This protocol is found on Sanyo/Aiwa remotes.
Tested with an Aiwa RC-7AS06 remote control.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
---
drivers/media/rc/Kconfig | 10 ++
drivers/media/rc/Makefile | 1 +
drivers/media/rc/ir-raw.c | 1 +
drivers/media/rc/ir-sanyo-decoder.c | 204 +++++++++++++++++++++++++++++++++++
drivers/media/rc/rc-core-priv.h | 12 ++
drivers/media/rc/rc-main.c | 1 +
include/media/rc-map.h | 8 +-
7 files changed, 234 insertions(+), 3 deletions(-)
create mode 100644 drivers/media/rc/ir-sanyo-decoder.c
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index aeb7f43..4df4aff 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -87,6 +87,16 @@ config IR_RC5_SZ_DECODER
uses an IR protocol that is almost standard RC-5, but not quite,
as it uses an additional bit).
+config IR_SANYO_DECODER
+ tristate "Enable IR raw decoder for the Sanyo protocol"
+ depends on RC_CORE
+ default y
+
+ ---help---
+ Enable this option if you have an infrared remote control which
+ uses the Sanyo protocol (Sanyo, Aiwa, Chinon remotes),
+ and you need software decoding support.
+
config IR_MCE_KBD_DECODER
tristate "Enable IR raw decoder for the MCE keyboard/mouse protocol"
depends on RC_CORE
diff --git a/drivers/media/rc/Makefile b/drivers/media/rc/Makefile
index 2156e78..fb3dee2 100644
--- a/drivers/media/rc/Makefile
+++ b/drivers/media/rc/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_IR_RC6_DECODER) += ir-rc6-decoder.o
obj-$(CONFIG_IR_JVC_DECODER) += ir-jvc-decoder.o
obj-$(CONFIG_IR_SONY_DECODER) += ir-sony-decoder.o
obj-$(CONFIG_IR_RC5_SZ_DECODER) += ir-rc5-sz-decoder.o
+obj-$(CONFIG_IR_SANYO_DECODER) += ir-sanyo-decoder.o
obj-$(CONFIG_IR_MCE_KBD_DECODER) += ir-mce_kbd-decoder.o
obj-$(CONFIG_IR_LIRC_CODEC) += ir-lirc-codec.o
diff --git a/drivers/media/rc/ir-raw.c b/drivers/media/rc/ir-raw.c
index 27808bb..9e841f4 100644
--- a/drivers/media/rc/ir-raw.c
+++ b/drivers/media/rc/ir-raw.c
@@ -355,6 +355,7 @@ static void init_decoders(struct work_struct *work)
load_rc6_decode();
load_jvc_decode();
load_sony_decode();
+ load_sanyo_decode();
load_mce_kbd_decode();
load_lirc_codec();
diff --git a/drivers/media/rc/ir-sanyo-decoder.c b/drivers/media/rc/ir-sanyo-decoder.c
new file mode 100644
index 0000000..1646730
--- /dev/null
+++ b/drivers/media/rc/ir-sanyo-decoder.c
@@ -0,0 +1,204 @@
+/* ir-sanyo-decoder.c - handle SANYO IR Pulse/Space protocol
+ *
+ * Copyright (C) 2011 by Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
+ *
+ * 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.
+ *
+ * This protocol uses the NEC protocol timings. However, data is formatted as:
+ * 13 bits Custom Code
+ * 13 bits NOT(Custom Code)
+ * 8 bits Key data
+ * 8 bits NOT(Key data)
+ *
+ * According with LIRC, this protocol is used on Sanyo, Aiwa and Chinon
+ * Information for this protocol is available at the Sanyo LC7461 datasheet.
