From 02b80773de3732dae11c1cf0c1ce40378901bd0e Mon Sep 17 00:00:00 2001
From: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Date: Fri, 13 Sep 2013 17:57:36 +0100
Subject: [PATCH] ASoC: rt5640: Add ACPI probing support.

Allow the RT5640 to be probed as an ACPI I2C device.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
---
 sound/soc/codecs/rt5640.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index de40bd9f6ac2..0bfb960e90f8 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -21,6 +21,7 @@
 #include <linux/of_gpio.h>
 #include <linux/platform_device.h>
 #include <linux/spi/spi.h>
+#include <linux/acpi.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
@@ -2081,6 +2082,12 @@ static const struct i2c_device_id rt5640_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, rt5640_i2c_id);
 
+static struct acpi_device_id rt5640_acpi_match[] = {
+	{ "INT33CA", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, rt5640_acpi_match);
+
 static int rt5640_parse_dt(struct rt5640_priv *rt5640, struct device_node *np)
 {
 	rt5640->pdata.in1_diff = of_property_read_bool(np,
@@ -2200,6 +2207,7 @@ static struct i2c_driver rt5640_i2c_driver = {
 	.driver = {
 		.name = "rt5640",
 		.owner = THIS_MODULE,
+		.acpi_match_table = ACPI_PTR(rt5640_acpi_match),
 	},
 	.probe = rt5640_i2c_probe,
 	.remove   = rt5640_i2c_remove,