Re: [PATCH 1/5] rc-code: merge and rename ir-core

Re: [PATCH 1/5] rc-code: merge and rename ir-core

[Andy Walls]

Tag files and a decent editor are all one needs for full code navigation.  The kernel makefile already has a tags target to make the tags file.  

Smaller files make for better logical isolation of functions, limiting visibilty/scope, and faster compilation of a file (but maybe at the expense of link time).  That sort of isolation of functionality into smaller files also makes the code more digestable for someone new looking at it, IMO. 

Large files are good for a pile of stuff no one ever needs to look at again: well tested code that has an expected low rate of change in the future.

Regards,
Andy


Jarod Wilson <jarod@redhat.com> wrote:

>On Wed, Sep 08, 2010 at 10:42:10AM -0300, Mauro Carvalho Chehab wrote:
>> Em 07-09-2010 18:51, David Härdeman escreveu:
>> > This patch merges the files which makes up ir-core and renames the
>> > resulting module to rc-core. IMHO this makes it much easier to hack
>> > on the core module since all code is in one file.
>> > 
>> > This also allows some simplification of ir-core-priv.h as fewer internal
>> > functions need to be exposed.
>> 
>> I'm not sure about this patch. Big files tend to be harder to maintain,
>> as it takes more time to find the right functions inside it. Also, IMO, 
>> it makes sense to keep the raw-event code on a separate file.
>
>There's definitely a balance to be struck between file size and file
>count. Having all the relevant code in one file definitely has its
>advantage in that its easier to jump around from function to function and
>trace code paths taken, but I can see the argument for isolating the raw
>event handling code a bit too, especially if its going to be further
>expanded, which I believe is likely the case. So I guess I'm on the
>fence here. :)
>
>> Anyway, if we apply this patch right now, it will cause merge conflicts with
>> the input tree, due to the get/setkeycodebig patches, and with some other
>> patches that are pending merge/review. The better is to apply such patch
>> just after the release of 2.6.37-rc1, after having all those conflicts
>> solved.
>
>The imon patch that moves mouse/panel/knob input to its own input device
>should be possible to take in advance of everything else, more or less,
>though I need to finish actually testing it out (and should probably make
>some further imon fixes for issues listed in a kernel.org bugzilla, the
>number of which escapes me at the moment).
>
>-- 
>Jarod Wilson
>jarod@redhat.com
>
>--
>To unsubscribe from this list: send the line "unsubscribe linux-media" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH 1/5] rc-code: merge and rename ir-core

[David Härdeman]

On Wed, Sep 08, 2010 at 11:10:40AM -0400, Andy Walls wrote:
> Tag files and a decent editor are all one needs for full code 
> navigation.  The kernel makefile already has a tags target to make the 
> tags file.  

If you like to use tags, it won't be affected by many or few files so 
it's not an argument for either approach. 

> Smaller files make for better logical isolation of functions,limiting 
> visibilty/scope, 

Limiting visibility so that you'll have to add explicit declarations to 
ir-core-priv.h for inter-file function calls and functions that would 
otherwise be unnecessary (ir_raw_get_allowed_protocols() for example) 
doesn't sound like an advantage to me.

> and faster compilation of a file (but maybe at the expense of link 
> time).  

*sigh* compile times on my laptop:

rc-core.o		0.558s

ir-functions.o		0.321s
ir-sysfs.o		0.251s
ir-raw-event.o		0.397s
rc-map.o		0.265s

> That sort of isolation of functionality into smaller files also makes 
> the code more digestable for someone new looking at it, IMO. 

First of all, I personally find it much easier to grok a new subsystem 
if the relevant parts are gathered into one file, both when I'm new to a 
subsystem and when I'm used to it. drivers/input/input.c and 
drivers/input/evdev.c come to mind as good examples.

But more importantly, how about focusing on the people actually writing 
patches for ir-core rather than hypotetical people?

-- 
David Härdeman

Re: [PATCH 1/5] rc-code: merge and rename ir-core

[Maxim Levitsky]

On Wed, 2010-09-08 at 23:12 +0200, David Härdeman wrote: 
> On Wed, Sep 08, 2010 at 11:10:40AM -0400, Andy Walls wrote:
> > Tag files and a decent editor are all one needs for full code 
> > navigation.  The kernel makefile already has a tags target to make the 
> > tags file.  
> 
> If you like to use tags, it won't be affected by many or few files so 
> it's not an argument for either approach. 
> 
> > Smaller files make for better logical isolation of functions,limiting 
> > visibilty/scope, 
> 
> Limiting visibility so that you'll have to add explicit declarations to 
> ir-core-priv.h for inter-file function calls and functions that would 
> otherwise be unnecessary (ir_raw_get_allowed_protocols() for example) 
> doesn't sound like an advantage to me.
> 
> > and faster compilation of a file (but maybe at the expense of link 
> > time).  
> 
> *sigh* compile times on my laptop:
> 
> rc-core.o		0.558s
> 
> ir-functions.o		0.321s
> ir-sysfs.o		0.251s
> ir-raw-event.o		0.397s
> rc-map.o		0.265s

I personally don't care much about this.
I use Kscope all the time :-)

However I do care and like very much this patchset because I also would
like to have a per remote input device, and this is first step towards
it.

Best regards,
Maxim Levitsky

Re: [PATCH 1/5] rc-code: merge and rename ir-core

[Jarod Wilson]

On Wed, Sep 8, 2010 at 5:42 PM, David Härdeman <david@hardeman.nu> wrote:
> On Wed, Sep 08, 2010 at 10:42:10AM -0300, Mauro Carvalho Chehab wrote:
>> Em 07-09-2010 18:51, David Härdeman escreveu:
>> > This patch merges the files which makes up ir-core and renames the
>> > resulting module to rc-core. IMHO this makes it much easier to hack
>> > on the core module since all code is in one file.
>> >
>> > This also allows some simplification of ir-core-priv.h as fewer internal
>> > functions need to be exposed.
>>
>> I'm not sure about this patch. Big files tend to be harder to maintain,
>> as it takes more time to find the right functions inside it. Also, IMO,
>> it makes sense to keep the raw-event code on a separate file.
>
> I don't find "big" files difficult (note: we're talking about 1300 lines
> here).  Rather the opposite, no hesitation about which files a given
> function originates from and all related code in one nice file. evdev.c
> and input.c are good precedents. But of course, it all boils down to a
> matter of personal taste.

I think I have to finally admit that my personal taste tends toward
one "big" file in this particular case.

>> Anyway, if we apply this patch right now, it will cause merge conflicts with
>> the input tree, due to the get/setkeycodebig patches, and with some other
>> patches that are pending merge/review. The better is to apply such patch
>> just after the release of 2.6.37-rc1, after having all those conflicts
>> solved.
>
> I agree that the big scancode patches from the input tree should go
> first. I keep updating my patchset as the media_tree (staging/v2.6.37
> branch) changes so I have no problem sending an updated patchset at a
> suitable time in the future.

Please feel free to add this to the subsequent refreshes:

Acked-by: Jarod Wilson <jarod@redhat.com>

-- 
Jarod Wilson
jarod@wilsonet.com

Re: [PATCH 1/5] rc-code: merge and rename ir-core

[David Härdeman]

On Wed, Sep 08, 2010 at 10:42:10AM -0300, Mauro Carvalho Chehab wrote:
> Em 07-09-2010 18:51, David Härdeman escreveu:
> > This patch merges the files which makes up ir-core and renames the
> > resulting module to rc-core. IMHO this makes it much easier to hack
> > on the core module since all code is in one file.
> > 
> > This also allows some simplification of ir-core-priv.h as fewer internal
> > functions need to be exposed.
> 
> I'm not sure about this patch. Big files tend to be harder to maintain,
> as it takes more time to find the right functions inside it. Also, IMO, 
> it makes sense to keep the raw-event code on a separate file.

I don't find "big" files difficult (note: we're talking about 1300 lines 
here).  Rather the opposite, no hesitation about which files a given 
function originates from and all related code in one nice file. evdev.c 
and input.c are good precedents. But of course, it all boils down to a 
matter of personal taste.

> Anyway, if we apply this patch right now, it will cause merge conflicts with
> the input tree, due to the get/setkeycodebig patches, and with some other
> patches that are pending merge/review. The better is to apply such patch
> just after the release of 2.6.37-rc1, after having all those conflicts
> solved.

I agree that the big scancode patches from the input tree should go 
first. I keep updating my patchset as the media_tree (staging/v2.6.37 
branch) changes so I have no problem sending an updated patchset at a 
suitable time in the future.

-- 
David Härdeman

Re: [PATCH 1/5] rc-code: merge and rename ir-core

[Jarod Wilson]

On Wed, Sep 08, 2010 at 10:42:10AM -0300, Mauro Carvalho Chehab wrote:
> Em 07-09-2010 18:51, David Härdeman escreveu:
> > This patch merges the files which makes up ir-core and renames the
> > resulting module to rc-core. IMHO this makes it much easier to hack
> > on the core module since all code is in one file.
> > 
> > This also allows some simplification of ir-core-priv.h as fewer internal
> > functions need to be exposed.
> 
> I'm not sure about this patch. Big files tend to be harder to maintain,
> as it takes more time to find the right functions inside it. Also, IMO, 
> it makes sense to keep the raw-event code on a separate file.

There's definitely a balance to be struck between file size and file
count. Having all the relevant code in one file definitely has its
advantage in that its easier to jump around from function to function and
trace code paths taken, but I can see the argument for isolating the raw
event handling code a bit too, especially if its going to be further
expanded, which I believe is likely the case. So I guess I'm on the
fence here. :)

> Anyway, if we apply this patch right now, it will cause merge conflicts with
> the input tree, due to the get/setkeycodebig patches, and with some other
> patches that are pending merge/review. The better is to apply such patch
> just after the release of 2.6.37-rc1, after having all those conflicts
> solved.

The imon patch that moves mouse/panel/knob input to its own input device
should be possible to take in advance of everything else, more or less,
though I need to finish actually testing it out (and should probably make
some further imon fixes for issues listed in a kernel.org bugzilla, the
number of which escapes me at the moment).

-- 
Jarod Wilson
jarod@redhat.com

Re: [PATCH 1/5] rc-code: merge and rename ir-core

[Mauro Carvalho Chehab]

Em 07-09-2010 18:51, David Härdeman escreveu:
> This patch merges the files which makes up ir-core and renames the
> resulting module to rc-core. IMHO this makes it much easier to hack
> on the core module since all code is in one file.
> 
> This also allows some simplification of ir-core-priv.h as fewer internal
> functions need to be exposed.

I'm not sure about this patch. Big files tend to be harder to maintain,
as it takes more time to find the right functions inside it. Also, IMO, 
it makes sense to keep the raw-event code on a separate file.

Anyway, if we apply this patch right now, it will cause merge conflicts with
the input tree, due to the get/setkeycodebig patches, and with some other
patches that are pending merge/review. The better is to apply such patch
just after the release of 2.6.37-rc1, after having all those conflicts
solved.

Cheers,
Mauro

[PATCH 1/5] rc-code: merge and rename ir-core

[David Härdeman]

This patch merges the files which makes up ir-core and renames the
resulting module to rc-core. IMHO this makes it much easier to hack
on the core module since all code is in one file.

This also allows some simplification of ir-core-priv.h as fewer internal
functions need to be exposed.

Signed-off-by: David Härdeman <david@hardeman.nu>
---
 drivers/media/IR/Makefile       |    3 
 drivers/media/IR/ir-core-priv.h |   16 
 drivers/media/IR/ir-keytable.c  |  565 ----------------
 drivers/media/IR/ir-raw-event.c |  379 -----------
 drivers/media/IR/ir-sysfs.c     |  341 ----------
 drivers/media/IR/rc-core.c      | 1338 +++++++++++++++++++++++++++++++++++++++
 drivers/media/IR/rc-map.c       |  107 ---
 include/media/ir-core.h         |    3 
 8 files changed, 1339 insertions(+), 1413 deletions(-)
 delete mode 100644 drivers/media/IR/ir-keytable.c
 delete mode 100644 drivers/media/IR/ir-raw-event.c
 delete mode 100644 drivers/media/IR/ir-sysfs.c
 create mode 100644 drivers/media/IR/rc-core.c
 delete mode 100644 drivers/media/IR/rc-map.c

diff --git a/drivers/media/IR/Makefile b/drivers/media/IR/Makefile
index 953c6c4..3aded04 100644
--- a/drivers/media/IR/Makefile
+++ b/drivers/media/IR/Makefile
@@ -1,9 +1,8 @@
 ir-common-objs  := ir-functions.o
-ir-core-objs	:= ir-keytable.o ir-sysfs.o ir-raw-event.o rc-map.o
 
 obj-y += keymaps/
 
-obj-$(CONFIG_IR_CORE) += ir-core.o
+obj-$(CONFIG_IR_CORE) += rc-core.o
 obj-$(CONFIG_VIDEO_IR) += ir-common.o
 obj-$(CONFIG_LIRC) += lirc_dev.o
 obj-$(CONFIG_IR_NEC_DECODER) += ir-nec-decoder.o
diff --git a/drivers/media/IR/ir-core-priv.h b/drivers/media/IR/ir-core-priv.h
index 0ad8ea3..c1b1a25 100644
--- a/drivers/media/IR/ir-core-priv.h
+++ b/drivers/media/IR/ir-core-priv.h
@@ -116,26 +116,10 @@ static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration)
 #define TO_US(duration)			DIV_ROUND_CLOSEST((duration), 1000)
 #define TO_STR(is_pulse)		((is_pulse) ? "pulse" : "space")
 #define IS_RESET(ev)			(ev.duration == 0)
-/*
- * Routines from ir-sysfs.c - Meant to be called only internally inside
- * ir-core
- */
-
-int ir_register_class(struct input_dev *input_dev);
-void ir_unregister_class(struct input_dev *input_dev);
 
-/*
- * Routines from ir-raw-event.c to be used internally and by decoders
- */
-u64 ir_raw_get_allowed_protocols(void);
-int ir_raw_event_register(struct input_dev *input_dev);
-void ir_raw_event_unregister(struct input_dev *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);
 
