linux-kernel - [PATCH v7 5/5] drm/xe/xe_i2c: Add support for i2c in survivability mode

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Message-Id: <20250710071612.2714990-6-raag.jadav@intel.com>
Date: Thu, 10 Jul 2025 12:46:12 +0530
From: Raag Jadav <raag.jadav@...el.com>
To: lucas.demarchi@...el.com,
	thomas.hellstrom@...ux.intel.com,
	rodrigo.vivi@...el.com
Cc: jarkko.nikula@...ux.intel.com,
	airlied@...il.com,
	simona@...ll.ch,
	andriy.shevchenko@...ux.intel.com,
	mika.westerberg@...ux.intel.com,
	jsd@...ihalf.com,
	andi.shyti@...nel.org,
	raag.jadav@...el.com,
	riana.tauro@...el.com,
	srinivasa.adatrao@...el.com,
	michael.j.ruhl@...el.com,
	intel-xe@...ts.freedesktop.org,
	linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Andi Shyti <andi.shyti@...ux.intel.com>
Subject: [PATCH v7 5/5] drm/xe/xe_i2c: Add support for i2c in survivability mode

From: Riana Tauro <riana.tauro@...el.com>

Initialize i2c in survivability mode to allow firmware
update of Add-In Management Controller (AMC) in
survivability mode.

Signed-off-by: Riana Tauro <riana.tauro@...el.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Reviewed-by: Raag Jadav <raag.jadav@...el.com>
Reviewed-by: Andi Shyti <andi.shyti@...ux.intel.com>
---
 drivers/gpu/drm/xe/xe_survivability_mode.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_survivability_mode.c b/drivers/gpu/drm/xe/xe_survivability_mode.c
index 1f710b3fc599..41705f5d52e3 100644
--- a/drivers/gpu/drm/xe/xe_survivability_mode.c
+++ b/drivers/gpu/drm/xe/xe_survivability_mode.c
@@ -14,6 +14,7 @@
 #include "xe_device.h"
 #include "xe_gt.h"
 #include "xe_heci_gsc.h"
+#include "xe_i2c.h"
 #include "xe_mmio.h"
 #include "xe_pcode_api.h"
 #include "xe_vsec.h"
@@ -173,20 +174,22 @@ static int enable_survivability_mode(struct pci_dev *pdev)
 	survivability->mode = true;
 
 	ret = xe_heci_gsc_init(xe);
-	if (ret) {
-		/*
-		 * But if it fails, device can't enter survivability
-		 * so move it back for correct error handling
-		 */
-		survivability->mode = false;
-		return ret;
-	}
+	if (ret)
+		goto err;
 
 	xe_vsec_init(xe);
 
+	ret = xe_i2c_probe(xe);
+	if (ret)
+		goto err;
+
 	dev_err(dev, "In Survivability Mode\n");
 
 	return 0;
+
+err:
+	survivability->mode = false;
+	return ret;
 }
 
 /**
-- 
2.34.1