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[media] v4l: vsp1: clu: Support runtime modification of controls 

Allow reconfiguration of the look-up table and processing mode at
runtime.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Laurent Pinchart 2016-06-11 04:11:27 -03:00 committed by Mauro Carvalho Chehab
parent f4e37fb73f
commit 20fab5e086
2 changed files with 31 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/media/platform/vsp1/vsp1_clu.c
View File

@ -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;
}
mutex_unlock(clu->ctrls.lock);
vsp1_clu_write(clu, dl, VI6_CLU_CTRL, ctrl);
spin_lock_irqsave(&clu->lock, flags);
dlb = clu->clu;
clu->clu = NULL;
spin_unlock_irqrestore(&clu->lock, flags);
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;

4
drivers/media/platform/vsp1/vsp1_clu.h
View File

@ -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;
};