Hi Marcel, Em Sun, 15 Jun 2014 21:59:08 +0200 "Marcel J.E. Mol" <mar...@mesa.nl> escreveu:
> This protocol is found on Dreambox remotes You forgot to add your Signed-off-by: your name <your@email> on this patch. This is a mandatory requirement in order to get it merged. Thanks! Mauro > --- > drivers/media/rc/Kconfig | 10 ++ > drivers/media/rc/Makefile | 1 + > drivers/media/rc/ir-raw.c | 1 + > drivers/media/rc/ir-xmp-decoder.c | 226 > ++++++++++++++++++++++++++++++++++++++ > drivers/media/rc/rc-core-priv.h | 12 ++ > drivers/media/rc/rc-main.c | 1 + > include/media/rc-map.h | 6 +- > 7 files changed, 256 insertions(+), 1 deletion(-) > create mode 100644 drivers/media/rc/ir-xmp-decoder.c > > diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig > index 8fbd377..1a818cd 100644 > --- a/drivers/media/rc/Kconfig > +++ b/drivers/media/rc/Kconfig > @@ -125,6 +125,16 @@ config IR_MCE_KBD_DECODER > Enable this option if you have a Microsoft Remote Keyboard for > Windows Media Center Edition, which you would like to use with > a raw IR receiver in your system. > + > +config IR_XMP_DECODER > + tristate "Enable IR raw decoder for the XMP protocol" > + depends on RC_CORE > + select BITREVERSE > + default y > + > + ---help--- > + Enable this option if you have IR with XMP protocol, and > + if the IR is decoded in software > endif #RC_DECODERS > > menuconfig RC_DEVICES > diff --git a/drivers/media/rc/Makefile b/drivers/media/rc/Makefile > index f8b54ff..7d2a2e7 100644 > --- a/drivers/media/rc/Makefile > +++ b/drivers/media/rc/Makefile > @@ -14,6 +14,7 @@ obj-$(CONFIG_IR_SANYO_DECODER) += ir-sanyo-decoder.o > obj-$(CONFIG_IR_SHARP_DECODER) += ir-sharp-decoder.o > obj-$(CONFIG_IR_MCE_KBD_DECODER) += ir-mce_kbd-decoder.o > obj-$(CONFIG_IR_LIRC_CODEC) += ir-lirc-codec.o > +obj-$(CONFIG_IR_XMP_DECODER) += ir-xmp-decoder.o > > # stand-alone IR receivers/transmitters > obj-$(CONFIG_RC_ATI_REMOTE) += ati_remote.o > diff --git a/drivers/media/rc/ir-raw.c b/drivers/media/rc/ir-raw.c > index 763c9d1..74b065b 100644 > --- a/drivers/media/rc/ir-raw.c > +++ b/drivers/media/rc/ir-raw.c > @@ -355,6 +355,7 @@ void ir_raw_init(void) > load_sharp_decode(); > load_mce_kbd_decode(); > load_lirc_codec(); > + load_xmp_decode(); > > /* If needed, we may later add some init code. In this case, > it is needed to change the CONFIG_MODULE test at rc-core.h > diff --git a/drivers/media/rc/ir-xmp-decoder.c > b/drivers/media/rc/ir-xmp-decoder.c > new file mode 100644 > index 0000000..efc1a0c > --- /dev/null > +++ b/drivers/media/rc/ir-xmp-decoder.c > @@ -0,0 +1,226 @@ > +/* ir-xmp-decoder.c - handle XMP IR Pulse/Space protocol > + * > + * Copyright (C) 2014 by Marcel Mol > + * > + * 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. > + * > + * - Based on info from http://www.hifi-remote.com > + * - Ignore Toggle=9 frames > + * - Ignore XMP-1 XMP-2 difference, always store 16 bit OBC > + */ > + > +#include <linux/bitrev.h> > +#include <linux/module.h> > +#include "rc-core-priv.h" > + > +#define XMP_UNIT 136000 /* ns */ > +#define XMP_LEADER 210000 /* ns */ > +#define XMP_NIBBLE_PREFIX 760000 /* ns */ > +#define XMP_HALFFRAME_SPACE 13800000 /* ns */ > +#define XMP_TRAILER_SPACE 20000000 /* should be 80ms but not all > dureation supliers can go that high */ > + > +enum xmp_state { > + STATE_INACTIVE, > + STATE_LEADER_PULSE, > + STATE_NIBBLE_SPACE, > +}; > + > +/** > + * ir_xmp_decode() - Decode one XMP pulse or space > + * @dev: the struct rc_dev descriptor of the device > + * @duration: the struct ir_raw_event descriptor of the pulse/space > + * > + * This function returns -EINVAL if the pulse violates the state machine > + */ > +static