-int ir_rcmap_init(void);
-void ir_rcmap_cleanup(void);
 /*
  * Decoder initialization code
  *
diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
deleted file mode 100644
index 7e82a9d..0000000
--- a/drivers/media/IR/ir-keytable.c
+++ /dev/null
@@ -1,565 +0,0 @@
-/* ir-keytable.c - handle IR scancode->keycode tables
- *
- * Copyright (C) 2009 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.
- */
-
-
-#include <linux/input.h>
-#include <linux/slab.h>
-#include "ir-core-priv.h"
-
-/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
-#define IR_TAB_MIN_SIZE	256
-#define IR_TAB_MAX_SIZE	8192
-
-/* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */
-#define IR_KEYPRESS_TIMEOUT 250
-
-/**
- * ir_resize_table() - resizes a scancode table if necessary
- * @rc_tab:	the ir_scancode_table to resize
- * @return:	zero on success or a negative error code
- *
- * This routine will shrink the ir_scancode_table if it has lots of
- * unused entries and grow it if it is full.
- */
-static int ir_resize_table(struct ir_scancode_table *rc_tab)
-{
-	unsigned int oldalloc = rc_tab->alloc;
-	unsigned int newalloc = oldalloc;
-	struct ir_scancode *oldscan = rc_tab->scan;
-	struct ir_scancode *newscan;
-
-	if (rc_tab->size == rc_tab->len) {
-		/* All entries in use -> grow keytable */
-		if (rc_tab->alloc >= IR_TAB_MAX_SIZE)
-			return -ENOMEM;
-
-		newalloc *= 2;
-		IR_dprintk(1, "Growing table to %u bytes\n", newalloc);
-	}
-
-	if ((rc_tab->len * 3 < rc_tab->size) && (oldalloc > IR_TAB_MIN_SIZE)) {
-		/* Less than 1/3 of entries in use -> shrink keytable */
-		newalloc /= 2;
-		IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc);
-	}
-
-	if (newalloc == oldalloc)
-		return 0;
-
-	newscan = kmalloc(newalloc, GFP_ATOMIC);
-	if (!newscan) {
-		IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc);
-		return -ENOMEM;
-	}
-
-	memcpy(newscan, rc_tab->scan, rc_tab->len * sizeof(struct ir_scancode));
-	rc_tab->scan = newscan;
-	rc_tab->alloc = newalloc;
-	rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode);
-	kfree(oldscan);
-	return 0;
-}
-
-/**
- * ir_do_setkeycode() - internal function to set a keycode in the
- *			scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @rc_tab:	the struct ir_scancode_table to set the keycode in
- * @scancode:	the scancode for the ir command
- * @keycode:	the keycode for the ir command
- * @resize:	whether the keytable may be shrunk
- * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
- *
- * This routine is used internally to manipulate the scancode->keycode table.
- * The caller has to hold @rc_tab->lock.
- */
-static int ir_do_setkeycode(struct input_dev *dev,
-			    struct ir_scancode_table *rc_tab,
-			    unsigned scancode, unsigned keycode,
-			    bool resize)
-{
-	unsigned int i;
-	int old_keycode = KEY_RESERVED;
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-
-	/*
-	 * Unfortunately, some hardware-based IR decoders don't provide
-	 * all bits for the complete IR code. In general, they provide only
-	 * the command part of the IR code. Yet, as it is possible to replace
-	 * the provided IR with another one, it is needed to allow loading
-	 * IR tables from other remotes. So,
-	 */
-	if (ir_dev->props && ir_dev->props->scanmask) {
-		scancode &= ir_dev->props->scanmask;
-	}
-
-	/* First check if we already have a mapping for this ir command */
-	for (i = 0; i < rc_tab->len; i++) {
-		/* Keytable is sorted from lowest to highest scancode */
-		if (rc_tab->scan[i].scancode > scancode)
-			break;
-		else if (rc_tab->scan[i].scancode < scancode)
-			continue;
-
-		old_keycode = rc_tab->scan[i].keycode;
-		rc_tab->scan[i].keycode = keycode;
-
-		/* Did the user wish to remove the mapping? */
-		if (keycode == KEY_RESERVED || keycode == KEY_UNKNOWN) {
-			IR_dprintk(1, "#%d: Deleting scan 0x%04x\n",
-				   i, scancode);
-			rc_tab->len--;
-			memmove(&rc_tab->scan[i], &rc_tab->scan[i + 1],
-				(rc_tab->len - i) * sizeof(struct ir_scancode));
-		}
-
-		/* Possibly shrink the keytable, failure is not a problem */
-		ir_resize_table(rc_tab);
-		break;
-	}
-
-	if (old_keycode == KEY_RESERVED && keycode != KEY_RESERVED) {
-		/* No previous mapping found, we might need to grow the table */
-		if (resize && ir_resize_table(rc_tab))
-			return -ENOMEM;
-
-		IR_dprintk(1, "#%d: New scan 0x%04x with key 0x%04x\n",
-			   i, scancode, keycode);
-
-		/* i is the proper index to insert our new keycode */
-		memmove(&rc_tab->scan[i + 1], &rc_tab->scan[i],
-			(rc_tab->len - i) * sizeof(struct ir_scancode));
-		rc_tab->scan[i].scancode = scancode;
-		rc_tab->scan[i].keycode = keycode;
-		rc_tab->len++;
-		set_bit(keycode, dev->keybit);
-	} else {
-		IR_dprintk(1, "#%d: Replacing scan 0x%04x with key 0x%04x\n",
-			   i, scancode, keycode);
-		/* A previous mapping was updated... */
-		clear_bit(old_keycode, dev->keybit);
-		/* ...but another scancode might use the same keycode */
-		for (i = 0; i < rc_tab->len; i++) {
-			if (rc_tab->scan[i].keycode == old_keycode) {
-				set_bit(old_keycode, dev->keybit);
-				break;
-			}
-		}
-	}
-
-	return 0;
-}
-
-/**
- * ir_setkeycode() - set a keycode in the scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @scancode:	the desired scancode
- * @keycode:	result
- * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
- *
- * This routine is used to handle evdev EVIOCSKEY ioctl.
- */
-static int ir_setkeycode(struct input_dev *dev,
-			 unsigned int scancode, unsigned int keycode)
-{
-	int rc;
-	unsigned long flags;
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
-
-	spin_lock_irqsave(&rc_tab->lock, flags);
-	rc = ir_do_setkeycode(dev, rc_tab, scancode, keycode, true);
-	spin_unlock_irqrestore(&rc_tab->lock, flags);
-	return rc;
-}
-
-/**
- * ir_setkeytable() - sets several entries in the scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @to:		the struct ir_scancode_table to copy entries to
- * @from:	the struct ir_scancode_table to copy entries from
- * @return:	-EINVAL if all keycodes could not be inserted, otherwise zero.
- *
- * This routine is used to handle table initialization.
- */
-static int ir_setkeytable(struct input_dev *dev,
-			  struct ir_scancode_table *to,
-			  const struct ir_scancode_table *from)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
-	unsigned long flags;
-	unsigned int i;
-	int rc = 0;
-
-	spin_lock_irqsave(&rc_tab->lock, flags);
-	for (i = 0; i < from->size; i++) {
-		rc = ir_do_setkeycode(dev, to, from->scan[i].scancode,
-				      from->scan[i].keycode, false);
-		if (rc)
-			break;
-	}
-	spin_unlock_irqrestore(&rc_tab->lock, flags);
-	return rc;
-}
-
-/**
- * ir_getkeycode() - get a keycode from the scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @scancode:	the desired scancode
- * @keycode:	used to return the keycode, if found, or KEY_RESERVED
- * @return:	always returns zero.
- *
- * This routine is used to handle evdev EVIOCGKEY ioctl.
- */
-static int ir_getkeycode(struct input_dev *dev,
-			 unsigned int scancode, unsigned int *keycode)
-{
-	int start, end, mid;
-	unsigned long flags;
-	int key = KEY_RESERVED;
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
-
-	spin_lock_irqsave(&rc_tab->lock, flags);
-	start = 0;
-	end = rc_tab->len - 1;
-	while (start <= end) {
-		mid = (start + end) / 2;
-		if (rc_tab->scan[mid].scancode < scancode)
-			start = mid + 1;
-		else if (rc_tab->scan[mid].scancode > scancode)
-			end = mid - 1;
-		else {
-			key = rc_tab->scan[mid].keycode;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&rc_tab->lock, flags);
-
-	if (key == KEY_RESERVED)
-		IR_dprintk(1, "unknown key for scancode 0x%04x\n",
-			   scancode);
-
-	*keycode = key;
-	return 0;
-}
-
-/**
- * ir_g_keycode_from_table() - gets the keycode that corresponds to a scancode
- * @input_dev:	the struct input_dev descriptor of the device
- * @scancode:	the scancode that we're seeking
- *
- * This routine is used by the input routines when a key is pressed at the
- * IR. The scancode is received and needs to be converted into a keycode.
- * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the
- * corresponding keycode from the table.
- */
-u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode)
-{
-	int keycode;
-
-	ir_getkeycode(dev, scancode, &keycode);
-	if (keycode != KEY_RESERVED)
-		IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n",
-			   dev->name, scancode, keycode);
-	return keycode;
-}
-EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
-
-/**
- * ir_keyup() - generates input event to cleanup a key press
- * @ir:         the struct ir_input_dev descriptor of the device
- *
- * This routine is used to signal that a key has been released on the
- * remote control. It reports a keyup input event via input_report_key().
- */
-static void ir_keyup(struct ir_input_dev *ir)
-{
-	if (!ir->keypressed)
-		return;
-
-	IR_dprintk(1, "keyup key 0x%04x\n", ir->last_keycode);
-	input_report_key(ir->input_dev, ir->last_keycode, 0);
-	input_sync(ir->input_dev);
-	ir->keypressed = false;
-}
-
-/**
- * ir_timer_keyup() - generates a keyup event after a timeout
- * @cookie:     a pointer to struct ir_input_dev passed to setup_timer()
- *
- * This routine will generate a keyup event some time after a keydown event
- * is generated when no further activity has been detected.
- */
-static void ir_timer_keyup(unsigned long cookie)
-{
-	struct ir_input_dev *ir = (struct ir_input_dev *)cookie;
-	unsigned long flags;
-
-	/*
-	 * ir->keyup_jiffies is used to prevent a race condition if a
-	 * hardware interrupt occurs at this point and the keyup timer
-	 * event is moved further into the future as a result.
-	 *
-	 * The timer will then be reactivated and this function called
-	 * again in the future. We need to exit gracefully in that case
-	 * to allow the input subsystem to do its auto-repeat magic or
-	 * a keyup event might follow immediately after the keydown.
-	 */
-	spin_lock_irqsave(&ir->keylock, flags);
-	if (time_is_after_eq_jiffies(ir->keyup_jiffies))
-		ir_keyup(ir);
-	spin_unlock_irqrestore(&ir->keylock, flags);
-}
-
-/**
- * ir_repeat() - notifies the IR core that a key is still pressed
- * @dev:        the struct input_dev descriptor of the device
- *
- * This routine is used by IR decoders when a repeat message which does
- * not include the necessary bits to reproduce the scancode has been
- * received.
- */
-void ir_repeat(struct input_dev *dev)
-{
-	unsigned long flags;
-	struct ir_input_dev *ir = input_get_drvdata(dev);
-
-	spin_lock_irqsave(&ir->keylock, flags);
-
-	input_event(dev, EV_MSC, MSC_SCAN, ir->last_scancode);
-
-	if (!ir->keypressed)
-		goto out;
-
-	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
-	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
-
-out:
-	spin_unlock_irqrestore(&ir->keylock, flags);
-}
-EXPORT_SYMBOL_GPL(ir_repeat);
-
-/**
- * ir_keydown() - generates input event for a key press
- * @dev:        the struct input_dev descriptor of the device
- * @scancode:   the scancode that we're seeking
- * @toggle:     the toggle value (protocol dependent, if the protocol doesn't
- *              support toggle values, this should be set to zero)
- *
- * This routine is used by the input routines when a key is pressed at the
- * IR. It gets the keycode for a scancode and reports an input event via
- * input_report_key().
- */
-void ir_keydown(struct input_dev *dev, int scancode, u8 toggle)
-{
-	unsigned long flags;
-	struct ir_input_dev *ir = input_get_drvdata(dev);
-
-	u32 keycode = ir_g_keycode_from_table(dev, scancode);
-
-	spin_lock_irqsave(&ir->keylock, flags);
-
-	input_event(dev, EV_MSC, MSC_SCAN, scancode);
-
-	/* Repeat event? */
-	if (ir->keypressed &&
-	    ir->last_scancode == scancode &&
-	    ir->last_toggle == toggle)
-		goto set_timer;
-
-	/* Release old keypress */
-	ir_keyup(ir);
-
-	ir->last_scancode = scancode;
-	ir->last_toggle = toggle;
-	ir->last_keycode = keycode;
-
-
-	if (keycode == KEY_RESERVED)
-		goto out;
-
-
-	/* Register a keypress */
-	ir->keypressed = true;
-	IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n",
-		   dev->name, keycode, scancode);
-	input_report_key(dev, ir->last_keycode, 1);
-	input_sync(dev);
-
-set_timer:
-	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
-	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
-out:
-	spin_unlock_irqrestore(&ir->keylock, flags);
-}
-EXPORT_SYMBOL_GPL(ir_keydown);
-
-static int ir_open(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-
-	return ir_dev->props->open(ir_dev->props->priv);
-}
-
-static void ir_close(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-
-	ir_dev->props->close(ir_dev->props->priv);
-}
-
-/**
- * __ir_input_register() - sets the IR keycode table and add the handlers
- *			    for keymap table get/set
- * @input_dev:	the struct input_dev descriptor of the device
- * @rc_tab:	the struct ir_scancode_table table of scancode/keymap
- *
- * This routine is used to initialize the input infrastructure
- * to work with an IR.
- * It will register the input/evdev interface for the device and
- * register the syfs code for IR class
- */
-int __ir_input_register(struct input_dev *input_dev,
-		      const struct ir_scancode_table *rc_tab,
-		      struct ir_dev_props *props,
-		      const char *driver_name)
-{
-	struct ir_input_dev *ir_dev;
-	int rc;
-
-	if (rc_tab->scan == NULL || !rc_tab->size)
-		return -EINVAL;
-
-	ir_dev = kzalloc(sizeof(*ir_dev), GFP_KERNEL);
-	if (!ir_dev)
-		return -ENOMEM;
-
-	ir_dev->driver_name = kasprintf(GFP_KERNEL, "%s", driver_name);
-	if (!ir_dev->driver_name) {
-		rc = -ENOMEM;
-		goto out_dev;
-	}
-
-	input_dev->getkeycode = ir_getkeycode;
-	input_dev->setkeycode = ir_setkeycode;
-	input_set_drvdata(input_dev, ir_dev);
-	ir_dev->input_dev = input_dev;
-
-	spin_lock_init(&ir_dev->rc_tab.lock);
-	spin_lock_init(&ir_dev->keylock);
-	setup_timer(&ir_dev->timer_keyup, ir_timer_keyup, (unsigned long)ir_dev);
-
-	ir_dev->rc_tab.name = rc_tab->name;
-	ir_dev->rc_tab.ir_type = rc_tab->ir_type;
-	ir_dev->rc_tab.alloc = roundup_pow_of_two(rc_tab->size *
-						  sizeof(struct ir_scancode));
-	ir_dev->rc_tab.scan = kmalloc(ir_dev->rc_tab.alloc, GFP_KERNEL);
-	ir_dev->rc_tab.size = ir_dev->rc_tab.alloc / sizeof(struct ir_scancode);
-	if (props) {
-		ir_dev->props = props;
-		if (props->open)
-			input_dev->open = ir_open;
-		if (props->close)
-			input_dev->close = ir_close;
-	}
-
-	if (!ir_dev->rc_tab.scan) {
-		rc = -ENOMEM;
-		goto out_name;
-	}
-
-	IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
-		   ir_dev->rc_tab.size, ir_dev->rc_tab.alloc);
-
-	set_bit(EV_KEY, input_dev->evbit);
-	set_bit(EV_REP, input_dev->evbit);
-	set_bit(EV_MSC, input_dev->evbit);
-	set_bit(MSC_SCAN, input_dev->mscbit);
-
-	if (ir_setkeytable(input_dev, &ir_dev->rc_tab, rc_tab)) {
-		rc = -ENOMEM;
-		goto out_table;
-	}
-
-	rc = ir_register_class(input_dev);
-	if (rc < 0)
-		goto out_table;
-
-	if (ir_dev->props)
-		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) {
-			rc = ir_raw_event_register(input_dev);
-			if (rc < 0)
-				goto out_event;
-		}
-
-	IR_dprintk(1, "Registered input device on %s for %s remote%s.\n",
-		   driver_name, rc_tab->name,
-		   (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ?
-			" in raw mode" : "");
-
-	return 0;
-
-out_event:
-	ir_unregister_class(input_dev);
-out_table:
-	kfree(ir_dev->rc_tab.scan);
-out_name:
-	kfree(ir_dev->driver_name);
-out_dev:
-	kfree(ir_dev);
-	return rc;
-}
-EXPORT_SYMBOL_GPL(__ir_input_register);
-
-/**
- * ir_input_unregister() - unregisters IR and frees resources
- * @input_dev:	the struct input_dev descriptor of the device
-
- * This routine is used to free memory and de-register interfaces.
- */
-void ir_input_unregister(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-	struct ir_scancode_table *rc_tab;
-
-	if (!ir_dev)
-		return;
-
-	IR_dprintk(1, "Freed keycode table\n");
-
-	del_timer_sync(&ir_dev->timer_keyup);
-	if (ir_dev->props)
-		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW)
-			ir_raw_event_unregister(input_dev);
-
-	rc_tab = &ir_dev->rc_tab;
-	rc_tab->size = 0;
-	kfree(rc_tab->scan);
-	rc_tab->scan = NULL;
-
-	ir_unregister_class(input_dev);
-
-	kfree(ir_dev->driver_name);
-	kfree(ir_dev);
-}
-EXPORT_SYMBOL_GPL(ir_input_unregister);
-
-int ir_core_debug;    /* ir_debug level (0,1,2) */
-EXPORT_SYMBOL_GPL(ir_core_debug);
-module_param_named(debug, ir_core_debug, int, 0644);
-
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c
deleted file mode 100644
index 8e0e1b1..0000000
--- a/drivers/media/IR/ir-raw-event.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/* ir-raw-event.c - handle IR Pulse/Space event
- *
- * Copyright (C) 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.
- */
-
-#include <linux/kthread.h>
-#include <linux/mutex.h>
-#include <linux/sched.h>
-#include <linux/freezer.h>
-#include "ir-core-priv.h"
-
-/* Define the max number of pulse/space transitions to buffer */
-#define MAX_IR_EVENT_SIZE      512
-
-/* Used to keep track of IR raw clients, protected by ir_raw_handler_lock */
-static LIST_HEAD(ir_raw_client_list);
-
-/* Used to handle IR raw handler extensions */
-static DEFINE_MUTEX(ir_raw_handler_lock);
-static LIST_HEAD(ir_raw_handler_list);
-static u64 available_protocols;
-
-#ifdef MODULE
-/* Used to load the decoders */
-static struct work_struct wq_load;
-#endif
-
-static int ir_raw_event_thread(void *data)
-{
-	struct ir_raw_event ev;
-	struct ir_raw_handler *handler;
-	struct ir_raw_event_ctrl *raw = (struct ir_raw_event_ctrl *)data;
-
-	while (!kthread_should_stop()) {
-		try_to_freeze();
-
-		mutex_lock(&ir_raw_handler_lock);
-
-		while (kfifo_out(&raw->kfifo, &ev, sizeof(ev)) == sizeof(ev)) {
-			list_for_each_entry(handler, &ir_raw_handler_list, list)
-				handler->decode(raw->input_dev, ev);
-			raw->prev_ev = ev;
-		}
-
-		mutex_unlock(&ir_raw_handler_lock);
-
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule();
-	}
-
-	return 0;
-}
-
-/**
- * ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders
- * @input_dev:	the struct input_dev device descriptor
- * @ev:		the struct ir_raw_event descriptor of the pulse/space
- *
- * This routine (which may be called from an interrupt context) stores a
- * pulse/space duration for the raw ir decoding state machines. Pulses are
- * signalled as positive values and spaces as negative values. A zero value
- * will reset the decoding state machines.
- */
-int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-
-	if (!ir->raw)
-		return -EINVAL;
-
-	IR_dprintk(2, "sample: (05%dus %s)\n",
-		TO_US(ev->duration), TO_STR(ev->pulse));
-
-	if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev))
-		return -ENOMEM;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_store);
-
-/**
- * ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space
- * @input_dev:	the struct input_dev device descriptor
- * @type:	the type of the event that has occurred
- *
- * This routine (which may be called from an interrupt context) is used to
- * store the beginning of an ir pulse or space (or the start/end of ir
- * reception) for the raw ir decoding state machines. This is used by
- * hardware which does not provide durations directly but only interrupts
- * (or similar events) on state change.
- */
-int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type)
-{
-	struct ir_input_dev	*ir = input_get_drvdata(input_dev);
-	ktime_t			now;
-	s64			delta; /* ns */
-	struct ir_raw_event	ev;
-	int			rc = 0;
-
-	if (!ir->raw)
-		return -EINVAL;
-
-	now = ktime_get();
-	delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
-
-	/* Check for a long duration since last event or if we're
-	 * being called for the first time, note that delta can't
-	 * possibly be negative.
-	 */
-	ev.duration = 0;
-	if (delta > IR_MAX_DURATION || !ir->raw->last_type)
-		type |= IR_START_EVENT;
-	else
-		ev.duration = delta;
-
-	if (type & IR_START_EVENT)
-		ir_raw_event_reset(input_dev);
-	else if (ir->raw->last_type & IR_SPACE) {
-		ev.pulse = false;
-		rc = ir_raw_event_store(input_dev, &ev);
-	} else if (ir->raw->last_type & IR_PULSE) {
-		ev.pulse = true;
-		rc = ir_raw_event_store(input_dev, &ev);
-	} else
-		return 0;
-
-	ir->raw->last_event = now;
-	ir->raw->last_type = type;
-	return rc;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
-
-/**
- * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
- * @input_dev:	the struct input_dev device descriptor
- * @type:	the type of the event that has occurred
- *
- * This routine (which may be called from an interrupt context) works
- * in similiar manner to ir_raw_event_store_edge.
- * This routine is intended for devices with limited internal buffer
- * It automerges samples of same type, and handles timeouts
- */
-int ir_raw_event_store_with_filter(struct input_dev *input_dev,
-						struct ir_raw_event *ev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	struct ir_raw_event_ctrl *raw = ir->raw;
-
-	if (!raw || !ir->props)
-		return -EINVAL;
-
-	/* Ignore spaces in idle mode */
-	if (ir->idle && !ev->pulse)
-		return 0;
-	else if (ir->idle)
-		ir_raw_event_set_idle(input_dev, 0);
-
-	if (!raw->this_ev.duration) {
-		raw->this_ev = *ev;
-	} else if (ev->pulse == raw->this_ev.pulse) {
-		raw->this_ev.duration += ev->duration;
-	} else {
-		ir_raw_event_store(input_dev, &raw->this_ev);
-		raw->this_ev = *ev;
-	}
-
-	/* Enter idle mode if nessesary */
-	if (!ev->pulse && ir->props->timeout &&
-		raw->this_ev.duration >= ir->props->timeout)
-		ir_raw_event_set_idle(input_dev, 1);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter);
-
-void ir_raw_event_set_idle(struct input_dev *input_dev, int idle)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	struct ir_raw_event_ctrl *raw = ir->raw;
-	ktime_t now;
-	u64 delta;
-
-	if (!ir->props)
-		return;
-
-	if (!ir->raw)
-		goto out;
-
-	if (idle) {
-		IR_dprintk(2, "enter idle mode\n");
-		raw->last_event = ktime_get();
-	} else {
-		IR_dprintk(2, "exit idle mode\n");
-
-		now = ktime_get();
-		delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
-
-		WARN_ON(raw->this_ev.pulse);
-
-		raw->this_ev.duration =
-			min(raw->this_ev.duration + delta,
-						(u64)IR_MAX_DURATION);
-
-		ir_raw_event_store(input_dev, &raw->this_ev);
-
-		if (raw->this_ev.duration == IR_MAX_DURATION)
-			ir_raw_event_reset(input_dev);
-
-		raw->this_ev.duration = 0;
-	}
-out:
-	if (ir->props->s_idle)
-		ir->props->s_idle(ir->props->priv, idle);
-	ir->idle = idle;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_set_idle);
-
-/**
- * ir_raw_event_handle() - schedules the decoding of stored ir data
- * @input_dev:	the struct input_dev device descriptor
- *
- * This routine will signal the workqueue to start decoding stored ir data.
- */
-void ir_raw_event_handle(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-
-	if (!ir->raw)
-		return;
-
-	wake_up_process(ir->raw->thread);
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_handle);
-
-/* used internally by the sysfs interface */
-u64
-ir_raw_get_allowed_protocols()
-{
-	u64 protocols;
-	mutex_lock(&ir_raw_handler_lock);
-	protocols = available_protocols;
-	mutex_unlock(&ir_raw_handler_lock);
-	return protocols;
-}
-
-/*
- * Used to (un)register raw event clients
- */
-int ir_raw_event_register(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	int rc;
-	struct ir_raw_handler *handler;
-
-	ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL);
-	if (!ir->raw)
-		return -ENOMEM;
-
-	ir->raw->input_dev = input_dev;
-
-	ir->raw->enabled_protocols = ~0;
-	rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE,
-			 GFP_KERNEL);
-	if (rc < 0) {
-		kfree(ir->raw);
-		ir->raw = NULL;
-		return rc;
-	}
-
-	ir->raw->thread = kthread_run(ir_raw_event_thread, ir->raw,
-			"rc%u",  (unsigned int)ir->devno);
-
-	if (IS_ERR(ir->raw->thread)) {
-		int ret = PTR_ERR(ir->raw->thread);
-
-		kfree(ir->raw);
-		ir->raw = NULL;
-		return ret;
-	}
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_add_tail(&ir->raw->list, &ir_raw_client_list);
-	list_for_each_entry(handler, &ir_raw_handler_list, list)
-		if (handler->raw_register)
-			handler->raw_register(ir->raw->input_dev);
-	mutex_unlock(&ir_raw_handler_lock);
-
-	return 0;
-}
-
-void ir_raw_event_unregister(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	struct ir_raw_handler *handler;
-
-	if (!ir->raw)
