1 files changed, 157 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/af9005-remote.c b/drivers/media/dvb/dvb-usb/af9005-remote.c
new file mode 100644
index 000000000000..ff00c0e8f4a1
--- /dev/null
+++ b/drivers/media/dvb/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/REDME.dvb-usb for more information
+ */
+#include "af9005.h"
+/* debug */
+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 dvb_usb_rc_key af9005_rc_keys[] = {
+
+        {0x01, 0xb7, KEY_POWER},
+        {0x01, 0xa7, KEY_VOLUMEUP},
+        {0x01, 0x87, KEY_CHANNELUP},
+        {0x01, 0x7f, KEY_MUTE},
+        {0x01, 0xbf, KEY_VOLUMEDOWN},
+        {0x01, 0x3f, KEY_CHANNELDOWN},
+        {0x01, 0xdf, KEY_1},
+        {0x01, 0x5f, KEY_2},
+        {0x01, 0x9f, KEY_3},
+        {0x01, 0x1f, KEY_4},
+        {0x01, 0xef, KEY_5},
+        {0x01, 0x6f, KEY_6},
+        {0x01, 0xaf, KEY_7},
+        {0x01, 0x27, KEY_8},
+        {0x01, 0x07, KEY_9},
+        {0x01, 0xcf, KEY_ZOOM},
+        {0x01, 0x4f, KEY_0},
+        {0x01, 0x8f, KEY_GOTO}, /* marked jump on the remote */
+
+        {0x00, 0xbd, KEY_POWER},
+        {0x00, 0x7d, KEY_VOLUMEUP},
+        {0x00, 0xfd, KEY_CHANNELUP},
+        {0x00, 0x9d, KEY_MUTE},
+        {0x00, 0x5d, KEY_VOLUMEDOWN},
+        {0x00, 0xdd, KEY_CHANNELDOWN},
+        {0x00, 0xad, KEY_1},
+        {0x00, 0x6d, KEY_2},
+        {0x00, 0xed, KEY_3},
+        {0x00, 0x8d, KEY_4},
+        {0x00, 0x4d, KEY_5},
+        {0x00, 0xcd, KEY_6},
+        {0x00, 0xb5, KEY_7},
+        {0x00, 0x75, KEY_8},
+        {0x00, 0xf5, KEY_9},
+        {0x00, 0x95, KEY_ZOOM},
+        {0x00, 0x55, KEY_0},
+        {0x00, 0xd5, KEY_GOTO}, /* marked jump on the remote */
+};
+
+int af9005_rc_keys_size = ARRAY_SIZE(af9005_rc_keys);
+
+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 < af9005_rc_keys_size; i++) {
+                                if (af9005_rc_keys[i].custom == cust
+                                    && af9005_rc_keys[i].data == dat) {
+                                        *event = af9005_rc_keys[i].event;
+                                        *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(af9005_rc_keys);
+EXPORT_SYMBOL(af9005_rc_keys_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");