On 8/22/19 10:05 AM, Marco Felsch wrote: > Some connectors no matter if in- or output supports only a limited > range of sdtv standards. It doesn't matter if the hardware behind that > connector supports more than the listed formats since the users are > restriced by a label e.g. to plug only a camera into this connector > which uses the PAL format. > > This patch adds the capability to describe such limitation within the > firmware. There are no format restrictions if the property isn't > present, so it's completely backward compatible. > > Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx> > --- > [1] https://patchwork.kernel.org/cover/10794703/ > > v8: > Hi Rob, > > I dropped your r b tag becuase of the changes I made in this version. > Please can you have look on it again? Luckily this would be the last > time ;-) > > - move definition to include/dt-bindings/display > - rename tvnorms.h to sdtv-standards.h > - TVORMS_* -> SDTV_STD_* > - add sync comments > - adapt commit message > - fix bindings documentation > > v7: > I kept Robs r b tag because I only changed the example and extended > TVNORM_* macros. > > - fix some style issues > - add TVNORM_NTSC, TVNORM_525_60 and TVNORM_625_50 > > v6: > - tvnorms.h: use tabs instead of spaces > - tvnorms.h: add TVNORM_PAL and TVNORM_SECAM > - tvnorms.h: drop rarely used TVNORM_ATSC_* norms > > v2-v4: > - nothing since the patch was squashed from series [1] into this > series. > --- > .../display/connector/analog-tv-connector.txt | 6 ++ > include/dt-bindings/display/sdtv-standards.h | 76 +++++++++++++++++++ > include/uapi/linux/videodev2.h | 4 + > 3 files changed, 86 insertions(+) > create mode 100644 include/dt-bindings/display/sdtv-standards.h > > diff --git a/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt b/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt > index 0c0970c210ab..883bcb2604c7 100644 > --- a/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt > +++ b/Documentation/devicetree/bindings/display/connector/analog-tv-connector.txt > @@ -6,16 +6,22 @@ Required properties: > > Optional properties: > - label: a symbolic name for the connector > +- sdtv-standards: limit the supported TV standards on a connector to the given > + ones. If not specified all TV standards are allowed. > + Possible TV standards are defined in > + include/dt-bindings/display/sdtv-standards.h. > > Required nodes: > - Video port for TV input > > Example > ------- > +#include <dt-bindings/display/sdtv-standards.h> > > tv: connector { > compatible = "composite-video-connector"; > label = "tv"; > + sdtv-standards = <(SDTV_STD_PAL | SDTV_STD_NTSC)>; > > port { > tv_connector_in: endpoint { > diff --git a/include/dt-bindings/display/sdtv-standards.h b/include/dt-bindings/display/sdtv-standards.h > new file mode 100644 > index 000000000000..bb6966505a6c > --- /dev/null > +++ b/include/dt-bindings/display/sdtv-standards.h > @@ -0,0 +1,76 @@ > +/* SPDX-License-Identifier: GPL-2.0-only or X11 */ > +/* > + * Copyright 2019 Pengutronix, Marco Felsch <kernel@xxxxxxxxxxxxxx> > + */ > + > +#ifndef _DT_BINDINGS_DISPLAY_SDTV_STDS_H > +#define _DT_BINDINGS_DISPLAY_SDTV_STDS_H > + > +/* > + * Attention: Keep the TV_STD_* bit definitions in sync with TV_STD -> SDTV_STD > + * include/uapi/linux/videodev2.h V4L2_STD_* bit definitions. > + */ > +/* One bit for each standard */ > +#define SDTV_STD_PAL_B 0x00000001 > +#define SDTV_STD_PAL_B1 0x00000002 > +#define SDTV_STD_PAL_G 0x00000004 > +#define SDTV_STD_PAL_H 0x00000008 > +#define SDTV_STD_PAL_I 0x00000010 > +#define SDTV_STD_PAL_D 0x00000020 > +#define SDTV_STD_PAL_D1 0x00000040 > +#define SDTV_STD_PAL_K 0x00000080 > + > +#define SDTV_STD_PAL (SDTV_STD_PAL_B | \ > + SDTV_STD_PAL_B1 | \ > + SDTV_STD_PAL_G | \ > + SDTV_STD_PAL_H | \ > + SDTV_STD_PAL_I | \ > + SDTV_STD_PAL_D | \ > + SDTV_STD_PAL_D1 | \ > + SDTV_STD_PAL_K) > + > +#define SDTV_STD_PAL_M 0x00000100 > +#define SDTV_STD_PAL_N 0x00000200 > +#define SDTV_STD_PAL_Nc 0x00000400 > +#define SDTV_STD_PAL_60 0x00000800 > + > +#define SDTV_STD_NTSC_M 0x00001000 /* BTSC */ > +#define SDTV_STD_NTSC_M_JP 0x00002000 /* EIA-J */ > +#define SDTV_STD_NTSC_443 0x00004000 > +#define SDTV_STD_NTSC_M_KR 0x00008000 /* FM A2 */ > + > +#define SDTV_STD_NTSC (SDTV_STD_NTSC_M | \ > + SDTV_STD_NTSC_M_JP | \ > + SDTV_STD_NTSC_M_KR) > + > +#define SDTV_STD_SECAM_B 0x00010000 > +#define SDTV_STD_SECAM_D 0x00020000 > +#define SDTV_STD_SECAM_G 0x00040000 > +#define SDTV_STD_SECAM_H 0x00080000 > +#define SDTV_STD_SECAM_K 0x00100000 > +#define SDTV_STD_SECAM_K1 0x00200000 > +#define SDTV_STD_SECAM_L 0x00400000 > +#define SDTV_STD_SECAM_LC 0x00800000 > + > +#define SDTV_STD_SECAM (SDTV_STD_SECAM_B | \ > + SDTV_STD_SECAM_D | \ > + SDTV_STD_SECAM_G | \ > + SDTV_STD_SECAM_H | \ > + SDTV_STD_SECAM_K | \ > + SDTV_STD_SECAM_K1 | \ > + SDTV_STD_SECAM_L | \ > + SDTV_STD_SECAM_LC) > + > +/* Standards for Countries with 60Hz Line frequency */ > +#define SDTV_STD_525_60 (SDTV_STD_PAL_M | \ > + SDTV_STD_PAL_60 | \ > + SDTV_STD_NTSC | \ > + SDTV_STD_NTSC_443) > + > +/* Standards for Countries with 50Hz Line frequency */ > +#define SDTV_STD_625_50 (SDTV_STD_PAL | \ > + SDTV_STD_PAL_N | \ > + SDTV_STD_PAL_Nc | \ > + SDTV_STD_SECAM) > + > +#endif /* _DT_BINDINGS_DISPLAY_SDTV_STDS_H */ > diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h > index 530638dffd93..c358cc34fc34 100644 > --- a/include/uapi/linux/videodev2.h > +++ b/include/uapi/linux/videodev2.h > @@ -1208,6 +1208,10 @@ struct v4l2_selection { > > typedef __u64 v4l2_std_id; > > +/* > + * Attention: Keep the V4L2_STD_* bit definitions in sync with > + * include/dt-bindings/display/sdtv-standards.h TV_STD_* bit definitions. TV_STD -> SDTV_STD > + */ > /* one bit for each */ > #define V4L2_STD_PAL_B ((v4l2_std_id)0x00000001) > #define V4L2_STD_PAL_B1 ((v4l2_std_id)0x00000002) > I really like this. Nice. Regards, Hans
