[media] rc: rename the remaining things to rc_core

The Remote Controller subsystem is meant to be used not only by Infra Red
but also for similar types of Remote Controllers. The core is not specific
to Infra Red. As such, rename:
	- ir-core.h to rc-core.h
	- IR_CORE to RC_CORE
	- namespace inside rc-core.c/rc-core.h

To be consistent with the other changes.

No functional change on this patch.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 211 insertions, 0 deletions

diff --git a/include/media/rc-core.h b/include/media/rc-core.h
new file mode 100644
index 0000000..eedb2f0
--- /dev/null
+++ b/include/media/rc-core.h
@@ -0,0 +1,211 @@
+/*
+ * 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.
+ *
+ *  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 _IR_CORE
+#define _IR_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, arg...)	if (rc_core_debug >= level) \
+	printk(KERN_DEBUG "%s: " fmt , __func__, ## arg)
+
+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_dev - represents a remote control device
+ * @dev: driver model's view of this device
+ * @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_tab: current scan/key table
+ * @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_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
+ * @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_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
+ * @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
+ */
+struct rc_dev {
+	struct device			dev;
+	const char			*input_name;
+	const char			*input_phys;
+	struct input_id			input_id;
+	char				*driver_name;
+	const char			*map_name;
+	struct ir_scancode_table	rc_tab;
+	unsigned long			devno;
+	struct ir_raw_event_ctrl	*raw;
+	struct input_dev		*input_dev;
+	enum rc_driver_type		driver_type;
+	bool				idle;
+	u64				allowed_protos;
+	u32				scanmask;
+	void				*priv;
+	spinlock_t			keylock;
+	bool				keypressed;
+	unsigned long			keyup_jiffies;
+	struct timer_list		timer_keyup;
+	u32				last_keycode;
+	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 ir_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, int *txbuf, u32 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);
+};
+
+enum raw_event_type {
+	IR_SPACE        = (1 << 0),
+	IR_PULSE        = (1 << 1),
+	IR_START_EVENT  = (1 << 2),
+	IR_STOP_EVENT   = (1 << 3),
+};
+
+#define to_rc_dev(d) container_of(d, struct rc_dev, dev)
+
+
+void ir_repeat(struct rc_dev *dev);
+void ir_keydown(struct rc_dev *dev, int scancode, u8 toggle);
+void ir_keydown_notimeout(struct rc_dev *dev, int scancode, u8 toggle);
+void ir_keyup(struct rc_dev *dev);
+u32 ir_g_keycode_from_table(struct rc_dev *dev, u32 scancode);
+
+/* From ir-raw-event.c */
+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 */
+
+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);
+
+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 /* _IR_CORE */