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path: root/drivers/media/platform/vsp1/vsp1_wpf.c
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Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_wpf.c')
-rw-r--r--drivers/media/platform/vsp1/vsp1_wpf.c83
1 files changed, 67 insertions, 16 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c
index 32bb207b2007..208498fa6ed7 100644
--- a/drivers/media/platform/vsp1/vsp1_wpf.c
+++ b/drivers/media/platform/vsp1/vsp1_wpf.c
@@ -232,17 +232,41 @@ static void vsp1_wpf_destroy(struct vsp1_entity *entity)
vsp1_dlm_destroy(wpf->dlm);
}
+static int wpf_configure_writeback_chain(struct vsp1_rwpf *wpf,
+ struct vsp1_dl_list *dl)
+{
+ unsigned int index = wpf->entity.index;
+ struct vsp1_dl_list *dl_next;
+ struct vsp1_dl_body *dlb;
+
+ dl_next = vsp1_dl_list_get(wpf->dlm);
+ if (!dl_next) {
+ dev_err(wpf->entity.vsp1->dev,
+ "Failed to obtain a dl list, disabling writeback\n");
+ return -ENOMEM;
+ }
+
+ dlb = vsp1_dl_list_get_body0(dl_next);
+ vsp1_dl_body_write(dlb, VI6_WPF_WRBCK_CTRL(index), 0);
+ vsp1_dl_list_add_chain(dl, dl_next);
+
+ return 0;
+}
+
static void wpf_configure_stream(struct vsp1_entity *entity,
struct vsp1_pipeline *pipe,
+ struct vsp1_dl_list *dl,
struct vsp1_dl_body *dlb)
{
struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev);
struct vsp1_device *vsp1 = wpf->entity.vsp1;
const struct v4l2_mbus_framefmt *source_format;
const struct v4l2_mbus_framefmt *sink_format;
+ unsigned int index = wpf->entity.index;
unsigned int i;
u32 outfmt = 0;
u32 srcrpf = 0;
+ int ret;
sink_format = vsp1_entity_get_pad_format(&wpf->entity,
wpf->entity.config,
@@ -250,8 +274,9 @@ static void wpf_configure_stream(struct vsp1_entity *entity,
source_format = vsp1_entity_get_pad_format(&wpf->entity,
wpf->entity.config,
RWPF_PAD_SOURCE);
+
/* Format */
- if (!pipe->lif) {
+ if (!pipe->lif || wpf->writeback) {
const struct v4l2_pix_format_mplane *format = &wpf->format;
const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
@@ -276,8 +301,7 @@ static void wpf_configure_stream(struct vsp1_entity *entity,
vsp1_wpf_write(wpf, dlb, VI6_WPF_DSWAP, fmtinfo->swap);
- if (vsp1_feature(vsp1, VSP1_HAS_WPF_HFLIP) &&
- wpf->entity.index == 0)
+ if (vsp1_feature(vsp1, VSP1_HAS_WPF_HFLIP) && index == 0)
vsp1_wpf_write(wpf, dlb, VI6_WPF_ROT_CTRL,
VI6_WPF_ROT_CTRL_LN16 |
(256 << VI6_WPF_ROT_CTRL_LMEM_WD_SHIFT));
@@ -288,11 +312,9 @@ static void wpf_configure_stream(struct vsp1_entity *entity,
wpf->outfmt = outfmt;
- vsp1_dl_body_write(dlb, VI6_DPR_WPF_FPORCH(wpf->entity.index),
+ vsp1_dl_body_write(dlb, VI6_DPR_WPF_FPORCH(index),
VI6_DPR_WPF_FPORCH_FP_WPFN);
- vsp1_dl_body_write(dlb, VI6_WPF_WRBCK_CTRL, 0);
-
/*
* Sources. If the pipeline has a single input and BRx is not used,
* configure it as the master layer. Otherwise configure all
@@ -318,9 +340,26 @@ static void wpf_configure_stream(struct vsp1_entity *entity,
vsp1_wpf_write(wpf, dlb, VI6_WPF_SRCRPF, srcrpf);
/* Enable interrupts. */
- vsp1_dl_body_write(dlb, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
- vsp1_dl_body_write(dlb, VI6_WPF_IRQ_ENB(wpf->entity.index),
+ vsp1_dl_body_write(dlb, VI6_WPF_IRQ_STA(index), 0);
+ vsp1_dl_body_write(dlb, VI6_WPF_IRQ_ENB(index),
VI6_WFP_IRQ_ENB_DFEE);
+
+ /*
+ * Configure writeback for display pipelines (the wpf writeback flag is
+ * never set for memory-to-memory pipelines). Start by adding a chained
+ * display list to disable writeback after a single frame, and process
+ * to enable writeback. If the display list allocation fails don't
+ * enable writeback as we wouldn't be able to safely disable it,
+ * resulting in possible memory corruption.