+ */
+
+#include <linux/bitrev.h>
+#include "rc-core-priv.h"
+
+#define SANYO_NBITS (13+13+8+8)
+#define SANYO_UNIT 562500 /* ns */
+#define SANYO_HEADER_PULSE (16 * SANYO_UNIT)
+#define SANYO_HEADER_SPACE (8 * SANYO_UNIT)
+#define SANYO_BIT_PULSE (1 * SANYO_UNIT)
+#define SANYO_BIT_0_SPACE (1 * SANYO_UNIT)
+#define SANYO_BIT_1_SPACE (3 * SANYO_UNIT)
+#define SANYO_REPEAT_SPACE (150 * SANYO_UNIT)
+#define SANYO_TRAILER_PULSE (1 * SANYO_UNIT)
+#define SANYO_TRAILER_SPACE (10 * SANYO_UNIT) /* in fact, 42 */
+
+enum sanyo_state {
+ STATE_INACTIVE,
+ STATE_HEADER_SPACE,
+ STATE_BIT_PULSE,
+ STATE_BIT_SPACE,
+ STATE_TRAILER_PULSE,
+ STATE_TRAILER_SPACE,
+};
+
+/**
+ * ir_sanyo_decode() - Decode one SANYO 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_sanyo_decode(struct rc_dev *dev, struct ir_raw_event ev)
+{
+ struct sanyo_dec *data = &dev->raw->sanyo;
+ u32 scancode;
+ u8 address, not_address, command, not_command;
+
+ if (!(dev->raw->enabled_protocols & RC_TYPE_SANYO))
+ return 0;
+
+ if (!is_timing_event(ev)) {
+ if (ev.reset) {
+ IR_dprintk(1, "SANYO event reset received. reset to state 0\n");
+ data->state = STATE_INACTIVE;
+ }
+ return 0;
+ }
+
+ IR_dprintk(2, "SANYO decode started at state %d (%uus %s)\n",
+ data->state, TO_US(ev.duration), TO_STR(ev.pulse));
+
+ switch (data->state) {
+
+ case STATE_INACTIVE:
+ if (!ev.pulse)
+ break;
+
+ if (eq_margin(ev.duration, SANYO_HEADER_PULSE, SANYO_UNIT / 2)) {
+ data->count = 0;
+ data->state = STATE_HEADER_SPACE;
+ return 0;
+ }
+ break;
+
+
+ case STATE_HEADER_SPACE:
+ if (ev.pulse)
+ break;
+
+ if (eq_margin(ev.duration, SANYO_HEADER_SPACE, SANYO_UNIT / 2)) {
+ data->state = STATE_BIT_PULSE;
+ return 0;
+ }
+
+ break;
+
+ case STATE_BIT_PULSE:
+ if (!ev.pulse)
+ break;
+
+ if (!eq_margin(ev.duration, SANYO_BIT_PULSE, SANYO_UNIT / 2))
+ break;
+
+ data->state = STATE_BIT_SPACE;
+ return 0;
+
+ case STATE_BIT_SPACE:
+ if (ev.pulse)
+ break;
+
+ if (!data->count && geq_margin(ev.duration, SANYO_REPEAT_SPACE, SANYO_UNIT / 2)) {
+ if (!dev->keypressed) {
+ IR_dprintk(1, "SANYO discarding last key repeat: event after key up\n");
+ } else {
+ rc_repeat(dev);
+ IR_dprintk(1, "SANYO repeat last key\n");
+ data->state = STATE_INACTIVE;
+ }
+ return 0;
+ }
+
+ data->bits <<= 1;
+ if (eq_margin(ev.duration, SANYO_BIT_1_SPACE, SANYO_UNIT / 2))
+ data->bits |= 1;
+ else if (!eq_margin(ev.duration, SANYO_BIT_0_SPACE, SANYO_UNIT / 2))
+ break;
+ data->count++;
+
+ if (data->count == SANYO_NBITS)
+ data->state = STATE_TRAILER_PULSE;
+ else
+ data->state = STATE_BIT_PULSE;
+
+ return 0;
+
+ case STATE_TRAILER_PULSE:
+ if (!ev.pulse)
+ break;
+
+ if (!eq_margin(ev.duration, SANYO_TRAILER_PULSE, SANYO_UNIT / 2))
+ break;
+
+ data->state = STATE_TRAILER_SPACE;
+ return 0;
+
+ case STATE_TRAILER_SPACE:
+ if (ev.pulse)
+ break;
+
+ if (!geq_margin(ev.duration, SANYO_TRAILER_SPACE, SANYO_UNIT / 2))
+ break;
+
+ address = bitrev16((data->bits >> 29) & 0x1fff) >> 3;
+ not_address = bitrev16((data->bits >> 16) & 0x1fff) >> 3;
+ command = bitrev8((data->bits >> 8) & 0xff);
+ not_command = bitrev8((data->bits >> 0) & 0xff);
+
+ if ((command ^ not_command) != 0xff) {
