Using the full 32 bits for all kinds of NEC scancodes simplifies rc-core
and the nec decoder without any loss of functionality.
In order to maintain backwards compatibility, some heuristics are added
in rc-main.c to convert scancodes to NEC32 as necessary.
I plan to introduce a different ioctl later which makes the protocol
explicit (and which expects all NEC scancodes to be 32 bit, thereby
removing the need for guesswork).
Signed-off-by: David Härdeman <david@xxxxxxxxxxx>
---
drivers/media/pci/saa7134/saa7134-input.c | 6 +-
drivers/media/rc/img-ir/img-ir-nec.c | 79 ++----------------------
drivers/media/rc/ir-nec-decoder.c | 28 ++-------
drivers/media/rc/keymaps/rc-tivo.c | 95 ++++++++++++++---------------
drivers/media/rc/rc-main.c | 53 ++++++++++++++++
drivers/media/usb/dvb-usb-v2/af9015.c | 22 +------
drivers/media/usb/dvb-usb-v2/af9035.c | 15 +----
drivers/media/usb/dvb-usb-v2/az6007.c | 16 +----
drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 16 +----
drivers/media/usb/dvb-usb/dib0700_core.c | 21 ++----
drivers/media/usb/em28xx/em28xx-input.c | 14 +---
include/media/rc-map.h | 16 ++++-
12 files changed, 147 insertions(+), 234 deletions(-)
diff --git a/drivers/media/pci/saa7134/saa7134-input.c b/drivers/media/pci/saa7134/saa7134-input.c
index 887429b..4ba61ff 100644
--- a/drivers/media/pci/saa7134/saa7134-input.c
+++ b/drivers/media/pci/saa7134/saa7134-input.c
@@ -342,11 +342,9 @@ static int get_key_beholdm6xx(struct IR_i2c *ir, enum rc_type *protocol,
return -EIO;
}
- if (data[9] != (unsigned char)(~data[8]))
- return 0;
-
*protocol = RC_TYPE_NEC;
- *scancode = RC_SCANCODE_NECX(data[11] << 8 | data[10], data[9]);
+ *scancode = RC_SCANCODE_NEC32(data[11] << 24 | data[10] << 16 |
+ data[9] << 8 | data[8]);
*toggle = 0;
return 1;
}
diff --git a/drivers/media/rc/img-ir/img-ir-nec.c b/drivers/media/rc/img-ir/img-ir-nec.c
index ee45795..133ea45 100644
--- a/drivers/media/rc/img-ir/img-ir-nec.c
+++ b/drivers/media/rc/img-ir/img-ir-nec.c
@@ -5,42 +5,20 @@
*/
#include "img-ir-hw.h"
-#include <linux/bitrev.h>
/* Convert NEC data to a scancode */
static int img_ir_nec_scancode(int len, u64 raw, enum rc_type *protocol,
u32 *scancode, u64 enabled_protocols)
{
- unsigned int addr, addr_inv, data, data_inv;
/* a repeat code has no data */
if (!len)
return IMG_IR_REPEATCODE;
+
if (len != 32)
return -EINVAL;
- /* raw encoding: ddDDaaAA */
- addr = (raw >> 0) & 0xff;
- addr_inv = (raw >> 8) & 0xff;
- data = (raw >> 16) & 0xff;
- data_inv = (raw >> 24) & 0xff;
- if ((data_inv ^ data) != 0xff) {
- /* 32-bit NEC (used by Apple and TiVo remotes) */
- /* scan encoding: AAaaDDdd (LSBit first) */
- *scancode = bitrev8(addr) << 24 |
- bitrev8(addr_inv) << 16 |
- bitrev8(data) << 8 |
- bitrev8(data_inv);
- } else if ((addr_inv ^ addr) != 0xff) {
- /* Extended NEC */
- /* scan encoding: AAaaDD */
- *scancode = addr << 16 |
- addr_inv << 8 |
- data;
- } else {
- /* Normal NEC */
- /* scan encoding: AADD */
- *scancode = addr << 8 |
- data;
- }
+
+ /* raw encoding : ddDDaaAA -> scan encoding: AAaaDDdd */
+ *scancode = swab32((u32)raw);
*protocol = RC_TYPE_NEC;
return IMG_IR_SCANCODE;
}
@@ -49,52 +27,9 @@ static int img_ir_nec_scancode(int len, u64 raw, enum rc_type *protocol,
static int img_ir_nec_filter(const struct rc_scancode_filter *in,
struct img_ir_filter *out, u64 protocols)
{
- unsigned int addr, addr_inv, data, data_inv;
