linux-kernel - Re: [PATCH AUTOSEL 4.19 066/167] iio: adc: exynos-adc: Add S5PV210 variant

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Date:   Tue, 3 Sep 2019 18:53:28 +0100
From:   Jonathan Cameron <jic23@...23.retrosnub.co.uk>
To:     Sasha Levin <sashal@...nel.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Jonathan Bakker <xc-racer2@...e.ca>,
        Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        linux-iio@...r.kernel.org
Subject: Re: [PATCH AUTOSEL 4.19 066/167] iio: adc: exynos-adc: Add S5PV210
 variant

On Tue,  3 Sep 2019 12:23:38 -0400
Sasha Levin <sashal@...nel.org> wrote:

> From: Jonathan Bakker <xc-racer2@...e.ca>
> 
> [ Upstream commit 882bf52fdeab47dbe991cc0e564b0b51c571d0a3 ]
> 
> S5PV210's ADC variant is almost the same as v1 except that it has 10
> channels and doesn't require the pmu register
> 
> Signed-off-by: Jonathan Bakker <xc-racer2@...e.ca>
> Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

I have no particular objection to adding new IDs (which is more
or less what this patch is), but I didn't know autosel was
picking them up.  So a bit of surprise... If intentional
then fine to apply to stable.

> ---
>  drivers/iio/adc/exynos_adc.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
> index 4be29ed447559..41da522fc6735 100644
> --- a/drivers/iio/adc/exynos_adc.c
> +++ b/drivers/iio/adc/exynos_adc.c
> @@ -115,6 +115,7 @@
>  #define MAX_ADC_V2_CHANNELS		10
>  #define MAX_ADC_V1_CHANNELS		8
>  #define MAX_EXYNOS3250_ADC_CHANNELS	2
> +#define MAX_S5PV210_ADC_CHANNELS	10
>  
>  /* Bit definitions common for ADC_V1 and ADC_V2 */
>  #define ADC_CON_EN_START	(1u << 0)
> @@ -282,6 +283,16 @@ static const struct exynos_adc_data exynos_adc_v1_data = {
>  	.start_conv	= exynos_adc_v1_start_conv,
>  };
>  
> +static const struct exynos_adc_data exynos_adc_s5pv210_data = {
> +	.num_channels	= MAX_S5PV210_ADC_CHANNELS,
> +	.mask		= ADC_DATX_MASK,	/* 12 bit ADC resolution */
> +
> +	.init_hw	= exynos_adc_v1_init_hw,
> +	.exit_hw	= exynos_adc_v1_exit_hw,
> +	.clear_irq	= exynos_adc_v1_clear_irq,
> +	.start_conv	= exynos_adc_v1_start_conv,
> +};
> +
>  static void exynos_adc_s3c2416_start_conv(struct exynos_adc *info,
>  					  unsigned long addr)
>  {
> @@ -478,6 +489,9 @@ static const struct of_device_id exynos_adc_match[] = {
>  	}, {
>  		.compatible = "samsung,s3c6410-adc",
>  		.data = &exynos_adc_s3c64xx_data,
> +	}, {
> +		.compatible = "samsung,s5pv210-adc",
> +		.data = &exynos_adc_s5pv210_data,
>  	}, {
>  		.compatible = "samsung,exynos-adc-v1",
>  		.data = &exynos_adc_v1_data,