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From dee63031aaa4377dea64113b0f6789ea053087fd Mon Sep 17 00:00:00 2001
From: mokopatches <mokopatches@openmoko.org>
Date: Fri, 4 Apr 2008 11:29:38 +0100
Subject: [PATCH] asoc-neo1973_wm8753-power.patch

---
 sound/soc/s3c24xx/neo1973_wm8753.c |   32 ++++++++++++++++++++++++++++++++
 1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/sound/soc/s3c24xx/neo1973_wm8753.c b/sound/soc/s3c24xx/neo1973_wm8753.c
index 679b99d..0289d1d 100644
--- a/sound/soc/s3c24xx/neo1973_wm8753.c
+++ b/sound/soc/s3c24xx/neo1973_wm8753.c
@@ -617,6 +617,35 @@ static int lm4857_i2c_attach(struct i2c_adapter *adap)
 	return i2c_probe(adap, &addr_data, lm4857_amp_probe);
 }
 
+static u8 lm4857_state;
+
+static int lm4857_suspend(struct i2c_client *dev, pm_message_t state)
+{
+	dev_dbg(&dev->dev, "lm4857_suspend\n");
+	lm4857_state = lm4857_regs[LM4857_CTRL] & 0xf;
+	if (lm4857_state) {
+		lm4857_regs[LM4857_CTRL] &= 0xf0;
+		lm4857_write_regs();
+	}
+	return 0;
+}
+
+static int lm4857_resume(struct i2c_client *dev)
+{
+	if (lm4857_state) {
+		lm4857_regs[LM4857_CTRL] |= (lm4857_state & 0x0f);
+		lm4857_write_regs();
+	}
+	return 0;
+}
+
+static void lm4857_shutdown(struct i2c_client *dev)
+{
+	dev_dbg(&dev->dev, "lm4857_shutdown\n");
+	lm4857_regs[LM4857_CTRL] &= 0xf0;
+	lm4857_write_regs();
+}
+
 /* corgi i2c codec control layer */
 static struct i2c_driver lm4857_i2c_driver = {
 	.driver = {
@@ -624,6 +653,9 @@ static struct i2c_driver lm4857_i2c_driver = {
 		.owner = THIS_MODULE,
 	},
 	.id =             I2C_DRIVERID_LM4857,
+	.suspend =        lm4857_suspend,
+	.resume	=         lm4857_resume,
+	.shutdown =       lm4857_shutdown,
 	.attach_adapter = lm4857_i2c_attach,
 	.detach_client =  lm4857_i2c_detach,
 	.command =        NULL,
-- 
1.5.6.5