linux-kernel - [PATCH v3 1/3] media: camss: vfe: implement pm domain ops for v4.1

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Message-Id: <20241102-camss-msm8953-v3-1-7041c9fa7a58@mainlining.org>
Date: Sat, 02 Nov 2024 23:39:12 +0100
From: Barnabás Czémán <barnabas.czeman@...nlining.org>
To: Robert Foss <rfoss@...nel.org>, Todor Tomov <todor.too@...il.com>, 
 Bryan O'Donoghue <bryan.odonoghue@...aro.org>, 
 Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Barnabas Czeman <barnabas.czeman@...nlining.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: [PATCH v3 1/3] media: camss: vfe: implement pm domain ops for v4.1

MSM8917 and MSM8953 have multiple VFE power-domains they
have to be powered on/off explicitly.

Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
---
 drivers/media/platform/qcom/camss/camss-vfe-4-1.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-vfe-4-1.c b/drivers/media/platform/qcom/camss/camss-vfe-4-1.c
index 1bd3a6ef1d04d8610fd1bee0c22cdbc147c98de5..9a9007c3ff33b40f4c88cd30283f0ad42f8e8d00 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-4-1.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-4-1.c
@@ -938,7 +938,10 @@ static irqreturn_t vfe_isr(int irq, void *dev)
  */
 static void vfe_4_1_pm_domain_off(struct vfe_device *vfe)
 {
-	/* nop */
+	if (!vfe->res->has_pd)
+		return;
+
+	vfe_pm_domain_off(vfe);
 }
 
 /*
@@ -947,7 +950,10 @@ static void vfe_4_1_pm_domain_off(struct vfe_device *vfe)
  */
 static int vfe_4_1_pm_domain_on(struct vfe_device *vfe)
 {
-	return 0;
+	if (!vfe->res->has_pd)
+		return 0;
+
+	return vfe_pm_domain_on(vfe);
 }
 
 static const struct vfe_hw_ops_gen1 vfe_ops_gen1_4_1 = {

-- 
2.47.0