From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Robert Foss <robert.foss@linaro.org>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.15.y 4/6] media: camss: vfe: Rework vfe_hw_version_read() function definition
Date: Tue, 10 Nov 2026 23:13:36 -0500 [thread overview]
Message-ID: <20261111041132.1029567-4-sashal@kernel.org> (raw)
In-Reply-To: <20261111041132.1029567-1-sashal@kernel.org>
From: Robert Foss <robert.foss@linaro.org>
[ Upstream commit d2e86540366e1701baf852ee0301323ff113459c ]
Expose the VFE version by returning the value read from the HW_VERSION
register.
Secondly, change the name of this function to conform with the CSID
equivalent.
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Stable-dep-of: e5d4b0e69a40 ("media: qcom: camss: vfe: Fix VFE reset while another line is streaming")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/platform/qcom/camss/camss-vfe-170.c | 6 ++++--
drivers/media/platform/qcom/camss/camss-vfe-4-1.c | 6 ++++--
drivers/media/platform/qcom/camss/camss-vfe-4-7.c | 6 ++++--
drivers/media/platform/qcom/camss/camss-vfe-4-8.c | 6 ++++--
drivers/media/platform/qcom/camss/camss-vfe.c | 2 +-
drivers/media/platform/qcom/camss/camss-vfe.h | 2 +-
6 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/drivers/media/platform/qcom/camss/camss-vfe-170.c b/drivers/media/platform/qcom/camss/camss-vfe-170.c
index ad3c375a33fbf..e2ca0aec3a697 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-170.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-170.c
@@ -176,7 +176,7 @@
#define VFE_BUS_WM_FRAME_INC(n) (0x2258 + (n) * 0x100)
#define VFE_BUS_WM_BURST_LIMIT(n) (0x225c + (n) * 0x100)
-static void vfe_hw_version_read(struct vfe_device *vfe)
+static u32 vfe_hw_version(struct vfe_device *vfe)
{
u32 hw_version = readl_relaxed(vfe->base + VFE_HW_VERSION);
@@ -186,6 +186,8 @@ static void vfe_hw_version_read(struct vfe_device *vfe)
dev_dbg(vfe->camss->dev, "VFE HW Version = %u.%u.%u\n",
gen, rev, step);
+
+ return hw_version;
}
static inline void vfe_reg_clr(struct vfe_device *vfe, u32 reg, u32 clr_bits)
@@ -745,7 +747,7 @@ static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
const struct vfe_hw_ops vfe_ops_170 = {
.global_reset = vfe_global_reset,
- .hw_version_read = vfe_hw_version_read,
+ .hw_version = vfe_hw_version,
.isr_read = vfe_isr_read,
.isr = vfe_isr,
.pm_domain_off = vfe_pm_domain_off,
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 614c266e8cd1f..7b7c9a0aaab28 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-4-1.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-4-1.c
@@ -210,11 +210,13 @@
#define MSM_VFE_VFE0_UB_SIZE 1023
#define MSM_VFE_VFE0_UB_SIZE_RDI (MSM_VFE_VFE0_UB_SIZE / 3)
-static void vfe_hw_version_read(struct vfe_device *vfe)
+static u32 vfe_hw_version(struct vfe_device *vfe)
{
u32 hw_version = readl_relaxed(vfe->base + VFE_0_HW_VERSION);
dev_dbg(vfe->camss->dev, "VFE HW Version = 0x%08x\n", hw_version);
+
+ return hw_version;
}
static u16 vfe_get_ub_size(u8 vfe_id)
@@ -1004,7 +1006,7 @@ static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
const struct vfe_hw_ops vfe_ops_4_1 = {
.global_reset = vfe_global_reset,
- .hw_version_read = vfe_hw_version_read,
+ .hw_version = vfe_hw_version,
.isr_read = vfe_isr_read,
.isr = vfe_isr,
.pm_domain_off = vfe_pm_domain_off,
diff --git a/drivers/media/platform/qcom/camss/camss-vfe-4-7.c b/drivers/media/platform/qcom/camss/camss-vfe-4-7.c
index aa175e0f6331c..2836b12ec9891 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-4-7.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-4-7.c
@@ -254,11 +254,13 @@
#define MSM_VFE_VFE1_UB_SIZE 1535
