diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/Kbuild | 2 | ||||
| -rw-r--r-- | include/linux/alarmtimer.h | 3 | ||||
| -rw-r--r-- | include/linux/iio/buffer.h | 191 | ||||
| -rw-r--r-- | include/linux/iio/consumer.h | 96 | ||||
| -rw-r--r-- | include/linux/iio/driver.h | 34 | ||||
| -rw-r--r-- | include/linux/iio/events.h | 105 | ||||
| -rw-r--r-- | include/linux/iio/iio.h | 492 | ||||
| -rw-r--r-- | include/linux/iio/kfifo_buf.h | 8 | ||||
| -rw-r--r-- | include/linux/iio/machine.h | 24 | ||||
| -rw-r--r-- | include/linux/iio/sysfs.h | 117 | ||||
| -rw-r--r-- | include/linux/iio/trigger.h | 119 | ||||
| -rw-r--r-- | include/linux/iio/trigger_consumer.h | 52 | ||||
| -rw-r--r-- | include/linux/iio/types.h | 55 | ||||
| -rw-r--r-- | include/linux/mei.h | 110 | ||||
| -rw-r--r-- | include/linux/platform_data/at91_adc.h | 61 | ||||
| -rw-r--r-- | include/linux/pstore_ram.h | 98 | ||||
| -rw-r--r-- | include/linux/ramoops.h | 17 | ||||
| -rw-r--r-- | include/linux/uuid.h | 4 | ||||
| -rw-r--r-- | include/linux/vme.h | 174 |
19 files changed, 1745 insertions, 17 deletions
diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 0237b84ba541..39737839ce29 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -238,6 +238,7 @@ header-y += map_to_7segment.h header-y += matroxfb.h header-y += mdio.h header-y += media.h +header-y += mei.h header-y += mempolicy.h header-y += meye.h header-y += mii.h @@ -380,6 +381,7 @@ header-y += unistd.h header-y += usbdevice_fs.h header-y += utime.h header-y += utsname.h +header-y += uuid.h header-y += uvcvideo.h header-y += v4l2-mediabus.h header-y += v4l2-subdev.h diff --git a/include/linux/alarmtimer.h b/include/linux/alarmtimer.h index 975009e1cbe6..96c5c249b086 100644 --- a/include/linux/alarmtimer.h +++ b/include/linux/alarmtimer.h @@ -76,4 +76,7 @@ static inline int alarmtimer_callback_running(struct alarm *timer) } +/* Provide way to access the rtc device being used by alarmtimers */ +struct rtc_device *alarmtimer_get_rtcdev(void); + #endif diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h new file mode 100644 index 000000000000..fb0fe46fd659 --- /dev/null +++ b/include/linux/iio/buffer.h @@ -0,0 +1,191 @@ +/* The industrial I/O core - generic buffer interfaces. + * + * Copyright (c) 2008 Jonathan Cameron + * + * 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 _IIO_BUFFER_GENERIC_H_ +#define _IIO_BUFFER_GENERIC_H_ +#include <linux/sysfs.h> +#include <linux/iio/iio.h> + +#ifdef CONFIG_IIO_BUFFER + +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) + * @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 + * + * The purpose of this structure is to make the buffer element + * modular as event for a given driver, different usecases may require + * different buffer designs (space efficiency vs speed for example). + * + * It is worth noting that a given buffer implementation may only support a + * small proportion of these functions. The core code 'should' cope fine with + * any of them not existing. + **/ +struct iio_buffer_access_funcs { + int (*store_to)(struct iio_buffer *buffer, u8 *data, s64 timestamp); + int (*read_first_n)(struct iio_buffer *buffer, + size_t n, + char __user *buf); + + int (*request_update)(struct iio_buffer *buffer); + + int (*get_bytes_per_datum)(struct iio_buffer *buffer); + 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); +}; + +/** + * struct iio_buffer - general buffer structure + * @length: [DEVICE] number of datums in buffer + * @bytes_per_datum: [DEVICE] size of individual datum including timestamp + * @scan_el_attrs: [DRIVER] control of scan elements if that scan mode + * control method is used + * @scan_mask: [INTERN] bitmask used in masking scan mode elements + * @scan_timestamp: [INTERN] does the scan mode include a timestamp + * @access: [DRIVER] buffer access functions associated with the + * implementation. + * @scan_el_dev_attr_list:[INTERN] list of scan element related attributes. + * @scan_el_group: [DRIVER] attribute group for those attributes not + * created from the iio_chan_info array. + * @pollq: [INTERN] wait queue to allow for polling on the buffer. + * @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. + **/ +struct iio_buffer { + int length; + int bytes_per_datum; + struct attribute_group *scan_el_attrs; + long *scan_mask; + bool scan_timestamp; + const struct iio_buffer_access_funcs *access; + struct list_head scan_el_dev_attr_list; + struct attribute_group scan_el_group; + wait_queue_head_t pollq; + bool stufftoread; + const struct attribute_group *attrs; + struct list_head demux_list; + unsigned char *demux_bounce; +}; + +/** + * 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); + +/** + * iio_scan_mask_set() - set particular bit in the scan mask + * @buffer: the buffer whose scan mask we are interested in + * @bit: the bit to be set. + **/ +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 + * @scan: Full scan. + * @timestamp: + */ +int iio_push_to_buffer(struct iio_buffer *buffer, unsigned char *data, + s64 timestamp); + +int iio_update_demux(struct iio_dev *indio_dev); + +/** + * iio_buffer_register() - register the buffer with IIO core + * @indio_dev: device with the buffer to be registered + **/ +int iio_buffer_register(struct iio_dev *indio_dev, + const struct iio_chan_spec *channels, + int num_channels); + +/** + * iio_buffer_unregister() - unregister the buffer from IIO core + * @indio_dev: the device with the buffer to be unregistered + **/ +void iio_buffer_unregister(struct iio_dev *indio_dev); + +/** + * iio_buffer_read_length() - attr func to get number of datums in the buffer + **/ +ssize_t iio_buffer_read_length(struct device *dev, + struct device_attribute *attr, + char *buf); +/** + * iio_buffer_write_length() - attr func to set number of datums in the buffer + **/ +ssize_t iio_buffer_write_length(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t len); +/** + * iio_buffer_store_enable() - attr to turn