diff options
| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-11-18 12:38:08 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-11-18 07:48:28 +0100 |
| commit | 83d605fd63e704419ccb92d48b735c6890ce3d6a (patch) | |
| tree | d05a3aecbcbdefe2b2b8a5e0b48abff37636961a /sound/pci/hda/hda_proc.c | |
| parent | 81bf31e2d0a6a9f5d83da0a757f8ca03db908162 (diff) | |
ALSA: hda - show EPSS capability in proc
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_proc.c')
| -rw-r--r-- | sound/pci/hda/hda_proc.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c index f465cff28041..09476fc1ab64 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 const char *get_pwr_state(u32 state) 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) >> |