diff options
| author | Ranjani Sridharan <ranjani.sridharan@linux.intel.com> | 2020-01-30 01:07:25 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-02-11 14:48:07 +0300 |
| commit | 63e51fd33fef04b634a0c32ae491ab16a19cb17c (patch) | |
| tree | 5996a950867d6a946d4404100ff2950e34d17563 /sound/soc/sof/intel/hda.c | |
| parent | 207bf12f642f39e749ca65d3efca9d48311e629f (diff) | |
| download | linux-63e51fd33fef04b634a0c32ae491ab16a19cb17c.tar.xz | |
ASoC: SOF: Intel: cnl: Implement feature to support DSP D0i3 in S0
This patch implements support for DSP D0i3 when the system
is in S0. The basic idea is to schedule a delayed work after
every successful IPC TX that checks if there are only
D0I3-compatible streams active and if so transition
the DSP to D0I3.
With the introduction of DSP D0I3 in S0, we need to
ensure that the DSP is in D0I0 before sending any new
IPCs. The exception for this would be the
compact IPCs that are used to set the DSP in
D0I3/D0I0 states.
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200129220726.31792-9-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/intel/hda.c')
| -rw-r--r-- | sound/soc/sof/intel/hda.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 65b86dd044f1..2b8754a76584 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -598,6 +598,8 @@ int hda_dsp_probe(struct snd_sof_dev *sdev) /* set default mailbox offset for FW ready message */ sdev->dsp_box.offset = HDA_DSP_MBOX_UPLINK_OFFSET; + INIT_DELAYED_WORK(&hdev->d0i3_work, hda_dsp_d0i3_work); + return 0; free_ipc_irq: @@ -622,6 +624,9 @@ int hda_dsp_remove(struct snd_sof_dev *sdev) struct pci_dev *pci = to_pci_dev(sdev->dev); const struct sof_intel_dsp_desc *chip = hda->desc; + /* cancel any attempt for DSP D0I3 */ + cancel_delayed_work_sync(&hda->d0i3_work); + #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) /* codec removal, invoke bus_device_remove */ snd_hdac_ext_bus_device_remove(bus); |