From cc7093df3cf7ace678284c0ad3a6cfb3a1d5efd9 Mon Sep 17 00:00:00 2001 From: David Hardeman Date: Tue, 26 Sep 2006 16:39:00 -0300 Subject: V4L/DVB (4670): Allow RC5 codes 64 - 127 in ir-kbd-i2c.c The RC5 coding has for a long time supported commands 64-127 in addition to 0-63. This is controlled by the second bit of the RC5 packet (see The attached patch modifies ir-kbd-i2c.c to allow for commands 64-127, tested with a PVR350 card in combination with a programmable remote. Signed-off-by: David Hardeman Signed-off-by: Andrew Morton Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/ir-kbd-i2c.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c index fba30a40e9c6..1457b1602221 100644 --- a/drivers/media/video/ir-kbd-i2c.c +++ b/drivers/media/video/ir-kbd-i2c.c @@ -64,23 +64,32 @@ MODULE_PARM_DESC(hauppauge, "Specify Hauppauge remote: 0=black, 1=grey (defaults static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) { unsigned char buf[3]; - int start, toggle, dev, code; + int start, range, toggle, dev, code; /* poll IR chip */ if (3 != i2c_master_recv(&ir->c,buf,3)) return -EIO; /* split rc5 data block ... */ - start = (buf[0] >> 6) & 3; + start = (buf[0] >> 7) & 1; + range = (buf[0] >> 6) & 1; toggle = (buf[0] >> 5) & 1; dev = buf[0] & 0x1f; code = (buf[1] >> 2) & 0x3f; - if (3 != start) + /* rc5 has two start bits + * the first bit must be one + * the second bit defines the command range (1 = 0-63, 0 = 64 - 127) + */ + if (!start) /* no key pressed */ return 0; - dprintk(1,"ir hauppauge (rc5): s%d t%d dev=%d code=%d\n", - start, toggle, dev, code); + + if (!range) + code += 64; + + dprintk(1,"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n", + start, range, toggle, dev, code); /* return key */ *ir_key = code; -- cgit v1.2.3