+ */
+ if (wpf->writeback) {
+ ret = wpf_configure_writeback_chain(wpf, dl);
+ if (ret < 0)
+ wpf->writeback = false;
+ }
+
+ vsp1_dl_body_write(dlb, VI6_WPF_WRBCK_CTRL(index),
+ wpf->writeback ? VI6_WPF_WRBCK_CTRL_WBMD : 0);
}
static void wpf_configure_frame(struct vsp1_entity *entity,
@@ -362,6 +401,7 @@ static void wpf_configure_partition(struct vsp1_entity *entity,
const struct vsp1_format_info *fmtinfo = wpf->fmtinfo;
unsigned int width;
unsigned int height;
+ unsigned int left;
unsigned int offset;
unsigned int flip;
unsigned int i;
@@ -371,13 +411,16 @@ static void wpf_configure_partition(struct vsp1_entity *entity,
RWPF_PAD_SINK);
width = sink_format->width;
height = sink_format->height;
+ left = 0;
/*
* Cropping. The partition algorithm can split the image into
* multiple slices.
*/
- if (pipe->partitions > 1)
+ if (pipe->partitions > 1) {
width = pipe->partition->wpf.width;
+ left = pipe->partition->wpf.left;
+ }
vsp1_wpf_write(wpf, dlb, VI6_WPF_HSZCLIP, VI6_WPF_SZCLIP_EN |
(0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
@@ -386,7 +429,11 @@ static void wpf_configure_partition(struct vsp1_entity *entity,
(0 << VI6_WPF_SZCLIP_OFST_SHIFT) |
(height << VI6_WPF_SZCLIP_SIZE_SHIFT));
- if (pipe->lif)
+ /*
+ * For display pipelines without writeback enabled there's no memory
+ * address to configure, return now.
+ */
+ if (pipe->lif && !wpf->writeback)
return;
/*
@@ -408,13 +455,11 @@ static void wpf_configure_partition(struct vsp1_entity *entity,
flip = wpf->flip.active;
if (flip & BIT(WPF_CTRL_HFLIP) && !wpf->flip.rotate)
- offset = format->width - pipe->partition->wpf.left
- - pipe->partition->wpf.width;
+ offset = format->width - left - width;
else if (flip & BIT(WPF_CTRL_VFLIP) && wpf->flip.rotate)
- offset = format->height - pipe->partition->wpf.left
- - pipe->partition->wpf.width;
+ offset = format->height - left - width;
else
- offset = pipe->partition->wpf.left;
+ offset = left;
for (i = 0; i < format->num_planes; ++i) {
unsigned int hsub = i > 0 ? fmtinfo->hsub : 1;
@@ -436,7 +481,7 @@ static void wpf_configure_partition(struct vsp1_entity *entity,
* image height.
*/
if (wpf->flip.rotate)
- height = pipe->partition->wpf.width;
+ height = width;
else
height = format->height;
@@ -477,6 +522,12 @@ static void wpf_configure_partition(struct vsp1_entity *entity,
vsp1_wpf_write(wpf, dlb, VI6_WPF_DSTM_ADDR_Y, mem.addr[0]);
vsp1_wpf_write(wpf, dlb, VI6_WPF_DSTM_ADDR_C0, mem.addr[1]);
vsp1_wpf_write(wpf, dlb, VI6_WPF_DSTM_ADDR_C1, mem.addr[2]);
+
+ /*
+ * Writeback operates in single-shot mode and lasts for a single frame,
+ * reset the writeback flag to false for the next frame.
+ */
+ wpf->writeback = false;
}
static unsigned int wpf_max_width(struct vsp1_entity *entity,
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-06 08:46:14 +0300