Gecko [ paroquia-rio-de-mouro.pt ]

Name	Size	Permission	Date
blackfin	[ DIR ]	drwxr-xr-x	2021-04-17 08:01
davinci	[ DIR ]	drwxr-xr-x	2021-04-17 08:01
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v4l2-device.h	7.57 KB	-rw-r--r--	2016-01-11 00:01
v4l2-dv-timings.h	7.07 KB	-rw-r--r--	2016-01-11 00:01
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v4l2-flash-led-class.h	4.56 KB	-rw-r--r--	2016-01-11 00:01
v4l2-image-sizes.h	864 B	-rw-r--r--	2016-01-11 00:01
v4l2-ioctl.h	13.58 KB	-rw-r--r--	2016-01-11 00:01
v4l2-mediabus.h	3.94 KB	-rw-r--r--	2016-01-11 00:01
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v4l2-subdev.h	31.48 KB	-rw-r--r--	2016-01-11 00:01
videobuf-core.h	6.99 KB	-rw-r--r--	2016-01-11 00:01
videobuf-dma-contig.h	1.04 KB	-rw-r--r--	2016-01-11 00:01
videobuf-dma-sg.h	2.94 KB	-rw-r--r--	2016-01-11 00:01
videobuf-dvb.h	1.67 KB	-rw-r--r--	2016-01-11 00:01
videobuf-vmalloc.h	1.29 KB	-rw-r--r--	2016-01-11 00:01
videobuf2-core.h	23.61 KB	-rw-r--r--	2021-04-13 03:05
videobuf2-dma-contig.h	831 B	-rw-r--r--	2016-01-11 00:01
videobuf2-dma-sg.h	790 B	-rw-r--r--	2016-01-11 00:01
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videobuf2-memops.h	1.06 KB	-rw-r--r--	2016-01-11 00:01
videobuf2-v4l2.h	5.27 KB	-rw-r--r--	2016-01-11 00:01
videobuf2-vmalloc.h	509 B	-rw-r--r--	2016-01-11 00:01
wm8775.h	1.36 KB	-rw-r--r--	2016-01-11 00:01

Rename

/*
 * Remote Controller core header
 *
 * Copyright (C) 2009-2010 by Mauro Carvalho Chehab
 *
 * This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation version 2 of the License.
 *
 *  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 _RC_CORE
#define _RC_CORE

#include <linux/spinlock.h>
#include <linux/kfifo.h>
#include <linux/time.h>
#include <linux/timer.h>
#include <media/rc-map.h>

extern int rc_core_debug;
#define IR_dprintk(level, fmt, ...)				\
do {								\
	if (rc_core_debug >= level)				\
		printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__);	\
} while (0)

enum rc_driver_type {
	RC_DRIVER_SCANCODE = 0,	/* Driver or hardware generates a scancode */
	RC_DRIVER_IR_RAW,	/* Needs a Infra-Red pulse/space decoder */
};

/**
 * struct rc_scancode_filter - Filter scan codes.
 * @data:	Scancode data to match.
 * @mask:	Mask of bits of scancode to compare.
 */
struct rc_scancode_filter {
	u32 data;
	u32 mask;
};

/**
 * enum rc_filter_type - Filter type constants.
 * @RC_FILTER_NORMAL:	Filter for normal operation.
 * @RC_FILTER_WAKEUP:	Filter for waking from suspend.
 * @RC_FILTER_MAX:	Number of filter types.
 */
enum rc_filter_type {
	RC_FILTER_NORMAL = 0,
	RC_FILTER_WAKEUP,

RC_FILTER_MAX
};

