[PATCH] ASoC: qdsp6: audioreach: Add ADSP ready check

[PATCH] ASoC: qdsp6: audioreach: Add ADSP ready check

[Srinivasa Rao Mandadapu]

Check for SPF readiness in prm driver probe to avoid race conditions
during ADSP pil loading.
This patch is to avoid, sending requests to ADSP before it's
power domains are up and ready.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Tested-by: Ratna Deepthi Kudaravalli <rkudarav@qti.qualcomm.com>
---
 sound/soc/qcom/qdsp6/q6apm.c | 13 +++++++++++++
 sound/soc/qcom/qdsp6/q6apm.h |  2 ++
 sound/soc/qcom/qdsp6/q6prm.c |  4 ++++
 3 files changed, 19 insertions(+)

diff --git a/sound/soc/qcom/qdsp6/q6apm.c b/sound/soc/qcom/qdsp6/q6apm.c
index 5beb898..8a7dfd2 100644
--- a/sound/soc/qcom/qdsp6/q6apm.c
+++ b/sound/soc/qcom/qdsp6/q6apm.c
@@ -27,6 +27,8 @@ struct apm_graph_mgmt_cmd {
 
 #define APM_GRAPH_MGMT_PSIZE(p, n) ALIGN(struct_size(p, sub_graph_id_list, n), 8)
 
+struct q6apm *g_apm;
+
 int q6apm_send_cmd_sync(struct q6apm *apm, struct gpr_pkt *pkt, uint32_t rsp_opcode)
 {
 	gpr_device_t *gdev = apm->gdev;
@@ -143,6 +145,15 @@ static void q6apm_put_audioreach_graph(struct kref *ref)
 	kfree(graph);
 }
 
+bool q6apm_is_adsp_ready(void)
+{
+	if (g_apm && g_apm->state)
+		return true;
+
+	return false;
+}
+EXPORT_SYMBOL_GPL(q6apm_is_adsp_ready);
+
 static int q6apm_get_apm_state(struct q6apm *apm)
 {
 	struct gpr_pkt *pkt;
@@ -658,6 +669,8 @@ static int apm_probe(gpr_device_t *gdev)
 
 	idr_init(&apm->modules_idr);
 
+	g_apm = apm;
+
 	q6apm_get_apm_state(apm);
 
 	ret = devm_snd_soc_register_component(dev, &q6apm_audio_component, NULL, 0);
diff --git a/sound/soc/qcom/qdsp6/q6apm.h b/sound/soc/qcom/qdsp6/q6apm.h
index 273f978..7005be9 100644
--- a/sound/soc/qcom/qdsp6/q6apm.h
+++ b/sound/soc/qcom/qdsp6/q6apm.h
@@ -145,4 +145,6 @@ struct audioreach_module *q6apm_find_module_by_mid(struct q6apm_graph *graph,
 void q6apm_set_fe_dai_ops(struct snd_soc_dai_driver *dai_drv);
 int q6apm_graph_get_rx_shmem_module_iid(struct q6apm_graph *graph);
 
+bool q6apm_is_adsp_ready(void);
+
 #endif /* __APM_GRAPH_ */
diff --git a/sound/soc/qcom/qdsp6/q6prm.c b/sound/soc/qcom/qdsp6/q6prm.c
index 8aa1a21..3aa63aa 100644
--- a/sound/soc/qcom/qdsp6/q6prm.c
+++ b/sound/soc/qcom/qdsp6/q6prm.c
@@ -12,6 +12,7 @@
 #include <linux/soc/qcom/apr.h>
 #include <dt-bindings/soc/qcom,gpr.h>
 #include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
+#include "q6apm.h"
 #include "q6prm.h"
 #include "audioreach.h"
 
@@ -226,6 +227,9 @@ static int prm_probe(gpr_device_t *gdev)
 	init_waitqueue_head(&cc->wait);
 	dev_set_drvdata(dev, cc);
 
+	if (!q6apm_is_adsp_ready())
+		return -EPROBE_DEFER;
+
 	return devm_of_platform_populate(dev);
 }
 
-- 
2.7.4

Re: [PATCH] ASoC: qdsp6: audioreach: Add ADSP ready check

[Mark Brown]

On Thu, 12 Jan 2023 13:00:17 +0530, Srinivasa Rao Mandadapu wrote:
> Check for SPF readiness in prm driver probe to avoid race conditions
> during ADSP pil loading.
> This patch is to avoid, sending requests to ADSP before it's
> power domains are up and ready.
> 
> 

Applied to

   broonie/sound.git for-next

Thanks!

[1/1] ASoC: qdsp6: audioreach: Add ADSP ready check
      commit: 47bc8cf60e926d1fb0c5d990bf6f5e01e9b3352e

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