- unsigned int addr_m, addr_inv_m, data_m, data_inv_m;
-
- data = in->data & 0xff;
- data_m = in->mask & 0xff;
-
- if ((in->data | in->mask) & 0xff000000) {
- /* 32-bit NEC (used by Apple and TiVo remotes) */
- /* scan encoding: AAaaDDdd (LSBit first) */
- addr = bitrev8(in->data >> 24);
- addr_m = bitrev8(in->mask >> 24);
- addr_inv = bitrev8(in->data >> 16);
- addr_inv_m = bitrev8(in->mask >> 16);
- data = bitrev8(in->data >> 8);
- data_m = bitrev8(in->mask >> 8);
- data_inv = bitrev8(in->data >> 0);
- data_inv_m = bitrev8(in->mask >> 0);
- } else if ((in->data | in->mask) & 0x00ff0000) {
- /* Extended NEC */
- /* scan encoding AAaaDD */
- addr = (in->data >> 16) & 0xff;
- addr_m = (in->mask >> 16) & 0xff;
- addr_inv = (in->data >> 8) & 0xff;
- addr_inv_m = (in->mask >> 8) & 0xff;
- data_inv = data ^ 0xff;
- data_inv_m = data_m;
- } else {
- /* Normal NEC */
- /* scan encoding: AADD */
- addr = (in->data >> 8) & 0xff;
- addr_m = (in->mask >> 8) & 0xff;
- addr_inv = addr ^ 0xff;
- addr_inv_m = addr_m;
- data_inv = data ^ 0xff;
- data_inv_m = data_m;
- }
-
- /* raw encoding: ddDDaaAA */
- out->data = data_inv << 24 |
- data << 16 |
- addr_inv << 8 |
- addr;
- out->mask = data_inv_m << 24 |
- data_m << 16 |
- addr_inv_m << 8 |
- addr_m;
+ /* scan encoding: AAaaDDdd -> raw encoding: ddDDaaAA */
+ out->data = swab32((u32)in->data);
+ out->mask = swab32((u32)in->mask);
return 0;
}
diff --git a/drivers/media/rc/ir-nec-decoder.c b/drivers/media/rc/ir-nec-decoder.c
index c4333d5..798e32b 100644
--- a/drivers/media/rc/ir-nec-decoder.c
+++ b/drivers/media/rc/ir-nec-decoder.c
@@ -50,7 +50,6 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev)
struct nec_dec *data = &dev->raw->nec;
u32 scancode;
u8 address, not_address, command, not_command;
- bool send_32bits = false;
if (!rc_protocols_enabled(dev, RC_BIT_NEC))
return 0;
@@ -163,28 +162,11 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev)
command = bitrev8((data->bits >> 8) & 0xff);
not_command = bitrev8((data->bits >> 0) & 0xff);
- if ((command ^ not_command) != 0xff) {
- IR_dprintk(1, "NEC checksum error: received 0x%08x\n",
- data->bits);
- send_32bits = true;
- }
-
- if (send_32bits) {
- /* NEC transport, but modified protocol, used by at
- * least Apple and TiVo remotes */
- scancode = data->bits;
- IR_dprintk(1, "NEC (modified) scancode 0x%08x\n", scancode);
- } else if ((address ^ not_address) != 0xff) {
- /* Extended NEC */
- scancode = address << 16 |
- not_address << 8 |
- command;
- IR_dprintk(1, "NEC (Ext) scancode 0x%06x\n", scancode);
- } else {
- /* Normal NEC */
- scancode = address << 8 | command;
- IR_dprintk(1, "NEC scancode 0x%04x\n", scancode);
- }
+ scancode = RC_SCANCODE_NEC32(address << 24 |
+ not_address << 16 |
+ command << 8 |
+ not_command);
+ IR_dprintk(1, "NEC scancode 0x%08x\n", scancode);
if (data->is_nec_x)
data->necx_repeat = true;
diff --git a/drivers/media/rc/keymaps/rc-tivo.c b/drivers/media/rc/keymaps/rc-tivo.c
index 454e062..63ed7ad 100644
--- a/drivers/media/rc/keymaps/rc-tivo.c
+++ b/drivers/media/rc/keymaps/rc-tivo.c
@@ -15,62 +15,61 @@
* 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
* 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
- * NEC extended checksums do pass, so the table presently has the intended
- * values and the checksum-passed versions for those keys.
