From b4e281666cb2ea1134e0f20445d4a6acbc810e38 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 4 Nov 2021 13:17:50 +0000 Subject: [PATCH] media: atomisp-ov2722: use v4l2_find_nearest_size() Instead of reinventing the wheel, use v4l2_find_nearest_size() in order to get the closest resolution. This should address a bug where the wrong resolution was selected. Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/atomisp/i2c/atomisp-ov2722.c | 118 ++++----------------- drivers/staging/media/atomisp/i2c/ov2722.h | 3 +- 2 files changed, 22 insertions(+), 99 deletions(-) diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c index 90d0871a78a3..da98094d7094 100644 --- a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c +++ b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c @@ -557,7 +557,7 @@ static int ov2722_g_volatile_ctrl(struct v4l2_ctrl *ctrl) ret = ov2722_g_fnumber_range(&dev->sd, &ctrl->val); break; case V4L2_CID_LINK_FREQ: - val = ov2722_res[dev->fmt_idx].mipi_freq; + val = dev->res->mipi_freq; if (val == 0) return -EINVAL; @@ -782,76 +782,6 @@ static int ov2722_s_power(struct v4l2_subdev *sd, int on) return ret; } -/* - * distance - calculate the distance - * @res: resolution - * @w: width - * @h: height - * - * Get the gap between resolution and w/h. - * res->width/height smaller than w/h wouldn't be considered. - * Returns the value of gap or -1 if fail. - */ -#define LARGEST_ALLOWED_RATIO_MISMATCH 800 -static int distance(struct ov2722_resolution *res, u32 w, u32 h) -{ - unsigned int w_ratio = (res->width << 13) / w; - unsigned int h_ratio; - int match; - - if (h == 0) - return -1; - h_ratio = (res->height << 13) / h; - if (h_ratio == 0) - return -1; - match = abs(((w_ratio << 13) / h_ratio) - 8192); - - if ((w_ratio < 8192) || (h_ratio < 8192) || - (match > LARGEST_ALLOWED_RATIO_MISMATCH)) - return -1; - - return w_ratio + h_ratio; -} - -/* Return the nearest higher resolution index */ -static int nearest_resolution_index(int w, int h) -{ - int i; - int idx = -1; - int dist; - int min_dist = INT_MAX; - struct ov2722_resolution *tmp_res = NULL; - - for (i = 0; i < N_RES; i++) { - tmp_res = &ov2722_res[i]; - dist = distance(tmp_res, w, h); - if (dist == -1) - continue; - if (dist < min_dist) { - min_dist = dist; - idx = i; - } - } - - return idx; -} - -static int get_resolution_index(int w, int h) -{ - int i; - - for (i = 0; i < N_RES; i++) { - if (w != ov2722_res[i].width) - continue; - if (h != ov2722_res[i].height) - continue; - - return i; - } - - return -1; -} - /* TODO: remove it. */ static int startup(struct v4l2_subdev *sd) { @@ -866,7 +796,7 @@ static int startup(struct v4l2_subdev *sd) return ret; } - ret = ov2722_write_reg_array(client, ov2722_res[dev->fmt_idx].regs); + ret = ov2722_write_reg_array(client, dev->res->regs); if (ret) { dev_err(&client->dev, "ov2722 write register err.\n"); return ret; @@ -882,9 +812,9 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt = &format->format; struct ov2722_device *dev = to_ov2722_sensor(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov2722_resolution *res; struct camera_mipi_info *ov2722_info = NULL; int ret = 0; - int idx; if (format->pad) return -EINVAL; @@ -895,15 +825,16 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd, return -EINVAL; mutex_lock(&dev->input_lock); - idx = nearest_resolution_index(fmt->width, fmt->height); - if (idx == -1) { - /* return the largest resolution */ - fmt->width = ov2722_res[N_RES - 1].width; - fmt->height = ov2722_res[N_RES - 1].height; - } else { - fmt->width = ov2722_res[idx].width; - fmt->height = ov2722_res[idx].height; - } + res = v4l2_find_nearest_size(ov2722_res_preview, + ARRAY_SIZE(ov2722_res_preview), width, + height, fmt->width, fmt->height); + if (!res) + res = &ov2722_res_preview[N_RES - 1]; + + fmt->width = res->width; + fmt->height = res->height; + dev->res = res; + fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; if (format->which == V4L2_SUBDEV_FORMAT_TRY) { sd_state->pads->try_fmt = *fmt; @@ -911,15 +842,9 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd, return 0; } - dev->fmt_idx = get_resolution_index(fmt->width, fmt->height); - if (dev->fmt_idx == -1) { - dev_err(&client->dev, "get resolution fail\n"); - mutex_unlock(&dev->input_lock); - return -EINVAL; - } - dev->pixels_per_line = ov2722_res[dev->fmt_idx].pixels_per_line; - dev->lines_per_frame = ov2722_res[dev->fmt_idx].lines_per_frame; + dev->pixels_per_line = dev->res->pixels_per_line; + dev->lines_per_frame = dev->res->lines_per_frame; ret = startup(sd); if (ret) { @@ -950,8 +875,7 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd, } } - ret = ov2722_get_intg_factor(client, ov2722_info, - &ov2722_res[dev->fmt_idx]); + ret = ov2722_get_intg_factor(client, ov2722_info, dev->res); if (ret) dev_err(&client->dev, "failed to get integration_factor\n"); @@ -972,8 +896,8 @@ static int ov2722_get_fmt(struct v4l2_subdev *sd, if (!fmt) return -EINVAL; - fmt->width = ov2722_res[dev->fmt_idx].width; - fmt->height = ov2722_res[dev->fmt_idx].height; + fmt->width = dev->res->width; + fmt->height = dev->res->height; fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10; return 0; @@ -1098,7 +1022,7 @@ static int ov2722_g_frame_interval(struct v4l2_subdev *sd, struct ov2722_device *dev = to_ov2722_sensor(sd); interval->interval.numerator = 1; - interval->interval.denominator = ov2722_res[dev->fmt_idx].fps; + interval->interval.denominator = dev->res->fps; return 0; } @@ -1136,7 +1060,7 @@ static int ov2722_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) struct ov2722_device *dev = to_ov2722_sensor(sd); mutex_lock(&dev->input_lock); - *frames = ov2722_res[dev->fmt_idx].skip_frames; + *frames = dev->res->skip_frames; mutex_unlock(&dev->input_lock); return 0; @@ -1220,7 +1144,7 @@ static int ov2722_probe(struct i2c_client *client) mutex_init(&dev->input_lock); - dev->fmt_idx = 0; + dev->res = &ov2722_res_preview[0]; v4l2_i2c_subdev_init(&dev->sd, client, &ov2722_ops); ovpdev = gmin_camera_platform_data(&dev->sd, diff --git a/drivers/staging/media/atomisp/i2c/ov2722.h b/drivers/staging/media/atomisp/i2c/ov2722.h index 7b0debb6c53d..d6e2510bc01c 100644 --- a/drivers/staging/media/atomisp/i2c/ov2722.h +++ b/drivers/staging/media/atomisp/i2c/ov2722.h @@ -201,14 +201,13 @@ struct ov2722_device { struct media_pad pad; struct v4l2_mbus_framefmt format; struct mutex input_lock; + struct ov2722_resolution *res; struct camera_sensor_platform_data *platform_data; int vt_pix_clk_freq_mhz; - int fmt_idx; int run_mode; u16 pixels_per_line; u16 lines_per_frame; - u8 res; u8 type; struct v4l2_ctrl_handler ctrl_handler; -- 2.11.0