On Exynos SoCs the FIMC IP allows to configure globally the alpha
color channel for V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_RGB555 and
V4L2_PIX_FMT_RGB444 pixel formats. This patch adds a v4l2 control
in order to let the applications control the global alpha value.
The alpha value range depends on the pixel format, for RGB32
it's 0..255, for RGB555 - 0..1 and for RGB444 - 0..7. The v4l2
control range is always 0..255 and the driver will ignore most
significant bits of the alpha value where the alpha channel width
is less than 8 bits. The applications need to match the alpha
channel data width and the pixel format.
An option is added to the variant description data structure
so an additional control is created only where really supported
in hardware.
Signed-off-by: Sylwester Nawrocki <s.nawro...@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
drivers/media/video/s5p-fimc/fimc-capture.c | 4 ++
drivers/media/video/s5p-fimc/fimc-core.c | 49 ++++++++++++++++++++++---
drivers/media/video/s5p-fimc/fimc-core.h | 13 ++++++-
drivers/media/video/s5p-fimc/fimc-reg.c | 53 +++++++++++++++++++++------
drivers/media/video/s5p-fimc/regs-fimc.h | 5 +++
5 files changed, 105 insertions(+), 19 deletions(-)
diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c
b/drivers/media/video/s5p-fimc/fimc-capture.c
index 82d9ab6..70176e5 100644
--- a/drivers/media/video/s5p-fimc/fimc-capture.c
+++ b/drivers/media/video/s5p-fimc/fimc-capture.c
@@ -63,6 +63,8 @@ static int fimc_init_capture(struct fimc_dev *fimc)
fimc_hw_set_effect(ctx, false);
fimc_hw_set_output_path(ctx);
fimc_hw_set_out_dma(ctx);
+ if (fimc->variant->has_alpha)
+ fimc_hw_set_rgb_alpha(ctx);
clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
}
spin_unlock_irqrestore(&fimc->slock, flags);
@@ -154,6 +156,8 @@ int fimc_capture_config_update(struct fimc_ctx *ctx)
fimc_hw_set_rotation(ctx);
fimc_prepare_dma_offset(ctx, &ctx->d_frame);
fimc_hw_set_out_dma(ctx);
+ if (fimc->variant->has_alpha)
+ fimc_hw_set_rgb_alpha(ctx);
clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
}
spin_unlock(&ctx->slock);
diff --git a/drivers/media/video/s5p-fimc/fimc-core.c
b/drivers/media/video/s5p-fimc/fimc-core.c
index 567e9ea..20f9da8 100644
--- a/drivers/media/video/s5p-fimc/fimc-core.c
+++ b/drivers/media/video/s5p-fimc/fimc-core.c
@@ -52,13 +52,29 @@ static struct fimc_fmt fimc_formats[] = {
.colplanes = 1,
.flags = FMT_FLAGS_M2M,
}, {
- .name = "XRGB-8-8-8-8, 32 bpp",
+ .name = "XRGB8888, 32 bpp",
.fourcc = V4L2_PIX_FMT_RGB32,
.depth = { 32 },
.color = S5P_FIMC_RGB888,
.memplanes = 1,
.colplanes = 1,
- .flags = FMT_FLAGS_M2M,
+ .flags = FMT_FLAGS_M2M | FMT_HAS_ALPHA,
+ }, {
+ .name = "ARGB1555",
+ .fourcc = V4L2_PIX_FMT_RGB555,
+ .depth = { 16 },
+ .color = S5P_FIMC_RGB555,
+ .memplanes = 1,
+ .colplanes = 1,
+ .flags = FMT_FLAGS_M2M | FMT_HAS_ALPHA,
+ }, {
+ .name = "ARGB4444",
+ .fourcc = V4L2_PIX_FMT_RGB444,
+ .depth = { 16 },
+ .color = S5P_FIMC_RGB444,
+ .memplanes = 1,
+ .colplanes = 1,
