diff options
Diffstat (limited to 'linux/drivers/media/video/ir-kbd-i2c.c')
| -rw-r--r-- | linux/drivers/media/video/ir-kbd-i2c.c | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/linux/drivers/media/video/ir-kbd-i2c.c b/linux/drivers/media/video/ir-kbd-i2c.c index e6405386c..867b8ef6c 100644 --- a/linux/drivers/media/video/ir-kbd-i2c.c +++ b/linux/drivers/media/video/ir-kbd-i2c.c @@ -1,5 +1,5 @@ /* - * $Id: ir-kbd-i2c.c,v 1.25 2005/11/04 14:23:40 mchehab Exp $ + * $Id: ir-kbd-i2c.c,v 1.26 2005/11/08 16:37:02 rmcc Exp $ * * keyboard input driver for i2c IR remote controls * @@ -185,6 +185,58 @@ static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) *ir_raw = b; return 1; } + +/* The new pinnacle PCTV remote (with the colored buttons) + * + * Ricardo Cerqueira <v4l@cerqueira.org> + */ + +int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) +{ + unsigned char b[4]; + unsigned int start = 0,parity = 0,code = 0; + + /* poll IR chip */ + if (4 != i2c_master_recv(&ir->c,b,4)) { + dprintk(2,"read error\n"); + return -EIO; + } + + for (start = 0; start<4; start++) { + if (b[start] == 0x80) { + code=b[(start+3)%4]; + parity=b[(start+2)%4]; + } + } + + /* Empty Request */ + if (parity==0) + return 0; + + /* Repeating... */ + if (ir->old == parity) + return 0; + + + ir->old = parity; + + /* Reduce code value to fit inside IR_KEYTAB_SIZE + * + * this is the only value that results in 42 unique + * codes < 128 + */ + + code %= 0x88; + + *ir_raw = code; + *ir_key = code; + + dprintk(1,"Pinnacle PCTV key %02x\n", code); + + return 1; +} + +EXPORT_SYMBOL_GPL(get_key_pinnacle); /* ----------------------------------------------------------------------- */ |