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[media] v4l: vsp1: lut: Use display list fragments to fill LUT
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> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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@ -38,10 +38,25 @@ static inline void vsp1_lut_write(struct vsp1_lut *lut, struct vsp1_dl_list *dl,
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* V4L2 Subdevice Core Operations
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*/
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static void lut_set_table(struct vsp1_lut *lut, struct vsp1_lut_config *config)
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static int lut_set_table(struct vsp1_lut *lut, struct vsp1_lut_config *config)
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{
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memcpy_toio(lut->entity.vsp1->mmio + VI6_LUT_TABLE, config->lut,
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sizeof(config->lut));
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struct vsp1_dl_body *dlb;
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unsigned int i;
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dlb = vsp1_dl_fragment_alloc(lut->entity.vsp1, ARRAY_SIZE(config->lut));
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if (!dlb)
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return -ENOMEM;
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for (i = 0; i < ARRAY_SIZE(config->lut); ++i)
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vsp1_dl_fragment_write(dlb, VI6_LUT_TABLE + 4 * i,
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config->lut[i]);
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mutex_lock(&lut->lock);
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swap(lut->lut, dlb);
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mutex_unlock(&lut->lock);
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vsp1_dl_fragment_free(dlb);
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return 0;
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}
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static long lut_ioctl(struct v4l2_subdev *subdev, unsigned int cmd, void *arg)
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@ -50,8 +65,7 @@ static long lut_ioctl(struct v4l2_subdev *subdev, unsigned int cmd, void *arg)
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switch (cmd) {
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case VIDIOC_VSP1_LUT_CONFIG:
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lut_set_table(lut, arg);
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return 0;
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return lut_set_table(lut, arg);
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default:
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return -ENOIOCTLCMD;
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@ -161,6 +175,13 @@ static void lut_configure(struct vsp1_entity *entity,
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struct vsp1_lut *lut = to_lut(&entity->subdev);
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vsp1_lut_write(lut, dl, VI6_LUT_CTRL, VI6_LUT_CTRL_EN);
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mutex_lock(&lut->lock);
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if (lut->lut) {
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vsp1_dl_list_add_fragment(dl, lut->lut);
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lut->lut = NULL;
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}
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mutex_unlock(&lut->lock);
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}
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static const struct vsp1_entity_operations lut_entity_ops = {
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@ -13,6 +13,8 @@
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#ifndef __VSP1_LUT_H__
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#define __VSP1_LUT_H__
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#include <linux/mutex.h>
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#include <media/media-entity.h>
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#include <media/v4l2-subdev.h>
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@ -25,7 +27,9 @@ struct vsp1_device;
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struct vsp1_lut {
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struct vsp1_entity entity;
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u32 lut[256];
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struct mutex lock;
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struct vsp1_dl_body *lut;
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};
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static inline struct vsp1_lut *to_lut(struct v4l2_subdev *subdev)
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