SLIMbus supports upto 16 bytes in value management messages,
so add support to raw read/writes upto 16 bytes.
Also useful for paged register access on SLIMbus interfaced codecs.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
drivers/base/regmap/regmap-slimbus.c | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/drivers/base/regmap/regmap-slimbus.c b/drivers/base/regmap/regmap-slimbus.c
index 91d501eda8a9..fc07518666b2 100644
--- a/drivers/base/regmap/regmap-slimbus.c
+++ b/drivers/base/regmap/regmap-slimbus.c
@@ -31,11 +31,30 @@ static int regmap_slimbus_byte_reg_write(void *context, unsigned int reg,
return slim_writeb(sdev, reg, val);
}
+static int regmap_slimbus_write(void *context, const void *data, size_t count)
+{
+ struct slim_device *sdev = context;
+
+ return slim_write(sdev, *(u16 *)data, count - 2, (u8 *)data + 2);
+}
+
+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_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,
- .reg_format_endian_default = REGMAP_ENDIAN_LITTLE,
- .val_format_endian_default = REGMAP_ENDIAN_LITTLE,
+ .max_raw_write = 16,
+ .max_raw_read = 16,
+ .write = regmap_slimbus_write,
+ .read = regmap_slimbus_read,
+ .reg_format_endian_default = REGMAP_ENDIAN_NATIVE,
+ .val_format_endian_default = REGMAP_ENDIAN_NATIVE,
};
static const struct regmap_bus *regmap_get_slimbus(struct slim_device *slim,
--
2.16.2
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