From: Kamil Debski <ka...@wypas.org>

Add handling of remote control events coming from the HDMI CEC bus.
This patch includes a new keymap that maps values found in the CEC
messages to the keys pressed and released. Also, a new protocol has
been added to the core.

Signed-off-by: Kamil Debski <ka...@wypas.org>
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
 drivers/media/rc/keymaps/Makefile |   1 +
 drivers/media/rc/keymaps/rc-cec.c | 144 ++++++++++++++++++++++++++++++++++++++
 drivers/media/rc/rc-main.c        |   1 +
 include/media/rc-core.h           |   1 +
 include/media/rc-map.h            |   5 +-
 5 files changed, 151 insertions(+), 1 deletion(-)
 create mode 100644 drivers/media/rc/keymaps/rc-cec.c

diff --git a/drivers/media/rc/keymaps/Makefile 
b/drivers/media/rc/keymaps/Makefile
index fbbd3bb..9cffcc6 100644
--- a/drivers/media/rc/keymaps/Makefile
+++ b/drivers/media/rc/keymaps/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_RC_MAP) += rc-adstech-dvb-t-pci.o \
                        rc-behold.o \
                        rc-behold-columbus.o \
                        rc-budget-ci-old.o \
+                       rc-cec.o \
                        rc-cinergy-1400.o \
                        rc-cinergy.o \
                        rc-delock-61959.o \
diff --git a/drivers/media/rc/keymaps/rc-cec.c 
b/drivers/media/rc/keymaps/rc-cec.c
new file mode 100644
index 0000000..cc5b318
--- /dev/null
+++ b/drivers/media/rc/keymaps/rc-cec.c
@@ -0,0 +1,144 @@
+/* Keytable for the CEC remote control
+ *
+ * Copyright (c) 2015 by Kamil Debski
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <media/rc-map.h>
+#include <linux/module.h>
+
+/* CEC Spec "High-Definition Multimedia Interface Specification" can be 
obtained
+ * here: http://xtreamerdev.googlecode.com/files/CEC_Specs.pdf
+ * The list of control codes is listed in Table 27: User Control Codes p. 95 */
+
+static struct rc_map_table cec[] = {
+       { 0x00, KEY_OK },
+       { 0x01, KEY_UP },
+       { 0x02, KEY_DOWN },
+       { 0x03, KEY_LEFT },
+       { 0x04, KEY_RIGHT },
+       { 0x05, KEY_RIGHT_UP },
+       { 0x06, KEY_RIGHT_DOWN },
+       { 0x07, KEY_LEFT_UP },
+       { 0x08, KEY_LEFT_DOWN },
+       { 0x09, KEY_CONTEXT_MENU }, /* CEC Spec: Root Menu - see Note 2 */
+       /* Note 2: This is the initial display that a device shows. It is
+        * device-dependent and can be, for example, a contents menu, setup
+        * menu, favorite menu or other menu. The actual menu displayed
+        * may also depend on the device’s current state. */
+       { 0x0a, KEY_SETUP },
+       { 0x0b, KEY_MENU }, /* CEC Spec: Contents Menu */
+       { 0x0c, KEY_FAVORITES }, /* CEC Spec: Favorite Menu */
+       { 0x0d, KEY_EXIT },
+       /* 0x0e-0x1f: Reserved */
+       /* 0x20-0x29: Keys 0 to 9 */
+       { 0x20, KEY_NUMERIC_0 },
+       { 0x21, KEY_NUMERIC_1 },
+       { 0x22, KEY_NUMERIC_2 },
+       { 0x23, KEY_NUMERIC_3 },
+       { 0x24, KEY_NUMERIC_4 },
+       { 0x25, KEY_NUMERIC_5 },
+       { 0x26, KEY_NUMERIC_6 },
+       { 0x27, KEY_NUMERIC_7 },
+       { 0x28, KEY_NUMERIC_8 },
+       { 0x29, KEY_NUMERIC_9 },
+       { 0x2a, KEY_DOT },
+       { 0x2b, KEY_ENTER },
+       { 0x2c, KEY_CLEAR },
+       /* 0x2d-0x2e: Reserved */
+       { 0x2f, KEY_NEXT_FAVORITE }, /* CEC Spec: Next Favorite */
+       { 0x30, KEY_CHANNELUP },
+       { 0x31, KEY_CHANNELDOWN },
+       { 0x32, KEY_PREVIOUS }, /* CEC Spec: Previous Channel */
+       { 0x33, KEY_SOUND }, /* CEC Spec: Sound Select */
+       { 0x34, KEY_VIDEO }, /* 0x34: CEC Spec: Input Select */
+       { 0x35, KEY_INFO }, /* CEC Spec: Display Information */
