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Commit eac58634 authored by Venkata Prahlad Valluru's avatar Venkata Prahlad Valluru Committed by Gerrit - the friendly Code Review server
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video: fbdev: msm: add TWM mode sysfs node 



Userspace SW will use this sysfs node to
notify TWM entry and exit.

Change-Id: I72730620ce7bca32439054e7ef3f17ae7fe29e19
Signed-off-by: default avatarVenkata Prahlad Valluru <vvalluru@codeaurora.org>
parent 6ae0f106

drivers/video/fbdev/msm/mdss.h

+2 −1
Original line number Original line Diff line number Diff line 
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2018, 2020, The Linux Foundation. All rights reserved.

 *

 *

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

 * 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

 * it under the terms of the GNU General Public License version 2 and
@@ -489,6 +489,7 @@ struct mdss_data_type { 
	u32 min_prefill_lines; /* this changes within different chipsets */

	u32 min_prefill_lines; /* this changes within different chipsets */

	u32 props;

	u32 props;





	bool twm_en;

	int handoff_pending;

	int handoff_pending;

	bool idle_pc;

	bool idle_pc;

	struct mdss_perf_tune perf_tune;

	struct mdss_perf_tune perf_tune;

drivers/video/fbdev/msm/mdss_mdp.c

+43 −1
Original line number Original line Diff line number Diff line 
/*

/*

 * MDSS MDP Interface (used by framebuffer core)

 * MDSS MDP Interface (used by framebuffer core)

 *

 *

 * Copyright (c) 2007-2018, The Linux Foundation. All rights reserved.

 * Copyright (c) 2007-2018, 2020, The Linux Foundation. All rights reserved.

 * Copyright (C) 2007 Google Incorporated

 * Copyright (C) 2007 Google Incorporated

 *

 *

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

 * This software is licensed under the terms of the GNU General Public
@@ -2632,13 +2632,55 @@ static ssize_t mdss_mdp_store_max_limit_bw(struct device *dev, 
	return len;

	return len;

}

}





static ssize_t mdss_mdp_store_twm(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t len)

{

	struct mdss_data_type *mdata = mdss_mdp_get_mdata();

	u32 data = -1;

	ssize_t rc = 0;



	if (!mdata) {

		pr_err("Invalid mdata structure\n");

		return -EINVAL;

	}



	rc = kstrtoint(buf, 10, &data);

	if (rc) {

		pr_err("kstrtoint failed. rc=%zd\n", rc);

		return rc;

	}

	mdata->twm_en = data ? true : false;

	pr_err("TWM :  %s\n", (mdata->twm_en) ?

		"ENABLED" : "DISABLED");

	return len;

}



static ssize_t mdss_mdp_show_twm(struct device *dev,

		struct device_attribute *attr, char *buf)

{

	struct mdss_data_type *mdata = mdss_mdp_get_mdata();

	ssize_t ret = 0;



	if (!mdata) {

		pr_err("Invalid mdata structure\n");

		return -EINVAL;

	}



	pr_err("TWM :  %s\n", (mdata->twm_en) ?

		"ENABLED" : "DISABLED");

	ret = snprintf(buf, PAGE_SIZE, "%d\n", mdata->twm_en);

	return ret;

}



static DEVICE_ATTR(caps, 0444, mdss_mdp_show_capabilities, NULL);

static DEVICE_ATTR(caps, 0444, mdss_mdp_show_capabilities, NULL);

static DEVICE_ATTR(bw_mode_bitmap, 0664,

static DEVICE_ATTR(bw_mode_bitmap, 0664,

		mdss_mdp_read_max_limit_bw, mdss_mdp_store_max_limit_bw);

		mdss_mdp_read_max_limit_bw, mdss_mdp_store_max_limit_bw);

static DEVICE_ATTR(twm_enable, 0664, mdss_mdp_show_twm, mdss_mdp_store_twm);





static struct attribute *mdp_fs_attrs[] = {

static struct attribute *mdp_fs_attrs[] = {

	&dev_attr_caps.attr,

	&dev_attr_caps.attr,

	&dev_attr_bw_mode_bitmap.attr,

	&dev_attr_bw_mode_bitmap.attr,

	&dev_attr_twm_enable.attr,

	NULL

	NULL

};

};

drivers/video/fbdev/msm/mdss_mdp_overlay.c

+9 −2
Original line number Original line Diff line number Diff line 
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2018, 2020, The Linux Foundation. All rights reserved.

 *

 *

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

 * 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

 * it under the terms of the GNU General Public License version 2 and
@@ -6566,6 +6566,13 @@ static void mdss_mdp_signal_retire_fence(struct msm_fb_data_type *mfd, 
	pr_debug("Signaled (%d) pending retire fence\n", retire_cnt);

	pr_debug("Signaled (%d) pending retire fence\n", retire_cnt);

}

}





static bool mdss_mdp_is_twm_en(void)

{

	struct mdss_data_type *mdata = mdss_mdp_get_mdata();



	return (mdata && mdata->twm_en);

}



int mdss_mdp_overlay_init(struct msm_fb_data_type *mfd)

int mdss_mdp_overlay_init(struct msm_fb_data_type *mfd)

{

{

	struct device *dev = mfd->fbi->dev;

	struct device *dev = mfd->fbi->dev;
@@ -6613,7 +6620,7 @@ int mdss_mdp_overlay_init(struct msm_fb_data_type *mfd) 
	mdp5_interface->configure_panel = mdss_mdp_update_panel_info;

	mdp5_interface->configure_panel = mdss_mdp_update_panel_info;

	mdp5_interface->input_event_handler = mdss_mdp_input_event_handler;

	mdp5_interface->input_event_handler = mdss_mdp_input_event_handler;

	mdp5_interface->signal_retire_fence = mdss_mdp_signal_retire_fence;

	mdp5_interface->signal_retire_fence = mdss_mdp_signal_retire_fence;

	mdp5_interface->is_twm_en = NULL;

	mdp5_interface->is_twm_en = mdss_mdp_is_twm_en;





	if (mfd->panel_info->type == WRITEBACK_PANEL) {

	if (mfd->panel_info->type == WRITEBACK_PANEL) {

		mdp5_interface->atomic_validate =

		mdp5_interface->atomic_validate =