On Wed, Nov 15, 2017 at 02:10:38PM +0000, srinivas.kandagatla@linaro.org wrote:
From: Srinivas Kandagatla srinivas.kandagatla@linaro.org
This patch adds support to read/write slimbus value elements. Currently it only supports byte read/write. Adding this support in regmap would give codec drivers more flexibility when there are more than 2 control interfaces like slimbus, i2c.
Without this patch each codec driver has to directly call slimbus value element apis, and this could would get messy once we want to add i2c interface to it.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org
+static int regmap_slimbus_byte_reg_read(void *context, unsigned int reg,
unsigned int *val)+{
- struct slim_device *sdev = context;
- int v;
- if (!sdev)
return 0;
Is there a specific reason we are checking the context here? The other regmap buses don't both and whilst I don't mind checking shouldn't we return an error if we don't have a context rather than pretending to succeed?
- v = slim_readb(sdev, reg);
- if (v < 0)
return v;- *val = v;
- return 0;
+}
+static int regmap_slimbus_byte_reg_write(void *context, unsigned int reg,
unsigned int val)+{
- struct slim_device *sdev = context;
- if (!sdev)
return 0;
ditto.
Thanks, Charles