ASoC: pcm512x: Add ACPI support

HID is assumed to be made of TI PCI ID (0x104C) + part number, so all
four 104C5121, 104C5122, 104C5141 104C5142 are valid.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/pcm512x-i2c.c

@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/i2c.h>
+#include <linux/acpi.h>
 
 #include "pcm512x.h"
 
@@ -52,6 +53,7 @@ static const struct i2c_device_id pcm512x_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id);
 
+#if defined(CONFIG_OF)
 static const struct of_device_id pcm512x_of_match[] = {
 	{ .compatible = "ti,pcm5121", },
 	{ .compatible = "ti,pcm5122", },
@@ -60,6 +62,18 @@ static const struct of_device_id pcm512x_of_match[] = {
 	{ }
 };
 MODULE_DEVICE_TABLE(of, pcm512x_of_match);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id pcm512x_acpi_match[] = {
+	{ "104C5121", 0 },
+	{ "104C5122", 0 },
+	{ "104C5141", 0 },
+	{ "104C5142", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, pcm512x_acpi_match);
+#endif
 
 static struct i2c_driver pcm512x_i2c_driver = {
 	.probe 		= pcm512x_i2c_probe,
@@ -67,7 +81,8 @@ static struct i2c_driver pcm512x_i2c_driver = {
 	.id_table	= pcm512x_i2c_id,
 	.driver		= {
 		.name	= "pcm512x",
-		.of_match_table = pcm512x_of_match,
+		.of_match_table = of_match_ptr(pcm512x_of_match),
+		.acpi_match_table = ACPI_PTR(pcm512x_acpi_match),
 		.pm     = &pcm512x_pm_ops,
 	},
 };