media: v4l2: Add NV15 and NV20 pixel formats

Add NV15 and NV20 pixel formats used by the Rockchip Video Decoder for
10-bit buffers.

NV15 and NV20 is 10-bit 4:2:0/4:2:2 semi-planar YUV formats similar to
NV12 and NV16, using 10-bit components with no padding between each
component. Instead, a group of 4 luminance/chrominance samples are
stored over 5 bytes in little endian order:

YYYY = UVUV = 4 * 10 bits = 40 bits = 5 bytes

The '15' and '20' suffix refers to the optimum effective bits per pixel
which is achieved when the total number of luminance samples is a
multiple of 8 for NV15 and 4 for NV20.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Christopher Obbard <chris.obbard@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

Documentation/userspace-api/media/v4l/pixfmt-yuv-planar.rst

@@ -137,6 +137,13 @@ All components are stored with the same number of bits per component.
       - Cb, Cr
       - No
       - Linear
+    * - V4L2_PIX_FMT_NV15
+      - 'NV15'
+      - 10
+      - 4:2:0
+      - Cb, Cr
+      - Yes
+      - Linear
     * - V4L2_PIX_FMT_NV15_4L4
       - 'VT15'
       - 15
@@ -186,6 +193,13 @@ All components are stored with the same number of bits per component.
       - Cr, Cb
       - No
       - Linear
+    * - V4L2_PIX_FMT_NV20
+      - 'NV20'
+      - 10
+      - 4:2:2
+      - Cb, Cr
+      - Yes
+      - Linear
     * - V4L2_PIX_FMT_NV24
       - 'NV24'
       - 8
@@ -302,6 +316,57 @@ of the luma plane.
       - Cr\ :sub:`11`
 
 
+.. _V4L2-PIX-FMT-NV15:
+
+NV15
+----
+
+Semi-planar 10-bit YUV 4:2:0 format similar to NV12, using 10-bit components
+with no padding between each component. A group of 4 components are stored over
+5 bytes in little endian order.
+
+.. flat-table:: Sample 4x4 NV15 Image (1 byte per cell)
+    :header-rows:  0
+    :stub-columns: 0
+
+    * - start + 0:
+      - Y'\ :sub:`00[7:0]`
+      - Y'\ :sub:`01[5:0]`\ Y'\ :sub:`00[9:8]`
+      - Y'\ :sub:`02[3:0]`\ Y'\ :sub:`01[9:6]`
+      - Y'\ :sub:`03[1:0]`\ Y'\ :sub:`02[9:4]`
+      - Y'\ :sub:`03[9:2]`
+    * - start + 5:
+      - Y'\ :sub:`10[7:0]`
+      - Y'\ :sub:`11[5:0]`\ Y'\ :sub:`10[9:8]`
+      - Y'\ :sub:`12[3:0]`\ Y'\ :sub:`11[9:6]`
+      - Y'\ :sub:`13[1:0]`\ Y'\ :sub:`12[9:4]`
+      - Y'\ :sub:`13[9:2]`
+    * - start + 10:
+      - Y'\ :sub:`20[7:0]`
+      - Y'\ :sub:`21[5:0]`\ Y'\ :sub:`20[9:8]`
+      - Y'\ :sub:`22[3:0]`\ Y'\ :sub:`21[9:6]`
+      - Y'\ :sub:`23[1:0]`\ Y'\ :sub:`22[9:4]`
+      - Y'\ :sub:`23[9:2]`
+    * - start + 15:
+      - Y'\ :sub:`30[7:0]`
+      - Y'\ :sub:`31[5:0]`\ Y'\ :sub:`30[9:8]`
+      - Y'\ :sub:`32[3:0]`\ Y'\ :sub:`31[9:6]`
+      - Y'\ :sub:`33[1:0]`\ Y'\ :sub:`32[9:4]`
+      - Y'\ :sub:`33[9:2]`
+    * - start + 20:
+      - Cb\ :sub:`00[7:0]`
+      - Cr\ :sub:`00[5:0]`\ Cb\ :sub:`00[9:8]`
+      - Cb\ :sub:`01[3:0]`\ Cr\ :sub:`00[9:6]`
+      - Cr\ :sub:`01[1:0]`\ Cb\ :sub:`01[9:4]`
+      - Cr\ :sub:`01[9:2]`
+    * - start + 25:
+      - Cb\ :sub:`10[7:0]`
+      - Cr\ :sub:`10[5:0]`\ Cb\ :sub:`10[9:8]`
+      - Cb\ :sub:`11[3:0]`\ Cr\ :sub:`10[9:6]`
+      - Cr\ :sub:`11[1:0]`\ Cb\ :sub:`11[9:4]`
+      - Cr\ :sub:`11[9:2]`
+
+
 .. _V4L2-PIX-FMT-NV12MT:
 .. _V4L2-PIX-FMT-NV12MT-16X16:
 .. _V4L2-PIX-FMT-NV12-4L4:
@@ -631,6 +696,69 @@ number of lines as the luma plane.
       - Cr\ :sub:`32`
 
