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bus: mhi: core: Add support for registering MHI controllers

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This commit adds support for registering MHI controller drivers with
the MHI stack. MHI controller drivers manages the interaction with the
MHI client devices such as the external modems and WiFi chipsets. They
are also the MHI bus master in charge of managing the physical link
between the host and client device.

This is based on the patch submitted by Sujeev Dias:
https://lkml.org/lkml/2018/7/9/987

Signed-off-by: Sujeev Dias <sdias@codeaurora.org>
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
[jhugo: added static config for controllers and fixed several bugs]
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
[mani: removed DT dependency, splitted and cleaned up for upstream]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200220095854.4804-3-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Manivannan Sadhasivam
2020-02-20 15:28:40 +05:30
committed by Greg Kroah-Hartman
parent 9435dc3b5e
commit 0cbf260820
9 changed files with 988 additions and 0 deletions
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12
include/linux/mod_devicetable.h
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@@ -821,4 +821,16 @@ struct wmi_device_id {
const void *context;
};
#define MHI_NAME_SIZE 32
/**
* struct mhi_device_id - MHI device identification
* @chan: MHI channel name
* @driver_data: driver data;
*/
struct mhi_device_id {
const char chan[MHI_NAME_SIZE];
kernel_ulong_t driver_data;
};
#endif /* LINUX_MOD_DEVICETABLE_H */