the buffer on + **/ +ssize_t iio_buffer_store_enable(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t len); +/** + * iio_buffer_show_enable() - attr to see if the buffer is on + **/ +ssize_t iio_buffer_show_enable(struct device *dev, + struct device_attribute *attr, + char *buf); +#define IIO_BUFFER_LENGTH_ATTR DEVICE_ATTR(length, S_IRUGO | S_IWUSR, \ + iio_buffer_read_length, \ + iio_buffer_write_length) + +#define IIO_BUFFER_ENABLE_ATTR DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, \ + iio_buffer_show_enable, \ + iio_buffer_store_enable) + +int iio_sw_buffer_preenable(struct iio_dev *indio_dev); + +#else /* CONFIG_IIO_BUFFER */ + +static inline int iio_buffer_register(struct iio_dev *indio_dev, + struct iio_chan_spec *channels, + int num_channels) +{ + return 0; +} + +static inline void iio_buffer_unregister(struct iio_dev *indio_dev) +{}; + +#endif /* CONFIG_IIO_BUFFER */ + +#endif /* _IIO_BUFFER_GENERIC_H_ */ diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h new file mode 100644 index 000000000000..1a15e560a5a1 --- /dev/null +++ b/include/linux/iio/consumer.h @@ -0,0 +1,96 @@ +/* + * Industrial I/O in kernel consumer interface + * + * Copyright (c) 2011 Jonathan Cameron + * + * 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 _IIO_INKERN_CONSUMER_H_ +#define _IIO_INKERN_CONSUMER_H +#include <linux/iio/types.h> + +struct iio_dev; +struct iio_chan_spec; + +/** + * 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. + */ +struct iio_channel { + struct iio_dev *indio_dev; + const struct iio_chan_spec *channel; +}; + +/** + * 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 + * 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_st_channel_get(const char *name, + const char *consumer_channel); + +/** + * iio_st_channel_release() - release channels obtained via iio_st_channel_get + * @chan: The channel to be released. + */ +void iio_st_channel_release(struct iio_channel *chan); + +/** + * iio_st_channel_get_all() - get all channels associated with a client + * @name: name of 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_st_channel_get_all(const char *name); + +/** + * iio_st_channel_release_all() - reverse iio_st_get_all + * @chan: Array of channels to be released. + */ +void iio_st_channel_release_all(struct iio_channel *chan); + +/** + * iio_st_read_channel_raw() - read from a given channel + * @channel: 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. + */ +int iio_st_read_channel_raw(struct iio_channel *chan, + int *val); + +/** + * iio_st_get_channel_type() - get the type of a channel + * @channel: The channel being queried. + * @type: The type of the channel. + * + * returns the enum iio_chan_type of the channel + */ +int iio_st_get_channel_type(struct iio_channel *channel, + enum iio_chan_type *type); + +/** + * iio_st_read_channel_scale() - read the scale value for a channel + * @channel: The channel being queried. + * @val: First part of value read back. + * @val2: Second part of value read back. + * + * Note returns a description of what is in val and val2, such + * as IIO_VAL_INT_PLUS_MICRO telling us we have a value of val + * + val2/1e6 + */ +int iio_st_read_channel_scale(struct iio_channel *chan, int *val, + int *val2); + +#endif diff --git a/include/linux/iio/driver.h b/include/linux/iio/driver.h new file mode 100644 index 000000000000..a4f8b2e05af5 --- /dev/null +++ b/include/linux/iio/driver.h @@ -0,0 +1,34 @@ +/* + * Industrial I/O in kernel access map interface. + * + * Copyright (c) 2011 Jonathan Cameron + * + * 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 _IIO_INKERN_H_ +#define _IIO_INKERN_H_ + +struct iio_map; + +/** + * iio_map_array_register() - tell the core about inkernel consumers + * @indio_dev: provider device + * @map: array of mappings specifying association of channel with client + */ +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 + * @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); + +#endif diff --git a/include/linux/iio/events.h b/include/linux/iio/events.h new file mode 100644 index 000000000000..b5acbf93c5da --- /dev/null +++ b/include/linux/iio/events.h @@ -0,0 +1,105 @@ +/* The industrial I/O - event passing to userspace + * + * Copyright (c) 2008-2011 Jonathan Cameron + * + * 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 _IIO_EVENTS_H_ +#define _IIO_EVENTS_H_ + +#include <linux/ioctl.h> +#include <linux/types.h> +#include <linux/iio/types.h> + +/** + * struct iio_event_data - The actual event being pushed to userspace + * @id: event identifier + * @timestamp: best estimate of time of event occurrence (often from + * the interrupt handler) + */ +struct iio_event_data { + __u64 id; + __s64 timestamp; +}; + +#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. + * @diff: Whether the event is for an differential channel or not. + * @modifier: Modifier for the channel. Should be one of enum iio_modifier. + * @direction: Direction of the event. One of enum iio_event_direction. + * @type: Type of the event. Should be one enum iio_event_type. + * @chan: Channel number for non-differential channels. + * @chan1: First channel number for differential channels. + * @chan2: Second channel number for differential channels. + */ + +#define IIO_EVENT_CODE(chan_type, diff, modifier, direction, \ + type, chan, chan1, chan2) \ + (((u64)type << 56) | ((u64)diff << 55) | \ + ((u64)direction << 48) | ((u64)modifier << 40) | \ + ((u64)chan_type << 32) | (((u16)chan2) << 16) | ((u16)chan1) | \ + ((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. + * @number: Channel number. + * @modifier: Modifier for the channel. Should be one of enum iio_modifier. + * @type: Type of the event. Should be one enum iio_event_type. + * @direction: Direction of the event. One of enum iio_event_direction. + */ + +#define IIO_MOD_EVENT_CODE(chan_type, number, modifier, \ + type, direction) \ + IIO_EVENT_CODE(chan_type, 0, modifier, direction, type, number, 0, 