Signed-off-by: Mark Brown <broo...@opensource.wolfsonmicro.com>
---
drivers/base/regmap/regmap-spi.c | 41 ++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/drivers/base/regmap/regmap-spi.c b/drivers/base/regmap/regmap-spi.c
index ffa46a9..bb19592 100644
--- a/drivers/base/regmap/regmap-spi.c
+++ b/drivers/base/regmap/regmap-spi.c
@@ -15,6 +15,21 @@
#include <linux/init.h>
#include <linux/module.h>
+#include "internal.h"
+
+struct regmap_async_spi {
+ struct regmap_async core;
+ struct spi_message m;
+ struct spi_transfer t[2];
+};
+
+static void regmap_spi_complete(void *data)
+{
+ struct regmap_async_spi *async = data;
+
+ regmap_async_complete_cb(&async->core, async->m.status);
+}
+
static int regmap_spi_write(void *context, const void *data, size_t count)
{
struct device *dev = context;
@@ -40,6 +55,30 @@ static int regmap_spi_gather_write(void *context,
return spi_sync(spi, &m);
}
+static int regmap_spi_async_write(void *context,
+ const void *reg, size_t reg_len,
+ const void *val, size_t val_len,
+ struct regmap_async *a)
+{
+ struct regmap_async_spi *async = (void *)a;
+ struct device *dev = context;
+ struct spi_device *spi = to_spi_device(dev);
+
+ async->t[0].tx_buf = reg;
+ async->t[0].len = reg_len;
+ async->t[1].tx_buf = val;
+ async->t[1].len = val_len;
+
+ spi_message_init(&async->m);
+ spi_message_add_tail(&async->t[0], &async->m);
+ spi_message_add_tail(&async->t[1], &async->m);
+
+ async->m.complete = regmap_spi_complete;
+ async->m.context = async;
+
+ return spi_async(spi, &async->m);
+}
+
static int regmap_spi_read(void *context,
const void *reg, size_t reg_size,
void *val, size_t val_size)
@@ -53,8 +92,10 @@ static int regmap_spi_read(void *context,
static struct regmap_bus regmap_spi = {
.write = regmap_spi_write,
.gather_write = regmap_spi_gather_write,
+ .async_write = regmap_spi_async_write,
.read = regmap_spi_read,
.read_flag_mask = 0x80,
+ .async_size = sizeof(struct regmap_async_spi),
};
/**
--
1.7.10.4
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