From: Takashi Iwai <tiwai@suse.de>
To: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Cc: Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
<alsa-devel@alsa-project.org>, <patches@opensource.cirrus.com>,
<linux-kernel@vger.kernel.org>,
Stefan Binding <sbinding@opensource.cirrus.com>
Subject: Re: [PATCH 4/4] ALSA: hda/cirrus: Add Headphone and Headset MIC Volume Control
Date: Thu, 04 Mar 2021 14:49:31 +0100 [thread overview]
Message-ID: <s5h5z279ggk.wl-tiwai@suse.de> (raw)
In-Reply-To: <20210303182959.5322-5-vitalyr@opensource.cirrus.com>
On Wed, 03 Mar 2021 19:29:59 +0100,
Vitaly Rodionov wrote:
>
> +static int cs8409_cs42l42_volume_get(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> + struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
> + hda_nid_t nid = get_amp_nid(kcontrol);
> + int chs = get_amp_channels(kcontrol);
> + long *valp = ucontrol->value.integer.value;
> + char vol = 0;
> +
> + codec_dbg(codec, "%s() nid: %d\n", __func__, nid);
> + snd_hda_power_up(codec);
> + switch (nid) {
> + case CS8409_CS42L42_HP_PIN_NID:
> + mutex_lock(&cs8409_i2c_mux);
> + if (chs & 1) {
> + vol = -(cs8409_i2c_read(codec, CS42L42_I2C_ADDR,
> + CS8409_CS42L42_REG_HS_VOLUME_CHA, 1));
Better to cache the values instead of i2c read at each time?
Then the unnecessary power up/down sequence can be avoided, too.
thanks,
Takashi
next prev parent reply other threads:[~2021-03-04 13:51 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 18:29 [PATCH 0/4] ALSA: hda/cirrus: Add support for CS8409 HDA bridge and CS42L42 companion codec Vitaly Rodionov
2021-03-03 18:29 ` [PATCH 1/4] ALSA: hda/cirrus: Increase AUTO_CFG_MAX_INS from 8 to 18 Vitaly Rodionov
2021-03-03 18:29 ` [PATCH 2/4] ALSA: hda/cirrus: Add support for CS8409 HDA bridge and CS42L42 companion codec Vitaly Rodionov
2021-03-04 13:39 ` Takashi Iwai
2021-03-04 18:36 ` Vitaly Rodionov
2021-03-03 18:29 ` [PATCH 3/4] ALSA: hda/cirrus: Add jack detect interrupt support from " Vitaly Rodionov
2021-03-04 13:45 ` Takashi Iwai
2021-03-04 18:44 ` Vitaly Rodionov
2021-03-03 18:29 ` [PATCH 4/4] ALSA: hda/cirrus: Add Headphone and Headset MIC Volume Control Vitaly Rodionov
2021-03-04 13:49 ` Takashi Iwai [this message]
2021-03-04 18:45 ` Vitaly Rodionov
-- strict thread matches above, loose matches on Subject: below --
2021-03-03 18:53 [PATCH 0/4] ALSA: hda/cirrus: Add support for CS8409 HDA bridge and CS42L42 companion codec Vitaly Rodionov
2021-03-03 18:53 ` [PATCH 4/4] ALSA: hda/cirrus: Add Headphone and Headset MIC Volume Control Vitaly Rodionov
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