+ .flags = FMT_FLAGS_M2M | FMT_HAS_ALPHA,
}, {
.name = "YUV 4:2:2 packed, YCbYCr",
.fourcc = V4L2_PIX_FMT_YUYV,
@@ -652,8 +668,11 @@ static void fimc_dma_run(void *priv)
if (ctx->state & (FIMC_DST_ADDR | FIMC_PARAMS))
fimc_hw_set_output_addr(fimc, &ctx->d_frame.paddr, -1);
- if (ctx->state & FIMC_PARAMS)
+ if (ctx->state & FIMC_PARAMS) {
fimc_hw_set_out_dma(ctx);
+ if (fimc->variant->has_alpha)
+ fimc_hw_set_rgb_alpha(ctx);
+ }
fimc_activate_capture(ctx);
@@ -790,6 +809,11 @@ static int fimc_s_ctrl(struct v4l2_ctrl *ctrl)
ctx->rotation = ctrl->val;
break;
+ case V4L2_CID_COLOR_ALPHA:
+ spin_lock_irqsave(&ctx->slock, flags);
+ ctx->d_frame.alpha = ctrl->val;
+ break;
+
default:
v4l2_err(fimc->v4l2_dev, "Invalid control: 0x%X\n", ctrl->id);
return -EINVAL;
@@ -806,9 +830,11 @@ static const struct v4l2_ctrl_ops fimc_ctrl_ops = {
int fimc_ctrls_create(struct fimc_ctx *ctx)
{
+ struct samsung_fimc_variant *variant = ctx->fimc_dev->variant;
+
if (ctx->ctrls_rdy)
return 0;
- v4l2_ctrl_handler_init(&ctx->ctrl_handler, 3);
+ v4l2_ctrl_handler_init(&ctx->ctrl_handler, 4);
ctx->ctrl_rotate = v4l2_ctrl_new_std(&ctx->ctrl_handler, &fimc_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
@@ -816,6 +842,14 @@ int fimc_ctrls_create(struct fimc_ctx *ctx)
V4L2_CID_VFLIP, 0, 1, 1, 0);
ctx->ctrl_vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &fimc_ctrl_ops,
V4L2_CID_ROTATE, 0, 270, 90, 0);
+
+ if (variant->has_alpha)
+ ctx->ctrl_alpha = v4l2_ctrl_new_std(&ctx->ctrl_handler,
+ &fimc_ctrl_ops, V4L2_CID_COLOR_ALPHA,
+ 0, 0xff, 1, 0);
+ else
+ ctx->ctrl_alpha = NULL;
+
ctx->ctrls_rdy = ctx->ctrl_handler.error == 0;
return ctx->ctrl_handler.error;
@@ -838,6 +872,8 @@ void fimc_ctrls_activate(struct fimc_ctx *ctx, bool active)
v4l2_ctrl_activate(ctx->ctrl_rotate, active);
v4l2_ctrl_activate(ctx->ctrl_hflip, active);
v4l2_ctrl_activate(ctx->ctrl_vflip, active);
+ if (ctx->ctrl_alpha)
+ v4l2_ctrl_activate(ctx->ctrl_alpha, active);
if (active) {
ctx->rotation = ctx->ctrl_rotate->val;
@@ -1374,6 +1410,8 @@ static int fimc_m2m_open(struct file *file)
if (!ctx)
return -ENOMEM;
v4l2_fh_init(&ctx->fh, fimc->m2m.vfd);
+ ctx->fimc_dev = fimc;
+
ret = fimc_ctrls_create(ctx);
if (ret)
goto error_fh;
@@ -1383,7 +1421,6 @@ static int fimc_m2m_open(struct file *file)
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
- ctx->fimc_dev = fimc;
/* Default color format */
ctx->s_frame.fmt = &fimc_formats[0];
ctx->d_frame.fmt = &fimc_formats[0];
@@ -1892,6 +1929,7 @@ static struct samsung_fimc_variant fimc0_variant_exynos4
= {
.has_cam_if = 1,
.has_cistatus2 = 1,
.has_mainscaler_ext = 1,
+ .has_alpha = 1,
.min_inp_pixsize = 16,
.min_out_pixsize = 16,
.hor_offs_align = 2,
@@ -1905,6 +1943,7 @@ static struct samsung_fimc_variant fimc3_variant_exynos4
= {
.has_cam_if = 1,
.has_cistatus2 = 1,
.has_mainscaler_ext = 1,
+ .has_alpha = 1,
.min_inp_pixsize = 16,
.min_out_pixsize = 16,
.hor_offs_align = 2,
diff --git a/drivers/media/video/s5p-fimc/fimc-core.h
b/drivers/media/video/s5p-fimc/fimc-core.h
