445 lines
10 KiB
C
445 lines
10 KiB
C
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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//
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#include "ops.h"
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#include "sof-priv.h"
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static int sof_restore_kcontrols(struct snd_sof_dev *sdev)
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{
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struct snd_sof_control *scontrol;
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int ipc_cmd, ctrl_type;
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int ret = 0;
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/* restore kcontrol values */
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list_for_each_entry(scontrol, &sdev->kcontrol_list, list) {
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/* reset readback offset for scontrol after resuming */
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scontrol->readback_offset = 0;
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/* notify DSP of kcontrol values */
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switch (scontrol->cmd) {
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case SOF_CTRL_CMD_VOLUME:
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case SOF_CTRL_CMD_ENUM:
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case SOF_CTRL_CMD_SWITCH:
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ipc_cmd = SOF_IPC_COMP_SET_VALUE;
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ctrl_type = SOF_CTRL_TYPE_VALUE_CHAN_SET;
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ret = snd_sof_ipc_set_get_comp_data(sdev->ipc, scontrol,
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ipc_cmd, ctrl_type,
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scontrol->cmd,
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true);
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break;
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case SOF_CTRL_CMD_BINARY:
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ipc_cmd = SOF_IPC_COMP_SET_DATA;
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ctrl_type = SOF_CTRL_TYPE_DATA_SET;
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ret = snd_sof_ipc_set_get_comp_data(sdev->ipc, scontrol,
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ipc_cmd, ctrl_type,
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scontrol->cmd,
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true);
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break;
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default:
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break;
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}
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed kcontrol value set for widget: %d\n",
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scontrol->comp_id);
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return ret;
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}
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}
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return 0;
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}
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static int sof_restore_pipelines(struct snd_sof_dev *sdev)
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{
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struct snd_sof_widget *swidget;
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struct snd_sof_route *sroute;
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struct sof_ipc_pipe_new *pipeline;
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struct snd_sof_dai *dai;
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struct sof_ipc_comp_dai *comp_dai;
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struct sof_ipc_cmd_hdr *hdr;
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int ret;
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/* restore pipeline components */
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list_for_each_entry_reverse(swidget, &sdev->widget_list, list) {
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struct sof_ipc_comp_reply r;
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/* skip if there is no private data */
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if (!swidget->private)
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continue;
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switch (swidget->id) {
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case snd_soc_dapm_dai_in:
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case snd_soc_dapm_dai_out:
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dai = swidget->private;
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comp_dai = &dai->comp_dai;
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ret = sof_ipc_tx_message(sdev->ipc,
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comp_dai->comp.hdr.cmd,
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comp_dai, sizeof(*comp_dai),
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&r, sizeof(r));
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break;
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case snd_soc_dapm_scheduler:
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/*
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* During suspend, all DSP cores are powered off.
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* Therefore upon resume, create the pipeline comp
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* and power up the core that the pipeline is
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* scheduled on.
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*/
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pipeline = swidget->private;
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ret = sof_load_pipeline_ipc(sdev, pipeline, &r);
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break;
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default:
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hdr = swidget->private;
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ret = sof_ipc_tx_message(sdev->ipc, hdr->cmd,
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swidget->private, hdr->size,
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&r, sizeof(r));
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break;
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}
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to load widget type %d with ID: %d\n",
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swidget->widget->id, swidget->comp_id);
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return ret;
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}
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}
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/* restore pipeline connections */
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list_for_each_entry_reverse(sroute, &sdev->route_list, list) {
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struct sof_ipc_pipe_comp_connect *connect;
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struct sof_ipc_reply reply;
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/* skip if there's no private data */
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if (!sroute->private)
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continue;
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connect = sroute->private;
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/* send ipc */
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ret = sof_ipc_tx_message(sdev->ipc,
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connect->hdr.cmd,
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connect, sizeof(*connect),
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&reply, sizeof(reply));
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to load route sink %s control %s source %s\n",
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sroute->route->sink,
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sroute->route->control ? sroute->route->control
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: "none",
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sroute->route->source);
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return ret;
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}
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}
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/* restore dai links */
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list_for_each_entry_reverse(dai, &sdev->dai_list, list) {
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struct sof_ipc_reply reply;
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struct sof_ipc_dai_config *config = dai->dai_config;
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if (!config) {
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dev_err(sdev->dev, "error: no config for DAI %s\n",
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dai->name);
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continue;
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}
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/*
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* The link DMA channel would be invalidated for running
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* streams but not for streams that were in the PAUSED
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* state during suspend. So invalidate it here before setting
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* the dai config in the DSP.
