diff options
| author |   Hans Verkuil <hans.verkuil@cisco.com> | 2016-02-05 12:44:21 -0200 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-06-28 11:31:16 -0300 |
| commit | 6f8adea2b64f7e1215a99935ea079284488736d5 (patch) | |
| tree | f941ecbeea7f62f85abf8345581e1823b1bd02f6 /drivers/media/platform/vivid/vivid-vid-cap.c | |
| parent | [media] cec: s5p-cec: Add s5p-cec driver (diff) | |
| download | wireguard-linux-6f8adea2b64f7e1215a99935ea079284488736d5.tar.xz wireguard-linux-6f8adea2b64f7e1215a99935ea079284488736d5.zip | |
[media] vivid: add CEC emulation
The vivid driver has been extended to provide CEC adapters for the HDMI
input and HDMI outputs in order to test CEC applications.
This CEC emulation is faithful to the CEC timings (i.e., it all at a
snail's pace).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/vivid/vivid-vid-cap.c')
| -rw-r--r-- | drivers/media/platform/vivid/vivid-vid-cap.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/media/platform/vivid/vivid-vid-cap.c b/drivers/media/platform/vivid/vivid-vid-cap.c index 4f730f355a17..16fcac1b560f 100644 --- a/drivers/media/platform/vivid/vivid-vid-cap.c +++ b/drivers/media/platform/vivid/vivid-vid-cap.c @@ -1701,6 +1701,9 @@ int vidioc_s_edid(struct file *file, void *_fh, struct v4l2_edid *edid) { struct vivid_dev *dev = video_drvdata(file); + u16 phys_addr; + unsigned int i; + int ret; memset(edid->reserved, 0, sizeof(edid->reserved)); if (edid->pad >= dev->num_inputs) @@ -1709,14 +1712,32 @@ int vidioc_s_edid(struct file *file, void *_fh, return -EINVAL; if (edid->blocks == 0) { dev->edid_blocks = 0; - return 0; + phys_addr = CEC_PHYS_ADDR_INVALID; + goto set_phys_addr; } if (edid->blocks > dev->edid_max_blocks) { edid->blocks = dev->edid_max_blocks; return -E2BIG; } + phys_addr = cec_get_edid_phys_addr(edid->edid, edid->blocks * 128, NULL); + ret = cec_phys_addr_validate(phys_addr, &phys_addr, NULL); + if (ret) + return ret; + + if (vb2_is_busy(&dev->vb_vid_cap_q)) + return -EBUSY; + dev->edid_blocks = edid->blocks; memcpy(dev->edid, edid->edid, edid->blocks * 128); + +set_phys_addr: + /* TODO: a proper hotplug detect cycle should be emulated here */ + cec_s_phys_addr(dev->cec_rx_adap, phys_addr, false); + + for (i = 0; i < MAX_OUTPUTS && dev->cec_tx_adap[i]; i++) + cec_s_phys_addr(dev->cec_tx_adap[i], + cec_phys_addr_for_input(phys_addr, i + 1), + false); return 0; } |