Re: [PATCH] rc-core: fix dib0700 scancode generation for RC5

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2015-02-25 23:30 GMT+01:00 David Härdeman <david@xxxxxxxxxxx>:
> David, could you please test this patch?
> ---
>  drivers/media/usb/dvb-usb/dib0700_core.c |   70 +++++++++++++++++-------------
>  1 file changed, 40 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
> index 50856db..605b090 100644
> --- a/drivers/media/usb/dvb-usb/dib0700_core.c
> +++ b/drivers/media/usb/dvb-usb/dib0700_core.c
> @@ -658,10 +658,20 @@ out:
>  struct dib0700_rc_response {
>         u8 report_id;
>         u8 data_state;
> -       u8 system;
> -       u8 not_system;
> -       u8 data;
> -       u8 not_data;
> +       union {
> +               struct {
> +                       u8 system;
> +                       u8 not_system;
> +                       u8 data;
> +                       u8 not_data;
> +               } nec;
> +               struct {
> +                       u8 not_used;
> +                       u8 system;
> +                       u8 data;
> +                       u8 not_data;
> +               } rc5;
> +       };
>  };
>  #define RC_MSG_SIZE_V1_20 6
>
> @@ -697,8 +707,8 @@ static void dib0700_rc_urb_completion(struct urb *purb)
>
>         deb_data("IR ID = %02X state = %02X System = %02X %02X Cmd = %02X %02X (len %d)\n",
>                  poll_reply->report_id, poll_reply->data_state,
> -                poll_reply->system, poll_reply->not_system,
> -                poll_reply->data, poll_reply->not_data,
> +                poll_reply->nec.system, poll_reply->nec.not_system,
> +                poll_reply->nec.data, poll_reply->nec.not_data,
>                  purb->actual_length);
>
>         switch (d->props.rc.core.protocol) {
> @@ -707,30 +717,30 @@ static void dib0700_rc_urb_completion(struct urb *purb)
>                 toggle = 0;
>
>                 /* NEC protocol sends repeat code as 0 0 0 FF */
> -               if (poll_reply->system     == 0x00 &&
> -                   poll_reply->not_system == 0x00 &&
> -                   poll_reply->data       == 0x00 &&
> -                   poll_reply->not_data   == 0xff) {
> +               if (poll_reply->nec.system     == 0x00 &&
> +                   poll_reply->nec.not_system == 0x00 &&
> +                   poll_reply->nec.data       == 0x00 &&
> +                   poll_reply->nec.not_data   == 0xff) {
>                         poll_reply->data_state = 2;
>                         break;
>                 }
>
> -               if ((poll_reply->data ^ poll_reply->not_data) != 0xff) {
> +               if ((poll_reply->nec.data ^ poll_reply->nec.not_data) != 0xff) {
>                         deb_data("NEC32 protocol\n");
> -                       keycode = RC_SCANCODE_NEC32(poll_reply->system     << 24 |
> -                                                    poll_reply->not_system << 16 |
> -                                                    poll_reply->data       << 8  |
> -                                                    poll_reply->not_data);
> -               } else if ((poll_reply->system ^ poll_reply->not_system) != 0xff) {
> +                       keycode = RC_SCANCODE_NEC32(poll_reply->nec.system     << 24 |
> +                                                    poll_reply->nec.not_system << 16 |
> +                                                    poll_reply->nec.data       << 8  |
> +                                                    poll_reply->nec.not_data);
> +               } else if ((poll_reply->nec.system ^ poll_reply->nec.not_system) != 0xff) {
>                         deb_data("NEC extended protocol\n");
> -                       keycode = RC_SCANCODE_NECX(poll_reply->system << 8 |
> -                                                   poll_reply->not_system,
> -                                                   poll_reply->data);
> +                       keycode = RC_SCANCODE_NECX(poll_reply->nec.system << 8 |
> +                                                   poll_reply->nec.not_system,
> +                                                   poll_reply->nec.data);
>
>                 } else {
>                         deb_data("NEC normal protocol\n");
> -                       keycode = RC_SCANCODE_NEC(poll_reply->system,
> -                                                  poll_reply->data);
> +                       keycode = RC_SCANCODE_NEC(poll_reply->nec.system,
> +                                                  poll_reply->nec.data);
>                 }
>
>                 break;
> @@ -738,19 +748,19 @@ static void dib0700_rc_urb_completion(struct urb *purb)
>                 deb_data("RC5 protocol\n");
>                 protocol = RC_TYPE_RC5;
>                 toggle = poll_reply->report_id;
> -               keycode = RC_SCANCODE_RC5(poll_reply->system, poll_reply->data);
> +               keycode = RC_SCANCODE_RC5(poll_reply->rc5.system, poll_reply->rc5.data);
> +
> +               if ((poll_reply->rc5.data ^ poll_reply->rc5.not_data) != 0xff) {
> +                       /* Key failed integrity check */
> +                       err("key failed integrity check: %02x %02x %02x %02x",
> +                           poll_reply->rc5.not_used, poll_reply->rc5.system,
> +                           poll_reply->rc5.data, poll_reply->rc5.not_data);
> +                       goto resubmit;
> +               }
>
>                 break;
>         }
>
> -       if ((poll_reply->data + poll_reply->not_data) != 0xff) {
> -               /* Key failed integrity check */
> -               err("key failed integrity check: %02x %02x %02x %02x",
> -                   poll_reply->system,  poll_reply->not_system,
> -                   poll_reply->data, poll_reply->not_data);
> -               goto resubmit;
> -       }
> -
>         rc_keydown(d->rc_dev, protocol, keycode, toggle);
>
>  resubmit:
>

Hi David,

yes! Your patch seems to work fine on my side, my remote is working again!

Here is the relevant debug log (press and release of the "1" key):

[ 4131.099573] IR ID = 01 state = 01 System = 00 07 Cmd = 0F F0 (len 6)
[ 4131.099579] RC5 protocol
[ 4131.099581] protocol = 03 keycode = 070F toggle = 01
[ 4131.212813] IR ID = 01 state = 02 System = 00 07 Cmd = 0F F0 (len 6)
[ 4131.212819] RC5 protocol

This is the output of debug output which I added in
dib0700_core.c:dib0700_rc_urb_completion() before the call of
rc_keydown() function:

deb_data("protocol = %02X keycode = %04X toggle = %02X\n", protocol,
keycode, toggle);
[ 4131.212821] protocol = 03 keycode = 070F toggle = 01

Regards,
David
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