index c7f01c4..9d1f669 100644
--- a/drivers/media/video/s5p-fimc/fimc-core.h
+++ b/drivers/media/video/s5p-fimc/fimc-core.h
@@ -85,11 +85,14 @@ enum fimc_datapath {
};
enum fimc_color_fmt {
- S5P_FIMC_RGB565 = 0x10,
+ S5P_FIMC_RGB444 = 0x10,
+ S5P_FIMC_RGB555,
+ S5P_FIMC_RGB565,
S5P_FIMC_RGB666,
S5P_FIMC_RGB888,
S5P_FIMC_RGB30_LOCAL,
S5P_FIMC_YCBCR420 = 0x20,
+ S5P_FIMC_YCBCR422,
S5P_FIMC_YCBYCR422,
S5P_FIMC_YCRYCB422,
S5P_FIMC_CBYCRY422,
@@ -162,6 +165,7 @@ struct fimc_fmt {
u16 flags;
#define FMT_FLAGS_CAM (1 << 0)
#define FMT_FLAGS_M2M (1 << 1)
+#define FMT_HAS_ALPHA (1 << 2)
};
/**
@@ -283,6 +287,7 @@ struct fimc_frame {
struct fimc_addr paddr;
struct fimc_dma_offset dma_offset;
struct fimc_fmt *fmt;
+ u8 alpha;
};
/**
@@ -387,6 +392,7 @@ struct samsung_fimc_variant {
unsigned int has_cistatus2:1;
unsigned int has_mainscaler_ext:1;
unsigned int has_cam_if:1;
+ unsigned int has_alpha:1;
struct fimc_pix_limit *pix_limit;
u16 min_inp_pixsize;
u16 min_out_pixsize;
@@ -482,7 +488,8 @@ struct fimc_dev {
* @ctrl_handler: v4l2 controls handler
* @ctrl_rotate image rotation control
* @ctrl_hflip horizontal flip control
- * @ctrl_vflip vartical flip control
+ * @ctrl_vflip vertical flip control
+ * @ctrl_alpha RGB alpha control
* @ctrls_rdy: true if the control handler is initialized
*/
struct fimc_ctx {
@@ -509,6 +516,7 @@ struct fimc_ctx {
struct v4l2_ctrl *ctrl_rotate;
struct v4l2_ctrl *ctrl_hflip;
struct v4l2_ctrl *ctrl_vflip;
+ struct v4l2_ctrl *ctrl_alpha;
bool ctrls_rdy;
};
@@ -674,6 +682,7 @@ void fimc_hw_set_prescaler(struct fimc_ctx *ctx);
void fimc_hw_set_mainscaler(struct fimc_ctx *ctx);
void fimc_hw_en_capture(struct fimc_ctx *ctx);
void fimc_hw_set_effect(struct fimc_ctx *ctx, bool active);
+void fimc_hw_set_rgb_alpha(struct fimc_ctx *ctx);
void fimc_hw_set_in_dma(struct fimc_ctx *ctx);
void fimc_hw_set_input_path(struct fimc_ctx *ctx);
void fimc_hw_set_output_path(struct fimc_ctx *ctx);
diff --git a/drivers/media/video/s5p-fimc/fimc-reg.c
b/drivers/media/video/s5p-fimc/fimc-reg.c
index 44f5c2d..15466d0 100644
--- a/drivers/media/video/s5p-fimc/fimc-reg.c
+++ b/drivers/media/video/s5p-fimc/fimc-reg.c
@@ -117,7 +117,7 @@ void fimc_hw_set_target_format(struct fimc_ctx *ctx)
S5P_CITRGFMT_VSIZE_MASK);
switch (frame->fmt->color) {
- case S5P_FIMC_RGB565...S5P_FIMC_RGB888:
+ case S5P_FIMC_RGB444...S5P_FIMC_RGB888:
cfg |= S5P_CITRGFMT_RGB;
break;
case S5P_FIMC_YCBCR420:
@@ -175,6 +175,7 @@ void fimc_hw_set_out_dma(struct fimc_ctx *ctx)
struct fimc_dev *dev = ctx->fimc_dev;
struct fimc_frame *frame = &ctx->d_frame;
struct fimc_dma_offset *offset = &frame->dma_offset;
+ struct fimc_fmt *fmt = frame->fmt;
/* Set the input dma offsets. */
cfg = 0;
@@ -198,15 +199,22 @@ void fimc_hw_set_out_dma(struct fimc_ctx *ctx)
cfg = readl(dev->regs + S5P_CIOCTRL);
cfg &= ~(S5P_CIOCTRL_ORDER2P_MASK | S5P_CIOCTRL_ORDER422_MASK |
- S5P_CIOCTRL_YCBCR_PLANE_MASK);
+ S5P_CIOCTRL_YCBCR_PLANE_MASK | S5P_CIOCTRL_RGB16FMT_MASK);
- if (frame->fmt->colplanes == 1)
