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Commit c882246d authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: hda/idt - Cache the power-map bits 



For avoiding unnecessary codec read/write verbs at each jack detection.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent bfc89dec

sound/pci/hda/patch_sigmatel.c

+18 −3
Original line number Diff line number Diff line
@@ -222,6 +222,7 @@ struct sigmatel_spec { 
	unsigned char aloopback_shift;



	/* power management */

	unsigned int power_map_bits;

	unsigned int num_pwrs;

	const hda_nid_t *pwr_nids;

	const hda_nid_t *dac_list;
@@ -315,6 +316,9 @@ struct sigmatel_spec { 
	struct hda_vmaster_mute_hook vmaster_mute;

};



#define AC_VERB_IDT_SET_POWER_MAP	0x7ec

#define AC_VERB_IDT_GET_POWER_MAP	0xfec



static const hda_nid_t stac9200_adc_nids[1] = {

        0x03,

};
@@ -4406,6 +4410,12 @@ static int stac92xx_init(struct hda_codec *codec) 


	/* sync mute LED */

	snd_hda_sync_vmaster_hook(&spec->vmaster_mute);



	/* sync the power-map */

	if (spec->num_pwrs)

		snd_hda_codec_write(codec, codec->afg, 0,

				    AC_VERB_IDT_SET_POWER_MAP,

				    spec->power_map_bits);

	if (spec->dac_list)

		stac92xx_power_down(codec);

	return 0;
@@ -4651,14 +4661,18 @@ static void stac_toggle_power_map(struct hda_codec *codec, hda_nid_t nid, 


	idx = 1 << idx;



	val = snd_hda_codec_read(codec, codec->afg, 0, 0x0fec, 0x0) & 0xff;

	val = spec->power_map_bits;

	if (enable)

		val &= ~idx;

	else

		val |= idx;



	/* power down unused output ports */

	snd_hda_codec_write(codec, codec->afg, 0, 0x7ec, val);

	if (val != spec->power_map_bits) {

		spec->power_map_bits = val;

		snd_hda_codec_write(codec, codec->afg, 0,

				    AC_VERB_IDT_SET_POWER_MAP, val);

	}

}



static void stac92xx_pin_sense(struct hda_codec *codec, hda_nid_t nid)
@@ -4926,7 +4940,8 @@ static void stac92hd_proc_hook(struct snd_info_buffer *buffer, 
{

	if (nid == codec->afg)

		snd_iprintf(buffer, "Power-Map: 0x%02x\n", 

			    snd_hda_codec_read(codec, nid, 0, 0x0fec, 0x0));

			    snd_hda_codec_read(codec, nid, 0,

					       AC_VERB_IDT_GET_POWER_MAP, 0));

}



static void analog_loop_proc_hook(struct snd_info_buffer *buffer,