Re: [PATCH 1/3] media: vimc: move private defines to a common header
From: Shuah Khan
Date: Mon Aug 12 2019 - 10:03:59 EST
Hi Helen,
On 8/9/19 9:15 PM, Helen Koike wrote:
Hi Shuah,
Thanks for the patch.
On 8/9/19 6:45 PM, Shuah Khan wrote:
In preparation for collapsing the component driver structure into
a monolith, move private device structure defines to a new common
header file.
Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/platform/vimc/vimc-capture.c | 21 +----
drivers/media/platform/vimc/vimc-core.c | 18 +---
drivers/media/platform/vimc/vimc-debayer.c | 16 +---
drivers/media/platform/vimc/vimc-scaler.c | 15 +--
drivers/media/platform/vimc/vimc-sensor.c | 13 +--
drivers/media/platform/vimc/vimc.h | 102 +++++++++++++++++++++
6 files changed, 107 insertions(+), 78 deletions(-)
create mode 100644 drivers/media/platform/vimc/vimc.h
diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
index 664855708fdf..c52fc5d97c2d 100644
--- a/drivers/media/platform/vimc/vimc-capture.c
+++ b/drivers/media/platform/vimc/vimc-capture.c
@@ -13,6 +13,7 @@
#include <media/videobuf2-core.h>
#include <media/videobuf2-vmalloc.h>
+#include "vimc.h"
#include "vimc-common.h"
#include "vimc-streamer.h"
@@ -44,26 +45,6 @@ static const u32 vimc_cap_supported_pixfmt[] = {
V4L2_PIX_FMT_SRGGB12,
};
-struct vimc_cap_device {
- struct vimc_ent_device ved;
- struct video_device vdev;
- struct device *dev;
- struct v4l2_pix_format format;
- struct vb2_queue queue;
- struct list_head buf_list;
- /*
- * NOTE: in a real driver, a spin lock must be used to access the
- * queue because the frames are generated from a hardware interruption
- * and the isr is not allowed to sleep.
- * Even if it is not necessary a spinlock in the vimc driver, we
- * use it here as a code reference
- */
- spinlock_t qlock;
- struct mutex lock;
- u32 sequence;
- struct vimc_stream stream;
-};
-
static const struct v4l2_pix_format fmt_default = {
.width = 640,
.height = 480,
diff --git a/drivers/media/platform/vimc/vimc-core.c b/drivers/media/platform/vimc/vimc-core.c
index 571c55aa0e16..c9b351472272 100644
--- a/drivers/media/platform/vimc/vimc-core.c
+++ b/drivers/media/platform/vimc/vimc-core.c
@@ -12,6 +12,7 @@
#include <media/media-device.h>
#include <media/v4l2-device.h>
+#include "vimc.h"
#include "vimc-common.h"
#define VIMC_MDEV_MODEL_NAME "VIMC MDEV"
@@ -24,23 +25,6 @@
.flags = link_flags, \
}
-struct vimc_device {
- /* The platform device */
- struct platform_device pdev;
-
- /* The pipeline configuration */
- const struct vimc_pipeline_config *pipe_cfg;
-
- /* The Associated media_device parent */
- struct media_device mdev;
-
- /* Internal v4l2 parent device*/
- struct v4l2_device v4l2_dev;
-
- /* Subdevices */
- struct platform_device **subdevs;
-};
-
/* Structure which describes individual configuration for each entity */
struct vimc_ent_config {
const char *name;
diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
index 00598fbf3cba..750752bb173c 100644
--- a/drivers/media/platform/vimc/vimc-debayer.c
+++ b/drivers/media/platform/vimc/vimc-debayer.c
@@ -13,6 +13,7 @@
#include <linux/v4l2-mediabus.h>
#include <media/v4l2-subdev.h>
+#include "vimc.h"
#include "vimc-common.h"
#define VIMC_DEB_DRV_NAME "vimc-debayer"
@@ -44,21 +45,6 @@ struct vimc_deb_pix_map {
enum vimc_deb_rgb_colors order[2][2];
};
-struct vimc_deb_device {
- struct vimc_ent_device ved;
- struct v4l2_subdev sd;
- struct device *dev;
- /* The active format */
- struct v4l2_mbus_framefmt sink_fmt;
- u32 src_code;
- void (*set_rgb_src)(struct vimc_deb_device *vdeb, unsigned int lin,
- unsigned int col, unsigned int rgb[3]);
- /* Values calculated when the stream starts */
- u8 *src_frame;
- const struct vimc_deb_pix_map *sink_pix_map;
- unsigned int sink_bpp;
-};
-
static const struct v4l2_mbus_framefmt sink_fmt_default = {
.width = 640,
.height = 480,
diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
index c7123a45c55b..fe99b9102ada 100644
--- a/drivers/media/platform/vimc/vimc-scaler.c
+++ b/drivers/media/platform/vimc/vimc-scaler.c
@@ -13,6 +13,7 @@
#include <linux/v4l2-mediabus.h>
#include <media/v4l2-subdev.h>
+#include "vimc.h"
#include "vimc-common.h"
#define VIMC_SCA_DRV_NAME "vimc-scaler"
@@ -31,20 +32,6 @@ static const u32 vimc_sca_supported_pixfmt[] = {
V4L2_PIX_FMT_ARGB32,
};
-struct vimc_sca_device {
- struct vimc_ent_device ved;
- struct v4l2_subdev sd;
- struct device *dev;
- /* NOTE: the source fmt is the same as the sink
- * with the width and hight multiplied by mult
- */
- struct v4l2_mbus_framefmt sink_fmt;
- /* Values calculated when the stream starts */
- u8 *src_frame;
- unsigned int src_line_size;
- unsigned int bpp;
-};
-
static const struct v4l2_mbus_framefmt sink_fmt_default = {
.width = 640,
.height = 480,
diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
index 51359472eef2..6c57b1e262f9 100644
--- a/drivers/media/platform/vimc/vimc-sensor.c
+++ b/drivers/media/platform/vimc/vimc-sensor.c
@@ -16,22 +16,11 @@
#include <media/v4l2-subdev.h>
#include <media/tpg/v4l2-tpg.h>
+#include "vimc.h"
#include "vimc-common.h"
#define VIMC_SEN_DRV_NAME "vimc-sensor"
-struct vimc_sen_device {
- struct vimc_ent_device ved;
- struct v4l2_subdev sd;
- struct device *dev;
- struct tpg_data tpg;
- struct task_struct *kthread_sen;
- u8 *frame;
- /* The active format */
- struct v4l2_mbus_framefmt mbus_format;
- struct v4l2_ctrl_handler hdl;
-};
-
static const struct v4l2_mbus_framefmt fmt_default = {
.width = 640,
.height = 480,
diff --git a/drivers/media/platform/vimc/vimc.h b/drivers/media/platform/vimc/vimc.h
new file mode 100644
index 000000000000..a5adebdda941
--- /dev/null
+++ b/drivers/media/platform/vimc/vimc.h
I was wondering if instead of creating a vimc.h, if we could move
to vimc-common.h,just because it is not clear to me the difference
between the two now, what do you think?
My thinking is that vimc-common.h is common for all the subdevs and
putting vimc-core defines and structures it shares it with the subdev
files can be in a separate file.
It is more of design choice to keep structures and defined organized.
Originally I was thinking all the subdev device structires need to be
global, and my patch set I sent out as such doesn't need that. I just
overlooked that when I sent the patches out.
This reduces the number of things that need to be common, I don't really
have any strong reasons for either choice of adding common defines to
vimc-common.h vs vimc.h - maybe with a slight tilt towards liking vimc.h
thanks,
-- Shuah