From d7a8fbd17bfef174e85d81d94507b8015732a58e Mon Sep 17 00:00:00 2001
From: Keyon Jie <yang.jie@linux.intel.com>
Date: Thu, 20 Jan 2022 17:15:32 -0600
Subject: [PATCH] ASoC: SOF: add flag to disable IMR restore to sof_debug
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Git-commit: d7a8fbd17bfef174e85d81d94507b8015732a58e
Patch-mainline: v5.18-rc1
References: jsc#PED-850
Add flag _IGNORE_D3_PERSISTENT to disable IMR restore feature to
the sof_debug module parameter.
The IMR restore feature will be enabled for all Intel cAVS platforms by
default, but setting the flag _IGNORE_D3_PERSISTENT can help to disable
the feature for debug purpose, to rule out any possible regression
introduced by the change of not re-downloading firmware to the DSP at
resuming from suspended state.
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220120231532.196926-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/sof/intel/hda-loader.c | 2 ++
sound/soc/sof/sof-priv.h | 3 +++
2 files changed, 5 insertions(+)
diff --git a/sound/soc/sof/intel/hda-loader.c b/sound/soc/sof/intel/hda-loader.c
index baf2ff146f50..6af3325b7e40 100644
--- a/sound/soc/sof/intel/hda-loader.c
+++ b/sound/soc/sof/intel/hda-loader.c
@@ -21,6 +21,7 @@
#include <sound/sof.h>
#include "ext_manifest.h"
#include "../ops.h"
+#include "../sof-priv.h"
#include "hda.h"
#define HDA_CL_STREAM_FORMAT 0x40
@@ -396,6 +397,7 @@ int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev)
int ret, ret1, i;
if ((sdev->fw_ready.flags & SOF_IPC_INFO_D3_PERSISTENT) &&
+ !(sof_debug_check_flag(SOF_DBG_IGNORE_D3_PERSISTENT)) &&
!sdev->first_boot) {
dev_dbg(sdev->dev, "IMR restore supported, booting from IMR directly\n");
return hda_dsp_boot_imr(sdev);
diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h
index 087935192ce8..29bb56b7267a 100644
--- a/sound/soc/sof/sof-priv.h
+++ b/sound/soc/sof/sof-priv.h
@@ -34,6 +34,9 @@
* on primary core
*/
#define SOF_DBG_PRINT_ALL_DUMPS BIT(6) /* Print all ipc and dsp dumps */
+#define SOF_DBG_IGNORE_D3_PERSISTENT BIT(7) /* ignore the DSP D3 persistent capability
+ * and always download firmware upon D3 exit
+ */
/* Flag definitions used for controlling the DSP dump behavior */
#define SOF_DBG_DUMP_REGS BIT(0)
--
2.35.3