-		return;
-
-	kthread_stop(ir->raw->thread);
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_del(&ir->raw->list);
-	list_for_each_entry(handler, &ir_raw_handler_list, list)
-		if (handler->raw_unregister)
-			handler->raw_unregister(ir->raw->input_dev);
-	mutex_unlock(&ir_raw_handler_lock);
-
-	kfifo_free(&ir->raw->kfifo);
-	kfree(ir->raw);
-	ir->raw = NULL;
-}
-
-/*
- * Extension interface - used to register the IR decoders
- */
-
-int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler)
-{
-	struct ir_raw_event_ctrl *raw;
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list);
-	if (ir_raw_handler->raw_register)
-		list_for_each_entry(raw, &ir_raw_client_list, list)
-			ir_raw_handler->raw_register(raw->input_dev);
-	available_protocols |= ir_raw_handler->protocols;
-	mutex_unlock(&ir_raw_handler_lock);
-
-	return 0;
-}
-EXPORT_SYMBOL(ir_raw_handler_register);
-
-void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler)
-{
-	struct ir_raw_event_ctrl *raw;
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_del(&ir_raw_handler->list);
-	if (ir_raw_handler->raw_unregister)
-		list_for_each_entry(raw, &ir_raw_client_list, list)
-			ir_raw_handler->raw_unregister(raw->input_dev);
-	available_protocols &= ~ir_raw_handler->protocols;
-	mutex_unlock(&ir_raw_handler_lock);
-}
-EXPORT_SYMBOL(ir_raw_handler_unregister);
-
-#ifdef MODULE
-static void init_decoders(struct work_struct *work)
-{
-	/* Load the decoder modules */
-
-	load_nec_decode();
-	load_rc5_decode();
-	load_rc6_decode();
-	load_jvc_decode();
-	load_sony_decode();
-	load_lirc_codec();
-
-	/* If needed, we may later add some init code. In this case,
-	   it is needed to change the CONFIG_MODULE test at ir-core.h
-	 */
-}
-#endif
-
-void ir_raw_init(void)
-{
-#ifdef MODULE
-	INIT_WORK(&wq_load, init_decoders);
-	schedule_work(&wq_load);
-#endif
-}
diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c
deleted file mode 100644
index 72403cd..0000000
--- a/drivers/media/IR/ir-sysfs.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/* ir-sysfs.c - sysfs interface for RC devices (/sys/class/rc)
- *
- * 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.
- */
-
-#include <linux/slab.h>
-#include <linux/input.h>
-#include <linux/device.h>
-#include "ir-core-priv.h"
-
-#define IRRCV_NUM_DEVICES	256
-
-/* bit array to represent IR sysfs device number */
-static unsigned long ir_core_dev_number;
-
-/* class for /sys/class/rc */
-static char *ir_devnode(struct device *dev, mode_t *mode)
-{
-	return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
-}
-
-static struct class ir_input_class = {
-	.name		= "rc",
-	.devnode	= ir_devnode,
-};
-
-static struct {
-	u64	type;
-	char	*name;
-} proto_names[] = {
-	{ IR_TYPE_UNKNOWN,	"unknown"	},
-	{ IR_TYPE_RC5,		"rc-5"		},
-	{ IR_TYPE_NEC,		"nec"		},
-	{ IR_TYPE_RC6,		"rc-6"		},
-	{ IR_TYPE_JVC,		"jvc"		},
-	{ IR_TYPE_SONY,		"sony"		},
-	{ IR_TYPE_RC5_SZ,	"rc-5-sz"	},
-	{ IR_TYPE_LIRC,		"lirc"		},
-};
-
-#define PROTO_NONE	"none"
-
-/**
- * show_protocols() - shows the current IR protocol(s)
- * @d:		the device descriptor
- * @mattr:	the device attribute struct (unused)
- * @buf:	a pointer to the output buffer
- *
- * This routine is a callback routine for input read the IR protocol type(s).
- * it is trigged by reading /sys/class/rc/rc?/protocols.
- * It returns the protocol names of supported protocols.
- * Enabled protocols are printed in brackets.
- */
-static ssize_t show_protocols(struct device *d,
-			      struct device_attribute *mattr, char *buf)
-{
-	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
-	u64 allowed, enabled;
-	char *tmp = buf;
-	int i;
-
-	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
-		enabled = ir_dev->rc_tab.ir_type;
-		allowed = ir_dev->props->allowed_protos;
-	} else {
-		enabled = ir_dev->raw->enabled_protocols;
-		allowed = ir_raw_get_allowed_protocols();
-	}
-
-	IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n",
-		   (long long)allowed,
-		   (long long)enabled);
-
-	for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
-		if (allowed & enabled & proto_names[i].type)
-			tmp += sprintf(tmp, "[%s] ", proto_names[i].name);
-		else if (allowed & proto_names[i].type)
-			tmp += sprintf(tmp, "%s ", proto_names[i].name);
-	}
-
-	if (tmp != buf)
-		tmp--;
-	*tmp = '\n';
-	return tmp + 1 - buf;
-}
-
-/**
- * store_protocols() - changes the current IR protocol(s)
- * @d:		the device descriptor
- * @mattr:	the device attribute struct (unused)
- * @buf:	a pointer to the input buffer
- * @len:	length of the input buffer
- *
- * This routine is a callback routine for changing the IR protocol type.
- * It is trigged by writing to /sys/class/rc/rc?/protocols.
- * Writing "+proto" will add a protocol to the list of enabled protocols.
- * Writing "-proto" will remove a protocol from the list of enabled protocols.
- * Writing "proto" will enable only "proto".
- * Writing "none" will disable all protocols.
- * Returns -EINVAL if an invalid protocol combination or unknown protocol name
- * is used, otherwise @len.
- */
-static ssize_t store_protocols(struct device *d,
-			       struct device_attribute *mattr,
-			       const char *data,
-			       size_t len)
-{
-	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
-	bool enable, disable;
-	const char *tmp;
-	u64 type;
-	u64 mask;
-	int rc, i, count = 0;
-	unsigned long flags;
-
-	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE)
-		type = ir_dev->rc_tab.ir_type;
-	else
-		type = ir_dev->raw->enabled_protocols;
-
-	while ((tmp = strsep((char **) &data, " \n")) != NULL) {
-		if (!*tmp)
-			break;
-
-		if (*tmp == '+') {
-			enable = true;
-			disable = false;
-			tmp++;
-		} else if (*tmp == '-') {
-			enable = false;
-			disable = true;
-			tmp++;
-		} else {
-			enable = false;
-			disable = false;
-		}
-
-		if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) {
-			tmp += sizeof(PROTO_NONE);
-			mask = 0;
-			count++;
-		} else {
-			for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
-				if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) {
-					tmp += strlen(proto_names[i].name);
-					mask = proto_names[i].type;
-					break;
-				}
-			}
-			if (i == ARRAY_SIZE(proto_names)) {
-				IR_dprintk(1, "Unknown protocol: '%s'\n", tmp);
-				return -EINVAL;
-			}
-			count++;
-		}
-
-		if (enable)
-			type |= mask;
-		else if (disable)
-			type &= ~mask;
-		else
-			type = mask;
-	}
-
-	if (!count) {
-		IR_dprintk(1, "Protocol not specified\n");
-		return -EINVAL;
-	}
-
-	if (ir_dev->props && ir_dev->props->change_protocol) {
-		rc = ir_dev->props->change_protocol(ir_dev->props->priv,
-						    type);
-		if (rc < 0) {
-			IR_dprintk(1, "Error setting protocols to 0x%llx\n",
-				   (long long)type);
-			return -EINVAL;
-		}
-	}
-
-	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
-		spin_lock_irqsave(&ir_dev->rc_tab.lock, flags);
-		ir_dev->rc_tab.ir_type = type;
-		spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags);
-	} else {
-		ir_dev->raw->enabled_protocols = type;
-	}
-
-	IR_dprintk(1, "Current protocol(s): 0x%llx\n",
-		   (long long)type);
-
-	return len;
-}
-
-#define ADD_HOTPLUG_VAR(fmt, val...)					\
-	do {								\
-		int err = add_uevent_var(env, fmt, val);		\
-		if (err)						\
-			return err;					\
-	} while (0)
-
-static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
-{
-	struct ir_input_dev *ir_dev = dev_get_drvdata(device);
-
-	if (ir_dev->rc_tab.name)
-		ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name);
-	if (ir_dev->driver_name)
-		ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name);
-
-	return 0;
-}
-
-/*
- * Static device attribute struct with the sysfs attributes for IR's
- */
-static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
-		   show_protocols, store_protocols);
-
-static struct attribute *rc_dev_attrs[] = {
-	&dev_attr_protocols.attr,
-	NULL,
-};
-
-static struct attribute_group rc_dev_attr_grp = {
-	.attrs	= rc_dev_attrs,
-};
-
-static const struct attribute_group *rc_dev_attr_groups[] = {
-	&rc_dev_attr_grp,
-	NULL
-};
-
-static struct device_type rc_dev_type = {
-	.groups		= rc_dev_attr_groups,
-	.uevent		= rc_dev_uevent,
-};
-
-/**
- * ir_register_class() - creates the sysfs for /sys/class/rc/rc?
- * @input_dev:	the struct input_dev descriptor of the device
- *
- * This routine is used to register the syfs code for IR class
- */
-int ir_register_class(struct input_dev *input_dev)
-{
-	int rc;
-	const char *path;
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-	int devno = find_first_zero_bit(&ir_core_dev_number,
-					IRRCV_NUM_DEVICES);
-
-	if (unlikely(devno < 0))
-		return devno;
-
-	ir_dev->dev.type = &rc_dev_type;
-
-	ir_dev->dev.class = &ir_input_class;
-	ir_dev->dev.parent = input_dev->dev.parent;
-	dev_set_name(&ir_dev->dev, "rc%d", devno);
-	dev_set_drvdata(&ir_dev->dev, ir_dev);
-	rc = device_register(&ir_dev->dev);
-	if (rc)
-		return rc;
-
-
-	input_dev->dev.parent = &ir_dev->dev;
-	rc = input_register_device(input_dev);
-	if (rc < 0) {
-		device_del(&ir_dev->dev);
-		return rc;
-	}
-
-	__module_get(THIS_MODULE);
-
-	path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL);
-	printk(KERN_INFO "%s: %s as %s\n",
-		dev_name(&ir_dev->dev),
-		input_dev->name ? input_dev->name : "Unspecified device",
-		path ? path : "N/A");
-	kfree(path);
-
-	ir_dev->devno = devno;
-	set_bit(devno, &ir_core_dev_number);
-
-	return 0;
-};
-
-/**
- * ir_unregister_class() - removes the sysfs for sysfs for
- *			   /sys/class/rc/rc?
- * @input_dev:	the struct input_dev descriptor of the device
- *
- * This routine is used to unregister the syfs code for IR class
- */
-void ir_unregister_class(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-
-	clear_bit(ir_dev->devno, &ir_core_dev_number);
-	input_unregister_device(input_dev);
-	device_del(&ir_dev->dev);
-
-	module_put(THIS_MODULE);
-}
-
-/*
- * Init/exit code for the module. Basically, creates/removes /sys/class/rc
- */
-
-static int __init ir_core_init(void)
-{
-	int rc = class_register(&ir_input_class);
-	if (rc) {
-		printk(KERN_ERR "ir_core: unable to register rc class\n");
-		return rc;
-	}
-
-	/* Initialize/load the decoders/keymap code that will be used */
-	ir_raw_init();
-	ir_rcmap_init();
-
-	return 0;
-}
-
-static void __exit ir_core_exit(void)
-{
-	class_unregister(&ir_input_class);
-	ir_rcmap_cleanup();
-}
-
-module_init(ir_core_init);
-module_exit(ir_core_exit);
diff --git a/drivers/media/IR/rc-core.c b/drivers/media/IR/rc-core.c
new file mode 100644
index 0000000..3b9ef0c
--- /dev/null
+++ b/drivers/media/IR/rc-core.c
@@ -0,0 +1,1338 @@
+/* rc-core.c - Remote Control core module
+ *
+ * Copyright (C) 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.
+ */
+
+#include <media/ir-core.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/freezer.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include "ir-core-priv.h"
+
+#define IRRCV_NUM_DEVICES	256
+
+/* bit array to represent IR sysfs device number */
+static unsigned long ir_core_dev_number;
+
+/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
+#define IR_TAB_MIN_SIZE	256
+#define IR_TAB_MAX_SIZE	8192
+
+/* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */
+#define IR_KEYPRESS_TIMEOUT 250
+
+/* Define the max number of pulse/space transitions to buffer */
+#define MAX_IR_EVENT_SIZE      512
+
+/* Used to keep track of IR raw clients, protected by ir_raw_handler_lock */
+static LIST_HEAD(ir_raw_client_list);
+
+/* Used to handle IR raw handler extensions */
+static DEFINE_MUTEX(ir_raw_handler_lock);
+static LIST_HEAD(ir_raw_handler_list);
+static u64 available_protocols;
+
+#ifdef MODULE
+/* Used to load the decoders */
+static struct work_struct wq_load;
+#endif
+
+/* Used to handle IR raw handler extensions */
+static LIST_HEAD(rc_map_list);
+static DEFINE_SPINLOCK(rc_map_lock);
+
+/* Forward declarations */
+static int ir_register_class(struct input_dev *input_dev);
+static void ir_unregister_class(struct input_dev *input_dev);
+
+static struct rc_keymap *seek_rc_map(const char *name)
+{
+	struct rc_keymap *map = NULL;
+
+	spin_lock(&rc_map_lock);
+	list_for_each_entry(map, &rc_map_list, list) {
+		if (!strcmp(name, map->map.name)) {
+			spin_unlock(&rc_map_lock);
+			return map;
+		}
+	}
+	spin_unlock(&rc_map_lock);
+
+	return NULL;
+}
+
+struct ir_scancode_table *get_rc_map(const char *name)
+{
+
+	struct rc_keymap *map;
+
+	map = seek_rc_map(name);
+#ifdef MODULE
+	if (!map) {
+		int rc = request_module(name);
+		if (rc < 0) {
+			printk(KERN_ERR "Couldn't load IR keymap %s\n", name);
+			return NULL;
+		}
+		msleep(20);	/* Give some time for IR to register */
+
+		map = seek_rc_map(name);
+	}
+#endif
+	if (!map) {
+		printk(KERN_ERR "IR keymap %s not found\n", name);
+		return NULL;
+	}
+
+	printk(KERN_INFO "Registered IR keymap %s\n", map->map.name);
+
+	return &map->map;
+}
+EXPORT_SYMBOL_GPL(get_rc_map);
+
+int ir_register_map(struct rc_keymap *map)
+{
+	spin_lock(&rc_map_lock);
+	list_add_tail(&map->list, &rc_map_list);
+	spin_unlock(&rc_map_lock);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ir_register_map);
+
+void ir_unregister_map(struct rc_keymap *map)
+{
+	spin_lock(&rc_map_lock);
+	list_del(&map->list);
+	spin_unlock(&rc_map_lock);
+}
+EXPORT_SYMBOL_GPL(ir_unregister_map);
+
+
+static struct ir_scancode empty[] = {
+	{ 0x2a, KEY_COFFEE },
+};
+
+static struct rc_keymap empty_map = {
+	.map = {
+		.scan    = empty,
+		.size    = ARRAY_SIZE(empty),
+		.ir_type = IR_TYPE_UNKNOWN,	/* Legacy IR type */
+		.name    = RC_MAP_EMPTY,
+	}
+};
+
+static int ir_raw_event_thread(void *data)
+{
+	struct ir_raw_event ev;
+	struct ir_raw_handler *handler;
+	struct ir_raw_event_ctrl *raw = (struct ir_raw_event_ctrl *)data;
+
+	while (!kthread_should_stop()) {
+		try_to_freeze();
+
+		mutex_lock(&ir_raw_handler_lock);
+
+		while (kfifo_out(&raw->kfifo, &ev, sizeof(ev)) == sizeof(ev)) {
+			list_for_each_entry(handler, &ir_raw_handler_list, list)
+				handler->decode(raw->input_dev, ev);
+			raw->prev_ev = ev;
+		}
+
+		mutex_unlock(&ir_raw_handler_lock);
+
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule();
+	}
+
+	return 0;
+}
+
+/**
+ * ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders
+ * @input_dev:	the struct input_dev device descriptor
+ * @ev:		the struct ir_raw_event descriptor of the pulse/space
+ *
+ * This routine (which may be called from an interrupt context) stores a
+ * pulse/space duration for the raw ir decoding state machines. Pulses are
+ * signalled as positive values and spaces as negative values. A zero value
+ * will reset the decoding state machines.
+ */
+int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+
+	if (!ir->raw)
+		return -EINVAL;
+
+	IR_dprintk(2, "sample: (05%dus %s)\n",
+		TO_US(ev->duration), TO_STR(ev->pulse));
+
+	if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev))
+		return -ENOMEM;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_store);
+
+/**
+ * ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space
+ * @input_dev:	the struct input_dev device descriptor
+ * @type:	the type of the event that has occurred
+ *
+ * This routine (which may be called from an interrupt context) is used to
+ * store the beginning of an ir pulse or space (or the start/end of ir
+ * reception) for the raw ir decoding state machines. This is used by
+ * hardware which does not provide durations directly but only interrupts
+ * (or similar events) on state change.
+ */
+int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type)
+{
+	struct ir_input_dev	*ir = input_get_drvdata(input_dev);
+	ktime_t			now;
+	s64			delta; /* ns */
+	struct ir_raw_event	ev;
+	int			rc = 0;
+
+	if (!ir->raw)
+		return -EINVAL;
+
+	now = ktime_get();
+	delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
+
+	/* Check for a long duration since last event or if we're
+	 * being called for the first time, note that delta can't
+	 * possibly be negative.
+	 */
+	ev.duration = 0;
+	if (delta > IR_MAX_DURATION || !ir->raw->last_type)
+		type |= IR_START_EVENT;
+	else
+		ev.duration = delta;
+
+	if (type & IR_START_EVENT)
+		ir_raw_event_reset(input_dev);
+	else if (ir->raw->last_type & IR_SPACE) {
+		ev.pulse = false;
+		rc = ir_raw_event_store(input_dev, &ev);
+	} else if (ir->raw->last_type & IR_PULSE) {
+		ev.pulse = true;
+		rc = ir_raw_event_store(input_dev, &ev);
+	} else
+		return 0;
+
+	ir->raw->last_event = now;
+	ir->raw->last_type = type;
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
+
+/**
+ * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
+ * @input_dev:	the struct input_dev device descriptor
+ * @type:	the type of the event that has occurred
+ *
+ * This routine (which may be called from an interrupt context) works
+ * in similiar manner to ir_raw_event_store_edge.
+ * This routine is intended for devices with limited internal buffer
+ * It automerges samples of same type, and handles timeouts
+ */
+int ir_raw_event_store_with_filter(struct input_dev *input_dev,
+						struct ir_raw_event *ev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	struct ir_raw_event_ctrl *raw = ir->raw;
+
+	if (!raw || !ir->props)
+		return -EINVAL;
+
+	/* Ignore spaces in idle mode */
+	if (ir->idle && !ev->pulse)
+		return 0;
+	else if (ir->idle)
+		ir_raw_event_set_idle(input_dev, 0);
+
+	if (!raw->this_ev.duration) {
+		raw->this_ev = *ev;
+	} else if (ev->pulse == raw->this_ev.pulse) {
+		raw->this_ev.duration += ev->duration;
+	} else {
+		ir_raw_event_store(input_dev, &raw->this_ev);
+		raw->this_ev = *ev;
+	}
+
+	/* Enter idle mode if nessesary */
+	if (!ev->pulse && ir->props->timeout &&
+		raw->this_ev.duration >= ir->props->timeout)
+		ir_raw_event_set_idle(input_dev, 1);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter);
+
+void ir_raw_event_set_idle(struct input_dev *input_dev, int idle)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	struct ir_raw_event_ctrl *raw = ir->raw;
+	ktime_t now;
+	u64 delta;
+
+	if (!ir->props)
+		return;
+
+	if (!ir->raw)
+		goto out;
+
+	if (idle) {
+		IR_dprintk(2, "enter idle mode\n");
+		raw->last_event = ktime_get();
+	} else {
+		IR_dprintk(2, "exit idle mode\n");
+
+		now = ktime_get();
+		delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
+
+		WARN_ON(raw->this_ev.pulse);
+
+		raw->this_ev.duration =
+			min(raw->this_ev.duration + delta,
+						(u64)IR_MAX_DURATION);
+
+		ir_raw_event_store(input_dev, &raw->this_ev);
+
+		if (raw->this_ev.duration == IR_MAX_DURATION)
+			ir_raw_event_reset(input_dev);
+
+		raw->this_ev.duration = 0;
+	}
+out:
+	if (ir->props->s_idle)
+		ir->props->s_idle(ir->props->priv, idle);
+	ir->idle = idle;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_set_idle);
+
+/**
+ * ir_raw_event_handle() - schedules the decoding of stored ir data
+ * @input_dev:	the struct input_dev device descriptor
+ *
+ * This routine will signal the workqueue to start decoding stored ir data.
+ */
+void ir_raw_event_handle(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+
+	if (!ir->raw)
+		return;
+
+	wake_up_process(ir->raw->thread);
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_handle);
+
+/* used internally by the sysfs interface */
+static u64 ir_raw_get_allowed_protocols(void)
+{
+	u64 protocols;
+	mutex_lock(&ir_raw_handler_lock);
+	protocols = available_protocols;
+	mutex_unlock(&ir_raw_handler_lock);
+	return protocols;
+}
+
+/*
+ * Used to (un)register raw event clients
+ */
+static int ir_raw_event_register(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	int rc;
+	struct ir_raw_handler *handler;
+
+	ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL);
+	if (!ir->raw)
+		return -ENOMEM;
+
+	ir->raw->input_dev = input_dev;
+
+	ir->raw->enabled_protocols = ~0;
+	rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE,
+			 GFP_KERNEL);
+	if (rc < 0) {
+		kfree(ir->raw);
+		ir->raw = NULL;
+		return rc;
+	}
+
+	ir->raw->thread = kthread_run(ir_raw_event_thread, ir->raw,
+			"rc%u",  (unsigned int)ir->devno);
+
+	if (IS_ERR(ir->raw->thread)) {
+		int ret = PTR_ERR(ir->raw->thread);
+
+		kfree(ir->raw);
+		ir->raw = NULL;
+		return ret;
+	}
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_add_tail(&ir->raw->list, &ir_raw_client_list);
+	list_for_each_entry(handler, &ir_raw_handler_list, list)
+		if (handler->raw_register)
+			handler->raw_register(ir->raw->input_dev);
+	mutex_unlock(&ir_raw_handler_lock);
+
+	return 0;
+}
+
+static void ir_raw_event_unregister(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	struct ir_raw_handler *handler;
+
+	if (!ir->raw)
+		return;
+
+	kthread_stop(ir->raw->thread);
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_del(&ir->raw->list);
+	list_for_each_entry(handler, &ir_raw_handler_list, list)
+		if (handler->raw_unregister)
+			handler->raw_unregister(ir->raw->input_dev);
+	mutex_unlock(&ir_raw_handler_lock);
+
+	kfifo_free(&ir->raw->kfifo);
+	kfree(ir->raw);
+	ir->raw = NULL;
+}
+
+/*
+ * Extension interface - used to register the IR decoders
+ */
+
+int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler)
+{
+	struct ir_raw_event_ctrl *raw;
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list);
+	if (ir_raw_handler->raw_register)
+		list_for_each_entry(raw, &ir_raw_client_list, list)
+			ir_raw_handler->raw_register(raw->input_dev);
+	available_protocols |= ir_raw_handler->protocols;
+	mutex_unlock(&ir_raw_handler_lock);
+
+	return 0;
+}
+EXPORT_SYMBOL(ir_raw_handler_register);
+
+void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler)
+{
+	struct ir_raw_event_ctrl *raw;
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_del(&ir_raw_handler->list);
+	if (ir_raw_handler->raw_unregister)
+		list_for_each_entry(raw, &ir_raw_client_list, list)
+			ir_raw_handler->raw_unregister(raw->input_dev);
+	available_protocols &= ~ir_raw_handler->protocols;
+	mutex_unlock(&ir_raw_handler_lock);
+}
+EXPORT_SYMBOL(ir_raw_handler_unregister);
+
+#ifdef MODULE
+static void init_decoders(struct work_struct *work)
+{
+	/* Load the decoder modules */
+
+	load_nec_decode();
+	load_rc5_decode();
+	load_rc6_decode();
+	load_jvc_decode();
+	load_sony_decode();
+	load_lirc_codec();
+
+	/* If needed, we may later add some init code. In this case,
+	   it is needed to change the CONFIG_MODULE test at ir-core.h
+	 */
+}
+#endif
+
+static void ir_raw_init(void)
+{
+#ifdef MODULE
+	INIT_WORK(&wq_load, init_decoders);
+	schedule_work(&wq_load);
+#endif
+}
+
+/**
+ * ir_resize_table() - resizes a scancode table if necessary
+ * @rc_tab:	the ir_scancode_table to resize
+ * @return:	zero on success or a negative error code
+ *
+ * This routine will shrink the ir_scancode_table if it has lots of
+ * unused entries and grow it if it is full.
+ */
+static int ir_resize_table(struct ir_scancode_table *rc_tab)
+{
+	unsigned int oldalloc = rc_tab->alloc;
+	unsigned int newalloc = oldalloc;
+	struct ir_scancode *oldscan = rc_tab->scan;
+	struct ir_scancode *newscan;
+
+	if (rc_tab->size == rc_tab->len) {
+		/* All entries in use -> grow keytable */
+		if (rc_tab->alloc >= IR_TAB_MAX_SIZE)
+			return -ENOMEM;
+
+		newalloc *= 2;
+		IR_dprintk(1, "Growing table to %u bytes\n", newalloc);
+	}
+
+	if ((rc_tab->len * 3 < rc_tab->size) && (oldalloc > IR_TAB_MIN_SIZE)) {
+		/* Less than 1/3 of entries in use -> shrink keytable */
+		newalloc /= 2;
+		IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc);
+	}
+
+	if (newalloc == oldalloc)
+		return 0;
+
+	newscan = kmalloc(newalloc, GFP_ATOMIC);
+	if (!newscan) {
+		IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc);
+		return -ENOMEM;
+	}
+
+	memcpy(newscan, rc_tab->scan, rc_tab->len * sizeof(struct ir_scancode));
+	rc_tab->scan = newscan;
+	rc_tab->alloc = newalloc;
+	rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode);
+	kfree(oldscan);
+	return 0;
+}
+
+/**
+ * ir_do_setkeycode() - internal function to set a keycode in the
+ *			scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @rc_tab:	the struct ir_scancode_table to set the keycode in
+ * @scancode:	the scancode for the ir command
+ * @keycode:	the keycode for the ir command
+ * @resize:	whether the keytable may be shrunk
+ * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
+ *
+ * This routine is used internally to manipulate the scancode->keycode table.
+ * The caller has to hold @rc_tab->lock.
