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ASoC: Use spi_write() for SPI writes 

do_spi_write() is just an open coded copy of do_spi_write() so we can
delete it and just call spi_write() directly.  Indeed, as a result of
recent refactoring all the SPI write functions are just very long
wrappers around spi_write() which don't add anything except for some
pointless copies so we can just use spi_write() as the hw_write
operation directly. It should be as type safe to do this as it is to do
the same thing with I2C and it saves us a bunch of code.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown 2011-05-10 23:33:48 +02:00
parent 063b7cc43f
commit 6e28f976ec
1 changed files with 4 additions and 128 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

132
sound/soc/soc-cache.c
View File

@ -20,30 +20,6 @@
#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)
{
@ -108,21 +84,6 @@ static int snd_soc_4_12_write(struct snd_soc_codec *codec, unsigned int reg,
return do_hw_write(codec, reg, value, &data, 2);
}
#if defined(CONFIG_SPI_MASTER)
static int snd_soc_4_12_spi_write(void *control_data, const char *data,
int len)
{
u8 msg[2];
msg[0] = data[0];
msg[1] = data[1];
return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_4_12_spi_write NULL
#endif
static unsigned int snd_soc_7_9_read(struct snd_soc_codec *codec,
unsigned int reg)
{
@ -140,21 +101,6 @@ static int snd_soc_7_9_write(struct snd_soc_codec *codec, unsigned int reg,
return do_hw_write(codec, reg, value, data, 2);
}
#if defined(CONFIG_SPI_MASTER)
static int snd_soc_7_9_spi_write(void *control_data, const char *data,
int len)
{
u8 msg[2];
msg[0] = data[0];
msg[1] = data[1];
return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_7_9_spi_write NULL
#endif
static int snd_soc_8_8_write(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
@ -173,21 +119,6 @@ static unsigned int snd_soc_8_8_read(struct snd_soc_codec *codec,
return do_hw_read(codec, reg);
}
#if defined(CONFIG_SPI_MASTER)
static int snd_soc_8_8_spi_write(void *control_data, const char *data,
int len)
{
u8 msg[2];
msg[0] = data[0];
msg[1] = data[1];
return do_spi_write(control_data, msg, 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)
{
@ -206,22 +137,6 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec,
return do_hw_read(codec, reg);
}
#if defined(CONFIG_SPI_MASTER)
static int snd_soc_8_16_spi_write(void *control_data, const char *data,
int len)
{
u8 msg[3];
msg[0] = data[0];
msg[1] = data[1];
msg[2] = data[2];
return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_8_16_spi_write NULL
#endif
#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
static unsigned int do_i2c_read(struct snd_soc_codec *codec,
void *reg, int reglen,
@ -322,22 +237,6 @@ static int snd_soc_16_8_write(struct snd_soc_codec *codec, unsigned int reg,
return do_hw_write(codec, reg, value, data, 3);
}
#if defined(CONFIG_SPI_MASTER)
static int snd_soc_16_8_spi_write(void *control_data, const char *data,
int len)
{
u8 msg[3];
msg[0] = data[0];
msg[1] = data[1];
msg[2] = data[2];
return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_16_8_spi_write NULL
#endif
#if defined(CONFIG_I2C) || (defined(CONFIG_I2C_MODULE) && defined(MODULE))
static unsigned int snd_soc_16_16_read_i2c(struct snd_soc_codec *codec,
unsigned int r)
@ -374,23 +273,6 @@ static int snd_soc_16_16_write(struct snd_soc_codec *codec, unsigned int reg,
return do_hw_write(codec, reg, value, data, 4);
}
#if defined(CONFIG_SPI_MASTER)
static int snd_soc_16_16_spi_write(void *control_data, const char *data,
int len)
{
u8 msg[4];
msg[0] = data[0];
msg[1] = data[1];
msg[2] = data[2];
msg[3] = data[3];
return do_spi_write(control_data, msg, len);
}
#else
#define snd_soc_16_16_spi_write NULL
#endif
/* Primitive bulk write support for soc-cache. The data pointed to by
* `data' needs to already be in the form the hardware expects
* including any leading register specific data. Any data written
@ -420,7 +302,7 @@ static int snd_soc_hw_bulk_write_raw(struct snd_soc_codec *codec, unsigned int r
#endif
#if defined(CONFIG_SPI_MASTER)
case SND_SOC_SPI:
ret = do_spi_write(codec->control_data, data, len);
ret = spi_write(codec->control_data, data, len);
break;
#endif
default:
@ -439,43 +321,36 @@ static struct {
int addr_bits;
int data_bits;
int (*write)(struct snd_soc_codec *codec, unsigned int, unsigned int);
int (*spi_write)(void *, const char *, int);
unsigned int (*read)(struct snd_soc_codec *, unsigned int);
unsigned int (*i2c_read)(struct snd_soc_codec *, unsigned int);
} io_types[] = {
{
.addr_bits = 4, .data_bits = 12,
.write = snd_soc_4_12_write, .read = snd_soc_4_12_read,
.spi_write = snd_soc_4_12_spi_write,
},
{
.addr_bits = 7, .data_bits = 9,
.write = snd_soc_7_9_write, .read = snd_soc_7_9_read,
.spi_write = snd_soc_7_9_spi_write,
},
{
.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,
.write = snd_soc_16_8_write, .read = snd_soc_16_8_read,
.i2c_read = snd_soc_16_8_read_i2c,
.spi_write = snd_soc_16_8_spi_write,
},
{
.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,
},
};
@ -536,8 +411,9 @@ int snd_soc_codec_set_cache_io(struct snd_soc_codec *codec,
break;
case SND_SOC_SPI:
if (io_types[i].spi_write)
codec->hw_write = io_types[i].spi_write;
#ifdef CONFIG_SPI_MASTER
codec->hw_write = (hw_write_t)spi_write;
#endif
codec->control_data = container_of(codec->dev,
struct spi_device,