From: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx>
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 <ranjani.sridharan@xxxxxxxxxxxxxxx>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Signed-off-by: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
sound/soc/sof/intel/hda-loader.c | 38 ++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff --git a/sound/soc/sof/intel/hda-loader.c b/sound/soc/sof/intel/hda-loader.c
index 7f1b1d0f2422..baf2ff146f50 100644
--- a/sound/soc/sof/intel/hda-loader.c
+++ b/sound/soc/sof/intel/hda-loader.c
@@ -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) {
--
2.25.1
