ASoC: SOF: OF: Avoid reverse module dependency

Similar with commit 8a49cd11 ("ASoC: SOF: ACPI: avoid reverse
module dependency") we will be having hardware specific drivers that
link against a common "helper" framework.

sof-of-dev.c becomes a library with the interface defined in the newly
created file sof-of-dev.h.

This is the final step started with Kconfig simplification in
commit 7548a391 ("ASoC: SOF: i.MX: simplify Kconfig")
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20211215085703.137414-1-daniel.baluta@oss.nxp.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/imx/imx-ops.h

-/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
-
-#ifndef __IMX_OPS_H__
-#define __IMX_OPS_H__
-
-extern struct snd_sof_dsp_ops sof_imx8_ops;
-extern struct snd_sof_dsp_ops sof_imx8x_ops;
-extern struct snd_sof_dsp_ops sof_imx8m_ops;
-
-#endif

sound/soc/sof/imx/imx8.c

@@ -21,8 +21,8 @@
 #include <linux/firmware/imx/svc/misc.h>
 #include <dt-bindings/firmware/imx/rsrc.h>
 #include "../ops.h"
+#include "../sof-of-dev.h"
 #include "imx-common.h"
-#include "imx-ops.h"
 
 /* DSP memories */
 #define IRAM_OFFSET		0x10000
@@ -487,7 +487,7 @@ static int imx8_dsp_set_power_state(struct snd_sof_dev *sdev,
 }
 
 /* i.MX8 ops */
-struct snd_sof_dsp_ops sof_imx8_ops = {
+static const struct snd_sof_dsp_ops sof_imx8_ops = {
 	/* probe and remove */
 	.probe		= imx8_probe,
 	.remove		= imx8_remove,
@@ -548,10 +548,9 @@ struct snd_sof_dsp_ops sof_imx8_ops = {
 
 	.set_power_state	= imx8_dsp_set_power_state,
 };
-EXPORT_SYMBOL(sof_imx8_ops);
 
 /* i.MX8X ops */
-struct snd_sof_dsp_ops sof_imx8x_ops = {
+static const struct snd_sof_dsp_ops sof_imx8x_ops = {
 	/* probe and remove */
 	.probe		= imx8_probe,
 	.remove		= imx8_remove,
@@ -612,7 +611,41 @@ struct snd_sof_dsp_ops sof_imx8x_ops = {
 			SNDRV_PCM_INFO_PAUSE |
 			SNDRV_PCM_INFO_NO_PERIOD_WAKEUP
 };
-EXPORT_SYMBOL(sof_imx8x_ops);
+
+static struct sof_dev_desc sof_of_imx8qxp_desc = {
+	.default_fw_path = "imx/sof",
+	.default_tplg_path = "imx/sof-tplg",
+	.default_fw_filename = "sof-imx8x.ri",
+	.nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
+	.ops = &sof_imx8x_ops,
+};
+
+static struct sof_dev_desc sof_of_imx8qm_desc = {
+	.default_fw_path = "imx/sof",
+	.default_tplg_path = "imx/sof-tplg",
+	.default_fw_filename = "sof-imx8.ri",
+	.nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
+	.ops = &sof_imx8_ops,
+};
+
+static const struct of_device_id sof_of_imx8_ids[] = {
+	{ .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc},
+	{ .compatible = "fsl,imx8qm-dsp", .data = &sof_of_imx8qm_desc},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sof_of_imx8_ids);
+
+/* DT driver definition */
+static struct platform_driver snd_sof_of_imx8_driver = {
+	.probe = sof_of_probe,
+	.remove = sof_of_remove,
+	.driver = {
+		.name = "sof-audio-of-imx8",
+		.pm = &sof_of_pm,
+		.of_match_table = sof_of_imx8_ids,
+	},
+};
+module_platform_driver(snd_sof_of_imx8_driver);
 
 MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA);
 MODULE_LICENSE("Dual BSD/GPL");

sound/soc/sof/imx/imx8m.c

@@ -20,8 +20,8 @@
 #include <linux/firmware/imx/dsp.h>
 
 #include "../ops.h"
+#include "../sof-of-dev.h"
 #include "imx-common.h"
-#include "imx-ops.h"
 
 #define MBOX_OFFSET	0x800000
 #define MBOX_SIZE	0x1000
@@ -411,7 +411,7 @@ static int imx8m_dsp_suspend(struct snd_sof_dev *sdev, unsigned int target_state
 }
 
