Drivers that what to allocate VRAM GEM objects with additional fields
can now do this by implementing struct drm_driver.gem_create_object.

v3:
	* separately check allocation failure in if/else branches
	  before upcast to gbo
v2:
	* only cast to gbo within if branch; set gbo directly
	  in else branch
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106125745.13797-9-tzimmermann@suse.de

TTM is an implementation detail of the VRAM helpers and therefore
shouldn't be exposed to the callers. There's only one correct value
for the BO device anyway, which is the one stored in the DRM device.

So remove struct ttm_bo_device from the VRAM-helper interface and
use the device's VRAM manager unconditionally. The GEM initializer
function fails if the VRAM manager has not been initialized.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106125745.13797-8-tzimmermann@suse.de

The flag 'interruptible', which is passed to various functions,
is always set to be false. Remove it and hard-code the value.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Suggested-by: NDaniel Vetter <daniel@ffwll.ch>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106125745.13797-7-tzimmermann@suse.de

drm_bridge_state is extended to describe the input and output bus
configurations. These bus configurations are exposed through the
drm_bus_cfg struct which encodes the configuration of a physical
bus between two components in an output pipeline, usually between
two bridges, an encoder and a bridge, or a bridge and a connector.

The bus configuration is stored in drm_bridge_state separately for
the input and output buses, as seen from the point of view of each
bridge. The bus configuration of a bridge output is usually identical
to the configuration of the next bridge's input, but may differ if
the signals are modified between the two bridges, for instance by an
inverter on the board. The input and output configurations of a
bridge may differ if the bridge modifies the signals internally,
for instance by performing format conversion, or*modifying signals
polarities.

Bus format negotiation is automated by the core, drivers just have
to implement the ->atomic_get_{output,input}_bus_fmts() hooks if they
want to take part to this negotiation. Negotiation happens in reverse
order, starting from the last element of the chain (the one directly
connected to the display) up to the first element of the chain (the one
connected to the encoder).
During this negotiation all supported formats are tested until we find
one that works, meaning that the formats array should be in decreasing
preference order (assuming the driver has a preference order).

Note that the bus format negotiation works even if some elements in the
chain don't implement the ->atomic_get_{output,input}_bus_fmts() hooks.
In that case, the core advertises only MEDIA_BUS_FMT_FIXED and lets
the previous bridge element decide what to do (most of the time, bridge
drivers will pick a default bus format or extract this piece of
information from somewhere else, like a FW property).
Signed-off-by: NBoris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: NJonas Karlman <jonas@kwiboo.se>
[narmstrong: fixed doc in include/drm/drm_bridge.h:69 fmt->format]
Link: https://patchwork.freedesktop.org/patch/msgid/20200106143409.32321-5-narmstrong@baylibre.com

So that bridge drivers have a way to check/reject an atomic operation.
The drm_atomic_bridge_chain_check() (which is just a wrapper around
the ->atomic_check() hook) is called in place of
drm_bridge_chain_mode_fixup() (when ->atomic_check() is not implemented,
the core falls back on ->mode_fixup(), so the behavior should stay
the same for existing bridge drivers).
Signed-off-by: NBoris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: NJonas Karlman <jonas@kwiboo.se>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106143409.32321-4-narmstrong@baylibre.com

This way the drm_bridge_funcs interface is consistent with the rest of
the subsystem.

The only driver implementing those hooks (analogix DP) is patched too.
Signed-off-by: NBoris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: NJonas Karlman <jonas@kwiboo.se>
[narmstrong: renamed state as old_bridge_state in rcar_lvds_atomic_disable]
Link: https://patchwork.freedesktop.org/patch/msgid/20200106143409.32321-3-narmstrong@baylibre.com

One of the last remaining objects to not have its atomic state.

