[alsa-devel] [PATCH] ALSA: hda - Add In-driver connection info

[Takashi Iwai]

At Mon, 24 Jun 2013 23:41:23 -0400,
Wang Xingchao wrote:
> 
> Pin's connection list may change dynamically with hot-plug event
> on Intel Haswell chip. Users would see connections be "0" in codec#.
> when play audio on this pin, software driver choose converter from cache
> connections. So add "In-driver connection" info to avoid confuse when
> raw connections are different with cache connection.
> 
> Signed-off-by: Wang Xingchao <xingchao.wang at linux.intel.com>

Thanks, applied now.


Takashi

> ---
>  sound/pci/hda/hda_proc.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
> index 0fee8fa..9760f00 100644
> --- a/sound/pci/hda/hda_proc.c
> +++ b/sound/pci/hda/hda_proc.c
> @@ -504,6 +504,8 @@ static void print_conn_list(struct snd_info_buffer *buffer,
>  			    int conn_len)
>  {
>  	int c, curr = -1;
> +	const hda_nid_t *list;
> +	int cache_len;
>  
>  	if (conn_len > 1 &&
>  	    wid_type != AC_WID_AUD_MIX &&
> @@ -521,6 +523,19 @@ static void print_conn_list(struct snd_info_buffer *buffer,
>  		}
>  		snd_iprintf(buffer, "\n");
>  	}
> +
> +	/* Get Cache connections info */
> +	cache_len = snd_hda_get_conn_list(codec, nid, &list);
> +	if (cache_len != conn_len
> +			|| memcmp(list, conn, conn_len)) {
> +		snd_iprintf(buffer, "  In-driver Connection: %d\n", cache_len);
> +		if (cache_len > 0) {
> +			snd_iprintf(buffer, "    ");
> +			for (c = 0; c < cache_len; c++)
> +				snd_iprintf(buffer, " 0x%02x", list[c]);
> +			snd_iprintf(buffer, "\n");
> +		}
> +	}
>  }
>  
>  static void print_gpio(struct snd_info_buffer *buffer,
> -- 
> 1.8.1.2
>