[PATCH v3 17/29] media: iris: implement query_cap, query_ctrl and query_menu ioctls

Dikshita Agarwal via B4 Relay
2024-08-27T10:06:35Z

From: Vedang Nagar <quic_vnagar@quicinc.com>

Implement query_cap, query_ctrl and query_menu ioctls in the
driver with necessary hooks.

Signed-off-by: Vedang Nagar <quic_vnagar@quicinc.com>
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
---
drivers/media/platform/qcom/iris/iris_vidc.c | 89 ++++++++++++++++++++++++++++
1 file changed, 89 insertions(+)

diff --git a/drivers/media/platform/qcom/iris/iris_vidc.c b/drivers/media/platform/qcom/iris/iris_vidc.c
index 7d5da30cb1d1..1dd612b7cec5 100644
--- a/drivers/media/platform/qcom/iris/iris_vidc.c
+++ b/drivers/media/platform/qcom/iris/iris_vidc.c
@@ -362,6 +362,92 @@ static int iris_enum_framesizes(struct file *filp, void *fh,
return ret;
}

+static int iris_querycap(struct file *filp, void *fh, struct v4l2_capability *cap)
+{
+ struct iris_inst *inst;
+ int ret = 0;
+
+ inst = iris_get_inst(filp, fh);
+ if (!inst)
+ return -EINVAL;
+
+ mutex_lock(&inst->lock);
+ strscpy(cap->driver, IRIS_DRV_NAME, sizeof(cap->driver));
+ strscpy(cap->bus_info, IRIS_BUS_NAME, sizeof(cap->bus_info));
+ memset(cap->reserved, 0, sizeof(cap->reserved));
+ strscpy(cap->card, "iris_decoder", sizeof(cap->card));
+ mutex_unlock(&inst->lock);
+
+ return ret;
+}
+
+static int iris_queryctrl(struct file *filp, void *fh, struct v4l2_queryctrl *q_ctrl)
+{
+ struct v4l2_ctrl *ctrl;
+ struct iris_inst *inst;
+ int ret = 0;
+
+ inst = iris_get_inst(filp, fh);
+ if (!inst || !q_ctrl)
+ return -EINVAL;
+
+ mutex_lock(&inst->lock);
+ ctrl = v4l2_ctrl_find(&inst->ctrl_handler, q_ctrl->id);
+ if (!ctrl) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ q_ctrl->minimum = ctrl->minimum;
+ q_ctrl->maximum = ctrl->maximum;
+ q_ctrl->default_value = ctrl->default_value;
+ q_ctrl->flags = 0;
+ q_ctrl->step = ctrl->step;
+
+unlock:
+ mutex_unlock(&inst->lock);
+
+ return ret;
+}
+
+static int iris_querymenu(struct file *filp, void *fh, struct v4l2_querymenu *qmenu)
+{
+ struct v4l2_ctrl *ctrl;
+ struct iris_inst *inst;
+ int ret = 0;
+
+ inst = iris_get_inst(filp, fh);
+ if (!inst || !qmenu)
+ return -EINVAL;
+
+ mutex_lock(&inst->lock);
+ ctrl = v4l2_ctrl_find(&inst->ctrl_handler, qmenu->id);
+ if (!ctrl) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ if (ctrl->type != V4L2_CTRL_TYPE_MENU) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ if (qmenu->index < ctrl->minimum || qmenu->index > ctrl->maximum) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+ if (ctrl->menu_skip_mask & (1 << qmenu->index)) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+
+unlock:
+ mutex_unlock(&inst->lock);
+
+ return ret;
+}
+
static int iris_g_selection(struct file *filp, void *fh, struct v4l2_selection *s)
{
struct iris_inst *inst;
@@ -453,6 +539,9 @@ static const struct v4l2_ioctl_ops iris_v4l2_ioctl_ops = {
.vidioc_g_fmt_vid_out_mplane = iris_g_fmt_vid_mplane,
.vidioc_enum_framesizes = iris_enum_framesizes,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
+ .vidioc_querycap = iris_querycap,
+ .vidioc_queryctrl = iris_queryctrl,
+ .vidioc_querymenu = iris_querymenu,
.vidioc_g_selection = iris_g_selection,
.vidioc_subscribe_event = iris_subscribe_event,
.vidioc_unsubscribe_event = iris_unsubscribe_event,

--
2.34.1