Allow reconfiguration of the look-up table and processing mode at
runtime.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/vsp1/vsp1_clu.c | 41 +++++++++++++++++++++-------------
drivers/media/platform/vsp1/vsp1_clu.h | 4 ++++
2 files changed, 30 insertions(+), 15 deletions(-)
diff --git a/drivers/media/platform/vsp1/vsp1_clu.c b/drivers/media/platform/vsp1/vsp1_clu.c
index 913070ec09e7..2f77c2c60ad2 100644
--- a/drivers/media/platform/vsp1/vsp1_clu.c
+++ b/drivers/media/platform/vsp1/vsp1_clu.c
@@ -55,7 +55,9 @@ static int clu_set_table(struct vsp1_clu *clu, struct v4l2_ctrl *ctrl)
for (i = 0; i < 17 * 17 * 17; ++i)
vsp1_dl_fragment_write(dlb, VI6_CLU_DATA, ctrl->p_new.p_u32[i]);
+ spin_lock_irq(&clu->lock);
swap(clu->clu, dlb);
+ spin_unlock_irq(&clu->lock);
vsp1_dl_fragment_free(dlb);
return 0;
@@ -208,32 +210,39 @@ static void clu_configure(struct vsp1_entity *entity,
struct vsp1_dl_list *dl, bool full)
{
struct vsp1_clu *clu = to_clu(&entity->subdev);
- struct v4l2_mbus_framefmt *format;
+ struct vsp1_dl_body *dlb;
+ unsigned long flags;
u32 ctrl = VI6_CLU_CTRL_AAI | VI6_CLU_CTRL_MVS | VI6_CLU_CTRL_EN;
- if (!full)
+ /* The format can't be changed during streaming, only verify it at
+ * stream start and store the information internally for future partial
+ * reconfiguration calls.
+ */
+ if (full) {
+ struct v4l2_mbus_framefmt *format;
+
+ format = vsp1_entity_get_pad_format(&clu->entity,
+ clu->entity.config,
+ CLU_PAD_SINK);
+ clu->yuv_mode = format->code == MEDIA_BUS_FMT_AYUV8_1X32;
return;
-
- format = vsp1_entity_get_pad_format(&clu->entity, clu->entity.config,
- CLU_PAD_SINK);
-
- mutex_lock(clu->ctrls.lock);
+ }
/* 2D mode can only be used with the YCbCr pixel encoding. */
- if (clu->mode == V4L2_CID_VSP1_CLU_MODE_2D &&
- format->code == MEDIA_BUS_FMT_AYUV8_1X32)
+ if (clu->mode == V4L2_CID_VSP1_CLU_MODE_2D && clu->yuv_mode)
ctrl |= VI6_CLU_CTRL_AX1I_2D | VI6_CLU_CTRL_AX2I_2D
| VI6_CLU_CTRL_OS0_2D | VI6_CLU_CTRL_OS1_2D
| VI6_CLU_CTRL_OS2_2D | VI6_CLU_CTRL_M2D;
- if (clu->clu) {
- vsp1_dl_list_add_fragment(dl, clu->clu);
- clu->clu = NULL;
- }
+ vsp1_clu_write(clu, dl, VI6_CLU_CTRL, ctrl);
- mutex_unlock(clu->ctrls.lock);
+ spin_lock_irqsave(&clu->lock, flags);
+ dlb = clu->clu;
+ clu->clu = NULL;
+ spin_unlock_irqrestore(&clu->lock, flags);
- vsp1_clu_write(clu, dl, VI6_CLU_CTRL, ctrl);
+ if (dlb)
+ vsp1_dl_list_add_fragment(dl, dlb);
}
static const struct vsp1_entity_operations clu_entity_ops = {
@@ -253,6 +262,8 @@ struct vsp1_clu *vsp1_clu_create(struct vsp1_device *vsp1)
if (clu == NULL)
return ERR_PTR(-ENOMEM);
+ spin_lock_init(&clu->lock);
+
clu->entity.ops = &clu_entity_ops;
clu->entity.type = VSP1_ENTITY_CLU;
diff --git a/drivers/media/platform/vsp1/vsp1_clu.h b/drivers/media/platform/vsp1/vsp1_clu.h
index 33a69029c719..036e0a2f1a42 100644
--- a/drivers/media/platform/vsp1/vsp1_clu.h
+++ b/drivers/media/platform/vsp1/vsp1_clu.h
@@ -13,6 +13,8 @@
#ifndef __VSP1_CLU_H__
#define __VSP1_CLU_H__
+#include <linux/spinlock.h>
+
#include <media/media-entity.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-subdev.h>
@@ -30,6 +32,8 @@ struct vsp1_clu {
struct v4l2_ctrl_handler ctrls;
+ bool yuv_mode;
+ spinlock_t lock;
unsigned int mode;
struct vsp1_dl_body *clu;
};
--
Regards,
Laurent Pinchart
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