This is being motivated by our attempt to support runtime bus-format
negotiation between elements of the bridge chain.
This patch just paves the road for such a feature by adding a new
drm_bridge_state object inheriting from drm_private_obj so we can
re-use some of the existing state initialization/tracking logic.
Signed-off-by: NBoris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Reviewed by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: NJonas Karlman <jonas@kwiboo.se>
Link: https://patchwork.freedesktop.org/patch/msgid/20200106143409.32321-2-narmstrong@baylibre.com

This reverts commit d2c755e66617620b729041c625a6396c81d1231c
("drm: atmel-hlcdc: enable sys_clk during initalization."). With
commit "drm: atmel-hlcdc: enable clock before configuring timing engine"
there is no need for this patch. Code is also simpler.

Cc: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun@microchip.com>
Signed-off-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1576672109-22707-7-git-send-email-claudiu.beznea@microchip.com

The intention was to only select a higher pixel-clock rate than the
requested, if a slight overclocking would result in a rate significantly
closer to the requested rate than if the conservative lower pixel-clock
rate is selected. The fixed patch has the logic the other way around and
actually prefers the higher frequency. Fix that.
Signed-off-by: NPeter Rosin <peda@axentia.se>
Signed-off-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Fixes: 9946a3a9 ("drm/atmel-hlcdc: allow selecting a higher pixel-clock than requested")
Reported-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Tested-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Cc: Boris Brezillon <boris.brezillon@bootlin.com>
Cc: <stable@vger.kernel.org> # v4.20+
Link: https://patchwork.freedesktop.org/patch/msgid/1576672109-22707-6-git-send-email-claudiu.beznea@microchip.com

Changing pixel clock source without having this clock source enabled
will block the timing engine and the next operations after (in this case
setting ATMEL_HLCDC_CFG(5) settings in atmel_hlcdc_crtc_mode_set_nofb()
will fail). It is recomended (although in datasheet this is not present)
to actually enabled pixel clock source before doing any changes on timing
enginge (only SAM9X60 datasheet specifies that the peripheral clock and
pixel clock must be enabled before using LCD controller).

Fixes: 1a396789 ("drm: add Atmel HLCDC Display Controller support")
Signed-off-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: <stable@vger.kernel.org> # v4.0+
Link: https://patchwork.freedesktop.org/patch/msgid/1576672109-22707-3-git-send-email-claudiu.beznea@microchip.com

Doubled system clock should be used as pixel cock source only if this
is supported. This is emphasized by the value of
atmel_hlcdc_crtc::dc::desc::fixed_clksrc.

Fixes: a6eca2ab ("drm: atmel-hlcdc: add config option for clock selection")
Signed-off-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Cc: Boris Brezillon <bbrezillon@kernel.org>
Cc: <stable@vger.kernel.org> # v5.3+
Link: https://patchwork.freedesktop.org/patch/msgid/1576672109-22707-2-git-send-email-claudiu.beznea@microchip.com

The reg property in the example caused following warnings:

xinpeng,xpp055c272.example.dts:20.17-27: Warning (reg_format): /example-0/dsi@ff450000/panel@0:reg: property has invalid length (4 bytes) (#address-cells == 2, #size-cells == 1)

xinpeng,xpp055c272.example.dt.yaml: Warning (pci_device_bus_num): Failed prerequisite 'reg_format'
xinpeng,xpp055c272.example.dt.yaml: Warning (i2c_bus_reg): Failed prerequisite 'reg_format'
xinpeng,xpp055c272.example.dt.yaml: Warning (spi_bus_reg): Failed prerequisite 'reg_format'
xinpeng,xpp055c272.example.dts:18.21-24.15: Warning (avoid_default_addr_size): /example-0/dsi@ff450000/panel@0: Relying on default #address-cells value
xinpeng,xpp055c272.example.dts:18.21-24.15: Warning (avoid_default_addr_size): /example-0/dsi@ff450000/panel@0: Relying on default #size-cells value

Added #address-cells and #size-cells to silence the warning.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Reviewed-by: NHeiko Stuebner <heiko.stuebner@theobroma-systems.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200106181731.GA24294@ravnborg.org

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/bridge/cdns-dsi.c: In function ‘cdns_dsi_mode2cfg’:
drivers/gpu/drm/bridge/cdns-dsi.c:515:11: warning: variable ‘nlanes’
set but not used [-Wunused-but-set-variable]

It is never used, and so can be removed.
Signed-off-by: Nyu kuai <yukuai3@huawei.com>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191226121415.39483-1-yukuai3@huawei.com

