From: Manjunath Hadli <[email protected]> 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 <[email protected]> Signed-off-by: Lad, Prabhakar <[email protected]> --- drivers/media/video/davinci/vpif_display.c | 42 ++++++++++++++++++++++++++-- drivers/media/video/davinci/vpif_display.h | 1 + 2 files changed, 40 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c index 1d0c18a..e0070cd 100644 --- a/drivers/media/video/davinci/vpif_display.c +++ b/drivers/media/video/davinci/vpif_display.c @@ -187,6 +187,24 @@ static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count, return 0; *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; @@ -828,7 +846,7 @@ static int vpif_reqbufs(struct file *file, void *priv, common = &ch->common[index]; - if (common->fmt.type != reqbuf->type) + if (common->fmt.type != reqbuf->type || !vpif_dev) return -EINVAL; if (0 != common->io_usrs) @@ -845,7 +863,7 @@ 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, field, sizeof(struct videobuf_buffer), fh, @@ -1690,9 +1708,9 @@ 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; - err = initialize_vpif(); if (err) { @@ -1747,6 +1765,24 @@ 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_DISPLAY_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_DISPLAY_MAX_DEVICES; j++) { ch = vpif_obj.dev[j]; /* Initialize field of the channel objects */ diff --git a/drivers/media/video/davinci/vpif_display.h b/drivers/media/video/davinci/vpif_display.h index dd4887c..8a311f1 100644 --- a/drivers/media/video/davinci/vpif_display.h +++ b/drivers/media/video/davinci/vpif_display.h @@ -158,6 +158,7 @@ struct vpif_config_params { u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS]; u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS]; + u32 video_limit[VPIF_DISPLAY_NUM_CHANNELS]; u8 min_numbuffers; }; -- 1.7.4.1 _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
