fbdev: Fix recursive dependencies wrt BACKLIGHT_CLASS_DEVICE

Do not select BACKLIGHT_CLASS_DEVICE from FB_BACKLIGHT. The latter
only controls backlight support within fbdev core code and data
struct

fbdev: Fix recursive dependencies wrt BACKLIGHT_CLASS_DEVICE

Do not select BACKLIGHT_CLASS_DEVICE from FB_BACKLIGHT. The latter
only controls backlight support within fbdev core code and data
structures.

Make fbdev drivers depend on BACKLIGHT_CLASS_DEVICE and let users
select it explicitly. Fixes warnings about recursive dependencies,
such as

error: recursive dependency detected!
symbol BACKLIGHT_CLASS_DEVICE is selected by FB_BACKLIGHT
symbol FB_BACKLIGHT is selected by FB_SH_MOBILE_LCDC
symbol FB_SH_MOBILE_LCDC depends on FB_DEVICE
symbol FB_DEVICE depends on FB_CORE
symbol FB_CORE is selected by DRM_GEM_DMA_HELPER
symbol DRM_GEM_DMA_HELPER is selected by DRM_PANEL_ILITEK_ILI9341
symbol DRM_PANEL_ILITEK_ILI9341 depends on BACKLIGHT_CLASS_DEVICE

BACKLIGHT_CLASS_DEVICE is user-selectable, so making drivers adapt to
it is the correct approach in any case. For most drivers, backlight
support is also configurable separately.

v3:
- Select BACKLIGHT_CLASS_DEVICE in PowerMac defconfigs (Christophe)
- Fix PMAC_BACKLIGHT module dependency corner cases (Christophe)
v2:
- s/BACKLIGHT_DEVICE_CLASS/BACKLIGHT_CLASS_DEVICE (Helge)
- Fix fbdev driver-dependency corner case (Arnd)

Signed-off-by: Thomas Zimmermann <[email protected]>
Reviewed-by: Arnd Bergmann <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

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staging/fbtft: Use fb_ops helpers for deferred I/O

Generate callback functions for struct fb_ops with the fbdev macro
FB_GEN_DEFAULT_DEFERRED_SYSMEM_OPS(). Initialize struct fb_ops to
the generated

staging/fbtft: Use fb_ops helpers for deferred I/O

Generate callback functions for struct fb_ops with the fbdev macro
FB_GEN_DEFAULT_DEFERRED_SYSMEM_OPS(). Initialize struct fb_ops to
the generated functions with an fbdev initializer macro.

Signed-off-by: Thomas Zimmermann <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Javier Martinez Canillas <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

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fbdev: Make support for userspace interfaces configurable

Add Kconfig option CONFIG_FB_DEVICE and make the virtual fbdev
device optional. If the new option has not been selected, fbdev
does not crea

fbdev: Make support for userspace interfaces configurable

Add Kconfig option CONFIG_FB_DEVICE and make the virtual fbdev
device optional. If the new option has not been selected, fbdev
does not create files in devfs, sysfs or procfs.

Most modern Linux systems run a DRM-based graphics stack that uses
the kernel's framebuffer console, but has otherwise deprecated fbdev
support. Yet fbdev userspace interfaces are still present.

The option makes it possible to use the fbdev subsystem as console
implementation without support for userspace. This closes potential
entry points to manipulate kernel or I/O memory via framebuffers. It
also prevents the execution of driver code via ioctl or sysfs, both
of which might allow malicious software to exploit bugs in the fbdev
code.

A small number of fbdev drivers require struct fbinfo.dev to be
initialized, usually for the support of sysfs interface. Make these
drivers depend on FB_DEVICE. They can later be fixed if necessary.

v3:
* effect -> affect in Kconfig help (Daniel)
v2:
* set FB_DEVICE default to y (Geert)
* comment on {get,put}_device() (Sam)
* Kconfig fixes (Sam)
* add TODO item about FB_DEVICE dependencies (Sam)

Signed-off-by: Thomas Zimmermann <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Sam Ravnborg <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

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staging: fbtft: Remove fb_watterott driver

This driver was made for a prototype and as far as I know it never went
into production because it was too slow. So let's remove it.

Acked-by: Sam Ravnbor

staging: fbtft: Remove fb_watterott driver

This driver was made for a prototype and as far as I know it never went
into production because it was too slow. So let's remove it.

