linux-kernel - [PATCH v2 4/8] ASoC: wm_adsp: Support DSPs that don't require firmware download

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Date:   Mon, 13 Mar 2023 15:49:51 +0000
From:   Richard Fitzgerald <rf@...nsource.cirrus.com>
To:     <broonie@...nel.org>, <pierre-louis.bossart@...ux.intel.com>
CC:     <peter.ujfalusi@...ux.intel.com>,
        <yung-chuan.liao@...ux.intel.com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>,
        Simon Trimmer <simont@...nsource.cirrus.com>,
        Richard Fitzgerald <rf@...nsource.cirrus.com>
Subject: [PATCH v2 4/8] ASoC: wm_adsp: Support DSPs that don't require firmware download

From: Simon Trimmer <simont@...nsource.cirrus.com>

When a DSP can self-boot from ROM it is not necessary to download
firmware - when the DSP has the wmfw_optional flag set not finding a
wmfw firmware file is a successful outcome and not an error condition.

Signed-off-by: Simon Trimmer <simont@...nsource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
 sound/soc/codecs/wm_adsp.c | 3 +++
 sound/soc/codecs/wm_adsp.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 854d9366a745..8176b6173de9 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -850,6 +850,9 @@ static int wm_adsp_request_firmware_files(struct wm_adsp *dsp,
 		return 0;
 	}
 
+	if (dsp->wmfw_optional)
+		return 0;
+
 	adsp_err(dsp, "Failed to request firmware <%s>%s-%s-%s<-%s<%s>>.wmfw\n",
 		 cirrus_dir, dsp->part, dsp->fwf_name, wm_adsp_fw[dsp->fw].file,
 		 system_name, asoc_component_prefix);
diff --git a/sound/soc/codecs/wm_adsp.h b/sound/soc/codecs/wm_adsp.h
index dc2f7a096e26..173dcae2c260 100644
--- a/sound/soc/codecs/wm_adsp.h
+++ b/sound/soc/codecs/wm_adsp.h
@@ -34,6 +34,7 @@ struct wm_adsp {
 	unsigned int sys_config_size;
 
 	int fw;
+	bool wmfw_optional;
 
 	struct work_struct boot_work;
 	int (*pre_run)(struct wm_adsp *dsp);
-- 
2.30.2