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*/
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if (config->type == SOF_DAI_INTEL_HDA)
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config->hda.link_dma_ch = DMA_CHAN_INVALID;
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ret = sof_ipc_tx_message(sdev->ipc,
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config->hdr.cmd, config,
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config->hdr.size,
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&reply, sizeof(reply));
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to set dai config for %s\n",
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dai->name);
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return ret;
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}
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}
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/* complete pipeline */
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list_for_each_entry(swidget, &sdev->widget_list, list) {
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switch (swidget->id) {
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case snd_soc_dapm_scheduler:
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swidget->complete =
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snd_sof_complete_pipeline(sdev, swidget);
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break;
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default:
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break;
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}
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}
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/* restore pipeline kcontrols */
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ret = sof_restore_kcontrols(sdev);
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if (ret < 0)
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dev_err(sdev->dev,
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"error: restoring kcontrols after resume\n");
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return ret;
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}
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static int sof_send_pm_ipc(struct snd_sof_dev *sdev, int cmd)
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{
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struct sof_ipc_pm_ctx pm_ctx;
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struct sof_ipc_reply reply;
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memset(&pm_ctx, 0, sizeof(pm_ctx));
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/* configure ctx save ipc message */
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pm_ctx.hdr.size = sizeof(pm_ctx);
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pm_ctx.hdr.cmd = SOF_IPC_GLB_PM_MSG | cmd;
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/* send ctx save ipc to dsp */
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return sof_ipc_tx_message(sdev->ipc, pm_ctx.hdr.cmd, &pm_ctx,
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sizeof(pm_ctx), &reply, sizeof(reply));
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}
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static int sof_set_hw_params_upon_resume(struct snd_sof_dev *sdev)
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{
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struct snd_pcm_substream *substream;
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struct snd_sof_pcm *spcm;
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snd_pcm_state_t state;
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int dir;
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/*
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* SOF requires hw_params to be set-up internally upon resume.
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* So, set the flag to indicate this for those streams that
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* have been suspended.
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*/
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list_for_each_entry(spcm, &sdev->pcm_list, list) {
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for (dir = 0; dir <= SNDRV_PCM_STREAM_CAPTURE; dir++) {
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substream = spcm->stream[dir].substream;
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if (!substream || !substream->runtime)
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continue;
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state = substream->runtime->status->state;
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if (state == SNDRV_PCM_STATE_SUSPENDED)
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spcm->prepared[dir] = false;
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}
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}
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/* set internal flag for BE */
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return snd_sof_dsp_hw_params_upon_resume(sdev);
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}
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE)
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static void sof_cache_debugfs(struct snd_sof_dev *sdev)
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{
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struct snd_sof_dfsentry *dfse;
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list_for_each_entry(dfse, &sdev->dfsentry_list, list) {
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/* nothing to do if debugfs buffer is not IO mem */
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if (dfse->type == SOF_DFSENTRY_TYPE_BUF)
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continue;
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/* cache memory that is only accessible in D0 */
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if (dfse->access_type == SOF_DEBUGFS_ACCESS_D0_ONLY)
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memcpy_fromio(dfse->cache_buf, dfse->io_mem,
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dfse->size);
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}
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}
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#endif
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static int sof_resume(struct device *dev, bool runtime_resume)
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{
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struct snd_sof_dev *sdev = dev_get_drvdata(dev);
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int ret;
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/* do nothing if dsp resume callbacks are not set */
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if (!sof_ops(sdev)->resume || !sof_ops(sdev)->runtime_resume)
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return 0;
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/* DSP was never successfully started, nothing to resume */
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if (sdev->first_boot)
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return 0;
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/*
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* if the runtime_resume flag is set, call the runtime_resume routine
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* or else call the system resume routine
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*/
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if (runtime_resume)
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ret = snd_sof_dsp_runtime_resume(sdev);
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else
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ret = snd_sof_dsp_resume(sdev);
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to power up DSP after resume\n");
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return ret;
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}
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sdev->fw_state = SOF_FW_BOOT_PREPARE;
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/* load the firmware */
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ret = snd_sof_load_firmware(sdev);
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to load DSP firmware after resume %d\n",
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ret);
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return ret;
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}
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sdev->fw_state = SOF_FW_BOOT_IN_PROGRESS;
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/*
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* Boot the firmware. The FW boot status will be modified
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* in snd_sof_run_firmware() depending on the outcome.
