This is an automatic generated email to let you know that the following patch 
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Subject: media: v4l2-subdev: add subdev-wide state struct
Author:  Tomi Valkeinen <[email protected]>
Date:    Thu Jun 10 17:55:58 2021 +0300

We have 'struct v4l2_subdev_pad_config' which contains configuration for
a single pad used for the TRY functionality, and an array of those
structs is passed to various v4l2_subdev_pad_ops.

I was working on subdev internal routing between pads, and realized that
there's no way to add TRY functionality for routes, which is not pad
specific configuration. Adding a separate struct for try-route config
wouldn't work either, as e.g. set-fmt needs to know the try-route
configuration to propagate the settings.

This patch adds a new struct, 'struct v4l2_subdev_state' (which at the
moment only contains the v4l2_subdev_pad_config array) and the new
struct is used in most of the places where v4l2_subdev_pad_config was
used. All v4l2_subdev_pad_ops functions taking v4l2_subdev_pad_config
are changed to instead take v4l2_subdev_state.

The changes to drivers/media/v4l2-core/v4l2-subdev.c and
include/media/v4l2-subdev.h were written by hand, and all the driver
changes were done with the semantic patch below. The spatch needs to be
applied to a select list of directories. I used the following shell
commands to apply the spatch:

dirs="drivers/media/i2c drivers/media/platform drivers/media/usb 
drivers/media/test-drivers/vimc drivers/media/pci drivers/staging/media"
for dir in $dirs; do spatch -j8 --dir --include-headers --no-show-diff 
--in-place --sp-file v4l2-subdev-state.cocci $dir; done

Note that Coccinelle chokes on a few drivers (gcc extensions?). With
minor changes we can make Coccinelle run fine, and these changes can be
reverted after spatch. The diff for these changes is:

For drivers/media/i2c/s5k5baf.c:

        @@ -1481,7 +1481,7 @@ static int s5k5baf_set_selection(struct 
v4l2_subdev *sd,
                                        &s5k5baf_cis_rect,
                                        v4l2_subdev_get_try_crop(sd, cfg, 
PAD_CIS),
                                        v4l2_subdev_get_try_compose(sd, cfg, 
PAD_CIS),
        -                               v4l2_subdev_get_try_crop(sd, cfg, 
PAD_OUT)
        +                               v4l2_subdev_get_try_crop(sd, cfg, 
PAD_OUT),
                                };
                        s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
                        return 0;

For drivers/media/platform/s3c-camif/camif-capture.c:

        @@ -1230,7 +1230,7 @@ static int s3c_camif_subdev_get_fmt(struct 
v4l2_subdev *sd,
                        *mf = camif->mbus_fmt;
                        break;

        -       case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
        +       case CAMIF_SD_PAD_SOURCE_C:
                        /* crop rectangle at camera interface input */
                        mf->width = camif->camif_crop.width;
                        mf->height = camif->camif_crop.height;
        @@ -1332,7 +1332,7 @@ static int s3c_camif_subdev_set_fmt(struct 
v4l2_subdev *sd,
                        }
                        break;

        -       case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
        +       case CAMIF_SD_PAD_SOURCE_C:
                        /* Pixel format can be only changed on the sink pad. */
                        mf->code = camif->mbus_fmt.code;
                        mf->width = crop->width;

The semantic patch is:

// <smpl>

// Change function parameter

@@
identifier func;
identifier cfg;
@@

 func(...,
-   struct v4l2_subdev_pad_config *cfg
+   struct v4l2_subdev_state *sd_state
    , ...)
 {
 <...
- cfg
+ sd_state
 ...>
 }

// Change function declaration parameter

@@
identifier func;
identifier cfg;
type T;
@@
T func(...,
-   struct v4l2_subdev_pad_config *cfg
+   struct v4l2_subdev_state *sd_state
    , ...);

// Change function return value

@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
 *func(...)
 {
    ...
 }

// Change function declaration return value

@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
 *func(...);

// Some drivers pass a local pad_cfg for a single pad to a called function. 
Wrap it
// inside a pad_state.

@@
identifier func;
identifier pad_cfg;
@@
func(...)
{
    ...
    struct v4l2_subdev_pad_config pad_cfg;
+   struct v4l2_subdev_state pad_state = { .pads = &pad_cfg };

    <+...

(
    v4l2_subdev_call
|
    sensor_call
|
    isi_try_fse
|
    isc_try_fse
|
    saa_call_all
)
    (...,
-   &pad_cfg
+   &pad_state
    ,...)

    ...+>
}

// If the function uses fields from pad_config, access via state->pads

@@
identifier func;
identifier state;
@@
 func(...,
    struct v4l2_subdev_state *state
    , ...)
 {
    <...
(
-   state->try_fmt
+   state->pads->try_fmt
|
-   state->try_crop
+   state->pads->try_crop
|
-   state->try_compose
+   state->pads->try_compose
)
    ...>
}

// If the function accesses the filehandle, use fh->state instead

@@
struct v4l2_subdev_fh *fh;
@@
-    fh->pad
+    fh->state

@@
struct v4l2_subdev_fh fh;
@@
-    fh.pad
+    fh.state

// Start of vsp1 specific

@@
@@
struct vsp1_entity {
    ...
-    struct v4l2_subdev_pad_config *config;
+    struct v4l2_subdev_state *config;
    ...
};

@@
symbol entity;
@@
vsp1_entity_init(...)
{
    ...
    entity->config =
-    v4l2_subdev_alloc_pad_config
+    v4l2_subdev_alloc_state
    (&entity->subdev);
    ...
}

@@
symbol entity;
@@
vsp1_entity_destroy(...)
{
    ...
-   v4l2_subdev_free_pad_config
+   v4l2_subdev_free_state
    (entity->config);
    ...
}

@exists@
identifier func =~ 
"(^vsp1.*)|(hsit_set_format)|(sru_enum_frame_size)|(sru_set_format)|(uif_get_selection)|(uif_set_selection)|(uds_enum_frame_size)|(uds_set_format)|(brx_set_format)|(brx_get_selection)|(histo_get_selection)|(histo_set_selection)|(brx_set_selection)";
symbol config;
@@
func(...) {
    ...
-    struct v4l2_subdev_pad_config *config;
+    struct v4l2_subdev_state *config;
    ...
}

// End of vsp1 specific

// Start of rcar specific

@@
identifier sd;
identifier pad_cfg;
@@
 rvin_try_format(...)
 {
    ...
-   struct v4l2_subdev_pad_config *pad_cfg;
+   struct v4l2_subdev_state *sd_state;
    ...
-   pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+   sd_state = v4l2_subdev_alloc_state(sd);
    <...
-   pad_cfg
+   sd_state
    ...>
-   v4l2_subdev_free_pad_config(pad_cfg);
+   v4l2_subdev_free_state(sd_state);
    ...
 }

// End of rcar specific

// Start of rockchip specific

@@
identifier func =~ 
"(rkisp1_rsz_get_pad_fmt)|(rkisp1_rsz_get_pad_crop)|(rkisp1_rsz_register)";
symbol rsz;
symbol pad_cfg;
@@

 func(...)
 {
+   struct v4l2_subdev_state state = { .pads = rsz->pad_cfg };
    ...
-   rsz->pad_cfg
+   &state
    ...
 }

@@
identifier func =~ "(rkisp1_isp_get_pad_fmt)|(rkisp1_isp_get_pad_crop)";
symbol isp;
symbol pad_cfg;
@@

 func(...)
 {
+   struct v4l2_subdev_state state = { .pads = isp->pad_cfg };
    ...
-   isp->pad_cfg
+   &state
    ...
 }

@@
symbol rkisp1;
symbol isp;
symbol pad_cfg;
@@

 rkisp1_isp_register(...)
 {
+   struct v4l2_subdev_state state = { .pads = rkisp1->isp.pad_cfg };
    ...
-   rkisp1->isp.pad_cfg
+   &state
    ...
 }

// End of rockchip specific

// Start of tegra-video specific

@@
identifier sd;
identifier pad_cfg;
@@
 __tegra_channel_try_format(...)
 {
    ...
-   struct v4l2_subdev_pad_config *pad_cfg;
+   struct v4l2_subdev_state *sd_state;
    ...
-   pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+   sd_state = v4l2_subdev_alloc_state(sd);
    <...
-   pad_cfg
+   sd_state
    ...>
-   v4l2_subdev_free_pad_config(pad_cfg);
+   v4l2_subdev_free_state(sd_state);
    ...
 }

@@
identifier sd_state;
@@
 __tegra_channel_try_format(...)
 {
    ...
    struct v4l2_subdev_state *sd_state;
    <...
-   sd_state->try_crop
+   sd_state->pads->try_crop
    ...>
 }