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/bridge/cdns-dsi.c: In function
‘cdns_dsi_bridge_enable’:
drivers/gpu/drm/bridge/cdns-dsi.c:788:6: warning: variable ‘bpp’
set but not used [-Wunused-but-set-variable]

It is never used, and so can be removed.
Signed-off-by: Nyu kuai <yukuai3@huawei.com>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191226121207.2099-1-yukuai3@huawei.com

Fixes coccicheck warning:

drivers/gpu/drm/meson/meson_crtc.c:360:3-4: Unneeded semicolon
drivers/gpu/drm/meson/meson_plane.c:181:2-3: Unneeded semicolon
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: Nzhengbin <zhengbin13@huawei.com>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1576468701-69717-1-git-send-email-zhengbin13@huawei.com

The dw_hdmi_hw structure is only copied into another structure,
so make it const.

The opportunity for this change was found using Coccinelle.

Fixes: 7ed6c665 ("drm: bridge/dw_hdmi-ahb-audio: add audio driver")
Signed-off-by: NJulia Lawall <Julia.Lawall@inria.fr>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1577864614-5543-16-git-send-email-Julia.Lawall@inria.fr

This change makes information about VRAM consumption available on
debugfs. See

  /sys/kernel/debug/dri/0/vram-mm

for an overview of how VRAM is being used.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203083819.6643-6-tzimmermann@suse.de

The hibmc driver aligns scanlines to 16 bytes. By using the new pitch_align
argument of drm_gem_vram_fill_create_dumb(), convert hibmc over.

v2:
	* move changes to VRAM helpers into separate patch
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203083819.6643-5-tzimmermann@suse.de

Adding the pitch alignment as an argument to
drm_gem_vram_fill_create_dumb() allows to align scanlines to certain
offsets. A value of 0 disables scanline pitches.

v3:
	* only do power-of-2 test if pitch_align given; fails otherwise
	* mgag200: call drm_gem_vram_fill_create_dumb() with pitch_align
v2:
	* split of patch from related hibmc changes
	* test if scanline pitch is power of 2
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203083819.6643-4-tzimmermann@suse.de

The hibmc driver's struct hibmc_framebuffer stores a DRM framebuffer
with an associated GEM object. This functionality is also provided by
generic code. Switch hibmc over.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203083819.6643-3-tzimmermann@suse.de

There's nothing special about hibmc's fbdev emulation that is not
provided by the generic implementation. Switch over and remove the
driver's code.
Signed-off-by: NThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203083819.6643-2-tzimmermann@suse.de

Fix edid reading error when edid's block > 2.
Signed-off-by: NNickey Yang <nickey.yang@rock-chips.com>
Signed-off-by: NJohan Jonker <jbx6244@gmail.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191211203417.19448-1-jbx6244@gmail.com

Introduce PX30 LVDS support. This means adding the relevant helper
functions, a specific probe and also the initialization of a specific
PHY.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-10-miquel.raynal@bootlin.com

Requested, and we need v5.5-rc1 backported as our current branch is still based on v5.4.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>

Reorganize a bit the functions order to clarify the driver and separate
hardware independent and specific functions a bit. This change only moves
functions around, there is no functional change.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
[adapted to recent drm_panel_get_modes() param change ]
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-9-miquel.raynal@bootlin.com

Return errors instead of returning void from internal helpers. When
these helpers are called, check the returned value and print an error
message in this case and not blindly continue.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-8-miquel.raynal@bootlin.com

The probe function is highly adapted to the RK3288 specificities, move
all specific bits into an "rk3288_probe" function, also part of the
platform data.

The goal is to ease the addition of new flavors of Rockchip LVDS IPs.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-7-miquel.raynal@bootlin.com

Prepare the introduction of PX30 support by using
drm_encoder_helper_funcs as platform data instead of multiple register
names which are specific to rk3288 and not generic to all Rockchip
IPs. This way adding support for a new flavor of a similar IP will be
a matter of adding the relevant helper funcs.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-6-miquel.raynal@bootlin.com

Prepare the introduction of PX30 support by clarifying the function
prefixes.

