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NVIDIA: SAUCE: tegra-epl: publish kernel pm state to FSI

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BugLink: https://bugs.launchpad.net/bugs/2072591

Updated tegra-epl driver to publish kernel INIT,
RESUME, SUSPEND and SHUTDOWN state to FSI.

http://nvbugs/4183207

Signed-off-by: Praveen James <pjames@nvidia.com>
Signed-off-by: Satish Seelamsetti <sseelamsetti@nvidia.com>
Reviewed-by: Prathamesh Shete <pshete@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Acked-by: Noah Wager <noah.wager@canonical.com>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
This commit is contained in:
Praveen James
2023-10-26 04:53:21 +00:00
committed by Noah Wager
parent 58fc6cddde
commit a7ba9cec3b
1 changed files with 12 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/platform/tegra/tegra-epl.c
+12 -7
View File
@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2021-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// Copyright (c) 2021-2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#include <linux/module.h>
#include <linux/fs.h>
@@ -29,8 +29,11 @@
#define PM_STATE_UNI_CODE 0xFDEF
/* State Management */
#define PM_SUSPEND 6U
#define PM_SHUTDOWN PM_SUSPEND
#define EPS_DOS_INIT 0U
#define EPS_DOS_SUSPEND 3U
#define EPS_DOS_RESUME 4U
#define EPS_DOS_DEINIT 5U
#define EPS_DOS_UNKNOWN 255U
enum handshake_state {
HANDSHAKE_PENDING,
@@ -256,7 +259,7 @@ static int __maybe_unused epl_client_suspend(struct device *dev)
pr_debug("tegra-epl: suspend called\n");
if (enable_deinit_notify)
ret = epl_client_fsi_pm_notify(PM_SUSPEND);
ret = epl_client_fsi_pm_notify(EPS_DOS_SUSPEND);
hs_state = HANDSHAKE_PENDING;
return ret;
@@ -266,7 +269,8 @@ static int __maybe_unused epl_client_resume(struct device *dev)
{
pr_debug("tegra-epl: resume called\n");
return epl_client_fsi_handshake(NULL);
(void)epl_client_fsi_handshake(NULL);
return epl_client_fsi_pm_notify(EPS_DOS_RESUME);
}
static SIMPLE_DEV_PM_OPS(epl_client_pm, epl_client_suspend, epl_client_resume);
@@ -371,7 +375,8 @@ static int epl_client_probe(struct platform_device *pdev)
}
if (ret == 0) {
return epl_client_fsi_handshake(NULL);
(void) epl_client_fsi_handshake(NULL);
return epl_client_fsi_pm_notify(EPS_DOS_INIT);
}
return ret;
@@ -382,7 +387,7 @@ static void epl_client_shutdown(struct platform_device *pdev)
pr_debug("tegra-epl: shutdown called\n");
if (enable_deinit_notify)
if (epl_client_fsi_pm_notify(PM_SHUTDOWN) < 0)
if (epl_client_fsi_pm_notify(EPS_DOS_DEINIT) < 0)
pr_err("Unable to send notification to fsi\n");
hs_state = HANDSHAKE_PENDING;