diff options
Diffstat (limited to 'include/linux/iio')
| -rw-r--r-- | include/linux/iio/adc/ad_sigma_delta.h | 6 | ||||
| -rw-r--r-- | include/linux/iio/buffer.h | 101 | ||||
| -rw-r--r-- | include/linux/iio/common/st_sensors.h | 300 | ||||
| -rw-r--r-- | include/linux/iio/common/st_sensors_i2c.h | 20 | ||||
| -rw-r--r-- | include/linux/iio/common/st_sensors_spi.h | 20 | ||||
| -rw-r--r-- | include/linux/iio/consumer.h | 73 | ||||
| -rw-r--r-- | include/linux/iio/driver.h | 9 | ||||
| -rw-r--r-- | include/linux/iio/events.h | 18 | ||||
| -rw-r--r-- | include/linux/iio/frequency/adf4350.h | 4 | ||||
| -rw-r--r-- | include/linux/iio/gyro/itg3200.h | 154 | ||||
| -rw-r--r-- | include/linux/iio/iio.h | 264 | ||||
| -rw-r--r-- | include/linux/iio/imu/adis.h | 280 | ||||
| -rw-r--r-- | include/linux/iio/machine.h | 2 | ||||
| -rw-r--r-- | include/linux/iio/sysfs.h | 20 | ||||
| -rw-r--r-- | include/linux/iio/trigger.h | 34 | ||||
| -rw-r--r-- | include/linux/iio/types.h | 27 |
16 files changed, 1141 insertions, 191 deletions
diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h index 2e4eab9868a..e7fdec4db9d 100644 --- a/include/linux/iio/adc/ad_sigma_delta.h +++ b/include/linux/iio/adc/ad_sigma_delta.h @@ -133,9 +133,9 @@ int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig); .channel2 = (_channel2), \ .address = (_address), \ .extend_name = (_extend_name), \ - .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \ - IIO_CHAN_INFO_SCALE_SHARED_BIT | \ - IIO_CHAN_INFO_OFFSET_SEPARATE_BIT, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_OFFSET), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ .scan_index = (_si), \ .scan_type = { \ .sign = 'u', \ diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index c629b3a1d9a..51939276339 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -11,6 +11,7 @@ #define _IIO_BUFFER_GENERIC_H_ #include <linux/sysfs.h> #include <linux/iio/iio.h> +#include <linux/kref.h> #ifdef CONFIG_IIO_BUFFER @@ -20,12 +21,16 @@ struct iio_buffer; * struct iio_buffer_access_funcs - access functions for buffers. * @store_to: actually store stuff to the buffer * @read_first_n: try to get a specified number of bytes (must exist) + * @data_available: indicates whether data for reading from the buffer is + * available. * @request_update: if a parameter change has been marked, update underlying * storage. * @get_bytes_per_datum:get current bytes per datum * @set_bytes_per_datum:set number of bytes per datum * @get_length: get number of datums in buffer * @set_length: set number of datums in buffer + * @release: called when the last reference to the buffer is dropped, + * should free all resources allocated by the buffer. * * The purpose of this structure is to make the buffer element * modular as event for a given driver, different usecases may require @@ -36,10 +41,11 @@ struct iio_buffer; * any of them not existing. **/ struct iio_buffer_access_funcs { - int (*store_to)(struct iio_buffer *buffer, u8 *data); + int (*store_to)(struct iio_buffer *buffer, const void *data); int (*read_first_n)(struct iio_buffer *buffer, size_t n, char __user *buf); + bool (*data_available)(struct iio_buffer *buffer); int (*request_update)(struct iio_buffer *buffer); @@ -47,6 +53,8 @@ struct iio_buffer_access_funcs { int (*set_bytes_per_datum)(struct iio_buffer *buffer, size_t bpd); int (*get_length)(struct iio_buffer *buffer); int (*set_length)(struct iio_buffer *buffer, int length); + + void (*release)(struct iio_buffer *buffer); }; /** @@ -66,7 +74,9 @@ struct iio_buffer_access_funcs { * @stufftoread: [INTERN] flag to indicate new data. * @demux_list: [INTERN] list of operations required to demux the scan. * @demux_bounce: [INTERN] buffer for doing gather from incoming scan. - **/ + * @buffer_list: [INTERN] entry in the devices list of current buffers. + * @ref: [INTERN] reference count of the buffer. + */ struct iio_buffer { int length; int bytes_per_datum; @@ -80,28 +90,29 @@ struct iio_buffer { bool stufftoread; const struct attribute_group *attrs; struct list_head demux_list; - unsigned char *demux_bounce; + void *demux_bounce; + struct list_head buffer_list; + struct kref ref; }; /** + * iio_update_buffers() - add or remove buffer from active list + * @indio_dev: device to add buffer to + * @insert_buffer: buffer to insert + * @remove_buffer: buffer_to_remove + * + * Note this will tear down the all buffering and build it up again + */ +int iio_update_buffers(struct iio_dev *indio_dev, + struct iio_buffer *insert_buffer, + struct iio_buffer *remove_buffer); + +/** * iio_buffer_init() - Initialize the buffer structure * @buffer: buffer to be initialized **/ void iio_buffer_init(struct iio_buffer *buffer); -/** - * __iio_update_buffer() - update common elements of buffers - * @buffer: buffer that is the event source - * @bytes_per_datum: size of individual datum including timestamp - * @length: number of datums in buffer - **/ -static inline void __iio_update_buffer(struct iio_buffer *buffer, - int bytes_per_datum, int length) -{ - buffer->bytes_per_datum = bytes_per_datum; - buffer->length = length; -} - int iio_scan_mask_query(struct iio_dev *indio_dev, struct iio_buffer *buffer, int bit); @@ -115,11 +126,36 @@ int iio_scan_mask_set(struct iio_dev *indio_dev, struct iio_buffer *buffer, int bit); /** - * iio_push_to_buffer() - push to a registered buffer. - * @buffer: IIO buffer structure for device - * @data: the data to push to the buffer + * iio_push_to_buffers() - push to a registered buffer. + * @indio_dev: iio_dev structure for device. + * @data: Full scan. + */ +int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data); + +/* + * iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers + * @indio_dev: iio_dev structure for device. + * @data: sample data + * @timestamp: timestamp for the sample data + * + * Pushes data to the IIO device's buffers. If timestamps are enabled for the + * device the function will store the supplied timestamp as the last element in + * the sample data buffer before pushing it to the device buffers. The sample + * data buffer needs to be large enough to hold the additional timestamp + * (usually the buffer should be indio->scan_bytes bytes large). + * + * Returns 0 on success, a negative error code otherwise. */ -int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data); +static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev, + void *data, int64_t timestamp) +{ + if (indio_dev->scan_timestamp) { + size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1; + ((int64_t *)data)[ts_offset] = timestamp; + } + + return iio_push_to_buffers(indio_dev, data); +} int iio_update_demux(struct iio_dev *indio_dev); @@ -173,15 +209,31 @@ ssize_t iio_buffer_show_enable(struct device *dev, iio_buffer_show_enable, \ iio_buffer_store_enable) -int iio_sw_buffer_preenable(struct iio_dev *indio_dev); - bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, const unsigned long *mask); +struct iio_buffer *iio_buffer_get(struct iio_buffer *buffer); +void iio_buffer_put(struct iio_buffer *buffer); + +/** + * iio_device_attach_buffer - Attach a buffer to a IIO device + * @indio_dev: The device the buffer should be attached to + * @buffer: The buffer to attach to the device + * + * This function attaches a buffer to a IIO device. The buffer stays attached to + * the device until the device is freed. The function should only be called at + * most once per device. + */ +static inline void iio_device_attach_buffer(struct iio_dev *indio_dev, + struct iio_buffer *buffer) +{ + indio_dev->buffer = iio_buffer_get(buffer); +} + #else /* CONFIG_IIO_BUFFER */ static inline int iio_buffer_register(struct iio_dev *indio_dev, - struct iio_chan_spec *channels, + const struct iio_chan_spec *channels, int num_channels) { return 0; @@ -190,6 +242,9 @@ static inline int iio_buffer_register(struct iio_dev *indio_dev, static inline void iio_buffer_unregister(struct iio_dev *indio_dev) {} +static inline void iio_buffer_get(struct iio_buffer *buffer) {} +static inline void iio_buffer_put(struct iio_buffer *buffer) {} + #endif /* CONFIG_IIO_BUFFER */ #endif /* _IIO_BUFFER_GENERIC_H_ */ diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h new file mode 100644 index 00000000000..96f51f0e009 --- /dev/null +++ b/include/linux/iio/common/st_sensors.h @@ -0,0 +1,300 @@ +/* + * STMicroelectronics sensors library driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca <denis.ciocca@st.com> + * + * Licensed under the GPL-2. + */ + +#ifndef ST_SENSORS_H +#define ST_SENSORS_H + +#include <linux/i2c.h> +#include <linux/spi/spi.h> +#include <linux/irqreturn.h> +#include <linux/iio/trigger.h> +#include <linux/bitops.h> +#include <linux/regulator/consumer.h> + +#include <linux/platform_data/st_sensors_pdata.h> + +#define ST_SENSORS_TX_MAX_LENGTH 2 +#define ST_SENSORS_RX_MAX_LENGTH 6 + +#define ST_SENSORS_ODR_LIST_MAX 10 +#define ST_SENSORS_FULLSCALE_AVL_MAX 10 + +#define ST_SENSORS_NUMBER_ALL_CHANNELS 4 +#define ST_SENSORS_ENABLE_ALL_AXIS 0x07 +#define ST_SENSORS_SCAN_X 0 +#define ST_SENSORS_SCAN_Y 1 +#define ST_SENSORS_SCAN_Z 2 +#define ST_SENSORS_DEFAULT_POWER_ON_VALUE 0x01 +#define ST_SENSORS_DEFAULT_POWER_OFF_VALUE 0x00 +#define ST_SENSORS_DEFAULT_WAI_ADDRESS 0x0f +#define ST_SENSORS_DEFAULT_AXIS_ADDR 0x20 +#define ST_SENSORS_DEFAULT_AXIS_MASK 0x07 +#define ST_SENSORS_DEFAULT_AXIS_N_BIT 3 + +#define ST_SENSORS_MAX_NAME 17 +#define ST_SENSORS_MAX_4WAI 7 + +#define ST_SENSORS_LSM_CHANNELS(device_type, mask, index, mod, \ + ch2, s, endian, rbits, sbits, addr) \ +{ \ + .type = device_type, \ + .modified = mod, \ + .info_mask_separate = mask, \ + .scan_index = index, \ + .channel2 = ch2, \ + .address = addr, \ + .scan_type = { \ + .sign = s, \ + .realbits = rbits, \ + .shift = sbits - rbits, \ + .storagebits = sbits, \ + .endianness = endian, \ + }, \ +} + +#define ST_SENSOR_DEV_ATTR_SAMP_FREQ() \ + IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO, \ + st_sensors_sysfs_get_sampling_frequency, \ + st_sensors_sysfs_set_sampling_frequency) + +#define ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL() \ + IIO_DEV_ATTR_SAMP_FREQ_AVAIL( \ + st_sensors_sysfs_sampling_frequency_avail) + +#define ST_SENSORS_DEV_ATTR_SCALE_AVAIL(name) \ + IIO_DEVICE_ATTR(name, S_IRUGO, \ + st_sensors_sysfs_scale_avail, NULL , 0); + +struct st_sensor_odr_avl { + unsigned int hz; + u8 value; +}; + +struct st_sensor_odr { + u8 addr; + u8 mask; + struct st_sensor_odr_avl odr_avl[ST_SENSORS_ODR_LIST_MAX]; +}; + +struct st_sensor_power { + u8 addr; + u8 mask; + u8 value_off; + u8 value_on; +}; + +struct st_sensor_axis { + u8 addr; + u8 mask; +}; + +struct st_sensor_fullscale_avl { + unsigned int num; + u8 value; + unsigned int gain; + unsigned int gain2; +}; + +struct st_sensor_fullscale { + u8 addr; + u8 mask; + struct st_sensor_fullscale_avl fs_avl[ST_SENSORS_FULLSCALE_AVL_MAX]; +}; + +/** + * struct st_sensor_bdu - ST sensor device block data update + * @addr: address of the register. + * @mask: mask to write the block data update flag. + */ +struct st_sensor_bdu { + u8 addr; + u8 mask; +}; + +/** + * struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt + * @addr: address of the register. + * @mask_int1: mask to enable/disable IRQ on INT1 pin. + * @mask_int2: mask to enable/disable IRQ on INT2 pin. + * struct ig1 - represents the Interrupt Generator 1 of sensors. + * @en_addr: address of the enable ig1 register. + * @en_mask: mask to write the on/off value for enable. + */ +struct st_sensor_data_ready_irq { + u8 addr; + u8 mask_int1; + u8 mask_int2; + struct { + u8 en_addr; + u8 en_mask; + } ig1; +}; + +/** + * struct st_sensor_transfer_buffer - ST sensor device I/O buffer + * @buf_lock: Mutex to protect rx and tx buffers. + * @tx_buf: Buffer used by SPI transfer function to send data to the sensors. + * This buffer is used to avoid DMA not-aligned issue. + * @rx_buf: Buffer used by SPI transfer to receive data from sensors. + * This buffer is used to avoid DMA not-aligned issue. + */ +struct st_sensor_transfer_buffer { + struct mutex buf_lock; + u8 rx_buf[ST_SENSORS_RX_MAX_LENGTH]; + u8 tx_buf[ST_SENSORS_TX_MAX_LENGTH] ____cacheline_aligned; +}; + +/** + * struct st_sensor_transfer_function - ST sensor device I/O function + * @read_byte: Function used to read one byte. + * @write_byte: Function used to write one byte. + * @read_multiple_byte: Function used to read multiple byte. + */ +struct st_sensor_transfer_function { + int (*read_byte) (struct st_sensor_transfer_buffer *tb, + struct device *dev, u8 reg_addr, u8 *res_byte); + int (*write_byte) (struct st_sensor_transfer_buffer *tb, + struct device *dev, u8 reg_addr, u8 data); + int (*read_multiple_byte) (struct st_sensor_transfer_buffer *tb, + struct device *dev, u8 reg_addr, int len, u8 *data, + bool multiread_bit); +}; + +/** + * struct st_sensors - ST sensors list + * @wai: Contents of WhoAmI register. + * @sensors_supported: List of supported sensors by struct itself. + * @ch: IIO channels for the sensor. + * @odr: Output data rate register and ODR list available. + * @pw: Power register of the sensor. + * @enable_axis: Enable one or more axis of the sensor. + * @fs: Full scale register and full scale list available. + * @bdu: Block data update register. + * @drdy_irq: Data ready register of the sensor. + * @multi_read_bit: Use or not particular bit for [I2C/SPI] multi-read. + * @bootime: samples to discard when sensor passing from power-down to power-up. + */ +struct st_sensors { + u8 wai; + char sensors_supported[ST_SENSORS_MAX_4WAI][ST_SENSORS_MAX_NAME]; + struct iio_chan_spec *ch; + int num_ch; + struct st_sensor_odr odr; + struct st_sensor_power pw; + struct st_sensor_axis enable_axis; + struct st_sensor_fullscale fs; + struct st_sensor_bdu bdu; + struct st_sensor_data_ready_irq drdy_irq; + bool multi_read_bit; + unsigned int bootime; +}; + +/** + * struct st_sensor_data - ST sensor device status + * @dev: Pointer to instance of struct device (I2C or SPI). + * @trig: The trigger in use by the core driver. + * @sensor: Pointer to the current sensor struct in use. + * @current_fullscale: Maximum range of measure by the sensor. + * @vdd: Pointer to