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SBC_builder/patch/kernel/sunxi-6.14/patches.megous/media-sun6i-csi-subdev-Use-subdev-active-state-to-store-active-.patch
andreili 7cd66477b7 Initial.
2025-06-01 01:05:27 +02:00

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From 7ca3f841e2a66d2145bedc06dbcce5044725f622 Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megi@xff.cz>
Date: Sat, 13 Jan 2024 21:24:24 +0100
Subject: media: sun6i-csi: subdev: Use subdev active state to store active
format
The sun6i_csi_bridge structure stores the active format as a struct
v4l2_mbus_framefmt instance. Now that the V4L2 subdev core supports
managing the active state, use it to replace the manually-managed
format. This simplifies the implementation of the subdev operations by
removing the need for a custom .get_fmt() handler.
The subdev state now needs to be passed manually from the .s_stream()
operation to internal functions that need to access the format. As a
result, the sun6i_csi_bridge_format() helper function is now unused and
can be dropped.
The .init_state() and .set_fmt() operations also need to be updated
accordingly. As a result, .set_fmt() now correctly propagates the format
from the sink pad to the source pad.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
(cherry picked from commit b14038f024ad84473ed79f3baecc2da9ca16d9a5)
---
.../sunxi/sun6i-csi/sun6i_csi_bridge.c | 149 +++++++++---------
.../sunxi/sun6i-csi/sun6i_csi_bridge.h | 2 -
2 files changed, 73 insertions(+), 78 deletions(-)
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
index 2303e5d2baee..92290876a8b3 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.c
@@ -13,17 +13,6 @@
#include "sun6i_csi_bridge.h"
#include "sun6i_csi_reg.h"
-/* Helpers */
-
-static void sun6i_csi_bridge_format(struct sun6i_csi_device *csi_dev,
- u32 *mbus_code, u32 *field)
-{
- if (mbus_code)
- *mbus_code = csi_dev->bridge.mbus_format.code;
- if (field)
- *field = csi_dev->bridge.mbus_format.field;
-}
-
/* Format */
static const struct sun6i_csi_bridge_format sun6i_csi_bridge_formats[] = {
@@ -217,7 +206,8 @@ static void sun6i_csi_bridge_disable(struct sun6i_csi_device *csi_dev)
}
static void
-sun6i_csi_bridge_configure_parallel(struct sun6i_csi_device *csi_dev)
+sun6i_csi_bridge_configure_parallel(struct sun6i_csi_device *csi_dev,
+ struct v4l2_subdev_state *state)
{
struct device *dev = csi_dev->dev;
struct regmap *regmap = csi_dev->regmap;
@@ -225,14 +215,14 @@ sun6i_csi_bridge_configure_parallel(struct sun6i_csi_device *csi_dev)
&csi_dev->bridge.source_parallel.endpoint;
unsigned char bus_width = endpoint->bus.parallel.bus_width;
unsigned int flags = endpoint->bus.parallel.flags;
- u32 field;
+ const struct v4l2_mbus_framefmt *sink_format;
u32 value = SUN6I_CSI_IF_CFG_IF_CSI;
- sun6i_csi_bridge_format(csi_dev, NULL, &field);
+ sink_format = v4l2_subdev_state_get_format(state, SUN6I_CSI_BRIDGE_PAD_SINK);
- if (field == V4L2_FIELD_INTERLACED ||
- field == V4L2_FIELD_INTERLACED_TB ||
- field == V4L2_FIELD_INTERLACED_BT)
+ if (sink_format->field == V4L2_FIELD_INTERLACED ||
+ sink_format->field == V4L2_FIELD_INTERLACED_TB ||
+ sink_format->field == V4L2_FIELD_INTERLACED_BT)
value |= SUN6I_CSI_IF_CFG_SRC_TYPE_INTERLACED |
SUN6I_CSI_IF_CFG_FIELD_DT_PCLK_SHIFT(1) |
SUN6I_CSI_IF_CFG_FIELD_DT_FIELD_VSYNC;
@@ -308,17 +298,18 @@ sun6i_csi_bridge_configure_parallel(struct sun6i_csi_device *csi_dev)
}
static void
-sun6i_csi_bridge_configure_mipi_csi2(struct sun6i_csi_device *csi_dev)
+sun6i_csi_bridge_configure_mipi_csi2(struct sun6i_csi_device *csi_dev,
+ struct v4l2_subdev_state *state)
{
+ const struct v4l2_mbus_framefmt *sink_format;
struct regmap *regmap = csi_dev->regmap;
u32 value = SUN6I_CSI_IF_CFG_IF_MIPI;
- u32 field;
- sun6i_csi_bridge_format(csi_dev, NULL, &field);
+ sink_format = v4l2_subdev_state_get_format(state, SUN6I_CSI_BRIDGE_PAD_SINK);
- if (field == V4L2_FIELD_INTERLACED ||
- field == V4L2_FIELD_INTERLACED_TB ||
- field == V4L2_FIELD_INTERLACED_BT)
+ if (sink_format->field == V4L2_FIELD_INTERLACED ||
+ sink_format->field == V4L2_FIELD_INTERLACED_TB ||
+ sink_format->field == V4L2_FIELD_INTERLACED_BT)
value |= SUN6I_CSI_IF_CFG_SRC_TYPE_INTERLACED;
else
value |= SUN6I_CSI_IF_CFG_SRC_TYPE_PROGRESSIVE;
@@ -326,19 +317,20 @@ sun6i_csi_bridge_configure_mipi_csi2(struct sun6i_csi_device *csi_dev)
regmap_write(regmap, SUN6I_CSI_IF_CFG_REG, value);
}
-static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev)
+static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev,
+ struct v4l2_subdev_state *state)
{
struct regmap *regmap = csi_dev->regmap;
bool capture_streaming = csi_dev->capture.state.streaming;
const struct sun6i_csi_bridge_format *bridge_format;
const struct sun6i_csi_capture_format *capture_format;
- u32 mbus_code, field, pixelformat;
+ const struct v4l2_mbus_framefmt *sink_format;
+ u32 pixelformat;
u8 input_format, input_yuv_seq, output_format;
u32 value = 0;
- sun6i_csi_bridge_format(csi_dev, &mbus_code, &field);
-
- bridge_format = sun6i_csi_bridge_format_find(mbus_code);
+ sink_format = v4l2_subdev_state_get_format(state, SUN6I_CSI_BRIDGE_PAD_SINK);
+ bridge_format = sun6i_csi_bridge_format_find(sink_format->code);
if (WARN_ON(!bridge_format))
return;
@@ -358,9 +350,9 @@ static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev)
if (capture_format->input_yuv_seq_invert)
input_yuv_seq = bridge_format->input_yuv_seq_invert;
- if (field == V4L2_FIELD_INTERLACED ||
- field == V4L2_FIELD_INTERLACED_TB ||
- field == V4L2_FIELD_INTERLACED_BT)
+ if (sink_format->field == V4L2_FIELD_INTERLACED ||
+ sink_format->field == V4L2_FIELD_INTERLACED_TB ||
+ sink_format->field == V4L2_FIELD_INTERLACED_BT)
output_format = capture_format->output_format_field;
else
output_format = capture_format->output_format_frame;
@@ -371,9 +363,9 @@ static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev)
value |= SUN6I_CSI_CH_CFG_INPUT_FMT(input_format);
value |= SUN6I_CSI_CH_CFG_INPUT_YUV_SEQ(input_yuv_seq);
- if (field == V4L2_FIELD_TOP)
+ if (sink_format->field == V4L2_FIELD_TOP)
value |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD0;
- else if (field == V4L2_FIELD_BOTTOM)
+ else if (sink_format->field == V4L2_FIELD_BOTTOM)
value |= SUN6I_CSI_CH_CFG_FIELD_SEL_FIELD1;
else
value |= SUN6I_CSI_CH_CFG_FIELD_SEL_EITHER;
@@ -382,16 +374,17 @@ static void sun6i_csi_bridge_configure_format(struct sun6i_csi_device *csi_dev)
}
static void sun6i_csi_bridge_configure(struct sun6i_csi_device *csi_dev,
- struct sun6i_csi_bridge_source *source)
+ struct sun6i_csi_bridge_source *source,
+ struct v4l2_subdev_state *state)
{
struct sun6i_csi_bridge *bridge = &csi_dev->bridge;
if (source == &bridge->source_parallel)
- sun6i_csi_bridge_configure_parallel(csi_dev);
+ sun6i_csi_bridge_configure_parallel(csi_dev, state);
else
- sun6i_csi_bridge_configure_mipi_csi2(csi_dev);
+ sun6i_csi_bridge_configure_mipi_csi2(csi_dev, state);
- sun6i_csi_bridge_configure_format(csi_dev);
+ sun6i_csi_bridge_configure_format(csi_dev, state);
}
/* V4L2 Subdev */
@@ -406,6 +399,7 @@ static int sun6i_csi_bridge_s_stream(struct v4l2_subdev *subdev, int on)
struct sun6i_csi_bridge_source *source;
struct v4l2_subdev *source_subdev;
struct media_pad *remote_pad;
+ struct v4l2_subdev_state *state;
int ret;
/* Source */
@@ -441,8 +435,9 @@ static int sun6i_csi_bridge_s_stream(struct v4l2_subdev *subdev, int on)
sun6i_csi_bridge_irq_clear(csi_dev);
/* Configure */
-
- sun6i_csi_bridge_configure(csi_dev, source);
+ state = v4l2_subdev_lock_and_get_active_state(subdev);
+ sun6i_csi_bridge_configure(csi_dev, source, state);
+ v4l2_subdev_unlock_state(state);
if (capture_streaming)
sun6i_csi_capture_configure(csi_dev);
@@ -495,13 +490,9 @@ sun6i_csi_bridge_mbus_format_prepare(struct v4l2_mbus_framefmt *mbus_format)
static int sun6i_csi_bridge_init_state(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *state)
{
- struct sun6i_csi_device *csi_dev = v4l2_get_subdevdata(subdev);
unsigned int pad = SUN6I_CSI_BRIDGE_PAD_SINK;
struct v4l2_mbus_framefmt *mbus_format =
v4l2_subdev_state_get_format(state, pad);
- struct mutex *lock = &csi_dev->bridge.lock;
-
- mutex_lock(lock);
mbus_format->code = sun6i_csi_bridge_formats[0].mbus_code;
mbus_format->width = 1280;
@@ -509,8 +500,6 @@ static int sun6i_csi_bridge_init_state(struct v4l2_subdev *subdev,
sun6i_csi_bridge_mbus_format_prepare(mbus_format);
- mutex_unlock(lock);
-
return 0;
}
@@ -527,53 +516,60 @@ sun6i_csi_bridge_enum_mbus_code(struct v4l2_subdev *subdev,
return 0;
}
-static int sun6i_csi_bridge_get_fmt(struct v4l2_subdev *subdev,
- struct v4l2_subdev_state *state,
- struct v4l2_subdev_format *format)
-{
- struct sun6i_csi_device *csi_dev = v4l2_get_subdevdata(subdev);
- struct v4l2_mbus_framefmt *mbus_format = &format->format;
- struct mutex *lock = &csi_dev->bridge.lock;
-
- mutex_lock(lock);
-
- if (format->which == V4L2_SUBDEV_FORMAT_TRY)
- *mbus_format = *v4l2_subdev_state_get_format(state,
- format->pad);
- else
- *mbus_format = csi_dev->bridge.mbus_format;
-
- mutex_unlock(lock);
-
- return 0;
-}
-
static int sun6i_csi_bridge_set_fmt(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *state,
struct v4l2_subdev_format *format)
{
- struct sun6i_csi_device *csi_dev = v4l2_get_subdevdata(subdev);
- struct v4l2_mbus_framefmt *mbus_format = &format->format;
- struct mutex *lock = &csi_dev->bridge.lock;
+ struct v4l2_mbus_framefmt *sink_format;
+ struct v4l2_mbus_framefmt *src_format;
- mutex_lock(lock);
+ /*
+ * As the source format can't change independently of the sink format,
+ * a set operation on the source is a get.
+ */
+ if (format->pad == SUN6I_CSI_BRIDGE_PAD_SOURCE)
+ return v4l2_subdev_get_fmt(subdev, state, format);
- sun6i_csi_bridge_mbus_format_prepare(mbus_format);
+ sink_format = v4l2_subdev_state_get_format(state, SUN6I_CSI_BRIDGE_PAD_SINK);
+ /*
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
*v4l2_subdev_state_get_format(state, format->pad) =
*mbus_format;
+ */
+
+ if (!sun6i_csi_bridge_format_find(format->format.code))
+ sink_format->code = sun6i_csi_bridge_formats[0].mbus_code;
else
- csi_dev->bridge.mbus_format = *mbus_format;
+ sink_format->code = format->format.code;
+
+ sink_format->width = format->format.width;
+ sink_format->height = format->format.height;
+
+ /* Accept any colorspace as the CSI bridge isn't colorspace-aware. */
+ sink_format->colorspace = format->format.colorspace;
+ sink_format->xfer_func = format->format.xfer_func;
+ sink_format->ycbcr_enc = format->format.ycbcr_enc;
+ sink_format->quantization = format->format.quantization;
+
+ sink_format->field = V4L2_FIELD_NONE;
- mutex_unlock(lock);
+ format->format = *sink_format;
+
+ /*
+ * Propagate the format to the source pad. The CSI bridge can't
+ * transcode, the format on the source pad always matches the sink pad
+ * exactly.
+ */
+ src_format = v4l2_subdev_state_get_format(state, SUN6I_CSI_BRIDGE_PAD_SOURCE);
+ *src_format = *sink_format;
return 0;
}
static const struct v4l2_subdev_pad_ops sun6i_csi_bridge_pad_ops = {
.enum_mbus_code = sun6i_csi_bridge_enum_mbus_code,
- .get_fmt = sun6i_csi_bridge_get_fmt,
+ .get_fmt = v4l2_subdev_get_fmt,
.set_fmt = sun6i_csi_bridge_set_fmt,
};
@@ -771,8 +767,6 @@ int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev)
};
int ret;
- mutex_init(&bridge->lock);
-
/* V4L2 Subdev */
v4l2_subdev_init(subdev, &sun6i_csi_bridge_subdev_ops);
@@ -801,6 +795,9 @@ int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev)
return ret;
/* V4L2 Subdev */
+ ret = v4l2_subdev_init_finalize(subdev);
+ if (ret)
+ goto error_media_entity;
if (csi_dev->isp_available)
ret = v4l2_async_register_subdev(subdev);
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h
index 722b633b7893..a5b0a6f064dd 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h
@@ -42,8 +42,6 @@ struct sun6i_csi_bridge {
struct v4l2_subdev subdev;
struct v4l2_async_notifier notifier;
struct media_pad pads[2];
- struct v4l2_mbus_framefmt mbus_format;
- struct mutex lock; /* Mbus format lock. */
struct sun6i_csi_bridge_source source_parallel;
struct sun6i_csi_bridge_source source_mipi_csi2;
--
2.35.3
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