Acked-by: Sam Ravnborg <[email protected]>
Signed-off-by: Noralf Trønnes <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: Fix Kconfig indentation

Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
$ sed -e 's/^ /\t/' -i */Kconfig

Signed-off-by: Kr

staging: fbtft: Fix Kconfig indentation

Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
$ sed -e 's/^ /\t/' -i */Kconfig

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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fbtft: Drop OF dependency

Now, since driver became OF independent, no need to keep OF dependency.

Signed-off-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/

fbtft: Drop OF dependency

Now, since driver became OF independent, no need to keep OF dependency.

Signed-off-by: Andy Shevchenko <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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drivers/staging/fbtft/fb_seps525: New driver for SEPS525 (Syncoam) LCD Controllers

The SEPS525 is a 160 RGB x 128 Dots, 262K Colors PM-OLED Display Driver and
Controller.

The controller can be foun

drivers/staging/fbtft/fb_seps525: New driver for SEPS525 (Syncoam) LCD Controllers

The SEPS525 is a 160 RGB x 128 Dots, 262K Colors PM-OLED Display Driver and
Controller.

The controller can be found on the NHD-1.69-160128UGC3
(Newhaven Display International, Inc.).

Datasheets:
Link: https://www.newhavendisplay.com/appnotes/datasheets/OLEDs/SEPS525.pdf

Signed-off-by: Michael Hennerich <[email protected]>
Co-developed-by: Beniamin Bia <[email protected]>
Signed-off-by: Beniamin Bia <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging/fbtft: Remove flexfb

flexfb was an attempt to write a generic fbtft driver that was abandoned.
All the displays it supports are supported by other fbtft drivers.

Signed-off-by: Noralf Trønn

staging/fbtft: Remove flexfb

flexfb was an attempt to write a generic fbtft driver that was abandoned.
All the displays it supports are supported by other fbtft drivers.

Signed-off-by: Noralf Trønnes <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging/fbtft: Remove fbtft_device

Commit c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor
interface") removed the gpio code from fbtft_device rendering it useless.

fbtft_device is a mo

staging/fbtft: Remove fbtft_device

Commit c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor
interface") removed the gpio code from fbtft_device rendering it useless.

fbtft_device is a module that was used on the Raspberry Pi to dynamically
add fbtft devices when the Pi didn't have Device Tree support.
Just remove the module since it's the responsibility of Device Tree, ACPI
or platform code to add devices.

Fixes: c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor interface")
Signed-off-by: Noralf Trønnes <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging/fbtft: Depend on OF

Commit c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor
interface") removed setting gpios via platform data. This means that
fbtft will now only work with Dev

staging/fbtft: Depend on OF

Commit c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor
interface") removed setting gpios via platform data. This means that
fbtft will now only work with Device Tree so set the dependency.

This also prevents a NULL pointer deref on non-DT platform because
fbtftops.request_gpios is not set in that case anymore.

Fixes: c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor interface")
Cc: stable <[email protected]>
Signed-off-by: Noralf Trønnes <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: add missing SPDX lines to Kconfig files

There are a few remaining drivers/staging/*/Kconfig files that do not
have SPDX identifiers in them. Add the correct GPL-2.0 identifier to
them to m

staging: add missing SPDX lines to Kconfig files

There are a few remaining drivers/staging/*/Kconfig files that do not
have SPDX identifiers in them. Add the correct GPL-2.0 identifier to
them to make scanning tools happy.

Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: remove unused FB_TFT_SSD1325 kconfig

Since nothing builds/depends on FB_TFT_SSD1325, we could remove it.

Signed-off-by: Corentin Labbe <[email protected]>
Signed-off-by: Greg Kroa

staging: fbtft: remove unused FB_TFT_SSD1325 kconfig

Since nothing builds/depends on FB_TFT_SSD1325, we could remove it.

Signed-off-by: Corentin Labbe <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: add adriver for SH1106

This patch adds support for the SH1106 OLED controller chip.

It's similar to the SSD1306, however it supports only a subset of
commands and the internal video

staging: fbtft: add adriver for SH1106

This patch adds support for the SH1106 OLED controller chip.

It's similar to the SSD1306, however it supports only a subset of
commands and the internal video memory has a different width.

Major differences:
- Internal video memory has a width of 132 pixels
- Only a subset of commands is supported
- Only page addressing mode is supported, no support for vertical and
horizontal addressing
- SPI frequency limited to 2 MHz according to the datasheet

Successfully tested with a 1.3" OLED display with this chip and
SPI interface.

