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| author |   Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2017-05-25 00:16:57 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2017-07-29 23:46:56 +0300 |
| commit | 6134148f609810cdd8a16c80151fd19d4ba96720 (patch) | |
| tree | 2c5a16412debe9c64aa8b3addb86670ef6847b41 /drivers/media/platform/vsp1/vsp1_drv.c | |
| parent | v4l: vsp1: Add pipe index argument to the VSP-DU API (diff) | |
| download | linux-dev-6134148f609810cdd8a16c80151fd19d4ba96720.tar.xz linux-dev-6134148f609810cdd8a16c80151fd19d4ba96720.zip | |
v4l: vsp1: Add support for the BRS entity
The Blend/ROP Sub Unit (BRS) is a stripped-down version of the BRU found
in several VSP2 instances. Compared to a regular BRU, it supports two
inputs only, and thus has no ROP unit.
Add support for the BRS by modelling it as a new entity type, but reuse
the vsp1_bru object underneath. Chaining the BRU and BRS entities seems
to be supported by the hardware but isn't implemented yet as it isn't
the primary use case for the BRS.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_drv.c')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_drv.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 5a467b118a1c..6a9aeb71aedf 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -84,6 +84,10 @@ static irqreturn_t vsp1_irq_handler(int irq, void *data) * * - from a UDS to a UDS (UDS entities can't be chained) * - from an entity to itself (no loops are allowed) + * + * Furthermore, the BRS can't be connected to histogram generators, but no + * special check is currently needed as all VSP instances that include a BRS + * have no histogram generator. */ static int vsp1_create_sink_links(struct vsp1_device *vsp1, struct vsp1_entity *sink) @@ -261,8 +265,18 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) } /* Instantiate all the entities. */ + if (vsp1->info->features & VSP1_HAS_BRS) { + vsp1->brs = vsp1_bru_create(vsp1, VSP1_ENTITY_BRS); + if (IS_ERR(vsp1->brs)) { + ret = PTR_ERR(vsp1->brs); + goto done; + } + + list_add_tail(&vsp1->brs->entity.list_dev, &vsp1->entities); + } + if (vsp1->info->features & VSP1_HAS_BRU) { - vsp1->bru = vsp1_bru_create(vsp1); + vsp1->bru = vsp1_bru_create(vsp1, VSP1_ENTITY_BRU); if (IS_ERR(vsp1->bru)) { ret = PTR_ERR(vsp1->bru); goto done; @@ -502,6 +516,9 @@ static int vsp1_device_init(struct vsp1_device *vsp1) vsp1_write(vsp1, VI6_DPR_HSI_ROUTE, VI6_DPR_NODE_UNUSED); vsp1_write(vsp1, VI6_DPR_BRU_ROUTE, VI6_DPR_NODE_UNUSED); + if (vsp1->info->features & VSP1_HAS_BRS) + vsp1_write(vsp1, VI6_DPR_ILV_BRS_ROUTE, VI6_DPR_NODE_UNUSED); + vsp1_write(vsp1, VI6_DPR_HGO_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) | (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT)); vsp1_write(vsp1, VI6_DPR_HGT_SMPPT, (7 << VI6_DPR_SMPPT_TGW_SHIFT) | |