diff options
Diffstat (limited to 'include/linux/iio/common/cros_ec_sensors_core.h')
| -rw-r--r-- | include/linux/iio/common/cros_ec_sensors_core.h | 104 |
1 files changed, 14 insertions, 90 deletions
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h index bb331e6356a9..7bc961defa87 100644 --- a/include/linux/iio/common/cros_ec_sensors_core.h +++ b/include/linux/iio/common/cros_ec_sensors_core.h @@ -12,6 +12,7 @@ #include <linux/irqreturn.h> #include <linux/platform_data/cros_ec_commands.h> #include <linux/platform_data/cros_ec_proto.h> +#include <linux/platform_data/cros_ec_sensorhub.h> enum { CROS_EC_SENSOR_X, @@ -29,8 +30,7 @@ enum { */ #define CROS_EC_SAMPLE_SIZE (sizeof(s64) * 2) -/* Minimum sampling period to use when device is suspending */ -#define CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY 1000 /* 1 second */ +typedef irqreturn_t (*cros_ec_sensors_capture_t)(int irq, void *p); /** * struct cros_ec_sensors_core_state - state data for EC sensors IIO driver @@ -50,7 +50,9 @@ enum { * the timestamp. The timestamp is always last and * is always 8-byte aligned. * @read_ec_sensors_data: function used for accessing sensors values - * @cuur_sampl_freq: current sampling period + * @fifo_max_event_count: Size of the EC sensor FIFO + * @frequencies: Table of known available frequencies: + * 0, Min and Max in mHz */ struct cros_ec_sensors_core_state { struct cros_ec_device *ec; @@ -73,101 +75,34 @@ struct cros_ec_sensors_core_state { int (*read_ec_sensors_data)(struct iio_dev *indio_dev, unsigned long scan_mask, s16 *data); - int curr_sampl_freq; - - /* Table of known available frequencies : 0, Min and Max in mHz */ - int frequencies[3]; + u32 fifo_max_event_count; + int frequencies[6]; }; -/** - * cros_ec_sensors_read_lpc() - retrieve data from EC shared memory - * @indio_dev: pointer to IIO device - * @scan_mask: bitmap of the sensor indices to scan - * @data: location to store data - * - * This is the safe function for reading the EC data. It guarantees that the - * data sampled was not modified by the EC while being read. - * - * Return: 0 on success, -errno on failure. - */ int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev, unsigned long scan_mask, s16 *data); -/** - * cros_ec_sensors_read_cmd() - retrieve data using the EC command protocol - * @indio_dev: pointer to IIO device - * @scan_mask: bitmap of the sensor indices to scan - * @data: location to store data - * - * Return: 0 on success, -errno on failure. - */ int cros_ec_sensors_read_cmd(struct iio_dev *indio_dev, unsigned long scan_mask, s16 *data); struct platform_device; -/** - * cros_ec_sensors_core_init() - basic initialization of the core structure - * @pdev: platform device created for the sensors - * @indio_dev: iio device structure of the device - * @physical_device: true if the device refers to a physical device - * - * Return: 0 on success, -errno on failure. - */ int cros_ec_sensors_core_init(struct platform_device *pdev, - struct iio_dev *indio_dev, bool physical_device); + struct iio_dev *indio_dev, bool physical_device, + cros_ec_sensors_capture_t trigger_capture, + cros_ec_sensorhub_push_data_cb_t push_data); -/** - * cros_ec_sensors_capture() - the trigger handler function - * @irq: the interrupt number. - * @p: a pointer to the poll function. - * - * On a trigger event occurring, if the pollfunc is attached then this - * handler is called as a threaded interrupt (and hence may sleep). It - * is responsible for grabbing data from the device and pushing it into - * the associated buffer. - * - * Return: IRQ_HANDLED - */ irqreturn_t cros_ec_sensors_capture(int irq, void *p); +int cros_ec_sensors_push_data(struct iio_dev *indio_dev, + s16 *data, + s64 timestamp); -/** - * cros_ec_motion_send_host_cmd() - send motion sense host command - * @st: pointer to state information for device - * @opt_length: optional length to reduce the response size, useful on the data - * path. Otherwise, the maximal allowed response size is used - * - * When called, the sub-command is assumed to be set in param->cmd. - * - * Return: 0 on success, -errno on failure. - */ int cros_ec_motion_send_host_cmd(struct cros_ec_sensors_core_state *st, u16 opt_length); -/** - * cros_ec_sensors_core_read() - function to request a value from the sensor - * @st: pointer to state information for device - * @chan: channel specification structure table - * @val: will contain one element making up the returned value - * @val2: will contain another element making up the returned value - * @mask: specifies which values to be requested - * - * Return: the type of value returned by the device - */ int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st, struct iio_chan_spec const *chan, int *val, int *val2, long mask); -/** - * cros_ec_sensors_core_read_avail() - get available values - * @indio_dev: pointer to state information for device - * @chan: channel specification structure table - * @vals: list of available values - * @type: type of data returned - * @length: number of data returned in the array - * @mask: specifies which values to be requested - * - * Return: an error code, IIO_AVAIL_RANGE or IIO_AVAIL_LIST - */ int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, const int **vals, @@ -175,23 +110,12 @@ int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev, int *length, long mask); -/** - * cros_ec_sensors_core_write() - function to write a value to the sensor - * @st: pointer to state information for device - * @chan: channel specification structure table - * @val: first part of value to write - * @val2: second part of value to write - * @mask: specifies which values to write - * - * Return: the type of value returned by the device - */ int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st, struct iio_chan_spec const *chan, int val, int val2, long mask); -extern const struct dev_pm_ops cros_ec_sensors_pm_ops; - /* List of extended channel specification for all sensors */ extern const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[]; +extern const struct attribute *cros_ec_sensor_fifo_attributes[]; #endif /* __CROS_EC_SENSORS_CORE_H */ |