 /* i.MX8 ops */
-struct snd_sof_dsp_ops sof_imx8m_ops = {
+static const struct snd_sof_dsp_ops sof_imx8m_ops = {
 	/* probe and remove */
 	.probe		= imx8m_probe,
 	.remove		= imx8m_remove,
@@ -470,7 +470,32 @@ struct snd_sof_dsp_ops sof_imx8m_ops = {
 		SNDRV_PCM_INFO_PAUSE |
 		SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
 };
-EXPORT_SYMBOL(sof_imx8m_ops);
+
+static struct sof_dev_desc sof_of_imx8mp_desc = {
+	.default_fw_path = "imx/sof",
+	.default_tplg_path = "imx/sof-tplg",
+	.default_fw_filename = "sof-imx8m.ri",
+	.nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
+	.ops = &sof_imx8m_ops,
+};
+
+static const struct of_device_id sof_of_imx8m_ids[] = {
+	{ .compatible = "fsl,imx8mp-dsp", .data = &sof_of_imx8mp_desc},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sof_of_imx8m_ids);
+
+/* DT driver definition */
+static struct platform_driver snd_sof_of_imx8m_driver = {
+	.probe = sof_of_probe,
+	.remove = sof_of_remove,
+	.driver = {
+		.name = "sof-audio-of-imx8m",
+		.pm = &sof_of_pm,
+		.of_match_table = sof_of_imx8m_ids,
+	},
+};
+module_platform_driver(snd_sof_of_imx8m_driver);
 
 MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA);
 MODULE_LICENSE("Dual BSD/GPL");

sound/soc/sof/mediatek/mediatek-ops.h

-/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
-
-#ifndef __MEDIATEK_OPS_H__
-#define __MEDIATEK_OPS_H__
-
-extern const struct snd_sof_dsp_ops sof_mt8195_ops;
-
-#endif

sound/soc/sof/mediatek/mt8195/mt8195.c

@@ -21,9 +21,9 @@
 #include <sound/sof.h>
 #include <sound/sof/xtensa.h>
 #include "../../ops.h"
+#include "../../sof-of-dev.h"
 #include "../../sof-audio.h"
 #include "../adsp_helper.h"
-#include "../mediatek-ops.h"
 #include "mt8195.h"
 #include "mt8195-clk.h"
 
@@ -388,7 +388,7 @@ static struct snd_soc_dai_driver mt8195_dai[] = {
 };
 
 /* mt8195 ops */
-const struct snd_sof_dsp_ops sof_mt8195_ops = {
+static const struct snd_sof_dsp_ops sof_mt8195_ops = {
 	/* probe and remove */
 	.probe		= mt8195_dsp_probe,
 	.remove		= mt8195_dsp_remove,
@@ -432,7 +432,32 @@ const struct snd_sof_dsp_ops sof_mt8195_ops = {
 			SNDRV_PCM_INFO_PAUSE |
 			SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
 };
-EXPORT_SYMBOL(sof_mt8195_ops);
+
+static const struct sof_dev_desc sof_of_mt8195_desc = {
+	.default_fw_path = "mediatek/sof",
+	.default_tplg_path = "mediatek/sof-tplg",
+	.default_fw_filename = "sof-mt8195.ri",
+	.nocodec_tplg_filename = "sof-mt8195-nocodec.tplg",
+	.ops = &sof_mt8195_ops,
+};
+
+static const struct of_device_id sof_of_mt8195_ids[] = {
+	{ .compatible = "mediatek,mt8195-dsp", .data = &sof_of_mt8195_desc},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sof_of_mt8195_ids);
+
+/* DT driver definition */
+static struct platform_driver snd_sof_of_mt8195_driver = {
+	.probe = sof_of_probe,
+	.remove = sof_of_remove,
+	.driver = {
+	.name = "sof-audio-of-mt8195",
+		.pm = &sof_of_pm,
+		.of_match_table = sof_of_mt8195_ids,
+	},
+};
+module_platform_driver(snd_sof_of_mt8195_driver);
 
 MODULE_IMPORT_NS(SND_SOC_SOF_XTENSA);
 MODULE_LICENSE("Dual BSD/GPL");

sound/soc/sof/sof-of-dev.c

@@ -11,9 +11,8 @@
 #include <linux/pm_runtime.h>
 #include <sound/sof.h>
 
+#include "sof-of-dev.h"
 #include "ops.h"
-#include "imx/imx-ops.h"
-#include "mediatek/mediatek-ops.h"
 
 static char *fw_path;
 module_param(fw_path, charp, 0444);
@@ -23,51 +22,14 @@ static char *tplg_path;
 module_param(tplg_path, charp, 0444);
 MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
 