+ */
+static int ir_do_setkeycode(struct input_dev *dev,
+			    struct ir_scancode_table *rc_tab,
+			    unsigned scancode, unsigned keycode,
+			    bool resize)
+{
+	unsigned int i;
+	int old_keycode = KEY_RESERVED;
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+
+	/*
+	 * Unfortunately, some hardware-based IR decoders don't provide
+	 * all bits for the complete IR code. In general, they provide only
+	 * the command part of the IR code. Yet, as it is possible to replace
+	 * the provided IR with another one, it is needed to allow loading
+	 * IR tables from other remotes. So,
+	 */
+	if (ir_dev->props && ir_dev->props->scanmask) {
+		scancode &= ir_dev->props->scanmask;
+	}
+
+	/* First check if we already have a mapping for this ir command */
+	for (i = 0; i < rc_tab->len; i++) {
+		/* Keytable is sorted from lowest to highest scancode */
+		if (rc_tab->scan[i].scancode > scancode)
+			break;
+		else if (rc_tab->scan[i].scancode < scancode)
+			continue;
+
+		old_keycode = rc_tab->scan[i].keycode;
+		rc_tab->scan[i].keycode = keycode;
+
+		/* Did the user wish to remove the mapping? */
+		if (keycode == KEY_RESERVED || keycode == KEY_UNKNOWN) {
+			IR_dprintk(1, "#%d: Deleting scan 0x%04x\n",
+				   i, scancode);
+			rc_tab->len--;
+			memmove(&rc_tab->scan[i], &rc_tab->scan[i + 1],
+				(rc_tab->len - i) * sizeof(struct ir_scancode));
+		}
+
+		/* Possibly shrink the keytable, failure is not a problem */
+		ir_resize_table(rc_tab);
+		break;
+	}
+
+	if (old_keycode == KEY_RESERVED && keycode != KEY_RESERVED) {
+		/* No previous mapping found, we might need to grow the table */
+		if (resize && ir_resize_table(rc_tab))
+			return -ENOMEM;
+
+		IR_dprintk(1, "#%d: New scan 0x%04x with key 0x%04x\n",
+			   i, scancode, keycode);
+
+		/* i is the proper index to insert our new keycode */
+		memmove(&rc_tab->scan[i + 1], &rc_tab->scan[i],
+			(rc_tab->len - i) * sizeof(struct ir_scancode));
+		rc_tab->scan[i].scancode = scancode;
+		rc_tab->scan[i].keycode = keycode;
+		rc_tab->len++;
+		set_bit(keycode, dev->keybit);
+	} else {
+		IR_dprintk(1, "#%d: Replacing scan 0x%04x with key 0x%04x\n",
+			   i, scancode, keycode);
+		/* A previous mapping was updated... */
+		clear_bit(old_keycode, dev->keybit);
+		/* ...but another scancode might use the same keycode */
+		for (i = 0; i < rc_tab->len; i++) {
+			if (rc_tab->scan[i].keycode == old_keycode) {
+				set_bit(old_keycode, dev->keybit);
+				break;
+			}
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * ir_setkeycode() - set a keycode in the scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @scancode:	the desired scancode
+ * @keycode:	result
+ * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
+ *
+ * This routine is used to handle evdev EVIOCSKEY ioctl.
+ */
+static int ir_setkeycode(struct input_dev *dev,
+			 unsigned int scancode, unsigned int keycode)
+{
+	int rc;
+	unsigned long flags;
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
+
+	spin_lock_irqsave(&rc_tab->lock, flags);
+	rc = ir_do_setkeycode(dev, rc_tab, scancode, keycode, true);
+	spin_unlock_irqrestore(&rc_tab->lock, flags);
+	return rc;
+}
+
+/**
+ * ir_setkeytable() - sets several entries in the scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @to:		the struct ir_scancode_table to copy entries to
+ * @from:	the struct ir_scancode_table to copy entries from
+ * @return:	-EINVAL if all keycodes could not be inserted, otherwise zero.
+ *
+ * This routine is used to handle table initialization.
+ */
+static int ir_setkeytable(struct input_dev *dev,
+			  struct ir_scancode_table *to,
+			  const struct ir_scancode_table *from)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
+	unsigned long flags;
+	unsigned int i;
+	int rc = 0;
+
+	spin_lock_irqsave(&rc_tab->lock, flags);
+	for (i = 0; i < from->size; i++) {
+		rc = ir_do_setkeycode(dev, to, from->scan[i].scancode,
+				      from->scan[i].keycode, false);
+		if (rc)
+			break;
+	}
+	spin_unlock_irqrestore(&rc_tab->lock, flags);
+	return rc;
+}
+
+/**
+ * ir_getkeycode() - get a keycode from the scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @scancode:	the desired scancode
+ * @keycode:	used to return the keycode, if found, or KEY_RESERVED
+ * @return:	always returns zero.
+ *
+ * This routine is used to handle evdev EVIOCGKEY ioctl.
+ */
+static int ir_getkeycode(struct input_dev *dev,
+			 unsigned int scancode, unsigned int *keycode)
+{
+	int start, end, mid;
+	unsigned long flags;
+	int key = KEY_RESERVED;
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
+
+	spin_lock_irqsave(&rc_tab->lock, flags);
+	start = 0;
+	end = rc_tab->len - 1;
+	while (start <= end) {
+		mid = (start + end) / 2;
+		if (rc_tab->scan[mid].scancode < scancode)
+			start = mid + 1;
+		else if (rc_tab->scan[mid].scancode > scancode)
+			end = mid - 1;
+		else {
+			key = rc_tab->scan[mid].keycode;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&rc_tab->lock, flags);
+
+	if (key == KEY_RESERVED)
+		IR_dprintk(1, "unknown key for scancode 0x%04x\n",
+			   scancode);
+
+	*keycode = key;
+	return 0;
+}
+
+/**
+ * ir_g_keycode_from_table() - gets the keycode that corresponds to a scancode
+ * @input_dev:	the struct input_dev descriptor of the device
+ * @scancode:	the scancode that we're seeking
+ *
+ * This routine is used by the input routines when a key is pressed at the
+ * IR. The scancode is received and needs to be converted into a keycode.
+ * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the
+ * corresponding keycode from the table.
+ */
+u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode)
+{
+	int keycode;
+
+	ir_getkeycode(dev, scancode, &keycode);
+	if (keycode != KEY_RESERVED)
+		IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n",
+			   dev->name, scancode, keycode);
+	return keycode;
+}
+EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
+
+/**
+ * ir_keyup() - generates input event to cleanup a key press
+ * @ir:         the struct ir_input_dev descriptor of the device
+ *
+ * This routine is used to signal that a key has been released on the
+ * remote control. It reports a keyup input event via input_report_key().
+ */
+static void ir_keyup(struct ir_input_dev *ir)
+{
+	if (!ir->keypressed)
+		return;
+
+	IR_dprintk(1, "keyup key 0x%04x\n", ir->last_keycode);
+	input_report_key(ir->input_dev, ir->last_keycode, 0);
+	input_sync(ir->input_dev);
+	ir->keypressed = false;
+}
+
+/**
+ * ir_timer_keyup() - generates a keyup event after a timeout
+ * @cookie:     a pointer to struct ir_input_dev passed to setup_timer()
+ *
+ * This routine will generate a keyup event some time after a keydown event
+ * is generated when no further activity has been detected.
+ */
+static void ir_timer_keyup(unsigned long cookie)
+{
+	struct ir_input_dev *ir = (struct ir_input_dev *)cookie;
+	unsigned long flags;
+
+	/*
+	 * ir->keyup_jiffies is used to prevent a race condition if a
+	 * hardware interrupt occurs at this point and the keyup timer
+	 * event is moved further into the future as a result.
+	 *
+	 * The timer will then be reactivated and this function called
+	 * again in the future. We need to exit gracefully in that case
+	 * to allow the input subsystem to do its auto-repeat magic or
+	 * a keyup event might follow immediately after the keydown.
+	 */
+	spin_lock_irqsave(&ir->keylock, flags);
+	if (time_is_after_eq_jiffies(ir->keyup_jiffies))
+		ir_keyup(ir);
+	spin_unlock_irqrestore(&ir->keylock, flags);
+}
+
+/**
+ * ir_repeat() - notifies the IR core that a key is still pressed
+ * @dev:        the struct input_dev descriptor of the device
+ *
+ * This routine is used by IR decoders when a repeat message which does
+ * not include the necessary bits to reproduce the scancode has been
+ * received.
+ */
+void ir_repeat(struct input_dev *dev)
+{
+	unsigned long flags;
+	struct ir_input_dev *ir = input_get_drvdata(dev);
+
+	spin_lock_irqsave(&ir->keylock, flags);
+
+	input_event(dev, EV_MSC, MSC_SCAN, ir->last_scancode);
+
+	if (!ir->keypressed)
+		goto out;
+
+	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
+	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
+
+out:
+	spin_unlock_irqrestore(&ir->keylock, flags);
+}
+EXPORT_SYMBOL_GPL(ir_repeat);
+
+/**
+ * ir_keydown() - generates input event for a key press
+ * @dev:        the struct input_dev descriptor of the device
+ * @scancode:   the scancode that we're seeking
+ * @toggle:     the toggle value (protocol dependent, if the protocol doesn't
+ *              support toggle values, this should be set to zero)
+ *
+ * This routine is used by the input routines when a key is pressed at the
+ * IR. It gets the keycode for a scancode and reports an input event via
+ * input_report_key().
+ */
+void ir_keydown(struct input_dev *dev, int scancode, u8 toggle)
+{
+	unsigned long flags;
+	struct ir_input_dev *ir = input_get_drvdata(dev);
+
+	u32 keycode = ir_g_keycode_from_table(dev, scancode);
+
+	spin_lock_irqsave(&ir->keylock, flags);
+
+	input_event(dev, EV_MSC, MSC_SCAN, scancode);
+
+	/* Repeat event? */
+	if (ir->keypressed &&
+	    ir->last_scancode == scancode &&
+	    ir->last_toggle == toggle)
+		goto set_timer;
+
+	/* Release old keypress */
+	ir_keyup(ir);
+
+	ir->last_scancode = scancode;
+	ir->last_toggle = toggle;
+	ir->last_keycode = keycode;
+
+
+	if (keycode == KEY_RESERVED)
+		goto out;
+
+
+	/* Register a keypress */
+	ir->keypressed = true;
+	IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n",
+		   dev->name, keycode, scancode);
+	input_report_key(dev, ir->last_keycode, 1);
+	input_sync(dev);
+
+set_timer:
+	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
+	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
+out:
+	spin_unlock_irqrestore(&ir->keylock, flags);
+}
+EXPORT_SYMBOL_GPL(ir_keydown);
+
+static int ir_open(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	return ir_dev->props->open(ir_dev->props->priv);
+}
+
+static void ir_close(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	ir_dev->props->close(ir_dev->props->priv);
+}
+
+/**
+ * __ir_input_register() - sets the IR keycode table and add the handlers
+ *			    for keymap table get/set
+ * @input_dev:	the struct input_dev descriptor of the device
+ * @rc_tab:	the struct ir_scancode_table table of scancode/keymap
+ *
+ * This routine is used to initialize the input infrastructure
+ * to work with an IR.
+ * It will register the input/evdev interface for the device and
+ * register the syfs code for IR class
+ */
+int __ir_input_register(struct input_dev *input_dev,
+		      const struct ir_scancode_table *rc_tab,
+		      struct ir_dev_props *props,
+		      const char *driver_name)
+{
+	struct ir_input_dev *ir_dev;
+	int rc;
+
+	if (rc_tab->scan == NULL || !rc_tab->size)
+		return -EINVAL;
+
+	ir_dev = kzalloc(sizeof(*ir_dev), GFP_KERNEL);
+	if (!ir_dev)
+		return -ENOMEM;
+
+	ir_dev->driver_name = kasprintf(GFP_KERNEL, "%s", driver_name);
+	if (!ir_dev->driver_name) {
+		rc = -ENOMEM;
+		goto out_dev;
+	}
+
+	input_dev->getkeycode = ir_getkeycode;
+	input_dev->setkeycode = ir_setkeycode;
+	input_set_drvdata(input_dev, ir_dev);
+	ir_dev->input_dev = input_dev;
+
+	spin_lock_init(&ir_dev->rc_tab.lock);
+	spin_lock_init(&ir_dev->keylock);
+	setup_timer(&ir_dev->timer_keyup, ir_timer_keyup, (unsigned long)ir_dev);
+
+	ir_dev->rc_tab.name = rc_tab->name;
+	ir_dev->rc_tab.ir_type = rc_tab->ir_type;
+	ir_dev->rc_tab.alloc = roundup_pow_of_two(rc_tab->size *
+						  sizeof(struct ir_scancode));
+	ir_dev->rc_tab.scan = kmalloc(ir_dev->rc_tab.alloc, GFP_KERNEL);
+	ir_dev->rc_tab.size = ir_dev->rc_tab.alloc / sizeof(struct ir_scancode);
+	if (props) {
+		ir_dev->props = props;
+		if (props->open)
+			input_dev->open = ir_open;
+		if (props->close)
+			input_dev->close = ir_close;
+	}
+
+	if (!ir_dev->rc_tab.scan) {
+		rc = -ENOMEM;
+		goto out_name;
+	}
+
+	IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
+		   ir_dev->rc_tab.size, ir_dev->rc_tab.alloc);
+
+	set_bit(EV_KEY, input_dev->evbit);
+	set_bit(EV_REP, input_dev->evbit);
+	set_bit(EV_MSC, input_dev->evbit);
+	set_bit(MSC_SCAN, input_dev->mscbit);
+
+	if (ir_setkeytable(input_dev, &ir_dev->rc_tab, rc_tab)) {
+		rc = -ENOMEM;
+		goto out_table;
+	}
+
+	rc = ir_register_class(input_dev);
+	if (rc < 0)
+		goto out_table;
+
+	if (ir_dev->props)
+		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) {
+			rc = ir_raw_event_register(input_dev);
+			if (rc < 0)
+				goto out_event;
+		}
+
+	IR_dprintk(1, "Registered input device on %s for %s remote%s.\n",
+		   driver_name, rc_tab->name,
+		   (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ?
+			" in raw mode" : "");
+
+	return 0;
+
+out_event:
+	ir_unregister_class(input_dev);
+out_table:
+	kfree(ir_dev->rc_tab.scan);
+out_name:
+	kfree(ir_dev->driver_name);
+out_dev:
+	kfree(ir_dev);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(__ir_input_register);
+
+/**
+ * ir_input_unregister() - unregisters IR and frees resources
+ * @input_dev:	the struct input_dev descriptor of the device
+
+ * This routine is used to free memory and de-register interfaces.
+ */
+void ir_input_unregister(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+	struct ir_scancode_table *rc_tab;
+
+	if (!ir_dev)
+		return;
+
+	IR_dprintk(1, "Freed keycode table\n");
+
+	del_timer_sync(&ir_dev->timer_keyup);
+	if (ir_dev->props)
+		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW)
+			ir_raw_event_unregister(input_dev);
+
+	rc_tab = &ir_dev->rc_tab;
+	rc_tab->size = 0;
+	kfree(rc_tab->scan);
+	rc_tab->scan = NULL;
+
+	ir_unregister_class(input_dev);
+
+	kfree(ir_dev->driver_name);
+	kfree(ir_dev);
+}
+EXPORT_SYMBOL_GPL(ir_input_unregister);
+
+/* class for /sys/class/rc */
+static char *ir_devnode(struct device *dev, mode_t *mode)
+{
+	return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
+}
+
+static struct class ir_input_class = {
+	.name		= "rc",
+	.devnode	= ir_devnode,
+};
+
+static struct {
+	u64	type;
+	char	*name;
+} proto_names[] = {
+	{ IR_TYPE_UNKNOWN,	"unknown"	},
+	{ IR_TYPE_RC5,		"rc-5"		},
+	{ IR_TYPE_NEC,		"nec"		},
+	{ IR_TYPE_RC6,		"rc-6"		},
+	{ IR_TYPE_JVC,		"jvc"		},
+	{ IR_TYPE_SONY,		"sony"		},
+	{ IR_TYPE_RC5_SZ,	"rc-5-sz"	},
+	{ IR_TYPE_LIRC,		"lirc"		},
+};
+
+#define PROTO_NONE	"none"
+
+/**
+ * show_protocols() - shows the current IR protocol(s)
+ * @d:		the device descriptor
+ * @mattr:	the device attribute struct (unused)
+ * @buf:	a pointer to the output buffer
+ *
+ * This routine is a callback routine for input read the IR protocol type(s).
+ * it is trigged by reading /sys/class/rc/rc?/protocols.
+ * It returns the protocol names of supported protocols.
+ * Enabled protocols are printed in brackets.
+ */
+static ssize_t show_protocols(struct device *d,
+			      struct device_attribute *mattr, char *buf)
+{
+	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
+	u64 allowed, enabled;
+	char *tmp = buf;
+	int i;
+
+	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
+		enabled = ir_dev->rc_tab.ir_type;
+		allowed = ir_dev->props->allowed_protos;
+	} else {
+		enabled = ir_dev->raw->enabled_protocols;
+		allowed = ir_raw_get_allowed_protocols();
+	}
+
+	IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n",
+		   (long long)allowed,
+		   (long long)enabled);
+
+	for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
+		if (allowed & enabled & proto_names[i].type)
+			tmp += sprintf(tmp, "[%s] ", proto_names[i].name);
+		else if (allowed & proto_names[i].type)
+			tmp += sprintf(tmp, "%s ", proto_names[i].name);
+	}
+
+	if (tmp != buf)
+		tmp--;
+	*tmp = '\n';
+	return tmp + 1 - buf;
+}
+
+/**
+ * store_protocols() - changes the current IR protocol(s)
+ * @d:		the device descriptor
+ * @mattr:	the device attribute struct (unused)
+ * @buf:	a pointer to the input buffer
+ * @len:	length of the input buffer
+ *
+ * This routine is a callback routine for changing the IR protocol type.
+ * It is trigged by writing to /sys/class/rc/rc?/protocols.
+ * Writing "+proto" will add a protocol to the list of enabled protocols.
+ * Writing "-proto" will remove a protocol from the list of enabled protocols.
+ * Writing "proto" will enable only "proto".
+ * Writing "none" will disable all protocols.
+ * Returns -EINVAL if an invalid protocol combination or unknown protocol name
+ * is used, otherwise @len.
+ */
+static ssize_t store_protocols(struct device *d,
+			       struct device_attribute *mattr,
+			       const char *data,
+			       size_t len)
+{
+	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
+	bool enable, disable;
+	const char *tmp;
+	u64 type;
+	u64 mask;
+	int rc, i, count = 0;
+	unsigned long flags;
+
+	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE)
+		type = ir_dev->rc_tab.ir_type;
+	else
+		type = ir_dev->raw->enabled_protocols;
+
+	while ((tmp = strsep((char **) &data, " \n")) != NULL) {
+		if (!*tmp)
+			break;
+
+		if (*tmp == '+') {
+			enable = true;
+			disable = false;
+			tmp++;
+		} else if (*tmp == '-') {
+			enable = false;
+			disable = true;
+			tmp++;
+		} else {
+			enable = false;
+			disable = false;
+		}
+
+		if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) {
+			tmp += sizeof(PROTO_NONE);
+			mask = 0;
+			count++;
+		} else {
+			for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
+				if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) {
+					tmp += strlen(proto_names[i].name);
+					mask = proto_names[i].type;
+					break;
+				}
+			}
+			if (i == ARRAY_SIZE(proto_names)) {
+				IR_dprintk(1, "Unknown protocol: '%s'\n", tmp);
+				return -EINVAL;
+			}
+			count++;
+		}
+
+		if (enable)
+			type |= mask;
+		else if (disable)
+			type &= ~mask;
+		else
+			type = mask;
+	}
+
+	if (!count) {
+		IR_dprintk(1, "Protocol not specified\n");
+		return -EINVAL;
+	}
+
+	if (ir_dev->props && ir_dev->props->change_protocol) {
+		rc = ir_dev->props->change_protocol(ir_dev->props->priv,
+						    type);
+		if (rc < 0) {
+			IR_dprintk(1, "Error setting protocols to 0x%llx\n",
+				   (long long)type);
+			return -EINVAL;
+		}
+	}
+
+	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
+		spin_lock_irqsave(&ir_dev->rc_tab.lock, flags);
+		ir_dev->rc_tab.ir_type = type;
+		spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags);
+	} else {
+		ir_dev->raw->enabled_protocols = type;
+	}
+
+	IR_dprintk(1, "Current protocol(s): 0x%llx\n",
+		   (long long)type);
+
+	return len;
+}
+
+#define ADD_HOTPLUG_VAR(fmt, val...)					\
+	do {								\
+		int err = add_uevent_var(env, fmt, val);		\
+		if (err)						\
+			return err;					\
+	} while (0)
+
+static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
+{
+	struct ir_input_dev *ir_dev = dev_get_drvdata(device);
+
+	if (ir_dev->rc_tab.name)
+		ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name);
+	if (ir_dev->driver_name)
+		ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name);
+
+	return 0;
+}
+
+/*
+ * Static device attribute struct with the sysfs attributes for IR's
+ */
+static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
+		   show_protocols, store_protocols);
+
+static struct attribute *rc_dev_attrs[] = {
+	&dev_attr_protocols.attr,
+	NULL,
+};
+
+static struct attribute_group rc_dev_attr_grp = {
+	.attrs	= rc_dev_attrs,
+};
+
+static const struct attribute_group *rc_dev_attr_groups[] = {
+	&rc_dev_attr_grp,
+	NULL
+};
+
+static struct device_type rc_dev_type = {
+	.groups		= rc_dev_attr_groups,
+	.uevent		= rc_dev_uevent,
+};
+
+/**
+ * ir_register_class() - creates the sysfs for /sys/class/rc/rc?
+ * @input_dev:	the struct input_dev descriptor of the device
+ *
+ * This routine is used to register the syfs code for IR class
+ */
+static int ir_register_class(struct input_dev *input_dev)
+{
+	int rc;
+	const char *path;
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+	int devno = find_first_zero_bit(&ir_core_dev_number,
+					IRRCV_NUM_DEVICES);
+
+	if (unlikely(devno < 0))
+		return devno;
+
+	ir_dev->dev.type = &rc_dev_type;
+
+	ir_dev->dev.class = &ir_input_class;
+	ir_dev->dev.parent = input_dev->dev.parent;
+	dev_set_name(&ir_dev->dev, "rc%d", devno);
+	dev_set_drvdata(&ir_dev->dev, ir_dev);
+	rc = device_register(&ir_dev->dev);
+	if (rc)
+		return rc;
+
+
+	input_dev->dev.parent = &ir_dev->dev;
+	rc = input_register_device(input_dev);
+	if (rc < 0) {
+		device_del(&ir_dev->dev);
+		return rc;
+	}
+
+	__module_get(THIS_MODULE);
+
+	path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL);
+	printk(KERN_INFO "%s: %s as %s\n",
+		dev_name(&ir_dev->dev),
+		input_dev->name ? input_dev->name : "Unspecified device",
+		path ? path : "N/A");
+	kfree(path);
+
+	ir_dev->devno = devno;
+	set_bit(devno, &ir_core_dev_number);
+
+	return 0;
+};
+
+/**
+ * ir_unregister_class() - removes the sysfs for sysfs for
+ *			   /sys/class/rc/rc?
+ * @input_dev:	the struct input_dev descriptor of the device
+ *
+ * This routine is used to unregister the syfs code for IR class
+ */
+static void ir_unregister_class(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	clear_bit(ir_dev->devno, &ir_core_dev_number);
+	input_unregister_device(input_dev);
+	device_del(&ir_dev->dev);
+
+	module_put(THIS_MODULE);
+}
+
+/*
+ * Init/exit code for the module. Basically, creates/removes /sys/class/rc
+ */
+
+static int __init ir_core_init(void)
+{
+	int rc = class_register(&ir_input_class);
+	if (rc) {
+		printk(KERN_ERR "ir_core: unable to register rc class\n");
+		return rc;
+	}
+
+	/* Initialize/load the decoders/keymap code that will be used */
+	ir_raw_init();
+	ir_register_map(&empty_map);
+
+	return 0;
+}
+
+static void __exit ir_core_exit(void)
+{
+	class_unregister(&ir_input_class);
+	ir_unregister_map(&empty_map);
+}
+
+module_init(ir_core_init);
+module_exit(ir_core_exit);
+
+int ir_core_debug;    /* ir_debug level (0,1,2) */
+EXPORT_SYMBOL_GPL(ir_core_debug);
+module_param_named(debug, ir_core_debug, int, 0644);
+
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/IR/rc-map.c b/drivers/media/IR/rc-map.c
deleted file mode 100644
index 689143f..0000000
--- a/drivers/media/IR/rc-map.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/* ir-raw-event.c - handle IR Pulse/Space event
- *
- * Copyright (C) 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.
- */
-
-#include <media/ir-core.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-
-/* Used to handle IR raw handler extensions */
-static LIST_HEAD(rc_map_list);
-static DEFINE_SPINLOCK(rc_map_lock);
-
-static struct rc_keymap *seek_rc_map(const char *name)
-{
-	struct rc_keymap *map = NULL;
-
-	spin_lock(&rc_map_lock);
-	list_for_each_entry(map, &rc_map_list, list) {
-		if (!strcmp(name, map->map.name)) {
-			spin_unlock(&rc_map_lock);
-			return map;
-		}
-	}
-	spin_unlock(&rc_map_lock);
-
-	return NULL;
-}
-
-struct ir_scancode_table *get_rc_map(const char *name)
-{
-
-	struct rc_keymap *map;
-
-	map = seek_rc_map(name);
-#ifdef MODULE
-	if (!map) {
-		int rc = request_module(name);
-		if (rc < 0) {
-			printk(KERN_ERR "Couldn't load IR keymap %s\n", name);
-			return NULL;
-		}
-		msleep(20);	/* Give some time for IR to register */
-
-		map = seek_rc_map(name);
-	}
-#endif
-	if (!map) {
-		printk(KERN_ERR "IR keymap %s not found\n", name);
-		return NULL;
-	}
-
-	printk(KERN_INFO "Registered IR keymap %s\n", map->map.name);
-
-	return &map->map;
-}
-EXPORT_SYMBOL_GPL(get_rc_map);
-
-int ir_register_map(struct rc_keymap *map)
-{
-	spin_lock(&rc_map_lock);
-	list_add_tail(&map->list, &rc_map_list);
-	spin_unlock(&rc_map_lock);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ir_register_map);
-
-void ir_unregister_map(struct rc_keymap *map)
-{
-	spin_lock(&rc_map_lock);
-	list_del(&map->list);
-	spin_unlock(&rc_map_lock);
-}
-EXPORT_SYMBOL_GPL(ir_unregister_map);
-
-
-static struct ir_scancode empty[] = {
-	{ 0x2a, KEY_COFFEE },
-};
-
-static struct rc_keymap empty_map = {
-	.map = {
-		.scan    = empty,
-		.size    = ARRAY_SIZE(empty),
-		.ir_type = IR_TYPE_UNKNOWN,	/* Legacy IR type */
-		.name    = RC_MAP_EMPTY,
-	}
-};
-
-int ir_rcmap_init(void)
-{
-	return ir_register_map(&empty_map);
-}
-
-void ir_rcmap_cleanup(void)
-{
-	ir_unregister_map(&empty_map);
-}
diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index eb7fddf..7b60868 100644
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -115,7 +115,6 @@ enum raw_event_type {
 
