V4L/DVB: ir-core: Add support for badly-implemented hardware decoders

A few hardware Remote Controller decoders, even using a standard protocol,
aren't able to provide the entire scancode. Due to that, the capability
of using other IR's are limited on those hardware.

Adds a way to indicate to ir-core what are the bits that the hardware
provides, from a scancode, allowing the addition of a complete IR table
to the kernel and allowing a limited support for changing the Remote
Controller on those devices.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 103 insertions, 6 deletions

diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
index a89456932f7..af7400bc906 100644
--- a/drivers/media/IR/ir-keytable.c
+++ b/drivers/media/IR/ir-keytable.c
@@ -89,6 +89,18 @@ static int ir_do_setkeycode(struct input_dev *dev,
 {
 	unsigned int i;
 	int old_keycode = KEY_RESERVED;
+	struct ir_input_dev *ir_dev = input_get_drvdata(dev);
+
+	/*
+	 * Unfortunately, some hardware-based IR decoders don't provide
+	 * all bits for the complete IR code. In general, they provide only
+	 * the command part of the IR code. Yet, as it is possible to replace
+	 * the provided IR with another one, it is needed to allow loading
+	 * IR tables from other remotes. So,
+	 */
+	if (ir_dev->props && ir_dev->props->scanmask) {
+		scancode &= ir_dev->props->scanmask;
+	}
 
 	/* First check if we already have a mapping for this ir command */
 	for (i = 0; i < rc_tab->len; i++) {
@@ -448,6 +460,13 @@ int __ir_input_register(struct input_dev *input_dev,
 						  sizeof(struct ir_scancode));
 	ir_dev->rc_tab.scan = kmalloc(ir_dev->rc_tab.alloc, GFP_KERNEL);
 	ir_dev->rc_tab.size = ir_dev->rc_tab.alloc / sizeof(struct ir_scancode);
+	if (props) {
+		ir_dev->props = props;
+		if (props->open)
+			input_dev->open = ir_open;
+		if (props->close)
+			input_dev->close = ir_close;
+	}
 
 	if (!ir_dev->rc_tab.scan) {
 		rc = -ENOMEM;
@@ -465,12 +484,6 @@ int __ir_input_register(struct input_dev *input_dev,
 		goto out_table;
 	}
 
-	ir_dev->props = props;
-	if (props && props->open)
-		input_dev->open = ir_open;
-	if (props && props->close)
-		input_dev->close = ir_close;
-
 	rc = ir_register_class(input_dev);
 	if (rc < 0)
 		goto out_table;
diff --git a/drivers/media/IR/keymaps/Makefile b/drivers/media/IR/keymaps/Makefile
index 937b7db9c9d..c4d891d7949 100644
--- a/drivers/media/IR/keymaps/Makefile
+++ b/drivers/media/IR/keymaps/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_RC_MAP) += rc-adstech-dvb-t-pci.o \
 			rc-pinnacle-grey.o \
 			rc-pinnacle-pctv-hd.o \
 			rc-pixelview.o \
+			rc-pixelview-mk12.o \
 			rc-pixelview-new.o \
 			rc-powercolor-real-angel.o \
 			rc-proteus-2309.o \
diff --git a/drivers/media/IR/keymaps/rc-pixelview-mk12.c b/drivers/media/IR/keymaps/rc-pixelview-mk12.c
new file mode 100644
index 00000000000..5a735d569a8
--- /dev/null
+++ b/drivers/media/IR/keymaps/rc-pixelview-mk12.c
@@ -0,0 +1,83 @@
+/* rc-pixelview-mk12.h - Keytable for pixelview Remote Controller
+ *
+ * keymap imported from ir-keymaps.c
+ *
+ * Copyright (c) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com>
+ *
+ * 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>
+
+/*
+ * Keytable for MK-F12 IR remote provided together with Pixelview
+ * Ultra Pro Remote Controller. Uses NEC extended format.
+ */
+static struct ir_scancode pixelview_mk12[] = {
+	{ 0x866b03, KEY_TUNER },	/* Timeshift */
+	{ 0x866b1e, KEY_POWER2 },	/* power */
+
+	{ 0x866b01, KEY_1 },
+	{ 0x866b0b, KEY_2 },
+	{ 0x866b1b, KEY_3 },
+	{ 0x866b05, KEY_4 },
+	{ 0x866b09, KEY_5 },
+	{ 0x866b15, KEY_6 },
+	{ 0x866b06, KEY_7 },
+	{ 0x866b0a, KEY_8 },
+	{ 0x866b12, KEY_9 },
+	{ 0x866b02, KEY_0 },
+
+	{ 0x866b13, KEY_AGAIN },	/* loop */
+	{ 0x866b10, KEY_DIGITS },	/* +100 */
+
+	{ 0x866b00, KEY_MEDIA },	/* source */
+	{ 0x866b18, KEY_MUTE },		/* mute */
+	{ 0x866b19, KEY_CAMERA },	/* snapshot */
+	{ 0x866b1a, KEY_SEARCH },	/* scan */
+
+	{ 0x866b16, KEY_CHANNELUP },	/* chn + */
+	{ 0x866b14, KEY_CHANNELDOWN },	/* chn - */
+	{ 0x866b1f, KEY_VOLUMEUP },	/* vol + */
+	{ 0x866b17, KEY_VOLUMEDOWN },	/* vol - */
+	{ 0x866b1c, KEY_ZOOM },		/* zoom */
+
+	{ 0x866b04, KEY_REWIND },
+	{ 0x866b0e, KEY_RECORD },
+	{ 0x866b0c, KEY_FORWARD },
+
+	{ 0x866b1d, KEY_STOP },
+	{ 0x866b08, KEY_PLAY },
+	{ 0x866b0f, KEY_PAUSE },
+
+	{ 0x866b0d, KEY_TV },
+	{ 0x866b07, KEY_RADIO },	/* FM */
+};
+
+static struct rc_keymap pixelview_map = {
+	.map = {
+		.scan    = pixelview_mk12,
+		.size    = ARRAY_SIZE(pixelview_mk12),
+		.ir_type = IR_TYPE_NEC,
+		.name    = RC_MAP_PIXELVIEW_MK12,
+	}
+};
+
+static int __init init_rc_map_pixelview(void)
+{
+	return ir_register_map(&pixelview_map);
+}
+
+static void __exit exit_rc_map_pixelview(void)
+{
+	ir_unregister_map(&pixelview_map);
+}
+
+module_init(init_rc_map_pixelview)
+module_exit(exit_rc_map_pixelview)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");