+       { 0x36, KEY_HELP },
+       { 0x37, KEY_PAGEUP },
+       { 0x38, KEY_PAGEDOWN },
+       /* 0x39-0x3f: Reserved */
+       { 0x40, KEY_POWER },
+       { 0x41, KEY_VOLUMEUP },
+       { 0x42, KEY_VOLUMEDOWN },
+       { 0x43, KEY_MUTE },
+       { 0x44, KEY_PLAY },
+       { 0x45, KEY_STOP },
+       { 0x46, KEY_PAUSE },
+       { 0x47, KEY_RECORD },
+       { 0x48, KEY_REWIND },
+       { 0x49, KEY_FASTFORWARD },
+       { 0x4a, KEY_EJECTCD }, /* CEC Spec: Eject */
+       { 0x4b, KEY_FORWARD },
+       { 0x4c, KEY_BACK },
+       { 0x4d, KEY_STOP_RECORD }, /* CEC Spec: Stop-Record */
+       { 0x4e, KEY_PAUSE_RECORD }, /* CEC Spec: Pause-Record */
+       /* 0x4f: Reserved */
+       { 0x50, KEY_ANGLE },
+       { 0x51, KEY_TV2 },
+       { 0x52, KEY_VOD }, /* CEC Spec: Video on Demand */
+       { 0x53, KEY_EPG },
+       { 0x54, KEY_TIME }, /* CEC Spec: Timer */
+       { 0x55, KEY_CONFIG },
+       /* 0x56-0x5f: Reserved */
+       { 0x60, KEY_PLAY }, /* CEC Spec: Play Function */
+       { 0x6024, KEY_PLAY },
+       { 0x6020, KEY_PAUSE },
+       { 0x61, KEY_PLAYPAUSE }, /* CEC Spec: Pause-Play Function */
+       { 0x62, KEY_RECORD }, /* Spec: Record Function */
+       { 0x63, KEY_PAUSE }, /* CEC Spec: Pause-Record Function */
+       { 0x64, KEY_STOP }, /* CEC Spec: Stop Function */
+       { 0x65, KEY_MUTE }, /* CEC Spec: Mute Function */
+       { 0x66, KEY_UNMUTE }, /* CEC Spec: Restore the volume */
+       /* The following codes are hard to implement at this moment, as they
+        * carry an additional additional argument. Most likely changes to RC
+        * framework are necessary.
+        * For now they are interpreted by the CEC framework as non keycodes
+        * and are passed as messages enabling user application to parse them.
+        * */
+       /* 0x67: CEC Spec: Tune Function */
+       /* 0x68: CEC Spec: Seleect Media Function */
+       /* 0x69: CEC Spec: Select A/V Input Function */
+       /* 0x6a: CEC Spec: Select Audio Input Function */
+       { 0x6b, KEY_POWER }, /* CEC Spec: Power Toggle Function */
+       { 0x6c, KEY_SLEEP }, /* CEC Spec: Power Off Function */
+       { 0x6d, KEY_WAKEUP }, /* CEC Spec: Power On Function */
+       /* 0x6e-0x70: Reserved */
+       { 0x71, KEY_BLUE }, /* CEC Spec: F1 (Blue) */
+       { 0x72, KEY_RED }, /* CEC Spec: F2 (Red) */
+       { 0x73, KEY_GREEN }, /* CEC Spec: F3 (Green) */
+       { 0x74, KEY_YELLOW }, /* CEC Spec: F4 (Yellow) */
+       { 0x75, KEY_F5 },
+       { 0x76, KEY_DVB }, /* CEC Spec: Data - see Note 3 */
+       /* Note 3: This is used, for example, to enter or leave a digital TV
+        * data broadcast application. */
+       /* 0x77-0xff: Reserved */
+};
+
+static struct rc_map_list cec_map = {
+       .map = {
+               .scan           = cec,
+               .size           = ARRAY_SIZE(cec),
+               .rc_type        = RC_TYPE_CEC,
+               .name           = RC_MAP_CEC,
+       }
+};
+
+static int __init init_rc_map_cec(void)
+{
+       return rc_map_register(&cec_map);
+}
+
+static void __exit exit_rc_map_cec(void)
+{
+       rc_map_unregister(&cec_map);
+}
+
+module_init(init_rc_map_cec);
+module_exit(exit_rc_map_cec);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kamil Debski");
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 9d015db..905cd90 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -801,6 +801,7 @@ static struct {
        { RC_BIT_MCE_KBD,       "mce_kbd"       },
        { RC_BIT_LIRC,          "lirc"          },
        { RC_BIT_XMP,           "xmp"           },
+       { RC_BIT_CEC,           "cec"           },
 };
 
