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ALSA: hda: Release codec display power during shutdown/reboot 

Similarly to the previous patch for the HDA controller make sure here
that codecs also drop the display power reference during shutdown and
reboot.

This fixes a power ref leaked WARN in i915 during shutdown if the HDA
driver is built with CONFIG_PM=n.

Suggested-by: Takashi Iwai <tiwai@suse.de>
References: https://gitlab.freedesktop.org/drm/intel/-/issues/3618
References: https://lore.kernel.org/intel-gfx/s5hzgvhngw6.wl-tiwai@suse.de
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://lore.kernel.org/r/20210623134601.2128663-2-imre.deak@intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Imre Deak 2021-06-23 16:46:01 +03:00 committed by Takashi Iwai
parent 472e18f63c
commit 3099406ef4
3 changed files with 12 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sound/pci/hda/hda_bind.c
View File

@ -167,8 +167,11 @@ static void hda_codec_driver_shutdown(struct device *dev)
{
struct hda_codec *codec = dev_to_hda_codec(dev);
if (!pm_runtime_suspended(dev) && codec->patch_ops.reboot_notify)
codec->patch_ops.reboot_notify(codec);
if (!pm_runtime_suspended(dev)) {
if (codec->patch_ops.reboot_notify)
codec->patch_ops.reboot_notify(codec);
snd_hda_codec_display_power(codec, false);
}
}
int __hda_codec_driver_register(struct hda_codec_driver *drv, const char *name,

10
sound/pci/hda/hda_codec.c
View File

@ -798,7 +798,7 @@ static unsigned int hda_set_power_state(struct hda_codec *codec,
unsigned int power_state);
/* enable/disable display power per codec */
static void codec_display_power(struct hda_codec *codec, bool enable)
void snd_hda_codec_display_power(struct hda_codec *codec, bool enable)
{
if (codec->display_power_control)
snd_hdac_display_power(&codec->bus->core, codec->addr, enable);
@ -810,7 +810,7 @@ void snd_hda_codec_register(struct hda_codec *codec)
if (codec->registered)
return;
if (device_is_registered(hda_codec_dev(codec))) {
codec_display_power(codec, true);
snd_hda_codec_display_power(codec, true);
pm_runtime_enable(hda_codec_dev(codec));
/* it was powered up in snd_hda_codec_new(), now all done */
snd_hda_power_down(codec);
@ -836,7 +836,7 @@ static int snd_hda_codec_dev_free(struct snd_device *device)
*/
if (codec->core.type == HDA_DEV_LEGACY)
snd_hdac_device_unregister(&codec->core);
codec_display_power(codec, false);
snd_hda_codec_display_power(codec, false);
/*
* In the case of ASoC HD-audio bus, the device refcount is released in
@ -2893,7 +2893,7 @@ static int hda_codec_runtime_suspend(struct device *dev)
(codec_has_clkstop(codec) && codec_has_epss(codec) &&
(state & AC_PWRST_CLK_STOP_OK)))
snd_hdac_codec_link_down(&codec->core);
codec_display_power(codec, false);
snd_hda_codec_display_power(codec, false);
return 0;
}
@ -2905,7 +2905,7 @@ static int hda_codec_runtime_resume(struct device *dev)
if (!codec->card)
return 0;
codec_display_power(codec, true);
snd_hda_codec_display_power(codec, true);
snd_hdac_codec_link_up(&codec->core);
hda_call_codec_resume(codec);
pm_runtime_mark_last_busy(dev);

2
sound/pci/hda/hda_local.h
View File

@ -709,6 +709,8 @@ void snd_hdmi_write_eld_info(struct hdmi_eld *eld,
#define SND_PRINT_CHANNEL_ALLOCATION_ADVISED_BUFSIZE 80
void snd_print_channel_allocation(int spk_alloc, char *buf, int buflen);
void snd_hda_codec_display_power(struct hda_codec *codec, bool enable);
/*
*/
#define codec_err(codec, fmt, args...) \