0) + +/** + * IIO_UNMOD_EVENT_CODE() - create event identifier for unmodified channels + * @chan_type: Type of the channel. Should be one of enum iio_chan_type. + * @number: Channel number. + * @type: Type of the event. Should be one enum iio_event_type. + * @direction: Direction of the event. One of enum iio_event_direction. + */ + +#define IIO_UNMOD_EVENT_CODE(chan_type, number, type, direction) \ + IIO_EVENT_CODE(chan_type, 0, 0, direction, type, number, 0, 0) + +#define IIO_EVENT_CODE_EXTRACT_TYPE(mask) ((mask >> 56) & 0xFF) + +#define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0xCF) + +#define IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(mask) ((mask >> 32) & 0xFF) + +/* Event code number extraction depends on which type of event we have. + * Perhaps review this function in the future*/ +#define IIO_EVENT_CODE_EXTRACT_CHAN(mask) ((__s16)(mask & 0xFFFF)) +#define IIO_EVENT_CODE_EXTRACT_CHAN2(mask) ((__s16)(((mask) >> 16) & 0xFFFF)) + +#define IIO_EVENT_CODE_EXTRACT_MODIFIER(mask) ((mask >> 40) & 0xFF) +#define IIO_EVENT_CODE_EXTRACT_DIFF(mask) (((mask) >> 55) & 0x1) + +#endif diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h new file mode 100644 index 000000000000..3a4f6a3ab80d --- /dev/null +++ b/include/linux/iio/iio.h @@ -0,0 +1,492 @@ + +/* The industrial I/O core + * + * Copyright (c) 2008 Jonathan Cameron + * + * 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 _INDUSTRIAL_IO_H_ +#define _INDUSTRIAL_IO_H_ + +#include <linux/device.h> +#include <linux/cdev.h> +#include <linux/iio/types.h> +/* IIO TODO LIST */ +/* + * Provide means of adjusting timer accuracy. + * Currently assumes nano seconds. + */ + +enum iio_chan_info_enum { + IIO_CHAN_INFO_RAW = 0, + IIO_CHAN_INFO_PROCESSED, + IIO_CHAN_INFO_SCALE, + IIO_CHAN_INFO_OFFSET, + IIO_CHAN_INFO_CALIBSCALE, + IIO_CHAN_INFO_CALIBBIAS, + IIO_CHAN_INFO_PEAK, + IIO_CHAN_INFO_PEAK_SCALE, + IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW, + IIO_CHAN_INFO_AVERAGE_RAW, + IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY, + IIO_CHAN_INFO_SAMP_FREQ, + IIO_CHAN_INFO_FREQUENCY, + IIO_CHAN_INFO_PHASE, + IIO_CHAN_INFO_HARDWAREGAIN, +}; + +#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_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) + +enum iio_endian { + IIO_CPU, + IIO_BE, + IIO_LE, +}; + +struct iio_chan_spec; +struct iio_dev; + +/** + * struct iio_chan_spec_ext_info - Extended channel info attribute + * @name: Info attribute name + * @shared: Whether this attribute is shared between all channels. + * @read: Read callback for this info attribute, may be NULL. + * @write: Write callback for this info attribute, may be NULL. + * @private: Data private to the driver. + */ +struct iio_chan_spec_ext_info { + const char *name; + bool 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, + struct iio_chan_spec const *, const char *buf, + size_t len); + uintptr_t private; +}; + +/** + * struct iio_chan_spec - specification of a single channel + * @type: What type of measurement is the channel making. + * @channel: What number or name do we wish to assign the channel. + * @channel2: If there is a second number for a differential + * channel then this is it. If modified is set then the + * value here specifies the modifier. + * @address: Driver specific identifier. + * @scan_index: Monotonic index to give ordering in scans when read + * from a buffer. + * @scan_type: Sign: 's' or 'u' to specify signed or unsigned + * realbits: Number of valid bits of data + * storage_bits: Realbits + padding + * 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. + * @ext_info: Array of extended info attributes for this channel. + * The array is NULL terminated, the last element should + * have it's name field set to NULL. + * @extend_name: Allows labeling of channel attributes with an + * informative name. Note this has no effect codes etc, + * unlike modifiers. + * @datasheet_name: A name used in in kernel mapping of channels. It should + * correspond to the first name that the channel is referred + * to by in the datasheet (e.g. IND), or the nearest + * possible compound name (e.g. IND-INC). + * @modified: Does a modifier apply to this channel. What these are + * depends on the channel type. Modifier is set in + * channel2. Examples are IIO_MOD_X for axial sensors about + * the 'x' axis. + * @indexed: Specify the channel has a numerical index. If not, + * the value in channel will be suppressed for attribute + * but not for event codes. Typically set it to 0 when + * the index is false. + * @differential: Channel is differential. + */ +struct iio_chan_spec { + enum iio_chan_type type; + int channel; + int channel2; + unsigned long address; + int scan_index; + struct { + char sign; + u8 realbits; + u8 storagebits; + u8 shift; + enum iio_endian endianness; + } scan_type; + long info_mask; + long event_mask; + const struct iio_chan_spec_ext_info *ext_info; + const char *extend_name; + const char *datasheet_name; + unsigned modified:1; + unsigned indexed:1; + unsigned output:1; + unsigned differential:1; +}; + +#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) } + +/** + * iio_get_time_ns() - utility function to get a time stamp for events etc + **/ +static inline s64 iio_get_time_ns(void) +{ + struct timespec ts; + /* + * calls getnstimeofday. + * If hrtimers then up to ns accurate, if not microsecond. + */ + ktime_get_real_ts(&ts); + + return timespec_to_ns(&ts); +} + +/* Device operating modes */ +#define INDIO_DIRECT_MODE 0x01 +#define INDIO_BUFFER_TRIGGERED 0x02 +#define INDIO_BUFFER_HARDWARE 0x08 + +#define INDIO_ALL_BUFFER_MODES \ + (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE) + +struct iio_trigger; /* forward declaration */ +struct iio_dev; + +/** + * struct iio_info - constant information about device + * @driver_module: module structure used to ensure correct + * ownership of chrdevs etc + * @event_attrs: event control attributes + * @attrs: general purpose device