+ * a command/not_command pair, it has a vendor ID of 0x8530, but some keys, the
+ * NEC extended checksums do pass, so the table has the full code for all keys.
*/
static struct rc_map_table tivo[] = {
- { 0xa10c900f, KEY_MEDIA }, /* TiVo Button */
- { 0xa10c0807, KEY_POWER2 }, /* TV Power */
- { 0xa10c8807, KEY_TV }, /* Live TV/Swap */
- { 0xa10c2c03, KEY_VIDEO_NEXT }, /* TV Input */
- { 0xa10cc807, KEY_INFO },
- { 0xa10cfa05, KEY_CYCLEWINDOWS }, /* Window */
- { 0x0085305f, KEY_CYCLEWINDOWS },
- { 0xa10c6c03, KEY_EPG }, /* Guide */
+ { 0x853009f0, KEY_MEDIA }, /* TiVo Button */
+ { 0x853010e0, KEY_POWER2 }, /* TV Power */
+ { 0x853011e0, KEY_TV }, /* Live TV/Swap */
+ { 0x853034c0, KEY_VIDEO_NEXT }, /* TV Input */
+ { 0x853013e0, KEY_INFO },
+ { 0x85305fa0, KEY_CYCLEWINDOWS }, /* Window */
+ { 0x85005f30, KEY_CYCLEWINDOWS },
+ { 0x853036c0, KEY_EPG }, /* Guide */
- { 0xa10c2807, KEY_UP },
- { 0xa10c6807, KEY_DOWN },
- { 0xa10ce807, KEY_LEFT },
- { 0xa10ca807, KEY_RIGHT },
+ { 0x853014e0, KEY_UP },
+ { 0x853016e0, KEY_DOWN },
+ { 0x853017e0, KEY_LEFT },
+ { 0x853015e0, KEY_RIGHT },
- { 0xa10c1807, KEY_SCROLLDOWN }, /* Red Thumbs Down */
- { 0xa10c9807, KEY_SELECT },
- { 0xa10c5807, KEY_SCROLLUP }, /* Green Thumbs Up */
+ { 0x853018e0, KEY_SCROLLDOWN }, /* Red Thumbs Down */
+ { 0x853019e0, KEY_SELECT },
+ { 0x85301ae0, KEY_SCROLLUP }, /* Green Thumbs Up */
- { 0xa10c3807, KEY_VOLUMEUP },
- { 0xa10cb807, KEY_VOLUMEDOWN },
- { 0xa10cd807, KEY_MUTE },
- { 0xa10c040b, KEY_RECORD },
- { 0xa10c7807, KEY_CHANNELUP },
- { 0xa10cf807, KEY_CHANNELDOWN },
- { 0x0085301f, KEY_CHANNELDOWN },
+ { 0x85301ce0, KEY_VOLUMEUP },
+ { 0x85301de0, KEY_VOLUMEDOWN },
+ { 0x85301be0, KEY_MUTE },
+ { 0x853020d0, KEY_RECORD },
+ { 0x85301ee0, KEY_CHANNELUP },
+ { 0x85301fe0, KEY_CHANNELDOWN },
+ { 0x85001f30, KEY_CHANNELDOWN },
- { 0xa10c840b, KEY_PLAY },
- { 0xa10cc40b, KEY_PAUSE },
- { 0xa10ca40b, KEY_SLOW },
- { 0xa10c440b, KEY_REWIND },
- { 0xa10c240b, KEY_FASTFORWARD },
- { 0xa10c640b, KEY_PREVIOUS },
- { 0xa10ce40b, KEY_NEXT }, /* ->| */
+ { 0x853021d0, KEY_PLAY },
+ { 0x853023d0, KEY_PAUSE },
+ { 0x853025d0, KEY_SLOW },
+ { 0x853022d0, KEY_REWIND },
+ { 0x853024d0, KEY_FASTFORWARD },
+ { 0x853026d0, KEY_PREVIOUS },