// End of tegra-video specific

// </smpl>

Signed-off-by: Tomi Valkeinen <[email protected]>
Acked-by: Laurent Pinchart <[email protected]>
Acked-by: Sakari Ailus <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/i2c/adv7170.c                        |   6 +-
 drivers/media/i2c/adv7175.c                        |   6 +-
 drivers/media/i2c/adv7180.c                        |  18 +--
 drivers/media/i2c/adv7183.c                        |   8 +-
 drivers/media/i2c/adv748x/adv748x-afe.c            |  13 +-
 drivers/media/i2c/adv748x/adv748x-csi2.c           |  14 +-
 drivers/media/i2c/adv748x/adv748x-hdmi.c           |  13 +-
 drivers/media/i2c/adv7511-v4l2.c                   |  10 +-
 drivers/media/i2c/adv7604.c                        |  12 +-
 drivers/media/i2c/adv7842.c                        |  12 +-
 drivers/media/i2c/ak881x.c                         |   6 +-
 drivers/media/i2c/ccs/ccs-core.c                   |  84 ++++++------
 drivers/media/i2c/cx25840/cx25840-core.c           |   2 +-
 drivers/media/i2c/et8ek8/et8ek8_driver.c           |  23 ++--
 drivers/media/i2c/hi556.c                          |  15 ++-
 drivers/media/i2c/imx208.c                         |  19 +--
 drivers/media/i2c/imx214.c                         |  37 +++---
 drivers/media/i2c/imx219.c                         |  30 +++--
 drivers/media/i2c/imx258.c                         |  19 +--
 drivers/media/i2c/imx274.c                         |  38 +++---
 drivers/media/i2c/imx290.c                         |  20 +--
 drivers/media/i2c/imx319.c                         |  18 +--
 drivers/media/i2c/imx334.c                         |  28 ++--
 drivers/media/i2c/imx355.c                         |  18 +--
 drivers/media/i2c/m5mols/m5mols_core.c             |  21 +--
 drivers/media/i2c/max9286.c                        |  17 +--
 drivers/media/i2c/ml86v7667.c                      |   4 +-
 drivers/media/i2c/mt9m001.c                        |  18 +--
 drivers/media/i2c/mt9m032.c                        |  38 +++---
 drivers/media/i2c/mt9m111.c                        |  18 +--
 drivers/media/i2c/mt9p031.c                        |  45 ++++---
 drivers/media/i2c/mt9t001.c                        |  44 ++++---
 drivers/media/i2c/mt9t112.c                        |  14 +-
 drivers/media/i2c/mt9v011.c                        |   6 +-
 drivers/media/i2c/mt9v032.c                        |  44 ++++---
 drivers/media/i2c/mt9v111.c                        |  25 ++--
 drivers/media/i2c/noon010pc30.c                    |  19 +--
 drivers/media/i2c/ov02a10.c                        |  17 +--
 drivers/media/i2c/ov13858.c                        |  18 +--
 drivers/media/i2c/ov2640.c                         |  16 +--
 drivers/media/i2c/ov2659.c                         |  14 +-
 drivers/media/i2c/ov2680.c                         |  23 ++--
 drivers/media/i2c/ov2685.c                         |  10 +-
 drivers/media/i2c/ov2740.c                         |  15 ++-
 drivers/media/i2c/ov5640.c                         |  14 +-
 drivers/media/i2c/ov5645.c                         |  38 +++---
 drivers/media/i2c/ov5647.c                         |  26 ++--
 drivers/media/i2c/ov5648.c                         |  14 +-
 drivers/media/i2c/ov5670.c                         |  19 +--
 drivers/media/i2c/ov5675.c                         |  15 ++-
 drivers/media/i2c/ov5695.c                         |  15 ++-
 drivers/media/i2c/ov6650.c                         |  28 ++--
 drivers/media/i2c/ov7251.c                         |  39 +++---
 drivers/media/i2c/ov7670.c                         |  17 +--