attributes + * @read_raw: function to request a value 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. val and val2 will + * contain the elements making up the returned value. + * @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 + * format/precision. If not set by the driver, write_raw + * 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. + * @validate_trigger: function to validate the trigger when the + * current trigger gets changed. + **/ +struct iio_info { + struct module *driver_module; + struct attribute_group *event_attrs; + const struct attribute_group *attrs; + + int (*read_raw)(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, + int *val2, + long mask); + + int (*write_raw)(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, + int val2, + long mask); + + int (*write_raw_get_fmt)(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + long mask); + + int (*read_event_config)(struct iio_dev *indio_dev, + u64 event_code); + + int (*write_event_config)(struct iio_dev *indio_dev, + u64 event_code, + int state); + + int (*read_event_value)(struct iio_dev *indio_dev, + u64 event_code, + int *val); + int (*write_event_value)(struct iio_dev *indio_dev, + u64 event_code, + int val); + int (*validate_trigger)(struct iio_dev *indio_dev, + struct iio_trigger *trig); + int (*update_scan_mode)(struct iio_dev *indio_dev, + const unsigned long *scan_mask); + int (*debugfs_reg_access)(struct iio_dev *indio_dev, + unsigned reg, unsigned writeval, + unsigned *readval); +}; + +/** + * struct iio_buffer_setup_ops - buffer setup related callbacks + * @preenable: [DRIVER] function to run prior to marking buffer enabled + * @postenable: [DRIVER] function to run after marking buffer enabled + * @predisable: [DRIVER] function to run prior to marking buffer + * disabled + * @postdisable: [DRIVER] function to run after marking buffer disabled + */ +struct iio_buffer_setup_ops { + int (*preenable)(struct iio_dev *); + int (*postenable)(struct iio_dev *); + int (*predisable)(struct iio_dev *); + int (*postdisable)(struct iio_dev *); +}; + +/** + * struct iio_dev - industrial I/O device + * @id: [INTERN] used to identify device internally + * @modes: [DRIVER] operating modes supported by device + * @currentmode: [DRIVER] current operating mode + * @dev: [DRIVER] device structure, should be assigned a parent + * and owner + * @event_interface: [INTERN] event chrdevs associated with interrupt lines + * @buffer: [DRIVER] any buffer present + * @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux + * @mlock: [INTERN] lock used to prevent simultaneous device state + * changes + * @available_scan_masks: [DRIVER] optional array of allowed bitmasks + * @masklength: [INTERN] the length of the mask established from + * channels + * @active_scan_mask: [INTERN] union of all scan masks requested by buffers + * @scan_timestamp: [INTERN] set if any buffers have requested timestamp + * @scan_index_timestamp:[INTERN] cache of the index to the timestamp + * @trig: [INTERN] current device trigger (buffer modes) + * @pollfunc: [DRIVER] function run on trigger being received + * @channels: [DRIVER] channel specification structure table + * @num_channels: [DRIVER] number of chanels specified in @channels. + * @channel_attr_list: [INTERN] keep track of automatically created channel + * attributes + * @chan_attr_group: [INTERN] group for all attrs in base directory + * @name: [DRIVER] name of the device. + * @info: [DRIVER] callbacks and constant info from driver + * @info_exist_lock: [INTERN] lock to prevent use during removal + * @setup_ops: [DRIVER] callbacks to call before and after buffer + * enable/disable + * @chrdev: [INTERN] associated character device + * @groups: [INTERN] attribute groups + * @groupcounter: [INTERN] index of next attribute group + * @flags: [INTERN] file ops related flags including busy flag. + * @debugfs_dentry: [INTERN] device specific debugfs dentry. + * @cached_reg_addr: [INTERN] cached register address for debugfs reads. + */ +struct iio_dev { + int id; + + int modes; + int currentmode; + struct device dev; + + struct iio_event_interface *event_interface; + + struct iio_buffer *buffer; + int scan_bytes; + struct mutex mlock; + + const unsigned long *available_scan_masks; + unsigned masklength; + const unsigned long *active_scan_mask; + bool scan_timestamp; + unsigned scan_index_timestamp; + struct iio_trigger *trig; + struct iio_poll_func *pollfunc; + + struct iio_chan_spec const *channels; + int num_channels; + + struct list_head channel_attr_list; + struct attribute_group chan_attr_group; + const char *name; + const struct iio_info *info; + struct mutex info_exist_lock; + const struct iio_buffer_setup_ops *setup_ops; + struct cdev chrdev; +#define IIO_MAX_GROUPS 6 + const struct attribute_group *groups[IIO_MAX_GROUPS + 1]; + int groupcounter; + + unsigned long flags; +#if defined(CONFIG_DEBUG_FS) + struct dentry *debugfs_dentry; + unsigned cached_reg_addr; +#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 iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp); + +extern struct bus_type iio_bus_type; + +/** + * iio_device_put() - reference counted deallocation of struct device + * @dev: the iio_device containing the device + **/ +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 + * @dev: The device embedded in the IIO device + * + * Note: The device must be a IIO device, otherwise the result is undefined. + */ +static inline struct iio_dev *dev_to_iio_dev(struct device *dev) +{ + return container_of(dev, struct iio_dev, 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) +{ + return (char *)indio_dev + ALIGN(sizeof(struct iio_dev), IIO_ALIGN); +} + +static inline struct iio_dev *iio_priv_to_dev(void *priv) +{ + return (struct iio_dev *)((char *)priv - + ALIGN(sizeof(struct iio_dev), IIO_ALIGN)); +} + +/** + * iio_device_free() - free an iio_dev from a driver + * @dev: the iio_dev associated with the device + **/ +void