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From: Philipp Rossak <embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Jonathan Cameron <jic23-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
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	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org,
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	linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
Subject: Re: [PATCH 08/16] iio: adc: sun4i-gpadc-iio: rework: add interrupt support
Date: Sun, 28 Jan 2018 14:48:58 +0100	[thread overview]
Message-ID: <f312a295-04b4-acef-f36f-20b9c38fb6b3@gmail.com> (raw)
In-Reply-To: <20180128090630.35064e5c@archlinux>



On 28.01.2018 10:06, Jonathan Cameron wrote:
> On Fri, 26 Jan 2018 16:19:33 +0100
> Philipp Rossak <embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> 
>> This patch rewors the driver to support interrupts for the thermal part
>> of the sensor.
>>
>> This is only available for the newer sensor (currently H3 and A83T).
>> The interrupt will be trigerd on data available and triggers the update
>> for the thermal sensors. All newer sensors have different amount of
>> sensors and different interrupts for each device the reset of the
>> interrupts need to be done different
>>
>> For the newer sensors is the autosuspend disabled.
>>
>> Signed-off-by: Philipp Rossak <embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Really minor point inline, otherwise this looks fine to me.
> 
> Acked-by: Jonathan  Cameron <jonathan.cameron-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
>> ---
>>   drivers/iio/adc/sun4i-gpadc-iio.c | 68 +++++++++++++++++++++++++++++++++++----
>>   include/linux/mfd/sun4i-gpadc.h   | 33 +++++++++++++++++++
>>   2 files changed, 95 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
>> index 7b12666cdd9e..77e07f042730 100644
>> --- a/drivers/iio/adc/sun4i-gpadc-iio.c
>> +++ b/drivers/iio/adc/sun4i-gpadc-iio.c
>> @@ -78,11 +78,14 @@ struct gpadc_data {
>>   	u32		ctrl2_map;
>>   	u32		sensor_en_map;
>>   	u32		filter_map;
>> +	u32		irq_clear_map;
>> +	u32		irq_control_map;
>>   	bool		has_bus_clk;
>>   	bool		has_bus_rst;
>>   	bool		has_mod_clk;
>>   	int		sensor_count;
>>   	bool		supports_nvmem;
>> +	bool		support_irq;
>>   };
>>   
>>   static const struct gpadc_data sun4i_gpadc_data = {
>> @@ -97,6 +100,7 @@ static const struct gpadc_data sun4i_gpadc_data = {
>>   	.sample_end = sun4i_gpadc_sample_end,
>>   	.sensor_count = 1,
>>   	.supports_nvmem = false,
>> +	.support_irq = false,
>>   };
>>   
>>   static const struct gpadc_data sun5i_gpadc_data = {
>> @@ -111,6 +115,7 @@ static const struct gpadc_data sun5i_gpadc_data = {
>>   	.sample_end = sun4i_gpadc_sample_end,
>>   	.sensor_count = 1,
>>   	.supports_nvmem = false,
>> +	.support_irq = false,
>>   };
>>   
>>   static const struct gpadc_data sun6i_gpadc_data = {
>> @@ -125,6 +130,7 @@ static const struct gpadc_data sun6i_gpadc_data = {
>>   	.sample_end = sun4i_gpadc_sample_end,
>>   	.sensor_count = 1,
>>   	.supports_nvmem = false,
>> +	.support_irq = false,
>>   };
>>   
>>   static const struct gpadc_data sun8i_a33_gpadc_data = {
>> @@ -136,6 +142,7 @@ static const struct gpadc_data sun8i_a33_gpadc_data = {
>>   	.sample_end = sun4i_gpadc_sample_end,
>>   	.sensor_count = 1,
>>   	.supports_nvmem = false,
>> +	.support_irq = false,
>>   };
>>   
>>   struct sun4i_gpadc_iio {
>> @@ -339,6 +346,11 @@ static int sun4i_gpadc_temp_read(struct iio_dev *indio_dev, int *val,
>>   		return 0;
>>   	}
>>   
>> +	if (info->data->support_irq) {
>> +		regmap_read(info->regmap, info->data->temp_data[sensor], val);
>> +		return 0;
>> +	}
>> +
>>   	return sun4i_gpadc_read(indio_dev, 0, val, info->temp_data_irq);
>>   }
>>   
>> @@ -436,6 +448,17 @@ static irqreturn_t sun4i_gpadc_fifo_data_irq_handler(int irq, void *dev_id)
>>   	return IRQ_HANDLED;
>>   }
>>   
>> +static irqreturn_t sunxi_irq_thread(int irq, void *data)
>> +{
>> +	struct sun4i_gpadc_iio *info = data;
>> +
>> +	regmap_write(info->regmap, SUNXI_THS_STAT, info->data->irq_clear_map);
>> +
>> +	thermal_zone_device_update(info->tzd, THERMAL_EVENT_TEMP_SAMPLE);
>> +
>> +	return IRQ_HANDLED;
>> +}
>> +
>>   static int sun4i_gpadc_sample_end(struct sun4i_gpadc_iio *info)
>>   {
>>   	/* Disable the ADC on IP */
>> @@ -448,6 +471,8 @@ static int sun4i_gpadc_sample_end(struct sun4i_gpadc_iio *info)
>>   
>>   static int sunxi_ths_sample_end(struct sun4i_gpadc_iio *info)
>>   {
>> +	/* Disable ths interrupt*/
> 
> Space before */
> 
^^ Ok, I will rework that.

