4.15-stable review patch. If anyone has any objections, please let me know.
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From: Hans Verkuil hans.verkuil@cisco.com
commit 0fa2c5f954c41e870fe327907c01cb8f7ea8d5a2 upstream.
If the framebuffer is enabled and error injection is disabled, then creating the controls for the video output device would fail with an error.
This is because the Clear Framebuffer control uses the 'vivid control class' and that control class isn't added if error injection is disabled.
In addition, this control was added to e.g. vbi devices as well, which makes no sense.
Move this control to its own control handler and handle it correctly.
Signed-off-by: Hans Verkuil hans.verkuil@cisco.com Acked-by: Sakari Ailus sakari.ailus@linux.intel.com Signed-off-by: Mauro Carvalho Chehab mchehab@s-opensource.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/media/platform/vivid/vivid-core.h | 1 drivers/media/platform/vivid/vivid-ctrls.c | 35 ++++++++++++++++++++++++----- 2 files changed, 30 insertions(+), 6 deletions(-)
--- a/drivers/media/platform/vivid/vivid-core.h +++ b/drivers/media/platform/vivid/vivid-core.h @@ -154,6 +154,7 @@ struct vivid_dev { struct v4l2_ctrl_handler ctrl_hdl_streaming; struct v4l2_ctrl_handler ctrl_hdl_sdtv_cap; struct v4l2_ctrl_handler ctrl_hdl_loop_cap; + struct v4l2_ctrl_handler ctrl_hdl_fb; struct video_device vid_cap_dev; struct v4l2_ctrl_handler ctrl_hdl_vid_cap; struct video_device vid_out_dev; --- a/drivers/media/platform/vivid/vivid-ctrls.c +++ b/drivers/media/platform/vivid/vivid-ctrls.c @@ -120,9 +120,6 @@ static int vivid_user_gen_s_ctrl(struct clear_bit(V4L2_FL_REGISTERED, &dev->radio_rx_dev.flags); clear_bit(V4L2_FL_REGISTERED, &dev->radio_tx_dev.flags); break; - case VIVID_CID_CLEAR_FB: - vivid_clear_fb(dev); - break; case VIVID_CID_BUTTON: dev->button_pressed = 30; break; @@ -274,8 +271,28 @@ static const struct v4l2_ctrl_config viv .type = V4L2_CTRL_TYPE_BUTTON, };
+ +/* Framebuffer Controls */ + +static int vivid_fb_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct vivid_dev *dev = container_of(ctrl->handler, + struct vivid_dev, ctrl_hdl_fb); + + switch (ctrl->id) { + case VIVID_CID_CLEAR_FB: + vivid_clear_fb(dev); + break; + } + return 0; +} + +static const struct v4l2_ctrl_ops vivid_fb_ctrl_ops = { + .s_ctrl = vivid_fb_s_ctrl, +}; + static const struct v4l2_ctrl_config vivid_ctrl_clear_fb = { - .ops = &vivid_user_gen_ctrl_ops, + .ops = &vivid_fb_ctrl_ops, .id = VIVID_CID_CLEAR_FB, .name = "Clear Framebuffer", .type = V4L2_CTRL_TYPE_BUTTON, @@ -1357,6 +1374,7 @@ int vivid_create_controls(struct vivid_d struct v4l2_ctrl_handler *hdl_streaming = &dev->ctrl_hdl_streaming; struct v4l2_ctrl_handler *hdl_sdtv_cap = &dev->ctrl_hdl_sdtv_cap; struct v4l2_ctrl_handler *hdl_loop_cap = &dev->ctrl_hdl_loop_cap; + struct v4l2_ctrl_handler *hdl_fb = &dev->ctrl_hdl_fb; struct v4l2_ctrl_handler *hdl_vid_cap = &dev->ctrl_hdl_vid_cap; struct v4l2_ctrl_handler *hdl_vid_out = &dev->ctrl_hdl_vid_out; struct v4l2_ctrl_handler *hdl_vbi_cap = &dev->ctrl_hdl_vbi_cap; @@ -1384,10 +1402,12 @@ int vivid_create_controls(struct vivid_d v4l2_ctrl_new_custom(hdl_sdtv_cap, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_loop_cap, 1); v4l2_ctrl_new_custom(hdl_loop_cap, &vivid_ctrl_class, NULL); + v4l2_ctrl_handler_init(hdl_fb, 1); + v4l2_ctrl_new_custom(hdl_fb, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vid_cap, 55); v4l2_ctrl_new_custom(hdl_vid_cap, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vid_out, 26); - if (!no_error_inj) + if (!no_error_inj || dev->has_fb) v4l2_ctrl_new_custom(hdl_vid_out, &vivid_ctrl_class, NULL); v4l2_ctrl_handler_init(hdl_vbi_cap, 21); v4l2_ctrl_new_custom(hdl_vbi_cap, &vivid_ctrl_class, NULL); @@ -1561,7 +1581,7 @@ int vivid_create_controls(struct vivid_d v4l2_ctrl_new_custom(hdl_loop_cap, &vivid_ctrl_loop_video, NULL);
if (dev->has_fb) - v4l2_ctrl_new_custom(hdl_user_gen, &vivid_ctrl_clear_fb, NULL); + v4l2_ctrl_new_custom(hdl_fb, &vivid_ctrl_clear_fb, NULL);
if (dev->has_radio_rx) { v4l2_ctrl_new_custom(hdl_radio_rx, &vivid_ctrl_radio_hw_seek_mode, NULL); @@ -1658,6 +1678,7 @@ int vivid_create_controls(struct vivid_d v4l2_ctrl_add_handler(hdl_vid_cap, hdl_streaming, NULL); v4l2_ctrl_add_handler(hdl_vid_cap, hdl_sdtv_cap, NULL); v4l2_ctrl_add_handler(hdl_vid_cap, hdl_loop_cap, NULL); + v4l2_ctrl_add_handler(hdl_vid_cap, hdl_fb, NULL); if (hdl_vid_cap->error) return hdl_vid_cap->error; dev->vid_cap_dev.ctrl_handler = hdl_vid_cap; @@ -1666,6 +1687,7 @@ int vivid_create_controls(struct vivid_d v4l2_ctrl_add_handler(hdl_vid_out, hdl_user_gen, NULL); v4l2_ctrl_add_handler(hdl_vid_out, hdl_user_aud, NULL); v4l2_ctrl_add_handler(hdl_vid_out, hdl_streaming, NULL); + v4l2_ctrl_add_handler(hdl_vid_out, hdl_fb, NULL); if (hdl_vid_out->error) return hdl_vid_out->error; dev->vid_out_dev.ctrl_handler = hdl_vid_out; @@ -1725,4 +1747,5 @@ void vivid_free_controls(struct vivid_de v4l2_ctrl_handler_free(&dev->ctrl_hdl_streaming); v4l2_ctrl_handler_free(&dev->ctrl_hdl_sdtv_cap); v4l2_ctrl_handler_free(&dev->ctrl_hdl_loop_cap); + v4l2_ctrl_handler_free(&dev->ctrl_hdl_fb); }