-/* platform specific devices */
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
-static struct sof_dev_desc sof_of_imx8qxp_desc = {
-	.default_fw_path = "imx/sof",
-	.default_tplg_path = "imx/sof-tplg",
-	.default_fw_filename = "sof-imx8x.ri",
-	.nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
-	.ops = &sof_imx8x_ops,
-};
-
-static struct sof_dev_desc sof_of_imx8qm_desc = {
-	.default_fw_path = "imx/sof",
-	.default_tplg_path = "imx/sof-tplg",
-	.default_fw_filename = "sof-imx8.ri",
-	.nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
-	.ops = &sof_imx8_ops,
-};
-#endif
-
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8M)
-static struct sof_dev_desc sof_of_imx8mp_desc = {
-	.default_fw_path = "imx/sof",
-	.default_tplg_path = "imx/sof-tplg",
-	.default_fw_filename = "sof-imx8m.ri",
-	.nocodec_tplg_filename = "sof-imx8-nocodec.tplg",
-	.ops = &sof_imx8m_ops,
-};
-#endif
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_MT8195)
-static const struct sof_dev_desc sof_of_mt8195_desc = {
-	.default_fw_path = "mediatek/sof",
-	.default_tplg_path = "mediatek/sof-tplg",
-	.default_fw_filename = "sof-mt8195.ri",
-	.nocodec_tplg_filename = "sof-mt8195-nocodec.tplg",
-	.ops = &sof_mt8195_ops,
-};
-#endif
-
-static const struct dev_pm_ops sof_of_pm = {
+const struct dev_pm_ops sof_of_pm = {
 	.prepare = snd_sof_prepare,
 	.complete = snd_sof_complete,
 	SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
 	SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
 			   NULL)
 };
+EXPORT_SYMBOL(sof_of_pm);
 
 static void sof_of_probe_complete(struct device *dev)
 {
@@ -79,7 +41,7 @@ static void sof_of_probe_complete(struct device *dev)
 	pm_runtime_enable(dev);
 }
 
-static int sof_of_probe(struct platform_device *pdev)
+int sof_of_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	const struct sof_dev_desc *desc;
@@ -120,8 +82,9 @@ static int sof_of_probe(struct platform_device *pdev)
 	/* call sof helper for DSP hardware probe */
 	return snd_sof_device_probe(dev, sof_pdata);
 }
+EXPORT_SYMBOL(sof_of_probe);
 
-static int sof_of_remove(struct platform_device *pdev)
+int sof_of_remove(struct platform_device *pdev)
 {
 	pm_runtime_disable(&pdev->dev);
 
@@ -130,32 +93,6 @@ static int sof_of_remove(struct platform_device *pdev)
 
 	return 0;
 }
-
-static const struct of_device_id sof_of_ids[] = {
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8)
-	{ .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc},
-	{ .compatible = "fsl,imx8qm-dsp", .data = &sof_of_imx8qm_desc},
-#endif
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8M)
-	{ .compatible = "fsl,imx8mp-dsp", .data = &sof_of_imx8mp_desc},
-#endif
-#if IS_ENABLED(CONFIG_SND_SOC_SOF_MT8195)
-	{ .compatible = "mediatek,mt8195-dsp", .data = &sof_of_mt8195_desc},
-#endif
-	{ }
-};
-MODULE_DEVICE_TABLE(of, sof_of_ids);
-
-/* DT driver definition */
-static struct platform_driver snd_sof_of_driver = {
-	.probe = sof_of_probe,
-	.remove = sof_of_remove,
-	.driver = {
-		.name = "sof-audio-of",
-		.pm = &sof_of_pm,
-		.of_match_table = sof_of_ids,
-	},
-};
-module_platform_driver(snd_sof_of_driver);
+EXPORT_SYMBOL(sof_of_remove);
 
 MODULE_LICENSE("Dual BSD/GPL");

sound/soc/sof/sof-of-dev.h

+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
+/*
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * Copyright 2021 NXP
+ */
+
+#ifndef __SOUND_SOC_SOF_OF_H
+#define __SOUND_SOC_SOF_OF_H
+
+extern const struct dev_pm_ops sof_of_pm;
+
+int sof_of_probe(struct platform_device *pdev);
+int sof_of_remove(struct platform_device *pdev);
+
+#endif