+ { 0x853027d0, KEY_NEXT }, /* ->| */
- { 0xa10c220d, KEY_ZOOM }, /* Aspect */
- { 0xa10c120d, KEY_STOP },
- { 0xa10c520d, KEY_DVD }, /* DVD Menu */
+ { 0x853044b0, KEY_ZOOM }, /* Aspect */
+ { 0x853048b0, KEY_STOP },
+ { 0x85304ab0, KEY_DVD }, /* DVD Menu */
- { 0xa10c140b, KEY_NUMERIC_1 },
- { 0xa10c940b, KEY_NUMERIC_2 },
- { 0xa10c540b, KEY_NUMERIC_3 },
- { 0xa10cd40b, KEY_NUMERIC_4 },
- { 0xa10c340b, KEY_NUMERIC_5 },
- { 0xa10cb40b, KEY_NUMERIC_6 },
- { 0xa10c740b, KEY_NUMERIC_7 },
- { 0xa10cf40b, KEY_NUMERIC_8 },
- { 0x0085302f, KEY_NUMERIC_8 },
- { 0xa10c0c03, KEY_NUMERIC_9 },
- { 0xa10c8c03, KEY_NUMERIC_0 },
- { 0xa10ccc03, KEY_ENTER },
- { 0xa10c4c03, KEY_CLEAR },
+ { 0x853028d0, KEY_NUMERIC_1 },
+ { 0x853029d0, KEY_NUMERIC_2 },
+ { 0x85302ad0, KEY_NUMERIC_3 },
+ { 0x85302bd0, KEY_NUMERIC_4 },
+ { 0x85302cd0, KEY_NUMERIC_5 },
+ { 0x85302dd0, KEY_NUMERIC_6 },
+ { 0x85302ed0, KEY_NUMERIC_7 },
+ { 0x85302fd0, KEY_NUMERIC_8 },
+ { 0x85002f30, KEY_NUMERIC_8 },
+ { 0x853030c0, KEY_NUMERIC_9 },
+ { 0x853031c0, KEY_NUMERIC_0 },
+ { 0x853033c0, KEY_ENTER },
+ { 0x853032c0, KEY_CLEAR },
};
static struct rc_map_list tivo_map = {
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 26c266b..00a0879 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -316,6 +316,49 @@ static unsigned int ir_establish_scancode(struct rc_dev *dev,
}
/**
+ * guess_protocol() - heuristics to guess the protocol for a scancode
+ * @rdev: the struct rc_dev device descriptor
+ * @return: the guessed RC_TYPE_* protocol
+ *
+ * Internal routine to guess the current IR protocol for legacy ioctls.
+ */
+static inline enum rc_type guess_protocol(struct rc_dev *rdev)
+{
+ struct rc_map *rc_map = &rdev->rc_map;
+
+ if (hweight64(rdev->enabled_protocols[RC_FILTER_NORMAL]) == 1)
+ return rc_bitmap_to_type(rdev->enabled_protocols[RC_FILTER_NORMAL]);
+ else if (hweight64(rdev->allowed_protocols[RC_FILTER_NORMAL]) == 1)
+ return rc_bitmap_to_type(rdev->allowed_protocols[RC_FILTER_NORMAL]);
+ else
+ return rc_map->rc_type;
+}
+
+/**
+ * to_nec32() - helper function to try to convert misc NEC scancodes to NEC32
+ * @orig: original scancode
+ * @return: NEC32 scancode
+ *
+ * This helper routine is used to provide backwards compatibility.
