Commit 9a63f0f4 authored by Thierry Reding's avatar Thierry Reding Committed by Jassi Brar
Browse files

mailbox: tegra-hsp: Add suspend/resume support 



Upon resuming from a system sleep state, the interrupts for all active
shared mailboxes need to be reenabled, otherwise they will not work.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarJassi Brar <jaswinder.singh@linaro.org>
parent 91b1b1c3

drivers/mailbox/tegra-hsp.c

+19 −0
Original line number Diff line number Diff line
@@ -18,6 +18,7 @@ 
#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/platform_device.h>

#include <linux/pm.h>

#include <linux/slab.h>



#include <dt-bindings/mailbox/tegra186-hsp.h>
@@ -823,6 +824,23 @@ static int tegra_hsp_remove(struct platform_device *pdev) 
	return 0;

}



static int tegra_hsp_resume(struct device *dev)

{

	struct tegra_hsp *hsp = dev_get_drvdata(dev);

	unsigned int i;



	for (i = 0; i < hsp->num_sm; i++) {

		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];



		if (mb->channel.chan->cl)

			tegra_hsp_mailbox_startup(mb->channel.chan);

	}



	return 0;

}



static SIMPLE_DEV_PM_OPS(tegra_hsp_pm_ops, NULL, tegra_hsp_resume);



static const struct tegra_hsp_db_map tegra186_hsp_db_map[] = {

	{ "ccplex", TEGRA_HSP_DB_MASTER_CCPLEX, HSP_DB_CCPLEX, },

	{ "bpmp",   TEGRA_HSP_DB_MASTER_BPMP,   HSP_DB_BPMP,   },
@@ -849,6 +867,7 @@ static struct platform_driver tegra_hsp_driver = { 
	.driver = {

		.name = "tegra-hsp",

		.of_match_table = tegra_hsp_match,

		.pm = &tegra_hsp_pm_ops,

	},

	.probe = tegra_hsp_probe,

	.remove = tegra_hsp_remove,

CRA Git | Maintained and supported by SUSTech CRA and CCSE