[PATCH 10/11] media: vsp1: Support Interlaced display pipelines

From: Kieran Bingham
Date: Fri Mar 09 2018 - 17:04:40 EST

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Calculate the top and bottom fields for the interlaced frames and
utilise the extended display list command feature to implement the
auto-field operations. This allows the DU to update the VSP2 registers
dynamically based upon the currently processing field.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/vsp1/vsp1_dl.c | 10 +++-
drivers/media/platform/vsp1/vsp1_dl.h | 2 +-
drivers/media/platform/vsp1/vsp1_drm.c | 12 ++++-
drivers/media/platform/vsp1/vsp1_pipe.c | 3 +-
drivers/media/platform/vsp1/vsp1_regs.h | 1 +-
drivers/media/platform/vsp1/vsp1_rpf.c | 72 ++++++++++++++++++++++++--
drivers/media/platform/vsp1/vsp1_rwpf.h | 1 +-
include/media/vsp1.h | 1 +-
8 files changed, 96 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/vsp1/vsp1_dl.c b/drivers/media/platform/vsp1/vsp1_dl.c
index 6d17b8bfa21c..4a079060864b 100644
--- a/drivers/media/platform/vsp1/vsp1_dl.c
+++ b/drivers/media/platform/vsp1/vsp1_dl.c
@@ -886,8 +886,9 @@ void vsp1_dl_list_commit(struct vsp1_dl_list *dl)
* with the frame end interrupt. The function always returns true in header mode
* as display list processing is then not continuous and races never occur.
*/
-bool vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm)
+bool vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm, bool interlaced)
{
+ struct vsp1_device *vsp1 = dlm->vsp1;
bool completed = false;

spin_lock(&dlm->lock);
@@ -912,6 +913,13 @@ bool vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm)
if (vsp1_dl_list_hw_update_pending(dlm))
goto done;

+ if (interlaced) {
+ u32 status = vsp1_read(vsp1, VI6_STATUS);
+
+ if (!(status & VI6_STATUS_FLD_STD(dlm->index)))
+ goto done;
+ }
+
/*
* The device starts processing the queued display list right after the
* frame end interrupt. The display list thus becomes active.
diff --git a/drivers/media/platform/vsp1/vsp1_dl.h b/drivers/media/platform/vsp1/vsp1_dl.h
index 3009912ddefb..24a9fb53223a 100644
--- a/drivers/media/platform/vsp1/vsp1_dl.h
+++ b/drivers/media/platform/vsp1/vsp1_dl.h
@@ -57,7 +57,7 @@ struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1,
unsigned int prealloc);
void vsp1_dlm_destroy(struct vsp1_dl_manager *dlm);
void vsp1_dlm_reset(struct vsp1_dl_manager *dlm);
-bool vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm);
+bool vsp1_dlm_irq_frame_end(struct vsp1_dl_manager *dlm, bool interlaced);
struct vsp1_dl_ext_cmd *vsp1_dlm_get_autofld_cmd(struct vsp1_dl_list *dl);

struct vsp1_dl_list *vsp1_dl_list_get(struct vsp1_dl_manager *dlm);
diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platform/vsp1/vsp1_drm.c
index 0459b970e9da..d7028de053ae 100644
--- a/drivers/media/platform/vsp1/vsp1_drm.c
+++ b/drivers/media/platform/vsp1/vsp1_drm.c
@@ -329,6 +329,7 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
struct vsp1_device *vsp1 = dev_get_drvdata(dev);
struct vsp1_drm_pipeline *drm_pipe = &vsp1->drm->pipe[pipe_index];
const struct vsp1_format_info *fmtinfo;
+ struct vsp1_rwpf *output = drm_pipe->pipe.output;
struct vsp1_rwpf *rpf;

if (rpf_index >= vsp1->info->rpf_count)
@@ -368,6 +369,17 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
return -EINVAL;
}