 #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
 
-/* From ir-keytable.c */
 int __ir_input_register(struct input_dev *dev,
 		      const struct ir_scancode_table *ir_codes,
 		      struct ir_dev_props *props,
@@ -159,8 +158,6 @@ void ir_repeat(struct input_dev *dev);
 void ir_keydown(struct input_dev *dev, int scancode, u8 toggle);
 u32 ir_g_keycode_from_table(struct input_dev *input_dev, u32 scancode);
 
-/* From ir-raw-event.c */
-
 struct ir_raw_event {
 	unsigned                        pulse:1;
 	unsigned                        duration:31;

[PATCH 1/5] rc-code: merge and rename ir-core

[David Härdeman]

This patch merges the files which makes up ir-core and renames the
resulting module to rc-core. IMHO this makes it much easier to hack
on the core module since all code is in one file.

This also allows some simplification of ir-core-priv.h as fewer internal
functions need to be exposed.

Signed-off-by: David Härdeman <david@hardeman.nu>
---
 drivers/media/IR/Makefile       |    3 
 drivers/media/IR/ir-core-priv.h |   16 
 drivers/media/IR/ir-keytable.c  |  565 ----------------
 drivers/media/IR/ir-raw-event.c |  379 -----------
 drivers/media/IR/ir-sysfs.c     |  340 ----------
 drivers/media/IR/rc-core.c      | 1337 +++++++++++++++++++++++++++++++++++++++
 drivers/media/IR/rc-map.c       |  107 ---
 include/media/ir-core.h         |    3 
 8 files changed, 1338 insertions(+), 1412 deletions(-)
 delete mode 100644 drivers/media/IR/ir-keytable.c
 delete mode 100644 drivers/media/IR/ir-raw-event.c
 delete mode 100644 drivers/media/IR/ir-sysfs.c
 create mode 100644 drivers/media/IR/rc-core.c
 delete mode 100644 drivers/media/IR/rc-map.c

diff --git a/drivers/media/IR/Makefile b/drivers/media/IR/Makefile
index 5367683..f4243f7 100644
--- a/drivers/media/IR/Makefile
+++ b/drivers/media/IR/Makefile
@@ -1,9 +1,8 @@
 ir-common-objs  := ir-functions.o
-ir-core-objs	:= ir-keytable.o ir-sysfs.o ir-raw-event.o rc-map.o
 
 obj-y += keymaps/
 
-obj-$(CONFIG_IR_CORE) += ir-core.o
+obj-$(CONFIG_IR_CORE) += rc-core.o
 obj-$(CONFIG_VIDEO_IR) += ir-common.o
 obj-$(CONFIG_LIRC) += lirc_dev.o
 obj-$(CONFIG_IR_NEC_DECODER) += ir-nec-decoder.o
diff --git a/drivers/media/IR/ir-core-priv.h b/drivers/media/IR/ir-core-priv.h
index a85a8c7..ebd4d4d 100644
--- a/drivers/media/IR/ir-core-priv.h
+++ b/drivers/media/IR/ir-core-priv.h
@@ -110,26 +110,10 @@ static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration)
 #define TO_US(duration)			DIV_ROUND_CLOSEST((duration), 1000)
 #define TO_STR(is_pulse)		((is_pulse) ? "pulse" : "space")
 #define IS_RESET(ev)			(ev.duration == 0)
-/*
- * Routines from ir-sysfs.c - Meant to be called only internally inside
- * ir-core
- */
-
-int ir_register_class(struct input_dev *input_dev);
-void ir_unregister_class(struct input_dev *input_dev);
 
-/*
- * Routines from ir-raw-event.c to be used internally and by decoders
- */
-u64 ir_raw_get_allowed_protocols(void);
-int ir_raw_event_register(struct input_dev *input_dev);
-void ir_raw_event_unregister(struct input_dev *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);
 
