Commit 18bc1744 authored by James Hogan's avatar James Hogan Committed by Mauro Carvalho Chehab

[media] media: rc: change 32bit NEC scancode format

Change 32bit NEC scancode format (used by Apple and TiVo remotes) to
encode the data with the correct bit order. Previously the raw bits were
used without being bit reversed, now each 16bit half is bit reversed
compared to before.

So for the raw NEC data:
  (LSB/First) 0xAAaaCCcc (MSB/Last)
(where traditionally AA=address, aa=~address, CC=command, cc=~command)

We now generate the scancodes:
  (MSB) 0x0000AACC (LSB) (normal NEC)
  (MSB) 0x00AAaaCC (LSB) (extended NEC, address check wrong)
  (MSB) 0xaaAAccCC (LSB) (32-bit NEC, command check wrong)

Note that the address byte order in 32-bit NEC scancodes is different to
that of the extended NEC scancodes. I chose this way as it maintains the
order of the bits in the address/command fields, and CC is clearly
intended to be the LSB of the command if the TiVo codes are anything to
go by so it makes sense for AA to also be the LSB.

The TiVo keymap is updated accordingly.
Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
Cc: Mauro Carvalho Chehab <m.chehab@samsung.com>
Cc: Jarod Wilson <jarod@redhat.com>
Cc: linux-media@vger.kernel.org
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 00942d1a
...@@ -172,7 +172,10 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev) ...@@ -172,7 +172,10 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev)
if (send_32bits) { if (send_32bits) {
/* NEC transport, but modified protocol, used by at /* NEC transport, but modified protocol, used by at
* least Apple and TiVo remotes */ * least Apple and TiVo remotes */
scancode = data->bits; scancode = not_address << 24 |
address << 16 |
not_command << 8 |
command;
IR_dprintk(1, "NEC (modified) scancode 0x%08x\n", scancode); IR_dprintk(1, "NEC (modified) scancode 0x%08x\n", scancode);
} else if ((address ^ not_address) != 0xff) { } else if ((address ^ not_address) != 0xff) {
/* Extended NEC */ /* Extended NEC */
......
...@@ -15,62 +15,62 @@ ...@@ -15,62 +15,62 @@
* Initial mapping is for the TiVo remote included in the Nero LiquidTV bundle, * Initial mapping is for the TiVo remote included in the Nero LiquidTV bundle,
* which also ships with a TiVo-branded IR transceiver, supported by the mceusb * which also ships with a TiVo-branded IR transceiver, supported by the mceusb
* driver. Note that the remote uses an NEC-ish protocol, but instead of having * driver. Note that the remote uses an NEC-ish protocol, but instead of having
* a command/not_command pair, it has a vendor ID of 0xa10c, but some keys, the * a command/not_command pair, it has a vendor ID of 0x3085, but some keys, the
* NEC extended checksums do pass, so the table presently has the intended * NEC extended checksums do pass, so the table presently has the intended
* values and the checksum-passed versions for those keys. * values and the checksum-passed versions for those keys.
*/ */
static struct rc_map_table tivo[] = { static struct rc_map_table tivo[] = {
