Add support for the test_pattern control and the h/vflip controls.
This makes it possible to switch to more interesting test patterns and to
test control handling in v4l-subdevs.
There are more tpg-related controls that can be added, but this is a good
start.
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
Changes since v2:
- dropped ops field for the custom vimc control class, it's not needed.
---
drivers/media/platform/vimc/vimc-common.h | 5 +++
drivers/media/platform/vimc/vimc-sensor.c | 63 ++++++++++++++++++++++++++++++-
2 files changed, 67 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/vimc/vimc-common.h
b/drivers/media/platform/vimc/vimc-common.h
index dca528a316e7..2e9981b18166 100644
--- a/drivers/media/platform/vimc/vimc-common.h
+++ b/drivers/media/platform/vimc/vimc-common.h
@@ -22,6 +22,11 @@
#include <media/media-device.h>
#include <media/v4l2-device.h>
+/* VIMC-specific controls */
+#define VIMC_CID_VIMC_BASE (0x00f00000 | 0xf000)
+#define VIMC_CID_VIMC_CLASS (0x00f00000 | 1)
+#define VIMC_CID_TEST_PATTERN (VIMC_CID_VIMC_BASE + 0)
+
#define VIMC_FRAME_MAX_WIDTH 4096
#define VIMC_FRAME_MAX_HEIGHT 2160
#define VIMC_FRAME_MIN_WIDTH 16
diff --git a/drivers/media/platform/vimc/vimc-sensor.c
b/drivers/media/platform/vimc/vimc-sensor.c
index 02e68c8fc02b..1ab52a821b8e 100644
--- a/drivers/media/platform/vimc/vimc-sensor.c
+++ b/drivers/media/platform/vimc/vimc-sensor.c
@@ -22,6 +22,7 @@
#include <linux/platform_device.h>
#include <linux/v4l2-mediabus.h>
#include <linux/vmalloc.h>
+#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-tpg.h>
@@ -38,6 +39,7 @@ struct vimc_sen_device {
u8 *frame;
/* The active format */
struct v4l2_mbus_framefmt mbus_format;
+ struct v4l2_ctrl_handler hdl;
};
static const struct v4l2_mbus_framefmt fmt_default = {
@@ -291,6 +293,31 @@ static const struct v4l2_subdev_ops vimc_sen_ops = {
.video = &vimc_sen_video_ops,
};
+static int vimc_sen_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct vimc_sen_device *vsen =
+ container_of(ctrl->handler, struct vimc_sen_device, hdl);
+
+ switch (ctrl->id) {
+ case VIMC_CID_TEST_PATTERN:
+ tpg_s_pattern(&vsen->tpg, ctrl->val);
+ break;
+ case V4L2_CID_HFLIP:
+ tpg_s_hflip(&vsen->tpg, ctrl->val);
+ break;
+ case V4L2_CID_VFLIP:
+ tpg_s_vflip(&vsen->tpg, ctrl->val);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops vimc_sen_ctrl_ops = {
+ .s_ctrl = vimc_sen_s_ctrl,
+};
+
static void vimc_sen_comp_unbind(struct device *comp, struct device *master,
void *master_data)
{
@@ -299,10 +326,28 @@ static void vimc_sen_comp_unbind(struct device *comp,
struct device *master,
container_of(ved, struct vimc_sen_device, ved);
vimc_ent_sd_unregister(ved, &vsen->sd);
+ v4l2_ctrl_handler_free(&vsen->hdl);
tpg_free(&vsen->tpg);
kfree(vsen);
}
+/* Image Processing Controls */
+static const struct v4l2_ctrl_config vimc_sen_ctrl_class = {
+ .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY,
+ .id = VIMC_CID_VIMC_CLASS,
+ .name = "VIMC Controls",
+ .type = V4L2_CTRL_TYPE_CTRL_CLASS,
+};
+
+static const struct v4l2_ctrl_config vimc_sen_ctrl_test_pattern = {
+ .ops = &vimc_sen_ctrl_ops,
+ .id = VIMC_CID_TEST_PATTERN,
+ .name = "Test Pattern",
+ .type = V4L2_CTRL_TYPE_MENU,
+ .max = TPG_PAT_NOISE,
+ .qmenu = tpg_pattern_strings,
+};
+
static int vimc_sen_comp_bind(struct device *comp, struct device *master,
void *master_data)
{
@@ -316,6 +361,20 @@ static int vimc_sen_comp_bind(struct device *comp, struct
device *master,
if (!vsen)
return -ENOMEM;
+ v4l2_ctrl_handler_init(&vsen->hdl, 4);
+
+ v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_class, NULL);
+ v4l2_ctrl_new_custom(&vsen->hdl, &vimc_sen_ctrl_test_pattern, NULL);
+ v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&vsen->hdl, &vimc_sen_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ vsen->sd.ctrl_handler = &vsen->hdl;
+ if (vsen->hdl.error) {
+ ret = vsen->hdl.error;
+ goto err_free_vsen;
+ }
+
/* Initialize ved and sd */
ret = vimc_ent_sd_register(&vsen->ved, &vsen->sd, v4l2_dev,
pdata->entity_name,
@@ -323,7 +382,7 @@ static int vimc_sen_comp_bind(struct device *comp, struct
device *master,
(const unsigned long[1])
{MEDIA_PAD_FL_SOURCE},
&vimc_sen_ops);
if (ret)
- goto err_free_vsen;
+ goto err_free_hdl;
dev_set_drvdata(comp, &vsen->ved);
vsen->dev = comp;
@@ -342,6 +401,8 @@ static int vimc_sen_comp_bind(struct device *comp, struct
device *master,
err_unregister_ent_sd:
vimc_ent_sd_unregister(&vsen->ved, &vsen->sd);
+err_free_hdl:
+ v4l2_ctrl_handler_free(&vsen->hdl);
err_free_vsen:
kfree(vsen);
--
2.14.1
