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Currently we may end up with an LCD clock divider that differs from
the HDMI PHY clock divider if we can't exactly match the pixel clock.
Fix this by using DIV_ROUND_UP to calculate the divider. This works
since the PLL is chosen such that the resulting pixel clock is
never higher than the requested pixel clock.
Fixes: 1feed358ed15 ("sunxi: video: HDMI: Fix clock setup")
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
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Add support for the ddc-i2c-bus device tree property which allows
for using an external i2c master for reading the display's EDID.
Signed-off-by: Niklas Schulze <me@jns.io>
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Currently, HDMI driver doesn't consider minimum and maximum allowed rate
of pll3 (video PLL). It works most of the time, but not always.
Consider monitor with resolution 1920x1200, which has pixel clock rate
of 154 MHz. Current code would determine that pll3 rate has to be set to
154 MHz. However, minimum supported rate is 192 MHz. In this case video
output just won't work.
The reason why the driver is written in the way it is, is that at the
time HDMI PHY and clock configuration wasn't fully understood. But now
we have needed knowledge, so the issue can be fixed.
With this fix, clock configuration routine uses full range (1-16) for
clock divider instead of limited one (1, 2, 4, 11). It also considers
minimum and maximum allowed rate for pll3.
Fixes: 56009451d843 ("sunxi: video: Add A64/H3/H5 HDMI driver")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
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There are HDMI displays where hpd pin is not connected, thus
we cannot get it to work unless we specifically set the resolution.
Rework the display probing, so hotplug detect failure causes
fallback to probing ddc for EDID data.
Signed-off-by: Priit Laes <priit.laes@paf.com>
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Move PLL initialization code to single place so
we won't call it every time we query for EDID data.
Signed-off-by: Priit Laes <priit.laes@paf.com>
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DE2 SoCs can support LCDs up to 1080p (e.g. A64), and 3MHz step won't
let PLL_VIDEO be high enough for them.
Use 6MHz step for PLL_VIDEO when using DE2, to satisfy 1080p LCD.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
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sunxi_rgb2yuv_coef is readonly and never modified.
Signed-off-by: Priit Laes <plaes@plaes.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
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Sometimes when a monitor without EDID information is plugged, the DE2
won't be probed (because of lack of timing information), but the HDMI
node is probed, thus a SimpleFB node with invalid information will be
populated.
Also detect whether DE2 is probed when creating SimpleFB node.
Fixes: be5b96f0e411 ("sunxi: setup simplefb for Allwinner DE2")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
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If compile with support for the efi loader we need to mark the pages
allocated for the framebuffer as reserved so the kernel won't attempt
to use them for other uses.
Signed-off-by: Emmanuel Vadot <manu@freebsd.org>
Acked-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
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HSYNC is bit 8, and VSYNC is bit 9.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
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When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
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Inform the EFI subsystem that the framebuffer memory is reserved.
Without the patch the AllocatePool boot service allocates memory from the
framebuffer which will will be overwritten by screen output.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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flags member of struct timing was not initialized,
this took to unpredictable behaviour of display flags,
such DISPLAY_FLAGS_HSYNC_HIGH instead of _LOW etc.
Init timing->flags = 0
Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
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These are actually different bits, and since some monitors (Benq BL2420PT)
have modes with different HSYNC and VSYNC polarity, we should set them
independently
Tested on Pine64-LTS with Benq BL2420PT monitor.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
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Add support for setting up SimpleFB for LCD display output in DE2
SimpleFB setup code.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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When HDMI is not initialized (e.g. no monitor is plugged), the current
SimpleFB code will still create a broken SimpleFB node.
Detect whether HDMI is initialized when creating SimpleFB node.
Fixes: be5b96f0e411 ("sunxi: setup simplefb for Allwinner DE2")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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Extend DE2 driver with LCD support. Tested on Pinebook which is based
on A64 and has ANX6345 eDP bridge with eDP panel connected to it.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
[agust: rebased v5 on u-boot-video/master]
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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It will be reused in new DM LCD driver.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
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As the support of EFI boot on Allwinner H3 is broken, we still need to
use simplefb to pass the framebuffer to Linux.
Add code to setup simplefb for Allwinner DE2 driver.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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As the DE2 simplefb setup code can also benefit from the simplefb match
code, extract it to a new source file.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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Extend DE2 driver with support for TVE driver, which will be added in
next commit. TVE unit expects data to be in YUV format, so CSC support
is also added here.
Note that HDMI driver has higher priority, so TV out is not probed if
HDMI monitor is detected.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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In order to avoid future confusion with similary named files, rename
tve.c to tve_common.c. New name better represents the fact that this file
holds code which can be and will be shared between multiple drivers.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Newer SoCs use same TV encoder unit. Split it out so it can be reused
with new DM video driver.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
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This commit adds support for HDMI output.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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This is needed for HDMI, which will be added later.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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Video driver for older Allwinner SoCs uses cfb console framework which
in turn uses struct ctfb_res_modes to hold timing informations. However,
DM video framework uses different structure - struct display_timing.
It makes more sense to convert lcdc to use new timing structure because
all new drivers should use DM video framework and older drivers might be
rewritten to use new framework too.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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TCON unit has similar layout and functionality also on newer SoCs. This
commit splits out TCON code for easier reuse later.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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