mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 18:14:07 +08:00
7cec72ce00
The hole point of IR_dprintk() is that, once a level is given at debug parameter, all enabled IR parsers will show their debug messages. While converting it to dynamic_printk might be a good idea, right now it just makes very hard to debug the drivers, as one needs to both pass debug=1 or debug=2 to rc-core and to use the dynamic printk to enable all the desired lines. That doesn't make sense! So, revert to the old way, as a single line is changed, and the debug parameter will now work as expected. Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
281 lines
9.2 KiB
C
281 lines
9.2 KiB
C
/*
|
|
* 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
|
|
* @devno: unique 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: 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 long devno;
|
|
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 0xFFFFFFFF /* a bit more than 4 seconds */
|
|
#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 */
|