Signed-off-by: Heiner Kallweit <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Staging: fbtft: add ssd1325 controller support

That patch adds support for SSD1325 controller.
That is 4bpp grayscale OLED display controller present in several
displays eq: Winstar WEX012864

Signe

Staging: fbtft: add ssd1325 controller support

That patch adds support for SSD1325 controller.
That is 4bpp grayscale OLED display controller present in several
displays eq: Winstar WEX012864

Signed-off-by: Alexey Mednyy <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Staging: fbtft: add ssd1305 controller support

That patch adds support for SSD1305 controller.
That is monochrome OLED display controller present in several
displays eq: Winstar WEX012864

Signed-of

Staging: fbtft: add ssd1305 controller support

That patch adds support for SSD1305 controller.
That is monochrome OLED display controller present in several
displays eq: Winstar WEX012864

Signed-off-by: Alexey Mednyy <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: add support for ST7789V display controller

This patch adds support for the Sitronix ST7789V display controller.
The controller is intended for small color displays with a resolution

staging: fbtft: add support for ST7789V display controller

This patch adds support for the Sitronix ST7789V display controller.
The controller is intended for small color displays with a resolution
of up to 320x240 pixels.

Signed-off-by: Dennis Menschel <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: Allow compile test of GPIO consumers if !GPIOLIB

The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GP

staging: fbtft: Allow compile test of GPIO consumers if !GPIOLIB

The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.

Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.

Signed-off-by: Geert Uytterhoeven <[email protected]>
Acked-by: Linus Walleij <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Staging: fbtft: Add support for the Ultrachip UC1611 LCD controller

This is a driver chip for 240x160 4-bit greyscale LCDs.
It is capable of 4-wire (8 bit) or 3-wire (9 bit) SPI that have both been

Staging: fbtft: Add support for the Ultrachip UC1611 LCD controller

This is a driver chip for 240x160 4-bit greyscale LCDs.
It is capable of 4-wire (8 bit) or 3-wire (9 bit) SPI that have both been
tested. (It also has a 6800 or 8080-style parallel interface, but I have
not included support for it.)

Signed-off-by: Henri Chain <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: Add support for Himax HX8357D controller

The Himax HX8357D is used e.g. by the Adafruit PITFT Plus 3.5".
Adafruit added HX8357D support to an own fork of fbtft and support
Raspbian o

staging: fbtft: Add support for Himax HX8357D controller

The Himax HX8357D is used e.g. by the Adafruit PITFT Plus 3.5".
Adafruit added HX8357D support to an own fork of fbtft and support
Raspbian only (https://github.com/adafruit/adafruit-rpi-fbtft/).
They don't intend to push it upstream but gave me the ok to do so.
Original author: Sean Cross <[email protected]>

I just applied small changes to the driver to align it with the other
fbtft drivers.
- add "compatible" argument to FBTFT_REGISTER_DRIVER call
- add missing MODULE_ALIAS declarations

Tested successfully with this display on an RPI2 under Arch Linux ARM
(kernel 3.18.13).

Signed-off-by: Heiner Kallweit <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Staging: fixed multiple spelling errors.

Fixed multiple spelling errors.

Signed-off-by: Carlos E. Garcia <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

staging: fbtft: Add support for ili9163 controller

Driver for ili9163-based displays (for example: Nokia 5110)

Signed-off-by: Kozhevnikov Anatoly <[email protected]>
Signed-off-by: Greg Kroah-Har

staging: fbtft: Add support for ili9163 controller

Driver for ili9163-based displays (for example: Nokia 5110)

Signed-off-by: Kozhevnikov Anatoly <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: add fbtft_device driver

This commit adds the fbtft_device driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-ele

staging: fbtft: add fbtft_device driver

This commit adds the fbtft_device driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <[email protected]>
Signed-off-by: Noralf Tronnes <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: add flexfb driver

This commit adds the flexfb driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <[email protected]>

staging: fbtft: add flexfb driver

This commit adds the flexfb driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <[email protected]>
Signed-off-by: Noralf Tronnes <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: add fb_watterott driver

This commit adds the fb_watterott driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-ele

staging: fbtft: add fb_watterott driver

This commit adds the fb_watterott driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <[email protected]>
Signed-off-by: Noralf Tronnes <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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staging: fbtft: add fb_upd161704 driver

This commit adds the fb_upd161704 driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-ele

staging: fbtft: add fb_upd161704 driver

This commit adds the fb_upd161704 driver from the fbtft project at
https://github.com/notro/fbtft.

Signed-off-by: Thomas Petazzoni <[email protected]>
Signed-off-by: Noralf Tronnes <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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