Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 65480aa5 authored by Santosh Dronamraju's avatar Santosh Dronamraju
Browse files

firmware: qcom: Register call back functions for hibernation 



Register the call back functions for freeze, restore
and thaw for tzlog driver to support hibernation.

Change-Id: Iefbac150539f564f168273db5343834345760ecd
Signed-off-by: default avatarSantosh Dronamraju <sdronamr@codeaurora.org>
parent 094d9930

drivers/firmware/qcom/tz_log.c

+35 −2
Original line number Diff line number Diff line 
/* Copyright (c) 2011-2019, The Linux Foundation. All rights reserved.

/* Copyright (c) 2011-2020, 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
@@ -25,6 +25,7 @@ 
#include <linux/of.h>

#include <linux/dma-buf.h>

#include <linux/ion_kernel.h>

#include <linux/pm.h>



#include <soc/qcom/scm.h>

#include <soc/qcom/qseecomi.h>
@@ -1130,7 +1131,6 @@ static int tz_log_probe(struct platform_device *pdev) 
	return -ENXIO;

}





static int tz_log_remove(struct platform_device *pdev)

{

	kzfree(tzdbg.diag_buf);
@@ -1141,6 +1141,38 @@ static int tz_log_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM

static int tz_log_freeze(struct device *dev)

{

	dma_free_coherent(dev, QSEE_LOG_BUF_SIZE, (void *)g_qsee_log,

				coh_pmem);



	return 0;

}



static int tz_log_restore(struct device *dev)

{

	/* Register the log bugger at TZ during hibernation resume.

	 * After hibernation the log buffer is with HLOS as TZ encountered

	 * a coldboot sequence.

	 */

	tzdbg_register_qsee_log_buf(to_platform_device(dev));



	return 0;

}



static const struct dev_pm_ops tz_log_pmops = {

	.freeze = tz_log_freeze,

	.restore = tz_log_restore,

	.thaw = tz_log_restore,

};



#define TZ_LOG_PMOPS (&tz_log_pmops)



#else

#define TZ_LOG_PMOPS NULL

#endif



static const struct of_device_id tzlog_match[] = {

	{	.compatible = "qcom,tz-log",

	},
@@ -1155,6 +1187,7 @@ static struct platform_driver tz_log_driver = { 
		.owner = THIS_MODULE,

		.of_match_table = tzlog_match,

		.probe_type = PROBE_PREFER_ASYNCHRONOUS,

		.pm = TZ_LOG_PMOPS,

	},

};