From 3002b9fb7cbc26e8d29927c9e20e235f38319b24 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 13 Feb 2017 09:52:44 +0100 Subject: [PATCH] ALSA: x86: Use runtime PM autosuspend This patch adds a few lines to the driver to use autosuspend for the runtime PM. It'll become useful with the combination of the keep-link feature. Signed-off-by: Takashi Iwai --- sound/x86/intel_hdmi_audio.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/sound/x86/intel_hdmi_audio.c b/sound/x86/intel_hdmi_audio.c index 360cff35b239..d1504303adfb 100644 --- a/sound/x86/intel_hdmi_audio.c +++ b/sound/x86/intel_hdmi_audio.c @@ -1082,7 +1082,8 @@ static int had_pcm_open(struct snd_pcm_substream *substream) return retval; error: - pm_runtime_put(intelhaddata->dev); + pm_runtime_mark_last_busy(intelhaddata->dev); + pm_runtime_put_autosuspend(intelhaddata->dev); return retval; } @@ -1106,7 +1107,8 @@ static int had_pcm_close(struct snd_pcm_substream *substream) } spin_unlock_irq(&intelhaddata->had_spinlock); - pm_runtime_put(intelhaddata->dev); + pm_runtime_mark_last_busy(intelhaddata->dev); + pm_runtime_put_autosuspend(intelhaddata->dev); return 0; } @@ -1596,7 +1598,8 @@ static void had_audio_wq(struct work_struct *work) had_process_mode_change(ctx); } mutex_unlock(&ctx->mutex); - pm_runtime_put(ctx->dev); + pm_runtime_mark_last_busy(ctx->dev); + pm_runtime_put_autosuspend(ctx->dev); } /* @@ -1643,10 +1646,17 @@ static int __maybe_unused hdmi_lpe_audio_suspend(struct device *dev) return err; } +static int hdmi_lpe_audio_runtime_resume(struct device *dev) +{ + pm_runtime_mark_last_busy(dev); + return 0; +} + static int __maybe_unused hdmi_lpe_audio_resume(struct device *dev) { struct snd_intelhad *ctx = dev_get_drvdata(dev); + hdmi_lpe_audio_runtime_resume(dev); snd_power_change_state(ctx->card, SNDRV_CTL_POWER_D0); return 0; } @@ -1799,6 +1809,9 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev) pdata->notify_pending = false; spin_unlock_irq(&pdata->lpe_audio_slock); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_mark_last_busy(&pdev->dev); + pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev); @@ -1827,7 +1840,8 @@ static int hdmi_lpe_audio_remove(struct platform_device *pdev) static const struct dev_pm_ops hdmi_lpe_audio_pm = { SET_SYSTEM_SLEEP_PM_OPS(hdmi_lpe_audio_suspend, hdmi_lpe_audio_resume) - SET_RUNTIME_PM_OPS(hdmi_lpe_audio_runtime_suspend, NULL, NULL) + SET_RUNTIME_PM_OPS(hdmi_lpe_audio_runtime_suspend, + hdmi_lpe_audio_runtime_resume, NULL) }; static struct platform_driver hdmi_lpe_audio_driver = { -- 2.20.1