@@ -38,10 +38,25 @@ static inline void vsp1_lut_write(struct vsp1_lut *lut, struct vsp1_dl_list *dl,
* V4L2 Subdevice Core Operations
*/
-static void lut_set_table(struct vsp1_lut *lut, struct vsp1_lut_config *config)
+static int lut_set_table(struct vsp1_lut *lut, struct vsp1_lut_config *config)
{
- memcpy_toio(lut->entity.vsp1->mmio + VI6_LUT_TABLE, config->lut,
- sizeof(config->lut));
+ struct vsp1_dl_body *dlb;
+ unsigned int i;
+
+ dlb = vsp1_dl_fragment_alloc(lut->entity.vsp1, ARRAY_SIZE(config->lut));
+ if (!dlb)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(config->lut); ++i)
+ vsp1_dl_fragment_write(dlb, VI6_LUT_TABLE + 4 * i,
+ config->lut[i]);
+
+ mutex_lock(&lut->lock);
+ swap(lut->lut, dlb);
+ mutex_unlock(&lut->lock);
+
+ vsp1_dl_fragment_free(dlb);
+ return 0;
}
static long lut_ioctl(struct v4l2_subdev *subdev, unsigned int cmd, void *arg)
@@ -50,8 +65,7 @@ static long lut_ioctl(struct v4l2_subdev *subdev, unsigned int cmd, void *arg)
switch (cmd) {
case VIDIOC_VSP1_LUT_CONFIG:
- lut_set_table(lut, arg);
- return 0;
+ return lut_set_table(lut, arg);
default:
return -ENOIOCTLCMD;
@@ -161,6 +175,13 @@ static void lut_configure(struct vsp1_entity *entity,
struct vsp1_lut *lut = to_lut(&entity->subdev);
vsp1_lut_write(lut, dl, VI6_LUT_CTRL, VI6_LUT_CTRL_EN);
+
+ mutex_lock(&lut->lock);
+ if (lut->lut) {
+ vsp1_dl_list_add_fragment(dl, lut->lut);
+ lut->lut = NULL;
+ }
+ mutex_unlock(&lut->lock);
}
static const struct vsp1_entity_operations lut_entity_ops = {
@@ -13,6 +13,8 @@
#ifndef __VSP1_LUT_H__
#define __VSP1_LUT_H__
+#include <linux/mutex.h>
+
#include <media/media-entity.h>
#include <media/v4l2-subdev.h>
@@ -25,7 +27,9 @@ struct vsp1_device;
struct vsp1_lut {
struct vsp1_entity entity;
- u32 lut[256];
+
+ struct mutex lock;
+ struct vsp1_dl_body *lut;
};
static inline struct vsp1_lut *to_lut(struct v4l2_subdev *subdev)
Synchronize the userspace LUT setup with the pipeline operation by using a display list fragment to store LUT data. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> --- drivers/media/platform/vsp1/vsp1_lut.c | 31 ++++++++++++++++++++++++++----- drivers/media/platform/vsp1/vsp1_lut.h | 6 +++++- 2 files changed, 31 insertions(+), 6 deletions(-)