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Add support for the RP1 VEC hardware. Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> drm: rp1: rp1-vec: Allow non-standard modes with various crops Tweak sync timings in the advertised modelines. Accept other, custom modes, provided they fit within the active area of one of the existing hardware-supported TV modes. Instead of always padding symmetrically, try to respect the user's [hv]sync_start values, allowing the image to be shifted around the screen (to fine-tune overscan correction). Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> drm/rp1: depends on, instead of select, MFD_RP1 According to kconfig-language.txt [1], select should be used only for "non-visible symbols ... and for symbols with no dependencies". Since MFD_RP1 both is visible and has a dependency, "select" should not be used and "depends on" should be used instead. In particular, this fixes the build of this kernel tree on NixOS, where its kernel config system will try to answer 'M' to as many config as possible. [1] https://www.kernel.org/doc/html/latest/kbuild/kconfig-language.html Signed-off-by: Ratchanan Srirattanamet <peathot@hotmail.com> drm: rp1: Use tv_mode from the command line and fix for Linux 6.6 Use the standard enum drm_connector_tv_mode instead of a private enum and switch from the legacy to the standard tv_mode property. Remove the module parameter "tv_norm". Instead, get tv_mode from the command line and make this the connector's default TV mode. Don't restrict the choice of modes based on tv_mode, but interpret nonstandard combinations as NTSC or PAL, depending on resolution. Thus the default tv_mode=NTSC effectively means "Auto". Tweak the advertised horizontal timings for 625/50 to match Rec.601 Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> drm: rp1: VEC and DPI drivers: Fix bug #5901 Rework probe() to use devm_drm_dev_alloc(), embedding the DRM device in the DPI or VEC device as now seems to be recommended. Change order of resource allocation and driver initialization. This prevents it trying to write to an unmapped register during clean-up, which previously could crash. Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> drm: rp1: vec: Support more video modes in the RP1 VEC driver Support a wider range of pixel clock rates. The driver will round pixclock up to 108MHz/n but tries to honour the desired image width and position (of the centre of the display relative to HSYNC_STARTs). This adds complexity but removes the need for separate 13.5MHz and 15.428MHz modes. Support "fake" double-rate progressive modes (in which only every 2nd scanline is displayed). To work around aspect ratio issues. Add Monochrome TV mode support. Add "vintage" modes (544x380i for System A; 848x738i for System E) when configured for Monochrome. Add a way to create a "custom" display mode from a module parameter. Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> drm: rp1: rp1-vec: Add DRM_FORMAT_ARGB8888 and DRM_FORMAT_ABGR8888 Android requires this. As the underlying hardware doesn't support alpha blending, we ignore the alpha value. Signed-off-by: Jan Kehren <jan.kehren@emteria.com> drivers: drm: rp1-vec: Increase width limit, for PAL 16:9 @ 18MHz There was no technical reason for the DRM mode's width limit of 848; increase it to 960 (720*18MHz/13.5MHz) to support ~square pixels on 16:9 screens. Tweak the PAL active window to start slightly earlier. (The maximum number of visible columns at 18MHz is about 942.) Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> drm/vc4: Make VEC progressive modes readily accessible Add predefined modelines for the 240p (NTSC) and 288p (PAL) progressive modes, and report them through vc4_vec_connector_get_modes(). Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com> drm/rp1-vec: Run DRM default client setup Call drm_client_setup() to run the kernel's default client setup for DRM. Set fbdev_probe in struct drm_driver, so that the client setup can start the common fbdev client. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> drm: rp1: Enable VEC->GPIO output; cosmetic change to registers In the VEC driver, enable mapping VEC (not DPI) to DPI GPIOs. This is to support VEC output over GPIO on Raspberry Pi CM5. It is harmless as DPI and VEC could not be used concurrently, and the output is anyway conditional on pinctrl. Also, tweak the style of VIDEO_OUT_CFG register definitions (in both DPI and VEC drivers) to be more Linux-friendly. Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> drm: rp1: rp1-vec: Support 60fps in interlaced modes; other tweaks To work around the 30fps buffer-flip rate limit when using VEC's "native" interlaced modes, switch to sending individual fields to the VEC BE, using an ISR to flip between fields. When the TV mode is NTSC, change advertised progressive modes to have 263 total lines; this ameliorates colour artifacts, although it reduces the frame rate slightly from 60.05Hz to 59.83Hz. Progressive modes with 262 lines remain supported. Fix an error in equalising pulse configuration for PAL-M/PAL60. Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> Fixup rp1-vec Kconfig
Linux kernel
There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first.
In order to build the documentation, use make htmldocs or
make pdfdocs. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
Build status for rpi-6.1.y:
Build status for rpi-6.6.y:
Build status for rpi-6.12.y:
