Hi Kieran,
Thank you for the patch.
On Thursday, 3 May 2018 16:36:18 EEST Kieran Bingham wrote:
> Header mode display lists are now supported on all WPF outputs. To
> support extended headers and auto-fld capabilities for interlaced mode
> handling only header mode display lists can be used.
>
> Disable the headerless display list configuration, and remove the dead
> code.
>
> Signed-off-by: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>
> ---
> drivers/media/platform/vsp1/vsp1_dl.c | 107 ++++++---------------------
> 1 file changed, 27 insertions(+), 80 deletions(-)
I like the diffstat.
> diff --git a/drivers/media/platform/vsp1/vsp1_dl.c
> b/drivers/media/platform/vsp1/vsp1_dl.c index fbffbd407b29..56514cd51c51
> 100644
> --- a/drivers/media/platform/vsp1/vsp1_dl.c
> +++ b/drivers/media/platform/vsp1/vsp1_dl.c
> @@ -94,7 +94,7 @@ struct vsp1_dl_body_pool {
> * struct vsp1_dl_list - Display list
> * @list: entry in the display list manager lists
> * @dlm: the display list manager
> - * @header: display list header, NULL for headerless lists
> + * @header: display list header
> * @dma: DMA address for the header
> * @body0: first display list body
> * @bodies: list of extra display list bodies
> @@ -118,15 +118,9 @@ struct vsp1_dl_list {
> bool internal;
> };
>
> -enum vsp1_dl_mode {
> - VSP1_DL_MODE_HEADER,
> - VSP1_DL_MODE_HEADERLESS,
> -};
> -
> /**
> * struct vsp1_dl_manager - Display List manager
> * @index: index of the related WPF
> - * @mode: display list operation mode (header or headerless)
> * @singleshot: execute the display list in single-shot mode
> * @vsp1: the VSP1 device
> * @lock: protects the free, active, queued, and pending lists
> @@ -138,7 +132,6 @@ enum vsp1_dl_mode {
> */
> struct vsp1_dl_manager {
> unsigned int index;
> - enum vsp1_dl_mode mode;
> bool singleshot;
> struct vsp1_device *vsp1;
>
> @@ -318,6 +311,7 @@ void vsp1_dl_body_write(struct vsp1_dl_body *dlb, u32
> reg, u32 data) static struct vsp1_dl_list *vsp1_dl_list_alloc(struct
> vsp1_dl_manager *dlm) {
> struct vsp1_dl_list *dl;
> + size_t header_offset;
>
> dl = kzalloc(sizeof(*dl), GFP_KERNEL);
> if (!dl)
> @@ -330,16 +324,15 @@ static struct vsp1_dl_list *vsp1_dl_list_alloc(struct
> vsp1_dl_manager *dlm) dl->body0 = vsp1_dl_body_get(dlm->pool);
> if (!dl->body0)
> return NULL;
> - if (dlm->mode == VSP1_DL_MODE_HEADER) {
> - size_t header_offset = dl->body0->max_entries
> - * sizeof(*dl->body0->entries);
>
> - dl->header = ((void *)dl->body0->entries) + header_offset;
> - dl->dma = dl->body0->dma + header_offset;
> + header_offset = dl->body0->max_entries
> + * sizeof(*dl->body0->entries);
Nitpicking, please align * under =.
>
> - memset(dl->header, 0, sizeof(*dl->header));
> - dl->header->lists[0].addr = dl->body0->dma;
> - }
> + dl->header = ((void *)dl->body0->entries) + header_offset;
> + dl->dma = dl->body0->dma + header_offset;
> +
> + memset(dl->header, 0, sizeof(*dl->header));
> + dl->header->lists[0].addr = dl->body0->dma;
>
> return dl;
> }
> @@ -471,16 +464,9 @@ struct vsp1_dl_body *vsp1_dl_list_get_body0(struct
> vsp1_dl_list *dl) *
> * The reference must be explicitly released by a call to
> vsp1_dl_body_put() * when the body isn't needed anymore.