{ 0xa10c900f, KEY_MEDIA }, /* TiVo Button */ { 0x3085f009, KEY_MEDIA }, /* TiVo Button */
{ 0xa10c0807, KEY_POWER2 }, /* TV Power */ { 0x3085e010, KEY_POWER2 }, /* TV Power */
{ 0xa10c8807, KEY_TV }, /* Live TV/Swap */ { 0x3085e011, KEY_TV }, /* Live TV/Swap */
{ 0xa10c2c03, KEY_VIDEO_NEXT }, /* TV Input */ { 0x3085c034, KEY_VIDEO_NEXT }, /* TV Input */
{ 0xa10cc807, KEY_INFO }, { 0x3085e013, KEY_INFO },
{ 0xa10cfa05, KEY_CYCLEWINDOWS }, /* Window */ { 0x3085a05f, KEY_CYCLEWINDOWS }, /* Window */
{ 0x0085305f, KEY_CYCLEWINDOWS }, { 0x0085305f, KEY_CYCLEWINDOWS },
{ 0xa10c6c03, KEY_EPG }, /* Guide */ { 0x3085c036, KEY_EPG }, /* Guide */
{ 0xa10c2807, KEY_UP }, { 0x3085e014, KEY_UP },
{ 0xa10c6807, KEY_DOWN }, { 0x3085e016, KEY_DOWN },
{ 0xa10ce807, KEY_LEFT }, { 0x3085e017, KEY_LEFT },
{ 0xa10ca807, KEY_RIGHT }, { 0x3085e015, KEY_RIGHT },
{ 0xa10c1807, KEY_SCROLLDOWN }, /* Red Thumbs Down */ { 0x3085e018, KEY_SCROLLDOWN }, /* Red Thumbs Down */
{ 0xa10c9807, KEY_SELECT }, { 0x3085e019, KEY_SELECT },
{ 0xa10c5807, KEY_SCROLLUP }, /* Green Thumbs Up */ { 0x3085e01a, KEY_SCROLLUP }, /* Green Thumbs Up */
{ 0xa10c3807, KEY_VOLUMEUP }, { 0x3085e01c, KEY_VOLUMEUP },
{ 0xa10cb807, KEY_VOLUMEDOWN }, { 0x3085e01d, KEY_VOLUMEDOWN },
{ 0xa10cd807, KEY_MUTE }, { 0x3085e01b, KEY_MUTE },
{ 0xa10c040b, KEY_RECORD }, { 0x3085d020, KEY_RECORD },
{ 0xa10c7807, KEY_CHANNELUP }, { 0x3085e01e, KEY_CHANNELUP },
{ 0xa10cf807, KEY_CHANNELDOWN }, { 0x3085e01f, KEY_CHANNELDOWN },
{ 0x0085301f, KEY_CHANNELDOWN }, { 0x0085301f, KEY_CHANNELDOWN },
{ 0xa10c840b, KEY_PLAY }, { 0x3085d021, KEY_PLAY },
{ 0xa10cc40b, KEY_PAUSE }, { 0x3085d023, KEY_PAUSE },
{ 0xa10ca40b, KEY_SLOW }, { 0x3085d025, KEY_SLOW },
{ 0xa10c440b, KEY_REWIND }, { 0x3085d022, KEY_REWIND },
{ 0xa10c240b, KEY_FASTFORWARD }, { 0x3085d024, KEY_FASTFORWARD },
{ 0xa10c640b, KEY_PREVIOUS }, { 0x3085d026, KEY_PREVIOUS },
{ 0xa10ce40b, KEY_NEXT }, /* ->| */ { 0x3085d027, KEY_NEXT }, /* ->| */
{ 0xa10c220d, KEY_ZOOM }, /* Aspect */ { 0x3085b044, KEY_ZOOM }, /* Aspect */
{ 0xa10c120d, KEY_STOP }, { 0x3085b048, KEY_STOP },
{ 0xa10c520d, KEY_DVD }, /* DVD Menu */ { 0x3085b04a, KEY_DVD }, /* DVD Menu */
{ 0xa10c140b, KEY_NUMERIC_1 }, { 0x3085d028, KEY_NUMERIC_1 },
{ 0xa10c940b, KEY_NUMERIC_2 }, { 0x3085d029, KEY_NUMERIC_2 },
{ 0xa10c540b, KEY_NUMERIC_3 }, { 0x3085d02a, KEY_NUMERIC_3 },
{ 0xa10cd40b, KEY_NUMERIC_4 }, { 0x3085d02b, KEY_NUMERIC_4 },
{ 0xa10c340b, KEY_NUMERIC_5 }, { 0x3085d02c, KEY_NUMERIC_5 },
{ 0xa10cb40b, KEY_NUMERIC_6 }, { 0x3085d02d, KEY_NUMERIC_6 },
{ 0xa10c740b, KEY_NUMERIC_7 }, { 0x3085d02e, KEY_NUMERIC_7 },
{ 0xa10cf40b, KEY_NUMERIC_8 }, { 0x3085d02f, KEY_NUMERIC_8 },
{ 0x0085302f, KEY_NUMERIC_8 }, { 0x0085302f, KEY_NUMERIC_8 },
{ 0xa10c0c03, KEY_NUMERIC_9 }, { 0x3085c030, KEY_NUMERIC_9 },
{ 0xa10c8c03, KEY_NUMERIC_0 }, { 0x3085c031, KEY_NUMERIC_0 },
{ 0xa10ccc03, KEY_ENTER }, { 0x3085c033, KEY_ENTER },
{ 0xa10c4c03, KEY_CLEAR }, { 0x3085c032, KEY_CLEAR },
}; };
static struct rc_map_list tivo_map = { static struct rc_map_list tivo_map = {
......
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