From: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
Add support for UYVY as an output format. The uv_swap bit in the
MI_XTD_FORMAT_CTRL register that is used for the NV formats does not
work for packed YUV formats. Thus, UYVY support is implemented via
byte-swapping. This method clearly does not work for implementing
support for YVYU and VYUY.
Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Tested-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
Tested-by: Adam Ford <aford173@xxxxxxxxx>
---
Changes since v6:
- Replace MI_OUTPUT_FORMAT feature flag with MAIN_STRIDE
---
.../platform/rockchip/rkisp1/rkisp1-capture.c | 41 +++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
index 33756b44a317..0efdf8513de0 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
@@ -97,6 +97,12 @@ static const struct rkisp1_capture_fmt_cfg rkisp1_mp_fmts[] = {
.uv_swap = 0,
.write_format = RKISP1_MI_CTRL_MP_WRITE_YUVINT,
.mbus = MEDIA_BUS_FMT_YUYV8_2X8,
+ }, {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .uv_swap = 0,
+ .yc_swap = 1,
+ .write_format = RKISP1_MI_CTRL_MP_WRITE_YUVINT,
+ .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
}, {
.fourcc = V4L2_PIX_FMT_YUV422P,
.uv_swap = 0,
@@ -231,6 +237,13 @@ static const struct rkisp1_capture_fmt_cfg rkisp1_sp_fmts[] = {
.write_format = RKISP1_MI_CTRL_SP_WRITE_INT,
.output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
.mbus = MEDIA_BUS_FMT_YUYV8_2X8,
+ }, {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .uv_swap = 0,
+ .yc_swap = 1,
+ .write_format = RKISP1_MI_CTRL_SP_WRITE_INT,
+ .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
+ .mbus = MEDIA_BUS_FMT_YUYV8_2X8,
}, {
.fourcc = V4L2_PIX_FMT_YUV422P,
.uv_swap = 0,
@@ -464,6 +477,20 @@ static void rkisp1_mp_config(struct rkisp1_capture *cap)
rkisp1_write(rkisp1, RKISP1_CIF_MI_XTD_FORMAT_CTRL, reg);
}
+ /*
+ * U/V swapping with the MI_XTD_FORMAT_CTRL register only works for
+ * NV12/NV21 and NV16/NV61, so instead use byte swap to support UYVY.
+ * YVYU and VYUY cannot be supported with this method.
+ */
+ if (rkisp1_has_feature(rkisp1, MAIN_STRIDE)) {
+ reg = rkisp1_read(rkisp1, RKISP1_CIF_MI_OUTPUT_ALIGN_FORMAT);
+ if (cap->pix.cfg->yc_swap)
+ reg |= RKISP1_CIF_OUTPUT_ALIGN_FORMAT_MP_BYTE_SWAP_BYTES;
+ else
+ reg &= ~RKISP1_CIF_OUTPUT_ALIGN_FORMAT_MP_BYTE_SWAP_BYTES;
+ rkisp1_write(rkisp1, RKISP1_CIF_MI_OUTPUT_ALIGN_FORMAT, reg);
+ }
+
rkisp1_mi_config_ctrl(cap);
reg = rkisp1_read(rkisp1, RKISP1_CIF_MI_CTRL);
@@ -507,6 +534,20 @@ static void rkisp1_sp_config(struct rkisp1_capture *cap)
rkisp1_write(rkisp1, RKISP1_CIF_MI_XTD_FORMAT_CTRL, reg);
}
+ /*
+ * U/V swapping with the MI_XTD_FORMAT_CTRL register only works for
+ * NV12/NV21 and NV16/NV61, so instead use byte swap to support UYVY.
+ * YVYU and VYUY cannot be supported with this method.
+ */
+ if (rkisp1_has_feature(rkisp1, MAIN_STRIDE)) {
+ reg = rkisp1_read(rkisp1, RKISP1_CIF_MI_OUTPUT_ALIGN_FORMAT);
+ if (cap->pix.cfg->yc_swap)
+ reg |= RKISP1_CIF_OUTPUT_ALIGN_FORMAT_SP_BYTE_SWAP_BYTES;
+ else
+ reg &= ~RKISP1_CIF_OUTPUT_ALIGN_FORMAT_SP_BYTE_SWAP_BYTES;
+ rkisp1_write(rkisp1, RKISP1_CIF_MI_OUTPUT_ALIGN_FORMAT, reg);
+ }
+
rkisp1_mi_config_ctrl(cap);
mi_ctrl = rkisp1_read(rkisp1, RKISP1_CIF_MI_CTRL);
--
Regards,
Laurent Pinchart
