From 0d346d2a6f54f06f36b224fd27cd6eafe8c83be9 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 10 Jun 2021 17:55:58 +0300 Subject: media: v4l2-subdev: add subdev-wide state struct 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: // // 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 // Signed-off-by: Tomi Valkeinen Acked-by: Laurent Pinchart Acked-by: Sakari Ailus Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/qcom/camss/camss-csid.c | 35 +++++++++++++------------- 1 file changed, 18 insertions(+), 17 deletions(-) (limited to 'drivers/media/platform/qcom/camss/camss-csid.c') diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c index 251f4c4afe19..a1637b78568b 100644 --- a/drivers/media/platform/qcom/camss/camss-csid.c +++ b/drivers/media/platform/qcom/camss/camss-csid.c @@ -245,12 +245,13 @@ static int csid_set_stream(struct v4l2_subdev *sd, int enable) */ static struct v4l2_mbus_framefmt * __csid_get_format(struct csid_device *csid, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, unsigned int pad, enum v4l2_subdev_format_whence which) { if (which == V4L2_SUBDEV_FORMAT_TRY) - return v4l2_subdev_get_try_format(&csid->subdev, cfg, pad); + return v4l2_subdev_get_try_format(&csid->subdev, sd_state, + pad); return &csid->fmt[pad]; } @@ -264,7 +265,7 @@ __csid_get_format(struct csid_device *csid, * @which: wanted subdev format */ static void csid_try_format(struct csid_device *csid, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, unsigned int pad, struct v4l2_mbus_framefmt *fmt, enum v4l2_subdev_format_whence which) @@ -297,7 +298,7 @@ static void csid_try_format(struct csid_device *csid, /* keep pad formats in sync */ u32 code = fmt->code; - *fmt = *__csid_get_format(csid, cfg, + *fmt = *__csid_get_format(csid, sd_state, MSM_CSID_PAD_SINK, which); fmt->code = csid->ops->src_pad_code(csid, fmt->code, 0, code); } else { @@ -331,7 +332,7 @@ static void csid_try_format(struct csid_device *csid, * return -EINVAL or zero on success */ static int csid_enum_mbus_code(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { struct csid_device *csid = v4l2_get_subdevdata(sd); @@ -345,7 +346,7 @@ static int csid_enum_mbus_code(struct v4l2_subdev *sd, if (csid->testgen_mode->cur.val == 0) { struct v4l2_mbus_framefmt *sink_fmt; - sink_fmt = __csid_get_format(csid, cfg, + sink_fmt = __csid_get_format(csid, sd_state, MSM_CSID_PAD_SINK, code->which); @@ -372,7 +373,7 @@ static int csid_enum_mbus_code(struct v4l2_subdev *sd, * return -EINVAL or zero on success */ static int csid_enum_frame_size(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { struct csid_device *csid = v4l2_get_subdevdata(sd); @@ -384,7 +385,7 @@ static int csid_enum_frame_size(struct v4l2_subdev *sd, format.code = fse->code; format.width = 1; format.height = 1; - csid_try_format(csid, cfg, fse->pad, &format, fse->which); + csid_try_format(csid, sd_state, fse->pad, &format, fse->which); fse->min_width = format.width; fse->min_height = format.height; @@ -394,7 +395,7 @@ static int csid_enum_frame_size(struct v4l2_subdev *sd, format.code = fse->code; format.width = -1; format.height = -1; - csid_try_format(csid, cfg, fse->pad, &format, fse->which); + csid_try_format(csid, sd_state, fse->pad, &format, fse->which); fse->max_width = format.width; fse->max_height = format.height; @@ -410,13 +411,13 @@ static int csid_enum_frame_size(struct v4l2_subdev *sd, * Return -EINVAL or zero on success */ static int csid_get_format(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct csid_device *csid = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; - format = __csid_get_format(csid, cfg, fmt->pad, fmt->which); + format = __csid_get_format(csid, sd_state, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; @@ -434,26 +435,26 @@ static int csid_get_format(struct v4l2_subdev *sd, * Return -EINVAL or zero on success */ static int csid_set_format(struct v4l2_subdev *sd, - struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { struct csid_device *csid = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; - format = __csid_get_format(csid, cfg, fmt->pad, fmt->which); + format = __csid_get_format(csid, sd_state, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; - csid_try_format(csid, cfg, fmt->pad, &fmt->format, fmt->which); + csid_try_format(csid, sd_state, fmt->pad, &fmt->format, fmt->which); *format = fmt->format; /* Propagate the format from sink to source */ if (fmt->pad == MSM_CSID_PAD_SINK) { - format = __csid_get_format(csid, cfg, MSM_CSID_PAD_SRC, + format = __csid_get_format(csid, sd_state, MSM_CSID_PAD_SRC, fmt->which); *format = fmt->format; - csid_try_format(csid, cfg, MSM_CSID_PAD_SRC, format, + csid_try_format(csid, sd_state, MSM_CSID_PAD_SRC, format, fmt->which); } @@ -482,7 +483,7 @@ static int csid_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) } }; - return csid_set_format(sd, fh ? fh->pad : NULL, &format); + return csid_set_format(sd, fh ? fh->state : NULL, &format); } /* -- cgit v1.2.3