Initial import

1 files changed, 157 insertions, 0 deletions

diff --git a/drivers/media/usb/dvb-usb/af9005-remote.c b/drivers/media/usb/dvb-usb/af9005-remote.c
new file mode 100644
index 000000000..7e3961d0d
--- /dev/null
+++ b/drivers/media/usb/dvb-usb/af9005-remote.c
@@ -0,0 +1,157 @@
+/* DVB USB compliant Linux driver for the Afatech 9005
+ * USB1.1 DVB-T receiver.
+ *
+ * Standard remote decode function
+ *
+ * Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
+ *
+ * Thanks to Afatech who kindly provided information.
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * see Documentation/dvb/README.dvb-usb for more information
+ */
+#include "af9005.h"
+/* debug */
+static int dvb_usb_af9005_remote_debug;
+module_param_named(debug, dvb_usb_af9005_remote_debug, int, 0644);
+MODULE_PARM_DESC(debug,
+		 "enable (1) or disable (0) debug messages."
+		 DVB_USB_DEBUG_STATUS);
+
+#define deb_decode(args...)   dprintk(dvb_usb_af9005_remote_debug,0x01,args)
+
+struct rc_map_table rc_map_af9005_table[] = {
+
+	{0x01b7, KEY_POWER},
+	{0x01a7, KEY_VOLUMEUP},
+	{0x0187, KEY_CHANNELUP},
+	{0x017f, KEY_MUTE},
+	{0x01bf, KEY_VOLUMEDOWN},
+	{0x013f, KEY_CHANNELDOWN},
+	{0x01df, KEY_1},
+	{0x015f, KEY_2},
+	{0x019f, KEY_3},
+	{0x011f, KEY_4},
+	{0x01ef, KEY_5},
+	{0x016f, KEY_6},
+	{0x01af, KEY_7},
+	{0x0127, KEY_8},
+	{0x0107, KEY_9},
+	{0x01cf, KEY_ZOOM},
+	{0x014f, KEY_0},
+	{0x018f, KEY_GOTO},	/* marked jump on the remote */
+
+	{0x00bd, KEY_POWER},
+	{0x007d, KEY_VOLUMEUP},
+	{0x00fd, KEY_CHANNELUP},
+	{0x009d, KEY_MUTE},
+	{0x005d, KEY_VOLUMEDOWN},
+	{0x00dd, KEY_CHANNELDOWN},
+	{0x00ad, KEY_1},
+	{0x006d, KEY_2},
+	{0x00ed, KEY_3},
+	{0x008d, KEY_4},
+	{0x004d, KEY_5},
+	{0x00cd, KEY_6},
+	{0x00b5, KEY_7},
+	{0x0075, KEY_8},
+	{0x00f5, KEY_9},
+	{0x0095, KEY_ZOOM},
+	{0x0055, KEY_0},
+	{0x00d5, KEY_GOTO},	/* marked jump on the remote */
+};
+
+int rc_map_af9005_table_size = ARRAY_SIZE(rc_map_af9005_table);
+
+static int repeatable_keys[] = {
+	KEY_VOLUMEUP,
+	KEY_VOLUMEDOWN,
+	KEY_CHANNELUP,
+	KEY_CHANNELDOWN
+};
+
+int af9005_rc_decode(struct dvb_usb_device *d, u8 * data, int len, u32 * event,
+		     int *state)
+{
+	u16 mark, space;
+	u32 result;
+	u8 cust, dat, invdat;
+	int i;
+
+	if (len >= 6) {
+		mark = (u16) (data[0] << 8) + data[1];
+		space = (u16) (data[2] << 8) + data[3];
+		if (space * 3 < mark) {
+			for (i = 0; i < ARRAY_SIZE(repeatable_keys); i++) {
+				if (d->last_event == repeatable_keys[i]) {
+					*state = REMOTE_KEY_REPEAT;
+					*event = d->last_event;
+					deb_decode("repeat key, event %x\n",
+						   *event);
+					return 0;
+				}
+			}
+			deb_decode("repeated key ignored (non repeatable)\n");
+			return 0;
+		} else if (len >= 33 * 4) {	/*32 bits + start code */
+			result = 0;
+			for (i = 4; i < 4 + 32 * 4; i += 4) {
+				result <<= 1;
+				mark = (u16) (data[i] << 8) + data[i + 1];
+				mark >>= 1;
+				space = (u16) (data[i + 2] << 8) + data[i + 3];
+				space >>= 1;
+				if (mark * 2 > space)
+					result += 1;
+			}
+			deb_decode("key pressed, raw value %x\n", result);
+			if ((result & 0xff000000) != 0xfe000000) {
+				deb_decode
+				    ("doesn't start with 0xfe, ignored\n");
+				return 0;
+			}
+			cust = (result >> 16) & 0xff;
+			dat = (result >> 8) & 0xff;
+			invdat = (~result) & 0xff;
+			if (dat != invdat) {
+				deb_decode("code != inverted code\n");
+				return 0;
+			}
+			for (i = 0; i < rc_map_af9005_table_size; i++) {
+				if (rc5_custom(&rc_map_af9005_table[i]) == cust
+				    && rc5_data(&rc_map_af9005_table[i]) == dat) {
+					*event = rc_map_af9005_table[i].keycode;
+					*state = REMOTE_KEY_PRESSED;
+					deb_decode
+					    ("key pressed, event %x\n", *event);
+					return 0;
+				}
+			}
+			deb_decode("not found in table\n");
+		}
+	}
+	return 0;
+}
+
+EXPORT_SYMBOL(rc_map_af9005_table);
+EXPORT_SYMBOL(rc_map_af9005_table_size);
+EXPORT_SYMBOL(af9005_rc_decode);
+
+MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>");
+MODULE_DESCRIPTION
+    ("Standard remote control decoder for Afatech 9005 DVB-T USB1.1 stick");
+MODULE_VERSION("1.0");
+MODULE_LICENSE("GPL");