From 184de70057ae33df858639ed3f03e32d2cace1af Mon Sep 17 00:00:00 2001
From: Misael Lopez Cruz <misael.lopez@ti.com>
Date: Thu, 15 Jul 2010 12:08:07 -0500
Subject: ASoC: SDP4430: Configure TPS61305 to provide VDDHF

Latest versions of SDP4430 ES2.0 have a TPS61305 boost converter to
provide VDDHF supply. TPS61305 needs to be configured via I2C in
order to provide the appropriate power supply.

Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>
Signed-off-by: Margarita Olaya Cabrera <magi.olaya@ti.com>
---
 sound/soc/omap/sdp4430.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'sound')

diff --git a/sound/soc/omap/sdp4430.c b/sound/soc/omap/sdp4430.c
index 1373a9164217..fc8d8dc44ab9 100644
--- a/sound/soc/omap/sdp4430.c
+++ b/sound/soc/omap/sdp4430.c
@@ -21,6 +21,7 @@
 
 #include <linux/clk.h>
 #include <linux/platform_device.h>
+#include <linux/i2c.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
@@ -45,6 +46,27 @@
 static int twl6040_power_mode;
 static struct snd_soc_card snd_soc_sdp4430;
 
+static struct i2c_client *tps61305_client;
+static struct i2c_board_info tps61305_hwmon_info = {
+        I2C_BOARD_INFO("tps61305", 0x33),
+};
+
+static int sdp4430_tps61305_configure(void)
+{
+	u8 data[2];
+
+	data[0] = 0x01;
+	data[1] = 0x60;
+	if (i2c_master_send(tps61305_client, data, 2) != 2)
+		printk(KERN_ERR "I2C write to TSP61305 failed\n");
+
+	data[0] = 0x02;
+	if (i2c_master_send(tps61305_client, data, 2) != 2)
+		printk(KERN_ERR "I2C write to TSP61305 failed\n");
+
+	return 0;
+}
+
 static int sdp4430_hw_params(struct snd_pcm_substream *substream,
 	struct snd_pcm_hw_params *params)
 {
@@ -343,6 +365,7 @@ static struct platform_device *sdp4430_snd_device;
 
 static int __init sdp4430_soc_init(void)
 {
+	struct i2c_adapter *adapter;
 	int ret;
 
 	if (!machine_is_omap_4430sdp()) {
@@ -355,6 +378,20 @@ static int __init sdp4430_soc_init(void)
 	snd_soc_register_dais(&null_dai, 1);
 #endif
 
+	adapter = i2c_get_adapter(1);
+	if (!adapter) {
+		printk(KERN_ERR "can't get i2c adapter\n");
+		return -ENODEV;
+	}
+
+	tps61305_client = i2c_new_device(adapter, &tps61305_hwmon_info);
+	if (!tps61305_client) {
+		printk(KERN_ERR "can't add i2c device\n");
+		return -ENODEV;
+	}
+
+	sdp4430_tps61305_configure();
+
 	sdp4430_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!sdp4430_snd_device) {
 		printk(KERN_ERR "Platform device allocation failed\n");
@@ -391,6 +428,7 @@ module_init(sdp4430_soc_init);
 static void __exit sdp4430_soc_exit(void)
 {
 	platform_device_unregister(sdp4430_snd_device);
+	i2c_unregister_device(tps61305_client);
 }
 module_exit(sdp4430_soc_exit);
 
-- 
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