/**
 * struct rc_dev - represents a remote control device
 * @dev: driver model's view of this device
 * @sysfs_groups: sysfs attribute groups
 * @input_name: name of the input child device
 * @input_phys: physical path to the input child device
 * @input_id: id of the input child device (struct input_id)
 * @driver_name: name of the hardware driver which registered this device
 * @map_name: name of the default keymap
 * @rc_map: current scan/key table
 * @lock: used to ensure we've filled in all protocol details before
 *	anyone can call show_protocols or store_protocols
 * @minor: unique minor remote control device number
 * @raw: additional data for raw pulse/space devices
 * @input_dev: the input child device used to communicate events to userspace
 * @driver_type: specifies if protocol decoding is done in hardware or software
 * @idle: used to keep track of RX state
 * @allowed_protocols: bitmask with the supported RC_BIT_* protocols
 * @enabled_protocols: bitmask with the enabled RC_BIT_* protocols
 * @allowed_wakeup_protocols: bitmask with the supported RC_BIT_* wakeup protocols
 * @enabled_wakeup_protocols: bitmask with the enabled RC_BIT_* wakeup protocols
 * @scancode_filter: scancode filter
 * @scancode_wakeup_filter: scancode wakeup filters
 * @scancode_mask: some hardware decoders are not capable of providing the full
 *	scancode to the application. As this is a hardware limit, we can't do
 *	anything with it. Yet, as the same keycode table can be used with other
 *	devices, a mask is provided to allow its usage. Drivers should generally
 *	leave this field in blank
 * @users: number of current users of the device
 * @priv: driver-specific data
 * @keylock: protects the remaining members of the struct
 * @keypressed: whether a key is currently pressed
 * @keyup_jiffies: time (in jiffies) when the current keypress should be released
 * @timer_keyup: timer for releasing a keypress
 * @last_keycode: keycode of last keypress
 * @last_protocol: protocol of last keypress
 * @last_scancode: scancode of last keypress
 * @last_toggle: toggle value of last command
 * @timeout: optional time after which device stops sending data
 * @min_timeout: minimum timeout supported by device
 * @max_timeout: maximum timeout supported by device
 * @rx_resolution : resolution (in ns) of input sampler
 * @tx_resolution: resolution (in ns) of output sampler
 * @change_protocol: allow changing the protocol used on hardware decoders
 * @change_wakeup_protocol: allow changing the protocol used for wakeup
 *	filtering
 * @open: callback to allow drivers to enable polling/irq when IR input device
 *	is opened.
 * @close: callback to allow drivers to disable polling/irq when IR input device
 *	is opened.
 * @s_tx_mask: set transmitter mask (for devices with multiple tx outputs)
 * @s_tx_carrier: set transmit carrier frequency
 * @s_tx_duty_cycle: set transmit duty cycle (0% - 100%)
 * @s_rx_carrier_range: inform driver about carrier it is expected to handle
 * @tx_ir: transmit IR
 * @s_idle: enable/disable hardware idle mode, upon which,
 *	device doesn't interrupt host until it sees IR pulses
 * @s_learning_mode: enable wide band receiver used for learning
 * @s_carrier_report: enable carrier reports
 * @s_filter: set the scancode filter
 * @s_wakeup_filter: set the wakeup scancode filter
 */
struct rc_dev {
	struct device			dev;
	const struct attribute_group	*sysfs_groups[5];
	const char			*input_name;
	const char			*input_phys;
	struct input_id			input_id;
	char				*driver_name;
	const char			*map_name;
	struct rc_map			rc_map;
	struct mutex			lock;
	unsigned int			minor;
	struct ir_raw_event_ctrl	*raw;
	struct input_dev		*input_dev;
	enum rc_driver_type		driver_type;
	bool				idle;
	u64				allowed_protocols;
	u64				enabled_protocols;
	u64				allowed_wakeup_protocols;
	u64				enabled_wakeup_protocols;
	struct rc_scancode_filter	scancode_filter;
	struct rc_scancode_filter	scancode_wakeup_filter;
	u32				scancode_mask;
	u32				users;
	void				*priv;
	spinlock_t			keylock;
	bool				keypressed;
	unsigned long			keyup_jiffies;
	struct timer_list		timer_keyup;
	u32				last_keycode;
	enum rc_type			last_protocol;
	u32				last_scancode;
	u8				last_toggle;
	u32				timeout;
	u32				min_timeout;
	u32				max_timeout;
	u32				rx_resolution;
	u32				tx_resolution;
	int				(*change_protocol)(struct rc_dev *dev, u64 *rc_type);
	int				(*change_wakeup_protocol)(struct rc_dev *dev, u64 *rc_type);
	int				(*open)(struct rc_dev *dev);
	void				(*close)(struct rc_dev *dev);
	int				(*s_tx_mask)(struct rc_dev *dev, u32 mask);
	int				(*s_tx_carrier)(struct rc_dev *dev, u32 carrier);
	int				(*s_tx_duty_cycle)(struct rc_dev *dev, u32 duty_cycle);
	int				(*s_rx_carrier_range)(struct rc_dev *dev, u32 min, u32 max);
	int				(*tx_ir)(struct rc_dev *dev, unsigned *txbuf, unsigned n);
	void				(*s_idle)(struct rc_dev *dev, bool enable);
	int				(*s_learning_mode)(struct rc_dev *dev, int enable);
	int				(*s_carrier_report) (struct rc_dev *dev, int enable);
	int				(*s_filter)(struct rc_dev *dev,
						    struct rc_scancode_filter *filter);
	int				(*s_wakeup_filter)(struct rc_dev *dev,
							   struct rc_scancode_filter *filter);
};

