ASoC: Intel: Atom: add dynamic selection of DSP driver

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@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201112223825.39765-9-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/Kconfig

@@ -55,6 +55,7 @@ config SND_SST_ATOM_HIFI2_PLATFORM_ACPI
 	depends on X86 && ACPI && PCI
 	select SND_SST_ATOM_HIFI2_PLATFORM
 	select SND_SOC_ACPI_INTEL_MATCH
+	select SND_INTEL_DSP_CONFIG
 	select IOSF_MBI
 	help
 	  If you have a Intel Baytrail or Cherrytrail platform with an I2S

sound/soc/intel/atom/sst/sst_acpi.c

@@ -21,6 +21,7 @@
 #include <linux/acpi.h>
 #include <asm/platform_sst_audio.h>
 #include <sound/core.h>
+#include <sound/intel-dsp-config.h>
 #include <sound/soc.h>
 #include <sound/compress_driver.h>
 #include <acpi/acbuffer.h>
@@ -246,6 +247,13 @@ static int sst_acpi_probe(struct platform_device *pdev)
 	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_SST) {
+		dev_dbg(dev, "SST ACPI driver not selected, aborting probe\n");
+		return -ENODEV;
+	}
+
 	dev_dbg(dev, "for %s\n", id->id);
 
 	mach = (struct snd_soc_acpi_mach *)id->driver_data;