> - *
> - * Additional bodies are only usable for display lists in header mode.
> - * Attempting to add a body to a header-less display list will return an
> error. */
> int vsp1_dl_list_add_body(struct vsp1_dl_list *dl, struct vsp1_dl_body
> *dlb) {
> - /* Multi-body lists are only available in header mode. */
> - if (dl->dlm->mode != VSP1_DL_MODE_HEADER)
> - return -EINVAL;
> -
> refcount_inc(&dlb->refcnt);
>
> list_add_tail(&dlb->list, &dl->bodies);
> @@ -501,17 +487,10 @@ int vsp1_dl_list_add_body(struct vsp1_dl_list *dl,
> struct vsp1_dl_body *dlb) * Adding a display list to a chain passes
> ownership of the display list to * the head display list item. The chain is
> released when the head dl item is * put back with __vsp1_dl_list_put().
> - *
> - * Chained display lists are only usable in header mode. Attempts to add a
> - * display list to a chain in header-less mode will return an error.
> */
> int vsp1_dl_list_add_chain(struct vsp1_dl_list *head,
> struct vsp1_dl_list *dl)
> {
> - /* Chained lists are only available in header mode. */
> - if (head->dlm->mode != VSP1_DL_MODE_HEADER)
> - return -EINVAL;
> -
> head->has_chain = true;
> list_add_tail(&dl->chain, &head->chain);
> return 0;
> @@ -579,17 +558,10 @@ static bool vsp1_dl_list_hw_update_pending(struct
> vsp1_dl_manager *dlm) return false;
>
> /*
> - * Check whether the VSP1 has taken the update. In headerless mode the
> - * hardware indicates this by clearing the UPD bit in the DL_BODY_SIZE
> - * register, and in header mode by clearing the UPDHDR bit in the CMD
> - * register.
> + * Check whether the VSP1 has taken the update. In header mode by
> + * clearing the UPDHDR bit in the CMD register.
I'd write this
* Check whether the VSP1 has taken the update. The hardware indicates
* this by clearing the UPDHDR bit in the CMD register.
> */
> - if (dlm->mode == VSP1_DL_MODE_HEADERLESS)
> - return !!(vsp1_read(vsp1, VI6_DL_BODY_SIZE)
> - & VI6_DL_BODY_SIZE_UPD);
> - else
> - return !!(vsp1_read(vsp1, VI6_CMD(dlm->index))
> - & VI6_CMD_UPDHDR);
> + return !!(vsp1_read(vsp1, VI6_CMD(dlm->index)) & VI6_CMD_UPDHDR);
> }
>
> static void vsp1_dl_list_hw_enqueue(struct vsp1_dl_list *dl)
> @@ -597,26 +569,14 @@ static void vsp1_dl_list_hw_enqueue(struct
> vsp1_dl_list *dl) struct vsp1_dl_manager *dlm = dl->dlm;
> struct vsp1_device *vsp1 = dlm->vsp1;
>
> - if (dlm->mode == VSP1_DL_MODE_HEADERLESS) {
> - /*
> - * In headerless mode, program the hardware directly with the
> - * display list body address and size and set the UPD bit. The
> - * bit will be cleared by the hardware when the display list
> - * processing starts.
> - */
> - vsp1_write(vsp1, VI6_DL_HDR_ADDR(0), dl->body0->dma);
> - vsp1_write(vsp1, VI6_DL_BODY_SIZE, VI6_DL_BODY_SIZE_UPD |
> - (dl->body0->num_entries * sizeof(*dl->header->lists)));
> - } else {
> - /*
> - * In header mode, program the display list header address. If
> - * the hardware is idle (single-shot mode or first frame in
> - * continuous mode) it will then be started independently. If
> - * the hardware is operating, the VI6_DL_HDR_REF_ADDR register
> - * will be updated with the display list address.