sensor's Vdd power supply + * @vdd_io: Pointer to sensor's Vdd-IO power supply + * @enabled: Status of the sensor (false->off, true->on). + * @multiread_bit: Use or not particular bit for [I2C/SPI] multiread. + * @buffer_data: Data used by buffer part. + * @odr: Output data rate of the sensor [Hz]. + * num_data_channels: Number of data channels used in buffer. + * @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2). + * @get_irq_data_ready: Function to get the IRQ used for data ready signal. + * @tf: Transfer function structure used by I/O operations. + * @tb: Transfer buffers and mutex used by I/O operations. + */ +struct st_sensor_data { + struct device *dev; + struct iio_trigger *trig; + struct st_sensors *sensor; + struct st_sensor_fullscale_avl *current_fullscale; + struct regulator *vdd; + struct regulator *vdd_io; + + bool enabled; + bool multiread_bit; + + char *buffer_data; + + unsigned int odr; + unsigned int num_data_channels; + + u8 drdy_int_pin; + + unsigned int (*get_irq_data_ready) (struct iio_dev *indio_dev); + + const struct st_sensor_transfer_function *tf; + struct st_sensor_transfer_buffer tb; +}; + +#ifdef CONFIG_IIO_BUFFER +irqreturn_t st_sensors_trigger_handler(int irq, void *p); + +int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf); +#endif + +#ifdef CONFIG_IIO_TRIGGER +int st_sensors_allocate_trigger(struct iio_dev *indio_dev, + const struct iio_trigger_ops *trigger_ops); + +void st_sensors_deallocate_trigger(struct iio_dev *indio_dev); + +#else +static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev, + const struct iio_trigger_ops *trigger_ops) +{ + return 0; +} +static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev) +{ + return; +} +#endif + +int st_sensors_init_sensor(struct iio_dev *indio_dev, + struct st_sensors_platform_data *pdata); + +int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable); + +int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable); + +void st_sensors_power_enable(struct iio_dev *indio_dev); + +void st_sensors_power_disable(struct iio_dev *indio_dev); + +int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr); + +int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable); + +int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale); + +int st_sensors_read_info_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *ch, int *val); + +int st_sensors_check_device_support(struct iio_dev *indio_dev, + int num_sensors_list, const struct st_sensors *sensors); + +ssize_t st_sensors_sysfs_get_sampling_frequency(struct device *dev, + struct device_attribute *attr, char *buf); + +ssize_t st_sensors_sysfs_set_sampling_frequency(struct device *dev, + struct device_attribute *attr, const char *buf, size_t size); + +ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev, + struct device_attribute *attr, char *buf); + +ssize_t st_sensors_sysfs_scale_avail(struct device *dev, + struct device_attribute *attr, char *buf); + +#endif /* ST_SENSORS_H */ diff --git a/include/linux/iio/common/st_sensors_i2c.h b/include/linux/iio/common/st_sensors_i2c.h new file mode 100644 index 00000000000..67d845385ae --- /dev/null +++ b/include/linux/iio/common/st_sensors_i2c.h @@ -0,0 +1,20 @@ +/* + * STMicroelectronics sensors i2c library driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca <denis.ciocca@st.com> + * + * Licensed under the GPL-2. + */ + +#ifndef ST_SENSORS_I2C_H +#define ST_SENSORS_I2C_H + +#include <linux/i2c.h> +#include <linux/iio/common/st_sensors.h> + +void st_sensors_i2c_configure(struct iio_dev *indio_dev, + struct i2c_client *client, struct st_sensor_data *sdata); + +#endif /* ST_SENSORS_I2C_H */ diff --git a/include/linux/iio/common/st_sensors_spi.h b/include/linux/iio/common/st_sensors_spi.h new file mode 100644 index 00000000000..d964a3563dc --- /dev/null +++ b/include/linux/iio/common/st_sensors_spi.h @@ -0,0 +1,20 @@ +/* + * STMicroelectronics sensors spi library driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca <denis.ciocca@st.com> + * + * Licensed under the GPL-2. + */ + +#ifndef ST_SENSORS_SPI_H +#define ST_SENSORS_SPI_H + +#include <linux/spi/spi.h> +#include <linux/iio/common/st_sensors.h> + +void st_sensors_spi_configure(struct iio_dev *indio_dev, + struct spi_device *spi, struct st_sensor_data *sdata); + +#endif /* ST_SENSORS_SPI_H */ diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index e875bcf0478..651f9a0e276 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -9,31 +9,37 @@ */ #ifndef _IIO_INKERN_CONSUMER_H_ #define _IIO_INKERN_CONSUMER_H_ + +#include <linux/types.h> #include <linux/iio/types.h> struct iio_dev; struct iio_chan_spec; +struct device; /** * struct iio_channel - everything needed for a consumer to use a channel * @indio_dev: Device on which the channel exists. * @channel: Full description of the channel. + * @data: Data about the channel used by consumer. */ struct iio_channel { struct iio_dev *indio_dev; const struct iio_chan_spec *channel; + void *data; }; /** * iio_channel_get() - get description of all that is needed to access channel. - * @name: Unique name of the device as provided in the iio_map + * @dev: Pointer to consumer device. Device name must match + * the name of the device as provided in the iio_map * with which the desired provider to consumer mapping * was registered. * @consumer_channel: Unique name to identify the channel on the consumer * side. This typically describes the channels use within * the consumer. E.g. 'battery_voltage' */ -struct iio_channel *iio_channel_get(const char *name, +struct iio_channel *iio_channel_get(struct device *dev, const char *consumer_channel); /** @@ -44,14 +50,14 @@ void iio_channel_release(struct iio_channel *chan); /** * iio_channel_get_all() - get all channels associated with a client - * @name: name of consumer device. + * @dev: Pointer to consumer device. * * Returns an array of iio_channel structures terminated with one with * null iio_dev pointer. * This function is used by fairly generic consumers to get all the * channels registered as having this consumer. */ -struct iio_channel *iio_channel_get_all(const char *name); +struct iio_channel *iio_channel_get_all(struct device *dev); /** * iio_channel_release_all() - reverse iio_channel_get_all @@ -59,6 +65,52 @@ struct iio_channel *iio_channel_get_all(const char *name); */ void iio_channel_release_all(struct iio_channel *chan); +struct iio_cb_buffer; +/** + * iio_channel_get_all_cb() - register callback for triggered capture + * @dev: Pointer to client device. + * @cb: Callback function. + * @private: Private data passed to callback. + * + * NB right now we have no ability to mux data from multiple devices. + * So if the channels requested come from different devices this will + * fail. + */ +struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev, + int (*cb)(const void *data, + void *private), + void *private); +/** + * iio_channel_release_all_cb() - release and unregister the callback. + * @cb_buffer: The callback buffer that was allocated. + */ +void iio_channel_release_all_cb(struct iio_cb_buffer *cb_buffer); + +/** + * iio_channel_start_all_cb() - start the flow of data through callback. + * @cb_buff: The callback buffer we are starting. + */ +int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff); + +/** + * iio_channel_stop_all_cb() - stop the flow of data through the callback. + * @cb_buff: The callback buffer we are stopping. + */ +void iio_channel_stop_all_cb(struct iio_cb_buffer *cb_buff); + +/** + * iio_channel_cb_get_channels() - get access to the underlying channels. + * @cb_buff: The callback buffer from whom we want the channel + * information. + * + * This function allows one to obtain information about the channels. + * Whilst this may allow direct reading if all buffers are disabled, the + * primary aim is to allow drivers that are consuming a channel to query + * things like scaling of the channel. + */ +struct iio_channel +*iio_channel_cb_get_channels(const struct iio_cb_buffer *cb_buffer); + /** * iio_read_channel_raw() - read from a given channel * @chan: The channel being queried. @@ -71,6 +123,19 @@ int iio_read_channel_raw(struct iio_channel *chan, int *val); /** + * iio_read_channel_average_raw() - read from a given channel + * @chan: The channel being queried. + * @val: Value read back. + * + * Note raw reads from iio channels are in adc counts and hence + * scale will need to be applied if standard units required. + * + * In opposit to the normal iio_read_channel_raw this function + * returns the average of multiple reads. + */ +int iio_read_channel_average_raw(struct iio_channel *chan, int *val); + +/** * iio_read_channel_processed() - read processed value from a given channel * @chan: The channel being queried. * @val: Value read back. diff --git a/include/linux/iio/driver.h b/include/linux/iio/driver.h index a4f8b2e05af..7dfb10ee266 100644 --- a/include/linux/iio/driver.h +++ b/include/linux/iio/driver.h @@ -22,13 +22,10 @@ int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *map); /** - * iio_map_array_unregister() - tell the core to remove consumer mappings + * iio_map_array_unregister() - tell the core to remove consumer mappings for + * the given provider device * @indio_dev: provider device - * @map: array of mappings to remove. Note these must have same memory - * addresses as those originally added not just equal parameter - * values. */ -int iio_map_array_unregister(struct iio_dev *indio_dev, - struct iio_map *map); +int iio_map_array_unregister(struct iio_dev *indio_dev); #endif diff --git a/include/linux/iio/events.h b/include/linux/iio/events.h index 13ce220c700..8bbd7bc1043 100644 --- a/include/linux/iio/events.h +++ b/include/linux/iio/events.h @@ -26,20 +26,6 @@ struct iio_event_data { #define IIO_GET_EVENT_FD_IOCTL _IOR('i', 0x90, int) -enum iio_event_type { - IIO_EV_TYPE_THRESH, - IIO_EV_TYPE_MAG, - IIO_EV_TYPE_ROC, - IIO_EV_TYPE_THRESH_ADAPTIVE, - IIO_EV_TYPE_MAG_ADAPTIVE, -}; - -enum iio_event_direction { - IIO_EV_DIR_EITHER, - IIO_EV_DIR_RISING, - IIO_EV_DIR_FALLING, -}; - /** * IIO_EVENT_CODE() - create event identifier * @chan_type: Type of the channel. Should be one of enum iio_chan_type. @@ -60,10 +46,6 @@ enum iio_event_direction { ((u16)chan)) -#define IIO_EV_DIR_MAX 4 -#define IIO_EV_BIT(type, direction) \ - (1 << (type*IIO_EV_DIR_MAX + direction)) - /** * IIO_MOD_EVENT_CODE() - create event identifier for modified channels * @chan_type: Type of the channel. Should be one of enum iio_chan_type. diff --git a/include/linux/iio/frequency/adf4350.h b/include/linux/iio/frequency/adf4350.h index be91f344d5f..ffd8c8f9092 100644 --- a/include/linux/iio/frequency/adf4350.h +++ b/include/linux/iio/frequency/adf4350.h @@ -1,7 +1,7 @@ /* * ADF4350/ADF4351 SPI PLL driver * - * Copyright 2012 Analog Devices Inc. + * Copyright 2012-2013 Analog Devices Inc. * * Licensed under the GPL-2. */ @@ -41,7 +41,7 @@ #define ADF4350_REG2_RDIV2_EN (1 << 24) #define ADF4350_REG2_RMULT2_EN (1 << 25) #define ADF4350_REG2_MUXOUT(x) ((x) << 26) -#define ADF4350_REG2_NOISE_MODE(x) ((x) << 29) +#define ADF4350_REG2_NOISE_MODE(x) (((unsigned)(x)) << 29) #define ADF4350_MUXOUT_THREESTATE 0 #define ADF4350_MUXOUT_DVDD 1 #define ADF4350_MUXOUT_GND 2 diff --git a/include/linux/iio/gyro/itg3200.h b/include/linux/iio/gyro/itg3200.h new file mode 100644 index 00000000000..2a820850f28 --- /dev/null +++ b/include/linux/iio/gyro/itg3200.h @@ -0,0 +1,154 @@ +/* + * itg3200.h -- support InvenSense ITG3200 + * Digital 3-Axis Gyroscope driver + * + * Copyright (c) 2011 Christian Strobel <christian.strobel@iis.fraunhofer.de> + * Copyright (c) 2011 Manuel Stahl <manuel.stahl@iis.fraunhofer.de> + * Copyright (c) 2012 Thorsten Nowak <thorsten.nowak@iis.fraunhofer.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef I2C_ITG3200_H_ +#define I2C_ITG3200_H_ + +#include <linux/iio/iio.h> + +/* Register with I2C address (34h) */ +#define ITG3200_REG_ADDRESS 0x00 + +/* Sample rate divider + * Range: 0 to 255 + * Default value: 0x00 */ +#define ITG3200_REG_SAMPLE_RATE_DIV 0x15 + +/* Digital low pass filter settings */ +#define ITG3200_REG_DLPF 0x16 +/* DLPF full scale range */ +#define ITG3200_DLPF_FS_SEL_2000 0x18 +/* Bandwidth (Hz) and internal sample rate + * (kHz) of DLPF */ +#define ITG3200_DLPF_256_8 0x00 +#define ITG3200_DLPF_188_1 0x01 +#define ITG3200_DLPF_98_1 0x02 +#define ITG3200_DLPF_42_1 0x03 +#define ITG3200_DLPF_20_1 0x04 +#define ITG3200_DLPF_10_1 0x05 +#define ITG3200_DLPF_5_1 0x06 + +#define ITG3200_DLPF_CFG_MASK 0x07 + +/* Configuration for interrupt operations */ +#define ITG3200_REG_IRQ_CONFIG 0x17 +/* Logic level */ +#define ITG3200_IRQ_ACTIVE_LOW 0x80 +#define ITG3200_IRQ_ACTIVE_HIGH 0x00 +/* Drive type */ +#define ITG3200_IRQ_OPEN_DRAIN 0x40 +#define ITG3200_IRQ_PUSH_PULL 0x00 +/* Latch mode */ +#define ITG3200_IRQ_LATCH_UNTIL_CLEARED 0x20 +#define ITG3200_IRQ_LATCH_50US_PULSE 0x00 +/* Latch clear method */ +#define ITG3200_IRQ_LATCH_CLEAR_ANY 0x10 +#define ITG3200_IRQ_LATCH_CLEAR_STATUS 0x00 +/* Enable interrupt when device is ready */ +#define ITG3200_IRQ_DEVICE_RDY_ENABLE 0x04 +/* Enable interrupt when data is available */ +#define ITG3200_IRQ_DATA_RDY_ENABLE 0x01 + +/* Determine the status of ITG-3200 interrupts */ +#define ITG3200_REG_IRQ_STATUS 0x1A +/* Status of 'device is ready'-interrupt */ +#define ITG3200_IRQ_DEVICE_RDY_STATUS 0x04 +/* Status of 'data is available'-interrupt */ +#define ITG3200_IRQ_DATA_RDY_STATUS 0x01 + +/* Sensor registers */ +#define ITG3200_REG_TEMP_OUT_H 0x1B +#define ITG3200_REG_TEMP_OUT_L 0x1C +#define ITG3200_REG_GYRO_XOUT_H 0x1D +#define ITG3200_REG_GYRO_XOUT_L 0x1E +#define ITG3200_REG_GYRO_YOUT_H 0x1F +#define ITG3200_REG_GYRO_YOUT_L 0x20 +#define ITG3200_REG_GYRO_ZOUT_H 0x21 +#define ITG3200_REG_GYRO_ZOUT_L 0x22 + +/* Power management */ +#define ITG3200_REG_POWER_MANAGEMENT 0x3E +/* Reset device and internal registers to the + * power-up-default settings */ +#define ITG3200_RESET 0x80 +/* Enable low power sleep mode */ +#define ITG3200_SLEEP 0x40 +/* Put according gyroscope in standby mode */ +#define ITG3200_STANDBY_GYRO_X 0x20 +#define ITG3200_STANDBY_GYRO_Y 0x10 +#define