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*/
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ret = snd_sof_run_firmware(sdev);
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to boot DSP firmware after resume %d\n",
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ret);
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return ret;
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}
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/* resume DMA trace, only need send ipc */
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ret = snd_sof_init_trace_ipc(sdev);
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if (ret < 0) {
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/* non fatal */
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dev_warn(sdev->dev,
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"warning: failed to init trace after resume %d\n",
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ret);
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}
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/* restore pipelines */
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ret = sof_restore_pipelines(sdev);
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to restore pipeline after resume %d\n",
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ret);
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return ret;
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}
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/* notify DSP of system resume */
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ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_RESTORE);
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if (ret < 0)
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dev_err(sdev->dev,
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"error: ctx_restore ipc error during resume %d\n",
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ret);
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return ret;
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}
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static int sof_suspend(struct device *dev, bool runtime_suspend)
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{
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struct snd_sof_dev *sdev = dev_get_drvdata(dev);
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int ret;
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/* do nothing if dsp suspend callback is not set */
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if (!sof_ops(sdev)->suspend)
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return 0;
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if (sdev->fw_state != SOF_FW_BOOT_COMPLETE)
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goto power_down;
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/* release trace */
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snd_sof_release_trace(sdev);
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/* set restore_stream for all streams during system suspend */
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if (!runtime_suspend) {
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ret = sof_set_hw_params_upon_resume(sdev);
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: setting hw_params flag during suspend %d\n",
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ret);
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return ret;
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}
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}
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE)
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/* cache debugfs contents during runtime suspend */
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if (runtime_suspend)
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sof_cache_debugfs(sdev);
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#endif
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/* notify DSP of upcoming power down */
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ret = sof_send_pm_ipc(sdev, SOF_IPC_PM_CTX_SAVE);
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if (ret == -EBUSY || ret == -EAGAIN) {
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/*
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* runtime PM has logic to handle -EBUSY/-EAGAIN so
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* pass these errors up
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*/
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dev_err(sdev->dev,
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"error: ctx_save ipc error during suspend %d\n",
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ret);
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return ret;
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} else if (ret < 0) {
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/* FW in unexpected state, continue to power down */
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dev_warn(sdev->dev,
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"ctx_save ipc error %d, proceeding with suspend\n",
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ret);
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}
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power_down:
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/* return if the DSP was not probed successfully */
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if (sdev->fw_state == SOF_FW_BOOT_NOT_STARTED)
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return 0;
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/* power down all DSP cores */
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if (runtime_suspend)
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ret = snd_sof_dsp_runtime_suspend(sdev);
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else
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ret = snd_sof_dsp_suspend(sdev);
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if (ret < 0)
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dev_err(sdev->dev,
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"error: failed to power down DSP during suspend %d\n",
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ret);
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/* reset FW state */
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sdev->fw_state = SOF_FW_BOOT_NOT_STARTED;
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return ret;
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}
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int snd_sof_runtime_suspend(struct device *dev)
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{
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return sof_suspend(dev, true);
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}
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EXPORT_SYMBOL(snd_sof_runtime_suspend);
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int snd_sof_runtime_idle(struct device *dev)
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{
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struct snd_sof_dev *sdev = dev_get_drvdata(dev);
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return snd_sof_dsp_runtime_idle(sdev);
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}
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EXPORT_SYMBOL(snd_sof_runtime_idle);
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int snd_sof_runtime_resume(struct device *dev)
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{
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return sof_resume(dev, true);
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}
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EXPORT_SYMBOL(snd_sof_runtime_resume);
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int snd_sof_resume(struct device *dev)
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{
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return sof_resume(dev, false);
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}
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EXPORT_SYMBOL(snd_sof_resume);
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int snd_sof_suspend(struct device *dev)
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{
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return sof_suspend(dev, false);
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}
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EXPORT_SYMBOL(snd_sof_suspend);
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