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Subject: media: ov6650: Fix missing frame interval enumeration support Author: Janusz Krzysztofik <[email protected]> Date: Mon May 4 19:10:12 2020 +0200 According to v4l2-compliance utility, a video device which supports V4L2_CAP_TIMEPERFRAME via .vidioc_s_parm() operation should also support .vidioc_enum_frameintervals(). If the former is implemented via a call to v4l2_s_parm_cap() which in turn calls a subdevice .s_frame_interval() pad operation, the video device may want to implement the latter by passing frame interval enumeration requests to the subdevice .enum_frame_intervals() video operation. If that operation is not supported by the subdevice and failure is returned by the video device, the compliance test issues a warning. Implement the missing pad operation. Enumerate frame intervals possible to be set via pixel clock adjustment, as implemented by .s_frame_interval(), but not exceeding a reasonable maximum of 1 second. [Sakari Ailus: Rebased on mbus config pad op patches] Signed-off-by: Janusz Krzysztofik <[email protected]> Signed-off-by: Sakari Ailus <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/i2c/ov6650.c | 40 ++++++++++++++++++++++++++++++++++------ 1 file changed, 34 insertions(+), 6 deletions(-) --- diff --git a/drivers/media/i2c/ov6650.c b/drivers/media/i2c/ov6650.c index 9887f486ca5f..d9c1548f43fc 100644 --- a/drivers/media/i2c/ov6650.c +++ b/drivers/media/i2c/ov6650.c @@ -764,6 +764,33 @@ static int ov6650_enum_mbus_code(struct v4l2_subdev *sd, return 0; } +static int ov6650_enum_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_interval_enum *fie) +{ + int i; + + /* enumerate supported frame intervals not exceeding 1 second */ + if (fie->index > CLKRC_DIV_MASK || + GET_CLKRC_DIV(fie->index) > FRAME_RATE_MAX) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(ov6650_codes); i++) + if (fie->code == ov6650_codes[i]) + break; + if (i == ARRAY_SIZE(ov6650_codes)) + return -EINVAL; + + if (!fie->width || fie->width > W_CIF || + !fie->height || fie->height > H_CIF) + return -EINVAL; + + fie->interval.numerator = GET_CLKRC_DIV(fie->index); + fie->interval.denominator = FRAME_RATE_MAX; + + return 0; +} + static int ov6650_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *ival) { @@ -976,12 +1003,13 @@ static const struct v4l2_subdev_video_ops ov6650_video_ops = { }; static const struct v4l2_subdev_pad_ops ov6650_pad_ops = { - .enum_mbus_code = ov6650_enum_mbus_code, - .get_selection = ov6650_get_selection, - .set_selection = ov6650_set_selection, - .get_fmt = ov6650_get_fmt, - .set_fmt = ov6650_set_fmt, - .get_mbus_config = ov6650_get_mbus_config, + .enum_mbus_code = ov6650_enum_mbus_code, + .enum_frame_interval = ov6650_enum_frame_interval, + .get_selection = ov6650_get_selection, + .set_selection = ov6650_set_selection, + .get_fmt = ov6650_get_fmt, + .set_fmt = ov6650_set_fmt, + .get_mbus_config = ov6650_get_mbus_config, }; static const struct v4l2_subdev_ops ov6650_subdev_ops = { _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
