1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
12 #include "sof-priv.h"
13 #include "sof-audio.h"
16  * Helper function to determine the target DSP state during
18  * D-states. Platform-specific substates, if any, should be
19  * handled by the platform-specific parts.
25 	switch (sdev->system_suspend_target) {  in snd_sof_dsp_power_target()
27 		/* DSP should be in D3 if the system is suspending to S3 */  in snd_sof_dsp_power_target()
32 		 * Currently, the only criterion for retaining the DSP in D0  in snd_sof_dsp_power_target()
34 		 * Additional criteria such Soundwire clock-stop mode and  in snd_sof_dsp_power_target()
62 	/* send ctx save ipc to dsp */  in sof_send_pm_ctx_ipc()
63 	return sof_ipc_tx_message(sdev->ipc, pm_ctx.hdr.cmd, &pm_ctx,  in sof_send_pm_ctx_ipc()
72 	list_for_each_entry(dfse, &sdev->dfsentry_list, list) {  in sof_cache_debugfs()
75 		if (dfse->type == SOF_DFSENTRY_TYPE_BUF)  in sof_cache_debugfs()
79 		if (dfse->access_type == SOF_DEBUGFS_ACCESS_D0_ONLY)  in sof_cache_debugfs()
80 			memcpy_fromio(dfse->cache_buf, dfse->io_mem,  in sof_cache_debugfs()
81 				      dfse->size);  in sof_cache_debugfs()
89 	u32 old_state = sdev->dsp_power_state.state;  in sof_resume()
92 	/* do nothing if dsp resume callbacks are not set */  in sof_resume()
93 	if (!runtime_resume && !sof_ops(sdev)->resume)  in sof_resume()
96 	if (runtime_resume && !sof_ops(sdev)->runtime_resume)  in sof_resume()
99 	/* DSP was never successfully started, nothing to resume */  in sof_resume()
100 	if (sdev->first_boot)  in sof_resume()
112 		dev_err(sdev->dev,  in sof_resume()
113 			"error: failed to power up DSP after resume\n");  in sof_resume()
121 	if (!runtime_resume && sof_ops(sdev)->set_power_state &&  in sof_resume()
125 	sdev->fw_state = SOF_FW_BOOT_PREPARE;  in sof_resume()
130 		dev_err(sdev->dev,  in sof_resume()
131 			"error: failed to load DSP firmware after resume %d\n",  in sof_resume()
136 	sdev->fw_state = SOF_FW_BOOT_IN_PROGRESS;  in sof_resume()
144 		dev_err(sdev->dev,  in sof_resume()
145 			"error: failed to boot DSP firmware after resume %d\n",  in sof_resume()
154 		dev_warn(sdev->dev,  in sof_resume()
160 	ret = sof_restore_pipelines(sdev->dev);  in sof_resume()
162 		dev_err(sdev->dev,  in sof_resume()
168 	/* notify DSP of system resume */  in sof_resume()
171 		dev_err(sdev->dev,  in sof_resume()
184 	/* do nothing if dsp suspend callback is not set */  in sof_suspend()
185 	if (!runtime_suspend && !sof_ops(sdev)->suspend)  in sof_suspend()
188 	if (runtime_suspend && !sof_ops(sdev)->runtime_suspend)  in sof_suspend()
191 	if (sdev->fw_state != SOF_FW_BOOT_COMPLETE)  in sof_suspend()
196 		ret = sof_set_hw_params_upon_resume(sdev->dev);  in sof_suspend()
198 			dev_err(sdev->dev,  in sof_suspend()
207 	/* Skip to platform-specific suspend if DSP is entering D0 */  in sof_suspend()
219 	/* notify DSP of upcoming power down */  in sof_suspend()
221 	if (ret == -EBUSY || ret == -EAGAIN) {  in sof_suspend()
223 		 * runtime PM has logic to handle -EBUSY/-EAGAIN so  in sof_suspend()
226 		dev_err(sdev->dev,  in sof_suspend()
232 		dev_warn(sdev->dev,  in sof_suspend()
239 	/* return if the DSP was not probed successfully */  in sof_suspend()
240 	if (sdev->fw_state == SOF_FW_BOOT_NOT_STARTED)  in sof_suspend()
243 	/* platform-specific suspend */  in sof_suspend()
249 		dev_err(sdev->dev,  in sof_suspend()
250 			"error: failed to power down DSP during suspend %d\n",  in sof_suspend()
253 	/* Do not reset FW state if DSP is in D0 */  in sof_suspend()
257 	/* reset FW state */  in sof_suspend()
258 	sdev->fw_state = SOF_FW_BOOT_NOT_STARTED;  in sof_suspend()
259 	sdev->enabled_cores_mask = 0;  in sof_suspend()
266 	/* Notify DSP of upcoming power down */  in snd_sof_dsp_power_down_notify()
267 	if (sof_ops(sdev)->remove)  in snd_sof_dsp_power_down_notify()
308 	const struct sof_dev_desc *desc = sdev->pdata->desc;  in snd_sof_prepare()
311 	sdev->system_suspend_target = SOF_SUSPEND_S3;  in snd_sof_prepare()
313 	if (!desc->use_acpi_target_states)  in snd_sof_prepare()
318 		sdev->system_suspend_target = SOF_SUSPEND_S0IX;  in snd_sof_prepare()
329 	sdev->system_suspend_target = SOF_SUSPEND_NONE;  in snd_sof_complete()