iio_device_free(struct iio_dev *indio_dev); + +/** + * iio_buffer_enabled() - helper function to test if the buffer is enabled + * @indio_dev: IIO device info structure for device + **/ +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 + * @indio_dev: IIO device info structure for device + **/ +#if defined(CONFIG_DEBUG_FS) +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 + +#endif /* _INDUSTRIAL_IO_H_ */ diff --git a/include/linux/iio/kfifo_buf.h b/include/linux/iio/kfifo_buf.h new file mode 100644 index 000000000000..014d5a13b32b --- /dev/null +++ b/include/linux/iio/kfifo_buf.h @@ -0,0 +1,8 @@ + +#include <linux/kfifo.h> +#include <linux/iio/iio.h> +#include <linux/iio/buffer.h> + +struct iio_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev); +void iio_kfifo_free(struct iio_buffer *r); + diff --git a/include/linux/iio/machine.h b/include/linux/iio/machine.h new file mode 100644 index 000000000000..0b1f19bfdc44 --- /dev/null +++ b/include/linux/iio/machine.h @@ -0,0 +1,24 @@ +/* + * Industrial I/O in kernel access map definitions for board files. + * + * Copyright (c) 2011 Jonathan Cameron + * + * 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. + */ + +/** + * struct iio_map - description of link between consumer and device channels + * @adc_channel_label: Label used to identify the channel on the provider. + * This is matched against the datasheet_name element + * of struct iio_chan_spec. + * @consumer_dev_name: Name to uniquely identify the consumer device. + * @consumer_channel: Unique name used to idenitify the channel on the + * consumer side. + */ +struct iio_map { + const char *adc_channel_label; + const char *consumer_dev_name; + const char *consumer_channel; +}; diff --git a/include/linux/iio/sysfs.h b/include/linux/iio/sysfs.h new file mode 100644 index 000000000000..bfedb73b850e --- /dev/null +++ b/include/linux/iio/sysfs.h @@ -0,0 +1,117 @@ +/* The industrial I/O core + * + *Copyright (c) 2008 Jonathan Cameron + * + * 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. + * + * General attributes + */ + +#ifndef _INDUSTRIAL_IO_SYSFS_H_ +#define _INDUSTRIAL_IO_SYSFS_H_ + +struct iio_chan_spec; + +/** + * struct iio_dev_attr - iio specific device attribute + * @dev_attr: underlying device attribute + * @address: associated register address + * @l: list head for maintaining list of dynamically created attrs. + */ +struct iio_dev_attr { + struct device_attribute dev_attr; + u64 address; + struct list_head l; + struct iio_chan_spec const *c; +}; + +#define to_iio_dev_attr(_dev_attr) \ + container_of(_dev_attr, struct iio_dev_attr, dev_attr) + +ssize_t iio_read_const_attr(struct device *dev, + struct device_attribute *attr, + char *len); + +/** + * struct iio_const_attr - constant device specific attribute + * often used for things like available modes + * @string: attribute string + * @dev_attr: underlying device attribute + */ +struct iio_const_attr { + const char *string; + struct device_attribute dev_attr; +}; + +#define to_iio_const_attr(_dev_attr) \ + container_of(_dev_attr, struct iio_const_attr, dev_attr) + +/* Some attributes will be hard coded (device dependent) and not require an + address, in these cases pass a negative */ +#define IIO_ATTR(_name, _mode, _show, _store, _addr) \ + { .dev_attr = __ATTR(_name, _mode, _show, _store), \ + .address = _addr } + +#define IIO_DEVICE_ATTR(_name, _mode, _show, _store, _addr) \ + struct iio_dev_attr iio_dev_attr_##_name \ + = IIO_ATTR(_name, _mode, _show, _store, _addr) + +#define IIO_DEVICE_ATTR_NAMED(_vname, _name, _mode, _show, _store, _addr) \ + struct iio_dev_attr iio_dev_attr_##_vname \ + = IIO_ATTR(_name, _mode, _show, _store, _addr) + +#define IIO_CONST_ATTR(_name, _string) \ + struct iio_const_attr iio_const_attr_##_name \ + = { .string = _string, \ + .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)} + +#define IIO_CONST_ATTR_NAMED(_vname, _name, _string) \ + struct iio_const_attr iio_const_attr_##_vname \ + = { .string = _string, \ + .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 + * @_mode: sysfs file mode/permissions + * @_show: output method for the attribute + * @_store: input method for the attribute + **/ +#define IIO_DEV_ATTR_SAMP_FREQ(_mode, _show, _store) \ + IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0) + +/** + * IIO_DEV_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies + * @_show: output method for the attribute + * + * May be mode dependent on some devices + **/ +#define IIO_DEV_ATTR_SAMP_FREQ_AVAIL(_show) \ + IIO_DEVICE_ATTR(sampling_frequency_available, S_IRUGO, _show, NULL, 0) +/** + * IIO_CONST_ATTR_AVAIL_SAMP_FREQ - list available sampling frequencies + * @_string: frequency string for the attribute + * + * Constant version + **/ +#define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string) \ + IIO_CONST_ATTR(sampling_frequency_available, _string) + +#define IIO_DEV_ATTR_TEMP_RAW(_show) \ + IIO_DEVICE_ATTR(in_temp_raw, S_IRUGO, _show, NULL, 0) + +#define IIO_CONST_ATTR_TEMP_OFFSET(_string) \ + IIO_CONST_ATTR(in_temp_offset, _string) + +#define IIO_CONST_ATTR_TEMP_SCALE(_string) \ + IIO_CONST_ATTR(in_temp_scale, _string) + +#endif /* _INDUSTRIAL_IO_SYSFS_H_ */ diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h new file mode 100644 index 000000000000..a9819940a84c --- /dev/null +++ b/include/linux/iio/trigger.h @@ -0,0 +1,119 @@ +/* The industrial I/O core, trigger handling functions + * + * Copyright (c) 2008 Jonathan Cameron + * + * 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. + */ +#include <linux/irq.h> +#include <linux/module.h> + +#ifndef _IIO_TRIGGER_H_ +#define _IIO_TRIGGER_H_ + +struct iio_subirq { + bool enabled; +}; + +/** + * struct iio_trigger_ops - operations structure for an iio_trigger. + * @owner: used to monitor usage count of the trigger. + * @set_trigger_state: switch on/off the trigger on demand + * @try_reenable: function to reenable the trigger when the + * use count is