diff options
Diffstat (limited to 'drivers/media/rc/img-ir/img-ir-nec.c')
| -rw-r--r-- | drivers/media/rc/img-ir/img-ir-nec.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/media/rc/img-ir/img-ir-nec.c b/drivers/media/rc/img-ir/img-ir-nec.c index 09314933ea08..044fd42b22a0 100644 --- a/drivers/media/rc/img-ir/img-ir-nec.c +++ b/drivers/media/rc/img-ir/img-ir-nec.c @@ -11,6 +11,7 @@ #include "img-ir-hw.h" #include <linux/bitrev.h> +#include <linux/log2.h> /* Convert NEC data to a scancode */ static int img_ir_nec_scancode(int len, u64 raw, u64 enabled_protocols, @@ -62,7 +63,23 @@ static int img_ir_nec_filter(const struct rc_scancode_filter *in, data = in->data & 0xff; data_m = in->mask & 0xff; - if ((in->data | in->mask) & 0xff000000) { + protocols &= RC_BIT_NEC | RC_BIT_NECX | RC_BIT_NEC32; + + /* + * If only one bit is set, we were requested to do an exact + * protocol. This should be the case for wakeup filters; for + * normal filters, guess the protocol from the scancode. + */ + if (!is_power_of_2(protocols)) { + if ((in->data | in->mask) & 0xff000000) + protocols = RC_BIT_NEC32; + else if ((in->data | in->mask) & 0x00ff0000) + protocols = RC_BIT_NECX; + else + protocols = RC_BIT_NEC; + } + + if (protocols == RC_BIT_NEC32) { /* 32-bit NEC (used by Apple and TiVo remotes) */ /* scan encoding: as transmitted, MSBit = first received bit */ addr = bitrev8(in->data >> 24); @@ -73,7 +90,7 @@ static int img_ir_nec_filter(const struct rc_scancode_filter *in, 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) { + } else if (protocols == RC_BIT_NECX) { /* Extended NEC */ /* scan encoding AAaaDD */ addr = (in->data >> 16) & 0xff; |