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[media] s5p-g2d: Add HFLIP and VFLIP support 

Add support for flipping the image horizontally and vertically.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sachin Kamat 2012-02-16 10:52:16 -03:00 committed by Mauro Carvalho Chehab
parent eb732518e0
commit d0d2832658
3 changed files with 29 additions and 7 deletions
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5
drivers/media/video/s5p-g2d/g2d-hw.c
View File

@ -77,6 +77,11 @@ void g2d_set_rop4(struct g2d_dev *d, u32 r)
w(r, ROP4_REG);
}
void g2d_set_flip(struct g2d_dev *d, u32 r)
{
w(r, SRC_MSK_DIRECT_REG);
}
u32 g2d_cmd_stretch(u32 e)
{
e &= 1;

27
drivers/media/video/s5p-g2d/g2d.c
View File

@ -185,6 +185,11 @@ static int g2d_s_ctrl(struct v4l2_ctrl *ctrl)
else
ctx->rop = ROP4_COPY;
break;
case V4L2_CID_HFLIP:
ctx->flip = ctx->ctrl_hflip->val | (ctx->ctrl_vflip->val << 1);
break;
default:
v4l2_err(&ctx->dev->v4l2_dev, "unknown control\n");
return -EINVAL;
@ -200,11 +205,13 @@ int g2d_setup_ctrls(struct g2d_ctx *ctx)
{
struct g2d_dev *dev = ctx->dev;
v4l2_ctrl_handler_init(&ctx->ctrl_handler, 1);
if (ctx->ctrl_handler.error) {
v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
return ctx->ctrl_handler.error;
}
v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
ctx->ctrl_hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &g2d_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std_menu(
&ctx->ctrl_handler,
@ -215,10 +222,14 @@ int g2d_setup_ctrls(struct g2d_ctx *ctx)
V4L2_COLORFX_NONE);
if (ctx->ctrl_handler.error) {
v4l2_err(&dev->v4l2_dev, "v4l2_ctrl_handler_init failed\n");
return ctx->ctrl_handler.error;
int err = ctx->ctrl_handler.error;
v4l2_err(&dev->v4l2_dev, "g2d_setup_ctrls failed\n");
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
return err;
}
v4l2_ctrl_cluster(2, &ctx->ctrl_hflip);
return 0;
}
@ -564,6 +575,8 @@ static void device_run(void *prv)
g2d_set_dst_addr(dev, vb2_dma_contig_plane_dma_addr(dst, 0));
g2d_set_rop4(dev, ctx->rop);
g2d_set_flip(dev, ctx->flip);
if (ctx->in.c_width != ctx->out.c_width ||
ctx->in.c_height != ctx->out.c_height)
cmd |= g2d_cmd_stretch(1);

4
drivers/media/video/s5p-g2d/g2d.h
View File

@ -57,8 +57,11 @@ struct g2d_ctx {
struct v4l2_m2m_ctx *m2m_ctx;
struct g2d_frame in;
struct g2d_frame out;
struct v4l2_ctrl *ctrl_hflip;
struct v4l2_ctrl *ctrl_vflip;
struct v4l2_ctrl_handler ctrl_handler;
u32 rop;
u32 flip;
};
struct g2d_fmt {
@ -77,6 +80,7 @@ void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a);
void g2d_start(struct g2d_dev *d);
void g2d_clear_int(struct g2d_dev *d);
void g2d_set_rop4(struct g2d_dev *d, u32 r);
void g2d_set_flip(struct g2d_dev *d, u32 r);
u32 g2d_cmd_stretch(u32 e);
void g2d_set_cmd(struct g2d_dev *d, u32 c);