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Commit 75178f00 authored by Xiaowen Wu's avatar Xiaowen Wu Committed by Gerrit - the friendly Code Review server
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drm/msm: move msm notify functon from msm to soc 



Move msm notify helper functions from msm to soc to make sure
the function is valid if DRM MSM is not compiled.

Also add MSM_DRM_TECHPACK option to select dependent modules
that are selected by DRM MSM. This will allow defconfig to
have the flexibility to select builtin DRM MSM or external
techpack.

Change-Id: I6b0cc8f31b5c185907683c6347e5a594fa2101ad
Signed-off-by: default avatarXiaowen Wu <wxiaowen@codeaurora.org>
parent 942b1f1f

drivers/soc/qcom/Kconfig

+36 −0
Original line number Diff line number Diff line
@@ -896,6 +896,42 @@ config MSM_PERFORMANCE 
	when requested by the userspace by changing the cpufreq policy

	fmin and fmax.



config MSM_DRM_NOTIFY

	bool

	depends on !DRM_MSM

	help

	  This driver can register and receive notification for MSM_DRM

	  power event in external module. When display power state is

	  updated, any modules registered to the block chain will get

	  notified.



config MSM_DRM_TECHPACK

	bool "Enable MSM DRM from techpack"

	depends on DRM

	depends on ARCH_QCOM || (ARM && COMPILE_TEST)

	depends on OF

	depends on MMU

	depends on !DRM_MSM

	select QCOM_MDT_LOADER if ARCH_QCOM

	select REGULATOR

	select DRM_KMS_HELPER

	select DRM_PANEL

	select SHMEM

	select TMPFS

	select QCOM_SCM

	select SND_SOC_HDMI_CODEC if SND_SOC

	select SYNC_FILE

	select MSM_EXT_DISPLAY

	select PM_GENERIC_DOMAINS

	select V4L2_MEM2MEM_DEV

	select DRM_MIPI_DSI

	select MSM_DRM_NOTIFY

	help

	  The DRM MSM TECHPACK will select modules that are required by

	  DRM MSM module. This option is only used when DRM MSM is loaded

	  from external techpack, and is mutually exclusive with builtin

	  DRM MSM module.



config QMP_DEBUGFS_CLIENT

	bool "Debugfs Client to communicate with AOP using QMP protocol"

	depends on DEBUG_FS

drivers/soc/qcom/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -96,6 +96,7 @@ ifdef CONFIG_MSM_RPM_SMD 
endif

obj-$(CONFIG_QMP_DEBUGFS_CLIENT) += qmp-debugfs-client.o

obj-$(CONFIG_MSM_PERFORMANCE) += msm_performance.o

obj-$(CONFIG_MSM_DRM_NOTIFY) += msm_drm_notify.o

ifdef CONFIG_DEBUG_FS

obj-$(CONFIG_MSM_RPM_SMD)   +=  rpm-smd-debug.o

endif

drivers/soc/qcom/msm_drm_notify.c

0 → 100644
+58 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2020, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 */



#include <linux/msm_drm_notify.h>



static BLOCKING_NOTIFIER_HEAD(msm_drm_notifier_list);



/**

 * msm_drm_register_client - register a client notifier

 * @nb: notifier block to callback on events

 *

 * This function registers a notifier callback function

 * to msm_drm_notifier_list, which would be called when

 * received unblank/power down event.

 */

int msm_drm_register_client(struct notifier_block *nb)

{

	return blocking_notifier_chain_register(&msm_drm_notifier_list,

						nb);

}

EXPORT_SYMBOL(msm_drm_register_client);



/**

 * msm_drm_unregister_client - unregister a client notifier

 * @nb: notifier block to callback on events

 *

 * This function unregisters the callback function from

 * msm_drm_notifier_list.

 */

int msm_drm_unregister_client(struct notifier_block *nb)

{

	return blocking_notifier_chain_unregister(&msm_drm_notifier_list,

						  nb);

}

EXPORT_SYMBOL(msm_drm_unregister_client);



/**

 * msm_drm_notifier_call_chain - notify clients of drm_events

 * @val: event MSM_DRM_EARLY_EVENT_BLANK or MSM_DRM_EVENT_BLANK

 * @v: notifier data, inculde display id and display blank

 *     event(unblank or power down).

 */

int msm_drm_notifier_call_chain(unsigned long val, void *v)

{

	return blocking_notifier_call_chain(&msm_drm_notifier_list, val,

					    v);

}

EXPORT_SYMBOL(msm_drm_notifier_call_chain);