-int ir_rcmap_init(void);
-void ir_rcmap_cleanup(void);
 /*
  * Decoder initialization code
  *
diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
deleted file mode 100644
index 7e82a9d..0000000
--- a/drivers/media/IR/ir-keytable.c
+++ /dev/null
@@ -1,565 +0,0 @@
-/* ir-keytable.c - handle IR scancode->keycode tables
- *
- * Copyright (C) 2009 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.
- */
-
-
-#include <linux/input.h>
-#include <linux/slab.h>
-#include "ir-core-priv.h"
-
-/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
-#define IR_TAB_MIN_SIZE	256
-#define IR_TAB_MAX_SIZE	8192
-
-/* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */
-#define IR_KEYPRESS_TIMEOUT 250
-
-/**
- * ir_resize_table() - resizes a scancode table if necessary
- * @rc_tab:	the ir_scancode_table to resize
- * @return:	zero on success or a negative error code
- *
- * This routine will shrink the ir_scancode_table if it has lots of
- * unused entries and grow it if it is full.
- */
-static int ir_resize_table(struct ir_scancode_table *rc_tab)
-{
-	unsigned int oldalloc = rc_tab->alloc;
-	unsigned int newalloc = oldalloc;
-	struct ir_scancode *oldscan = rc_tab->scan;
-	struct ir_scancode *newscan;
-
-	if (rc_tab->size == rc_tab->len) {
-		/* All entries in use -> grow keytable */
-		if (rc_tab->alloc >= IR_TAB_MAX_SIZE)
-			return -ENOMEM;
-
-		newalloc *= 2;
-		IR_dprintk(1, "Growing table to %u bytes\n", newalloc);
-	}
-
-	if ((rc_tab->len * 3 < rc_tab->size) && (oldalloc > IR_TAB_MIN_SIZE)) {
-		/* Less than 1/3 of entries in use -> shrink keytable */
-		newalloc /= 2;
-		IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc);
-	}
-
-	if (newalloc == oldalloc)
-		return 0;
-
-	newscan = kmalloc(newalloc, GFP_ATOMIC);
-	if (!newscan) {
-		IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc);
-		return -ENOMEM;
-	}
-
-	memcpy(newscan, rc_tab->scan, rc_tab->len * sizeof(struct ir_scancode));
-	rc_tab->scan = newscan;
-	rc_tab->alloc = newalloc;
-	rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode);
-	kfree(oldscan);
-	return 0;
-}
-
-/**
- * ir_do_setkeycode() - internal function to set a keycode in the
- *			scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @rc_tab:	the struct ir_scancode_table to set the keycode in
- * @scancode:	the scancode for the ir command
- * @keycode:	the keycode for the ir command
- * @resize:	whether the keytable may be shrunk
- * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
- *
- * This routine is used internally to manipulate the scancode->keycode table.
- * The caller has to hold @rc_tab->lock.
- */
-static int ir_do_setkeycode(struct input_dev *dev,
-			    struct ir_scancode_table *rc_tab,
-			    unsigned scancode, unsigned keycode,
-			    bool resize)
-{
-	unsigned int i;
-	int old_keycode = KEY_RESERVED;
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-
-	/*
-	 * Unfortunately, some hardware-based IR decoders don't provide
-	 * all bits for the complete IR code. In general, they provide only
-	 * the command part of the IR code. Yet, as it is possible to replace
-	 * the provided IR with another one, it is needed to allow loading
-	 * IR tables from other remotes. So,
-	 */
-	if (ir_dev->props && ir_dev->props->scanmask) {
-		scancode &= ir_dev->props->scanmask;
-	}
-
-	/* First check if we already have a mapping for this ir command */
-	for (i = 0; i < rc_tab->len; i++) {
-		/* Keytable is sorted from lowest to highest scancode */
-		if (rc_tab->scan[i].scancode > scancode)
-			break;
-		else if (rc_tab->scan[i].scancode < scancode)
-			continue;
-
-		old_keycode = rc_tab->scan[i].keycode;
-		rc_tab->scan[i].keycode = keycode;
-
-		/* Did the user wish to remove the mapping? */
-		if (keycode == KEY_RESERVED || keycode == KEY_UNKNOWN) {
-			IR_dprintk(1, "#%d: Deleting scan 0x%04x\n",
-				   i, scancode);
-			rc_tab->len--;
-			memmove(&rc_tab->scan[i], &rc_tab->scan[i + 1],
-				(rc_tab->len - i) * sizeof(struct ir_scancode));
-		}
-
-		/* Possibly shrink the keytable, failure is not a problem */
-		ir_resize_table(rc_tab);
-		break;
-	}
-
-	if (old_keycode == KEY_RESERVED && keycode != KEY_RESERVED) {
-		/* No previous mapping found, we might need to grow the table */
-		if (resize && ir_resize_table(rc_tab))
-			return -ENOMEM;
-
-		IR_dprintk(1, "#%d: New scan 0x%04x with key 0x%04x\n",
-			   i, scancode, keycode);
-
-		/* i is the proper index to insert our new keycode */
-		memmove(&rc_tab->scan[i + 1], &rc_tab->scan[i],
-			(rc_tab->len - i) * sizeof(struct ir_scancode));
-		rc_tab->scan[i].scancode = scancode;
-		rc_tab->scan[i].keycode = keycode;
-		rc_tab->len++;
-		set_bit(keycode, dev->keybit);
-	} else {
-		IR_dprintk(1, "#%d: Replacing scan 0x%04x with key 0x%04x\n",
-			   i, scancode, keycode);
-		/* A previous mapping was updated... */
-		clear_bit(old_keycode, dev->keybit);
-		/* ...but another scancode might use the same keycode */
-		for (i = 0; i < rc_tab->len; i++) {
-			if (rc_tab->scan[i].keycode == old_keycode) {
-				set_bit(old_keycode, dev->keybit);
-				break;
-			}
-		}
-	}
-
-	return 0;
-}
-
-/**
- * ir_setkeycode() - set a keycode in the scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @scancode:	the desired scancode
- * @keycode:	result
- * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
- *
- * This routine is used to handle evdev EVIOCSKEY ioctl.
- */
-static int ir_setkeycode(struct input_dev *dev,
-			 unsigned int scancode, unsigned int keycode)
-{
-	int rc;
-	unsigned long flags;
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
-
-	spin_lock_irqsave(&rc_tab->lock, flags);
-	rc = ir_do_setkeycode(dev, rc_tab, scancode, keycode, true);
-	spin_unlock_irqrestore(&rc_tab->lock, flags);
-	return rc;
-}
-
-/**
- * ir_setkeytable() - sets several entries in the scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @to:		the struct ir_scancode_table to copy entries to
- * @from:	the struct ir_scancode_table to copy entries from
- * @return:	-EINVAL if all keycodes could not be inserted, otherwise zero.
- *
- * This routine is used to handle table initialization.
- */
-static int ir_setkeytable(struct input_dev *dev,
-			  struct ir_scancode_table *to,
-			  const struct ir_scancode_table *from)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
-	unsigned long flags;
-	unsigned int i;
-	int rc = 0;
-
-	spin_lock_irqsave(&rc_tab->lock, flags);
-	for (i = 0; i < from->size; i++) {
-		rc = ir_do_setkeycode(dev, to, from->scan[i].scancode,
-				      from->scan[i].keycode, false);
-		if (rc)
-			break;
-	}
-	spin_unlock_irqrestore(&rc_tab->lock, flags);
-	return rc;
-}
-
-/**
- * ir_getkeycode() - get a keycode from the scancode->keycode table
- * @dev:	the struct input_dev device descriptor
- * @scancode:	the desired scancode
- * @keycode:	used to return the keycode, if found, or KEY_RESERVED
- * @return:	always returns zero.
- *
- * This routine is used to handle evdev EVIOCGKEY ioctl.
- */
-static int ir_getkeycode(struct input_dev *dev,
-			 unsigned int scancode, unsigned int *keycode)
-{
-	int start, end, mid;
-	unsigned long flags;
-	int key = KEY_RESERVED;
-	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
-	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
-
-	spin_lock_irqsave(&rc_tab->lock, flags);
-	start = 0;
-	end = rc_tab->len - 1;
-	while (start <= end) {
-		mid = (start + end) / 2;
-		if (rc_tab->scan[mid].scancode < scancode)
-			start = mid + 1;
-		else if (rc_tab->scan[mid].scancode > scancode)
-			end = mid - 1;
-		else {
-			key = rc_tab->scan[mid].keycode;
-			break;
-		}
-	}
-	spin_unlock_irqrestore(&rc_tab->lock, flags);
-
-	if (key == KEY_RESERVED)
-		IR_dprintk(1, "unknown key for scancode 0x%04x\n",
-			   scancode);
-
-	*keycode = key;
-	return 0;
-}
-
-/**
- * ir_g_keycode_from_table() - gets the keycode that corresponds to a scancode
- * @input_dev:	the struct input_dev descriptor of the device
- * @scancode:	the scancode that we're seeking
- *
- * This routine is used by the input routines when a key is pressed at the
- * IR. The scancode is received and needs to be converted into a keycode.
- * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the
- * corresponding keycode from the table.
- */
-u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode)
-{
-	int keycode;
-
-	ir_getkeycode(dev, scancode, &keycode);
-	if (keycode != KEY_RESERVED)
-		IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n",
-			   dev->name, scancode, keycode);
-	return keycode;
-}
-EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
-
-/**
- * ir_keyup() - generates input event to cleanup a key press
- * @ir:         the struct ir_input_dev descriptor of the device
- *
- * This routine is used to signal that a key has been released on the
- * remote control. It reports a keyup input event via input_report_key().
- */
-static void ir_keyup(struct ir_input_dev *ir)
-{
-	if (!ir->keypressed)
-		return;
-
-	IR_dprintk(1, "keyup key 0x%04x\n", ir->last_keycode);
-	input_report_key(ir->input_dev, ir->last_keycode, 0);
-	input_sync(ir->input_dev);
-	ir->keypressed = false;
-}
-
-/**
- * ir_timer_keyup() - generates a keyup event after a timeout
- * @cookie:     a pointer to struct ir_input_dev passed to setup_timer()
- *
- * This routine will generate a keyup event some time after a keydown event
- * is generated when no further activity has been detected.
- */
-static void ir_timer_keyup(unsigned long cookie)
-{
-	struct ir_input_dev *ir = (struct ir_input_dev *)cookie;
-	unsigned long flags;
-
-	/*
-	 * ir->keyup_jiffies is used to prevent a race condition if a
-	 * hardware interrupt occurs at this point and the keyup timer
-	 * event is moved further into the future as a result.
-	 *
-	 * The timer will then be reactivated and this function called
-	 * again in the future. We need to exit gracefully in that case
-	 * to allow the input subsystem to do its auto-repeat magic or
-	 * a keyup event might follow immediately after the keydown.
-	 */
-	spin_lock_irqsave(&ir->keylock, flags);
-	if (time_is_after_eq_jiffies(ir->keyup_jiffies))
-		ir_keyup(ir);
-	spin_unlock_irqrestore(&ir->keylock, flags);
-}
-
-/**
- * ir_repeat() - notifies the IR core that a key is still pressed
- * @dev:        the struct input_dev descriptor of the device
- *
- * This routine is used by IR decoders when a repeat message which does
- * not include the necessary bits to reproduce the scancode has been
- * received.
- */
-void ir_repeat(struct input_dev *dev)
-{
-	unsigned long flags;
-	struct ir_input_dev *ir = input_get_drvdata(dev);
-
-	spin_lock_irqsave(&ir->keylock, flags);
-
-	input_event(dev, EV_MSC, MSC_SCAN, ir->last_scancode);
-
-	if (!ir->keypressed)
-		goto out;
-
-	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
-	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
-
-out:
-	spin_unlock_irqrestore(&ir->keylock, flags);
-}
-EXPORT_SYMBOL_GPL(ir_repeat);
-
-/**
- * ir_keydown() - generates input event for a key press
- * @dev:        the struct input_dev descriptor of the device
- * @scancode:   the scancode that we're seeking
- * @toggle:     the toggle value (protocol dependent, if the protocol doesn't
- *              support toggle values, this should be set to zero)
- *
- * This routine is used by the input routines when a key is pressed at the
- * IR. It gets the keycode for a scancode and reports an input event via
- * input_report_key().
- */
-void ir_keydown(struct input_dev *dev, int scancode, u8 toggle)
-{
-	unsigned long flags;
-	struct ir_input_dev *ir = input_get_drvdata(dev);
-
-	u32 keycode = ir_g_keycode_from_table(dev, scancode);
-
-	spin_lock_irqsave(&ir->keylock, flags);
-
-	input_event(dev, EV_MSC, MSC_SCAN, scancode);
-
-	/* Repeat event? */
-	if (ir->keypressed &&
-	    ir->last_scancode == scancode &&
-	    ir->last_toggle == toggle)
-		goto set_timer;
-
-	/* Release old keypress */
-	ir_keyup(ir);
-
-	ir->last_scancode = scancode;
-	ir->last_toggle = toggle;
-	ir->last_keycode = keycode;
-
-
-	if (keycode == KEY_RESERVED)
-		goto out;
-
-
-	/* Register a keypress */
-	ir->keypressed = true;
-	IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n",
-		   dev->name, keycode, scancode);
-	input_report_key(dev, ir->last_keycode, 1);
-	input_sync(dev);
-
-set_timer:
-	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
-	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
-out:
-	spin_unlock_irqrestore(&ir->keylock, flags);
-}
-EXPORT_SYMBOL_GPL(ir_keydown);
-
-static int ir_open(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-
-	return ir_dev->props->open(ir_dev->props->priv);
-}
-
-static void ir_close(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-
-	ir_dev->props->close(ir_dev->props->priv);
-}
-
-/**
- * __ir_input_register() - sets the IR keycode table and add the handlers
- *			    for keymap table get/set
- * @input_dev:	the struct input_dev descriptor of the device
- * @rc_tab:	the struct ir_scancode_table table of scancode/keymap
- *
- * This routine is used to initialize the input infrastructure
- * to work with an IR.
- * It will register the input/evdev interface for the device and
- * register the syfs code for IR class
- */
-int __ir_input_register(struct input_dev *input_dev,
-		      const struct ir_scancode_table *rc_tab,
-		      struct ir_dev_props *props,
-		      const char *driver_name)
-{
-	struct ir_input_dev *ir_dev;
-	int rc;
-
-	if (rc_tab->scan == NULL || !rc_tab->size)
-		return -EINVAL;
-
-	ir_dev = kzalloc(sizeof(*ir_dev), GFP_KERNEL);
-	if (!ir_dev)
-		return -ENOMEM;
-
-	ir_dev->driver_name = kasprintf(GFP_KERNEL, "%s", driver_name);
-	if (!ir_dev->driver_name) {
-		rc = -ENOMEM;
-		goto out_dev;
-	}
-
-	input_dev->getkeycode = ir_getkeycode;
-	input_dev->setkeycode = ir_setkeycode;
-	input_set_drvdata(input_dev, ir_dev);
-	ir_dev->input_dev = input_dev;
-
-	spin_lock_init(&ir_dev->rc_tab.lock);
-	spin_lock_init(&ir_dev->keylock);
-	setup_timer(&ir_dev->timer_keyup, ir_timer_keyup, (unsigned long)ir_dev);
-
-	ir_dev->rc_tab.name = rc_tab->name;
-	ir_dev->rc_tab.ir_type = rc_tab->ir_type;
-	ir_dev->rc_tab.alloc = roundup_pow_of_two(rc_tab->size *
-						  sizeof(struct ir_scancode));
-	ir_dev->rc_tab.scan = kmalloc(ir_dev->rc_tab.alloc, GFP_KERNEL);
-	ir_dev->rc_tab.size = ir_dev->rc_tab.alloc / sizeof(struct ir_scancode);
-	if (props) {
-		ir_dev->props = props;
-		if (props->open)
-			input_dev->open = ir_open;
-		if (props->close)
-			input_dev->close = ir_close;
-	}
-
-	if (!ir_dev->rc_tab.scan) {
-		rc = -ENOMEM;
-		goto out_name;
-	}
-
-	IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
-		   ir_dev->rc_tab.size, ir_dev->rc_tab.alloc);
-
-	set_bit(EV_KEY, input_dev->evbit);
-	set_bit(EV_REP, input_dev->evbit);
-	set_bit(EV_MSC, input_dev->evbit);
-	set_bit(MSC_SCAN, input_dev->mscbit);
-
-	if (ir_setkeytable(input_dev, &ir_dev->rc_tab, rc_tab)) {
-		rc = -ENOMEM;
-		goto out_table;
-	}
-
-	rc = ir_register_class(input_dev);
-	if (rc < 0)
-		goto out_table;
-
-	if (ir_dev->props)
-		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) {
-			rc = ir_raw_event_register(input_dev);
-			if (rc < 0)
-				goto out_event;
-		}
-
-	IR_dprintk(1, "Registered input device on %s for %s remote%s.\n",
-		   driver_name, rc_tab->name,
-		   (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ?
-			" in raw mode" : "");
-
-	return 0;
-
-out_event:
-	ir_unregister_class(input_dev);
-out_table:
-	kfree(ir_dev->rc_tab.scan);
-out_name:
-	kfree(ir_dev->driver_name);
-out_dev:
-	kfree(ir_dev);
-	return rc;
-}
-EXPORT_SYMBOL_GPL(__ir_input_register);
-
-/**
- * ir_input_unregister() - unregisters IR and frees resources
- * @input_dev:	the struct input_dev descriptor of the device
-
- * This routine is used to free memory and de-register interfaces.
- */
-void ir_input_unregister(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-	struct ir_scancode_table *rc_tab;
-
-	if (!ir_dev)
-		return;
-
-	IR_dprintk(1, "Freed keycode table\n");
-
-	del_timer_sync(&ir_dev->timer_keyup);
-	if (ir_dev->props)
-		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW)
-			ir_raw_event_unregister(input_dev);
-
-	rc_tab = &ir_dev->rc_tab;
-	rc_tab->size = 0;
-	kfree(rc_tab->scan);
-	rc_tab->scan = NULL;
-
-	ir_unregister_class(input_dev);
-
-	kfree(ir_dev->driver_name);
-	kfree(ir_dev);
-}
-EXPORT_SYMBOL_GPL(ir_input_unregister);
-
-int ir_core_debug;    /* ir_debug level (0,1,2) */
-EXPORT_SYMBOL_GPL(ir_core_debug);
-module_param_named(debug, ir_core_debug, int, 0644);
-
-MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
-MODULE_LICENSE("GPL");
diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c
deleted file mode 100644
index 8e0e1b1..0000000
--- a/drivers/media/IR/ir-raw-event.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/* ir-raw-event.c - handle IR Pulse/Space event
- *
- * Copyright (C) 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.
- */
-
-#include <linux/kthread.h>
-#include <linux/mutex.h>
-#include <linux/sched.h>
-#include <linux/freezer.h>
-#include "ir-core-priv.h"
-
-/* Define the max number of pulse/space transitions to buffer */
-#define MAX_IR_EVENT_SIZE      512
-
-/* Used to keep track of IR raw clients, protected by ir_raw_handler_lock */
-static LIST_HEAD(ir_raw_client_list);
-
-/* Used to handle IR raw handler extensions */
-static DEFINE_MUTEX(ir_raw_handler_lock);
-static LIST_HEAD(ir_raw_handler_list);
-static u64 available_protocols;
-
-#ifdef MODULE
-/* Used to load the decoders */
-static struct work_struct wq_load;
-#endif
-
-static int ir_raw_event_thread(void *data)
-{
-	struct ir_raw_event ev;
-	struct ir_raw_handler *handler;
-	struct ir_raw_event_ctrl *raw = (struct ir_raw_event_ctrl *)data;
-
-	while (!kthread_should_stop()) {
-		try_to_freeze();
-
-		mutex_lock(&ir_raw_handler_lock);
-
-		while (kfifo_out(&raw->kfifo, &ev, sizeof(ev)) == sizeof(ev)) {
-			list_for_each_entry(handler, &ir_raw_handler_list, list)
-				handler->decode(raw->input_dev, ev);
-			raw->prev_ev = ev;
-		}
-
-		mutex_unlock(&ir_raw_handler_lock);
-
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule();
-	}
-
-	return 0;
-}
-
-/**
- * ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders
- * @input_dev:	the struct input_dev device descriptor
- * @ev:		the struct ir_raw_event descriptor of the pulse/space
- *
- * This routine (which may be called from an interrupt context) stores a
- * pulse/space duration for the raw ir decoding state machines. Pulses are
- * signalled as positive values and spaces as negative values. A zero value
- * will reset the decoding state machines.
- */
-int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-
-	if (!ir->raw)
-		return -EINVAL;
-
-	IR_dprintk(2, "sample: (05%dus %s)\n",
-		TO_US(ev->duration), TO_STR(ev->pulse));
-
-	if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev))
-		return -ENOMEM;
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_store);
-
-/**
- * ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space
- * @input_dev:	the struct input_dev device descriptor
- * @type:	the type of the event that has occurred
- *
- * This routine (which may be called from an interrupt context) is used to
- * store the beginning of an ir pulse or space (or the start/end of ir
- * reception) for the raw ir decoding state machines. This is used by
- * hardware which does not provide durations directly but only interrupts
- * (or similar events) on state change.
- */
-int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type)
-{
-	struct ir_input_dev	*ir = input_get_drvdata(input_dev);
-	ktime_t			now;
-	s64			delta; /* ns */
-	struct ir_raw_event	ev;
-	int			rc = 0;
-
-	if (!ir->raw)
-		return -EINVAL;
-
-	now = ktime_get();
-	delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
-
-	/* Check for a long duration since last event or if we're
-	 * being called for the first time, note that delta can't
-	 * possibly be negative.
-	 */
-	ev.duration = 0;
-	if (delta > IR_MAX_DURATION || !ir->raw->last_type)
-		type |= IR_START_EVENT;
-	else
-		ev.duration = delta;
-
-	if (type & IR_START_EVENT)
-		ir_raw_event_reset(input_dev);
-	else if (ir->raw->last_type & IR_SPACE) {
-		ev.pulse = false;
-		rc = ir_raw_event_store(input_dev, &ev);
-	} else if (ir->raw->last_type & IR_PULSE) {
-		ev.pulse = true;
-		rc = ir_raw_event_store(input_dev, &ev);
-	} else
-		return 0;
-
-	ir->raw->last_event = now;
-	ir->raw->last_type = type;
-	return rc;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
-
-/**
- * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
- * @input_dev:	the struct input_dev device descriptor
- * @type:	the type of the event that has occurred
- *
- * This routine (which may be called from an interrupt context) works
- * in similiar manner to ir_raw_event_store_edge.
- * This routine is intended for devices with limited internal buffer
- * It automerges samples of same type, and handles timeouts
- */
-int ir_raw_event_store_with_filter(struct input_dev *input_dev,
-						struct ir_raw_event *ev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	struct ir_raw_event_ctrl *raw = ir->raw;
-
-	if (!raw || !ir->props)
-		return -EINVAL;
-
-	/* Ignore spaces in idle mode */
-	if (ir->idle && !ev->pulse)
-		return 0;
-	else if (ir->idle)
-		ir_raw_event_set_idle(input_dev, 0);
-
-	if (!raw->this_ev.duration) {
-		raw->this_ev = *ev;
-	} else if (ev->pulse == raw->this_ev.pulse) {
-		raw->this_ev.duration += ev->duration;
-	} else {
-		ir_raw_event_store(input_dev, &raw->this_ev);
-		raw->this_ev = *ev;
-	}
-
-	/* Enter idle mode if nessesary */
-	if (!ev->pulse && ir->props->timeout &&
-		raw->this_ev.duration >= ir->props->timeout)
-		ir_raw_event_set_idle(input_dev, 1);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter);
-
-void ir_raw_event_set_idle(struct input_dev *input_dev, int idle)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	struct ir_raw_event_ctrl *raw = ir->raw;
-	ktime_t now;
-	u64 delta;
-
-	if (!ir->props)
-		return;
-
-	if (!ir->raw)
-		goto out;
-
-	if (idle) {
-		IR_dprintk(2, "enter idle mode\n");
-		raw->last_event = ktime_get();
-	} else {
-		IR_dprintk(2, "exit idle mode\n");
-
-		now = ktime_get();
-		delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
-
-		WARN_ON(raw->this_ev.pulse);
-
-		raw->this_ev.duration =
-			min(raw->this_ev.duration + delta,
-						(u64)IR_MAX_DURATION);
-
-		ir_raw_event_store(input_dev, &raw->this_ev);
-
-		if (raw->this_ev.duration == IR_MAX_DURATION)
-			ir_raw_event_reset(input_dev);
-
-		raw->this_ev.duration = 0;
-	}
-out:
-	if (ir->props->s_idle)
-		ir->props->s_idle(ir->props->priv, idle);
-	ir->idle = idle;
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_set_idle);
-
-/**
- * ir_raw_event_handle() - schedules the decoding of stored ir data
- * @input_dev:	the struct input_dev device descriptor
- *
- * This routine will signal the workqueue to start decoding stored ir data.
- */
-void ir_raw_event_handle(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-
-	if (!ir->raw)
-		return;
-
-	wake_up_process(ir->raw->thread);
-}
-EXPORT_SYMBOL_GPL(ir_raw_event_handle);
-
-/* used internally by the sysfs interface */
-u64
-ir_raw_get_allowed_protocols()
-{
-	u64 protocols;
-	mutex_lock(&ir_raw_handler_lock);
-	protocols = available_protocols;
-	mutex_unlock(&ir_raw_handler_lock);
-	return protocols;
-}
-
-/*
- * Used to (un)register raw event clients
- */
-int ir_raw_event_register(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	int rc;
-	struct ir_raw_handler *handler;
-
-	ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL);
-	if (!ir->raw)
-		return -ENOMEM;
-
-	ir->raw->input_dev = input_dev;
-
-	ir->raw->enabled_protocols = ~0;
-	rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE,
-			 GFP_KERNEL);
-	if (rc < 0) {
-		kfree(ir->raw);
-		ir->raw = NULL;
-		return rc;
-	}
-
-	ir->raw->thread = kthread_run(ir_raw_event_thread, ir->raw,
-			"rc%u",  (unsigned int)ir->devno);
-
-	if (IS_ERR(ir->raw->thread)) {
-		int ret = PTR_ERR(ir->raw->thread);
-
-		kfree(ir->raw);
-		ir->raw = NULL;
-		return ret;
-	}
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_add_tail(&ir->raw->list, &ir_raw_client_list);
-	list_for_each_entry(handler, &ir_raw_handler_list, list)
-		if (handler->raw_register)
-			handler->raw_register(ir->raw->input_dev);
-	mutex_unlock(&ir_raw_handler_lock);
-
-	return 0;
-}
-
-void ir_raw_event_unregister(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir = input_get_drvdata(input_dev);
-	struct ir_raw_handler *handler;
-
-	if (!ir->raw)
-		return;
-
-	kthread_stop(ir->raw->thread);
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_del(&ir->raw->list);
-	list_for_each_entry(handler, &ir_raw_handler_list, list)
