From e72b7359be18b9c488ed51a653cd51dfa793b67d Mon Sep 17 00:00:00 2001 From: Niklas Söderlund Date: Tue, 10 Dec 2019 03:05:58 +0100 Subject: media: rcar-vin: Move hardware buffer tracking to own struct MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit To support SEQ_TB/BT not all buffers given to the hardware will be equal, the driver needs to keep track of different buffer types. Move the tracking of buffers given to hardware into a struct so additional tracking fields can be associated with each buffer. [hverkuil: fix small checkpatch warning] Signed-off-by: Niklas Söderlund Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/rcar-vin/rcar-dma.c | 27 ++++++++++++++------------- drivers/media/platform/rcar-vin/rcar-vin.h | 9 +++++---- 2 files changed, 19 insertions(+), 17 deletions(-) (limited to 'drivers') diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c index cf9029efeb04..62dee0777371 100644 --- a/drivers/media/platform/rcar-vin/rcar-dma.c +++ b/drivers/media/platform/rcar-vin/rcar-dma.c @@ -844,20 +844,20 @@ static void rvin_fill_hw_slot(struct rvin_dev *vin, int slot) dma_addr_t phys_addr; /* A already populated slot shall never be overwritten. */ - if (WARN_ON(vin->queue_buf[slot] != NULL)) + if (WARN_ON(vin->buf_hw[slot].buffer)) return; vin_dbg(vin, "Filling HW slot: %d\n", slot); if (list_empty(&vin->buf_list)) { - vin->queue_buf[slot] = NULL; + vin->buf_hw[slot].buffer = NULL; phys_addr = vin->scratch_phys; } else { /* Keep track of buffer we give to HW */ buf = list_entry(vin->buf_list.next, struct rvin_buffer, list); vbuf = &buf->vb; list_del_init(to_buf_list(vbuf)); - vin->queue_buf[slot] = vbuf; + vin->buf_hw[slot].buffer = vbuf; /* Setup DMA */ phys_addr = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0); @@ -953,13 +953,14 @@ static irqreturn_t rvin_irq(int irq, void *data) } /* Capture frame */ - if (vin->queue_buf[slot]) { - vin->queue_buf[slot]->field = rvin_get_active_field(vin, vnms); - vin->queue_buf[slot]->sequence = vin->sequence; - vin->queue_buf[slot]->vb2_buf.timestamp = ktime_get_ns(); - vb2_buffer_done(&vin->queue_buf[slot]->vb2_buf, + if (vin->buf_hw[slot].buffer) { + vin->buf_hw[slot].buffer->field = + rvin_get_active_field(vin, vnms); + vin->buf_hw[slot].buffer->sequence = vin->sequence; + vin->buf_hw[slot].buffer->vb2_buf.timestamp = ktime_get_ns(); + vb2_buffer_done(&vin->buf_hw[slot].buffer->vb2_buf, VB2_BUF_STATE_DONE); - vin->queue_buf[slot] = NULL; + vin->buf_hw[slot].buffer = NULL; } else { /* Scratch buffer was used, dropping frame. */ vin_dbg(vin, "Dropping frame %u\n", vin->sequence); @@ -983,10 +984,10 @@ static void return_all_buffers(struct rvin_dev *vin, int i; for (i = 0; i < HW_BUFFER_NUM; i++) { - if (vin->queue_buf[i]) { - vb2_buffer_done(&vin->queue_buf[i]->vb2_buf, + if (vin->buf_hw[i].buffer) { + vb2_buffer_done(&vin->buf_hw[i].buffer->vb2_buf, state); - vin->queue_buf[i] = NULL; + vin->buf_hw[i].buffer = NULL; } } @@ -1291,7 +1292,7 @@ int rvin_dma_register(struct rvin_dev *vin, int irq) vin->state = STOPPED; for (i = 0; i < HW_BUFFER_NUM; i++) - vin->queue_buf[i] = NULL; + vin->buf_hw[i].buffer = NULL; /* buffer queue */ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h index a36b0824f81d..0aa904a4af5b 100644 --- a/drivers/media/platform/rcar-vin/rcar-vin.h +++ b/drivers/media/platform/rcar-vin/rcar-vin.h @@ -164,9 +164,8 @@ struct rvin_info { * @scratch: cpu address for scratch buffer * @scratch_phys: physical address of the scratch buffer * - * @qlock: protects @queue_buf, @buf_list, @sequence - * @state - * @queue_buf: Keeps track of buffers given to HW slot + * @qlock: protects @buf_hw, @buf_list, @sequence and @state + * @buf_hw: Keeps track of buffers given to HW slot * @buf_list: list of queued buffers * @sequence: V4L2 buffers sequence number * @state: keeps track of operation state @@ -205,7 +204,9 @@ struct rvin_dev { dma_addr_t scratch_phys; spinlock_t qlock; - struct vb2_v4l2_buffer *queue_buf[HW_BUFFER_NUM]; + struct { + struct vb2_v4l2_buffer *buffer; + } buf_hw[HW_BUFFER_NUM]; struct list_head buf_list; unsigned int sequence; enum rvin_dma_state state; -- cgit