kernel/drivers/gpu/drm/vc4/vc4_regs.h, branch linux-4.17.y

drm/vc4: Set premultiplied for alpha formats

2018-03-09T19:24:53Z

Alpha formats in DRM are assumed to be premultiplied, so we should be setting the PREMULT bit in the plane configuration for HVS. Changes from v1: - Use correct has_alpha Signed-off-by: Stefan Schake Signed-off-by: Eric Anholt Reviewed-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/1520556817-97297-2-git-send-email-stschake@gmail.com

drm/vc4: Expose performance counters to userspace

2018-02-10T22:23:26Z

The V3D engine has various hardware counters which might be interesting to userspace performance analysis tools. Expose new ioctls to create/destroy a performance monitor object and query the counter values of this perfmance monitor. Note that a perfomance monitor is given an ID that is only valid on the file descriptor it has been allocated from. A performance monitor can be attached to a CL submission and the driver will enable HW counters for this request and update the performance monitor values at the end of the job. Signed-off-by: Boris Brezillon Reviewed-by: Eric Anholt Signed-off-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20180112090926.12538-1-boris.brezillon@free-electrons.com

drm/vc4: add HDMI CEC support

2017-07-26T19:15:12Z

This patch adds support to VC4 for CEC. It is under a separate Kconfig option to keep everyone using VC4 from needing to pull in the CEC core. Thanks to Eric Anholt for providing me with the CEC register information. Signed-off-by: Hans Verkuil Signed-off-by: Eric Anholt Reviewed-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20170716104804.48308-4-hverkuil@xs4all.nl

drm/vc4: Add T-format scanout support.

2017-06-15T23:02:45Z

The T tiling format is what V3D uses for textures, with no raster support at all until later revisions of the hardware (and always at a large 3D performance penalty). If we can't scan out V3D's format, then we often need to do a relayout at some stage of the pipeline, either right before texturing from the scanout buffer (common in X11 without a compositor) or between a tiled screen buffer right before scanout (an option I've considered in trying to resolve this inconsistency, but which means needing to use the dirty fb ioctl and having some update policy). T-format scanout lets us avoid either of those shadow copies, for a massive, obvious performance improvement to X11 window dragging without a compositor. Unfortunately, enabling a compositor to work around the discrepancy has turned out to be too costly in memory consumption for the Raspbian distribution. Because the HVS operates a scanline at a time, compositing from T does increase the memory bandwidth cost of scanout. On my 1920x1080@32bpp display on a RPi3, we go from about 15% of system memory bandwidth with linear to about 20% with tiled. However, for X11 this still ends up being a huge performance win in active usage. This patch doesn't yet handle src_x/src_y offsetting within the tiled buffer. However, we fail to do so for untiled buffers already. Signed-off-by: Eric Anholt Link: http://patchwork.freedesktop.org/patch/msgid/20170608001336.12842-1-eric@anholt.net Reviewed-by: Boris Brezillon

drm/vc4: Add HDMI audio support

2017-03-16T17:33:30Z

The HDMI encoder IP embeds all needed blocks to output audio, with a custom DAI called MAI moving audio between the two parts of the HDMI core. This driver now exposes a sound card to let users stream audio to their display. Using the hdmi-codec driver has been considered here, but MAI meant having to significantly rework hdmi-codec, and it would have left little shared code with the I2S mode anyway. The encoder requires that the audio be SPDIF-formatted frames only, which alsalib will format-convert for us. This patch is the combined work of Eric Anholt (initial register setup with a separate dmaengine driver and using simple-audio-card) and Boris Brezillon (moving it all into HDMI, massive debug to get it actually working), and which Eric has the permission to release. v2: Drop "-audio" from sound card name, since that's already implied (suggestion by Boris) Signed-off-by: Eric Anholt Acked-by: Boris Brezillon Link: http://patchwork.freedesktop.org/patch/msgid/20170227202803.12855-2-eric@anholt.net

drm/vc4: Add support for feeding DSI encoders from the pixel valve.

2017-02-01T20:51:22Z

We have to set a different pixel format, which tells the hardware to use the pix_width field that's fed in sideband from the DSI encoder to divide the "pixel" clock. Signed-off-by: Eric Anholt Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161214194621.16499-6-eric@anholt.net

drm/vc4: Set up SCALER_DISPCTRL at boot.

2017-02-01T20:51:22Z

We want the HVS on, obviously, and we also want DSP3 (PV1's source) to be muxed from HVS channel 2 like we expect in vc4_crtc.c. The firmware wasn't setting the DSP3 mux up when both the LCD and HDMI were disabled. Signed-off-by: Eric Anholt Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161214194621.16499-5-eric@anholt.net

drm/vc4: Fix ->clock_select setting for the VEC encoder

2016-12-09T23:26:29Z

PV_CONTROL_CLK_SELECT_VEC is actually 2 and not 0. Fix the definition and rework the vc4_set_crtc_possible_masks() to cover the full range of the PV_CONTROL_CLK_SELECT field. Signed-off-by: Boris Brezillon Signed-off-by: Eric Anholt

drm/vc4: Add support for double-clocked modes.

2016-10-06T18:58:28Z

Now that we have infoframes to report the pixel repeat flag, we can start using it. Fixes locking the 720x480i and 720x576i modes on my Dell 2408WFP. Like the 1920x1080i case, they don't fit properly on the screen, though. Signed-off-by: Eric Anholt

drm/vc4: Set up the AVI and SPD infoframes.

2016-10-06T18:58:28Z

Fixes a purple bar on the left side of the screen with my Dell 2408WFP. It will also be required for supporting the double-clocked video modes. Signed-off-by: Eric Anholt