Revert "accel/qaic: Add mhi_qaic_cntl"

This reverts commit 566fc961.

This exposes a userspace API that is still under debate.  Revert the
change before the uAPI gets exposed to avoid making a mistake.  QAIC is
otherwise still functional.
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1681307864-3782-1-git-send-email-quic_jhugo@quicinc.com

drivers/accel/qaic/Makefile

@@ -7,7 +7,6 @@ obj-$(CONFIG_DRM_ACCEL_QAIC)	:= qaic.o
 
 qaic-y := \
 	mhi_controller.o \
-	mhi_qaic_ctrl.o \
 	qaic_control.o \
 	qaic_data.o \
 	qaic_drv.o

drivers/accel/qaic/mhi_qaic_ctrl.h

-/* SPDX-License-Identifier: GPL-2.0-only
- *
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
- */
-
-#ifndef __MHI_QAIC_CTRL_H__
-#define __MHI_QAIC_CTRL_H__
-
-int mhi_qaic_ctrl_init(void);
-void mhi_qaic_ctrl_deinit(void);
-
-#endif /* __MHI_QAIC_CTRL_H__ */

drivers/accel/qaic/qaic_drv.c

@@ -25,7 +25,6 @@
 #include <uapi/drm/qaic_accel.h>
 
 #include "mhi_controller.h"
-#include "mhi_qaic_ctrl.h"
 #include "qaic.h"
 
 MODULE_IMPORT_NS(DMA_BUF);
@@ -601,16 +600,8 @@ static int __init qaic_init(void)
 		goto free_mhi;
 	}
 
-	ret = mhi_qaic_ctrl_init();
-	if (ret) {
-		pr_debug("qaic: mhi_qaic_ctrl_init failed %d\n", ret);
-		goto free_pci;
-	}
-
 	return 0;
 
-free_pci:
-	pci_unregister_driver(&qaic_pci_driver);
 free_mhi:
 	mhi_driver_unregister(&qaic_mhi_driver);
 	return ret;
@@ -634,7 +625,6 @@ static void __exit qaic_exit(void)
 	 * reinitializing the link_up state after the cleanup is done.
 	 */
 	link_up = true;
-	mhi_qaic_ctrl_deinit();
 	pci_unregister_driver(&qaic_pci_driver);
 	mhi_driver_unregister(&qaic_mhi_driver);
 }