Commit Graph

101 Commits

Author SHA1 Message Date
Marek Vasut
ebd267b2e3 drm/stm: repair runtime power management
Add missing pm_runtime_get_sync() into ltdc_crtc_atomic_enable() to
match pm_runtime_put_sync() in ltdc_crtc_atomic_disable(), otherwise
the LTDC might suspend via runtime PM, disable clock, and then fail
to resume later on.

The test which triggers it is roughly -- run qt5 application which
uses eglfs platform and etnaviv, stop the application, sleep for 15
minutes, run the application again. This leads to a timeout waiting
for vsync, because the LTDC has suspended, but did not resume.

Fixes: 35ab6cfbf2 ("drm/stm: support runtime power management")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Yannick Fertré <yannick.fertre@st.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
To: dri-devel@lists.freedesktop.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Tested-by: Yannick Fertre <yannick.fertre@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200229221649.90813-1-marex@denx.de
2020-07-08 11:47:01 +02:00
Yannick Fertre
a790ababbe drm/stm: ltdc: remove call of pm-runtime functions
It is not necessary to suspend or stop the ltdc clocks
to modify the pixel clock.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200701120402.6444-1-yannick.fertre@st.com
2020-07-08 11:46:26 +02:00
Thomas Zimmermann
6f9746a5c0 drm/stm: Set GEM CMA functions with DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE
DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE sets the functions in
struct drm_driver to their defaults. No functional changes are
made.

v2:
	* update for DRM_GEM_CMA_DRIVER_OPS_WITH_DUMB_CREATE

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200605073247.4057-35-tzimmermann@suse.de
2020-06-10 09:05:32 +02:00
Thomas Zimmermann
c614fa22fd drm/stm: Use GEM CMA object functions
Create GEM objects with drm_gem_cma_create_object_default_funcs(), which
allocates the object and sets CMA's default object functions. Corresponding
callbacks in struct drm_driver are cleared. No functional changes are made.

Driver and object-function instances use the same callback functions, with
the exception of vunmap. The implementation of vunmap is empty and left out
in CMA's default object functions.

v3:
	* convert to DRIVER_OPS macro in a separate patch

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200605073247.4057-34-tzimmermann@suse.de
2020-06-10 09:05:25 +02:00
Yannick Fertre
b430ff7ef8 drm/stm: ltdc: check number of endpoints
Number of endpoints could exceed the fix value MAX_ENDPOINTS(2).
Instead of increase simply this value, the number of endpoint
could be read from device tree. Load sequence has been a little
rework to take care of several panel or bridge which can be
connected/disconnected or enable/disable.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1582877258-1112-1-git-send-email-yannick.fertre@st.com
2020-04-27 15:42:12 +02:00
Daniel Vetter
967be0ffa6 drm/stm: Drop explicit drm_mode_config_cleanup call
It's right above the drm_dev_put().

This is made possible by a preceeding patch which added a drmm_
cleanup action to drm_mode_config_init(), hence all we need to do to
ensure that drm_mode_config_cleanup() is run on final drm_device
cleanup is check the new error code for _init().

Aside: Another driver with a bit much devm_kzalloc, which should
probably use drmm_kzalloc instead ...

v2: Explain why this cleanup is possible (Laurent).

v3: Use drmm_mode_config_init() for more clarity (Sam, Thomas)

Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Yannick Fertre <yannick.fertre@st.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Link: https://patchwork.freedesktop.org/patch/msgid/20200323144950.3018436-39-daniel.vetter@ffwll.ch
2020-03-26 16:06:00 +01:00
Laurent Pinchart
a25b988ff8 drm/bridge: Extend bridge API to disable connector creation
Most bridge drivers create a DRM connector to model the connector at the
output of the bridge. This model is historical and has worked pretty
well so far, but causes several issues:

- It prevents supporting more complex display pipelines where DRM
connector operations are split over multiple components. For instance a
pipeline with a bridge connected to the DDC signals to read EDID data,
and another one connected to the HPD signal to detect connection and
disconnection, will not be possible to support through this model.

- It requires every bridge driver to implement similar connector
handling code, resulting in code duplication.

- It assumes that a bridge will either be wired to a connector or to
another bridge, but doesn't support bridges that can be used in both
positions very well (although there is some ad-hoc support for this in
the analogix_dp bridge driver).

