linux-kernel - [PATCH v3 12/14] mei: gsc: add transition to PXP mode in resume flow

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Message-Id: <20220619133721.523546-13-alexander.usyskin@intel.com>
Date:   Sun, 19 Jun 2022 16:37:19 +0300
From:   Alexander Usyskin <alexander.usyskin@...el.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>
Cc:     Tomas Winkler <tomas.winkler@...el.com>,
        Alexander Usyskin <alexander.usyskin@...el.com>,
        Vitaly Lubart <vitaly.lubart@...el.com>,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
Subject: [PATCH v3 12/14] mei: gsc: add transition to PXP mode in resume flow

From: Vitaly Lubart <vitaly.lubart@...el.com>

Added transition to PXP mode in resume flow.

CC: Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>
Signed-off-by: Vitaly Lubart <vitaly.lubart@...el.com>
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
---
 drivers/misc/mei/gsc-me.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/misc/mei/gsc-me.c b/drivers/misc/mei/gsc-me.c
index c8a167b57cc9..71f247f5e7ca 100644
--- a/drivers/misc/mei/gsc-me.c
+++ b/drivers/misc/mei/gsc-me.c
@@ -182,11 +182,22 @@ static int __maybe_unused mei_gsc_pm_suspend(struct device *device)
 static int __maybe_unused mei_gsc_pm_resume(struct device *device)
 {
 	struct mei_device *dev = dev_get_drvdata(device);
+	struct auxiliary_device *aux_dev;
+	struct mei_aux_device *adev;
 	int err;
+	struct mei_me_hw *hw;
 
 	if (!dev)
 		return -ENODEV;
 
+	hw = to_me_hw(dev);
+	aux_dev = to_auxiliary_dev(device);
+	adev = auxiliary_dev_to_mei_aux_dev(aux_dev);
+	if (adev->ext_op_mem.start) {
+		mei_gsc_set_ext_op_mem(hw, &adev->ext_op_mem);
+		dev->pxp_mode = MEI_DEV_PXP_INIT;
+	}
+
 	err = mei_restart(dev);
 	if (err)
 		return err;
-- 
2.32.0