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ASoC: SOF: Intel: hda-loader: add IMR restore support

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If the firmware declares the IMR restore feature, we only need to do a
simple powering up to resume from D3, no firmware re-downloading
needed - the context is saved/restored to/from IMR without needing
driver support.

Add a hda_dsp_boot_imr() helper for this simple DSP reboot, and use it
when it is available.

Reviewed-by: Ranjani Sridharan <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Signed-off-by: Keyon Jie <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
Keyon Jie authored and Mark Brown committed 2022-01-24 13:31:17 +00:00
1 parent a749d74456
commit 5fb5f51185
1 file changed
+38
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sound/soc/sof/intel/hda-loader.c
+38
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@@ -353,6 +353,38 @@ int hda_dsp_cl_boot_firmware_iccmax(struct snd_sof_dev *sdev)
return ret;
}
static int hda_dsp_boot_imr(struct snd_sof_dev *sdev)
{
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
const struct sof_intel_dsp_desc *chip = hda->desc;
unsigned long mask;
u32 j;
int ret;
/* power up & unstall/run the cores to run the firmware */
ret = hda_dsp_enable_core(sdev, chip->init_core_mask);
if (ret < 0) {
dev_err(sdev->dev, "dsp core start failed %d\n", ret);
return -EIO;
}
/* set enabled cores mask and increment ref count for cores in init_core_mask */
sdev->enabled_cores_mask |= chip->init_core_mask;
mask = sdev->enabled_cores_mask;
for_each_set_bit(j, &mask, SOF_MAX_DSP_NUM_CORES)
sdev->dsp_core_ref_count[j]++;
hda_ssp_set_cbp_cfp(sdev);
/* enable IPC interrupts */
hda_dsp_ipc_int_enable(sdev);
/* process wakes */
hda_sdw_process_wakeen(sdev);
return ret;
}
int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev)
{
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
@@ -363,6 +395,12 @@ int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev)
struct firmware stripped_firmware;
int ret, ret1, i;
if ((sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT) &&
!sdev->first_boot) {
dev_dbg(sdev->dev, "IMR restore supported, booting from IMR directly\n");
return hda_dsp_boot_imr(sdev);
}
chip_info = desc->chip_info;
if (plat_data->fw->size <= plat_data->fw_offset) {