zero (may be NULL) + * @validate_device: function to validate the device when the + * current trigger gets changed. + * + * This is typically static const within a driver and shared by + * instances of a given device. + **/ +struct iio_trigger_ops { + struct module *owner; + int (*set_trigger_state)(struct iio_trigger *trig, bool state); + int (*try_reenable)(struct iio_trigger *trig); + int (*validate_device)(struct iio_trigger *trig, + struct iio_dev *indio_dev); +}; + + +/** + * struct iio_trigger - industrial I/O trigger device + * + * @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 + * @subirq_chip: [INTERN] associate 'virtual' irq chip. + * @subirq_base: [INTERN] base number for irqs provided by trigger. + * @subirqs: [INTERN] information about the 'child' irqs. + * @pool: [INTERN] bitmap of irqs currently in use. + * @pool_lock: [INTERN] protection of the irq pool. + **/ +struct iio_trigger { + const struct iio_trigger_ops *ops; + int id; + const char *name; + struct device dev; + + void *private_data; + struct list_head list; + struct list_head alloc_list; + int use_count; + + struct irq_chip subirq_chip; + int subirq_base; + + struct iio_subirq subirqs[CONFIG_IIO_CONSUMERS_PER_TRIGGER]; + unsigned long pool[BITS_TO_LONGS(CONFIG_IIO_CONSUMERS_PER_TRIGGER)]; + struct mutex pool_lock; +}; + + +static inline struct iio_trigger *to_iio_trigger(struct device *d) +{ + return container_of(d, struct iio_trigger, dev); +}; + +static inline void iio_trigger_put(struct iio_trigger *trig) +{ + module_put(trig->ops->owner); + put_device(&trig->dev); +}; + +static inline void iio_trigger_get(struct iio_trigger *trig) +{ + get_device(&trig->dev); + __module_get(trig->ops->owner); +}; + +/** + * iio_trigger_register() - register a trigger with the IIO core + * @trig_info: trigger to be registered + **/ +int iio_trigger_register(struct iio_trigger *trig_info); + +/** + * iio_trigger_unregister() - unregister a trigger from the core + * @trig_info: trigger to be unregistered + **/ +void iio_trigger_unregister(struct iio_trigger *trig_info); + +/** + * iio_trigger_poll() - called on a trigger occurring + * @trig: trigger which occurred + * + * Typically called in relevant hardware interrupt handler. + **/ +void iio_trigger_poll(struct iio_trigger *trig, s64 time); +void iio_trigger_poll_chained(struct iio_trigger *trig, s64 time); + +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); + +#endif /* _IIO_TRIGGER_H_ */ diff --git a/include/linux/iio/trigger_consumer.h b/include/linux/iio/trigger_consumer.h new file mode 100644 index 000000000000..60d64b356945 --- /dev/null +++ b/include/linux/iio/trigger_consumer.h @@ -0,0 +1,52 @@ +/* The industrial I/O core, trigger consumer functions + * + * Copyright (c) 2008-2011 Jonathan Cameron + * + * 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. + */ + +/** + * struct iio_poll_func - poll function pair + * + * @indio_dev: data specific to device (passed into poll func) + * @h: the function that is actually run on trigger + * @thread: threaded interrupt part + * @type: the type of interrupt (basically if oneshot) + * @name: name used to identify the trigger consumer. + * @irq: the corresponding irq as allocated from the + * trigger pool + * @timestamp: some devices need a timestamp grabbed as soon + * as possible after the trigger - hence handler + * passes it via here. + **/ +struct iio_poll_func { + struct iio_dev *indio_dev; + irqreturn_t (*h)(int irq, void *p); + irqreturn_t (*thread)(int irq, void *p); + int type; + char *name; + int irq; + s64 timestamp; +}; + + +struct iio_poll_func +*iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p), + irqreturn_t (*thread)(int irq, void *p), + int type, + struct iio_dev *indio_dev, + const char *fmt, + ...); +void iio_dealloc_pollfunc(struct iio_poll_func *pf); +irqreturn_t iio_pollfunc_store_time(int irq, void *p); + +void iio_trigger_notify_done(struct iio_trigger *trig); + +/* + * Two functions for common case where all that happens is a pollfunc + * is attached and detached from a trigger + */ +int iio_triggered_buffer_postenable(struct iio_dev *indio_dev); +int iio_triggered_buffer_predisable(struct iio_dev *indio_dev); diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h new file mode 100644 index 000000000000..1b073b1cc7c2 --- /dev/null +++ b/include/linux/iio/types.h @@ -0,0 +1,55 @@ +/* industrial I/O data types needed both in and out of kernel + * + * Copyright (c) 2008 Jonathan Cameron + * + * 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 _IIO_TYPES_H_ +#define _IIO_TYPES_H_ + +enum iio_chan_type { + /* real channel types */ + IIO_VOLTAGE, + IIO_CURRENT, + IIO_POWER, + IIO_ACCEL, + IIO_ANGL_VEL, + IIO_MAGN, + IIO_LIGHT, + IIO_INTENSITY, + IIO_PROXIMITY, + IIO_TEMP, + IIO_INCLI, + IIO_ROT, + IIO_ANGL, + IIO_TIMESTAMP, + IIO_CAPACITANCE, + IIO_ALTVOLTAGE, +}; + +enum iio_modifier { + IIO_NO_MOD, + IIO_MOD_X, + IIO_MOD_Y, + IIO_MOD_Z, + IIO_MOD_X_AND_Y, + IIO_MOD_X_AND_Z, + IIO_MOD_Y_AND_Z, + IIO_MOD_X_AND_Y_AND_Z, + IIO_MOD_X_OR_Y, + IIO_MOD_X_OR_Z, + IIO_MOD_Y_OR_Z, + IIO_MOD_X_OR_Y_OR_Z, + IIO_MOD_LIGHT_BOTH, + IIO_MOD_LIGHT_IR, +}; + +#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 + +#endif /* _IIO_TYPES_H_ */ diff --git a/include/linux/mei.h b/include/linux/mei.h new file mode 100644 index 000000000000..bc0d8b69c49e --- /dev/null +++ b/include/linux/mei.h @@ -0,0 +1,110 @@ +/****************************************************************************** + * Intel Management Engine Interface (Intel MEI) Linux driver + * Intel MEI Interface Header + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, + * USA + * + * The full GNU General Public License is included in this distribution + * in the file called LICENSE.GPL. + * + * Contact Information: + * Intel Corporation. + * linux-mei@linux.intel.com + * http://www.intel.com + * + * BSD LICENSE + * + * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + *****************************************************************************/ + +#ifndef _LINUX_MEI_H +#define _LINUX_MEI_H + +#include <linux/uuid.h> + +/* + * This IOCTL is used to associate the current file descriptor with a + * FW Client (given by UUID). This opens a communication channel + * between a host client and a FW client. From this point every read and write + * will communicate with the associated FW client. + * Only in close() (file_operation release()) the communication between + * the clients is disconnected + * + * The IOCTL argument is a struct with a union that contains + * the input parameter and the output parameter for this IOCTL. + * + * The input parameter is UUID of the FW Client. + * The output parameter is the properties of the FW client + * (FW protocol version and max message size). + * + */ +#define IOCTL_MEI_CONNECT_CLIENT \ + _IOWR('H' , 0x01, struct mei_connect_client_data) + +/* + * Intel MEI client information struct + */ +struct mei_client { + __u32 max_msg_length; + __u8 protocol_version; + __u8 reserved[3]; +}; + +/* + * IOCTL Connect Client Data structure + */ +struct mei_connect_client_data { + union { + uuid_le in_client_uuid; + struct mei_client out_client_properties; + }; +}; + +#endif /* _LINUX_MEI_H */ diff --git a/include/linux/platform_data/at91_adc.h b/include/linux/platform_data/at91_adc.h new file mode 100644 index 000000000000..e15745b4f3a5 --- /dev/null +++ b/include/linux/platform_data/at91_adc.h @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2011 Free Electrons + * + * Licensed under the GPLv2 or later. + */ + +#ifndef _AT91_ADC_H_ +#define _AT91_ADC_H_ + +/** + * struct at91_adc_reg_desc - Various informations relative to registers + * @channel_base: Base offset for the channel data registers + * @drdy_mask: Mask of the DRDY field in the relevant registers + (Interruptions registers mostly) + * @status_register: Offset of the Interrupt Status Register + * @trigger_register: Offset of the Trigger setup register + */ +struct at91_adc_reg_desc { + u8 channel_base; + u32 drdy_mask; + u8 status_register; + u8 trigger_register; +}; + +/** + * struct at91_adc_trigger - description of triggers + * @name: name of the trigger advertised to the user + * @value: value to set in the ADC's trigger setup register + to enable the trigger + * @is_external: Does the trigger rely on an external pin? + */ +struct at91_adc_trigger { + const char *name; + u8 value; + bool is_external; +}; + +/** + * struct at91_adc_data - platform data for ADC driver + * @channels_used: channels in use on the board as a bitmask + * @num_channels: global number of channels available on the board + * @registers: Registers definition on the board + * @startup_time: startup time of the ADC in microseconds + * @trigger_list: Triggers available in the ADC + * @trigger_number: Number of triggers available in the ADC + * @use_external_triggers: does the board has external triggers availables + * @vref: Reference voltage for the ADC in millivolts + */ +struct at91_adc_data { + unsigned long channels_used; + u8 num_channels; + struct at91_adc_reg_desc *registers; + u8 startup_time; + struct at91_adc_trigger *trigger_list; + u8 trigger_number; + bool use_external_triggers; + u16 vref; +}; + +extern void __init at91_add_device_adc(struct at91_adc_data *data); +#endif diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h new file mode 100644 index 000000000000..7ed7fd4dba49 --- /dev/null +++ b/include/linux/pstore_ram.h @@ -0,0 +1,98 @@ +/* + * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com> + * Copyright (C) 2011 Kees Cook <keescook@chromium.org> + * Copyright (C) 2011 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __LINUX_PSTORE_RAM_H__ +#define __LINUX_PSTORE_RAM_H__ + +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/types.h> +#include <linux/init.h> + +struct persistent_ram_buffer; + +struct persistent_ram_descriptor { + const char *name; + phys_addr_t size; +}; + +struct persistent_ram { + phys_addr_t start; + phys_addr_t size; + + int num_descs; + struct persistent_ram_descriptor *descs; + + struct list_head node; +}; + +struct persistent_ram_zone { + phys_addr_t paddr; + size_t size; + void *vaddr; + struct persistent_ram_buffer *buffer; + size_t buffer_size; + + /* ECC correction */ + bool ecc; + char *par_buffer; + char *par_header; + struct rs_control *rs_decoder; + int corrected_bytes; + int bad_blocks; + int ecc_block_size; + int ecc_size; + int ecc_symsize; + int ecc_poly; + + char *old_log; + size_t old_log_size; +}; + +int persistent_ram_early_init(struct persistent_ram *ram); + +struct persistent_ram_zone * __init persistent_ram_new(phys_addr_t start, + size_t size, + bool ecc); +void persistent_ram_free(struct persistent_ram_zone *prz); +struct persistent_ram_zone *persistent_ram_init_ringbuffer(struct device *dev, + bool ecc); + +int persistent_ram_write(struct persistent_ram_zone *prz, const void *s, + unsigned int count); + +size_t persistent_ram_old_size(struct persistent_ram_zone *prz); +void *persistent_ram_old(struct persistent_ram_zone *prz); +void persistent_ram_free_old(struct persistent_ram_zone *prz); +ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz, + char *str, size_t len); + +/* + * Ramoops platform data + * @mem_size memory size for ramoops + * @mem_address physical memory address to contain ramoops + */ + +struct ramoops_platform_data { + unsigned long mem_size; + unsigned long mem_address; + unsigned long record_size; + int dump_oops; + bool ecc; +}; + +#endif diff --git a/include/linux/ramoops.h b/include/linux/ramoops.h deleted file mode 100644 index 484fef81cd3a..000000000000 --- a/include/linux/ramoops.h +++ /dev/null @@ -1,17 +0,0 @@ -#ifndef __RAMOOPS_H -#define __RAMOOPS_H - -/* - * Ramoops platform data - * @mem_size memory size for ramoops - * @mem_address physical memory address to contain ramoops - */ - -struct ramoops_platform_data { - unsigned long mem_size; - unsigned long mem_address; - unsigned