ITG3200_STANDBY_GYRO_Z 0x08 +/* Determine the device clock source */ +#define ITG3200_CLK_INTERNAL 0x00 +#define ITG3200_CLK_GYRO_X 0x01 +#define ITG3200_CLK_GYRO_Y 0x02 +#define ITG3200_CLK_GYRO_Z 0x03 +#define ITG3200_CLK_EXT_32K 0x04 +#define ITG3200_CLK_EXT_19M 0x05 + + +/** + * struct itg3200 - device instance specific data + * @i2c: actual i2c_client + * @trig: data ready trigger from itg3200 pin + **/ +struct itg3200 { + struct i2c_client *i2c; + struct iio_trigger *trig; +}; + +enum ITG3200_SCAN_INDEX { + ITG3200_SCAN_TEMP, + ITG3200_SCAN_GYRO_X, + ITG3200_SCAN_GYRO_Y, + ITG3200_SCAN_GYRO_Z, + ITG3200_SCAN_ELEMENTS, +}; + +int itg3200_write_reg_8(struct iio_dev *indio_dev, + u8 reg_address, u8 val); + +int itg3200_read_reg_8(struct iio_dev *indio_dev, + u8 reg_address, u8 *val); + + +#ifdef CONFIG_IIO_BUFFER + +void itg3200_remove_trigger(struct iio_dev *indio_dev); +int itg3200_probe_trigger(struct iio_dev *indio_dev); + +int itg3200_buffer_configure(struct iio_dev *indio_dev); +void itg3200_buffer_unconfigure(struct iio_dev *indio_dev); + +#else /* CONFIG_IIO_BUFFER */ + +static inline void itg3200_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int itg3200_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline int itg3200_buffer_configure(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void itg3200_buffer_unconfigure(struct iio_dev *indio_dev) +{ +} + +#endif /* CONFIG_IIO_BUFFER */ + +#endif /* ITG3200_H_ */ diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index c0ae76ac4e0..ccde91725f9 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -36,77 +36,15 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_PHASE, IIO_CHAN_INFO_HARDWAREGAIN, IIO_CHAN_INFO_HYSTERESIS, + IIO_CHAN_INFO_INT_TIME, }; -#define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2) -#define IIO_CHAN_INFO_SEPARATE_BIT(type) BIT(type*2 + 1) -#define IIO_CHAN_INFO_BITS(type) (IIO_CHAN_INFO_SHARED_BIT(type) | \ - IIO_CHAN_INFO_SEPARATE_BIT(type)) - -#define IIO_CHAN_INFO_RAW_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_RAW) -#define IIO_CHAN_INFO_PROCESSED_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PROCESSED) -#define IIO_CHAN_INFO_SCALE_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_SCALE) -#define IIO_CHAN_INFO_SCALE_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_SCALE) -#define IIO_CHAN_INFO_OFFSET_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_OFFSET) -#define IIO_CHAN_INFO_OFFSET_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_OFFSET) -#define IIO_CHAN_INFO_CALIBSCALE_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_CALIBSCALE) -#define IIO_CHAN_INFO_CALIBSCALE_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_CALIBSCALE) -#define IIO_CHAN_INFO_CALIBBIAS_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_CALIBBIAS) -#define IIO_CHAN_INFO_CALIBBIAS_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_CALIBBIAS) -#define IIO_CHAN_INFO_PEAK_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PEAK) -#define IIO_CHAN_INFO_PEAK_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_PEAK) -#define IIO_CHAN_INFO_PEAKSCALE_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PEAKSCALE) -#define IIO_CHAN_INFO_PEAKSCALE_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_PEAKSCALE) -#define IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT( \ - IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW) -#define IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT( \ - IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW) -#define IIO_CHAN_INFO_AVERAGE_RAW_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_AVERAGE_RAW) -#define IIO_CHAN_INFO_AVERAGE_RAW_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_AVERAGE_RAW) -#define IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT( \ - IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) -#define IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT( \ - IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) -#define IIO_CHAN_INFO_SAMP_FREQ_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_SAMP_FREQ) -#define IIO_CHAN_INFO_SAMP_FREQ_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_SAMP_FREQ) -#define IIO_CHAN_INFO_FREQUENCY_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_FREQUENCY) -#define IIO_CHAN_INFO_FREQUENCY_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_FREQUENCY) -#define IIO_CHAN_INFO_PHASE_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PHASE) -#define IIO_CHAN_INFO_PHASE_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_PHASE) -#define IIO_CHAN_INFO_HARDWAREGAIN_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HARDWAREGAIN) -#define IIO_CHAN_INFO_HARDWAREGAIN_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HARDWAREGAIN) -#define IIO_CHAN_INFO_HYSTERESIS_SEPARATE_BIT \ - IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HYSTERESIS) -#define IIO_CHAN_INFO_HYSTERESIS_SHARED_BIT \ - IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HYSTERESIS) +enum iio_shared_by { + IIO_SEPARATE, + IIO_SHARED_BY_TYPE, + IIO_SHARED_BY_DIR, + IIO_SHARED_BY_ALL +}; enum iio_endian { IIO_CPU, @@ -127,7 +65,7 @@ struct iio_dev; */ struct iio_chan_spec_ext_info { const char *name; - bool shared; + enum iio_shared_by shared; ssize_t (*read)(struct iio_dev *, uintptr_t private, struct iio_chan_spec const *, char *buf); ssize_t (*write)(struct iio_dev *, uintptr_t private, @@ -195,12 +133,35 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev, #define IIO_ENUM_AVAILABLE(_name, _e) \ { \ .name = (_name "_available"), \ - .shared = true, \ + .shared = IIO_SHARED_BY_TYPE, \ .read = iio_enum_available_read, \ .private = (uintptr_t)(_e), \ } /** + * struct iio_event_spec - specification for a channel event + * @type: Type of the event + * @dir: Direction of the event + * @mask_separate: Bit mask of enum iio_event_info values. Attributes + * set in this mask will be registered per channel. + * @mask_shared_by_type: Bit mask of enum iio_event_info values. Attributes + * set in this mask will be shared by channel type. + * @mask_shared_by_dir: Bit mask of enum iio_event_info values. Attributes + * set in this mask will be shared by channel type and + * direction. + * @mask_shared_by_all: Bit mask of enum iio_event_info values. Attributes + * set in this mask will be shared by all channels. + */ +struct iio_event_spec { + enum iio_event_type type; + enum iio_event_direction dir; + unsigned long mask_separate; + unsigned long mask_shared_by_type; + unsigned long mask_shared_by_dir; + unsigned long mask_shared_by_all; +}; + +/** * struct iio_chan_spec - specification of a single channel * @type: What type of measurement is the channel making. * @channel: What number do we wish to assign the channel. @@ -216,9 +177,23 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev, * shift: Shift right by this before masking out * realbits. * endianness: little or big endian - * @info_mask: What information is to be exported about this channel. - * This includes calibbias, scale etc. - * @event_mask: What events can this