From 844cc0dcb588ee7005c70cffd92ee7a0c1270729 Mon Sep 17 00:00:00 2001 From: Vaibhav Hiremath Date: Sat, 27 Mar 2010 09:37:23 -0300 Subject: [PATCH] V4L/DVB: V4L: vpfe_capture: Add support for USERPTR mode of operation Signed-off-by: Vaibhav Hiremath Signed-off-by: Muralidharan Karicheri Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/davinci/vpfe_capture.c | 42 ++++++++++++++-------- 1 file changed, 28 insertions(+), 14 deletions(-) diff --git a/drivers/media/video/davinci/vpfe_capture.c b/drivers/media/video/davinci/vpfe_capture.c index 2b906753f13c..d4676ad41f39 100644 --- a/drivers/media/video/davinci/vpfe_capture.c +++ b/drivers/media/video/davinci/vpfe_capture.c @@ -539,6 +539,16 @@ static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe_dev) list_del(&vpfe_dev->next_frm->queue); vpfe_dev->next_frm->state = VIDEOBUF_ACTIVE; addr = videobuf_to_dma_contig(vpfe_dev->next_frm); + + ccdc_dev->hw_ops.setfbaddr(addr); +} + +static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe_dev) +{ + unsigned long addr; + + addr = videobuf_to_dma_contig(vpfe_dev->cur_frm); + addr += vpfe_dev->field_off; ccdc_dev->hw_ops.setfbaddr(addr); } @@ -559,7 +569,6 @@ static irqreturn_t vpfe_isr(int irq, void *dev_id) { struct vpfe_device *vpfe_dev = dev_id; enum v4l2_field field; - unsigned long addr; int fid; v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "\nStarting vpfe_isr...\n"); @@ -604,10 +613,7 @@ static irqreturn_t vpfe_isr(int irq, void *dev_id) * the CCDC memory address */ if (field == V4L2_FIELD_SEQ_TB) { - addr = - videobuf_to_dma_contig(vpfe_dev->cur_frm); - addr += vpfe_dev->field_off; - ccdc_dev->hw_ops.setfbaddr(addr); + vpfe_schedule_bottom_field(vpfe_dev); } goto clear_intr; } @@ -1234,7 +1240,10 @@ static int vpfe_videobuf_setup(struct videobuf_queue *vq, struct vpfe_device *vpfe_dev = fh->vpfe_dev; v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_setup\n"); - *size = config_params.device_bufsize; + *size = vpfe_dev->fmt.fmt.pix.sizeimage; + if (vpfe_dev->memory == V4L2_MEMORY_MMAP && + vpfe_dev->fmt.fmt.pix.sizeimage > config_params.device_bufsize) + *size = config_params.device_bufsize; if (*count < config_params.min_numbuffers) *count = config_params.min_numbuffers; @@ -1249,6 +1258,8 @@ static int vpfe_videobuf_prepare(struct videobuf_queue *vq, { struct vpfe_fh *fh = vq->priv_data; struct vpfe_device *vpfe_dev = fh->vpfe_dev; + unsigned long addr; + int ret; v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_buffer_prepare\n"); @@ -1258,8 +1269,18 @@ static int vpfe_videobuf_prepare(struct videobuf_queue *vq, vb->height = vpfe_dev->fmt.fmt.pix.height; vb->size = vpfe_dev->fmt.fmt.pix.sizeimage; vb->field = field; + + ret = videobuf_iolock(vq, vb, NULL);; + if (ret < 0) + return ret; + + addr = videobuf_to_dma_contig(vb); + /* Make sure user addresses are aligned to 32 bytes */ + if (!ALIGN(addr, 32)) + return -EINVAL; + + vb->state = VIDEOBUF_PREPARED; } - vb->state = VIDEOBUF_PREPARED; return 0; } @@ -1327,13 +1348,6 @@ static int vpfe_reqbufs(struct file *file, void *priv, return -EINVAL; } - if (V4L2_MEMORY_USERPTR == req_buf->memory) { - /* we don't support user ptr IO */ - v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_reqbufs:" - " USERPTR IO not supported\n"); - return -EINVAL; - } - ret = mutex_lock_interruptible(&vpfe_dev->lock); if (ret) return ret; -- 2.20.1