 drivers/media/i2c/ov772x.c                         |  12 +-
 drivers/media/i2c/ov7740.c                         |  17 +--
 drivers/media/i2c/ov8856.c                         |  15 ++-
 drivers/media/i2c/ov8865.c                         |  14 +-
 drivers/media/i2c/ov9640.c                         |   8 +-
 drivers/media/i2c/ov9650.c                         |  17 +--
 drivers/media/i2c/ov9734.c                         |  15 ++-
 drivers/media/i2c/rdacm20.c                        |   4 +-
 drivers/media/i2c/rdacm21.c                        |   4 +-
 drivers/media/i2c/rj54n1cb0c.c                     |  12 +-
 drivers/media/i2c/s5c73m3/s5c73m3-core.c           |  55 ++++----
 drivers/media/i2c/s5k4ecgx.c                       |  22 ++--
 drivers/media/i2c/s5k5baf.c                        |  49 ++++---
 drivers/media/i2c/s5k6a3.c                         |  19 +--
 drivers/media/i2c/s5k6aa.c                         |  39 +++---
 drivers/media/i2c/saa6752hs.c                      |   6 +-
 drivers/media/i2c/saa7115.c                        |   2 +-
 drivers/media/i2c/saa717x.c                        |   2 +-
 drivers/media/i2c/sr030pc30.c                      |   8 +-
 drivers/media/i2c/st-mipid02.c                     |  21 +--
 drivers/media/i2c/tc358743.c                       |   8 +-
 drivers/media/i2c/tda1997x.c                       |  14 +-
 drivers/media/i2c/tvp514x.c                        |  12 +-
 drivers/media/i2c/tvp5150.c                        |  20 +--
 drivers/media/i2c/tvp7002.c                        |  11 +-
 drivers/media/i2c/tw9910.c                         |  10 +-
 drivers/media/i2c/vs6624.c                         |   8 +-
 drivers/media/pci/cx18/cx18-av-core.c              |   2 +-
 drivers/media/pci/intel/ipu3/ipu3-cio2-main.c      |  17 +--
 drivers/media/pci/saa7134/saa7134-empress.c        |   5 +-
 drivers/media/platform/atmel/atmel-isc-base.c      |  19 +--
 drivers/media/platform/atmel/atmel-isi.c           |  19 +--
 drivers/media/platform/cadence/cdns-csi2tx.c       |  14 +-
 drivers/media/platform/exynos4-is/fimc-capture.c   |  22 ++--
 drivers/media/platform/exynos4-is/fimc-isp.c       |  37 +++---
 drivers/media/platform/exynos4-is/fimc-lite.c      |  39 +++---
 drivers/media/platform/exynos4-is/mipi-csis.c      |  17 ++-
 drivers/media/platform/marvell-ccic/mcam-core.c    |   5 +-
 drivers/media/platform/omap3isp/ispccdc.c          |  85 +++++++-----
 drivers/media/platform/omap3isp/ispccp2.c          |  49 ++++---
 drivers/media/platform/omap3isp/ispcsi2.c          |  41 +++---
 drivers/media/platform/omap3isp/isppreview.c       |  69 +++++-----
 drivers/media/platform/omap3isp/ispresizer.c       |  70 +++++-----
 drivers/media/platform/pxa_camera.c                |   5 +-
 drivers/media/platform/qcom/camss/camss-csid.c     |  35 ++---
 drivers/media/platform/qcom/camss/camss-csiphy.c   |  40 +++---
 drivers/media/platform/qcom/camss/camss-ispif.c    |  36 +++---
 drivers/media/platform/qcom/camss/camss-vfe.c      |  84 ++++++------
 drivers/media/platform/rcar-vin/rcar-csi2.c        |   8 +-
 drivers/media/platform/rcar-vin/rcar-v4l2.c        |  10 +-
 drivers/media/platform/renesas-ceu.c               |   7 +-
 .../media/platform/rockchip/rkisp1/rkisp1-isp.c    | 112 +++++++++-------
 .../platform/rockchip/rkisp1/rkisp1-resizer.c      |  95 +++++++++-----
 drivers/media/platform/s3c-camif/camif-capture.c   |  18 +--
 drivers/media/platform/stm32/stm32-dcmi.c          |  14 +-
 .../media/platform/sunxi/sun4i-csi/sun4i_v4l2.c    |  16 ++-
 drivers/media/platform/ti-vpe/cal-camerarx.c       |  35 ++---
