The patch ASoC: SOF: Intel: hda-ipc: read all IPC registers first has been applied to the asoc tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 5dbeb8287421984a09c92a79c503f8bd41cf3fe7 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> Date: Mon, 3 Jun 2019 11:20:29 -0500 Subject: [PATCH] ASoC: SOF: Intel: hda-ipc: read all IPC registers first Align with hardware recommended sequences, and read all IPC registers before doing any other actions. Playing with BUSY and DONE bits may invalidate values. The values read may not actually be necessary but at least this provides a snapshot of the IPC registers with no consistency issues. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- sound/soc/sof/intel/hda-ipc.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/sound/soc/sof/intel/hda-ipc.c b/sound/soc/sof/intel/hda-ipc.c index 728dd1e075a4..1f01897fa6e3 100644 --- a/sound/soc/sof/intel/hda-ipc.c +++ b/sound/soc/sof/intel/hda-ipc.c @@ -145,6 +145,8 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context) HDA_DSP_REG_HIPCIE); hipct = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCT); hipcctl = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCCTL); + hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCI); + hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, HDA_DSP_REG_HIPCTE); /* reenable IPC interrupt */ snd_sof_dsp_update_bits(sdev, HDA_DSP_BAR, HDA_DSP_REG_ADSPIC, @@ -153,8 +155,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context) /* is this a reply message from the DSP */ if (hipcie & HDA_DSP_REG_HIPCIE_DONE && hipcctl & HDA_DSP_REG_HIPCCTL_DONE) { - hipci = snd_sof_dsp_read(sdev, HDA_DSP_BAR, - HDA_DSP_REG_HIPCI); msg = hipci & HDA_DSP_REG_HIPCI_MSG_MASK; msg_ext = hipcie & HDA_DSP_REG_HIPCIE_MSG_MASK; @@ -202,9 +202,6 @@ irqreturn_t hda_dsp_ipc_irq_thread(int irq, void *context) /* is this a new message from DSP */ if (hipct & HDA_DSP_REG_HIPCT_BUSY && hipcctl & HDA_DSP_REG_HIPCCTL_BUSY) { - - hipcte = snd_sof_dsp_read(sdev, HDA_DSP_BAR, - HDA_DSP_REG_HIPCTE); msg = hipct & HDA_DSP_REG_HIPCT_MSG_MASK; msg_ext = hipcte & HDA_DSP_REG_HIPCTE_MSG_MASK; -- 2.20.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