-		if (handler->raw_unregister)
-			handler->raw_unregister(ir->raw->input_dev);
-	mutex_unlock(&ir_raw_handler_lock);
-
-	kfifo_free(&ir->raw->kfifo);
-	kfree(ir->raw);
-	ir->raw = NULL;
-}
-
-/*
- * Extension interface - used to register the IR decoders
- */
-
-int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler)
-{
-	struct ir_raw_event_ctrl *raw;
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list);
-	if (ir_raw_handler->raw_register)
-		list_for_each_entry(raw, &ir_raw_client_list, list)
-			ir_raw_handler->raw_register(raw->input_dev);
-	available_protocols |= ir_raw_handler->protocols;
-	mutex_unlock(&ir_raw_handler_lock);
-
-	return 0;
-}
-EXPORT_SYMBOL(ir_raw_handler_register);
-
-void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler)
-{
-	struct ir_raw_event_ctrl *raw;
-
-	mutex_lock(&ir_raw_handler_lock);
-	list_del(&ir_raw_handler->list);
-	if (ir_raw_handler->raw_unregister)
-		list_for_each_entry(raw, &ir_raw_client_list, list)
-			ir_raw_handler->raw_unregister(raw->input_dev);
-	available_protocols &= ~ir_raw_handler->protocols;
-	mutex_unlock(&ir_raw_handler_lock);
-}
-EXPORT_SYMBOL(ir_raw_handler_unregister);
-
-#ifdef MODULE
-static void init_decoders(struct work_struct *work)
-{
-	/* Load the decoder modules */
-
-	load_nec_decode();
-	load_rc5_decode();
-	load_rc6_decode();
-	load_jvc_decode();
-	load_sony_decode();
-	load_lirc_codec();
-
-	/* If needed, we may later add some init code. In this case,
-	   it is needed to change the CONFIG_MODULE test at ir-core.h
-	 */
-}
-#endif
-
-void ir_raw_init(void)
-{
-#ifdef MODULE
-	INIT_WORK(&wq_load, init_decoders);
-	schedule_work(&wq_load);
-#endif
-}
diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c
deleted file mode 100644
index 96dafc4..0000000
--- a/drivers/media/IR/ir-sysfs.c
+++ /dev/null
@@ -1,340 +0,0 @@
-/* ir-sysfs.c - sysfs interface for RC devices (/sys/class/rc)
- *
- * 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.
- */
-
-#include <linux/slab.h>
-#include <linux/input.h>
-#include <linux/device.h>
-#include "ir-core-priv.h"
-
-#define IRRCV_NUM_DEVICES	256
-
-/* bit array to represent IR sysfs device number */
-static unsigned long ir_core_dev_number;
-
-/* class for /sys/class/rc */
-static char *ir_devnode(struct device *dev, mode_t *mode)
-{
-	return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
-}
-
-static struct class ir_input_class = {
-	.name		= "rc",
-	.devnode	= ir_devnode,
-};
-
-static struct {
-	u64	type;
-	char	*name;
-} proto_names[] = {
-	{ IR_TYPE_UNKNOWN,	"unknown"	},
-	{ IR_TYPE_RC5,		"rc-5"		},
-	{ IR_TYPE_NEC,		"nec"		},
-	{ IR_TYPE_RC6,		"rc-6"		},
-	{ IR_TYPE_JVC,		"jvc"		},
-	{ IR_TYPE_SONY,		"sony"		},
-	{ IR_TYPE_LIRC,		"lirc"		},
-};
-
-#define PROTO_NONE	"none"
-
-/**
- * show_protocols() - shows the current IR protocol(s)
- * @d:		the device descriptor
- * @mattr:	the device attribute struct (unused)
- * @buf:	a pointer to the output buffer
- *
- * This routine is a callback routine for input read the IR protocol type(s).
- * it is trigged by reading /sys/class/rc/rc?/protocols.
- * It returns the protocol names of supported protocols.
- * Enabled protocols are printed in brackets.
- */
-static ssize_t show_protocols(struct device *d,
-			      struct device_attribute *mattr, char *buf)
-{
-	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
-	u64 allowed, enabled;
-	char *tmp = buf;
-	int i;
-
-	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
-		enabled = ir_dev->rc_tab.ir_type;
-		allowed = ir_dev->props->allowed_protos;
-	} else {
-		enabled = ir_dev->raw->enabled_protocols;
-		allowed = ir_raw_get_allowed_protocols();
-	}
-
-	IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n",
-		   (long long)allowed,
-		   (long long)enabled);
-
-	for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
-		if (allowed & enabled & proto_names[i].type)
-			tmp += sprintf(tmp, "[%s] ", proto_names[i].name);
-		else if (allowed & proto_names[i].type)
-			tmp += sprintf(tmp, "%s ", proto_names[i].name);
-	}
-
-	if (tmp != buf)
-		tmp--;
-	*tmp = '\n';
-	return tmp + 1 - buf;
-}
-
-/**
- * store_protocols() - changes the current IR protocol(s)
- * @d:		the device descriptor
- * @mattr:	the device attribute struct (unused)
- * @buf:	a pointer to the input buffer
- * @len:	length of the input buffer
- *
- * This routine is a callback routine for changing the IR protocol type.
- * It is trigged by writing to /sys/class/rc/rc?/protocols.
- * Writing "+proto" will add a protocol to the list of enabled protocols.
- * Writing "-proto" will remove a protocol from the list of enabled protocols.
- * Writing "proto" will enable only "proto".
- * Writing "none" will disable all protocols.
- * Returns -EINVAL if an invalid protocol combination or unknown protocol name
- * is used, otherwise @len.
- */
-static ssize_t store_protocols(struct device *d,
-			       struct device_attribute *mattr,
-			       const char *data,
-			       size_t len)
-{
-	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
-	bool enable, disable;
-	const char *tmp;
-	u64 type;
-	u64 mask;
-	int rc, i, count = 0;
-	unsigned long flags;
-
-	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE)
-		type = ir_dev->rc_tab.ir_type;
-	else
-		type = ir_dev->raw->enabled_protocols;
-
-	while ((tmp = strsep((char **) &data, " \n")) != NULL) {
-		if (!*tmp)
-			break;
-
-		if (*tmp == '+') {
-			enable = true;
-			disable = false;
-			tmp++;
-		} else if (*tmp == '-') {
-			enable = false;
-			disable = true;
-			tmp++;
-		} else {
-			enable = false;
-			disable = false;
-		}
-
-		if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) {
-			tmp += sizeof(PROTO_NONE);
-			mask = 0;
-			count++;
-		} else {
-			for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
-				if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) {
-					tmp += strlen(proto_names[i].name);
-					mask = proto_names[i].type;
-					break;
-				}
-			}
-			if (i == ARRAY_SIZE(proto_names)) {
-				IR_dprintk(1, "Unknown protocol: '%s'\n", tmp);
-				return -EINVAL;
-			}
-			count++;
-		}
-
-		if (enable)
-			type |= mask;
-		else if (disable)
-			type &= ~mask;
-		else
-			type = mask;
-	}
-
-	if (!count) {
-		IR_dprintk(1, "Protocol not specified\n");
-		return -EINVAL;
-	}
-
-	if (ir_dev->props && ir_dev->props->change_protocol) {
-		rc = ir_dev->props->change_protocol(ir_dev->props->priv,
-						    type);
-		if (rc < 0) {
-			IR_dprintk(1, "Error setting protocols to 0x%llx\n",
-				   (long long)type);
-			return -EINVAL;
-		}
-	}
-
-	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
-		spin_lock_irqsave(&ir_dev->rc_tab.lock, flags);
-		ir_dev->rc_tab.ir_type = type;
-		spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags);
-	} else {
-		ir_dev->raw->enabled_protocols = type;
-	}
-
-	IR_dprintk(1, "Current protocol(s): 0x%llx\n",
-		   (long long)type);
-
-	return len;
-}
-
-#define ADD_HOTPLUG_VAR(fmt, val...)					\
-	do {								\
-		int err = add_uevent_var(env, fmt, val);		\
-		if (err)						\
-			return err;					\
-	} while (0)
-
-static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
-{
-	struct ir_input_dev *ir_dev = dev_get_drvdata(device);
-
-	if (ir_dev->rc_tab.name)
-		ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name);
-	if (ir_dev->driver_name)
-		ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name);
-
-	return 0;
-}
-
-/*
- * Static device attribute struct with the sysfs attributes for IR's
- */
-static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
-		   show_protocols, store_protocols);
-
-static struct attribute *rc_dev_attrs[] = {
-	&dev_attr_protocols.attr,
-	NULL,
-};
-
-static struct attribute_group rc_dev_attr_grp = {
-	.attrs	= rc_dev_attrs,
-};
-
-static const struct attribute_group *rc_dev_attr_groups[] = {
-	&rc_dev_attr_grp,
-	NULL
-};
-
-static struct device_type rc_dev_type = {
-	.groups		= rc_dev_attr_groups,
-	.uevent		= rc_dev_uevent,
-};
-
-/**
- * ir_register_class() - creates the sysfs for /sys/class/rc/rc?
- * @input_dev:	the struct input_dev descriptor of the device
- *
- * This routine is used to register the syfs code for IR class
- */
-int ir_register_class(struct input_dev *input_dev)
-{
-	int rc;
-	const char *path;
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-	int devno = find_first_zero_bit(&ir_core_dev_number,
-					IRRCV_NUM_DEVICES);
-
-	if (unlikely(devno < 0))
-		return devno;
-
-	ir_dev->dev.type = &rc_dev_type;
-
-	ir_dev->dev.class = &ir_input_class;
-	ir_dev->dev.parent = input_dev->dev.parent;
-	dev_set_name(&ir_dev->dev, "rc%d", devno);
-	dev_set_drvdata(&ir_dev->dev, ir_dev);
-	rc = device_register(&ir_dev->dev);
-	if (rc)
-		return rc;
-
-
-	input_dev->dev.parent = &ir_dev->dev;
-	rc = input_register_device(input_dev);
-	if (rc < 0) {
-		device_del(&ir_dev->dev);
-		return rc;
-	}
-
-	__module_get(THIS_MODULE);
-
-	path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL);
-	printk(KERN_INFO "%s: %s as %s\n",
-		dev_name(&ir_dev->dev),
-		input_dev->name ? input_dev->name : "Unspecified device",
-		path ? path : "N/A");
-	kfree(path);
-
-	ir_dev->devno = devno;
-	set_bit(devno, &ir_core_dev_number);
-
-	return 0;
-};
-
-/**
- * ir_unregister_class() - removes the sysfs for sysfs for
- *			   /sys/class/rc/rc?
- * @input_dev:	the struct input_dev descriptor of the device
- *
- * This routine is used to unregister the syfs code for IR class
- */
-void ir_unregister_class(struct input_dev *input_dev)
-{
-	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-
-	clear_bit(ir_dev->devno, &ir_core_dev_number);
-	input_unregister_device(input_dev);
-	device_del(&ir_dev->dev);
-
-	module_put(THIS_MODULE);
-}
-
-/*
- * Init/exit code for the module. Basically, creates/removes /sys/class/rc
- */
-
-static int __init ir_core_init(void)
-{
-	int rc = class_register(&ir_input_class);
-	if (rc) {
-		printk(KERN_ERR "ir_core: unable to register rc class\n");
-		return rc;
-	}
-
-	/* Initialize/load the decoders/keymap code that will be used */
-	ir_raw_init();
-	ir_rcmap_init();
-
-	return 0;
-}
-
-static void __exit ir_core_exit(void)
-{
-	class_unregister(&ir_input_class);
-	ir_rcmap_cleanup();
-}
-
-module_init(ir_core_init);
-module_exit(ir_core_exit);
diff --git a/drivers/media/IR/rc-core.c b/drivers/media/IR/rc-core.c
new file mode 100644
index 0000000..b29729f
--- /dev/null
+++ b/drivers/media/IR/rc-core.c
@@ -0,0 +1,1337 @@
+/* rc-core.c - Remote Control core module
+ *
+ * Copyright (C) 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.
+ */
+
+#include <media/ir-core.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/freezer.h>
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include "ir-core-priv.h"
+
+#define IRRCV_NUM_DEVICES	256
+
+/* bit array to represent IR sysfs device number */
+static unsigned long ir_core_dev_number;
+
+/* Sizes are in bytes, 256 bytes allows for 32 entries on x64 */
+#define IR_TAB_MIN_SIZE	256
+#define IR_TAB_MAX_SIZE	8192
+
+/* FIXME: IR_KEYPRESS_TIMEOUT should be protocol specific */
+#define IR_KEYPRESS_TIMEOUT 250
+
+/* Define the max number of pulse/space transitions to buffer */
+#define MAX_IR_EVENT_SIZE      512
+
+/* Used to keep track of IR raw clients, protected by ir_raw_handler_lock */
+static LIST_HEAD(ir_raw_client_list);
+
+/* Used to handle IR raw handler extensions */
+static DEFINE_MUTEX(ir_raw_handler_lock);
+static LIST_HEAD(ir_raw_handler_list);
+static u64 available_protocols;
+
+#ifdef MODULE
+/* Used to load the decoders */
+static struct work_struct wq_load;
+#endif
+
+/* Used to handle IR raw handler extensions */
+static LIST_HEAD(rc_map_list);
+static DEFINE_SPINLOCK(rc_map_lock);
+
+/* Forward declarations */
+static int ir_register_class(struct input_dev *input_dev);
+static void ir_unregister_class(struct input_dev *input_dev);
+
+static struct rc_keymap *seek_rc_map(const char *name)
+{
+	struct rc_keymap *map = NULL;
+
+	spin_lock(&rc_map_lock);
+	list_for_each_entry(map, &rc_map_list, list) {
+		if (!strcmp(name, map->map.name)) {
+			spin_unlock(&rc_map_lock);
+			return map;
+		}
+	}
+	spin_unlock(&rc_map_lock);
+
+	return NULL;
+}
+
+struct ir_scancode_table *get_rc_map(const char *name)
+{
+
+	struct rc_keymap *map;
+
+	map = seek_rc_map(name);
+#ifdef MODULE
+	if (!map) {
+		int rc = request_module(name);
+		if (rc < 0) {
+			printk(KERN_ERR "Couldn't load IR keymap %s\n", name);
+			return NULL;
+		}
+		msleep(20);	/* Give some time for IR to register */
+
+		map = seek_rc_map(name);
+	}
+#endif
+	if (!map) {
+		printk(KERN_ERR "IR keymap %s not found\n", name);
+		return NULL;
+	}
+
+	printk(KERN_INFO "Registered IR keymap %s\n", map->map.name);
+
+	return &map->map;
+}
+EXPORT_SYMBOL_GPL(get_rc_map);
+
+int ir_register_map(struct rc_keymap *map)
+{
+	spin_lock(&rc_map_lock);
+	list_add_tail(&map->list, &rc_map_list);
+	spin_unlock(&rc_map_lock);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ir_register_map);
+
+void ir_unregister_map(struct rc_keymap *map)
+{
+	spin_lock(&rc_map_lock);
+	list_del(&map->list);
+	spin_unlock(&rc_map_lock);
+}
+EXPORT_SYMBOL_GPL(ir_unregister_map);
+
+
+static struct ir_scancode empty[] = {
+	{ 0x2a, KEY_COFFEE },
+};
+
+static struct rc_keymap empty_map = {
+	.map = {
+		.scan    = empty,
+		.size    = ARRAY_SIZE(empty),
+		.ir_type = IR_TYPE_UNKNOWN,	/* Legacy IR type */
+		.name    = RC_MAP_EMPTY,
+	}
+};
+
+static int ir_raw_event_thread(void *data)
+{
+	struct ir_raw_event ev;
+	struct ir_raw_handler *handler;
+	struct ir_raw_event_ctrl *raw = (struct ir_raw_event_ctrl *)data;
+
+	while (!kthread_should_stop()) {
+		try_to_freeze();
+
+		mutex_lock(&ir_raw_handler_lock);
+
+		while (kfifo_out(&raw->kfifo, &ev, sizeof(ev)) == sizeof(ev)) {
+			list_for_each_entry(handler, &ir_raw_handler_list, list)
+				handler->decode(raw->input_dev, ev);
+			raw->prev_ev = ev;
+		}
+
+		mutex_unlock(&ir_raw_handler_lock);
+
+		set_current_state(TASK_INTERRUPTIBLE);
+		schedule();
+	}
+
+	return 0;
+}
+
+/**
+ * ir_raw_event_store() - pass a pulse/space duration to the raw ir decoders
+ * @input_dev:	the struct input_dev device descriptor
+ * @ev:		the struct ir_raw_event descriptor of the pulse/space
+ *
+ * This routine (which may be called from an interrupt context) stores a
+ * pulse/space duration for the raw ir decoding state machines. Pulses are
+ * signalled as positive values and spaces as negative values. A zero value
+ * will reset the decoding state machines.
+ */
+int ir_raw_event_store(struct input_dev *input_dev, struct ir_raw_event *ev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+
+	if (!ir->raw)
+		return -EINVAL;
+
+	IR_dprintk(2, "sample: (05%dus %s)\n",
+		TO_US(ev->duration), TO_STR(ev->pulse));
+
+	if (kfifo_in(&ir->raw->kfifo, ev, sizeof(*ev)) != sizeof(*ev))
+		return -ENOMEM;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_store);
+
+/**
+ * ir_raw_event_store_edge() - notify raw ir decoders of the start of a pulse/space
+ * @input_dev:	the struct input_dev device descriptor
+ * @type:	the type of the event that has occurred
+ *
+ * This routine (which may be called from an interrupt context) is used to
+ * store the beginning of an ir pulse or space (or the start/end of ir
+ * reception) for the raw ir decoding state machines. This is used by
+ * hardware which does not provide durations directly but only interrupts
+ * (or similar events) on state change.
+ */
+int ir_raw_event_store_edge(struct input_dev *input_dev, enum raw_event_type type)
+{
+	struct ir_input_dev	*ir = input_get_drvdata(input_dev);
+	ktime_t			now;
+	s64			delta; /* ns */
+	struct ir_raw_event	ev;
+	int			rc = 0;
+
+	if (!ir->raw)
+		return -EINVAL;
+
+	now = ktime_get();
+	delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
+
+	/* Check for a long duration since last event or if we're
+	 * being called for the first time, note that delta can't
+	 * possibly be negative.
+	 */
+	ev.duration = 0;
+	if (delta > IR_MAX_DURATION || !ir->raw->last_type)
+		type |= IR_START_EVENT;
+	else
+		ev.duration = delta;
+
+	if (type & IR_START_EVENT)
+		ir_raw_event_reset(input_dev);
+	else if (ir->raw->last_type & IR_SPACE) {
+		ev.pulse = false;
+		rc = ir_raw_event_store(input_dev, &ev);
+	} else if (ir->raw->last_type & IR_PULSE) {
+		ev.pulse = true;
+		rc = ir_raw_event_store(input_dev, &ev);
+	} else
+		return 0;
+
+	ir->raw->last_event = now;
+	ir->raw->last_type = type;
+	return rc;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_store_edge);
+
+/**
+ * ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
+ * @input_dev:	the struct input_dev device descriptor
+ * @type:	the type of the event that has occurred
+ *
+ * This routine (which may be called from an interrupt context) works
+ * in similiar manner to ir_raw_event_store_edge.
+ * This routine is intended for devices with limited internal buffer
+ * It automerges samples of same type, and handles timeouts
+ */
+int ir_raw_event_store_with_filter(struct input_dev *input_dev,
+						struct ir_raw_event *ev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	struct ir_raw_event_ctrl *raw = ir->raw;
+
+	if (!raw || !ir->props)
+		return -EINVAL;
+
+	/* Ignore spaces in idle mode */
+	if (ir->idle && !ev->pulse)
+		return 0;
+	else if (ir->idle)
+		ir_raw_event_set_idle(input_dev, 0);
+
+	if (!raw->this_ev.duration) {
+		raw->this_ev = *ev;
+	} else if (ev->pulse == raw->this_ev.pulse) {
+		raw->this_ev.duration += ev->duration;
+	} else {
+		ir_raw_event_store(input_dev, &raw->this_ev);
+		raw->this_ev = *ev;
+	}
+
+	/* Enter idle mode if nessesary */
+	if (!ev->pulse && ir->props->timeout &&
+		raw->this_ev.duration >= ir->props->timeout)
+		ir_raw_event_set_idle(input_dev, 1);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_store_with_filter);
+
+void ir_raw_event_set_idle(struct input_dev *input_dev, int idle)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	struct ir_raw_event_ctrl *raw = ir->raw;
+	ktime_t now;
+	u64 delta;
+
+	if (!ir->props)
+		return;
+
+	if (!ir->raw)
+		goto out;
+
+	if (idle) {
+		IR_dprintk(2, "enter idle mode\n");
+		raw->last_event = ktime_get();
+	} else {
+		IR_dprintk(2, "exit idle mode\n");
+
+		now = ktime_get();
+		delta = ktime_to_ns(ktime_sub(now, ir->raw->last_event));
+
+		WARN_ON(raw->this_ev.pulse);
+
+		raw->this_ev.duration =
+			min(raw->this_ev.duration + delta,
+						(u64)IR_MAX_DURATION);
+
+		ir_raw_event_store(input_dev, &raw->this_ev);
+
+		if (raw->this_ev.duration == IR_MAX_DURATION)
+			ir_raw_event_reset(input_dev);
+
+		raw->this_ev.duration = 0;
+	}
+out:
+	if (ir->props->s_idle)
+		ir->props->s_idle(ir->props->priv, idle);
+	ir->idle = idle;
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_set_idle);
+
+/**
+ * ir_raw_event_handle() - schedules the decoding of stored ir data
+ * @input_dev:	the struct input_dev device descriptor
+ *
+ * This routine will signal the workqueue to start decoding stored ir data.
+ */
+void ir_raw_event_handle(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+
+	if (!ir->raw)
+		return;
+
+	wake_up_process(ir->raw->thread);
+}
+EXPORT_SYMBOL_GPL(ir_raw_event_handle);
+
+/* used internally by the sysfs interface */
+static u64 ir_raw_get_allowed_protocols(void)
+{
+	u64 protocols;
+	mutex_lock(&ir_raw_handler_lock);
+	protocols = available_protocols;
+	mutex_unlock(&ir_raw_handler_lock);
+	return protocols;
+}
+
+/*
+ * Used to (un)register raw event clients
+ */
+static int ir_raw_event_register(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	int rc;
+	struct ir_raw_handler *handler;
+
+	ir->raw = kzalloc(sizeof(*ir->raw), GFP_KERNEL);
+	if (!ir->raw)
+		return -ENOMEM;
+
+	ir->raw->input_dev = input_dev;
+
+	ir->raw->enabled_protocols = ~0;
+	rc = kfifo_alloc(&ir->raw->kfifo, sizeof(s64) * MAX_IR_EVENT_SIZE,
+			 GFP_KERNEL);
+	if (rc < 0) {
+		kfree(ir->raw);
+		ir->raw = NULL;
+		return rc;
+	}
+
+	ir->raw->thread = kthread_run(ir_raw_event_thread, ir->raw,
+			"rc%u",  (unsigned int)ir->devno);
+
+	if (IS_ERR(ir->raw->thread)) {
+		int ret = PTR_ERR(ir->raw->thread);
+
+		kfree(ir->raw);
+		ir->raw = NULL;
+		return ret;
+	}
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_add_tail(&ir->raw->list, &ir_raw_client_list);
+	list_for_each_entry(handler, &ir_raw_handler_list, list)
+		if (handler->raw_register)
+			handler->raw_register(ir->raw->input_dev);
+	mutex_unlock(&ir_raw_handler_lock);
+
+	return 0;
+}
+
+static void ir_raw_event_unregister(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir = input_get_drvdata(input_dev);
+	struct ir_raw_handler *handler;
+
+	if (!ir->raw)
+		return;
+
+	kthread_stop(ir->raw->thread);
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_del(&ir->raw->list);
+	list_for_each_entry(handler, &ir_raw_handler_list, list)
+		if (handler->raw_unregister)
+			handler->raw_unregister(ir->raw->input_dev);
+	mutex_unlock(&ir_raw_handler_lock);
+
+	kfifo_free(&ir->raw->kfifo);
+	kfree(ir->raw);
+	ir->raw = NULL;
+}
+
+/*
+ * Extension interface - used to register the IR decoders
+ */
+
+int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler)
+{
+	struct ir_raw_event_ctrl *raw;
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_add_tail(&ir_raw_handler->list, &ir_raw_handler_list);
+	if (ir_raw_handler->raw_register)
+		list_for_each_entry(raw, &ir_raw_client_list, list)
+			ir_raw_handler->raw_register(raw->input_dev);
+	available_protocols |= ir_raw_handler->protocols;
+	mutex_unlock(&ir_raw_handler_lock);
+
+	return 0;
+}
+EXPORT_SYMBOL(ir_raw_handler_register);
+
+void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler)
+{
+	struct ir_raw_event_ctrl *raw;
+
+	mutex_lock(&ir_raw_handler_lock);
+	list_del(&ir_raw_handler->list);
+	if (ir_raw_handler->raw_unregister)
+		list_for_each_entry(raw, &ir_raw_client_list, list)
+			ir_raw_handler->raw_unregister(raw->input_dev);
+	available_protocols &= ~ir_raw_handler->protocols;
+	mutex_unlock(&ir_raw_handler_lock);
+}
+EXPORT_SYMBOL(ir_raw_handler_unregister);
+
+#ifdef MODULE
+static void init_decoders(struct work_struct *work)
+{
+	/* Load the decoder modules */
+
+	load_nec_decode();
+	load_rc5_decode();
+	load_rc6_decode();
+	load_jvc_decode();
+	load_sony_decode();
+	load_lirc_codec();
+
+	/* If needed, we may later add some init code. In this case,
+	   it is needed to change the CONFIG_MODULE test at ir-core.h
+	 */
+}
+#endif
+
+static void ir_raw_init(void)
+{
+#ifdef MODULE
+	INIT_WORK(&wq_load, init_decoders);
+	schedule_work(&wq_load);
+#endif
+}
+
+/**
+ * ir_resize_table() - resizes a scancode table if necessary
+ * @rc_tab:	the ir_scancode_table to resize
+ * @return:	zero on success or a negative error code
+ *
+ * This routine will shrink the ir_scancode_table if it has lots of
+ * unused entries and grow it if it is full.
+ */
+static int ir_resize_table(struct ir_scancode_table *rc_tab)
+{
+	unsigned int oldalloc = rc_tab->alloc;
+	unsigned int newalloc = oldalloc;
+	struct ir_scancode *oldscan = rc_tab->scan;
+	struct ir_scancode *newscan;
+
+	if (rc_tab->size == rc_tab->len) {
+		/* All entries in use -> grow keytable */
+		if (rc_tab->alloc >= IR_TAB_MAX_SIZE)
+			return -ENOMEM;
+
+		newalloc *= 2;
+		IR_dprintk(1, "Growing table to %u bytes\n", newalloc);
+	}
+
+	if ((rc_tab->len * 3 < rc_tab->size) && (oldalloc > IR_TAB_MIN_SIZE)) {
+		/* Less than 1/3 of entries in use -> shrink keytable */
+		newalloc /= 2;
+		IR_dprintk(1, "Shrinking table to %u bytes\n", newalloc);
+	}
+
+	if (newalloc == oldalloc)
+		return 0;
+
+	newscan = kmalloc(newalloc, GFP_ATOMIC);
+	if (!newscan) {
+		IR_dprintk(1, "Failed to kmalloc %u bytes\n", newalloc);
+		return -ENOMEM;
+	}
+
+	memcpy(newscan, rc_tab->scan, rc_tab->len * sizeof(struct ir_scancode));
+	rc_tab->scan = newscan;
+	rc_tab->alloc = newalloc;
+	rc_tab->size = rc_tab->alloc / sizeof(struct ir_scancode);
+	kfree(oldscan);
+	return 0;
+}
+
+/**
+ * ir_do_setkeycode() - internal function to set a keycode in the
+ *			scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @rc_tab:	the struct ir_scancode_table to set the keycode in
+ * @scancode:	the scancode for the ir command
+ * @keycode:	the keycode for the ir command
+ * @resize:	whether the keytable may be shrunk
+ * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
+ *
+ * This routine is used internally to manipulate the scancode->keycode table.
+ * The caller has to hold @rc_tab->lock.
+ */
+static int ir_do_setkeycode(struct input_dev *dev,
+			    struct ir_scancode_table *rc_tab,
+			    unsigned scancode, unsigned keycode,
+			    bool resize)
+{
+	unsigned int i;
+	int old_keycode = KEY_RESERVED;
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+
+	/*
+	 * Unfortunately, some hardware-based IR decoders don't provide