+ IR_dprintk(1, "SANYO checksum error: received 0x%08Lx\n",
+ data->bits);
+ data->state = STATE_INACTIVE;
+ return 0;
+ }
+
+ scancode = address << 8 | command;
+ IR_dprintk(1, "SANYO scancode: 0x%06x\n", scancode);
+ rc_keydown(dev, scancode, 0);
+ data->state = STATE_INACTIVE;
+ return 0;
+ }
+
+ IR_dprintk(1, "SANYO 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 sanyo_handler = {
+ .protocols = RC_TYPE_SANYO,
+ .decode = ir_sanyo_decode,
+};
+
+static int __init ir_sanyo_decode_init(void)
+{
+ ir_raw_handler_register(&sanyo_handler);
+
+ printk(KERN_INFO "IR SANYO protocol handler initialized\n");
+ return 0;
+}
+
+static void __exit ir_sanyo_decode_exit(void)
+{
+ ir_raw_handler_unregister(&sanyo_handler);
+}
+
+module_init(ir_sanyo_decode_init);
+module_exit(ir_sanyo_decode_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>");
+MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
+MODULE_DESCRIPTION("SANYO IR protocol decoder");
diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h
index c6ca870..b72f858 100644
--- a/drivers/media/rc/rc-core-priv.h
+++ b/drivers/media/rc/rc-core-priv.h
@@ -84,6 +84,11 @@ struct ir_raw_event_ctrl {
unsigned count;
unsigned wanted_bits;
} rc5_sz;
+ struct sanyo_dec {
+ int state;
+ unsigned count;
+ u64 bits;
+ } sanyo;
struct mce_kbd_dec {
struct input_dev *idev;
struct timer_list rx_timeout;
@@ -193,6 +198,13 @@ static inline void load_jvc_decode(void) { }
static inline void load_sony_decode(void) { }
#endif
+/* from ir-sanyo-decoder.c */
+#ifdef CONFIG_IR_SANYO_DECODER_MODULE
+#define load_sanyo_decode() request_module("ir-sanyo-decoder")
+#else
+static inline void load_sanyo_decode(void) { }
+#endif
+
/* from ir-mce_kbd-decoder.c */
#ifdef CONFIG_IR_MCE_KBD_DECODER_MODULE
#define load_mce_kbd_decode() request_module("ir-mce_kbd-decoder")
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 666d4bb..35e2fcf 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -735,6 +735,7 @@ static struct {
{ RC_TYPE_JVC, "jvc" },
{ RC_TYPE_SONY, "sony" },
{ RC_TYPE_RC5_SZ, "rc-5-sz" },
+ { RC_TYPE_SANYO, "sanyo" },
{ RC_TYPE_MCE_KBD, "mce_kbd" },
{ RC_TYPE_LIRC, "lirc" },
{ RC_TYPE_OTHER, "other" },
diff --git a/include/media/rc-map.h b/include/media/rc-map.h
index 26a3bd0..183d701 100644
--- a/include/media/rc-map.h
+++ b/include/media/rc-map.h
@@ -18,13 +18,15 @@
#define RC_TYPE_JVC (1 << 3) /* JVC protocol */
#define RC_TYPE_SONY (1 << 4) /* Sony12/15/20 protocol */
#define RC_TYPE_RC5_SZ (1 << 5) /* RC5 variant used by Streamzap */
+#define RC_TYPE_SANYO (1 << 6) /* Sanyo protocol */
#define RC_TYPE_MCE_KBD (1 << 29) /* RC6-ish MCE keyboard/mouse */
#define RC_TYPE_LIRC (1 << 30) /* Pass raw IR to lirc userspace */
#define RC_TYPE_OTHER (1u << 31)
-#define RC_TYPE_ALL (RC_TYPE_RC5 | RC_TYPE_NEC | RC_TYPE_RC6 | \
- RC_TYPE_JVC | RC_TYPE_SONY | RC_TYPE_LIRC | \
- RC_TYPE_RC5_SZ | RC_TYPE_MCE_KBD | RC_TYPE_OTHER)
+#define RC_TYPE_ALL (RC_TYPE_RC5 | RC_TYPE_NEC | RC_TYPE_RC6 | \
+ RC_TYPE_JVC | RC_TYPE_SONY | RC_TYPE_LIRC | \
+ RC_TYPE_RC5_SZ | RC_TYPE_SANYO | RC_TYPE_MCE_KBD | \
+ RC_TYPE_OTHER)
struct rc_map_table {
u32 scancode;
--
1.7.7.1
--
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