long record_size; - int dump_oops; -}; - -#endif diff --git a/include/linux/uuid.h b/include/linux/uuid.h index 5b7efbfcee4e..f86c37bfd4a0 100644 --- a/include/linux/uuid.h +++ b/include/linux/uuid.h @@ -54,6 +54,8 @@ typedef struct { UUID_BE(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, \ 0x00, 0x00, 0x00, 0x00) +#ifdef __KERNEL__ + static inline int uuid_le_cmp(const uuid_le u1, const uuid_le u2) { return memcmp(&u1, &u2, sizeof(uuid_le)); @@ -67,4 +69,6 @@ static inline int uuid_be_cmp(const uuid_be u1, const uuid_be u2) extern void uuid_le_gen(uuid_le *u); extern void uuid_be_gen(uuid_be *u); +#endif /* __KERNEL__ */ + #endif diff --git a/include/linux/vme.h b/include/linux/vme.h new file mode 100644 index 000000000000..c9d65bf14cec --- /dev/null +++ b/include/linux/vme.h @@ -0,0 +1,174 @@ +#ifndef _VME_H_ +#define _VME_H_ + +/* Resource Type */ +enum vme_resource_type { + VME_MASTER, + VME_SLAVE, + VME_DMA, + VME_LM +}; + +/* VME Address Spaces */ +#define VME_A16 0x1 +#define VME_A24 0x2 +#define VME_A32 0x4 +#define VME_A64 0x8 +#define VME_CRCSR 0x10 +#define VME_USER1 0x20 +#define VME_USER2 0x40 +#define VME_USER3 0x80 +#define VME_USER4 0x100 + +#define VME_A16_MAX 0x10000ULL +#define VME_A24_MAX 0x1000000ULL +#define VME_A32_MAX 0x100000000ULL +#define VME_A64_MAX 0x10000000000000000ULL +#define VME_CRCSR_MAX 0x1000000ULL + + +/* VME Cycle Types */ +#define VME_SCT 0x1 +#define VME_BLT 0x2 +#define VME_MBLT 0x4 +#define VME_2eVME 0x8 +#define VME_2eSST 0x10 +#define VME_2eSSTB 0x20 + +#define VME_2eSST160 0x100 +#define VME_2eSST267 0x200 +#define VME_2eSST320 0x400 + +#define VME_SUPER 0x1000 +#define VME_USER 0x2000 +#define VME_PROG 0x4000 +#define VME_DATA 0x8000 + +/* VME Data Widths */ +#define VME_D8 0x1 +#define VME_D16 0x2 +#define VME_D32 0x4 +#define VME_D64 0x8 + +/* Arbitration Scheduling Modes */ +#define VME_R_ROBIN_MODE 0x1 +#define VME_PRIORITY_MODE 0x2 + +#define VME_DMA_PATTERN (1<<0) +#define VME_DMA_PCI (1<<1) +#define VME_DMA_VME (1<<2) + +#define VME_DMA_PATTERN_BYTE (1<<0) +#define VME_DMA_PATTERN_WORD (1<<1) +#define VME_DMA_PATTERN_INCREMENT (1<<2) + +#define VME_DMA_VME_TO_MEM (1<<0) +#define VME_DMA_MEM_TO_VME (1<<1) +#define VME_DMA_VME_TO_VME (1<<2) +#define VME_DMA_MEM_TO_MEM (1<<3) +#define VME_DMA_PATTERN_TO_VME (1<<4) +#define VME_DMA_PATTERN_TO_MEM (1<<5) + +struct vme_dma_attr { + u32 type; + void *private; +}; + +struct vme_resource { + enum vme_resource_type type; + struct list_head *entry; +}; + +extern struct bus_type vme_bus_type; + +/* VME_MAX_BRIDGES comes from the type of vme_bus_numbers */ +#define VME_MAX_BRIDGES (sizeof(unsigned int)*8) +#define VME_MAX_SLOTS 32 + +#define VME_SLOT_CURRENT -1 +#define VME_SLOT_ALL -2 + +/** + * Structure representing a VME device + * @num: The device number + * @bridge: Pointer to the bridge device this device is on + * @dev: Internal device structure + * @drv_list: List of devices (per driver) + * @bridge_list: List of devices (per bridge) + */ +struct vme_dev { + int num; + struct vme_bridge *bridge; + struct device dev; + struct list_head drv_list; + struct list_head bridge_list; +}; + +struct vme_driver { + struct list_head node; + const char *name; + int (*match)(struct vme_dev *); + int (*probe)(struct vme_dev *); + int (*remove)(struct vme_dev *); + void (*shutdown)(void); + struct device_driver driver; + struct list_head devices; +}; + +void *vme_alloc_consistent(struct vme_resource *, size_t, dma_addr_t *); +void vme_free_consistent(struct vme_resource *, size_t, void *, + dma_addr_t); + +size_t vme_get_size(struct vme_resource *); + +struct vme_resource *vme_slave_request(struct vme_dev *, u32, u32); +int vme_slave_set(struct vme_resource *, int, unsigned long long, + unsigned long long, dma_addr_t, u32, u32); +int vme_slave_get(struct vme_resource *, int *, unsigned long long *, + unsigned long long *, dma_addr_t *, u32 *, u32 *); +void vme_slave_free(struct vme_resource *); + +struct vme_resource *vme_master_request(struct vme_dev *, u32, u32, u32); +int vme_master_set(struct vme_resource *, int, unsigned long long, + unsigned long long, u32, u32, u32); +int vme_master_get(struct vme_resource *, int *, unsigned long long *, + unsigned long long *, u32 *, u32 *, u32 *); +ssize_t vme_master_read(struct vme_resource *, void *, size_t, loff_t); +ssize_t vme_master_write(struct vme_resource *, void *, size_t, loff_t); +unsigned int vme_master_rmw(struct vme_resource *, unsigned int, unsigned int, + unsigned int, loff_t); +void vme_master_free(struct vme_resource *); + +struct vme_resource *vme_dma_request(struct vme_dev *, u32); +struct vme_dma_list *vme_new_dma_list(struct vme_resource *); +struct vme_dma_attr *vme_dma_pattern_attribute(u32, u32); +struct vme_dma_attr *vme_dma_pci_attribute(dma_addr_t); +struct vme_dma_attr *vme_dma_vme_attribute(unsigned long long, u32, u32, u32); +void vme_dma_free_attribute(struct vme_dma_attr *); +int vme_dma_list_add(struct vme_dma_list *, struct vme_dma_attr *, + struct vme_dma_attr *, size_t); +int vme_dma_list_exec(struct vme_dma_list *); +int vme_dma_list_free(struct vme_dma_list *); +int vme_dma_free(struct vme_resource *); + +int vme_irq_request(struct vme_dev *, int, int, + void (*callback)(int, int, void *), void *); +void vme_irq_free(struct vme_dev *, int, int); +int vme_irq_generate(struct vme_dev *, int, int); + +struct vme_resource *vme_lm_request(struct vme_dev *); +int vme_lm_count(struct vme_resource *); +int vme_lm_set(struct vme_resource *, unsigned long long, u32, u32); +int vme_lm_get(struct vme_resource *, unsigned long long *, u32 *, u32 *); +int vme_lm_attach(struct vme_resource *, int, void (*callback)(int)); +int vme_lm_detach(struct vme_resource *, int); +void vme_lm_free(struct vme_resource *); + +int vme_slot_get(struct vme_dev *); + +int vme_register_driver(struct vme_driver *, unsigned int); +void vme_unregister_driver(struct vme_driver *); + + +#endif /* _VME_H_ */ + |