 
+.. _V4L2-PIX-FMT-NV20:
+
+NV20
+----
+
+Semi-planar 10-bit YUV 4:2:2 format similar to NV16, using 10-bit components
+with no padding between each component. A group of 4 components are stored over
+5 bytes in little endian order.
+
+.. flat-table:: Sample 4x4 NV20 Image (1 byte per cell)
+    :header-rows:  0
+    :stub-columns: 0
+
+    * - start + 0:
+      - Y'\ :sub:`00[7:0]`
+      - Y'\ :sub:`01[5:0]`\ Y'\ :sub:`00[9:8]`
+      - Y'\ :sub:`02[3:0]`\ Y'\ :sub:`01[9:6]`
+      - Y'\ :sub:`03[1:0]`\ Y'\ :sub:`02[9:4]`
+      - Y'\ :sub:`03[9:2]`
+    * - start + 5:
+      - Y'\ :sub:`10[7:0]`
+      - Y'\ :sub:`11[5:0]`\ Y'\ :sub:`10[9:8]`
+      - Y'\ :sub:`12[3:0]`\ Y'\ :sub:`11[9:6]`
+      - Y'\ :sub:`13[1:0]`\ Y'\ :sub:`12[9:4]`
+      - Y'\ :sub:`13[9:2]`
+    * - start + 10:
+      - Y'\ :sub:`20[7:0]`
+      - Y'\ :sub:`21[5:0]`\ Y'\ :sub:`20[9:8]`
+      - Y'\ :sub:`22[3:0]`\ Y'\ :sub:`21[9:6]`
+      - Y'\ :sub:`23[1:0]`\ Y'\ :sub:`22[9:4]`
+      - Y'\ :sub:`23[9:2]`
+    * - start + 15:
+      - Y'\ :sub:`30[7:0]`
+      - Y'\ :sub:`31[5:0]`\ Y'\ :sub:`30[9:8]`
+      - Y'\ :sub:`32[3:0]`\ Y'\ :sub:`31[9:6]`
+      - Y'\ :sub:`33[1:0]`\ Y'\ :sub:`32[9:4]`
+      - Y'\ :sub:`33[9:2]`
+    * - start + 20:
+      - Cb\ :sub:`00[7:0]`
+      - Cr\ :sub:`00[5:0]`\ Cb\ :sub:`00[9:8]`
+      - Cb\ :sub:`01[3:0]`\ Cr\ :sub:`00[9:6]`
+      - Cr\ :sub:`01[1:0]`\ Cb\ :sub:`01[9:4]`
+      - Cr\ :sub:`01[9:2]`
+    * - start + 25:
+      - Cb\ :sub:`10[7:0]`
+      - Cr\ :sub:`10[5:0]`\ Cb\ :sub:`10[9:8]`
+      - Cb\ :sub:`11[3:0]`\ Cr\ :sub:`10[9:6]`
+      - Cr\ :sub:`11[1:0]`\ Cb\ :sub:`11[9:4]`
+      - Cr\ :sub:`11[9:2]`
+    * - start + 30:
+      - Cb\ :sub:`20[7:0]`
+      - Cr\ :sub:`20[5:0]`\ Cb\ :sub:`20[9:8]`
+      - Cb\ :sub:`21[3:0]`\ Cr\ :sub:`20[9:6]`
+      - Cr\ :sub:`21[1:0]`\ Cb\ :sub:`21[9:4]`
+      - Cr\ :sub:`21[9:2]`
+    * - start + 35:
+      - Cb\ :sub:`30[7:0]`
+      - Cr\ :sub:`30[5:0]`\ Cb\ :sub:`30[9:8]`
+      - Cb\ :sub:`31[3:0]`\ Cr\ :sub:`30[9:6]`
+      - Cr\ :sub:`31[1:0]`\ Cb\ :sub:`31[9:4]`
+      - Cr\ :sub:`31[9:2]`
+
+
 .. _V4L2-PIX-FMT-NV24:
 .. _V4L2-PIX-FMT-NV42: