[PATCH 07/14] ASoC: SOF: acpi: add dynamic selection of DSP driver

[Pierre-Louis Bossart]

Follow PCI example and stop the probe when another driver is desired
for the same ACPI HID.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Rander Wang <rander.wang at linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
---
 sound/soc/sof/intel/Kconfig  |  1 +
 sound/soc/sof/sof-acpi-dev.c | 14 +++++++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/intel/Kconfig b/sound/soc/sof/intel/Kconfig
index b233302f05e4..b593b29789d5 100644
--- a/sound/soc/sof/intel/Kconfig
+++ b/sound/soc/sof/intel/Kconfig
@@ -78,6 +78,7 @@ config SND_SOC_SOF_BAYTRAIL_SUPPORT
 config SND_SOC_SOF_BAYTRAIL
 	tristate
 	select SND_SOC_SOF_INTEL_ATOM_HIFI_EP
+	select SND_INTEL_DSP_CONFIG
 	help
 	  This option is not user-selectable but automagically handled by
 	  'select' statements at a higher level.
diff --git a/sound/soc/sof/sof-acpi-dev.c b/sound/soc/sof/sof-acpi-dev.c
index a78b76ef37b2..2a369c2c6551 100644
--- a/sound/soc/sof/sof-acpi-dev.c
+++ b/sound/soc/sof/sof-acpi-dev.c
@@ -12,6 +12,7 @@
 #include <linux/firmware.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
+#include <sound/intel-dsp-config.h>
 #include <sound/soc-acpi.h>
 #include <sound/soc-acpi-intel-match.h>
 #include <sound/sof.h>
@@ -120,12 +121,23 @@ static void sof_acpi_probe_complete(struct device *dev)
 static int sof_acpi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	const struct acpi_device_id *id;
 	const struct sof_dev_desc *desc;
 	struct snd_sof_pdata *sof_pdata;
 	const struct snd_sof_dsp_ops *ops;
 	int ret;
 
-	dev_dbg(&pdev->dev, "ACPI DSP detected");
+	id = acpi_match_device(dev->driver->acpi_match_table, dev);
+	if (!id)
+		return -ENODEV;
+
+	ret = snd_intel_acpi_dsp_driver_probe(dev, id->id);
+	if (ret != SND_INTEL_DSP_DRIVER_ANY && ret != SND_INTEL_DSP_DRIVER_SOF) {
+		dev_dbg(dev, "SOF ACPI driver not selected, aborting probe\n");
+		return -ENODEV;
+	}
+
+	dev_dbg(dev, "ACPI DSP detected");
 
 	sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
 	if (!sof_pdata)
-- 
2.25.1