Signed-off-by: Wu Fengguang fengguang.wu@intel.com --- sound/pci/hda/hda_codec.h | 4 ++++ sound/pci/hda/hda_proc.c | 31 +++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+)
--- sound-2.6.orig/sound/pci/hda/hda_codec.h 2009-11-15 19:28:28.000000000 +0800 +++ sound-2.6/sound/pci/hda/hda_codec.h 2009-11-15 19:28:57.000000000 +0800 @@ -286,6 +286,10 @@ enum { #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) --- sound-2.6.orig/sound/pci/hda/hda_proc.c 2009-11-15 19:28:28.000000000 +0800 +++ sound-2.6/sound/pci/hda/hda_proc.c 2009-11-15 19:31:44.000000000 +0800 @@ -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] = { @@ -363,8 +378,24 @@ static const char *get_pwr_state(u32 sta 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) >>