+ */
+static u32 to_nec32(u32 orig)
+{
+ u8 b3 = (u8)(orig >> 16);
+ u8 b2 = (u8)(orig >> 8);
+ u8 b1 = (u8)(orig >> 0);
+
+ if (orig <= 0xffff)
+ /* Plain old NEC */
+ return b2 << 24 | ((u8)~b2) << 16 | b1 << 8 | ((u8)~b1);
+ else if (orig <= 0xffffff)
+ /* NEC extended */
+ return b3 << 24 | b2 << 16 | b1 << 8 | ((u8)~b1);
+ else
+ /* NEC32 */
+ return orig;
+}
+
+/**
* ir_setkeycode() - set a keycode in the scancode->keycode table
* @idev: the struct input_dev device descriptor
* @scancode: the desired scancode
@@ -348,6 +391,9 @@ static int ir_setkeycode(struct input_dev *idev,
if (retval)
goto out;
+ if (guess_protocol(rdev) == RC_TYPE_NEC)
+ scancode = to_nec32(scancode);
+
index = ir_establish_scancode(rdev, rc_map, scancode, true);
if (index >= rc_map->len) {
retval = -ENOMEM;
@@ -388,7 +434,10 @@ static int ir_setkeytable(struct rc_dev *dev,
for (i = 0; i < from->size; i++) {
index = ir_establish_scancode(dev, rc_map,
- from->scan[i].scancode, false);
+ from->rc_type == RC_TYPE_NEC ?
+ to_nec32(from->scan[i].scancode) :
+ from->scan[i].scancode,
+ false);
if (index >= rc_map->len) {
rc = -ENOMEM;
break;
@@ -462,6 +511,8 @@ static int ir_getkeycode(struct input_dev *idev,
if (retval)
goto out;
+ if (guess_protocol(rdev) == RC_TYPE_NEC)
+ scancode = to_nec32(scancode);
index = ir_lookup_by_scancode(rc_map, scancode);
}
diff --git a/drivers/media/usb/dvb-usb-v2/af9015.c b/drivers/media/usb/dvb-usb-v2/af9015.c
index 5ca738a..8776eaf 100644
--- a/drivers/media/usb/dvb-usb-v2/af9015.c
+++ b/drivers/media/usb/dvb-usb-v2/af9015.c
@@ -1230,24 +1230,10 @@ static int af9015_rc_query(struct dvb_usb_device *d)
/* Remember this key */
memcpy(state->rc_last, &buf[12], 4);
- if (buf[14] == (u8) ~buf[15]) {
- if (buf[12] == (u8) ~buf[13]) {
- /* NEC */
- state->rc_keycode = RC_SCANCODE_NEC(buf[12],
- buf[14]);
- } else {
- /* NEC extended*/
- state->rc_keycode = RC_SCANCODE_NECX(buf[12] << 8 |
- buf[13],
- buf[14]);
- }
- } else {
- /* 32 bit NEC */
- state->rc_keycode = RC_SCANCODE_NEC32(buf[12] << 24 |
- buf[13] << 16 |
- buf[14] << 8 |
- buf[15]);
- }
+ state->rc_keycode = RC_SCANCODE_NEC32(buf[12] << 24 |
+ buf[13] << 16 |
+ buf[14] << 8 |
+ buf[15]);
rc_keydown(d->rc_dev, RC_TYPE_NEC, state->rc_keycode, 0);
} else {
dev_dbg(&d->udev->dev, "%s: no key press\n", __func__);
diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c
index 3bfba13..6bc9693 100644
--- a/drivers/media/usb/dvb-usb-v2/af9035.c
+++ b/drivers/media/usb/dvb-usb-v2/af9035.c
@@ -1284,19 +1284,8 @@ static int af9035_rc_query(struct dvb_usb_device *d)
else if (ret < 0)
goto err;
- if ((buf[2] + buf[3]) == 0xff) {
- if ((buf[0] + buf[1]) == 0xff) {