#define to_rc_dev(d) container_of(d, struct rc_dev, dev)

/*
 * From rc-main.c
 * Those functions can be used on any type of Remote Controller. They
 * basically creates an input_dev and properly reports the device as a
 * Remote Controller, at sys/class/rc.
 */

struct rc_dev *rc_allocate_device(void);
void rc_free_device(struct rc_dev *dev);
int rc_register_device(struct rc_dev *dev);
void rc_unregister_device(struct rc_dev *dev);

int rc_open(struct rc_dev *rdev);
void rc_close(struct rc_dev *rdev);

void rc_repeat(struct rc_dev *dev);
void rc_keydown(struct rc_dev *dev, enum rc_type protocol, u32 scancode, u8 toggle);
void rc_keydown_notimeout(struct rc_dev *dev, enum rc_type protocol, u32 scancode, u8 toggle);
void rc_keyup(struct rc_dev *dev);
u32 rc_g_keycode_from_table(struct rc_dev *dev, u32 scancode);

/*
 * From rc-raw.c
 * The Raw interface is specific to InfraRed. It may be a good idea to
 * split it later into a separate header.
 */

enum raw_event_type {
	IR_SPACE        = (1 << 0),
	IR_PULSE        = (1 << 1),
	IR_START_EVENT  = (1 << 2),
	IR_STOP_EVENT   = (1 << 3),
};

struct ir_raw_event {
	union {
		u32             duration;

struct {
			u32     carrier;
			u8      duty_cycle;
		};
	};

unsigned                pulse:1;
	unsigned                reset:1;
	unsigned                timeout:1;
	unsigned                carrier_report:1;
};

#define DEFINE_IR_RAW_EVENT(event) \
	struct ir_raw_event event = { \
		{ .duration = 0 } , \
		.pulse = 0, \
		.reset = 0, \
		.timeout = 0, \
		.carrier_report = 0 }

static inline void init_ir_raw_event(struct ir_raw_event *ev)
{
	memset(ev, 0, sizeof(*ev));
}

#define IR_MAX_DURATION         500000000	/* 500 ms */
#define US_TO_NS(usec)		((usec) * 1000)
#define MS_TO_US(msec)		((msec) * 1000)
#define MS_TO_NS(msec)		((msec) * 1000 * 1000)

void ir_raw_event_handle(struct rc_dev *dev);
int ir_raw_event_store(struct rc_dev *dev, struct ir_raw_event *ev);
int ir_raw_event_store_edge(struct rc_dev *dev, enum raw_event_type type);
int ir_raw_event_store_with_filter(struct rc_dev *dev,
				struct ir_raw_event *ev);
void ir_raw_event_set_idle(struct rc_dev *dev, bool idle);

static inline void ir_raw_event_reset(struct rc_dev *dev)
{
	DEFINE_IR_RAW_EVENT(ev);
	ev.reset = true;

ir_raw_event_store(dev, &ev);
	ir_raw_event_handle(dev);
}

/* extract mask bits out of data and pack them into the result */
static inline u32 ir_extract_bits(u32 data, u32 mask)
{
	u32 vbit = 1, value = 0;

do {
		if (mask & 1) {
			if (data & 1)
				value |= vbit;
			vbit <<= 1;
		}
		data >>= 1;
	} while (mask >>= 1);

return value;
}

#endif /* _RC_CORE */