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>

2 files changed, 11 insertions, 1 deletions

diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 4fc3960c8591..71864cddcb9d 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -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)
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
index e59e2f059b6e..fb9ef132f13b 100644
--- a/sound/pci/hda/hda_proc.c
+++ b/sound/pci/hda/hda_proc.c
@@ -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,