>> +	regmap_write(info->regmap, SUNXI_THS_INTC, 0x0);
>>   	/* Disable temperature sensor */
>>   	regmap_write(info->regmap, SUNXI_THS_CTRL2, 0x0);
>>   
>> @@ -509,9 +534,15 @@ static int sunxi_ths_sample_start(struct sun4i_gpadc_iio *info)
>>   	regmap_write(info->regmap, SUNXI_THS_CTRL2,
>>   		info->data->ctrl2_map);
>>   
>> +	regmap_write(info->regmap, SUNXI_THS_STAT,
>> +			info->data->irq_clear_map);
>> +
>>   	regmap_write(info->regmap, SUNXI_THS_FILTER,
>>   		info->data->filter_map);
>>   
>> +	regmap_write(info->regmap, SUNXI_THS_INTC,
>> +		info->data->irq_control_map);
>> +
>>   	regmap_read(info->regmap, SUNXI_THS_CTRL2, &value);
>>   
>>   	regmap_write(info->regmap, SUNXI_THS_CTRL2,
>> @@ -625,12 +656,29 @@ static int sun4i_gpadc_probe_dt(struct platform_device *pdev,
>>   	struct nvmem_cell *cell;
>>   	ssize_t cell_size;
>>   	u64 *cell_data;
>> +	int irq;
>>   
>>   	info->data = of_device_get_match_data(&pdev->dev);
>>   	if (!info->data)
>>   		return -ENODEV;
>>   
>> -	info->no_irq = true;
>> +	if (info->data->support_irq) {
>> +		/* only the new versions of ths support right now irqs */
>> +		irq = platform_get_irq(pdev, 0);
>> +		if (irq < 0) {
>> +			dev_err(&pdev->dev, "failed to get IRQ: %d\n", irq);
>> +			return irq;
>> +		}
>> +
>> +		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
>> +				sunxi_irq_thread, IRQF_ONESHOT,
>> +				dev_name(&pdev->dev), info);
>> +		if (ret)
>> +			return ret;
>> +
>> +	} else
>> +		info->no_irq = true;
>> +
>>   	indio_dev->num_channels = ARRAY_SIZE(sun8i_a33_gpadc_channels);
>>   	indio_dev->channels = sun8i_a33_gpadc_channels;
>>   
>> @@ -840,11 +888,13 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
>>   	if (ret)
>>   		return ret;
>>   
>> -	pm_runtime_set_autosuspend_delay(&pdev->dev,
>> -					 SUN4I_GPADC_AUTOSUSPEND_DELAY);
>> -	pm_runtime_use_autosuspend(&pdev->dev);
>> -	pm_runtime_set_suspended(&pdev->dev);
>> -	pm_runtime_enable(&pdev->dev);
>> +	if (!info->data->support_irq) {
>> +		pm_runtime_set_autosuspend_delay(&pdev->dev,
>> +						 SUN4I_GPADC_AUTOSUSPEND_DELAY);
>> +		pm_runtime_use_autosuspend(&pdev->dev);
>> +		pm_runtime_set_suspended(&pdev->dev);
>> +		pm_runtime_enable(&pdev->dev);
>> +	}
>>   
>>   	if (IS_ENABLED(CONFIG_THERMAL_OF)) {
>>   		for (i = 0; i < info->data->sensor_count; i++) {
>> @@ -865,6 +915,9 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
>>   		}
>>   	}
>>   
>> +	if (info->data->support_irq)
>> +		info->data->sample_start(info);
>> +
>>   	ret = devm_iio_device_register(&pdev->dev, indio_dev);
>>   	if (ret < 0) {
>>   		dev_err(&pdev->dev, "could not register the device\n");
>> @@ -894,6 +947,9 @@ static int sun4i_gpadc_remove(struct platform_device *pdev)
>>   	if (!IS_ENABLED(CONFIG_THERMAL_OF))
>>   		return 0;
>>   
>> +	if (info->data->support_irq)
>> +		info->data->sample_end(info);
>> +
>>   	thermal_zone_of_sensor_unregister(info->sensor_device, info->tzd);
>>   
>>   	if (!info->no_irq)
>> diff --git a/include/linux/mfd/sun4i-gpadc.h b/include/linux/mfd/sun4i-gpadc.h