+	 * all bits for the complete IR code. In general, they provide only
+	 * the command part of the IR code. Yet, as it is possible to replace
+	 * the provided IR with another one, it is needed to allow loading
+	 * IR tables from other remotes. So,
+	 */
+	if (ir_dev->props && ir_dev->props->scanmask) {
+		scancode &= ir_dev->props->scanmask;
+	}
+
+	/* First check if we already have a mapping for this ir command */
+	for (i = 0; i < rc_tab->len; i++) {
+		/* Keytable is sorted from lowest to highest scancode */
+		if (rc_tab->scan[i].scancode > scancode)
+			break;
+		else if (rc_tab->scan[i].scancode < scancode)
+			continue;
+
+		old_keycode = rc_tab->scan[i].keycode;
+		rc_tab->scan[i].keycode = keycode;
+
+		/* Did the user wish to remove the mapping? */
+		if (keycode == KEY_RESERVED || keycode == KEY_UNKNOWN) {
+			IR_dprintk(1, "#%d: Deleting scan 0x%04x\n",
+				   i, scancode);
+			rc_tab->len--;
+			memmove(&rc_tab->scan[i], &rc_tab->scan[i + 1],
+				(rc_tab->len - i) * sizeof(struct ir_scancode));
+		}
+
+		/* Possibly shrink the keytable, failure is not a problem */
+		ir_resize_table(rc_tab);
+		break;
+	}
+
+	if (old_keycode == KEY_RESERVED && keycode != KEY_RESERVED) {
+		/* No previous mapping found, we might need to grow the table */
+		if (resize && ir_resize_table(rc_tab))
+			return -ENOMEM;
+
+		IR_dprintk(1, "#%d: New scan 0x%04x with key 0x%04x\n",
+			   i, scancode, keycode);
+
+		/* i is the proper index to insert our new keycode */
+		memmove(&rc_tab->scan[i + 1], &rc_tab->scan[i],
+			(rc_tab->len - i) * sizeof(struct ir_scancode));
+		rc_tab->scan[i].scancode = scancode;
+		rc_tab->scan[i].keycode = keycode;
+		rc_tab->len++;
+		set_bit(keycode, dev->keybit);
+	} else {
+		IR_dprintk(1, "#%d: Replacing scan 0x%04x with key 0x%04x\n",
+			   i, scancode, keycode);
+		/* A previous mapping was updated... */
+		clear_bit(old_keycode, dev->keybit);
+		/* ...but another scancode might use the same keycode */
+		for (i = 0; i < rc_tab->len; i++) {
+			if (rc_tab->scan[i].keycode == old_keycode) {
+				set_bit(old_keycode, dev->keybit);
+				break;
+			}
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * ir_setkeycode() - set a keycode in the scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @scancode:	the desired scancode
+ * @keycode:	result
+ * @return:	-EINVAL if the keycode could not be inserted, otherwise zero.
+ *
+ * This routine is used to handle evdev EVIOCSKEY ioctl.
+ */
+static int ir_setkeycode(struct input_dev *dev,
+			 unsigned int scancode, unsigned int keycode)
+{
+	int rc;
+	unsigned long flags;
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
+
+	spin_lock_irqsave(&rc_tab->lock, flags);
+	rc = ir_do_setkeycode(dev, rc_tab, scancode, keycode, true);
+	spin_unlock_irqrestore(&rc_tab->lock, flags);
+	return rc;
+}
+
+/**
+ * ir_setkeytable() - sets several entries in the scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @to:		the struct ir_scancode_table to copy entries to
+ * @from:	the struct ir_scancode_table to copy entries from
+ * @return:	-EINVAL if all keycodes could not be inserted, otherwise zero.
+ *
+ * This routine is used to handle table initialization.
+ */
+static int ir_setkeytable(struct input_dev *dev,
+			  struct ir_scancode_table *to,
+			  const struct ir_scancode_table *from)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
+	unsigned long flags;
+	unsigned int i;
+	int rc = 0;
+
+	spin_lock_irqsave(&rc_tab->lock, flags);
+	for (i = 0; i < from->size; i++) {
+		rc = ir_do_setkeycode(dev, to, from->scan[i].scancode,
+				      from->scan[i].keycode, false);
+		if (rc)
+			break;
+	}
+	spin_unlock_irqrestore(&rc_tab->lock, flags);
+	return rc;
+}
+
+/**
+ * ir_getkeycode() - get a keycode from the scancode->keycode table
+ * @dev:	the struct input_dev device descriptor
+ * @scancode:	the desired scancode
+ * @keycode:	used to return the keycode, if found, or KEY_RESERVED
+ * @return:	always returns zero.
+ *
+ * This routine is used to handle evdev EVIOCGKEY ioctl.
+ */
+static int ir_getkeycode(struct input_dev *dev,
+			 unsigned int scancode, unsigned int *keycode)
+{
+	int start, end, mid;
+	unsigned long flags;
+	int key = KEY_RESERVED;
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+	struct ir_scancode_table *rc_tab = &ir_dev->rc_tab;
+
+	spin_lock_irqsave(&rc_tab->lock, flags);
+	start = 0;
+	end = rc_tab->len - 1;
+	while (start <= end) {
+		mid = (start + end) / 2;
+		if (rc_tab->scan[mid].scancode < scancode)
+			start = mid + 1;
+		else if (rc_tab->scan[mid].scancode > scancode)
+			end = mid - 1;
+		else {
+			key = rc_tab->scan[mid].keycode;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&rc_tab->lock, flags);
+
+	if (key == KEY_RESERVED)
+		IR_dprintk(1, "unknown key for scancode 0x%04x\n",
+			   scancode);
+
+	*keycode = key;
+	return 0;
+}
+
+/**
+ * ir_g_keycode_from_table() - gets the keycode that corresponds to a scancode
+ * @input_dev:	the struct input_dev descriptor of the device
+ * @scancode:	the scancode that we're seeking
+ *
+ * This routine is used by the input routines when a key is pressed at the
+ * IR. The scancode is received and needs to be converted into a keycode.
+ * If the key is not found, it returns KEY_RESERVED. Otherwise, returns the
+ * corresponding keycode from the table.
+ */
+u32 ir_g_keycode_from_table(struct input_dev *dev, u32 scancode)
+{
+	int keycode;
+
+	ir_getkeycode(dev, scancode, &keycode);
+	if (keycode != KEY_RESERVED)
+		IR_dprintk(1, "%s: scancode 0x%04x keycode 0x%02x\n",
+			   dev->name, scancode, keycode);
+	return keycode;
+}
+EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
+
+/**
+ * ir_keyup() - generates input event to cleanup a key press
+ * @ir:         the struct ir_input_dev descriptor of the device
+ *
+ * This routine is used to signal that a key has been released on the
+ * remote control. It reports a keyup input event via input_report_key().
+ */
+static void ir_keyup(struct ir_input_dev *ir)
+{
+	if (!ir->keypressed)
+		return;
+
+	IR_dprintk(1, "keyup key 0x%04x\n", ir->last_keycode);
+	input_report_key(ir->input_dev, ir->last_keycode, 0);
+	input_sync(ir->input_dev);
+	ir->keypressed = false;
+}
+
+/**
+ * ir_timer_keyup() - generates a keyup event after a timeout
+ * @cookie:     a pointer to struct ir_input_dev passed to setup_timer()
+ *
+ * This routine will generate a keyup event some time after a keydown event
+ * is generated when no further activity has been detected.
+ */
+static void ir_timer_keyup(unsigned long cookie)
+{
+	struct ir_input_dev *ir = (struct ir_input_dev *)cookie;
+	unsigned long flags;
+
+	/*
+	 * ir->keyup_jiffies is used to prevent a race condition if a
+	 * hardware interrupt occurs at this point and the keyup timer
+	 * event is moved further into the future as a result.
+	 *
+	 * The timer will then be reactivated and this function called
+	 * again in the future. We need to exit gracefully in that case
+	 * to allow the input subsystem to do its auto-repeat magic or
+	 * a keyup event might follow immediately after the keydown.
+	 */
+	spin_lock_irqsave(&ir->keylock, flags);
+	if (time_is_after_eq_jiffies(ir->keyup_jiffies))
+		ir_keyup(ir);
+	spin_unlock_irqrestore(&ir->keylock, flags);
+}
+
+/**
+ * ir_repeat() - notifies the IR core that a key is still pressed
+ * @dev:        the struct input_dev descriptor of the device
+ *
+ * This routine is used by IR decoders when a repeat message which does
+ * not include the necessary bits to reproduce the scancode has been
+ * received.
+ */
+void ir_repeat(struct input_dev *dev)
+{
+	unsigned long flags;
+	struct ir_input_dev *ir = input_get_drvdata(dev);
+
+	spin_lock_irqsave(&ir->keylock, flags);
+
+	input_event(dev, EV_MSC, MSC_SCAN, ir->last_scancode);
+
+	if (!ir->keypressed)
+		goto out;
+
+	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
+	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
+
+out:
+	spin_unlock_irqrestore(&ir->keylock, flags);
+}
+EXPORT_SYMBOL_GPL(ir_repeat);
+
+/**
+ * ir_keydown() - generates input event for a key press
+ * @dev:        the struct input_dev descriptor of the device
+ * @scancode:   the scancode that we're seeking
+ * @toggle:     the toggle value (protocol dependent, if the protocol doesn't
+ *              support toggle values, this should be set to zero)
+ *
+ * This routine is used by the input routines when a key is pressed at the
+ * IR. It gets the keycode for a scancode and reports an input event via
+ * input_report_key().
+ */
+void ir_keydown(struct input_dev *dev, int scancode, u8 toggle)
+{
+	unsigned long flags;
+	struct ir_input_dev *ir = input_get_drvdata(dev);
+
+	u32 keycode = ir_g_keycode_from_table(dev, scancode);
+
+	spin_lock_irqsave(&ir->keylock, flags);
+
+	input_event(dev, EV_MSC, MSC_SCAN, scancode);
+
+	/* Repeat event? */
+	if (ir->keypressed &&
+	    ir->last_scancode == scancode &&
+	    ir->last_toggle == toggle)
+		goto set_timer;
+
+	/* Release old keypress */
+	ir_keyup(ir);
+
+	ir->last_scancode = scancode;
+	ir->last_toggle = toggle;
+	ir->last_keycode = keycode;
+
+
+	if (keycode == KEY_RESERVED)
+		goto out;
+
+
+	/* Register a keypress */
+	ir->keypressed = true;
+	IR_dprintk(1, "%s: key down event, key 0x%04x, scancode 0x%04x\n",
+		   dev->name, keycode, scancode);
+	input_report_key(dev, ir->last_keycode, 1);
+	input_sync(dev);
+
+set_timer:
+	ir->keyup_jiffies = jiffies + msecs_to_jiffies(IR_KEYPRESS_TIMEOUT);
+	mod_timer(&ir->timer_keyup, ir->keyup_jiffies);
+out:
+	spin_unlock_irqrestore(&ir->keylock, flags);
+}
+EXPORT_SYMBOL_GPL(ir_keydown);
+
+static int ir_open(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	return ir_dev->props->open(ir_dev->props->priv);
+}
+
+static void ir_close(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	ir_dev->props->close(ir_dev->props->priv);
+}
+
+/**
+ * __ir_input_register() - sets the IR keycode table and add the handlers
+ *			    for keymap table get/set
+ * @input_dev:	the struct input_dev descriptor of the device
+ * @rc_tab:	the struct ir_scancode_table table of scancode/keymap
+ *
+ * This routine is used to initialize the input infrastructure
+ * to work with an IR.
+ * It will register the input/evdev interface for the device and
+ * register the syfs code for IR class
+ */
+int __ir_input_register(struct input_dev *input_dev,
+		      const struct ir_scancode_table *rc_tab,
+		      struct ir_dev_props *props,
+		      const char *driver_name)
+{
+	struct ir_input_dev *ir_dev;
+	int rc;
+
+	if (rc_tab->scan == NULL || !rc_tab->size)
+		return -EINVAL;
+
+	ir_dev = kzalloc(sizeof(*ir_dev), GFP_KERNEL);
+	if (!ir_dev)
+		return -ENOMEM;
+
+	ir_dev->driver_name = kasprintf(GFP_KERNEL, "%s", driver_name);
+	if (!ir_dev->driver_name) {
+		rc = -ENOMEM;
+		goto out_dev;
+	}
+
+	input_dev->getkeycode = ir_getkeycode;
+	input_dev->setkeycode = ir_setkeycode;
+	input_set_drvdata(input_dev, ir_dev);
+	ir_dev->input_dev = input_dev;
+
+	spin_lock_init(&ir_dev->rc_tab.lock);
+	spin_lock_init(&ir_dev->keylock);
+	setup_timer(&ir_dev->timer_keyup, ir_timer_keyup, (unsigned long)ir_dev);
+
+	ir_dev->rc_tab.name = rc_tab->name;
+	ir_dev->rc_tab.ir_type = rc_tab->ir_type;
+	ir_dev->rc_tab.alloc = roundup_pow_of_two(rc_tab->size *
+						  sizeof(struct ir_scancode));
+	ir_dev->rc_tab.scan = kmalloc(ir_dev->rc_tab.alloc, GFP_KERNEL);
+	ir_dev->rc_tab.size = ir_dev->rc_tab.alloc / sizeof(struct ir_scancode);
+	if (props) {
+		ir_dev->props = props;
+		if (props->open)
+			input_dev->open = ir_open;
+		if (props->close)
+			input_dev->close = ir_close;
+	}
+
+	if (!ir_dev->rc_tab.scan) {
+		rc = -ENOMEM;
+		goto out_name;
+	}
+
+	IR_dprintk(1, "Allocated space for %u keycode entries (%u bytes)\n",
+		   ir_dev->rc_tab.size, ir_dev->rc_tab.alloc);
+
+	set_bit(EV_KEY, input_dev->evbit);
+	set_bit(EV_REP, input_dev->evbit);
+	set_bit(EV_MSC, input_dev->evbit);
+	set_bit(MSC_SCAN, input_dev->mscbit);
+
+	if (ir_setkeytable(input_dev, &ir_dev->rc_tab, rc_tab)) {
+		rc = -ENOMEM;
+		goto out_table;
+	}
+
+	rc = ir_register_class(input_dev);
+	if (rc < 0)
+		goto out_table;
+
+	if (ir_dev->props)
+		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW) {
+			rc = ir_raw_event_register(input_dev);
+			if (rc < 0)
+				goto out_event;
+		}
+
+	IR_dprintk(1, "Registered input device on %s for %s remote%s.\n",
+		   driver_name, rc_tab->name,
+		   (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ?
+			" in raw mode" : "");
+
+	return 0;
+
+out_event:
+	ir_unregister_class(input_dev);
+out_table:
+	kfree(ir_dev->rc_tab.scan);
+out_name:
+	kfree(ir_dev->driver_name);
+out_dev:
+	kfree(ir_dev);
+	return rc;
+}
+EXPORT_SYMBOL_GPL(__ir_input_register);
+
+/**
+ * ir_input_unregister() - unregisters IR and frees resources
+ * @input_dev:	the struct input_dev descriptor of the device
+
+ * This routine is used to free memory and de-register interfaces.
+ */
+void ir_input_unregister(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+	struct ir_scancode_table *rc_tab;
+
+	if (!ir_dev)
+		return;
+
+	IR_dprintk(1, "Freed keycode table\n");
+
+	del_timer_sync(&ir_dev->timer_keyup);
+	if (ir_dev->props)
+		if (ir_dev->props->driver_type == RC_DRIVER_IR_RAW)
+			ir_raw_event_unregister(input_dev);
+
+	rc_tab = &ir_dev->rc_tab;
+	rc_tab->size = 0;
+	kfree(rc_tab->scan);
+	rc_tab->scan = NULL;
+
+	ir_unregister_class(input_dev);
+
+	kfree(ir_dev->driver_name);
+	kfree(ir_dev);
+}
+EXPORT_SYMBOL_GPL(ir_input_unregister);
+
+/* class for /sys/class/rc */
+static char *ir_devnode(struct device *dev, mode_t *mode)
+{
+	return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
+}
+
+static struct class ir_input_class = {
+	.name		= "rc",
+	.devnode	= ir_devnode,
+};
+
+static struct {
+	u64	type;
+	char	*name;
+} proto_names[] = {
+	{ IR_TYPE_UNKNOWN,	"unknown"	},
+	{ IR_TYPE_RC5,		"rc-5"		},
+	{ IR_TYPE_NEC,		"nec"		},
+	{ IR_TYPE_RC6,		"rc-6"		},
+	{ IR_TYPE_JVC,		"jvc"		},
+	{ IR_TYPE_SONY,		"sony"		},
+	{ IR_TYPE_LIRC,		"lirc"		},
+};
+
+#define PROTO_NONE	"none"
+
+/**
+ * show_protocols() - shows the current IR protocol(s)
+ * @d:		the device descriptor
+ * @mattr:	the device attribute struct (unused)
+ * @buf:	a pointer to the output buffer
+ *
+ * This routine is a callback routine for input read the IR protocol type(s).
+ * it is trigged by reading /sys/class/rc/rc?/protocols.
+ * It returns the protocol names of supported protocols.
+ * Enabled protocols are printed in brackets.
+ */
+static ssize_t show_protocols(struct device *d,
+			      struct device_attribute *mattr, char *buf)
+{
+	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
+	u64 allowed, enabled;
+	char *tmp = buf;
+	int i;
+
+	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
+		enabled = ir_dev->rc_tab.ir_type;
+		allowed = ir_dev->props->allowed_protos;
+	} else {
+		enabled = ir_dev->raw->enabled_protocols;
+		allowed = ir_raw_get_allowed_protocols();
+	}
+
+	IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n",
+		   (long long)allowed,
+		   (long long)enabled);
+
+	for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
+		if (allowed & enabled & proto_names[i].type)
+			tmp += sprintf(tmp, "[%s] ", proto_names[i].name);
+		else if (allowed & proto_names[i].type)
+			tmp += sprintf(tmp, "%s ", proto_names[i].name);
+	}
+
+	if (tmp != buf)
+		tmp--;
+	*tmp = '\n';
+	return tmp + 1 - buf;
+}
+
+/**
+ * store_protocols() - changes the current IR protocol(s)
+ * @d:		the device descriptor
+ * @mattr:	the device attribute struct (unused)
+ * @buf:	a pointer to the input buffer
+ * @len:	length of the input buffer
+ *
+ * This routine is a callback routine for changing the IR protocol type.
+ * It is trigged by writing to /sys/class/rc/rc?/protocols.
+ * Writing "+proto" will add a protocol to the list of enabled protocols.
+ * Writing "-proto" will remove a protocol from the list of enabled protocols.
+ * Writing "proto" will enable only "proto".
+ * Writing "none" will disable all protocols.
+ * Returns -EINVAL if an invalid protocol combination or unknown protocol name
+ * is used, otherwise @len.
+ */
+static ssize_t store_protocols(struct device *d,
+			       struct device_attribute *mattr,
+			       const char *data,
+			       size_t len)
+{
+	struct ir_input_dev *ir_dev = dev_get_drvdata(d);
+	bool enable, disable;
+	const char *tmp;
+	u64 type;
+	u64 mask;
+	int rc, i, count = 0;
+	unsigned long flags;
+
+	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE)
+		type = ir_dev->rc_tab.ir_type;
+	else
+		type = ir_dev->raw->enabled_protocols;
+
+	while ((tmp = strsep((char **) &data, " \n")) != NULL) {
+		if (!*tmp)
+			break;
+
+		if (*tmp == '+') {
+			enable = true;
+			disable = false;
+			tmp++;
+		} else if (*tmp == '-') {
+			enable = false;
+			disable = true;
+			tmp++;
+		} else {
+			enable = false;
+			disable = false;
+		}
+
+		if (!enable && !disable && !strncasecmp(tmp, PROTO_NONE, sizeof(PROTO_NONE))) {
+			tmp += sizeof(PROTO_NONE);
+			mask = 0;
+			count++;
+		} else {
+			for (i = 0; i < ARRAY_SIZE(proto_names); i++) {
+				if (!strncasecmp(tmp, proto_names[i].name, strlen(proto_names[i].name))) {
+					tmp += strlen(proto_names[i].name);
+					mask = proto_names[i].type;
+					break;
+				}
+			}
+			if (i == ARRAY_SIZE(proto_names)) {
+				IR_dprintk(1, "Unknown protocol: '%s'\n", tmp);
+				return -EINVAL;
+			}
+			count++;
+		}
+
+		if (enable)
+			type |= mask;
+		else if (disable)
+			type &= ~mask;
+		else
+			type = mask;
+	}
+
+	if (!count) {
+		IR_dprintk(1, "Protocol not specified\n");
+		return -EINVAL;
+	}
+
+	if (ir_dev->props && ir_dev->props->change_protocol) {
+		rc = ir_dev->props->change_protocol(ir_dev->props->priv,
+						    type);
+		if (rc < 0) {
+			IR_dprintk(1, "Error setting protocols to 0x%llx\n",
+				   (long long)type);
+			return -EINVAL;
+		}
+	}
+
+	if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) {
+		spin_lock_irqsave(&ir_dev->rc_tab.lock, flags);
+		ir_dev->rc_tab.ir_type = type;
+		spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags);
+	} else {
+		ir_dev->raw->enabled_protocols = type;
+	}
+
+	IR_dprintk(1, "Current protocol(s): 0x%llx\n",
+		   (long long)type);
+
+	return len;
+}
+
+#define ADD_HOTPLUG_VAR(fmt, val...)					\
+	do {								\
+		int err = add_uevent_var(env, fmt, val);		\
+		if (err)						\
+			return err;					\
+	} while (0)
+
+static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
+{
+	struct ir_input_dev *ir_dev = dev_get_drvdata(device);
+
+	if (ir_dev->rc_tab.name)
+		ADD_HOTPLUG_VAR("NAME=%s", ir_dev->rc_tab.name);
+	if (ir_dev->driver_name)
+		ADD_HOTPLUG_VAR("DRV_NAME=%s", ir_dev->driver_name);
+
+	return 0;
+}
+
+/*
+ * Static device attribute struct with the sysfs attributes for IR's
+ */
+static DEVICE_ATTR(protocols, S_IRUGO | S_IWUSR,
+		   show_protocols, store_protocols);
+
+static struct attribute *rc_dev_attrs[] = {
+	&dev_attr_protocols.attr,
+	NULL,
+};
+
+static struct attribute_group rc_dev_attr_grp = {
+	.attrs	= rc_dev_attrs,
+};
+
+static const struct attribute_group *rc_dev_attr_groups[] = {
+	&rc_dev_attr_grp,
+	NULL
+};
+
+static struct device_type rc_dev_type = {
+	.groups		= rc_dev_attr_groups,
+	.uevent		= rc_dev_uevent,
+};
+
+/**
+ * ir_register_class() - creates the sysfs for /sys/class/rc/rc?
+ * @input_dev:	the struct input_dev descriptor of the device
+ *
+ * This routine is used to register the syfs code for IR class
+ */
+static int ir_register_class(struct input_dev *input_dev)
+{
+	int rc;
+	const char *path;
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+	int devno = find_first_zero_bit(&ir_core_dev_number,
+					IRRCV_NUM_DEVICES);
+
+	if (unlikely(devno < 0))
+		return devno;
+
+	ir_dev->dev.type = &rc_dev_type;
+
+	ir_dev->dev.class = &ir_input_class;
+	ir_dev->dev.parent = input_dev->dev.parent;
+	dev_set_name(&ir_dev->dev, "rc%d", devno);
+	dev_set_drvdata(&ir_dev->dev, ir_dev);
+	rc = device_register(&ir_dev->dev);
+	if (rc)
+		return rc;
+
+
+	input_dev->dev.parent = &ir_dev->dev;
+	rc = input_register_device(input_dev);
+	if (rc < 0) {
+		device_del(&ir_dev->dev);
+		return rc;
+	}
+
+	__module_get(THIS_MODULE);
+
+	path = kobject_get_path(&ir_dev->dev.kobj, GFP_KERNEL);
+	printk(KERN_INFO "%s: %s as %s\n",
+		dev_name(&ir_dev->dev),
+		input_dev->name ? input_dev->name : "Unspecified device",
+		path ? path : "N/A");
+	kfree(path);
+
+	ir_dev->devno = devno;
+	set_bit(devno, &ir_core_dev_number);
+
+	return 0;
+};
+
+/**
+ * ir_unregister_class() - removes the sysfs for sysfs for
+ *			   /sys/class/rc/rc?
+ * @input_dev:	the struct input_dev descriptor of the device
+ *
+ * This routine is used to unregister the syfs code for IR class
+ */
+static void ir_unregister_class(struct input_dev *input_dev)
+{
+	struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
+
+	clear_bit(ir_dev->devno, &ir_core_dev_number);
+	input_unregister_device(input_dev);
+	device_del(&ir_dev->dev);
+
+	module_put(THIS_MODULE);
+}
+
+/*
+ * Init/exit code for the module. Basically, creates/removes /sys/class/rc
+ */
+
+static int __init ir_core_init(void)
+{
+	int rc = class_register(&ir_input_class);
+	if (rc) {
+		printk(KERN_ERR "ir_core: unable to register rc class\n");
+		return rc;
+	}
+
+	/* Initialize/load the decoders/keymap code that will be used */
+	ir_raw_init();
+	ir_register_map(&empty_map);
+
+	return 0;
+}
+
+static void __exit ir_core_exit(void)
+{
+	class_unregister(&ir_input_class);
+	ir_unregister_map(&empty_map);
+}
+
+module_init(ir_core_init);
+module_exit(ir_core_exit);
+
+int ir_core_debug;    /* ir_debug level (0,1,2) */
+EXPORT_SYMBOL_GPL(ir_core_debug);
+module_param_named(debug, ir_core_debug, int, 0644);
+
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/IR/rc-map.c b/drivers/media/IR/rc-map.c
deleted file mode 100644
index 689143f..0000000
--- a/drivers/media/IR/rc-map.c
+++ /dev/null
@@ -1,107 +0,0 @@
-/* ir-raw-event.c - handle IR Pulse/Space event
- *
- * Copyright (C) 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.
- */
-
-#include <media/ir-core.h>
-#include <linux/spinlock.h>
-#include <linux/delay.h>
-
-/* Used to handle IR raw handler extensions */
-static LIST_HEAD(rc_map_list);
-static DEFINE_SPINLOCK(rc_map_lock);
-
-static struct rc_keymap *seek_rc_map(const char *name)
-{
-	struct rc_keymap *map = NULL;
-
-	spin_lock(&rc_map_lock);
-	list_for_each_entry(map, &rc_map_list, list) {
-		if (!strcmp(name, map->map.name)) {
-			spin_unlock(&rc_map_lock);
-			return map;
-		}
-	}
-	spin_unlock(&rc_map_lock);
-
-	return NULL;
-}
-
-struct ir_scancode_table *get_rc_map(const char *name)
-{
-
-	struct rc_keymap *map;
-
-	map = seek_rc_map(name);
-#ifdef MODULE
-	if (!map) {
-		int rc = request_module(name);
-		if (rc < 0) {
-			printk(KERN_ERR "Couldn't load IR keymap %s\n", name);
-			return NULL;
-		}
-		msleep(20);	/* Give some time for IR to register */
-
-		map = seek_rc_map(name);
-	}
-#endif
-	if (!map) {
-		printk(KERN_ERR "IR keymap %s not found\n", name);
-		return NULL;
-	}
-
-	printk(KERN_INFO "Registered IR keymap %s\n", map->map.name);
-
-	return &map->map;
-}
-EXPORT_SYMBOL_GPL(get_rc_map);
-
-int ir_register_map(struct rc_keymap *map)
-{
-	spin_lock(&rc_map_lock);
-	list_add_tail(&map->list, &rc_map_list);
-	spin_unlock(&rc_map_lock);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ir_register_map);
-
-void ir_unregister_map(struct rc_keymap *map)
-{
-	spin_lock(&rc_map_lock);
-	list_del(&map->list);
-	spin_unlock(&rc_map_lock);
-}
-EXPORT_SYMBOL_GPL(ir_unregister_map);
-
-
-static struct ir_scancode empty[] = {
-	{ 0x2a, KEY_COFFEE },
-};
-
-static struct rc_keymap empty_map = {
-	.map = {
-		.scan    = empty,
-		.size    = ARRAY_SIZE(empty),
-		.ir_type = IR_TYPE_UNKNOWN,	/* Legacy IR type */
-		.name    = RC_MAP_EMPTY,
-	}
-};
-
-int ir_rcmap_init(void)
-{
-	return ir_register_map(&empty_map);
-}
-
-void ir_rcmap_cleanup(void)
-{
-	ir_unregister_map(&empty_map);
-}
diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index eb7fddf..7b60868 100644
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -115,7 +115,6 @@ enum raw_event_type {
 
 #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
 
-/* From ir-keytable.c */
 int __ir_input_register(struct input_dev *dev,
 		      const struct ir_scancode_table *ir_codes,
 		      struct ir_dev_props *props,
@@ -159,8 +158,6 @@ void ir_repeat(struct input_dev *dev);
 void ir_keydown(struct input_dev *dev, int scancode, u8 toggle);
 u32 ir_g_keycode_from_table(struct input_dev *input_dev, u32 scancode);
 
-/* From ir-raw-event.c */
-
 struct ir_raw_event {
 	unsigned                        pulse:1;
 	unsigned                        duration:31;