1 files changed, 60 insertions, 4 deletions

diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index a30254bed311..efe849981ab7 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -12,6 +12,10 @@
  *      Markus Rechberger <mrechberger@gmail.com>
  * modified for DViCO Fusion HDTV 5 RT GOLD by
  *      Chaogui Zhang <czhang1974@gmail.com>
+ * modified for MSI TV@nywhere Plus by
+ *      Henry Wong <henry@stuffedcow.net>
+ *      Mark Schultz <n9xmj@yahoo.com>
+ *      Brian Rogers <brian_rogers@comcast.net>
  *
  *  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
@@ -65,7 +69,7 @@ static int get_key_haup_common(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
                                int size, int offset)
 {
         unsigned char buf[6];
-        int start, range, toggle, dev, code;
+        int start, range, toggle, dev, code, ircode;
 
         /* poll IR chip */
         if (size != i2c_master_recv(&ir->c,buf,size))
@@ -85,6 +89,24 @@ static int get_key_haup_common(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
         if (!start)
                 /* no key pressed */
                 return 0;
+        /*
+         * Hauppauge remotes (black/silver) always use
+         * specific device ids. If we do not filter the
+         * device ids then messages destined for devices
+         * such as TVs (id=0) will get through causing
+         * mis-fired events.
+         *
+         * We also filter out invalid key presses which
+         * produce annoying debug log entries.
+         */
+        ircode= (start << 12) | (toggle << 11) | (dev << 6) | code;
+        if ((ircode & 0x1fff)==0x1fff)
+                /* invalid key press */
+                return 0;
+
+        if (dev!=0x1e && dev!=0x1f)
+                /* not a hauppauge remote */
+                return 0;
 
         if (!range)
                 code += 64;
@@ -94,7 +116,7 @@ static int get_key_haup_common(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
 
         /* return key */
         *ir_key = code;
-        *ir_raw = (start << 12) | (toggle << 11) | (dev << 6) | code;
+        *ir_raw = ircode;
         return 1;
 }
 
@@ -224,9 +246,15 @@ static void ir_timer(unsigned long data)
 static void ir_work(struct work_struct *work)
 {
         struct IR_i2c *ir = container_of(work, struct IR_i2c, work);
+        int polling_interval = 100;
+
+        /* MSI TV@nywhere Plus requires more frequent polling
+           otherwise it will miss some keypresses */
+        if (ir->c.adapter->id == I2C_HW_SAA7134 && ir->c.addr == 0x30)
+                polling_interval = 50;
 
         ir_key_poll(ir);
-        mod_timer(&ir->timer, jiffies + msecs_to_jiffies(100));
+        mod_timer(&ir->timer, jiffies + msecs_to_jiffies(polling_interval));
 }
 
 /* ----------------------------------------------------------------------- */
@@ -465,9 +493,37 @@ static int ir_probe(struct i2c_adapter *adap)
                         (1 == rc) ? "yes" : "no");
                 if (1 == rc) {
                         ir_attach(adap, probe[i], 0, 0);
-                        break;
+                        return 0;
                 }
         }
+
+        /* Special case for MSI TV@nywhere Plus remote */
+        if (adap->id == I2C_HW_SAA7134) {
+                u8 temp;
+
+                /* MSI TV@nywhere Plus controller doesn't seem to
+                   respond to probes unless we read something from
+                   an existing device. Weird... */
+
+                msg.addr = 0x50;
+                rc = i2c_transfer(adap, &msg, 1);
+                        dprintk(1, "probe 0x%02x @ %s: %s\n",
+                        msg.addr, adap->name,
+                        (1 == rc) ? "yes" : "no");
+
+                /* Now do the probe. The controller does not respond
+                   to 0-byte reads, so we use a 1-byte read instead. */
+                msg.addr = 0x30;
+                msg.len = 1;
+                msg.buf = &temp;
+                rc = i2c_transfer(adap, &msg, 1);
+                dprintk(1, "probe 0x%02x @ %s: %s\n",
+                        msg.addr, adap->name,
+                        (1 == rc) ? "yes" : "no");
+                if (1 == rc)
+                        ir_attach(adap, msg.addr, 0, 0);
+        }
+
         return 0;
 }