> - */
> - vsp1_write(vsp1, VI6_DL_HDR_ADDR(dlm->index), dl->dma);
> - }
> + /*
> + * In header mode, program the display list header address. If
s/In header mode, program/Program/
You can also reformat the comment block to reach the 80th column.
> + * the hardware is idle (single-shot mode or first frame in
> + * continuous mode) it will then be started independently. If
> + * the hardware is operating, the VI6_DL_HDR_REF_ADDR register
> + * will be updated with the display list address.
> + */
> + vsp1_write(vsp1, VI6_DL_HDR_ADDR(dlm->index), dl->dma);
> }
>
> static void vsp1_dl_list_commit_continuous(struct vsp1_dl_list *dl)
> @@ -674,15 +634,13 @@ void vsp1_dl_list_commit(struct vsp1_dl_list *dl, bool
> internal) struct vsp1_dl_list *dl_next;
> unsigned long flags;
>
> - if (dlm->mode == VSP1_DL_MODE_HEADER) {
> - /* Fill the header for the head and chained display lists. */
> - vsp1_dl_list_fill_header(dl, list_empty(&dl->chain));
> + /* Fill the header for the head and chained display lists. */
> + vsp1_dl_list_fill_header(dl, list_empty(&dl->chain));
>
> - list_for_each_entry(dl_next, &dl->chain, chain) {
> - bool last = list_is_last(&dl_next->chain, &dl->chain);
> + list_for_each_entry(dl_next, &dl->chain, chain) {
> + bool last = list_is_last(&dl_next->chain, &dl->chain);
>
> - vsp1_dl_list_fill_header(dl_next, last);
> - }
> + vsp1_dl_list_fill_header(dl_next, last);
> }
>
> dl->internal = internal;
> @@ -783,13 +741,6 @@ void vsp1_dlm_setup(struct vsp1_device *vsp1)
>
> | VI6_DL_CTRL_DC2 | VI6_DL_CTRL_DC1 | VI6_DL_CTRL_DC0
> | VI6_DL_CTRL_DLE;
>
> - /*
> - * The DRM pipeline operates with display lists in Continuous Frame
> - * Mode, all other pipelines use manual start.
> - */
> - if (vsp1->drm)
> - ctrl |= VI6_DL_CTRL_CFM0 | VI6_DL_CTRL_NH0;
> -
> vsp1_write(vsp1, VI6_DL_CTRL, ctrl);
> vsp1_write(vsp1, VI6_DL_SWAP, VI6_DL_SWAP_LWS);
> }
> @@ -824,8 +775,6 @@ struct vsp1_dl_manager *vsp1_dlm_create(struct
> vsp1_device *vsp1, return NULL;
>
> dlm->index = index;
> - dlm->mode = index == 0 && !vsp1->info->uapi
> - ? VSP1_DL_MODE_HEADERLESS : VSP1_DL_MODE_HEADER;
> dlm->singleshot = vsp1->info->uapi;
> dlm->vsp1 = vsp1;
>
> @@ -834,13 +783,11 @@ struct vsp1_dl_manager *vsp1_dlm_create(struct
> vsp1_device *vsp1,
>
> /*
> * Initialize the display list body and allocate DMA memory for the body
> - * and the optional header. Both are allocated together to avoid memory
> + * and the header. Both are allocated together to avoid memory
> * fragmentation, with the header located right after the body in
> * memory.
> */
> - header_size = dlm->mode == VSP1_DL_MODE_HEADER
> - ? ALIGN(sizeof(struct vsp1_dl_header), 8)
> - : 0;
> + header_size = ALIGN(sizeof(struct vsp1_dl_header), 8);
>
> dlm->pool = vsp1_dl_body_pool_create(vsp1, prealloc,
> VSP1_DL_NUM_ENTRIES, header_size);
While at it, could you update the documentation of the
vsp1_dlm_irq_frame_end() function to s/header mode/single-shot mode/ ?
With these small issues fixed,
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
--
Regards,
Laurent Pinchart
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