+ if (fmt->colplanes == 1)
cfg |= ctx->out_order_1p;
- else if (frame->fmt->colplanes == 2)
+ else if (fmt->colplanes == 2)
cfg |= ctx->out_order_2p | S5P_CIOCTRL_YCBCR_2PLANE;
- else if (frame->fmt->colplanes == 3)
+ else if (fmt->colplanes == 3)
cfg |= S5P_CIOCTRL_YCBCR_3PLANE;
+ if (fmt->color == S5P_FIMC_RGB565)
+ cfg |= S5P_CIOCTRL_RGB565;
+ else if (fmt->color == S5P_FIMC_RGB555)
+ cfg |= S5P_CIOCTRL_ARGB1555;
+ else if (fmt->color == S5P_FIMC_RGB444)
+ cfg |= S5P_CIOCTRL_ARGB4444;
+
writel(cfg, dev->regs + S5P_CIOCTRL);
}
@@ -278,22 +286,28 @@ static void fimc_hw_set_scaler(struct fimc_ctx *ctx)
if (sc->copy_mode)
cfg |= S5P_CISCCTRL_ONE2ONE;
-
if (ctx->in_path == FIMC_DMA) {
- if (src_frame->fmt->color == S5P_FIMC_RGB565)
+ switch (src_frame->fmt->color) {
+ case S5P_FIMC_RGB565:
cfg |= S5P_CISCCTRL_INRGB_FMT_RGB565;
- else if (src_frame->fmt->color == S5P_FIMC_RGB666)
+ break;
+ case S5P_FIMC_RGB666:
cfg |= S5P_CISCCTRL_INRGB_FMT_RGB666;
- else if (src_frame->fmt->color == S5P_FIMC_RGB888)
+ break;
+ case S5P_FIMC_RGB888:
cfg |= S5P_CISCCTRL_INRGB_FMT_RGB888;
+ break;
+ }
}
if (ctx->out_path == FIMC_DMA) {
- if (dst_frame->fmt->color == S5P_FIMC_RGB565)
+ u32 color = dst_frame->fmt->color;
+
+ if (color >= S5P_FIMC_RGB444 && color <= S5P_FIMC_RGB565)
cfg |= S5P_CISCCTRL_OUTRGB_FMT_RGB565;
- else if (dst_frame->fmt->color == S5P_FIMC_RGB666)
+ else if (color == S5P_FIMC_RGB666)
cfg |= S5P_CISCCTRL_OUTRGB_FMT_RGB666;
- else if (dst_frame->fmt->color == S5P_FIMC_RGB888)
+ else if (color == S5P_FIMC_RGB888)
cfg |= S5P_CISCCTRL_OUTRGB_FMT_RGB888;
} else {
cfg |= S5P_CISCCTRL_OUTRGB_FMT_RGB888;
@@ -379,6 +393,21 @@ void fimc_hw_set_effect(struct fimc_ctx *ctx, bool active)
writel(cfg, dev->regs + S5P_CIIMGEFF);
}
+void fimc_hw_set_rgb_alpha(struct fimc_ctx *ctx)
+{
+ struct fimc_dev *dev = ctx->fimc_dev;
+ struct fimc_frame *frame = &ctx->d_frame;
+ u32 cfg;
+
+ if (!(frame->fmt->flags & FMT_HAS_ALPHA))
+ return;
+
+ cfg = readl(dev->regs + S5P_CIOCTRL);
+ cfg &= ~S5P_CIOCTRL_ALPHA_OUT_MASK;
+ cfg |= (frame->alpha << 4);
+ writel(cfg, dev->regs + S5P_CIOCTRL);
+}
+
static void fimc_hw_set_in_dma_size(struct fimc_ctx *ctx)
{
struct fimc_dev *dev = ctx->fimc_dev;
diff --git a/drivers/media/video/s5p-fimc/regs-fimc.h
b/drivers/media/video/s5p-fimc/regs-fimc.h
index c8e3b94..c7a5bc5 100644
--- a/drivers/media/video/s5p-fimc/regs-fimc.h
+++ b/drivers/media/video/s5p-fimc/regs-fimc.h
@@ -107,6 +107,11 @@
#define S5P_CIOCTRL_YCBCR_3PLANE (0 << 3)
#define S5P_CIOCTRL_YCBCR_2PLANE (1 << 3)
#define S5P_CIOCTRL_YCBCR_PLANE_MASK (1 << 3)
+#define S5P_CIOCTRL_ALPHA_OUT_MASK (0xff << 4)
+#define S5P_CIOCTRL_RGB16FMT_MASK (3 << 16)
+#define S5P_CIOCTRL_RGB565 (0 << 16)
+#define S5P_CIOCTRL_ARGB1555 (1 << 16)
+#define S5P_CIOCTRL_ARGB4444 (2 << 16)
#define S5P_CIOCTRL_ORDER2P_SHIFT (24)
#define S5P_CIOCTRL_ORDER2P_MASK (3 << 24)
#define S5P_CIOCTRL_ORDER422_2P_LSB_CRCB (0 << 24)
--
1.7.7.2
--
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