
>   #include <linux/device.h>
> @@ -56,6 +57,9 @@ enum ad7476_supported_device_ids {
>   	ID_AD7468,
>   	ID_AD7495,
>   	ID_AD7940,
> +	ID_ADC081S,
> +	ID_ADC101S,
> +	ID_ADC121S,
>   };
>   
>   static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
> @@ -147,6 +151,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
>   	},							\
>   }
>   
> +#define ADC081S_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
> +		BIT(IIO_CHAN_INFO_RAW))
>   #define AD7476_CHAN(bits) _AD7476_CHAN((bits), 13 - (bits), \
>   		BIT(IIO_CHAN_INFO_RAW))
>   #define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
> @@ -192,6 +198,18 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
>   		.channel[0] = AD7940_CHAN(14),
>   		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
>   	},
> +	[ID_ADC081S] = {
> +		.channel[0] = ADC081S_CHAN(8),
> +		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
> +	},
> +	[ID_ADC101S] = {
> +		.channel[0] = ADC081S_CHAN(10),
> +		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
> +	},
> +	[ID_ADC121S] = {
> +		.channel[0] = ADC081S_CHAN(12),
> +		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
> +	},
>   };
>   
>   static const struct iio_info ad7476_info = {
> @@ -294,6 +312,9 @@ static const struct spi_device_id ad7476_id[] = {
>   	{"ad7910", ID_AD7467},
>   	{"ad7920", ID_AD7466},
>   	{"ad7940", ID_AD7940},
> +	{"adc081s", ID_ADC081S},
> +	{"adc101s", ID_ADC101S},
> +	{"adc121s", ID_ADC121S},
>   	{}
>   };
>   MODULE_DEVICE_TABLE(spi, ad7476_id);