int ir_xmp_decode(struct rc_dev *dev, struct ir_raw_event ev) > +{ > + struct xmp_dec *data = &dev->raw->xmp; > + > + if (!rc_protocols_enabled(dev, RC_BIT_XMP)) > + return 0; > + > + if (!is_timing_event(ev)) { > + if (ev.reset) > + data->state = STATE_INACTIVE; > + return 0; > + } > + > + IR_dprintk(2, "XMP decode started at state %d %d (%uus %s)\n", > + data->state, data->count, TO_US(ev.duration), > TO_STR(ev.pulse)); > + > + switch (data->state) { > + > + case STATE_INACTIVE: > + if (!ev.pulse) > + break; > + > + if (eq_margin(ev.duration, XMP_LEADER, XMP_UNIT / 2)) { > + data->count = 0; > + data->state = STATE_NIBBLE_SPACE; > + } > + > + return 0; > + > + case STATE_LEADER_PULSE: > + if (!ev.pulse) > + break; > + > + if (eq_margin(ev.duration, XMP_LEADER, XMP_UNIT / 2)) > + data->state = STATE_NIBBLE_SPACE; > + > + return 0; > + > + case STATE_NIBBLE_SPACE: > + if (ev.pulse) > + break; > + > + if (geq_margin(ev.duration, XMP_TRAILER_SPACE, > XMP_NIBBLE_PREFIX )) { > + int divider, i; > + u8 addr, subaddr, subaddr2, toggle, oem, obc1, obc2, > sum1, sum2; > + u32 *n; > + u32 scancode; > + > + if (data->count != 16) { > + IR_dprintk(2, "received TRAILER period at index > %d: %u\n", > + data->count, ev.duration); > + data->state = STATE_INACTIVE; > + return -EINVAL; > + } > + > + n = data->durations; > + /* > + * the 4th nibble should be 15 so base the divider on > this > + * to transform durations into nibbles. Substract 2000 > from > + * the divider to compensate for fluctuations in the > signal > + */ > + divider = (n[3] - XMP_NIBBLE_PREFIX) / 15 - 2000; > + if (divider < 50) { > + IR_dprintk(2, "divider to small %d.\n", > divider); > + data->state = STATE_INACTIVE; > + return -EINVAL; > + } > + > + /* convert to nibbles and do some sanity checks */ > + for(i = 0; i < 16; i++) > + n[i] = (n[i] - XMP_NIBBLE_PREFIX) / divider; > + sum1 = (15 + n[0] + n[1] + n[2] + n[3] + > + n[4] + n[5] + n[6] + n[7]) % 16; > + sum2 = (15 + n[8] + n[9] + n[10] + n[11] + > + n[12] + n[13] + n[14] + n[15]) % 16; > + > + if (sum1 != 15 || sum2 != 15) { > + IR_dprintk(2, "checksum errors sum1=0x%X > sum2=0x%X\n", > + sum1, sum2); > + data->state = STATE_INACTIVE; > + return -EINVAL; > + } > + > + subaddr = n[0] << 4 | n[2]; > + subaddr2 = n[8] << 4 | n[11]; > + oem = n[4] << 4 | n[5]; > + addr = n[6] << 4 | n[7]; > + toggle = n[10]; > + obc1 = n[12] << 4 | n[13]; > + obc2 = n[14] << 4 | n[15]; > + if (subaddr != subaddr2) { > + IR_dprintk(2, "subaddress nibbles mismatch > 0x%02X != 0x%02X\n", > + subaddr, subaddr2); > + data->state = STATE_INACTIVE; > + return -EINVAL; > + } > + if (oem != 0x44) > + IR_dprintk(1, "Warning: OEM nibbles 0x%02X. > Expected 0x44\n", > + oem); > + > + scancode = addr << 24 | subaddr << 16 | obc1 << 8 | > obc2; > + IR_dprintk(1, "XMP scancode 0x%06x\n", scancode); > + > + if (toggle == 0) { > + rc_keydown(dev, scancode, 0); > + } > + else { > + rc_repeat(dev); > + IR_dprintk(1, "Repeat last key\n"); > + } > + data->state = STATE_INACTIVE; > + > + return 0; > + > + } > + else if (geq_margin(ev.duration, XMP_HALFFRAME_SPACE, > XMP_NIBBLE_PREFIX)) { > + /* Expect 8 or 16 nibble pulses. 