- /* NEC standard 16bit */
- key = RC_SCANCODE_NEC(buf[0], buf[2]);
- } else {
- /* NEC extended 24bit */
- key = RC_SCANCODE_NECX(buf[0] << 8 | buf[1], buf[2]);
- }
- } else {
- /* NEC full code 32bit */
- key = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
- buf[2] << 8 | buf[3]);
- }
+ key = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
+ buf[2] << 8 | buf[3]);
dev_dbg(&d->udev->dev, "%s: %*ph\n", __func__, 4, buf);
diff --git a/drivers/media/usb/dvb-usb-v2/az6007.c b/drivers/media/usb/dvb-usb-v2/az6007.c
index 935dbaa..7e38278 100644
--- a/drivers/media/usb/dvb-usb-v2/az6007.c
+++ b/drivers/media/usb/dvb-usb-v2/az6007.c
@@ -214,18 +214,10 @@ static int az6007_rc_query(struct dvb_usb_device *d)
if (st->data[1] == 0x44)
return 0;
- if ((st->data[3] ^ st->data[4]) == 0xff) {
- if ((st->data[1] ^ st->data[2]) == 0xff)
- code = RC_SCANCODE_NEC(st->data[1], st->data[3]);
- else
- code = RC_SCANCODE_NECX(st->data[1] << 8 | st->data[2],
- st->data[3]);
- } else {
- code = RC_SCANCODE_NEC32(st->data[1] << 24 |
- st->data[2] << 16 |
- st->data[3] << 8 |
- st->data[4]);
- }
+ code = RC_SCANCODE_NEC32(st->data[1] << 24 |
+ st->data[2] << 16 |
+ st->data[3] << 8 |
+ st->data[4]);
rc_keydown(d->rc_dev, RC_TYPE_NEC, code, st->data[5]);
diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
index 574f4ee..45c77b1 100644
--- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
+++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c
@@ -1246,20 +1246,8 @@ static int rtl2831u_rc_query(struct dvb_usb_device *d)
goto err;
if (buf[4] & 0x01) {
- if (buf[2] == (u8) ~buf[3]) {
- if (buf[0] == (u8) ~buf[1]) {
- /* NEC standard (16 bit) */
- rc_code = RC_SCANCODE_NEC(buf[0], buf[2]);
- } else {
- /* NEC extended (24 bit) */
- rc_code = RC_SCANCODE_NECX(buf[0] << 8 | buf[1],
- buf[2]);
- }
- } else {
- /* NEC full (32 bit) */
- rc_code = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
- buf[2] << 8 | buf[3]);
- }
+ rc_code = RC_SCANCODE_NEC32(buf[0] << 24 | buf[1] << 16 |
+ buf[2] << 8 | buf[3]);
rc_keydown(d->rc_dev, RC_TYPE_NEC, rc_code, 0);
diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
index 0d881b9..d7b7932 100644
--- a/drivers/media/usb/dvb-usb/dib0700_core.c
+++ b/drivers/media/usb/dvb-usb/dib0700_core.c
@@ -715,22 +715,11 @@ static void dib0700_rc_urb_completion(struct urb *purb)
break;
}
- if ((poll_reply->data ^ poll_reply->not_data) != 0xff) {
- deb_data("NEC32 protocol\n");
- scancode = RC_SCANCODE_NEC32(poll_reply->system << 24 |
- poll_reply->not_system << 16 |
- poll_reply->data << 8 |
- poll_reply->not_data);
- } else if ((poll_reply->system ^ poll_reply->not_system) != 0xff) {