>> index c251002431bd..ab34a96a7ff3 100644
>> --- a/include/linux/mfd/sun4i-gpadc.h
>> +++ b/include/linux/mfd/sun4i-gpadc.h
>> @@ -89,6 +89,8 @@
>>   /* SUNXI_THS COMMON REGISTERS + DEFINES */
>>   #define SUNXI_THS_CTRL0					0x00
>>   #define SUNXI_THS_CTRL2					0x40
>> +#define SUNXI_THS_INTC					0x44
>> +#define SUNXI_THS_STAT					0x48
>>   #define SUNXI_THS_FILTER				0x70
>>   #define SUNXI_THS_CDATA_0_1				0x74
>>   #define SUNXI_THS_CDATA_2_3				0x78
>> @@ -107,6 +109,37 @@
>>   #define SUNXI_THS_TEMP_SENSE_EN2			BIT(2)
>>   #define SUNXI_THS_TEMP_SENSE_EN3			BIT(3)
>>   
>> +#define SUNXI_THS_TEMP_PERIOD(x)			(GENMASK(31, 12) & ((x) << 12))
>> +
>> +#define SUNXI_THS_INTS_ALARM_OFF_2			BIT(14)
>> +#define SUNXI_THS_INTS_ALARM_OFF_1			BIT(13)
>> +#define SUNXI_THS_INTS_ALARM_OFF_0			BIT(12)
>> +#define SUNXI_THS_INTS_TDATA_IRQ_3			BIT(11)
>> +#define SUNXI_THS_INTS_TDATA_IRQ_2			BIT(10)
>> +#define SUNXI_THS_INTS_TDATA_IRQ_1			BIT(9)
>> +#define SUNXI_THS_INTS_TDATA_IRQ_0			BIT(8)
>> +#define SUNXI_THS_INTS_SHUT_INT_3			BIT(7)
>> +#define SUNXI_THS_INTS_SHUT_INT_2			BIT(6)
>> +#define SUNXI_THS_INTS_SHUT_INT_1			BIT(5)
>> +#define SUNXI_THS_INTS_SHUT_INT_0			BIT(4)
>> +#define SUNXI_THS_INTS_ALARM_INT_3			BIT(3)
>> +#define SUNXI_THS_INTS_ALARM_INT_2			BIT(2)
>> +#define SUNXI_THS_INTS_ALARM_INT_1			BIT(1)
>> +#define SUNXI_THS_INTS_ALARM_INT_0			BIT(0)
>> +
>> +#define SUNXI_THS_INTC_TDATA_IRQ_EN3			BIT(11)
>> +#define SUNXI_THS_INTC_TDATA_IRQ_EN2			BIT(10)
>> +#define SUNXI_THS_INTC_TDATA_IRQ_EN1			BIT(9)
>> +#define SUNXI_THS_INTC_TDATA_IRQ_EN0			BIT(8)
>> +#define SUNXI_THS_INTC_SHUT_INT_EN3			BIT(7)
>> +#define SUNXI_THS_INTC_SHUT_INT_EN2			BIT(6)
>> +#define SUNXI_THS_INTC_SHUT_INT_EN1			BIT(5)
>> +#define SUNXI_THS_INTC_SHUT_INT_EN0			BIT(4)
>> +#define SUNXI_THS_INTC_ALARM_INT_EN3			BIT(3)
>> +#define SUNXI_THS_INTC_ALARM_INT_EN2			BIT(2)
>> +#define SUNXI_THS_INTC_ALARM_INT_EN1			BIT(1)
>> +#define SUNXI_THS_INTC_ALARM_INT_EN0			BIT(0)
>> +
>>   #define MAX_SENSOR_COUNT				4
>>   
>>   struct sun4i_gpadc_dev {
> 

Thanks,
Philipp

  reply	other threads:[~2018-01-28 13:48 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-26 15:19 [PATCH 00/16] IIO-based thermal sensor driver for Allwinner H3 and A83T SoC Philipp Rossak
     [not found] ` <20180126151941.12183-1-embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-26 15:19   ` [PATCH 01/16] dt-bindings: update the Allwinner GPADC device tree binding for H3 & A83T Philipp Rossak
2018-01-26 15:19   ` [PATCH 02/16] arm: config: sunxi_defconfig: enable SUN4I_GPADC Philipp Rossak
2018-01-26 15:19   ` [PATCH 03/16] iio: adc: sun4i-gpadc-iio: rename A33-specified registers to contain A33 Philipp Rossak
     [not found]     ` <20180126151941.12183-4-embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-28  8:34       ` Jonathan Cameron
2018-01-26 15:19   ` [PATCH 04/16] iio: adc: sun4i-gpadc-iio: rework: sampling start/end code readout reg Philipp Rossak
2018-01-28  8:43     ` Jonathan Cameron
2018-01-28 13:34       ` Philipp Rossak
