Add notification to inform caller that mux objects array has been
created. It allows to user, invoked platform device registration for
"i2c-mux-mlxcpld" driver, to be notified that mux infrastructure is
available, and thus some devices could be connected to this
infrastructure.
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxx>
---
drivers/i2c/muxes/i2c-mux-mlxcpld.c | 4 ++++
include/linux/platform_data/mlxcpld.h | 5 +++++
2 files changed, 9 insertions(+)
diff --git a/drivers/i2c/muxes/i2c-mux-mlxcpld.c b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
index 5e0672f9979b..1a879f6a31ef 100644
--- a/drivers/i2c/muxes/i2c-mux-mlxcpld.c
+++ b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
@@ -159,6 +159,10 @@ static int mlxcpld_mux_probe(struct platform_device *pdev)
goto virt_reg_failed;
}
+ /* Notify caller when all channels' adapters are created. */
+ if (pdata->completion_notify)
+ pdata->completion_notify(pdata->handle, muxc->parent, muxc->adapter);
+
return 0;
virt_reg_failed:
diff --git a/include/linux/platform_data/mlxcpld.h b/include/linux/platform_data/mlxcpld.h
index a7bee798d991..d7610b528856 100644
--- a/include/linux/platform_data/mlxcpld.h
+++ b/include/linux/platform_data/mlxcpld.h
@@ -15,12 +15,17 @@
* @num_adaps - number of adapters
* @sel_reg_addr - mux select register offset in CPLD space
* @reg_size: register size in bytes
+ * @handle: handle to be passed by callback
+ * @completion_notify: callback to notify when all the adapters are created
*/
struct mlxcpld_mux_plat_data {
int *chan_ids;
int num_adaps;
int sel_reg_addr;
u8 reg_size;
+ void *handle;
+ int (*completion_notify)(void *handle, struct i2c_adapter *parent,
+ struct i2c_adapter *adapters[]);
};
#endif /* _LINUX_I2C_MLXCPLD_H */
--
2.11.0
