| Commit message (Collapse) | Author | Age | Files | Lines |
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The gpiod_ (GPIO descriptor) API used with Linux differs from barebox'
normal GPIO API:
- gpiod handles are opaque pointers and not an integer, which users
have an expectation of stability for
- gpiod API uses logic levels by default with separate raw API for
physical level instead of physical level by default and separate
API taking active level into account.
The barebox gpiod_ API mimics the latter point, but still uses integers
requiring ugly and arguably error prone conversions when porting kernel
code. Let's improve upon that by just encoding the integer into a
pointer variable for API compatibility.
Later commits will switch barebox GPIO support to use actual GPIO
descriptors without consulting the numeric indices, but we do this
temporary switch here, so we can split up provider and consumer changes.
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20230622072329.1339317-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Track framebuffer damage with a simple rectangle that can be used to
issue partial updates during fb_flush. This speeds up fbconsole.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.barebox.org/20230405122734.2348025-3-p.zabel@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Port helper functions for the panel-mipi-dbi driver from the Linux
kernel.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.barebox.org/20230330124643.3562397-3-p.zabel@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The '_d' suffix was originally introduced in case we want to import
Linux struct device as a separate struct into barebox. Over time it
became clear that this won't happen, instead barebox struct device_d
is basically the same as Linux struct device. Rename the struct name
accordingly to make porting Linux code easier.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Marco Felsch <m.felsch@pengutronix.de>
Link: https://lore.barebox.org/20221214123512.189688-3-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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To add a compilation check for the omap-fb driver, move the
omap-fb.h header to a global location.
The "omap_add_display" function is used only for legacy boards,
so we will move it to a common place for such calls (omap_devices.c).
Signed-off-by: Alexander Shiyan <eagle.alexander923@gmail.com>
Link: https://lore.barebox.org/20220422071158.14631-1-eagle.alexander923@gmail.com
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Import the Linux v5.15 state of the driver to allow easy porting of
MIPI-DBI displays like the Ilitek 9431 added in a follow-up commit.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220202223023.341817-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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All these files lack a license statement, so add the default
GPL-2.0-only.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20220103120539.1730644-7-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Fix spelling error that prevented us from getting
the atmel,lcd-wiring-mode
The Bindings mandate the use of BRG.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Currently the backlight implementation stretches a brightness change over
a period of 100ms. While this is a fine default for PWM backlights, a user
might wish to change this slew time to meet other constraints or even
completely disable it for some backlight devices.
Add a parameter and provide the default value from the backlight device.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Simplify board specific code by specifying the power_control
gpio direct in platform data.
Move registration of the GPIO to the driver so we no longer
need to duplicate this for each board.
As an intended side-effect there is no longer
any references to platform_data outside atmel_lcdc_register()
so remove it from struct atmel_lcdfb_info
The implementation assumes that GPIO=0 is the same as no power control.
This prevents us from using any GPIO=0 for power control,
but this is not considered a problem for current users.
Future DT users will not have this limitation.
This commit include a fix so we will actually power
down if requested. Previously this was hardcoded to ON.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The i.MX specific DI_MODE VPL ioctl already allows to query the encoder
input bus format. This patch also allows non-i.MX specific encoder drivers
to report their input bus format.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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V4L2 pixel formats are supposed to describe video frames in memory. To
describe the pixel format on the hardware bus between display interface
and encoders, use media bus formats, which are more expressive.
This allows to get rid of the custom GBR24 and LVDS666 fourccs.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Add empty static inline function fallbacks if backlight support
is not enabled, so that drivers using the backlight don't fail to
build.
Fixes:
In function `simple_panel_ioctl':
undefined reference to `of_backlight_find'
undefined reference to `backlight_set_brightness_default'
undefined reference to `backlight_set_brightness'
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Complex video pipelines are modelled with the of_graph bindings in
the devicetree. This patch adds a ioctl infrastructure to issue
commands to the remote endpoint of a of_graph. Currently defined
ioctls are prepare/unprepare, enable/disable and get_modes. This
is enough to control LVDS or HDMI encoder or simple panels.
A device node which contains of_graph endpoints can be registered
as a VPL entity. An entity can receive ioctls via the .ioctl callback
and also issue ioctls by calling vpl_ioctl. The core itself will never
iterate over the entire pipeline. Instead, the different VPL entities
should forward an ioctl to the next instance in the pipeline whenever
necessary.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This adds a small backlight layer. It provides a backlight device
on which the brightness parameter can be used to adjust the brightness.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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This IP is present on the at91sam9 until the sam9g45, on the sam9x5 we use a
new IP.
This driver is based on the linux one.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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