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Subject: media: qcom: camss: Convert to per-VFE pointer for power-domain
linkages
Author: Bryan O'Donoghue <bryan.odonog...@linaro.org>
Date: Thu Nov 23 17:03:01 2023 +0000
Right now we use the top-level camss structure to provide pointers via
VFE id index back to genpd linkages.
In effect this hard-codes VFE indexes to power-domain indexes in the
dtsi and mandates a very particular ordering of power domains in the
dtsi, which bears no relationship to a real hardware dependency.
As a first step to rationalising the VFE power-domain code and breaking
the magic indexing in dtsi use per-VFE pointers to genpd linkages.
The top-level index in msm_vfe_subdev_init is still used to attain the
initial so no functional or logical change arises from this change.
Reviewed-by: Konrad Dybcio <konrad.dyb...@linaro.org>
Tested-by: Matti Lehtimäki <matti.lehtim...@gmail.com>
Signed-off-by: Bryan O'Donoghue <bryan.odonog...@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/platform/qcom/camss/camss-vfe-170.c | 15 +++++++--------
drivers/media/platform/qcom/camss/camss-vfe-4-7.c | 15 +++++----------
drivers/media/platform/qcom/camss/camss-vfe-4-8.c | 13 +++++--------
drivers/media/platform/qcom/camss/camss-vfe-480.c | 15 +++++++--------
drivers/media/platform/qcom/camss/camss-vfe.c | 3 +++
drivers/media/platform/qcom/camss/camss-vfe.h | 2 ++
6 files changed, 29 insertions(+), 34 deletions(-)
---
diff --git a/drivers/media/platform/qcom/camss/camss-vfe-170.c
b/drivers/media/platform/qcom/camss/camss-vfe-170.c
index 0b211fed1276..7451484317cc 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-170.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-170.c
@@ -638,7 +638,7 @@ static void vfe_pm_domain_off(struct vfe_device *vfe)
if (vfe->id >= camss->res->vfe_num)
return;
- device_link_del(camss->genpd_link[vfe->id]);
+ device_link_del(vfe->genpd_link);
}
/*
@@ -648,16 +648,15 @@ static void vfe_pm_domain_off(struct vfe_device *vfe)
static int vfe_pm_domain_on(struct vfe_device *vfe)
{
struct camss *camss = vfe->camss;
- enum vfe_line_id id = vfe->id;
- if (id >= camss->res->vfe_num)
+ if (vfe->id >= camss->res->vfe_num)
return 0;
- camss->genpd_link[id] = device_link_add(camss->dev, camss->genpd[id],
- DL_FLAG_STATELESS |
- DL_FLAG_PM_RUNTIME |
- DL_FLAG_RPM_ACTIVE);
- if (!camss->genpd_link[id])
+ vfe->genpd_link = device_link_add(camss->dev, vfe->genpd,
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+ if (!vfe->genpd_link)
return -EINVAL;
return 0;
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 b65ed0fef595..2b4e7e039407 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-4-7.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-4-7.c
@@ -1109,14 +1109,10 @@ static void vfe_isr_read(struct vfe_device *vfe, u32
*value0, u32 *value1)
*/
static void vfe_pm_domain_off(struct vfe_device *vfe)
{
- struct camss *camss;
-
if (!vfe)
return;
- camss = vfe->camss;
-
- device_link_del(camss->genpd_link[vfe->id]);
+ device_link_del(vfe->genpd_link);
}
/*
@@ -1126,13 +1122,12 @@ static void vfe_pm_domain_off(struct vfe_device *vfe)
static int vfe_pm_domain_on(struct vfe_device *vfe)
{
struct camss *camss = vfe->camss;
- enum vfe_line_id id = vfe->id;
- camss->genpd_link[id] = device_link_add(camss->dev, camss->genpd[id],
DL_FLAG_STATELESS |
- DL_FLAG_PM_RUNTIME |
DL_FLAG_RPM_ACTIVE);
+ vfe->genpd_link = device_link_add(camss->dev, vfe->genpd,
DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