#define MSM_VFE_VFE1_UB_SIZE_RDI (MSM_VFE_VFE1_UB_SIZE / 3)
-static void vfe_hw_version_read(struct vfe_device *vfe)
+static u32 vfe_hw_version(struct vfe_device *vfe)
{
u32 hw_version = readl_relaxed(vfe->base + VFE_0_HW_VERSION);
dev_dbg(vfe->camss->dev, "VFE HW Version = 0x%08x\n", hw_version);
+
+ return hw_version;
}
static u16 vfe_get_ub_size(u8 vfe_id)
@@ -1196,7 +1198,7 @@ static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
const struct vfe_hw_ops vfe_ops_4_7 = {
.global_reset = vfe_global_reset,
- .hw_version_read = vfe_hw_version_read,
+ .hw_version = vfe_hw_version,
.isr_read = vfe_isr_read,
.isr = vfe_isr,
.pm_domain_off = vfe_pm_domain_off,
diff --git a/drivers/media/platform/qcom/camss/camss-vfe-4-8.c b/drivers/media/platform/qcom/camss/camss-vfe-4-8.c
index b897f5163c5da..19519234f727c 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-4-8.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-4-8.c
@@ -247,11 +247,13 @@
#define MSM_VFE_VFE1_UB_SIZE 1535
#define MSM_VFE_VFE1_UB_SIZE_RDI (MSM_VFE_VFE1_UB_SIZE / 3)
-static void vfe_hw_version_read(struct vfe_device *vfe)
+static u32 vfe_hw_version(struct vfe_device *vfe)
{
u32 hw_version = readl_relaxed(vfe->base + VFE_0_HW_VERSION);
dev_dbg(vfe->camss->dev, "VFE HW Version = 0x%08x\n", hw_version);
+
+ return hw_version;
}
static inline void vfe_reg_clr(struct vfe_device *vfe, u32 reg, u32 clr_bits)
@@ -1180,7 +1182,7 @@ static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
const struct vfe_hw_ops vfe_ops_4_8 = {
.global_reset = vfe_global_reset,
- .hw_version_read = vfe_hw_version_read,
+ .hw_version = vfe_hw_version,
.isr_read = vfe_isr_read,
.isr = vfe_isr,
.pm_domain_off = vfe_pm_domain_off,
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
index 8aeba618ad380..ce8c53f07ea70 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -1300,7 +1300,7 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
return -EINVAL;
}
vfe->ops->subdev_init(dev, vfe);
- vfe->ops->hw_version_read(vfe);
+ vfe->ops->hw_version(vfe);
/* Memory */
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.h b/drivers/media/platform/qcom/camss/camss-vfe.h
index cca251816d284..f166d176cb771 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.h
+++ b/drivers/media/platform/qcom/camss/camss-vfe.h
@@ -103,7 +103,7 @@ struct vfe_device;
struct vfe_hw_ops {
void (*enable_irq_common)(struct vfe_device *vfe);
void (*global_reset)(struct vfe_device *vfe);
- void (*hw_version_read)(struct vfe_device *vfe);
+ u32 (*hw_version)(struct vfe_device *vfe);
irqreturn_t (*isr)(int irq, void *dev);
void (*isr_read)(struct vfe_device *vfe, u32 *value0, u32 *value1);
void (*pm_domain_off)(struct vfe_device *vfe);
--
2.53.0
next prev parent reply other threads:[~2026-11-11 4:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-07 11:00 FAILED: patch "[PATCH] media: qcom: camss: vfe: Fix VFE reset while another line is streaming" failed to apply to 5.15-stable tree Sasha Levin
2026-11-11 4:13 ` [PATCH 5.15.y 1/6] media: camss: vfe: Don't read hardware version needlessly Sasha Levin
2026-11-11 4:13 ` [PATCH 5.15.y 2/6] media: camss: vfe: Decrease priority of of VFE HW version to 'dbg' Sasha Levin
2026-11-11 4:13 ` [PATCH 5.15.y 3/6] media: camss: vfe: Remove vfe_hw_version_read() argument Sasha Levin
2026-11-11 4:13 ` Sasha Levin [this message]
2026-11-11 4:13 ` [PATCH 5.15.y 5/6] media: qcom: camss: Move vfe_disable into a common routine where applicable Sasha Levin
2026-11-11 4:13 ` [PATCH 5.15.y 6/6] media: qcom: camss: vfe: Fix VFE reset while another line is streaming Sasha Levin
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