In order to solve these issues, ownership of the connector should be
moved to the display controller driver (where it can be implemented
using helpers provided by the core).

Extend the bridge API to allow disabling connector creation in bridge
drivers as a first step towards the new model. The new flags argument to
the bridge .attach() operation allows instructing the bridge driver to
skip creating a connector. Unconditionally set the new flags argument to
0 for now to keep the existing behaviour, and modify all existing bridge
drivers to return an error when connector creation is not requested as
they don't support this feature yet.

The change is based on the following semantic patch, with manual review
and edits.

@ rule1 @
identifier funcs;
identifier fn;
@@
 struct drm_bridge_funcs funcs = {
 	...,
 	.attach = fn
 };

@ depends on rule1 @
identifier rule1.fn;
identifier bridge;
statement S, S1;
@@
 int fn(
 	struct drm_bridge *bridge
+	, enum drm_bridge_attach_flags flags
 )
 {
 	... when != S
+	if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) {
+		DRM_ERROR("Fix bridge driver to make connector optional!");
+		return -EINVAL;
+	}
+
 	S1
 	...
 }

@ depends on rule1 @
identifier rule1.fn;
identifier bridge, flags;
expression E1, E2, E3;
@@
 int fn(
 	struct drm_bridge *bridge,
 	enum drm_bridge_attach_flags flags
 ) {
 <...
 drm_bridge_attach(E1, E2, E3
+	, flags
 )
 ...>
 }

@@
expression E1, E2, E3;
@@
 drm_bridge_attach(E1, E2, E3
+	, 0
 )

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-10-laurent.pinchart@ideasonboard.com
2020-02-26 13:31:23 +02:00
Thomas Zimmermann
9661510e51 drm/stm: Convert to CRTC VBLANK callbacks
VBLANK callbacks in struct drm_driver are deprecated in favor of
their equivalents in struct drm_crtc_funcs. Convert stm over.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200123135943.24140-16-tzimmermann@suse.de
2020-02-13 13:10:09 +01:00
Thomas Zimmermann
b70fbfc7d5 drm/stm: Convert to struct drm_crtc_helper_funcs.get_scanout_position()
The callback struct drm_driver.get_scanout_position() is deprecated in
favor of struct drm_crtc_helper_funcs.get_scanout_position(). Convert stm
over.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Tested-by: Yannick Fertré <yannick.fertre@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200123135943.24140-15-tzimmermann@suse.de
2020-02-13 13:09:22 +01:00
Etienne Carriere
1f7b71f20a drm/stm: dsi: stm mipi dsi doesn't print error on probe deferral
Change DSI driver to not print an error trace when probe
is deferred for a clock resource.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1579602245-7577-1-git-send-email-yannick.fertre@st.com
2020-02-04 11:47:43 +01:00
Yannick Fertre
a6bd58c51a drm/stm: ltdc: check crtc state before enabling LIE
Following investigations of a hardware bug, the LIE interrupt
can occur while the display controller is not activated.
LIE interrupt (vblank) don't have to be set if the CRTC is not
enabled.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1579601650-7055-1-git-send-email-yannick.fertre@st.com
2020-02-04 11:40:32 +01:00
Yannick Fertre
544aa6cefb drm/stm: ltdc: add number of interrupts
The number of interrupts depends on the ltdc version.
Don't try to get interrupt which not exist, avoiding
kernel warning messages.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1579601632-7001-1-git-send-email-yannick.fertre@st.com
2020-02-04 11:38:59 +01:00
Yannick Fertré
f412af187a drm/stm: ltdc: move pinctrl to encoder mode set
The pin control must be set to default as soon as possible to
establish a good video link between tv & bridge hdmi
(encoder mode set is call before encoder enable).

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1574850218-13257-1-git-send-email-yannick.fertre@st.com
2019-12-20 13:30:42 +01:00
Heiko Stuebner
25ed8aeb9c drm/bridge/synopsys: dsi: driver-specific configuration of phy timings
The timing values for dw-dsi are often dependent on the used display and
according to Philippe Cornu will most likely also depend on the used phy
technology in the soc-specific implementation.

To solve this and allow specific implementations to define them as needed
add a new get_timing callback to phy_ops and call this from the dphy_timing
function to retrieve the necessary values for the specific mode.