16 in case of 'final' > frame */ > + if (data->count == 16) { > + IR_dprintk(2, "received half frame pulse at > index %d." > + " Probably a final frame key-up event: > %u\n", > + data->count, ev.duration); > + /* TODO: for now go back to half frame position > so > + * trailer can be found and key press can > be handled > + */ > + data->count = 8; > + } > + > + else if (data->count != 8) > + IR_dprintk(2, "received half frame pulse at > index %d: %u\n", > + data->count, ev.duration); > + data->state = STATE_LEADER_PULSE; > + > + return 0; > + > + } > + else if (geq_margin(ev.duration, XMP_NIBBLE_PREFIX, XMP_UNIT)) { > + /* store nibble raw data, decode after trailer */ > + if (data->count == 16) { > + IR_dprintk(2, "to many pulses (%d) ignoring: > %u\n", > + data->count, ev.duration); > + data->state = STATE_INACTIVE; > + return -EINVAL; > + } > + data->durations[data->count] = ev.duration; > + data->count++; > + data->state = STATE_LEADER_PULSE; > + > + return 0; > + > + } > + > + break; > + } > + > + IR_dprintk(1, "XMP decode failed at count %d state %d (%uus %s)\n", > + data->count, data->state, TO_US(ev.duration), > TO_STR(ev.pulse)); > + data->state = STATE_INACTIVE; > + return -EINVAL; > +} > + > +static struct ir_raw_handler xmp_handler = { > + .protocols = RC_BIT_XMP, > + .decode = ir_xmp_decode, > +}; > + > +static int __init ir_xmp_decode_init(void) > +{ > + ir_raw_handler_register(&xmp_handler); > + > + printk(KERN_INFO "IR XMP protocol handler initialized\n"); > + return 0; > +} > + > +static void __exit ir_xmp_decode_exit(void) > +{ > + ir_raw_handler_unregister(&xmp_handler); > +} > + > +module_init(ir_xmp_decode_init); > +module_exit(ir_xmp_decode_exit); > + > +MODULE_LICENSE("GPL"); > +MODULE_AUTHOR("Marcel Mol <mar...@mesa.nl>"); > +MODULE_AUTHOR("MESA Consulting (http://www.mesa.nl)"); > +MODULE_DESCRIPTION("XMP IR protocol decoder"); > diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h > index da536c9..5688d22 100644 > --- a/drivers/media/rc/rc-core-priv.h > +++ b/drivers/media/rc/rc-core-priv.h > @@ -116,6 +116,11 @@ struct ir_raw_event_ctrl { > bool send_timeout_reports; > > } lirc; > + struct xmp_dec { > + int state; > + unsigned count; > + u32 durations[16]; > + } xmp; > }; > > /* macros for IR decoders */ > @@ -231,5 +236,12 @@ static inline void load_mce_kbd_decode(void) { } > static inline void load_lirc_codec(void) { } > #endif > > +/* from ir-xmp-decoder.c */ > +#ifdef CONFIG_IR_XMP_DECODER_MODULE > +#define load_xmp_decode() request_module_nowait("ir-xmp-decoder") > +#else > +static inline void load_xmp_decode(void) { } > +#endif > + > > #endif /* _RC_CORE_PRIV */ > diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c > index 970b93d..9274fce 100644 > --- a/drivers/media/rc/rc-main.c > +++ b/drivers/media/rc/rc-main.c > @@ -794,6 +794,7 @@ static struct { > { RC_BIT_SHARP, "sharp" }, > { RC_BIT_MCE_KBD, "mce_kbd" }, > { RC_BIT_LIRC, "lirc" }, > + { RC_BIT_XMP, "xmp" }, > }; > > /** > diff --git a/include/media/rc-map.h b/include/media/rc-map.h > index e5aa240..4a71eb9 100644 > --- a/include/media/rc-map.h > +++ b/include/media/rc-map.h > @@ -31,6 +31,7 @@ enum rc_type { > RC_TYPE_RC6_6A_32 = 16, /* Philips RC6-6A-32 protocol */ > RC_TYPE_RC6_MCE = 17, /* MCE (Philips RC6-6A-32 subtype) > protocol */ > RC_TYPE_SHARP = 18, /* Sharp protocol */ > + RC_TYPE_XMP = 19, /* XMP protocol */ > }; > > #define RC_BIT_NONE 0 > @@ -53,6 +54,7 @@ enum rc_type { > #define RC_BIT_RC6_6A_32 (1 << RC_TYPE_RC6_6A_32) > #define RC_BIT_RC6_MCE (1 << RC_TYPE_RC6_MCE) > #define RC_BIT_SHARP (1 << RC_TYPE_SHARP) > +#define RC_BIT_XMP (1 << RC_TYPE_XMP) > > #define RC_BIT_ALL (RC_BIT_UNKNOWN | RC_BIT_OTHER | RC_BIT_LIRC | \ > RC_BIT_RC5 | RC_BIT_RC5X | RC_BIT_RC5_SZ | \ > @@ -60,7 +62,9 @@ enum rc_type { > RC_BIT_SONY12 | RC_BIT_SONY15 | RC_BIT_SONY20 | \ > RC_BIT_NEC | RC_BIT_SANYO | RC_BIT_MCE_KBD | \ > RC_BIT_RC6_0 | RC_BIT_RC6_6A_20 | RC_BIT_RC6_6A_24 | \ > - RC_BIT_RC6_6A_32 | RC_BIT_RC6_MCE | RC_BIT_SHARP) > + RC_BIT_RC6_6A_32 | RC_BIT_RC6_MCE | RC_BIT_SHARP | \ > + RC_BIT_XMP) > + > > struct rc_map_table { > u32 scancode; 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