channel produce. + * repeat: Number of times real/storage bits + * repeats. When the repeat element is + * more than 1, then the type element in + * sysfs will show a repeat value. + * Otherwise, the number of repetitions is + * omitted. + * @info_mask_separate: What information is to be exported that is specific to + * this channel. + * @info_mask_shared_by_type: What information is to be exported that is shared + * by all channels of the same type. + * @info_mask_shared_by_dir: What information is to be exported that is shared + * by all channels of the same direction. + * @info_mask_shared_by_all: What information is to be exported that is shared + * by all channels. + * @event_spec: Array of events which should be registered for this + * channel. + * @num_event_specs: Size of the event_spec array. * @ext_info: Array of extended info attributes for this channel. * The array is NULL terminated, the last element should * have its name field set to NULL. @@ -250,10 +225,15 @@ struct iio_chan_spec { u8 realbits; u8 storagebits; u8 shift; + u8 repeat; enum iio_endian endianness; } scan_type; - long info_mask; - long event_mask; + long info_mask_separate; + long info_mask_shared_by_type; + long info_mask_shared_by_dir; + long info_mask_shared_by_all; + const struct iio_event_spec *event_spec; + unsigned int num_event_specs; const struct iio_chan_spec_ext_info *ext_info; const char *extend_name; const char *datasheet_name; @@ -275,15 +255,22 @@ struct iio_chan_spec { static inline bool iio_channel_has_info(const struct iio_chan_spec *chan, enum iio_chan_info_enum type) { - return chan->info_mask & IIO_CHAN_INFO_BITS(type); + return (chan->info_mask_separate & BIT(type)) | + (chan->info_mask_shared_by_type & BIT(type)) | + (chan->info_mask_shared_by_dir & BIT(type)) | + (chan->info_mask_shared_by_all & BIT(type)); } -#define IIO_ST(si, rb, sb, sh) \ - { .sign = si, .realbits = rb, .storagebits = sb, .shift = sh } - -#define IIO_CHAN_SOFT_TIMESTAMP(_si) \ - { .type = IIO_TIMESTAMP, .channel = -1, \ - .scan_index = _si, .scan_type = IIO_ST('s', 64, 64, 0) } +#define IIO_CHAN_SOFT_TIMESTAMP(_si) { \ + .type = IIO_TIMESTAMP, \ + .channel = -1, \ + .scan_index = _si, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 64, \ + .storagebits = 64, \ + }, \ +} /** * iio_get_time_ns() - utility function to get a time stamp for events etc @@ -308,6 +295,8 @@ static inline s64 iio_get_time_ns(void) #define INDIO_ALL_BUFFER_MODES \ (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE) +#define INDIO_MAX_RAW_ELEMENTS 4 + struct iio_trigger; /* forward declaration */ struct iio_dev; @@ -322,6 +311,14 @@ struct iio_dev; * the channel in question. Return value will specify the * type of value returned by the device. val and val2 will * contain the elements making up the returned value. + * @read_raw_multi: function to return values from the device. + * mask specifies which value. Note 0 means a reading of + * the channel in question. Return value will specify the + * type of value returned by the device. vals pointer + * contain the elements making up the returned value. + * max_len specifies maximum number of elements + * vals pointer can contain. val_len is used to return + * length of valid elements in vals. * @write_raw: function to write a value to the device. * Parameters are the same as for read_raw. * @write_raw_get_fmt: callback function to query the expected @@ -329,10 +326,8 @@ struct iio_dev; * returns IIO_VAL_INT_PLUS_MICRO. * @read_event_config: find out if the event is enabled. * @write_event_config: set if the event is enabled. - * @read_event_value: read a value associated with the event. Meaning - * is event dependant. event_code specifies which event. - * @write_event_value: write the value associated with the event. - * Meaning is event dependent. + * @read_event_value: read a configuration value associated with the event. + * @write_event_value: write a configuration value for the event. * @validate_trigger: function to validate the trigger when the * current trigger gets changed. * @update_scan_mode: function to configure device and scan buffer when @@ -350,6 +345,13 @@ struct iio_info { int *val2, long mask); + int (*read_raw_multi)(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int max_len, + int *vals, + int *val_len, + long mask); + int (*write_raw)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, @@ -361,18 +363,28 @@ struct iio_info { long mask); int (*read_event_config)(struct iio_dev *indio_dev, - u64 event_code); + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir); int (*write_event_config)(struct iio_dev *indio_dev, - u64 event_code, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, int state); int (*read_event_value)(struct iio_dev *indio_dev, - u64 event_code, - int *val); + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int *val, int *val2); + int (*write_event_value)(struct iio_dev *indio_dev, - u64 event_code, - int val); + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int val, int val2); + int (*validate_trigger)(struct iio_dev *indio_dev, struct iio_trigger *trig); int (*update_scan_mode)(struct iio_dev *indio_dev, @@ -410,6 +422,7 @@ struct iio_buffer_setup_ops { * and owner * @event_interface: [INTERN] event chrdevs associated with interrupt lines * @buffer: [DRIVER] any buffer present + * @buffer_list: [INTERN] list of all buffers currently attached * @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux * @mlock: [INTERN] lock used to prevent simultaneous device state * changes @@ -448,6 +461,7 @@ struct iio_dev { struct iio_event_interface *event_interface; struct iio_buffer *buffer; + struct list_head buffer_list; int scan_bytes; struct mutex mlock; @@ -480,32 +494,12 @@ struct iio_dev { #endif }; -/** - * iio_find_channel_from_si() - get channel from its scan index - * @indio_dev: device - * @si: scan index to match - */ const struct iio_chan_spec *iio_find_channel_from_si(struct iio_dev *indio_dev, int si); - -/** - * iio_device_register() - register a device with the IIO subsystem - * @indio_dev: Device structure filled by the device driver - **/ int iio_device_register(struct iio_dev *indio_dev); - -/** - * iio_device_unregister() - unregister a device from the IIO subsystem - * @indio_dev: Device structure representing the device. - **/ void iio_device_unregister(struct iio_dev *indio_dev); - -/** - * iio_push_event() - try to add event to the list for userspace reading - * @indio_dev: IIO device structure - * @ev_code: What event - * @timestamp: When the event occurred - **/ +int devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev); +void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev); int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp); extern struct bus_type iio_bus_type; @@ -518,7 +512,7 @@ static inline void iio_device_put(struct iio_dev *indio_dev) { if (indio_dev) put_device(&indio_dev->dev); -}; +} /** * dev_to_iio_dev() - Get IIO device struct from a device struct @@ -569,10 +563,6 @@ static inline void *iio_device_get_drvdata(struct iio_dev *indio_dev) /* Can