ALSA: hda - show EPSS capability in proc
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index be6c5f4..2d62761 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -286,6 +286,10 @@
#define AC_PWRST_D1SUP (1<<1)
#define AC_PWRST_D2SUP (1<<2)
#define AC_PWRST_D3SUP (1<<3)
+#define AC_PWRST_D3COLDSUP (1<<4)
+#define AC_PWRST_S3D3COLDSUP (1<<29)
+#define AC_PWRST_CLKSTOP (1<<30)
+#define AC_PWRST_EPSS (1U<<31)
/* Power state values */
#define AC_PWRST_SETTING (0xf<<0)
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
index f465cff..09476fc 100644
--- a/sound/pci/hda/hda_proc.c
+++ b/sound/pci/hda/hda_proc.c
@@ -26,6 +26,21 @@
#include "hda_codec.h"
#include "hda_local.h"
+static char *bits_names(unsigned int bits, char *names[], int size)
+{
+ int i, n;
+ static char buf[128];
+
+ for (i = 0, n = 0; i < size; i++) {
+ if (bits & (1U<<i) && names[i])
+ n += snprintf(buf + n, sizeof(buf) - n, " %s",
+ names[i]);
+ }
+ buf[n] = '\0';
+
+ return buf;
+}
+
static const char *get_wid_type_name(unsigned int wid_value)
{
static char *names[16] = {
@@ -398,8 +413,24 @@
static void print_power_state(struct snd_info_buffer *buffer,
struct hda_codec *codec, hda_nid_t nid)
{
+ static char *names[] = {
+ [ilog2(AC_PWRST_D0SUP)] = "D0",
+ [ilog2(AC_PWRST_D1SUP)] = "D1",
+ [ilog2(AC_PWRST_D2SUP)] = "D2",
+ [ilog2(AC_PWRST_D3SUP)] = "D3",
+ [ilog2(AC_PWRST_D3COLDSUP)] = "D3cold",
+ [ilog2(AC_PWRST_S3D3COLDSUP)] = "S3D3cold",
+ [ilog2(AC_PWRST_CLKSTOP)] = "CLKSTOP",
+ [ilog2(AC_PWRST_EPSS)] = "EPSS",
+ };
+
+ int sup = snd_hda_param_read(codec, nid, AC_PAR_POWER_STATE);
int pwr = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_POWER_STATE, 0);
+ if (sup)
+ snd_iprintf(buffer, " Power states: %s\n",
+ bits_names(sup, names, ARRAY_SIZE(names)));
+
snd_iprintf(buffer, " Power: setting=%s, actual=%s\n",
get_pwr_state(pwr & AC_PWRST_SETTING),
get_pwr_state((pwr & AC_PWRST_ACTUAL) >>