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Subject[PATCH v2] regmap: slimbus: add support to multi read/write
Date
SLIMbus supports upto 16 bytes in value management messages,
so add support to read/writes upto 16 bytes.

This also removes redundant single register reg_read/reg_write.

Also useful for paged register access on SLIMbus interfaced codecs.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/base/regmap/regmap-slimbus.c | 23 +++++++----------------
1 file changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/base/regmap/regmap-slimbus.c b/drivers/base/regmap/regmap-slimbus.c
index 91d501eda8a9..0968059f1ef5 100644
--- a/drivers/base/regmap/regmap-slimbus.c
+++ b/drivers/base/regmap/regmap-slimbus.c
@@ -7,33 +7,24 @@

#include "internal.h"

-static int regmap_slimbus_byte_reg_read(void *context, unsigned int reg,
- unsigned int *val)
+static int regmap_slimbus_write(void *context, const void *data, size_t count)
{
struct slim_device *sdev = context;
- int v;

- v = slim_readb(sdev, reg);
-
- if (v < 0)
- return v;
-
- *val = v;
-
- return 0;
+ return slim_write(sdev, *(u16 *)data, count - 2, (u8 *)data + 2);
}

-static int regmap_slimbus_byte_reg_write(void *context, unsigned int reg,
- unsigned int val)
+static int regmap_slimbus_read(void *context, const void *reg, size_t reg_size,
+ void *val, size_t val_size)
{
struct slim_device *sdev = context;

- return slim_writeb(sdev, reg, val);
+ return slim_read(sdev, *(u16 *)reg, val_size, val);
}

static struct regmap_bus regmap_slimbus_bus = {
- .reg_write = regmap_slimbus_byte_reg_write,
- .reg_read = regmap_slimbus_byte_reg_read,
+ .write = regmap_slimbus_write,
+ .read = regmap_slimbus_read,
.reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
.val_format_endian_default = REGMAP_ENDIAN_LITTLE,
};
--
2.16.2
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