Commit dbd7e992 authored by Gwendal Grignou's avatar Gwendal Grignou Committed by Jonathan Cameron
Browse files

iio: acpi_als: Add timestamp channel 



Add timestamp channel in list of channel, to allow retrieving timestamps
when events are produced.

Signed-off-by: default avatarGwendal Grignou <gwendal@chromium.org>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210317074012.2336454-2-gwendal@chromium.org


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 707182b4

drivers/iio/light/acpi-als.c

+4 −6
Original line number Diff line number Diff line
@@ -45,24 +45,22 @@ static const struct iio_chan_spec acpi_als_channels[] = { 
		.info_mask_separate	= BIT(IIO_CHAN_INFO_RAW) |

					  BIT(IIO_CHAN_INFO_PROCESSED),

	},

	IIO_CHAN_SOFT_TIMESTAMP(1),

};



/*

 * The event buffer contains timestamp and all the data from

 * the ACPI0008 block. There are multiple, but so far we only

 * support _ALI (illuminance). Once someone adds new channels

 * to acpi_als_channels[], the evt_buffer below will grow

 * automatically.

 * support _ALI (illuminance): One channel, padding and timestamp.

 */

#define ACPI_ALS_EVT_NR_SOURCES		ARRAY_SIZE(acpi_als_channels)

#define ACPI_ALS_EVT_BUFFER_SIZE		\

	(sizeof(s64) + (ACPI_ALS_EVT_NR_SOURCES * sizeof(s32)))

	(sizeof(s32) + sizeof(s32) + sizeof(s64))



struct acpi_als {

	struct acpi_device	*device;

	struct mutex		lock;



	s32			evt_buffer[ACPI_ALS_EVT_BUFFER_SIZE];

	s32 evt_buffer[ACPI_ALS_EVT_BUFFER_SIZE / sizeof(s32)]  __aligned(8);

};



/*