+ if (!(vsp1_feature(vsp1, VSP1_HAS_EXT_DL)) && cfg->interlaced) {
+ /*
+ * Interlaced support requires extended display lists to
+ * provide the auto-fld feature with the DU.
+ */
+ dev_dbg(vsp1->dev, "Interlaced unsupported on this output\n");
+ return -EINVAL;
+ }
+
+ rpf->interlaced = output->interlaced = cfg->interlaced;
+
rpf->fmtinfo = fmtinfo;
rpf->format.num_planes = fmtinfo->planes;
rpf->format.plane_fmt[0].bytesperline = cfg->pitch;
diff --git a/drivers/media/platform/vsp1/vsp1_pipe.c b/drivers/media/platform/vsp1/vsp1_pipe.c
index fa445b1a2e38..df674b3bb9a0 100644
--- a/drivers/media/platform/vsp1/vsp1_pipe.c
+++ b/drivers/media/platform/vsp1/vsp1_pipe.c
@@ -341,7 +341,8 @@ void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)
* up being postponed by one frame. @completed represents whether the
* active frame was finished or postponed.
*/
- completed = vsp1_dlm_irq_frame_end(pipe->output->dlm);
+ completed = vsp1_dlm_irq_frame_end(pipe->output->dlm,
+ pipe->output->interlaced);

if (pipe->hgo)
vsp1_hgo_frame_end(pipe->hgo);
diff --git a/drivers/media/platform/vsp1/vsp1_regs.h b/drivers/media/platform/vsp1/vsp1_regs.h
index 43ad68ff3167..e2dffbe82809 100644
--- a/drivers/media/platform/vsp1/vsp1_regs.h
+++ b/drivers/media/platform/vsp1/vsp1_regs.h
@@ -31,6 +31,7 @@
#define VI6_SRESET_SRTS(n) (1 << (n))

#define VI6_STATUS 0x0038
+#define VI6_STATUS_FLD_STD(n) (1 << ((n) + 28))
#define VI6_STATUS_SYS_ACT(n) (1 << ((n) + 8))

#define VI6_WPF_IRQ_ENB(n) (0x0048 + (n) * 12)
diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c
index 67f2fb3e0611..51c02a1d40e5 100644
--- a/drivers/media/platform/vsp1/vsp1_rpf.c
+++ b/drivers/media/platform/vsp1/vsp1_rpf.c
@@ -24,6 +24,20 @@
#define RPF_MAX_WIDTH 8190
#define RPF_MAX_HEIGHT 8190

+/* Pre extended display list command data structure */
+struct vsp1_extcmd_auto_fld_body {
+ u32 top_y0;
+ u32 bottom_y0;
+ u32 top_c0;
+ u32 bottom_c0;
+ u32 top_c1;
+ u32 bottom_c1;
+ u32 reserved0;
+ u32 reserved1;
+} __packed;
+
+#define VSP1_DL_EXT_AUTOFLD_INT BIT(1)
+
/* -----------------------------------------------------------------------------
* Device Access
*/
@@ -68,6 +82,14 @@ static void rpf_configure_stream(struct vsp1_entity *entity,
pstride |= format->plane_fmt[1].bytesperline
<< VI6_RPF_SRCM_PSTRIDE_C_SHIFT;

+ /*
+ * pstride has both STRIDE_Y and STRIDE_C, but multiplying the whole
+ * of pstride by 2 is conveniently OK here as we are multiplying both
+ * values.
+ */
+ if (rpf->interlaced)
+ pstride *= 2;
+
vsp1_rpf_write(rpf, dlb, VI6_RPF_SRCM_PSTRIDE, pstride);

/* Format */
@@ -104,6 +126,9 @@ static void rpf_configure_stream(struct vsp1_entity *entity,
top = compose->top;
}

+ if (rpf->interlaced)
+ top /= 2;
+
vsp1_rpf_write(rpf, dlb, VI6_RPF_LOC,
(left << VI6_RPF_LOC_HCOORD_SHIFT) |
(top << VI6_RPF_LOC_VCOORD_SHIFT));
@@ -173,6 +198,31 @@ static void rpf_configure_stream(struct vsp1_entity *entity,

