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Commit 83d605fd authored by Wu Fengguang's avatar Wu Fengguang Committed by Takashi Iwai
Browse files

ALSA: hda - show EPSS capability in proc 



Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 81bf31e2

sound/pci/hda/hda_codec.h

+4 −0
Original line number Original line Diff line number Diff line
@@ -286,6 +286,10 @@ enum { 
#define AC_PWRST_D1SUP			(1<<1)

#define AC_PWRST_D1SUP			(1<<1)

#define AC_PWRST_D2SUP			(1<<2)

#define AC_PWRST_D2SUP			(1<<2)

#define AC_PWRST_D3SUP			(1<<3)

#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 */

/* Power state values */

#define AC_PWRST_SETTING		(0xf<<0)

#define AC_PWRST_SETTING		(0xf<<0)

sound/pci/hda/hda_proc.c

+31 −0
Original line number Original line Diff line number Diff line
@@ -26,6 +26,21 @@ 
#include "hda_codec.h"

#include "hda_codec.h"

#include "hda_local.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 const char *get_wid_type_name(unsigned int wid_value)

{

{

	static char *names[16] = {

	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,

static void print_power_state(struct snd_info_buffer *buffer,

			      struct hda_codec *codec, hda_nid_t nid)

			      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,

	int pwr = snd_hda_codec_read(codec, nid, 0,

				     AC_VERB_GET_POWER_STATE, 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",

	snd_iprintf(buffer, "  Power: setting=%s, actual=%s\n",

		    get_pwr_state(pwr & AC_PWRST_SETTING),

		    get_pwr_state(pwr & AC_PWRST_SETTING),

		    get_pwr_state((pwr & AC_PWRST_ACTUAL) >>

		    get_pwr_state((pwr & AC_PWRST_ACTUAL) >>