DL_FLAG_RPM_ACTIVE);
- if (!camss->genpd_link[id]) {
- dev_err(vfe->camss->dev, "Failed to add VFE#%d to power
domain\n", id);
+ if (!vfe->genpd_link) {
+ dev_err(vfe->camss->dev, "Failed to add VFE#%d to power
domain\n", vfe->id);
return -EINVAL;
}
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 7b3805177f03..5e9534324130 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-4-8.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-4-8.c
@@ -1099,9 +1099,7 @@ static void vfe_isr_read(struct vfe_device *vfe, u32
*value0, u32 *value1)
*/
static void vfe_pm_domain_off(struct vfe_device *vfe)
{
- struct camss *camss = vfe->camss;
-
- device_link_del(camss->genpd_link[vfe->id]);
+ device_link_del(vfe->genpd_link);
}
/*
@@ -1111,13 +1109,12 @@ static void vfe_pm_domain_off(struct vfe_device *vfe)
static int vfe_pm_domain_on(struct vfe_device *vfe)
{
struct camss *camss = vfe->camss;
- enum vfe_line_id id = vfe->id;
- camss->genpd_link[id] = device_link_add(camss->dev, camss->genpd[id],
DL_FLAG_STATELESS |
- DL_FLAG_PM_RUNTIME |
DL_FLAG_RPM_ACTIVE);
+ vfe->genpd_link = device_link_add(camss->dev, vfe->genpd,
DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
DL_FLAG_RPM_ACTIVE);
- if (!camss->genpd_link[id]) {
- dev_err(vfe->camss->dev, "Failed to add VFE#%d to power
domain\n", id);
+ if (!vfe->genpd_link) {
+ dev_err(vfe->camss->dev, "Failed to add VFE#%d to power
domain\n", vfe->id);
return -EINVAL;
}
diff --git a/drivers/media/platform/qcom/camss/camss-vfe-480.c
b/drivers/media/platform/qcom/camss/camss-vfe-480.c
index f2368b77fc6d..a70b8633bb3e 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe-480.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe-480.c
@@ -463,7 +463,7 @@ static void vfe_pm_domain_off(struct vfe_device *vfe)
if (vfe->id >= camss->res->vfe_num)
return;
- device_link_del(camss->genpd_link[vfe->id]);
+ device_link_del(vfe->genpd_link);
}
/*
@@ -473,16 +473,15 @@ static void vfe_pm_domain_off(struct vfe_device *vfe)
static int vfe_pm_domain_on(struct vfe_device *vfe)
{
struct camss *camss = vfe->camss;
- enum vfe_line_id id = vfe->id;
- if (id >= camss->res->vfe_num)
+ if (vfe->id >= camss->res->vfe_num)
return 0;
- camss->genpd_link[id] = device_link_add(camss->dev, camss->genpd[id],
- DL_FLAG_STATELESS |
- DL_FLAG_PM_RUNTIME |
- DL_FLAG_RPM_ACTIVE);
- if (!camss->genpd_link[id])
+ vfe->genpd_link = device_link_add(camss->dev, vfe->genpd,
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+ if (!vfe->genpd_link)
return -EINVAL;
return 0;
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c
b/drivers/media/platform/qcom/camss/camss-vfe.c
index 74fe577a84aa..32a9cd32ffde 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss/camss-vfe.c
@@ -1345,6 +1345,9 @@ int msm_vfe_subdev_init(struct camss *camss, struct
vfe_device *vfe,
if (!res->line_num)
return -EINVAL;
+ if (res->has_pd)
+ vfe->genpd = camss->genpd[id];
+
vfe->line_num = res->line_num;
vfe->ops->subdev_init(dev, vfe);
diff --git a/drivers/media/platform/qcom/camss/camss-vfe.h
b/drivers/media/platform/qcom/camss/camss-vfe.h
index 09baded0dcdd..c1c50023d487 100644
--- a/drivers/media/platform/qcom/camss/camss-vfe.h
+++ b/drivers/media/platform/qcom/camss/camss-vfe.h
@@ -150,6 +150,8 @@ struct vfe_device {
const struct vfe_hw_ops_gen1 *ops_gen1;
struct vfe_isr_ops isr_ops;
struct camss_video_ops video_ops;
+ struct device *genpd;
+ struct device_link *genpd_link;
};
struct camss_subdev_resources;
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