diff options
Diffstat (limited to 'sound/soc/sof/pm.c')
| -rw-r--r-- | sound/soc/sof/pm.c | 53 |
1 files changed, 36 insertions, 17 deletions
diff --git a/sound/soc/sof/pm.c b/sound/soc/sof/pm.c index 8722bbd7fd3d..8e3bcf602beb 100644 --- a/sound/soc/sof/pm.c +++ b/sound/soc/sof/pm.c @@ -3,7 +3,7 @@ // This file is provided under a dual BSD/GPLv2 license. When using or // redistributing this file, you may do so under either license. // -// Copyright(c) 2018 Intel Corporation. All rights reserved. +// Copyright(c) 2018 Intel Corporation // // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com> // @@ -73,8 +73,8 @@ static void sof_cache_debugfs(struct snd_sof_dev *sdev) static int sof_resume(struct device *dev, bool runtime_resume) { struct snd_sof_dev *sdev = dev_get_drvdata(dev); - const struct sof_ipc_pm_ops *pm_ops = sdev->ipc->ops->pm; - const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg; + const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm); + const struct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, tplg); u32 old_state = sdev->dsp_power_state.state; int ret; @@ -103,6 +103,11 @@ static int sof_resume(struct device *dev, bool runtime_resume) return ret; } + if (sdev->dspless_mode_selected) { + sof_set_fw_state(sdev, SOF_DSPLESS_MODE); + return 0; + } + /* * Nothing further to be done for platforms that support the low power * D0 substate. Resume trace and return when resuming from @@ -155,11 +160,11 @@ static int sof_resume(struct device *dev, bool runtime_resume) } /* restore pipelines */ - if (tplg_ops->set_up_all_pipelines) { + if (tplg_ops && tplg_ops->set_up_all_pipelines) { ret = tplg_ops->set_up_all_pipelines(sdev, false); if (ret < 0) { dev_err(sdev->dev, "Failed to restore pipeline after resume %d\n", ret); - return ret; + goto setup_fail; } } @@ -173,16 +178,29 @@ static int sof_resume(struct device *dev, bool runtime_resume) dev_err(sdev->dev, "ctx_restore IPC error during resume: %d\n", ret); } +setup_fail: +#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) + if (ret < 0) { + /* + * Debugfs cannot be read in runtime suspend, so cache + * the contents upon failure. This allows to capture + * possible DSP coredump information. + */ + sof_cache_debugfs(sdev); + } +#endif + return ret; } static int sof_suspend(struct device *dev, bool runtime_suspend) { struct snd_sof_dev *sdev = dev_get_drvdata(dev); - const struct sof_ipc_pm_ops *pm_ops = sdev->ipc->ops->pm; - const struct sof_ipc_tplg_ops *tplg_ops = sdev->ipc->ops->tplg; + const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm); + const struct sof_ipc_tplg_ops *tplg_ops = sof_ipc_get_ops(sdev, tplg); pm_message_t pm_state; u32 target_state = snd_sof_dsp_power_target(sdev); + u32 old_state = sdev->dsp_power_state.state; int ret; /* do nothing if dsp suspend callback is not set */ @@ -192,7 +210,12 @@ static int sof_suspend(struct device *dev, bool runtime_suspend) if (runtime_suspend && !sof_ops(sdev)->runtime_suspend) return 0; - if (tplg_ops && tplg_ops->tear_down_all_pipelines) + /* we need to tear down pipelines only if the DSP hardware is + * active, which happens for PCI devices. if the device is + * suspended, it is brought back to full power and then + * suspended again + */ + if (tplg_ops && tplg_ops->tear_down_all_pipelines && (old_state == SOF_DSP_PM_D0)) tplg_ops->tear_down_all_pipelines(sdev, false); if (sdev->fw_state != SOF_FW_BOOT_COMPLETE) @@ -211,20 +234,16 @@ static int sof_suspend(struct device *dev, bool runtime_suspend) pm_state.event = target_state; - /* Skip to platform-specific suspend if DSP is entering D0 */ - if (target_state == SOF_DSP_PM_D0) { - sof_fw_trace_suspend(sdev, pm_state); - /* Notify clients not managed by pm framework about core suspend */ - sof_suspend_clients(sdev, pm_state); - goto suspend; - } - /* suspend DMA trace */ sof_fw_trace_suspend(sdev, pm_state); /* Notify clients not managed by pm framework about core suspend */ sof_suspend_clients(sdev, pm_state); + /* Skip to platform-specific suspend if DSP is entering D0 */ + if (target_state == SOF_DSP_PM_D0) + goto suspend; + #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE) /* cache debugfs contents during runtime suspend */ if (runtime_suspend) @@ -276,7 +295,7 @@ suspend: int snd_sof_dsp_power_down_notify(struct snd_sof_dev *sdev) { - const struct sof_ipc_pm_ops *pm_ops = sdev->ipc->ops->pm; + const struct sof_ipc_pm_ops *pm_ops = sof_ipc_get_ops(sdev, pm); /* Notify DSP of upcoming power down */ if (sof_ops(sdev)->remove && pm_ops && pm_ops->ctx_save) |