-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Monday, June 24, 2013 8:07 PM To: Wang Xingchao Cc: alsa-devel@alsa-project.org; Wang, Xingchao Subject: Re: [PATCH 2/2 V2] ALSA: hda - Add cache connection info
At Mon, 24 Jun 2013 09:10:19 -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 choose connections from cache. So add Cache connection info to avoid confuse.
Signed-off-by: Wang Xingchao xingchao.wang@linux.intel.com
sound/pci/hda/hda_proc.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c index 0fee8fa..403589c 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 &&
@@ -511,7 +513,7 @@ static void print_conn_list(struct snd_info_buffer
*buffer,
wid_type != AC_WID_POWER) curr = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_CONNECT_SEL, 0);
- snd_iprintf(buffer, " Connection: %d\n", conn_len);
- snd_iprintf(buffer, " Raw Connection: %d\n", conn_len);
Don't change the existing entry. It'll break the user-space tools that read the proc contents.
if (conn_len > 0) { snd_iprintf(buffer, " "); for (c = 0; c < conn_len; c++) { @@ -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, " Cache Connection: %d\n", conn_len);Must be cache_len.
Also "Cache connection" might be a bit misleading. In this case, it's not cached but used as alternative in driver. "In-driver connection" or such? English-native people can give better advice...
Yes, waiting for a better name :)
if (cache_len > 0) {snd_iprintf(buffer, " ");for (c = 0; c < conn_len; c++)Must be cache_len, too.
Oh , sorry, a mistake, will fix it.
thanks,
Takashi
snd_iprintf(buffer, " 0x%02x", list[c]);snd_iprintf(buffer, "\n");}- }
}
static void print_gpio(struct snd_info_buffer *buffer,
1.8.1.2