From 764af39aa415c9418f035d2a4bd606d7a7814a68 Mon Sep 17 00:00:00 2001 From: Manjunath Hadli Date: Fri, 13 Apr 2012 04:49:34 -0300 Subject: [PATCH] [media] davinci: vpif capture: size up the memory for the buffers from the buffer pool Size up the memory for the buffers from the buffer pool allocated in board file. Then adjust the reqbuf count depending the available memory. Signed-off-by: Manjunath Hadli Signed-off-by: Lad, Prabhakar Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/davinci/vpif_capture.c | 39 ++++++++++++++++++++-- drivers/media/video/davinci/vpif_capture.h | 1 + 2 files changed, 38 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c index bce31ea55dc4..d126fb6d74b6 100644 --- a/drivers/media/video/davinci/vpif_capture.c +++ b/drivers/media/video/davinci/vpif_capture.c @@ -217,6 +217,23 @@ static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count, /* Calculate the size of the buffer */ *size = config_params.channel_bufsize[ch->channel_id]; + /* + * Checking if the buffer size exceeds the available buffer + * ycmux_mode = 0 means 1 channel mode HD and + * ycmux_mode = 1 means 2 channels mode SD + */ + if (ch->vpifparams.std_info.ycmux_mode == 0) { + if (config_params.video_limit[ch->channel_id]) + while (*size * *count > (config_params.video_limit[0] + + config_params.video_limit[1])) + (*count)--; + } else { + if (config_params.video_limit[ch->channel_id]) + while (*size * *count > + config_params.video_limit[ch->channel_id]) + (*count)--; + } + if (*count < config_params.min_numbuffers) *count = config_params.min_numbuffers; return 0; @@ -890,7 +907,7 @@ static int vpif_reqbufs(struct file *file, void *priv, } } - if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type) + if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type || !vpif_dev) return -EINVAL; index = VPIF_VIDEO_INDEX; @@ -902,7 +919,7 @@ static int vpif_reqbufs(struct file *file, void *priv, /* Initialize videobuf queue as per the buffer type */ videobuf_queue_dma_contig_init(&common->buffer_queue, - &video_qops, NULL, + &video_qops, vpif_dev, &common->irqlock, reqbuf->type, common->fmt.fmt.pix.field, @@ -2171,6 +2188,7 @@ static __init int vpif_probe(struct platform_device *pdev) struct video_device *vfd; struct resource *res; int subdev_count; + size_t size; vpif_dev = &pdev->dev; @@ -2225,6 +2243,23 @@ static __init int vpif_probe(struct platform_device *pdev) ch->video_dev = vfd; } + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res) { + size = resource_size(res); + /* The resources are divided into two equal memory and when we + * have HD output we can add them together + */ + for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { + ch = vpif_obj.dev[j]; + ch->channel_id = j; + /* only enabled if second resource exists */ + config_params.video_limit[ch->channel_id] = 0; + if (size) + config_params.video_limit[ch->channel_id] = + size/2; + } + } + for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) { ch = vpif_obj.dev[j]; ch->channel_id = j; diff --git a/drivers/media/video/davinci/vpif_capture.h b/drivers/media/video/davinci/vpif_capture.h index a693d4ebda55..8095910f02c1 100644 --- a/drivers/media/video/davinci/vpif_capture.h +++ b/drivers/media/video/davinci/vpif_capture.h @@ -151,6 +151,7 @@ struct vpif_config_params { u32 min_bufsize[VPIF_CAPTURE_NUM_CHANNELS]; u32 channel_bufsize[VPIF_CAPTURE_NUM_CHANNELS]; u8 default_device[VPIF_CAPTURE_NUM_CHANNELS]; + u32 video_limit[VPIF_CAPTURE_NUM_CHANNELS]; u8 max_device_type; }; /* Struct which keeps track of the line numbers for the sliced vbi service */ -- 2.30.2