[RFC 1/9] mei: late_bind: add late binding component driver

[Jani Nikula]

On Tue, 29 Apr 2025, Badal Nilawar <badal.nilawar at intel.com> wrote:
> diff --git a/include/drm/intel/xe_late_bind_mei_interface.h b/include/drm/intel/xe_late_bind_mei_interface.h
> new file mode 100644
> index 000000000000..4005c4c6184f
> --- /dev/null
> +++ b/include/drm/intel/xe_late_bind_mei_interface.h
> @@ -0,0 +1,49 @@
> +/* SPDX-License-Identifier: MIT */
> +/*
> + * Copyright (c) 2025 Intel Corporation
> + */
> +
> +#ifndef _XE_LATE_BIND_MEI_INTERFACE_H_
> +#define _XE_LATE_BIND_MEI_INTERFACE_H_
> +
> +#include <linux/types.h>
> +
> +struct device;
> +struct module;
> +
> +/**
> + * struct xe_late_bind_component_ops - ops for Late Binding services.
> + * @owner: Module providing the ops
> + * @push_config: Sends a config to FW.
> + */
> +struct xe_late_bind_component_ops {

Please don't name the file after xe, please don't name the structs after
xe. The whole directory include/drm/intel/ is supposed to be agnostic to
i915 or xe, even if the current naming has i915 for historical
reasons.

Aim for generic interfaces and solutions and naming instead of doing
something specific for xe, even if the first user is xe.

BR,
Jani.


> +	struct module *owner;
> +
> +	/**
> +	 * @push_config: Sends a config to FW.
> +	 * @dev: device struct corresponding to the mei device
> +	 * @type: payload type
> +	 * @flags: payload flags
> +	 * @payload: payload buffer
> +	 * @payload_size: payload buffer size
> +	 *
> +	 * Return: 0 success, negative errno value on transport failure,
> +	 *         positive status returned by FW
> +	 */
> +	int (*push_config)(struct device *dev, u32 type, u32 flags,
> +			   const void *payload, size_t payload_size);
> +};
> +
> +/**
> + * struct xe_late_bind_component - Late Binding services component
> + * @mei_dev: device that provide Late Binding service.
> + * @ops: Ops implemented by Late Binding driver, used by Xe driver.
> + *
> + * Communication between Xe and MEI drivers for Late Binding services
> + */
> +struct xe_late_bind_component {
> +	struct device *mei_dev;
> +	const struct xe_late_bind_component_ops *ops;
> +};
> +
> +#endif /* _XE_LATE_BIND_MEI_INTERFACE_H_ */

-- 
Jani Nikula, Intel