Right now this handles the hs2lp + lp2hs where Rockchip SoCs need handling
according to the phy speed, while STM seems to be ok with static values.

changes in v5:
- rebase on 5.5-rc1
- merge into px30 dsi series to prevent ordering conflicts

changes in v4:
- rebase to make it directly fit on top of drm-misc-next after all

changes in v3:
- check existence of phy_ops->get_timing in __dw_mipi_dsi_probe()
- emit actual error when get_timing() call fails
- add tags from Philippe and Yannick

changes in v2:
- add driver-specific handling, don't force all bridge users to use
  the same timings, as suggested by Philippe

Suggested-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Tested-by: Yannick Fertre <yannick.fertre@st.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191209143130.4553-2-heiko@sntech.de
2019-12-16 12:01:58 +01:00
Yannick Fertré
1e6962041c drm/stm: dsi: higher pll out only in video burst mode
In order to better support video non-burst modes,
the +20% on pll out is added only in burst mode.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Reviewed-by: Yannick Fertré <yannick.fertre@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1568278589-20400-1-git-send-email-yannick.fertre@st.com
2019-09-16 15:14:10 +02:00
Yannick Fertré
92a57b3fb5 drm/stm: ltdc: add pinctrl for DPI encoder mode
The implementation of functions encoder_enable and encoder_disable
make possible to control the pinctrl according to the encoder type.
The pinctrl must be activated only if the encoder type is DPI.
This helps to move the DPI-related pinctrl configuration from
all the panel or bridge to the LTDC dt node.

Reviewed-by: Philippe Cornu <philippe.cornu@st.com>

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1567761708-31777-1-git-send-email-yannick.fertre@st.com
2019-09-09 11:30:54 +02:00
Laurent Pinchart
89958b7cd9 drm/bridge: panel: Infer connector type from panel by default
The drm panel bridge creates a connector using a connector type
explicitly passed by the display controller or bridge driver that
instantiates the panel bridge. Now that drm_panel reports its connector
type, we can use it to avoid passing an explicit (and often incorrect)
connector type to drm_panel_bridge_add() and
devm_drm_panel_bridge_add().

Several drivers report incorrect or unknown connector types to
userspace. Reporting a different type may result in a breakage. For that
reason, rename (devm_)drm_panel_bridge_add() to
(devm_)drm_panel_bridge_add_typed(), and add new
(devm_)drm_panel_bridge_add() functions that use the panel connector
type. Update all callers of (devm_)drm_panel_bridge_add() to the _typed
function, they will be converted one by one after testing.

The panel drivers have been updated with the following Coccinelle
semantic patch, with manual inspection and fixes to indentation.

@@
expression bridge;
expression dev;
expression panel;
identifier type;
@@
(
-bridge = drm_panel_bridge_add(panel, type);
+bridge = drm_panel_bridge_add_typed(panel, type);
|
-bridge = devm_drm_panel_bridge_add(dev, panel, type);
+bridge = devm_drm_panel_bridge_add_typed(dev, panel, type);
)

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904132804.29680-3-laurent.pinchart@ideasonboard.com
2019-09-08 19:04:23 +02:00
Ahmad Fatoum
8fabc9c310 drm/stm: attach gem fence to atomic state
To properly synchronize with other devices the fence from the GEM
object backing the framebuffer needs to be attached to the atomic
state, so the commit work can wait on fence signaling.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Tested-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190712084228.8338-1-l.stach@pengutronix.de
2019-07-25 12:00:09 +02:00
Sam Ravnborg
99a9388890 drm/stm: drop use of drmP.h
Drop use of the deprecated header file drmP.h
from the sole user in the stm driver.
Replace with necessary include files.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Yannick Fertre <yannick.fertre@st.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190630061922.7254-4-sam@ravnborg.org
2019-07-01 10:48:57 +02:00
Daniel Vetter
b8764eaf8a drm/stm: Drop drm_gem_prime_export/import
They're the default.

Aside: Would be really nice to switch the others over to
drm_gem_object_funcs.

Acked-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Yannick Fertre <yannick.fertre@st.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190614203615.12639-31-daniel.vetter@ffwll.ch
2019-06-21 20:10:10 +02:00
Daniel Vetter
0424fdaf88 drm/prime: Actually remove DRIVER_PRIME everywhere
Split out to make the functional changes stick out more.

