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authorDimitris Papastamos <dp@opensource.wolfsonmicro.com>2011-03-22 10:37:00 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-03-26 17:44:56 +0000
commit30539a18d366cff6b21f66a81e4d9dccc4a90c89 (patch)
treeb09d68bd592f85ac05d617d5ce40ec623c36c9c0 /sound/soc/soc-cache.c
parentb8cbc195202d05efcda6af81c669577e3cb793e5 (diff)
downloadlinux-30539a18d366cff6b21f66a81e4d9dccc4a90c89.tar.bz2
ASoC: soc-cache: Factor-out the SPI write code
The handling of all snd_soc_x_y_spi_write() functions is similar. Create a separate function and update all callers to use it. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-cache.c')
-rw-r--r--sound/soc/soc-cache.c126
1 files changed, 30 insertions, 96 deletions
diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index abb0243f3adf..d7bffdd033b0 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -20,6 +20,30 @@
#include <trace/events/asoc.h>
+#if defined(CONFIG_SPI_MASTER)
+static int do_spi_write(void *control_data, const void *msg,
+ int len)
+{
+ struct spi_device *spi = control_data;
+ struct spi_transfer t;
+ struct spi_message m;
+
+ if (len <= 0)
+ return 0;
+
+ spi_message_init(&m);
+ memset(&t, 0, sizeof t);
+
+ t.tx_buf = msg;
+ t.len = len;
+
+ spi_message_add_tail(&t, &m);
+ spi_sync(spi, &m);
+
+ return len;
+}
+#endif
+
static int do_hw_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value, const void *data, int len)
{
@@ -89,27 +113,12 @@ static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg,
static int snd_soc_4_12_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[1];
msg[1] = data[0];
- 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;
+ return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_4_12_spi_write NULL
@@ -136,27 +145,12 @@ static int snd_soc_7_9_write(struct snd_soc_codec *codec, unsigned int reg,
static int snd_soc_7_9_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;
+ return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_7_9_spi_write NULL
@@ -184,27 +178,12 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec,
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;
+ return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_8_8_spi_write NULL
@@ -232,28 +211,13 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec,
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;
+ return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_8_16_spi_write NULL
@@ -365,28 +329,13 @@ static int snd_soc_16_8_write(struct snd_soc_codec *codec, unsigned int reg,
static int snd_soc_16_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[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;
+ return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_16_8_spi_write NULL
@@ -432,29 +381,14 @@ static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg,
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;
+ return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_16_16_spi_write NULL