we make this smaller? */ #define IIO_ALIGN L1_CACHE_BYTES -/** - * iio_device_alloc() - allocate an iio_dev from a driver - * @sizeof_priv: Space to allocate for private structure. - **/ struct iio_dev *iio_device_alloc(int sizeof_priv); static inline void *iio_priv(const struct iio_dev *indio_dev) @@ -586,11 +576,12 @@ static inline struct iio_dev *iio_priv_to_dev(void *priv) ALIGN(sizeof(struct iio_dev), IIO_ALIGN)); } -/** - * iio_device_free() - free an iio_dev from a driver - * @indio_dev: the iio_dev associated with the device - **/ void iio_device_free(struct iio_dev *indio_dev); +struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv); +void devm_iio_device_free(struct device *dev, struct iio_dev *indio_dev); +struct iio_trigger *devm_iio_trigger_alloc(struct device *dev, + const char *fmt, ...); +void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig); /** * iio_buffer_enabled() - helper function to test if the buffer is enabled @@ -600,7 +591,7 @@ static inline bool iio_buffer_enabled(struct iio_dev *indio_dev) { return indio_dev->currentmode & (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE); -}; +} /** * iio_get_debugfs_dentry() - helper function to get the debugfs_dentry @@ -610,12 +601,31 @@ static inline bool iio_buffer_enabled(struct iio_dev *indio_dev) static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev) { return indio_dev->debugfs_dentry; -}; +} #else static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev) { return NULL; -}; +} #endif +int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer, + int *fract); + +/** + * IIO_DEGREE_TO_RAD() - Convert degree to rad + * @deg: A value in degree + * + * Returns the given value converted from degree to rad + */ +#define IIO_DEGREE_TO_RAD(deg) (((deg) * 314159ULL + 9000000ULL) / 18000000ULL) + +/** + * IIO_G_TO_M_S_2() - Convert g to meter / second**2 + * @g: A value in g + * + * Returns the given value converted from g to meter / second**2 + */ +#define IIO_G_TO_M_S_2(g) ((g) * 980665ULL / 100000ULL) + #endif /* _INDUSTRIAL_IO_H_ */ diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h new file mode 100644 index 00000000000..b665dc7f017 --- /dev/null +++ b/include/linux/iio/imu/adis.h @@ -0,0 +1,280 @@ +/* + * Common library for ADIS16XXX devices + * + * Copyright 2012 Analog Devices Inc. + * Author: Lars-Peter Clausen <lars@metafoo.de> + * + * Licensed under the GPL-2 or later. + */ + +#ifndef __IIO_ADIS_H__ +#define __IIO_ADIS_H__ + +#include <linux/spi/spi.h> +#include <linux/interrupt.h> +#include <linux/iio/types.h> + +#define ADIS_WRITE_REG(reg) ((0x80 | (reg))) +#define ADIS_READ_REG(reg) ((reg) & 0x7f) + +#define ADIS_PAGE_SIZE 0x80 +#define ADIS_REG_PAGE_ID 0x00 + +struct adis; + +/** + * struct adis_data - ADIS chip variant specific data + * @read_delay: SPI delay for read operations in us + * @write_delay: SPI delay for write operations in us + * @glob_cmd_reg: Register address of the GLOB_CMD register + * @msc_ctrl_reg: Register address of the MSC_CTRL register + * @diag_stat_reg: Register address of the DIAG_STAT register + * @status_error_msgs: Array of error messgaes + * @status_error_mask: + */ +struct adis_data { + unsigned int read_delay; + unsigned int write_delay; + + unsigned int glob_cmd_reg; + unsigned int msc_ctrl_reg; + unsigned int diag_stat_reg; + + unsigned int self_test_mask; + unsigned int startup_delay; + + const char * const *status_error_msgs; + unsigned int status_error_mask; + + int (*enable_irq)(struct adis *adis, bool enable); + + bool has_paging; +}; + +struct adis { + struct spi_device *spi; + struct iio_trigger *trig; + + const struct adis_data *data; + + struct mutex txrx_lock; + struct spi_message msg; + struct spi_transfer *xfer; + unsigned int current_page; + void *buffer; + + uint8_t tx[10] ____cacheline_aligned; + uint8_t rx[4]; +}; + +int adis_init(struct adis *adis, struct iio_dev *indio_dev, + struct spi_device *spi, const struct adis_data *data); +int adis_reset(struct adis *adis); + +int adis_write_reg(struct adis *adis, unsigned int reg, + unsigned int val, unsigned int size); +int adis_read_reg(struct adis *adis, unsigned int reg, + unsigned int *val, unsigned int size); + +/** + * adis_write_reg_8() - Write single byte to a register + * @adis: The adis device + * @reg: The address of the register to be written + * @value: The value to write + */ +static inline int adis_write_reg_8(struct adis *adis, unsigned int reg, + uint8_t val) +{ + return adis_write_reg(adis, reg, val, 1); +} + +/** + * adis_write_reg_16() - Write 2 bytes to a pair of registers + * @adis: The adis device + * @reg: The address of the lower of the two registers + * @value: Value to be written + */ +static inline int adis_write_reg_16(struct adis *adis, unsigned int reg, + uint16_t val) +{ + return adis_write_reg(adis, reg, val, 2); +} + +/** + * adis_write_reg_32() - write 4 bytes to four registers + * @adis: The adis device + * @reg: The address of the lower of the four register + * @value: Value to be written + */ +static inline int adis_write_reg_32(struct adis *adis, unsigned int reg, + uint32_t val) +{ + return adis_write_reg(adis, reg, val, 4); +} + +/** + * adis_read_reg_16() - read 2 bytes from a 16-bit register + * @adis: The adis device + * @reg: The address of the lower of the two registers + * @val: The value read back from the device + */ +static inline int adis_read_reg_16(struct adis *adis, unsigned int reg, + uint16_t *val) +{ + unsigned int tmp; + int ret; + + ret = adis_read_reg(adis, reg, &tmp, 2); + *val = tmp; + + return ret; +} + +/** + * adis_read_reg_32() - read 4 bytes from a 32-bit register + * @adis: The adis device + * @reg: The address of the lower of the two registers + * @val: The value read back from the device + */ +static inline int adis_read_reg_32(struct adis *adis, unsigned int reg, + uint32_t *val) +{ + unsigned int tmp; + int ret; + + ret = adis_read_reg(adis, reg, &tmp, 4); + *val = tmp; + + return ret; +} + +int adis_enable_irq(struct adis *adis, bool enable); +int adis_check_status(struct adis *adis); + +int adis_initial_startup(struct adis *adis); + +int adis_single_conversion(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, unsigned int error_mask, + int *val); + +#define ADIS_VOLTAGE_CHAN(addr, si, chan, name, bits) { \ + .type = IIO_VOLTAGE, \ + .indexed = 1, \ + .channel = (chan), \ + .extend_name = name, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .address = (addr), \ + .scan_index = (si), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = (bits), \ + .storagebits = 16, \ + .endianness = IIO_BE, \ + }, \ +} + +#define ADIS_SUPPLY_CHAN(addr, si, bits) \ + ADIS_VOLTAGE_CHAN(addr, si, 0, "supply", bits) + +#define ADIS_AUX_ADC_CHAN(addr, si, bits) \ + ADIS_VOLTAGE_CHAN(addr, si, 1, NULL, bits) + +#define ADIS_TEMP_CHAN(addr, si, bits) { \ + .type = IIO_TEMP, \ + .indexed = 1, \ + .channel = 0, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_OFFSET), \ + .address = (addr), \ + .scan_index = (si), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = (bits), \ + .storagebits = 16, \ + .endianness = IIO_BE, \ + }, \ +} + +#define ADIS_MOD_CHAN(_type, mod, addr, si, info_sep, bits) { \ + .type = (_type), \ + .modified = 1, \ + .channel2 = IIO_MOD_ ## mod, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + info_sep, \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .address = (addr), \ + .scan_index = (si), \ + .scan_type = { \ + .sign = 's', \ + .realbits = (bits), \ + .storagebits = 16, \ + .endianness = IIO_BE, \ + }, \ +} + +#define ADIS_ACCEL_CHAN(mod, addr, si, info_sep, bits) \ + ADIS_MOD_CHAN(IIO_ACCEL, mod, addr, si, info_sep, bits) + +#define ADIS_GYRO_CHAN(mod, addr, si, info_sep, bits) \ + ADIS_MOD_CHAN(IIO_ANGL_VEL, mod, addr, si, info_sep, bits) + +#define ADIS_INCLI_CHAN(mod, addr, si, info_sep, bits) \ + ADIS_MOD_CHAN(IIO_INCLI, mod, addr, si, info_sep, bits) + +#define ADIS_ROT_CHAN(mod, addr, si, info_sep, bits) \ + ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info_sep, bits) + +#ifdef CONFIG_IIO_ADIS_LIB_BUFFER + +int adis_setup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *)); +void adis_cleanup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev); + +int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev); +void adis_remove_trigger(struct adis *adis); + +int adis_update_scan_mode(struct iio_dev *indio_dev, + const unsigned long *scan_mask); + +#else /* CONFIG_IIO_BUFFER */ + +static inline int adis_setup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *)) +{ + return 0; +} + +static inline void adis_cleanup_buffer_and_trigger(struct adis *adis, + struct iio_dev *indio_dev) +{ +} + +static inline int adis_probe_trigger(struct adis *adis, + struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis_remove_trigger(struct adis *adis) +{ +} + +#define adis_update_scan_mode NULL + +#endif /* CONFIG_IIO_BUFFER */ + +#ifdef CONFIG_DEBUG_FS + +int adis_debugfs_reg_access(struct iio_dev *indio_dev, + unsigned int reg, unsigned int writeval, unsigned int *readval); + +#else + +#define adis_debugfs_reg_access NULL + +#endif + +#endif diff --git a/include/linux/iio/machine.h b/include/linux/iio/machine.h index 809a3f08d5a..1601a2a63a7 100644 --- a/include/linux/iio/machine.h +++ b/include/linux/iio/machine.h @@ -19,11 +19,13 @@ * @consumer_dev_name: Name to uniquely identify the consumer device. * @consumer_channel: Unique name used to identify the channel on the * consumer side. + * @consumer_data: Data about the channel for use by the consumer driver. */ struct iio_map { const char *adc_channel_label; const char *consumer_dev_name; const char *consumer_channel; + void *consumer_data; }; #endif diff --git a/include/linux/iio/sysfs.h b/include/linux/iio/sysfs.h index b7a934b9431..8a1d18640ab 100644 --- a/include/linux/iio/sysfs.h +++ b/include/linux/iio/sysfs.h @@ -73,11 +73,6 @@ struct iio_const_attr { .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)} /* Generic attributes of onetype or another */ -/** - * IIO_DEV_ATTR_RESET: resets the device - **/ -#define IIO_DEV_ATTR_RESET(_store) \ - IIO_DEVICE_ATTR(reset, S_IWUSR, NULL, _store, 0) /** * IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency @@ -105,6 +100,21 @@ struct iio_const_attr { #define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string) \ IIO_CONST_ATTR(sampling_frequency_available, _string) +/** + * IIO_DEV_ATTR_INT_TIME_AVAIL - list available integration times + * @_show: output method for the attribute + **/ +#define IIO_DEV_ATTR_INT_TIME_AVAIL(_show) \ + IIO_DEVICE_ATTR(integration_time_available, S_IRUGO, _show, NULL, 0) +/** + * IIO_CONST_ATTR_INT_TIME_AVAIL - list available integration times + * @_string: frequency string for the attribute + * + * Constant version + **/ +#define IIO_CONST_ATTR_INT_TIME_AVAIL(_string) \ + IIO_CONST_ATTR(integration_time_available, _string) + #define IIO_DEV_ATTR_TEMP_RAW(_show) \ IIO_DEVICE_ATTR(in_temp_raw, S_IRUGO, _show, NULL, 0) diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h index 20239da1d0f..369cf2cd514 100644 --- a/include/linux/iio/trigger.h +++ b/include/linux/iio/trigger.h @@ -8,10 +8,12 @@ */ #include <linux/irq.h> #include <linux/module.h> +#include <linux/atomic.h> #ifndef _IIO_TRIGGER_H_ #define _IIO_TRIGGER_H_ +#ifdef CONFIG_IIO_TRIGGER struct iio_subirq { bool enabled; }; @@ -43,7 +45,6 @@ struct iio_trigger_ops { * @id: [INTERN] unique id number * @name: [DRIVER] unique name * @dev: [DRIVER] associated device (if relevant) - * @private_data: [DRIVER] device specific data * @list: [INTERN] used in maintenance of global trigger list * @alloc_list: [DRIVER] used for driver specific trigger list * @use_count: use count for the trigger @@ -59,10 +60,9 @@ struct iio_trigger { const char *name; struct device dev; - void *private_data; struct list_head list; struct list_head alloc_list; - int use_count; + atomic_t use_count; struct irq_chip subirq_chip; int subirq_base; @@ -91,6 +91,30 @@ static inline void iio_trigger_get(struct iio_trigger *trig) } /** + * iio_device_set_drvdata() - Set trigger driver data + * @trig: IIO trigger structure + * @data: Driver specific data + * + * Allows to attach an arbitrary pointer to an IIO trigger, which can later be + * retrieved by iio_trigger_get_drvdata(). + */ +static inline void iio_trigger_set_drvdata(struct iio_trigger *trig, void *data) +{ + dev_set_drvdata(&trig->dev, data); +} + +/** + * iio_trigger_get_drvdata() - Get trigger driver data + * @trig: IIO trigger structure + * + * Returns the data previously set with iio_trigger_set_drvdata() + */ +static inline void *iio_trigger_get_drvdata(struct iio_trigger *trig) +{ + return dev_get_drvdata(&trig->dev); +} + +/** * iio_trigger_register() - register a trigger with the IIO core * @trig_info: trigger to be registered **/ @@ -117,4 +141,8 @@ irqreturn_t iio_trigger_generic_data_rdy_poll(int irq, void *private); __printf(1, 2) struct iio_trigger *iio_trigger_alloc(const char *fmt, ...); void iio_trigger_free(struct iio_trigger *trig); +#else +struct iio_trigger; +struct iio_trigger_ops; +#endif #endif /* _IIO_TRIGGER_H_ */ diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 5c647ecfd5b..d480631eabc 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -28,6 +28,8 @@ enum iio_chan_type { IIO_CAPACITANCE, IIO_ALTVOLTAGE, IIO_CCT, + IIO_PRESSURE, + IIO_HUMIDITYRELATIVE, }; enum iio_modifier { @@ -51,12 +53,37 @@ enum iio_modifier { IIO_MOD_LIGHT_RED, IIO_MOD_LIGHT_GREEN, IIO_MOD_LIGHT_BLUE, + IIO_MOD_QUATERNION, + IIO_MOD_TEMP_AMBIENT, + IIO_MOD_TEMP_OBJECT, +}; + +enum iio_event_type { + IIO_EV_TYPE_THRESH, + IIO_EV_TYPE_MAG, + IIO_EV_TYPE_ROC, + IIO_EV_TYPE_THRESH_ADAPTIVE, + IIO_EV_TYPE_MAG_ADAPTIVE, +}; + +enum iio_event_info { + IIO_EV_INFO_ENABLE, + IIO_EV_INFO_VALUE, + IIO_EV_INFO_HYSTERESIS, +}; + +enum iio_event_direction { + IIO_EV_DIR_EITHER, + IIO_EV_DIR_RISING, + IIO_EV_DIR_FALLING, }; #define IIO_VAL_INT 1 #define IIO_VAL_INT_PLUS_MICRO 2 #define IIO_VAL_INT_PLUS_NANO 3 #define IIO_VAL_INT_PLUS_MICRO_DB 4 +#define IIO_VAL_INT_MULTIPLE 5 #define IIO_VAL_FRACTIONAL 10 +#define IIO_VAL_FRACTIONAL_LOG2 11 #endif /* _IIO_TYPES_H_ */ |