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[media] media: ti-vpe: vpdma: Add support for setting max width height

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Add a helper function to be able to set the maximum
VPDMA transfer size to limit potential buffer overrun.

Added enums for max_width and max_height fields of the
outbound data descriptor.

Changed vpdma_add_out_dtd to accept two more arguments
for max width and height.

Make use of different max width & height sets for different
of capture module (i.e. slices).

Signed-off-by: Nikhil Devshatwar <nikhil.nd@ti.com>
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Nikhil Devshatwar
2016-11-18 21:20:21 -02:00
committed by Mauro Carvalho Chehab
parent f43aa420a8
commit 634271f8f6
4 changed files with 62 additions and 44 deletions
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32
drivers/media/platform/ti-vpe/vpdma.h
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@@ -117,6 +117,30 @@ enum vpdma_frame_start_event {
VPDMA_FSEVENT_CHANNEL_ACTIVE,
};
/* max width configurations */
enum vpdma_max_width {
MAX_OUT_WIDTH_UNLIMITED = 0,
MAX_OUT_WIDTH_REG1,
MAX_OUT_WIDTH_REG2,
MAX_OUT_WIDTH_REG3,
MAX_OUT_WIDTH_352,
MAX_OUT_WIDTH_768,
MAX_OUT_WIDTH_1280,
MAX_OUT_WIDTH_1920,
};
/* max height configurations */
enum vpdma_max_height {
MAX_OUT_HEIGHT_UNLIMITED = 0,
MAX_OUT_HEIGHT_REG1,
MAX_OUT_HEIGHT_REG2,
MAX_OUT_HEIGHT_REG3,
MAX_OUT_HEIGHT_288,
MAX_OUT_HEIGHT_576,
MAX_OUT_HEIGHT_720,
MAX_OUT_HEIGHT_1080,
};
/*
* VPDMA channel numbers
*/
@@ -198,11 +222,12 @@ void vpdma_add_sync_on_channel_ctd(struct vpdma_desc_list *list,
void vpdma_add_out_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
enum vpdma_channel chan, u32 flags);
int max_w, int max_h, enum vpdma_channel chan, u32 flags);
void vpdma_rawchan_add_out_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
int raw_vpdma_chan, u32 flags);
int max_w, int max_h, int raw_vpdma_chan, u32 flags);
void vpdma_add_in_dtd(struct vpdma_desc_list *list, int width,
const struct v4l2_rect *c_rect,
const struct vpdma_data_format *fmt, dma_addr_t dma_addr,
@@ -221,6 +246,9 @@ void vpdma_set_line_mode(struct vpdma_data *vpdma, int line_mode,
enum vpdma_channel chan);
void vpdma_set_frame_start_event(struct vpdma_data *vpdma,
enum vpdma_frame_start_event fs_event, enum vpdma_channel chan);
void vpdma_set_max_size(struct vpdma_data *vpdma, int reg_addr,
u32 width, u32 height);
void vpdma_set_bg_color(struct vpdma_data *vpdma,
struct vpdma_data_format *fmt, u32 color);
void vpdma_dump_regs(struct vpdma_data *vpdma);