From: Sakari Ailus Date: Wed, 6 Sep 2023 08:04:31 +0000 (+0300) Subject: media: ccs: Rely on sub-device state locking X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a88883d1209c3c759ebaa7886d9a7098d5ed1132;p=thirdparty%2Fkernel%2Flinux.git media: ccs: Rely on sub-device state locking Rely on sub-device state locking to serialise access to driver's data structures. The driver-provided mutex is used as the state lock for all driver sub-devices. Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index 5d931e1fb46d2..a08f061490973 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -541,12 +541,13 @@ static int ccs_pll_update(struct ccs_sensor *sensor) * */ -static void __ccs_update_exposure_limits(struct ccs_sensor *sensor) +static void __ccs_update_exposure_limits(struct ccs_sensor *sensor, + const struct v4l2_rect *pa_src) { struct v4l2_ctrl *ctrl = sensor->exposure; int max; - max = sensor->pa_src.height + sensor->vblank->val - + max = pa_src->height + sensor->vblank->val - CCS_LIM(sensor, COARSE_INTEGRATION_TIME_MAX_MARGIN); __v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max, ctrl->step, max); @@ -649,12 +650,20 @@ static int ccs_set_ctrl(struct v4l2_ctrl *ctrl) container_of(ctrl->handler, struct ccs_subdev, ctrl_handler) ->sensor; struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + struct v4l2_subdev_state *state; + const struct v4l2_rect *pa_src = NULL; int pm_status; u32 orient = 0; unsigned int i; int exposure; int rval; + if (ctrl->id == V4L2_CID_VBLANK || ctrl->id == V4L2_CID_HBLANK) { + state = v4l2_subdev_get_locked_active_state(&sensor->pixel_array->sd); + pa_src = v4l2_subdev_state_get_crop(state, CCS_PA_PAD_SRC, + CCS_STREAM_PIXEL); + } + switch (ctrl->id) { case V4L2_CID_HFLIP: case V4L2_CID_VFLIP: @@ -673,7 +682,7 @@ static int ccs_set_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_VBLANK: exposure = sensor->exposure->val; - __ccs_update_exposure_limits(sensor); + __ccs_update_exposure_limits(sensor, pa_src); if (exposure > sensor->exposure->maximum) { sensor->exposure->val = sensor->exposure->maximum; @@ -765,12 +774,12 @@ static int ccs_set_ctrl(struct v4l2_ctrl *ctrl) break; case V4L2_CID_VBLANK: rval = ccs_write(sensor, FRAME_LENGTH_LINES, - sensor->pa_src.height + ctrl->val); + pa_src->height + ctrl->val); break; case V4L2_CID_HBLANK: rval = ccs_write(sensor, LINE_LENGTH_PCK, - sensor->pa_src.width + ctrl->val); + pa_src->width + ctrl->val); break; case V4L2_CID_TEST_PATTERN: @@ -1223,7 +1232,8 @@ static int ccs_get_mbus_formats(struct ccs_sensor *sensor) return 0; } -static void ccs_update_blanking(struct ccs_sensor *sensor) +static void ccs_update_blanking(struct ccs_sensor *sensor, + const struct v4l2_rect *pa_src) { struct v4l2_ctrl *vblank = sensor->vblank; struct v4l2_ctrl *hblank = sensor->hblank; @@ -1246,21 +1256,26 @@ static void ccs_update_blanking(struct ccs_sensor *sensor) min = max_t(int, CCS_LIM(sensor, MIN_FRAME_BLANKING_LINES), - min_fll - sensor->pa_src.height); - max = max_fll - sensor->pa_src.height; + min_fll - pa_src->height); + max = max_fll - pa_src->height; __v4l2_ctrl_modify_range(vblank, min, max, vblank->step, min); - min = max_t(int, min_llp - sensor->pa_src.width, min_lbp); - max = max_llp - sensor->pa_src.width; + min = max_t(int, min_llp - pa_src->width, min_lbp); + max = max_llp - pa_src->width; __v4l2_ctrl_modify_range(hblank, min, max, hblank->step, min); - __ccs_update_exposure_limits(sensor); + __ccs_update_exposure_limits(sensor, pa_src); } static int ccs_pll_blanking_update(struct ccs_sensor *sensor) { + struct v4l2_subdev_state *state = + v4l2_subdev_get_locked_active_state(&sensor->pixel_array->sd); + const struct v4l2_rect *pa_src = + v4l2_subdev_state_get_crop(state, CCS_PA_PAD_SRC, + CCS_STREAM_PIXEL); struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); int rval; @@ -1269,15 +1284,15 @@ static int ccs_pll_blanking_update(struct ccs_sensor *sensor) return rval; /* Output from pixel array, including blanking */ - ccs_update_blanking(sensor); + ccs_update_blanking(sensor, pa_src); dev_dbg(&client->dev, "vblank\t\t%d\n", sensor->vblank->val); dev_dbg(&client->dev, "hblank\t\t%d\n", sensor->hblank->val); dev_dbg(&client->dev, "real timeperframe\t100/%d\n", sensor->pll.pixel_rate_pixel_array / - ((sensor->pa_src.width + sensor->hblank->val) * - (sensor->pa_src.height + sensor->vblank->val) / 100)); + ((pa_src->width + sensor->hblank->val) * + (pa_src->height + sensor->vblank->val) / 100)); return 0; } @@ -1782,6 +1797,16 @@ static int ccs_enable_streams(struct v4l2_subdev *subdev, u64 streams_mask) { struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct v4l2_subdev_state *pa_state = + v4l2_subdev_get_locked_active_state(&sensor->pixel_array->sd); + struct v4l2_subdev_state *src_state = + v4l2_subdev_get_locked_active_state(&sensor->src->sd); + const struct v4l2_rect *pa_src = + v4l2_subdev_state_get_crop(pa_state, CCS_PA_PAD_SRC, + CCS_STREAM_PIXEL); + const struct v4l2_rect *src_src = + v4l2_subdev_state_get_crop(src_state, CCS_PAD_SRC, + CCS_STREAM_PIXEL); struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); unsigned int binning_mode; int rval; @@ -1829,22 +1854,20 @@ static int ccs_enable_streams(struct v4l2_subdev *subdev, goto err_pm_put; /* Analog crop start coordinates */ - rval = ccs_write(sensor, X_ADDR_START, sensor->pa_src.left); + rval = ccs_write(sensor, X_ADDR_START, pa_src->left); if (rval < 0) goto err_pm_put; - rval = ccs_write(sensor, Y_ADDR_START, sensor->pa_src.top); + rval = ccs_write(sensor, Y_ADDR_START, pa_src->top); if (rval < 0) goto err_pm_put; /* Analog crop end coordinates */ - rval = ccs_write(sensor, X_ADDR_END, - sensor->pa_src.left + sensor->pa_src.width - 1); + rval = ccs_write(sensor, X_ADDR_END, pa_src->left + pa_src->width - 1); if (rval < 0) goto err_pm_put; - rval = ccs_write(sensor, Y_ADDR_END, - sensor->pa_src.top + sensor->pa_src.height - 1); + rval = ccs_write(sensor, Y_ADDR_END, pa_src->top + pa_src->height - 1); if (rval < 0) goto err_pm_put; @@ -1856,23 +1879,30 @@ static int ccs_enable_streams(struct v4l2_subdev *subdev, /* Digital crop */ if (CCS_LIM(sensor, DIGITAL_CROP_CAPABILITY) == CCS_DIGITAL_CROP_CAPABILITY_INPUT_CROP) { + struct v4l2_subdev_state *scaler_state = + v4l2_subdev_get_locked_active_state(&sensor->scaler->sd); + const struct v4l2_rect *scaler_sink = + v4l2_subdev_state_get_crop(scaler_state, + sensor->scaler->sink_pad, + CCS_STREAM_PIXEL); + rval = ccs_write(sensor, DIGITAL_CROP_X_OFFSET, - sensor->scaler_sink.left); + scaler_sink->left); if (rval < 0) goto err_pm_put; rval = ccs_write(sensor, DIGITAL_CROP_Y_OFFSET, - sensor->scaler_sink.top); + scaler_sink->top); if (rval < 0) goto err_pm_put; rval = ccs_write(sensor, DIGITAL_CROP_IMAGE_WIDTH, - sensor->scaler_sink.width); + scaler_sink->width); if (rval < 0) goto err_pm_put; rval = ccs_write(sensor, DIGITAL_CROP_IMAGE_HEIGHT, - sensor->scaler_sink.height); + scaler_sink->height); if (rval < 0) goto err_pm_put; } @@ -1890,10 +1920,10 @@ static int ccs_enable_streams(struct v4l2_subdev *subdev, } /* Output size from sensor */ - rval = ccs_write(sensor, X_OUTPUT_SIZE, sensor->src_src.width); + rval = ccs_write(sensor, X_OUTPUT_SIZE, src_src->width); if (rval < 0) goto err_pm_put; - rval = ccs_write(sensor, Y_OUTPUT_SIZE, sensor->src_src.height); + rval = ccs_write(sensor, Y_OUTPUT_SIZE, src_src->height); if (rval < 0) goto err_pm_put; @@ -2022,20 +2052,17 @@ static int ccs_enum_mbus_code(struct v4l2_subdev *subdev, struct ccs_sensor *sensor = to_ccs_sensor(subdev); unsigned int i; int idx = -1; - int rval = -EINVAL; - - mutex_lock(&sensor->mutex); dev_err(&client->dev, "subdev %s, pad %u, index %u\n", subdev->name, code->pad, code->index); if (subdev != &sensor->src->sd || code->pad != CCS_PAD_SRC) { if (code->index) - goto out; + return -EINVAL; code->code = sensor->internal_csi_format->code; - rval = 0; - goto out; + + return 0; } for (i = 0; i < ARRAY_SIZE(ccs_csi_data_formats); i++) { @@ -2046,18 +2073,14 @@ static int ccs_enum_mbus_code(struct v4l2_subdev *subdev, code->code = ccs_csi_data_formats[i].code; dev_err(&client->dev, "found index %u, i %u, code %x\n", code->index, i, code->code); - rval = 0; - break; + return 0; } } -out: - mutex_unlock(&sensor->mutex); - - return rval; + return -EINVAL; } -static u32 __ccs_get_mbus_code(struct v4l2_subdev *subdev, unsigned int pad) +static u32 ccs_get_mbus_code(struct v4l2_subdev *subdev, unsigned int pad) { struct ccs_sensor *sensor = to_ccs_sensor(subdev); @@ -2067,28 +2090,14 @@ static u32 __ccs_get_mbus_code(struct v4l2_subdev *subdev, unsigned int pad) return sensor->internal_csi_format->code; } -static int __ccs_get_format(struct v4l2_subdev *subdev, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_format *fmt) -{ - fmt->format = *v4l2_subdev_state_get_format(sd_state, fmt->pad); - fmt->format.code = __ccs_get_mbus_code(subdev, fmt->pad); - - return 0; -} - static int ccs_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { - struct ccs_sensor *sensor = to_ccs_sensor(subdev); - int rval; - - mutex_lock(&sensor->mutex); - rval = __ccs_get_format(subdev, sd_state, fmt); - mutex_unlock(&sensor->mutex); + fmt->format = *v4l2_subdev_state_get_format(sd_state, fmt->pad); + fmt->format.code = ccs_get_mbus_code(subdev, fmt->pad); - return rval; + return 0; } /* Changes require propagation only on sink pad. */ @@ -2114,7 +2123,6 @@ static void ccs_propagate(struct v4l2_subdev *subdev, sensor->scale_m = CCS_LIM(sensor, SCALER_N_MIN); sensor->scaling_mode = CCS_SCALING_MODE_NO_SCALING; - sensor->scaler_sink = *comp; } else if (ssd == sensor->binner) { sensor->binning_horizontal = 1; sensor->binning_vertical = 1; @@ -2129,8 +2137,6 @@ static void ccs_propagate(struct v4l2_subdev *subdev, CCS_STREAM_PIXEL); fmt->width = comp->width; fmt->height = comp->height; - if (which == V4L2_SUBDEV_FORMAT_ACTIVE && ssd == sensor->src) - sensor->src_src = *crop; break; default: WARN_ON_ONCE(1); @@ -2149,7 +2155,7 @@ static int ccs_set_format_source(struct v4l2_subdev *subdev, unsigned int i; int rval; - rval = __ccs_get_format(subdev, sd_state, fmt); + rval = ccs_get_format(subdev, sd_state, fmt); if (rval) return rval; @@ -2198,20 +2204,17 @@ static int ccs_set_format(struct v4l2_subdev *subdev, struct ccs_subdev *ssd = to_ccs_subdev(subdev); struct v4l2_rect *crop; - mutex_lock(&sensor->mutex); - if (fmt->pad == ssd->source_pad) { int rval; rval = ccs_set_format_source(subdev, sd_state, fmt); - mutex_unlock(&sensor->mutex); - return rval; } /* Sink pad. Width and height are changeable here. */ - fmt->format.code = __ccs_get_mbus_code(subdev, fmt->pad); + fmt->format.code = ccs_get_mbus_code(subdev, fmt->pad); + fmt->format.width &= ~1; fmt->format.height &= ~1; fmt->format.field = V4L2_FIELD_NONE; @@ -2234,8 +2237,6 @@ static int ccs_set_format(struct v4l2_subdev *subdev, crop->height = fmt->format.height; ccs_propagate(subdev, sd_state, fmt->which, V4L2_SEL_TGT_CROP); - mutex_unlock(&sensor->mutex); - return 0; } @@ -2537,9 +2538,6 @@ static int ccs_set_crop(struct v4l2_subdev *subdev, if (ssd != sensor->pixel_array && sel->pad == CCS_PAD_SINK) ccs_propagate(subdev, sd_state, sel->which, V4L2_SEL_TGT_CROP); - else if (sel->which == V4L2_SUBDEV_FORMAT_ACTIVE && - ssd == sensor->pixel_array) - sensor->pa_src = sel->r; return 0; } @@ -2609,8 +2607,6 @@ static int ccs_set_selection(struct v4l2_subdev *subdev, if (ret) return ret; - mutex_lock(&sensor->mutex); - sel->r.left = max(0, sel->r.left & ~1); sel->r.top = max(0, sel->r.top & ~1); sel->r.width = CCS_ALIGN_DIM(sel->r.width, sel->flags); @@ -2632,7 +2628,6 @@ static int ccs_set_selection(struct v4l2_subdev *subdev, ret = -EINVAL; } - mutex_unlock(&sensor->mutex); return ret; } @@ -3002,6 +2997,7 @@ static int ccs_init_subdev(struct ccs_sensor *sensor, ssd->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; ssd->sd.entity.function = function; + ssd->sd.state_lock = &sensor->mutex; ssd->sensor = sensor; ssd->npads = num_pads; @@ -3059,10 +3055,8 @@ static int ccs_init_state(struct v4l2_subdev *sd, fmt->field = V4L2_FIELD_NONE; if (ssd == sensor->pixel_array) { - if (is_active) - sensor->pa_src = *crop; - mutex_unlock(&sensor->mutex); + return 0; } diff --git a/drivers/media/i2c/ccs/ccs.h b/drivers/media/i2c/ccs/ccs.h index 0bdb8cd3accb8..e885063c89f0c 100644 --- a/drivers/media/i2c/ccs/ccs.h +++ b/drivers/media/i2c/ccs/ccs.h @@ -225,7 +225,6 @@ struct ccs_sensor { u32 mbus_frame_fmts; const struct ccs_csi_data_format *csi_format; const struct ccs_csi_data_format *internal_csi_format; - struct v4l2_rect pa_src, scaler_sink, src_src; u32 default_mbus_frame_fmts; int default_pixel_order; struct ccs_data_container sdata, mdata;