diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/iio/backend.h | 1 | ||||
| -rw-r--r-- | include/linux/iio/buffer.h | 14 | ||||
| -rw-r--r-- | include/linux/iio/iio.h | 39 | ||||
| -rw-r--r-- | include/linux/platform_data/apds990x.h | 65 |
4 files changed, 46 insertions, 73 deletions
diff --git a/include/linux/iio/backend.h b/include/linux/iio/backend.h index 4d15c2a9802c..3f95ed1fdf9e 100644 --- a/include/linux/iio/backend.h +++ b/include/linux/iio/backend.h @@ -261,6 +261,7 @@ int iio_backend_extend_chan_spec(struct iio_backend *back, bool iio_backend_has_caps(struct iio_backend *back, u32 caps); void *iio_backend_get_priv(const struct iio_backend *conv); struct iio_backend *devm_iio_backend_get(struct device *dev, const char *name); +struct iio_backend *devm_iio_backend_get_by_index(struct device *dev, unsigned int index); struct iio_backend *devm_iio_backend_fwnode_get(struct device *dev, const char *name, struct fwnode_handle *fwnode); diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index d37f82678f71..745c98ef4e04 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -34,8 +34,16 @@ static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev, void *data, int64_t timestamp) { if (ACCESS_PRIVATE(indio_dev, scan_timestamp)) { - size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1; - ((int64_t *)data)[ts_offset] = timestamp; + size_t ts_offset = ACCESS_PRIVATE(indio_dev, scan_timestamp_offset); + + /* + * The size of indio_dev->scan_bytes is always aligned to the + * largest scan element's alignment (see iio_compute_scan_bytes()). + * So there may be padding after the timestamp. ts_offset contains + * the offset in bytes that was already computed for correctly + * aligning the timestamp. + */ + *(int64_t *)(data + ts_offset) = timestamp; } return iio_push_to_buffers(indio_dev, data); @@ -71,7 +79,7 @@ static inline int iio_push_to_buffers_with_ts(struct iio_dev *indio_dev, int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev, const void *data, size_t data_sz, - int64_t timestamp); + s64 timestamp); bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, const unsigned long *mask); diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 2c91b7659ce9..711c00f67371 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -177,8 +177,31 @@ struct iio_event_spec { }; /** + * define IIO_SCAN_FORMAT_SIGNED_INT - signed integer data format + * + * &iio_scan_type.format value for signed integers (two's complement). + */ +#define IIO_SCAN_FORMAT_SIGNED_INT 's' + +/** + * define IIO_SCAN_FORMAT_UNSIGNED_INT - unsigned integer data format + * + * &iio_scan_type.format value for unsigned integers. + */ +#define IIO_SCAN_FORMAT_UNSIGNED_INT 'u' + +/** + * define IIO_SCAN_FORMAT_FLOAT - floating-point data format + * + * &iio_scan_type.format value for IEEE 754 floating-point numbers. + */ +#define IIO_SCAN_FORMAT_FLOAT 'f' + +/** * struct iio_scan_type - specification for channel data format in buffer - * @sign: 's' or 'u' to specify signed or unsigned + * @sign: Deprecated, use @format instead. + * @format: Data format, can have any of the IIO_SCAN_FORMAT_* + * values. * @realbits: Number of valid bits of data * @storagebits: Realbits + padding * @shift: Shift right by this before masking out realbits. @@ -189,7 +212,10 @@ struct iio_event_spec { * @endianness: little or big endian */ struct iio_scan_type { - char sign; + union { + char sign; + char format; + }; u8 realbits; u8 storagebits; u8 shift; @@ -327,15 +353,15 @@ static inline bool iio_channel_has_available(const struct iio_chan_spec *chan, (chan->info_mask_shared_by_all_available & BIT(type)); } -#define IIO_CHAN_SOFT_TIMESTAMP(_si) { \ +#define IIO_CHAN_SOFT_TIMESTAMP(_si) (struct iio_chan_spec) { \ .type = IIO_TIMESTAMP, \ .channel = -1, \ .scan_index = _si, \ .scan_type = { \ .sign = 's', \ - .realbits = 64, \ + .realbits = 64, \ .storagebits = 64, \ - }, \ + }, \ } s64 iio_get_time_ns(const struct iio_dev *indio_dev); @@ -584,6 +610,8 @@ struct iio_buffer_setup_ops { * and owner * @buffer: [DRIVER] any buffer present * @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux + * @scan_timestamp_offset: [INTERN] cache of the offset (in bytes) for the + * timestamp in the scan buffer * @available_scan_masks: [DRIVER] optional array of allowed bitmasks. Sort the * array in order of preference, the most preferred * masks first. @@ -610,6 +638,7 @@ struct iio_dev { struct iio_buffer *buffer; int scan_bytes; + unsigned int __private scan_timestamp_offset; const unsigned long *available_scan_masks; unsigned int __private masklength; diff --git a/include/linux/platform_data/apds990x.h b/include/linux/platform_data/apds990x.h deleted file mode 100644 index 37684f68c04f..000000000000 --- a/include/linux/platform_data/apds990x.h +++ /dev/null @@ -1,65 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * This file is part of the APDS990x sensor driver. - * Chip is combined proximity and ambient light sensor. - * - * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). - * - * Contact: Samu Onkalo <samu.p.onkalo@nokia.com> - */ - -#ifndef __APDS990X_H__ -#define __APDS990X_H__ - - -#define APDS_IRLED_CURR_12mA 0x3 -#define APDS_IRLED_CURR_25mA 0x2 -#define APDS_IRLED_CURR_50mA 0x1 -#define APDS_IRLED_CURR_100mA 0x0 - -/** - * struct apds990x_chip_factors - defines effect of the cover window - * @ga: Total glass attenuation - * @cf1: clear channel factor 1 for raw to lux conversion - * @irf1: IR channel factor 1 for raw to lux conversion - * @cf2: clear channel factor 2 for raw to lux conversion - * @irf2: IR channel factor 2 for raw to lux conversion - * @df: device factor for conversion formulas - * - * Structure for tuning ALS calculation to match with environment. - * Values depend on the material above the sensor and the sensor - * itself. If the GA is zero, driver will use uncovered sensor default values - * format: decimal value * APDS_PARAM_SCALE except df which is plain integer. - */ -struct apds990x_chip_factors { - int ga; - int cf1; - int irf1; - int cf2; - int irf2; - int df; -}; -#define APDS_PARAM_SCALE 4096 - -/** - * struct apds990x_platform_data - platform data for apsd990x.c driver - * @cf: chip factor data - * @pdrive: IR-led driving current - * @ppcount: number of IR pulses used for proximity estimation - * @setup_resources: interrupt line setup call back function - * @release_resources: interrupt line release call back function - * - * Proximity detection result depends heavily on correct ppcount, pdrive - * and cover window. - * - */ - -struct apds990x_platform_data { - struct apds990x_chip_factors cf; - u8 pdrive; - u8 ppcount; - int (*setup_resources)(void); - int (*release_resources)(void); -}; - -#endif |