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ALSA: hda - add power states information in proc 

add more power states information:
- reset status
- clock stop ok
- power states error

Output like:
Power: setting=D0, actual=D0, Error, Clock-stop-OK, Setting-reset

Signed-off-by: Wang Xingchao <xingchao.wang@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Wang Xingchao 2012-06-06 13:49:44 +08:00 committed by Takashi Iwai
parent f8f5701bda
commit ce63f3ba25
2 changed files with 11 additions and 1 deletions
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3
sound/pci/hda/hda_codec.h
View File

@ -323,6 +323,9 @@ enum {
#define AC_PWRST_D1 0x01
#define AC_PWRST_D2 0x02
#define AC_PWRST_D3 0x03
#define AC_PWRST_ERROR (1<<8)
#define AC_PWRST_CLK_STOP_OK (1<<9)
#define AC_PWRST_SETTING_RESET (1<<10)
/* Processing capabilies */
#define AC_PCAP_BENIGN (1<<0)

9
sound/pci/hda/hda_proc.c
View File

@ -455,10 +455,17 @@ static void print_power_state(struct snd_info_buffer *buffer,
snd_iprintf(buffer, " Power states: %s\n",
bits_names(sup, names, ARRAY_SIZE(names)));
snd_iprintf(buffer, " Power: setting=%s, actual=%s\n",
snd_iprintf(buffer, " Power: setting=%s, actual=%s",
get_pwr_state(pwr & AC_PWRST_SETTING),
get_pwr_state((pwr & AC_PWRST_ACTUAL) >>
AC_PWRST_ACTUAL_SHIFT));
if (pwr & AC_PWRST_ERROR)
snd_iprintf(buffer, ", Error");
if (pwr & AC_PWRST_CLK_STOP_OK)
snd_iprintf(buffer, ", Clock-stop-OK");
if (pwr & AC_PWRST_SETTING_RESET)
snd_iprintf(buffer, ", Setting-reset");
snd_iprintf(buffer, "\n");
}
static void print_unsol_cap(struct snd_info_buffer *buffer,