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[media] saa7134: fix IR handling for HVR-1110

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Return the complete RC-5 code, instead of just the 8 least significant
bits.

Reported-by: Dorozel Csaba <mrjuuzer@upcmail.hu>
Tested-by: Dorozel Csaba <mrjuuzer@upcmail.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-12-31 18:56:24 -02:00
parent 1e73fa5d56
commit 641269f958
1 changed files with 12 additions and 9 deletions
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21
drivers/media/video/saa7134/saa7134-input.c
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@ -235,22 +235,25 @@ static int get_key_purpletv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
static int get_key_hvr1110(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
{
unsigned char buf[5], cod4, code3, code4;
unsigned char buf[5];
/* poll IR chip */
if (5 != i2c_master_recv(ir->c, buf, 5))
return -EIO;
cod4 = buf[4];
code4 = (cod4 >> 2);
code3 = buf[3];
if (code3 == 0)
/* no key pressed */
/* Check if some key were pressed */
if (!(buf[0] & 0x80))
return 0;
/* return key */
*ir_key = code4;
*ir_raw = code4;
/*
* buf[3] & 0x80 is always high.
* buf[3] & 0x40 is a parity bit. A repeat event is marked
* by preserving it into two separate readings
* buf[4] bits 0 and 1, and buf[1] and buf[2] are always
* zero.
*/
*ir_key = 0x1fff & ((buf[3] << 8) | (buf[4] >> 2));
*ir_raw = *ir_key;
return 1;
}