/*
* Remote Controller core header
*
+ * Copyright (C) 2009-2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
+ *
* 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.
#ifndef _IR_CORE
#define _IR_CORE
-#include <linux/input.h>
#include <linux/spinlock.h>
#include <linux/kfifo.h>
#include <linux/time.h>
+#include <linux/timer.h>
+#include <media/rc-map.h>
extern int ir_core_debug;
#define IR_dprintk(level, fmt, arg...) if (ir_core_debug >= level) \
printk(KERN_DEBUG "%s: " fmt , __func__, ## arg)
-#define IR_TYPE_UNKNOWN 0
-#define IR_TYPE_RC5 (1 << 0) /* Philips RC5 protocol */
-#define IR_TYPE_PD (1 << 1) /* Pulse distance encoded IR */
-#define IR_TYPE_NEC (1 << 2)
-#define IR_TYPE_OTHER (((u64)1) << 63l)
+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 */
+};
enum raw_event_type {
IR_SPACE = (1 << 0),
IR_STOP_EVENT = (1 << 3),
};
-struct ir_scancode {
- u16 scancode;
- u32 keycode;
-};
-
-struct ir_scancode_table {
- struct ir_scancode *scan;
- int size;
- u64 ir_type;
- char *name;
- spinlock_t lock;
-};
-
+/**
+ * struct ir_dev_props - Allow caller drivers to set special properties
+ * @driver_type: specifies if the driver or hardware have already a decoder,
+ * or if it needs to use the IR raw event decoders to produce a scancode
+ * @allowed_protos: bitmask with the supported IR_TYPE_* protocols
+ * @scanmask: 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
+ * @priv: driver-specific data, to be used on the callbacks
+ * @change_protocol: allow changing the protocol used on hardware decoders
+ * @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.
+ */
struct ir_dev_props {
- unsigned long allowed_protos;
- void *priv;
- int (*change_protocol)(void *priv, u64 ir_type);
-};
-
-struct ir_raw_event {
- struct timespec delta; /* Time spent before event */
- enum raw_event_type type; /* event type */
+ enum rc_driver_type driver_type;
+ unsigned long allowed_protos;
+ u32 scanmask;
+ void *priv;
+ int (*change_protocol)(void *priv, u64 ir_type);
+ int (*open)(void *priv);
+ void (*close)(void *priv);
};
struct ir_raw_event_ctrl {
- struct kfifo kfifo; /* fifo for the pulse/space events */
- struct timespec last_event; /* when last event occurred */
+ struct work_struct rx_work; /* for the rx decoding workqueue */
+ struct kfifo kfifo; /* fifo for the pulse/space durations */
+ ktime_t last_event; /* when last event occurred */
+ enum raw_event_type last_type; /* last event type */
+ struct input_dev *input_dev; /* pointer to the parent input_dev */
};
struct ir_input_dev {
unsigned long devno; /* device number */
const struct ir_dev_props *props; /* Device properties */
struct ir_raw_event_ctrl *raw; /* for raw pulse/space events */
+ struct input_dev *input_dev; /* the input device associated with this device */
/* key info - needed by IR keycode handlers */
- u32 keycode; /* linux key code */
- int keypressed; /* current state */
+ spinlock_t keylock; /* protects the below members */
+ bool keypressed; /* current state */
+ unsigned long keyup_jiffies; /* when should the current keypress be released? */
+ struct timer_list timer_keyup; /* timer for releasing a keypress */
+ u32 last_keycode; /* keycode of last command */
+ u32 last_scancode; /* scancode of last command */
+ u8 last_toggle; /* toggle of last command */
+};
+
+struct ir_raw_handler {
+ struct list_head list;
+
+ int (*decode)(struct input_dev *input_dev, s64 duration);