2018-01-28 13:37         ` Icenowy Zheng
     [not found]           ` <2CC367BA-766A-4384-82EE-9A38BBFB08C2-h8G6r0blFSE@public.gmane.org>
2018-01-28 14:32             ` Philipp Rossak
2018-01-26 15:19   ` [PATCH 05/16] iio: adc: sun4i-gpadc-iio: rework: support clocks and reset Philipp Rossak
2018-01-28  8:50     ` Jonathan Cameron
2018-01-28 11:34       ` Philipp Rossak
2018-01-26 15:19   ` [PATCH 06/16] iio: adc: sun4i-gpadc-iio: rework: support multible sensors Philipp Rossak
2018-01-28  9:08     ` Jonathan Cameron
2018-01-28 14:10       ` Philipp Rossak
2018-01-26 15:19   ` [PATCH 07/16] iio: adc: sun4i-gpadc-iio: rework: support nvmem calibration data Philipp Rossak
2018-01-28  9:02     ` Jonathan Cameron
2018-01-28 13:46       ` Philipp Rossak
     [not found]         ` <6ebbb5e0-eb5f-afe4-50e8-eb3cee8ec7fa-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-28 13:52           ` Icenowy Zheng
     [not found]             ` <1927F24D-D3ED-49CF-9B7C-A7C8C873F0CF-h8G6r0blFSE@public.gmane.org>
2018-01-28 14:39               ` Philipp Rossak
2018-01-26 15:19   ` [PATCH 08/16] iio: adc: sun4i-gpadc-iio: rework: add interrupt support Philipp Rossak
     [not found]     ` <20180126151941.12183-9-embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-28  9:06       ` Jonathan Cameron
2018-01-28 13:48         ` Philipp Rossak [this message]
2018-01-26 15:19   ` [PATCH 09/16] iio: adc: sun4i-gpadc-iio: add support for H3 thermal sensor Philipp Rossak
2018-01-26 15:19   ` [PATCH 10/16] iio: adc: sun4i-gpadc-iio: add support for A83T " Philipp Rossak
     [not found]     ` <20180126151941.12183-11-embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-26 17:46       ` [linux-sunxi] " Ondřej Jirman
     [not found]         ` <20180126174602.qolcswhqblgmlad7-9v8tmBix7cb9zxVx7UNMDg@public.gmane.org>
2018-01-27  4:30           ` Philipp Rossak
2018-01-26 15:19   ` [PATCH 11/16] arm: dts: sunxi-h3-h5: add support for the thermal sensor in H3 and H5 Philipp Rossak
2018-01-26 15:19   ` [PATCH 12/16] arm: dts: sun8i: h3: add support for the thermal sensor in H3 Philipp Rossak
2018-01-26 15:19   ` [PATCH 13/16] arm: dts: sun8i: h3: add thermal zone to H3 Philipp Rossak
     [not found]     ` <20180126151941.12183-14-embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-26 16:26       ` Samuel Holland
     [not found]         ` <4cfb1faf-a712-c882-1ef1-55845c1bb00e-RkNLwX/CsU9g9hUCZPvPmw@public.gmane.org>
2018-01-26 17:48           ` [linux-sunxi] " Philipp Rossak
2018-01-26 15:19   ` [PATCH 14/16] arm: dts: sun8i: h3: enable H3 sid controller Philipp Rossak
2018-01-26 15:19   ` [PATCH 15/16] arm: dts: sun8i: a83t: add support for the thermal sensor in A83T Philipp Rossak
2018-01-26 15:19   ` [PATCH 16/16] arm: dts: sun8i: a83t: add thermal zone to A83T Philipp Rossak
     [not found]     ` <20180126151941.12183-17-embed3d-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-26 16:25       ` Samuel Holland
2018-01-26 17:35         ` [linux-sunxi] " Philipp Rossak

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