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Commit f6e38df1 authored by Shimrit Malichi's avatar Shimrit Malichi
Browse files

msm: mdss: Add support for boot LED indication 



By turning on the blue LED we get a notification that the boot-
process has started. The blue LED will be turned-on in
bootloader and be turned off when HLOS display takes over.

Change-Id: Ia8f97a507a5deda9d692f0a8b53488a684f5efd2
Signed-off-by: default avatarShimrit Malichi <smalichi@codeaurora.org>
parent 9b973c48

Documentation/devicetree/bindings/fb/mdss-mdp.txt

+3 −0
Original line number Diff line number Diff line
@@ -499,6 +499,9 @@ Subnode properties: 
- qcom,mdss-idle-power-collapse-enabled: Boolean property that enables support

					for mdss power collapse in idle

					screen use cases with smart panels.

- qcom,boot-indication-enabled: Boolean property that enables turning on the blue

				LED for notifying that the device is in boot

				process.



Example:

	mdss_mdp: qcom,mdss_mdp@fd900000 {

drivers/video/msm/mdss/mdss_fb.c

+15 −2
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
 * Core MDSS framebuffer driver.

 *

 * Copyright (C) 2007 Google Incorporated

 * Copyright (c) 2008-2014, The Linux Foundation. All rights reserved.

 * Copyright (c) 2008-2015, The Linux Foundation. All rights reserved.

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and
@@ -27,7 +27,6 @@ 
#include <linux/init.h>

#include <linux/ioport.h>

#include <linux/kernel.h>

#include <linux/leds.h>

#include <linux/memory.h>

#include <linux/mm.h>

#include <linux/module.h>
@@ -216,6 +215,11 @@ static void mdss_fb_set_bl_brightness(struct led_classdev *led_cdev, 
	struct msm_fb_data_type *mfd = dev_get_drvdata(led_cdev->dev->parent);

	int bl_lvl;



	if (mfd->boot_notification_led) {

		led_trigger_event(mfd->boot_notification_led, 0);

		mfd->boot_notification_led = NULL;

	}



	if (value > mfd->panel_info->brightness_max)

		value = mfd->panel_info->brightness_max;
@@ -716,6 +720,15 @@ static int mdss_fb_probe(struct platform_device *pdev) 
		mfd->split_mode = MDP_DUAL_LM_DUAL_DISPLAY;



	mfd->mdp = *mdp_instance;



	rc = of_property_read_bool(pdev->dev.of_node,

		"qcom,boot-indication-enabled");



	if (rc) {

		led_trigger_register_simple("boot-indication",

			&(mfd->boot_notification_led));

	}



	INIT_LIST_HEAD(&mfd->proc_list);



	mutex_init(&mfd->bl_lock);

drivers/video/msm/mdss/mdss_fb.h

+3 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2008-2014, The Linux Foundation. All rights reserved.

/* Copyright (c) 2008-2015, 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
@@ -19,6 +19,7 @@ 
#include <linux/msm_mdp.h>

#include <linux/types.h>

#include <linux/notifier.h>

#include <linux/leds.h>



#include "mdss_panel.h"

#include "mdss_mdp_splash_logo.h"
@@ -284,6 +285,7 @@ struct msm_fb_data_type { 


	u32 wait_for_kickoff;

	u32 thermal_level;

	struct led_trigger *boot_notification_led;

};



static inline void mdss_fb_update_notify_update(struct msm_fb_data_type *mfd)