- deb_data("NEC extended protocol\n");
- scancode = RC_SCANCODE_NECX(poll_reply->system << 8 |
- poll_reply->not_system,
- poll_reply->data);
- } else {
- deb_data("NEC normal protocol\n");
- scancode = RC_SCANCODE_NEC(poll_reply->system,
- poll_reply->data);
- }
+ deb_data("NEC protocol\n");
+ scancode = RC_SCANCODE_NEC32(poll_reply->system << 24 |
+ poll_reply->not_system << 16 |
+ poll_reply->data << 8 |
+ poll_reply->not_data);
break;
default:
diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c
index 014888f..4bbd8e4 100644
--- a/drivers/media/usb/em28xx/em28xx-input.c
+++ b/drivers/media/usb/em28xx/em28xx-input.c
@@ -261,16 +261,10 @@ static int em2874_polling_getkey(struct em28xx_IR *ir,
case RC_BIT_NEC:
poll_result->protocol = RC_TYPE_RC5;
poll_result->scancode = msg[1] << 8 | msg[2];
- if ((msg[3] ^ msg[4]) != 0xff) /* 32 bits NEC */
- poll_result->scancode = RC_SCANCODE_NEC32((msg[1] << 24) |
- (msg[2] << 16) |
- (msg[3] << 8) |
- (msg[4]));
- else if ((msg[1] ^ msg[2]) != 0xff) /* 24 bits NEC */
- poll_result->scancode = RC_SCANCODE_NECX(msg[1] << 8 |
- msg[2], msg[3]);
- else /* Normal NEC */
- poll_result->scancode = RC_SCANCODE_NEC(msg[1], msg[3]);
+ poll_result->scancode = RC_SCANCODE_NEC32((msg[1] << 24) |
+ (msg[2] << 16) |
+ (msg[3] << 8) |
+ (msg[4]));
break;
case RC_BIT_RC6_0:
diff --git a/include/media/rc-map.h b/include/media/rc-map.h
index 894c7e4..2e6c659 100644
--- a/include/media/rc-map.h
+++ b/include/media/rc-map.h
@@ -33,6 +33,8 @@ enum rc_type {
RC_TYPE_SHARP = 18, /* Sharp protocol */
};
+#define rc_bitmap_to_type(x) fls64(x)
+
#define RC_BIT_NONE 0
#define RC_BIT_UNKNOWN (1 << RC_TYPE_UNKNOWN)
#define RC_BIT_OTHER (1 << RC_TYPE_OTHER)
@@ -64,13 +66,21 @@ enum rc_type {
#define RC_SCANCODE_UNKNOWN(x) (x)
#define RC_SCANCODE_OTHER(x) (x)
-#define RC_SCANCODE_NEC(addr, cmd) (((addr) << 8) | (cmd))
-#define RC_SCANCODE_NECX(addr, cmd) (((addr) << 8) | (cmd))
-#define RC_SCANCODE_NEC32(data) ((data) & 0xffffffff)
#define RC_SCANCODE_RC5(sys, cmd) (((sys) << 8) | (cmd))
#define RC_SCANCODE_RC5_SZ(sys, cmd) (((sys) << 8) | (cmd))
#define RC_SCANCODE_RC6_0(sys, cmd) (((sys) << 8) | (cmd))
#define RC_SCANCODE_RC6_6A(vendor, sys, cmd) (((vendor) << 16) | ((sys) << 8) | (cmd))
+#define RC_SCANCODE_NEC(addr, cmd) \
+ ((( (addr) & 0xff) << 24) | \
+ ((~(addr) & 0xff) << 16) | \
+ (( (cmd) & 0xff) << 8 ) | \
+ ((~(cmd) & 0xff) << 0 ))
+#define RC_SCANCODE_NECX(addr, cmd) \
+ ((( (addr) & 0xffff) << 16) | \
+ (( (cmd) & 0x00ff) << 8) | \
+ ((~(cmd) & 0x00ff) << 0))
+#define RC_SCANCODE_NEC32(data) ((data) & 0xffffffff)
+
struct rc_map_table {
u32 scancode;
--
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