+ int (*raw_register)(struct input_dev *input_dev);
+ int (*raw_unregister)(struct input_dev *input_dev);
};
#define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
u32 ir_g_keycode_from_table(struct input_dev *input_dev,
u32 scancode);
-void ir_keyup(struct input_dev *dev);
-void ir_keydown(struct input_dev *dev, int scancode);
-int ir_input_register(struct input_dev *dev,
+void ir_repeat(struct input_dev *dev);
+void ir_keydown(struct input_dev *dev, int scancode, u8 toggle);
+int __ir_input_register(struct input_dev *dev,
const struct ir_scancode_table *ir_codes,
const struct ir_dev_props *props,
const char *driver_name);
+
+static inline int ir_input_register(struct input_dev *dev,
+ const char *map_name,
+ const struct ir_dev_props *props,
+ const char *driver_name) {
+ struct ir_scancode_table *ir_codes;
+ struct ir_input_dev *ir_dev;
+ int rc;
+
+ if (!map_name)
+ return -EINVAL;
+
+ ir_codes = get_rc_map(map_name);
+ if (!ir_codes)
+ return -EINVAL;
+
+ rc = __ir_input_register(dev, ir_codes, props, driver_name);
+ if (rc < 0)
+ return -EINVAL;
+
+ ir_dev = input_get_drvdata(dev);
+
+ if (!rc && ir_dev->props && ir_dev->props->change_protocol)
+ rc = ir_dev->props->change_protocol(ir_dev->props->priv,
+ ir_codes->ir_type);
+
+ return rc;
+}
+
void ir_input_unregister(struct input_dev *input_dev);
/* Routines from ir-sysfs.c */
/* Routines from ir-raw-event.c */
int ir_raw_event_register(struct input_dev *input_dev);
void ir_raw_event_unregister(struct input_dev *input_dev);
-int ir_raw_event_store(struct input_dev *input_dev, enum raw_event_type type);
-int ir_raw_event_handle(struct input_dev *input_dev);
+void ir_raw_event_handle(struct input_dev *input_dev);
+int ir_raw_event_store(struct input_dev *input_dev, s64 duration);
+int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type);
+static inline void ir_raw_event_reset(struct input_dev *input_dev)
+{
+ ir_raw_event_store(input_dev, 0);
+ ir_raw_event_handle(input_dev);
+}
+int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler);
+void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler);
+void ir_raw_init(void);
/* from ir-nec-decoder.c */
-int ir_nec_decode(struct input_dev *input_dev,
- struct ir_raw_event *evs,
- int len);
-
+#ifdef CONFIG_IR_NEC_DECODER_MODULE
+#define load_nec_decode() request_module("ir-nec-decoder")
+#else
+#define load_nec_decode() 0
+#endif
+/* from ir-rc5-decoder.c */
+#ifdef CONFIG_IR_RC5_DECODER_MODULE
+#define load_rc5_decode() request_module("ir-rc5-decoder")
+#else
+#define load_rc5_decode() 0
#endif
+
+/* macros for ir decoders */
+#define PULSE(units) ((units))
+#define SPACE(units) (-(units))
+#define IS_RESET(duration) ((duration) == 0)
+#define IS_PULSE(duration) ((duration) > 0)
+#define IS_SPACE(duration) ((duration) < 0)
+#define DURATION(duration) (abs((duration)))
+#define IS_TRANSITION(x, y) ((x) * (y) < 0)
+#define DECREASE_DURATION(duration, amount) \
+ do { \
+ if (IS_SPACE(duration)) \
+ duration += (amount); \
+ else if (IS_PULSE(duration)) \
+ duration -= (amount); \
+ } while (0)
+
+#define TO_UNITS(duration, unit_len) \
+ ((int)((duration) > 0 ? \
+ DIV_ROUND_CLOSEST(abs((duration)), (unit_len)) :\
+ -DIV_ROUND_CLOSEST(abs((duration)), (unit_len))))
+#define TO_US(duration) ((int)TO_UNITS(duration, 1000))
+
+#endif /* _IR_CORE */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff