linux-kernel - Re: [linux-sunxi] [PATCH 10/16] iio: adc: sun4i-gpadc-iio: add support for A83T thermal sensor

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Message-ID: <20180126174602.qolcswhqblgmlad7@core.my.home>
Date:   Fri, 26 Jan 2018 18:46:02 +0100
From:   Ondřej Jirman <x@....cz>
To:     Philipp Rossak <embed3d@...il.com>
Cc:     lee.jones@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...e-electrons.com, wens@...e.org,
        linux@...linux.org.uk, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net, davem@...emloft.net,
        hans.verkuil@...co.com, mchehab@...nel.org, rask@...melder.dk,
        clabbe.montjoie@...il.com, sean@...s.org, krzk@...nel.org,
        quentin.schulz@...e-electrons.com, icenowy@...c.io,
        edu.molinas@...il.com, singhalsimran0@...il.com,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: Re: [linux-sunxi] [PATCH 10/16] iio: adc: sun4i-gpadc-iio: add
 support for A83T thermal sensor

Hi,

On Fri, Jan 26, 2018 at 04:19:35PM +0100, Philipp Rossak wrote:
> This patch adds support for the A83T ths sensor.
> 
> The A83T does not support interrupts. This seems to be broken.

Though, you use support_irq = true below. And in my tests, IRQ for THS works on
A83T.

regards,
  o.

> The calibration data is writen at the begin of the init process.
> 
> Signed-off-by: Philipp Rossak <embed3d@...il.com>
> ---
>  drivers/iio/adc/sun4i-gpadc-iio.c | 38 ++++++++++++++++++++++++++++++++++++++
>  1 file changed, 38 insertions(+)
> 
> diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
> index f2e0ec65c53e..b8693afcdbea 100644
> --- a/drivers/iio/adc/sun4i-gpadc-iio.c
> +++ b/drivers/iio/adc/sun4i-gpadc-iio.c
> @@ -170,6 +170,40 @@ static const struct gpadc_data sun8i_h3_ths_data = {
>  		SUNXI_THS_TEMP_PERIOD(0x7),
>  };
>  
> +static const struct gpadc_data sun8i_a83t_ths_data = {
> +	.temp_offset = -2724,
> +	.temp_scale = -70,
> +	.temp_data = {SUNXI_THS_TDATA0,
> +		SUNXI_THS_TDATA1,
> +		SUNXI_THS_TDATA2,
> +		0},
> +	.sample_start = sunxi_ths_sample_start,
> +	.sample_end = sunxi_ths_sample_end,
> +	.sensor_count = 3,
> +	.supports_nvmem = false,
> +	.support_irq = true,
> +	.ctrl0_map = SUNXI_THS_ACQ0(0x1f3),
> +	.ctrl2_map = SUNXI_THS_ACQ1(0x1f3),
> +	.sensor_en_map = SUNXI_THS_TEMP_SENSE_EN0 |
> +		SUNXI_THS_TEMP_SENSE_EN1 |
> +		SUNXI_THS_TEMP_SENSE_EN2,
> +	.filter_map = SUNXI_THS_FILTER_EN |
> +		SUNXI_THS_FILTER_TYPE(0x2),
> +	.irq_clear_map = SUNXI_THS_INTS_ALARM_INT_0 |
> +		SUNXI_THS_INTS_ALARM_INT_1 |
> +		SUNXI_THS_INTS_ALARM_INT_2 |
> +		SUNXI_THS_INTS_SHUT_INT_0  |
> +		SUNXI_THS_INTS_SHUT_INT_1  |
> +		SUNXI_THS_INTS_SHUT_INT_2  |
> +		SUNXI_THS_INTS_TDATA_IRQ_0 |
> +		SUNXI_THS_INTS_TDATA_IRQ_1 |
> +		SUNXI_THS_INTS_TDATA_IRQ_2,
> +	.irq_control_map = SUNXI_THS_INTC_TDATA_IRQ_EN0 |
> +		SUNXI_THS_INTC_TDATA_IRQ_EN1 |
> +		SUNXI_THS_INTC_TDATA_IRQ_EN2 |
> +		SUNXI_THS_TEMP_PERIOD(0x257),
> +};
> +
>  struct sun4i_gpadc_iio {
>  	struct iio_dev			*indio_dev;
>  	struct completion		completion;
> @@ -672,6 +706,10 @@ static const struct of_device_id sun4i_gpadc_of_id[] = {
>  		.compatible = "allwinner,sun8i-h3-ths",
>  		.data = &sun8i_h3_ths_data,
>  	},
> +	{
> +		.compatible = "allwinner,sun8i-a83t-ths",
> +		.data = &sun8i_a83t_ths_data,
> +	},
>  	{ /* sentinel */ }
>  };
>  
> -- 
> 2.11.0
> 
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