 /**
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index 45534da..f2e5d35 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -32,6 +32,7 @@ do {                                                          
\
 enum rc_driver_type {
        RC_DRIVER_SCANCODE = 0, /* Driver or hardware generates a scancode */
        RC_DRIVER_IR_RAW,       /* Needs a Infra-Red pulse/space decoder */
+       RC_DRIVER_CEC,
 };
 
 /**
diff --git a/include/media/rc-map.h b/include/media/rc-map.h
index 27763d5..acdca09 100644
--- a/include/media/rc-map.h
+++ b/include/media/rc-map.h
@@ -32,6 +32,7 @@ enum rc_type {
        RC_TYPE_RC6_MCE         = 17,   /* MCE (Philips RC6-6A-32 subtype) 
protocol */
        RC_TYPE_SHARP           = 18,   /* Sharp protocol */
        RC_TYPE_XMP             = 19,   /* XMP protocol */
+       RC_TYPE_CEC             = 20,   /* CEC protocol */
 };
 
 #define RC_BIT_NONE            0
@@ -55,6 +56,7 @@ enum rc_type {
 #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_CEC             (1 << RC_TYPE_CEC)
 
 #define RC_BIT_ALL     (RC_BIT_UNKNOWN | RC_BIT_OTHER | RC_BIT_LIRC | \
                         RC_BIT_RC5 | RC_BIT_RC5X | RC_BIT_RC5_SZ | \
@@ -63,7 +65,7 @@ enum rc_type {
                         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_XMP)
+                        RC_BIT_XMP | RC_BIT_CEC)
 
 
 #define RC_SCANCODE_UNKNOWN(x)                 (x)
@@ -125,6 +127,7 @@ void rc_map_init(void);
 #define RC_MAP_BEHOLD_COLUMBUS           "rc-behold-columbus"
 #define RC_MAP_BEHOLD                    "rc-behold"
 #define RC_MAP_BUDGET_CI_OLD             "rc-budget-ci-old"
+#define RC_MAP_CEC                       "rc-cec"
 #define RC_MAP_CINERGY_1400              "rc-cinergy-1400"
 #define RC_MAP_CINERGY                   "rc-cinergy"
 #define RC_MAP_DELOCK_61959              "rc-delock-61959"
-- 
2.1.4

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