diff options
| -rw-r--r-- | Documentation/media/v4l-drivers/vivid.rst | 8 | ||||
| -rw-r--r-- | drivers/media/platform/vivid/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/media/platform/vivid/vivid-core.c | 32 |
3 files changed, 37 insertions, 5 deletions
diff --git a/Documentation/media/v4l-drivers/vivid.rst b/Documentation/media/v4l-drivers/vivid.rst index c8cf371e8bb9..3e44b2217f2d 100644 --- a/Documentation/media/v4l-drivers/vivid.rst +++ b/Documentation/media/v4l-drivers/vivid.rst @@ -263,6 +263,14 @@ all configurable using the following module options: removed. Unless overridden by ccs_cap_mode and/or ccs_out_mode the will default to enabling crop, compose and scaling. +- allocators: + + memory allocator selection, default is 0. It specifies the way buffers + will be allocated. + + - 0: vmalloc + - 1: dma-contig + Taken together, all these module options allow you to precisely customize the driver behavior and test your application with all sorts of permutations. It is also very suitable to emulate hardware that is not yet available, e.g. diff --git a/drivers/media/platform/vivid/Kconfig b/drivers/media/platform/vivid/Kconfig index db0dd19d227a..94ab1364a792 100644 --- a/drivers/media/platform/vivid/Kconfig +++ b/drivers/media/platform/vivid/Kconfig @@ -1,6 +1,7 @@ config VIDEO_VIVID tristate "Virtual Video Test Driver" depends on VIDEO_DEV && VIDEO_V4L2 && !SPARC32 && !SPARC64 && FB + depends on HAS_DMA select FONT_SUPPORT select FONT_8x16 select FB_CFB_FILLRECT @@ -8,6 +9,7 @@ config VIDEO_VIVID select FB_CFB_IMAGEBLIT select MEDIA_CEC_EDID select VIDEOBUF2_VMALLOC + select VIDEOBUF2_DMA_CONTIG select VIDEO_V4L2_TPG default n ---help--- diff --git a/drivers/media/platform/vivid/vivid-core.c b/drivers/media/platform/vivid/vivid-core.c index 51e37812ec98..ef344b9a48af 100644 --- a/drivers/media/platform/vivid/vivid-core.c +++ b/drivers/media/platform/vivid/vivid-core.c @@ -30,6 +30,7 @@ #include <linux/videodev2.h> #include <linux/v4l2-dv-timings.h> #include <media/videobuf2-vmalloc.h> +#include <media/videobuf2-dma-contig.h> #include <media/v4l2-dv-timings.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-fh.h> @@ -151,6 +152,12 @@ static bool no_error_inj; module_param(no_error_inj, bool, 0444); MODULE_PARM_DESC(no_error_inj, " if set disable the error injecting controls"); +static unsigned int allocators[VIVID_MAX_DEVS] = { [0 ... (VIVID_MAX_DEVS - 1)] = 0 }; +module_param_array(allocators, uint, NULL, 0444); +MODULE_PARM_DESC(allocators, " memory allocator selection, default is 0.\n" + "\t\t 0 == vmalloc\n" + "\t\t 1 == dma-contig"); + static struct vivid_dev *vivid_devs[VIVID_MAX_DEVS]; const struct v4l2_rect vivid_min_rect = { @@ -636,6 +643,10 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) { static const struct v4l2_dv_timings def_dv_timings = V4L2_DV_BT_CEA_1280X720P60; + static const struct vb2_mem_ops * const vivid_mem_ops[2] = { + &vb2_vmalloc_memops, + &vb2_dma_contig_memops, + }; unsigned in_type_counter[4] = { 0, 0, 0, 0 }; unsigned out_type_counter[4] = { 0, 0, 0, 0 }; int ccs_cap = ccs_cap_mode[inst]; @@ -646,6 +657,7 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) struct video_device *vfd; struct vb2_queue *q; unsigned node_type = node_types[inst]; + unsigned int allocator = allocators[inst]; v4l2_std_id tvnorms_cap = 0, tvnorms_out = 0; int ret; int i; @@ -1039,6 +1051,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) goto unreg_dev; } + if (allocator == 1) + dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + else if (allocator >= ARRAY_SIZE(vivid_mem_ops)) + allocator = 0; + /* start creating the vb2 queues */ if (dev->has_vid_cap) { /* initialize vid_cap queue */ @@ -1049,10 +1066,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) q->drv_priv = dev; q->buf_struct_size = sizeof(struct vivid_buffer); q->ops = &vivid_vid_cap_qops; - q->mem_ops = &vb2_vmalloc_memops; + q->mem_ops = vivid_mem_ops[allocator]; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->min_buffers_needed = 2; q->lock = &dev->mutex; + q->dev = dev->v4l2_dev.dev; ret = vb2_queue_init(q); if (ret) @@ -1068,10 +1086,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) q->drv_priv = dev; q->buf_struct_size = sizeof(struct vivid_buffer); q->ops = &vivid_vid_out_qops; - q->mem_ops = &vb2_vmalloc_memops; + q->mem_ops = vivid_mem_ops[allocator]; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->min_buffers_needed = 2; q->lock = &dev->mutex; + q->dev = dev->v4l2_dev.dev; ret = vb2_queue_init(q); if (ret) @@ -1087,10 +1106,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) q->drv_priv = dev; q->buf_struct_size = sizeof(struct vivid_buffer); q->ops = &vivid_vbi_cap_qops; - q->mem_ops = &vb2_vmalloc_memops; + q->mem_ops = vivid_mem_ops[allocator]; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->min_buffers_needed = 2; q->lock = &dev->mutex; + q->dev = dev->v4l2_dev.dev; ret = vb2_queue_init(q); if (ret) @@ -1106,10 +1126,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) q->drv_priv = dev; q->buf_struct_size = sizeof(struct vivid_buffer); q->ops = &vivid_vbi_out_qops; - q->mem_ops = &vb2_vmalloc_memops; + q->mem_ops = vivid_mem_ops[allocator]; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->min_buffers_needed = 2; q->lock = &dev->mutex; + q->dev = dev->v4l2_dev.dev; ret = vb2_queue_init(q); if (ret) @@ -1124,10 +1145,11 @@ static int vivid_create_instance(struct platform_device *pdev, int inst) q->drv_priv = dev; q->buf_struct_size = sizeof(struct vivid_buffer); q->ops = &vivid_sdr_cap_qops; - q->mem_ops = &vb2_vmalloc_memops; + q->mem_ops = vivid_mem_ops[allocator]; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->min_buffers_needed = 8; q->lock = &dev->mutex; + q->dev = dev->v4l2_dev.dev; ret = vb2_queue_init(q); if (ret) |