diff options
| author | Thierry Reding <treding@nvidia.com> | 2018-11-28 10:54:14 +0100 |
|---|---|---|
| committer | Jassi Brar <jaswinder.singh@linaro.org> | 2018-12-21 22:31:26 -0600 |
| commit | 9a63f0f4059955210ae74c745513332a568e9738 (patch) | |
| tree | 16e1998b2b6590961e4b2ef4b233392f36e08c51 /drivers/mailbox/tegra-hsp.c | |
| parent | 91b1b1c3da8a8fd9ee4538e00dd5e5fb5be1cdb4 (diff) | |
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: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'drivers/mailbox/tegra-hsp.c')
| -rw-r--r-- | drivers/mailbox/tegra-hsp.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/mailbox/tegra-hsp.c b/drivers/mailbox/tegra-hsp.c index a4ec18d76cba..07d1fbff3642 100644 --- a/drivers/mailbox/tegra-hsp.c +++ b/drivers/mailbox/tegra-hsp.c @@ -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, |