}

+static void vsp1_rpf_configure_autofld(struct vsp1_rwpf *rpf,
+ struct vsp1_dl_ext_cmd *cmd)
+{
+ const struct v4l2_pix_format_mplane *format = &rpf->format;
+ struct vsp1_extcmd_auto_fld_body *auto_fld = cmd->data;
+ u32 offset_y, offset_c;
+
+ /* Re-index our auto_fld to match the current RPF */
+ auto_fld = &auto_fld[rpf->entity.index];
+
+ auto_fld->top_y0 = rpf->mem.addr[0];
+ auto_fld->top_c0 = rpf->mem.addr[1];
+ auto_fld->top_c1 = rpf->mem.addr[2];
+
+ offset_y = format->plane_fmt[0].bytesperline;
+ offset_c = format->plane_fmt[1].bytesperline;
+
+ auto_fld->bottom_y0 = rpf->mem.addr[0] + offset_y;
+ auto_fld->bottom_c0 = rpf->mem.addr[1] + offset_c;
+ auto_fld->bottom_c1 = rpf->mem.addr[2] + offset_c;
+
+ cmd->flags |= VSP1_DL_EXT_AUTOFLD_INT;
+ cmd->flags |= BIT(16 + rpf->entity.index);
+}
+
static void rpf_configure_frame(struct vsp1_entity *entity,
struct vsp1_pipeline *pipe,
struct vsp1_dl_list *dl,
@@ -182,6 +232,7 @@ static void rpf_configure_frame(struct vsp1_entity *entity,
struct vsp1_rwpf *rpf = to_rwpf(&entity->subdev);
struct vsp1_rwpf_memory mem = rpf->mem;
struct vsp1_device *vsp1 = rpf->entity.vsp1;
+ struct vsp1_dl_ext_cmd *cmd;
const struct vsp1_format_info *fmtinfo = rpf->fmtinfo;
const struct v4l2_pix_format_mplane *format = &rpf->format;
struct v4l2_rect crop;
@@ -220,6 +271,11 @@ static void rpf_configure_frame(struct vsp1_entity *entity,
crop.left += pipe->partition->rpf.left;
}

+ if (rpf->interlaced) {
+ crop.height = round_down(crop.height / 2, fmtinfo->vsub);
+ crop.top = round_down(crop.top / 2, fmtinfo->vsub);
+ }
+
vsp1_rpf_write(rpf, dlb, VI6_RPF_SRC_BSIZE,
(crop.width << VI6_RPF_SRC_BSIZE_BHSIZE_SHIFT) |
(crop.height << VI6_RPF_SRC_BSIZE_BVSIZE_SHIFT));
@@ -248,11 +304,21 @@ static void rpf_configure_frame(struct vsp1_entity *entity,
fmtinfo->swap_uv)
swap(mem.addr[1], mem.addr[2]);

- vsp1_rpf_write(rpf, dlb, VI6_RPF_SRCM_ADDR_Y, mem.addr[0]);
- vsp1_rpf_write(rpf, dlb, VI6_RPF_SRCM_ADDR_C0, mem.addr[1]);
- vsp1_rpf_write(rpf, dlb, VI6_RPF_SRCM_ADDR_C1, mem.addr[2]);
+ /*
+ * Interlaced pipelines will use the extended pre-cmd to process
+ * SRCM_ADDR_{Y,C0,C1}
+ */
+ if (rpf->interlaced) {
+ cmd = vsp1_dlm_get_autofld_cmd(dl);
+ vsp1_rpf_configure_autofld(rpf, cmd);
+ } else {
+ vsp1_rpf_write(rpf, dlb, VI6_RPF_SRCM_ADDR_Y, mem.addr[0]);
+ vsp1_rpf_write(rpf, dlb, VI6_RPF_SRCM_ADDR_C0, mem.addr[1]);
+ vsp1_rpf_write(rpf, dlb, VI6_RPF_SRCM_ADDR_C1, mem.addr[2]);
+ }
}

+
static void rpf_partition(struct vsp1_entity *entity,
struct vsp1_pipeline *pipe,
struct vsp1_partition *partition,
diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h
index 58215a7ab631..27ada15e8f00 100644
--- a/drivers/media/platform/vsp1/vsp1_rwpf.h
+++ b/drivers/media/platform/vsp1/vsp1_rwpf.h
@@ -47,6 +47,7 @@ struct vsp1_rwpf {

struct v4l2_pix_format_mplane format;
const struct vsp1_format_info *fmtinfo;
+ bool interlaced;
unsigned int bru_input;

unsigned int alpha;
diff --git a/include/media/vsp1.h b/include/media/vsp1.h
index 68a8abe4fac5..1f7e1dfe0c12 100644
--- a/include/media/vsp1.h
+++ b/include/media/vsp1.h
@@ -49,6 +49,7 @@ struct vsp1_du_atomic_config {
struct v4l2_rect dst;
unsigned int alpha;
unsigned int zpos;
+ bool interlaced;
};

void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index);
--
git-series 0.9.1

Next message: Kieran Bingham: "[PATCH 11/11] drm: rcar-du: Support interlaced video output through vsp1"
Previous message: Kieran Bingham: "[PATCH 09/11] media: vsp1: Provide support for extended command pools"
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