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 <sk...@linuxfoundation.org>
---
  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

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