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authorSrinivas Kandagatla <srinivas.kandagatla@linaro.org>2018-07-06 18:05:27 +0300
committerMark Brown <broonie@kernel.org>2018-07-11 13:58:04 +0300
commite76ad18b56775aa20c0fb8e6203fae2aaee57e5c (patch)
treed5f93adc97437c6a0d73e0c3b40feff074fb889a /drivers/base
parentce397d215ccd07b8ae3f71db689aedb85d56ab40 (diff)
downloadlinux-e76ad18b56775aa20c0fb8e6203fae2aaee57e5c.tar.xz
regmap: slimbus: add support to multi read/write
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> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/regmap/regmap-slimbus.c23
1 files 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,
};