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ASoC: SOF: Intel: lnl: add helper to detect SoundWire wakes

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The global STATESTS register will provide information on all
links. Rather than iterate on all possible links, the helpers only
filters the range of possible bits for a quick lookup. The
process_wakeen() helper will walk through all the links and deal with
wakes.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Link: https://msgid.link/r/20240404190357.138073-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2024-04-04 14:03:55 -05:00 committed by Mark Brown
parent bd5863f9ef
commit ab9182441e
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1 changed files with 18 additions and 0 deletions
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18
sound/soc/sof/intel/lnl.c
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@ -189,6 +189,23 @@ static int lnl_dsp_disable_interrupts(struct snd_sof_dev *sdev)
return mtl_enable_interrupts(sdev, false);
}
static bool lnl_sdw_check_wakeen_irq(struct snd_sof_dev *sdev)
{
struct hdac_bus *bus = sof_to_bus(sdev);
u16 wake_sts;
/*
* we need to use the global HDaudio WAKEEN/STS to be able to
* detect wakes in low-power modes. The link-specific information
* is handled in the process_wakeen() helper, this helper only
* detects a SoundWire wake without identifying the link.
*/
wake_sts = snd_hdac_chip_readw(bus, STATESTS);
/* filter out the range of SDIs that can be set for SoundWire */
return wake_sts & GENMASK(SDW_MAX_DEVICES, SDW_INTEL_DEV_NUM_IDA_MIN);
}
const struct sof_intel_dsp_desc lnl_chip_info = {
.cores_num = 5,
.init_core_mask = BIT(0),
@ -205,6 +222,7 @@ const struct sof_intel_dsp_desc lnl_chip_info = {
.read_sdw_lcount = hda_sdw_check_lcount_ext,
.enable_sdw_irq = lnl_enable_sdw_irq,
.check_sdw_irq = lnl_dsp_check_sdw_irq,
.check_sdw_wakeen_irq = lnl_sdw_check_wakeen_irq,
.check_ipc_irq = mtl_dsp_check_ipc_irq,
.cl_init = mtl_dsp_cl_init,
.power_down_dsp = mtl_power_down_dsp,