We continue to prefix with 'rockchip_lvds_' generic functions that are
not specific to a single hardware. Functions implying hardware
modifications are now prefixed with 'rk3288_lvds_'.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-5-miquel.raynal@bootlin.com

Fix a #define indentation before adding more lines.

Fixes: 34cc0aa2 ("drm/rockchip: Add support for Rockchip Soc LVDS")
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-4-miquel.raynal@bootlin.com

PX30 SoCs use a single PHY shared by two display pipelines: MIPI DSI
and LVDS. In the case of the LVDS IP, document the possibility to fill
a PHY handle.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-3-miquel.raynal@bootlin.com

Document the PX30 LVDS compatible.
Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-2-miquel.raynal@bootlin.com

The LTK500HD1829 is 5.5" DSI display.

v5:
  - Fix some trivial checkpatch warnings while applying (sam)

changes in v4:
- drop error message if backlight not found, no other panel
  does that and if needed it should live in drm_panel_of_backlight
changes in v3:
- drop one more overlooked panel->drm access
Signed-off-by: NHeiko Stuebner <heiko.stuebner@theobroma-systems.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224112641.30647-3-heiko@sntech.de

The LTK500HD1829 is a 5.0" 720x1280 DSI display.

v3:
  - fixed example by adding address,size-cells (sam)

changes in v2:
- fix id (Maxime)
- drop port (Maxime)
Signed-off-by: NHeiko Stuebner <heiko.stuebner@theobroma-systems.com>
Acked-by: NMaxime Ripard <mripard@kernel.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224112641.30647-2-heiko@sntech.de

Shenzhen Leadtek Technology Co., Ltd. produces for example display
and touch panels.
Signed-off-by: NHeiko Stuebner <heiko.stuebner@theobroma-systems.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224112641.30647-1-heiko@sntech.de

Base on the somewhat similar Rocktech driver but adapted for
panel-specific init of the XPP055C272.

changes in v5:
- drop error message when backlight not found, no other panel
  does that and if needed it should live in drm_panel_of_backlight
changes in v4:
  none
changes in v3:
- remove wrong negative sync flags from display-mode to fix a display
  artifact of the output getting move a tiny bit to the right
changes in v2:
- move to drm-panel-internal backlight handling (Sam)
- adapt to changes that happened to drm_panel structs+functions (Sam)
- sort includes (Sam)
- drop unnecessary DRV_NAME constant (Sam)
- do mipi_dsi_dcs_exit_sleep_mode and mipi_dsi_dcs_set_display_on
  in panel prepare (not init_sequence) to keep symmetric (Sam)
Signed-off-by: NHeiko Stuebner <heiko.stuebner@theobroma-systems.com>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224112907.30758-3-heiko@sntech.de

The XPP055C272 is a 5.5" 720x1280 DSI display.

changes in v4:
- fix id (Maxime)
- drop port (Maxime)
changes in v2:
- add size info into binding title (Sam)
- add more required properties (Sam)
Signed-off-by: NHeiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: NSam Ravnborg <sam@ravnborg.org>
Acked-by: NMaxime Ripard <mripard@kernel.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224112907.30758-2-heiko@sntech.de

Shenzhen Xinpeng Technology Co., Ltd produces for example display panels.
Signed-off-by: NHeiko Stuebner <heiko.stuebner@theobroma-systems.com>
Acked-by: NSam Ravnborg <sam@ravnborg.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191224112907.30758-1-heiko@sntech.de

Found with scripts/coccinelle/misc/boolconv.cocci.
Signed-off-by: NAndrew F. Davis <afd@ti.com>
Cc: Jiri Kosina <trivial@kernel.org>
Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191016180424.23907-1-afd@ti.com

Simplify this function implementation by using a known wrapper function.

This issue was detected by using the Coccinelle software.
Signed-off-by: NMarkus Elfring <elfring@users.sourceforge.net>
Cc: Daniel Mack <daniel@zonque.org>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: YueHaibing <yuehaibing@huawei.com>
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Cc: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: NBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a1b804b1-43c2-327a-d6d1-df49aebec680@web.de