 drivers/media/platform/via-camera.c                |   5 +-
 drivers/media/platform/video-mux.c                 |  22 ++--
 drivers/media/platform/vsp1/vsp1_brx.c             |  34 ++---
 drivers/media/platform/vsp1/vsp1_clu.c             |  13 +-
 drivers/media/platform/vsp1/vsp1_entity.c          |  59 +++++----
 drivers/media/platform/vsp1/vsp1_entity.h          |  20 +--
 drivers/media/platform/vsp1/vsp1_histo.c           |  51 ++++----
 drivers/media/platform/vsp1/vsp1_hsit.c            |  14 +-
 drivers/media/platform/vsp1/vsp1_lif.c             |  13 +-
 drivers/media/platform/vsp1/vsp1_lut.c             |  13 +-
 drivers/media/platform/vsp1/vsp1_rwpf.c            |  32 +++--
 drivers/media/platform/vsp1/vsp1_rwpf.h            |   2 +-
 drivers/media/platform/vsp1/vsp1_sru.c             |  22 ++--
 drivers/media/platform/vsp1/vsp1_uds.c             |  22 ++--
 drivers/media/platform/vsp1/vsp1_uif.c             |  27 ++--
 drivers/media/platform/xilinx/xilinx-csi2rxss.c    |  26 ++--
 drivers/media/platform/xilinx/xilinx-tpg.c         |  25 ++--
 drivers/media/platform/xilinx/xilinx-vip.c         |  12 +-
 drivers/media/platform/xilinx/xilinx-vip.h         |   4 +-
 drivers/media/test-drivers/vimc/vimc-debayer.c     |  20 +--
 drivers/media/test-drivers/vimc/vimc-scaler.c      |  36 +++---
 drivers/media/test-drivers/vimc/vimc-sensor.c      |  16 +--
 drivers/media/usb/go7007/s2250-board.c             |   2 +-
 drivers/media/v4l2-core/v4l2-subdev.c              | 142 ++++++++++++---------
 drivers/staging/media/atomisp/i2c/atomisp-gc0310.c |  10 +-
 drivers/staging/media/atomisp/i2c/atomisp-gc2235.c |  10 +-
 .../staging/media/atomisp/i2c/atomisp-mt9m114.c    |  12 +-
 drivers/staging/media/atomisp/i2c/atomisp-ov2680.c |  10 +-
 drivers/staging/media/atomisp/i2c/atomisp-ov2722.c |  10 +-
 .../media/atomisp/i2c/ov5693/atomisp-ov5693.c      |  10 +-
 drivers/staging/media/atomisp/pci/atomisp_cmd.c    |  33 +++--
 drivers/staging/media/atomisp/pci/atomisp_csi2.c   |  28 ++--
 drivers/staging/media/atomisp/pci/atomisp_csi2.h   |   2 +-
 drivers/staging/media/atomisp/pci/atomisp_file.c   |  14 +-
 drivers/staging/media/atomisp/pci/atomisp_fops.c   |   6 +-
 drivers/staging/media/atomisp/pci/atomisp_subdev.c |  64 +++++-----
 drivers/staging/media/atomisp/pci/atomisp_subdev.h |   9 +-
 drivers/staging/media/atomisp/pci/atomisp_tpg.c    |  12 +-
 drivers/staging/media/imx/imx-ic-prp.c             |  19 +--
 drivers/staging/media/imx/imx-ic-prpencvf.c        |  31 ++---
 drivers/staging/media/imx/imx-media-csi.c          |  82 ++++++------
 drivers/staging/media/imx/imx-media-utils.c        |   4 +-
 drivers/staging/media/imx/imx-media-vdic.c         |  24 ++--
 drivers/staging/media/imx/imx-media.h              |   2 +-
 drivers/staging/media/imx/imx6-mipi-csi2.c         |  12 +-
 drivers/staging/media/imx/imx7-media-csi.c         |  33 ++---
 drivers/staging/media/imx/imx7-mipi-csis.c         |  34 ++---
 drivers/staging/media/ipu3/ipu3-v4l2.c             |  26 ++--
 drivers/staging/media/omap4iss/iss_csi2.c          |  37 +++---
 drivers/staging/media/omap4iss/iss_ipipe.c         |  37 +++---
 drivers/staging/media/omap4iss/iss_ipipeif.c       |  47 ++++---
 drivers/staging/media/omap4iss/iss_resizer.c       |  39 +++---
 drivers/staging/media/tegra-video/csi.c            |  10 +-
 drivers/staging/media/tegra-video/vi.c             |  24 ++--
 include/media/v4l2-subdev.h                        |  74 ++++++-----
 166 files changed, 2163 insertions(+), 1803 deletions(-)

---

<diff discarded since it is too big>

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