From 7be95b3ccc9c2f4bb73f10f78f0c0683295a2370 Mon Sep 17 00:00:00 2001
From: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Date: Mon, 4 Oct 2010 11:25:13 +0100
Subject: [PATCH] --- yaml --- r: 216611 b: refs/heads/master c:
 f479fd93d4028afccf155dec736c6d49cde92571 h: refs/heads/master i:   216609:
 134a229a3f37be0cdb488c873bea8e0232fb759d   216607:
 211ece1f63918c3d60da22954af8b2cdb81aea4e v: v3

---
 [refs]                      |  2 +-
 trunk/sound/soc/soc-cache.c | 96 +++++++++++++++++++++++++++++++++++++
 2 files changed, 97 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 4c060d2f4021..bd7a7c4847be 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bb5a027026db86b0c676104b2e3f6cc4768d1ac0
+refs/heads/master: f479fd93d4028afccf155dec736c6d49cde92571
diff --git a/trunk/sound/soc/soc-cache.c b/trunk/sound/soc/soc-cache.c
index 62f1e2b776c4..d214f02cbb65 100644
--- a/trunk/sound/soc/soc-cache.c
+++ b/trunk/sound/soc/soc-cache.c
@@ -211,6 +211,36 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec,
 	return cache[reg];
 }
 
+#if defined(CONFIG_SPI_MASTER)
+static int snd_soc_8_8_spi_write(void *control_data, const char *data,
+				 int len)
+{
+	struct spi_device *spi = control_data;
+	struct spi_transfer t;
+	struct spi_message m;
+	u8 msg[2];
+
+	if (len <= 0)
+		return 0;
+
+	msg[0] = data[0];
+	msg[1] = data[1];
+
+	spi_message_init(&m);
+	memset(&t, 0, (sizeof t));
+
+	t.tx_buf = &msg[0];
+	t.len = len;
+
+	spi_message_add_tail(&t, &m);
+	spi_sync(spi, &m);
+
+	return len;
+}
+#else
+#define snd_soc_8_8_spi_write NULL
+#endif
+
 static int snd_soc_8_16_write(struct snd_soc_codec *codec, unsigned int reg,
 			      unsigned int value)
 {
@@ -254,6 +284,37 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec,
 	}
 }
 
+#if defined(CONFIG_SPI_MASTER)
+static int snd_soc_8_16_spi_write(void *control_data, const char *data,
+				 int len)
+{
+	struct spi_device *spi = control_data;
+	struct spi_transfer t;
+	struct spi_message m;
+	u8 msg[3];
+
+	if (len <= 0)
+		return 0;
+
+	msg[0] = data[0];
+	msg[1] = data[1];
+	msg[2] = data[2];
+
+	spi_message_init(&m);
+	memset(&t, 0, (sizeof t));
+
+	t.tx_buf = &msg[0];
+	t.len = len;
+
+	spi_message_add_tail(&t, &m);
+	spi_sync(spi, &m);
+
+	return len;
+}
+#else
+#define snd_soc_8_16_spi_write NULL
+#endif
+
 #if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
 static unsigned int snd_soc_8_8_read_i2c(struct snd_soc_codec *codec,
 					  unsigned int r)
@@ -518,6 +579,38 @@ static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg,
 		return -EIO;
 }
 
+#if defined(CONFIG_SPI_MASTER)
+static int snd_soc_16_16_spi_write(void *control_data, const char *data,
+				 int len)
+{
+	struct spi_device *spi = control_data;
+	struct spi_transfer t;
+	struct spi_message m;
+	u8 msg[4];
+
+	if (len <= 0)
+		return 0;
+
+	msg[0] = data[0];
+	msg[1] = data[1];
+	msg[2] = data[2];
+	msg[3] = data[3];
+
+	spi_message_init(&m);
+	memset(&t, 0, (sizeof t));
+
+	t.tx_buf = &msg[0];
+	t.len = len;
+
+	spi_message_add_tail(&t, &m);
+	spi_sync(spi, &m);
+
+	return len;
+}
+#else
+#define snd_soc_16_16_spi_write NULL
+#endif
+
 static struct {
 	int addr_bits;
 	int data_bits;
@@ -540,11 +633,13 @@ static struct {
 		.addr_bits = 8, .data_bits = 8,
 		.write = snd_soc_8_8_write, .read = snd_soc_8_8_read,
 		.i2c_read = snd_soc_8_8_read_i2c,
+		.spi_write = snd_soc_8_8_spi_write,
 	},
 	{
 		.addr_bits = 8, .data_bits = 16,
 		.write = snd_soc_8_16_write, .read = snd_soc_8_16_read,
 		.i2c_read = snd_soc_8_16_read_i2c,
+		.spi_write = snd_soc_8_16_spi_write,
 	},
 	{
 		.addr_bits = 16, .data_bits = 8,
@@ -556,6 +651,7 @@ static struct {
 		.addr_bits = 16, .data_bits = 16,
 		.write = snd_soc_16_16_write, .read = snd_soc_16_16_read,
 		.i2c_read = snd_soc_16_16_read_i2c,
+		.spi_write = snd_soc_16_16_spi_write,
 	},
 };