On Fri, 2010-12-17 at 15:22 -0200, Mauro Carvalho Chehab wrote:
> At Pixelview SBTVD Hybrid, the bits sent by the IR are inverted. Due to that,
> the existing keytables produce wrong codes.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
>
> diff --git a/drivers/media/video/cx231xx/cx231xx-input.c b/drivers/media/video/cx231xx/cx231xx-input.c
> index c236a4e..45e14ca 100644
> --- a/drivers/media/video/cx231xx/cx231xx-input.c
> +++ b/drivers/media/video/cx231xx/cx231xx-input.c
> @@ -27,7 +27,7 @@
> static int get_key_isdbt(struct IR_i2c *ir, u32 *ir_key,
> u32 *ir_raw)
> {
> - u8 cmd;
> + u8 cmd, scancode;
>
> dev_dbg(&ir->rc->input_dev->dev, "%s\n", __func__);
>
> @@ -42,10 +42,21 @@ static int get_key_isdbt(struct IR_i2c *ir, u32 *ir_key,
> if (cmd == 0xff)
> return 0;
>
> - dev_dbg(&ir->rc->input_dev->dev, "scancode = %02x\n", cmd);
> -
> - *ir_key = cmd;
> - *ir_raw = cmd;
> + scancode =
> + ((cmd & 0x01) ? 0x80 : 0) |
> + ((cmd & 0x02) ? 0x40 : 0) |
> + ((cmd & 0x04) ? 0x20 : 0) |
> + ((cmd & 0x08) ? 0x10 : 0) |
> + ((cmd & 0x10) ? 0x08 : 0) |
> + ((cmd & 0x20) ? 0x04 : 0) |
> + ((cmd & 0x40) ? 0x02 : 0) |
> + ((cmd & 0x80) ? 0x01 : 0);
I have to point out this alternate method just for fun:
http://www-graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits
:D
Regards,
Andy
> + dev_dbg(&ir->rc->input_dev->dev, "cmd %02x, scan = %02x\n",
> + cmd, scancode);
> +
> + *ir_key = scancode;
> + *ir_raw = scancode;
> return 1;
> }
>
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