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ALSA: hda - Power down codec automatically at registration

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So far, we let the controller driver power down the all codecs at the
end of probe.  But this can be done better in the codec's dev_register
callback.  This results in the reduction of duplicated codes in each
control driver.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-02-20 09:58:14 +01:00
parent 55ed9cd1fe
commit 709949fbe9
3 changed files with 3 additions and 28 deletions
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5
sound/pci/hda/hda_codec.c
View File

@ -1163,6 +1163,8 @@ static int snd_hda_codec_dev_register(struct snd_device *device)
snd_hda_register_beep_device(codec);
if (device_is_registered(hda_codec_dev(codec)))
pm_runtime_enable(hda_codec_dev(codec));
/* it was powered up in snd_hda_codec_new(), now all done */
snd_hda_power_down(codec);
return 0;
}
@ -1260,8 +1262,7 @@ int snd_hda_codec_new(struct hda_bus *bus,
#ifdef CONFIG_PM
/* snd_hda_codec_new() marks the codec as power-up, and leave it as is.
* the caller has to power down appropriatley after initialization
* phase.
* it's powered down later in snd_hda_codec_dev_register().
*/
set_bit(codec->addr, &bus->codec_powered);
pm_runtime_set_active(hda_codec_dev(codec));

14
sound/pci/hda/hda_intel.c
View File

@ -1604,19 +1604,6 @@ static int azx_first_init(struct azx *chip)
return 0;
}
static void power_down_all_codecs(struct azx *chip)
{
#ifdef CONFIG_PM
/* The codecs were powered up in snd_hda_codec_new().
* Now all initialization done, so turn them down if possible
*/
struct hda_codec *codec;
list_for_each_entry(codec, &chip->bus->codec_list, list) {
snd_hda_power_down(codec);
}
#endif
}
#ifdef CONFIG_SND_HDA_PATCH_LOADER
/* callback from request_firmware_nowait() */
static void azx_firmware_cb(const struct firmware *fw, void *context)
@ -1926,7 +1913,6 @@ static int azx_probe_continue(struct azx *chip)
goto out_free;
chip->running = 1;
power_down_all_codecs(chip);
azx_notifier_register(chip);
azx_add_card_list(chip);
snd_hda_set_power_save(chip->bus, power_save * 1000);

12
sound/pci/hda/hda_tegra.c
View File

@ -337,17 +337,6 @@ static int hda_tegra_init_chip(struct azx *chip, struct platform_device *pdev)
return 0;
}
/*
* The codecs were powered up in snd_hda_codec_new().
* Now all initialization done, so turn them down if possible
*/
static void power_down_all_codecs(struct azx *chip)
{
struct hda_codec *codec;
list_for_each_entry(codec, &chip->bus->codec_list, list)
snd_hda_power_down(codec);
}
static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev)
{
struct snd_card *card = chip->card;
@ -523,7 +512,6 @@ static int hda_tegra_probe(struct platform_device *pdev)
goto out_free;
chip->running = 1;
power_down_all_codecs(chip);
azx_notifier_register(chip);
snd_hda_set_power_save(chip->bus, power_save * 1000);