All places where DRIVER_PRIME was used have been removed in previous
patches already.

v2: amdgpu gained DRIVER_SYNCOBJ_TIMELINE.

v3: amdgpu lost DRIVER_SYNCOBJ_TIMELINE.

v4: Don't add a space in i915_drv.c (Sam)

v5: Add note that previous patches removed all the DRIVER_PRIME users
already (Emil).

v6: Fixupe ingenic (new driver) while applying.

Cc: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: etnaviv@lists.freedesktop.org
Cc: freedreno@lists.freedesktop.org
Cc: intel-gfx@lists.freedesktop.org
Cc: lima@lists.freedesktop.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-aspeed@lists.ozlabs.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-tegra@vger.kernel.org
Cc: nouveau@lists.freedesktop.org
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: spice-devel@lists.freedesktop.org
Cc: virtualization@lists.linux-foundation.org
Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: xen-devel@lists.xenproject.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190617153924.414-1-daniel.vetter@ffwll.ch
2019-06-21 17:30:32 +02:00
Yannick Fertré
2b5d74fa3c drm/stm: drv: fix suspend/resume
Without this fix, the system can not go in "suspend" mode
due to an error in drv_suspend function.

Fixes: 35ab6cfbf2 ("drm/stm: support runtime power management")

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1560755897-5002-1-git-send-email-yannick.fertre@st.com
2019-06-20 17:03:24 +02:00
Yannick Fertré
ee7668bc68 drm/stm: dsi: add power on/off phy ops
These new physical operations are helpful to power_on/off the dsi
wrapper. If the dsi wrapper is powered in video mode, the display
controller (ltdc) register access will hang when DSI fifos are full.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Tested-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1558952499-15418-3-git-send-email-yannick.fertre@st.com
2019-06-12 09:09:18 +02:00
Yannick Fertré
35ab6cfbf2 drm/stm: support runtime power management
This patch enables runtime power management (runtime PM) support for
the display controller. pm_runtime_enable() and pm_runtime_disable()
are added during ltdc load and unload respectively.
pm_runtime_get_sync() and pm_runtime_put_sync() are added for ltdc
register access.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1559550722-14091-1-git-send-email-yannick.fertre@st.com
2019-06-07 14:45:22 +02:00
Yannick Fertré
630bec0c16 drm/stm: ltdc: No message if probe
Print display controller hardware version in debug mode only.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1559550694-14042-1-git-send-email-yannick.fertre@st.com
2019-06-07 14:45:08 +02:00
Maarten Lankhorst
4672b1d65f Merge remote-tracking branch 'drm/drm-next' into drm-misc-next
This picks up rc2 for us as well.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
2019-05-28 09:39:08 +02:00
Benjamin Gaignard
cf57fdc8e4 drm/stm: ltdc: restore calls to clk_{enable/disable}
Restore calls to clk_{enable/disable} deleted after applying the wrong
version of the patch

Fixes: fd6905fca4 ("drm/stm: ltdc: remove clk_round_rate comment")

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190527115830.15836-1-benjamin.gaignard@st.com
2019-05-28 09:21:34 +02:00
Dave Airlie
88cd7a2c1b drm-misc-next for v5.3, try #2:
Cross-subsystem Changes:
 - Fix device tree bindings in drm-misc-next after a botched merge.
 
 Core Changes:
 - Docbook fix for drm_hdmi_infoframe_set_hdr_metadata.
 
 Driver Changes:
 - mediatek: Fix compiler warning after merging the HDR series.
 - vc4: Rework binner bo handling.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAlznr6oACgkQ/lWMcqZw
 E8Mjbw//Rf2KeOyNYOpaUjzUIXjdGNKCSLG+MYbBzJLbdj6hywAi8tS6aS89d1qW
 CCBzPTUWFktuUVuHqIpZwNTPLndXzPvyC9v1BafKkF6Tkod1usBMaXD1266giAbC
 pKkJrejqeeQtYNfAQIGDzD/ndxXptw+mwK7DgRvMIQSGYuMCm+p5cG0RBtLV7Ijv
 fXIromzIQ+YUuOIyGRgmXW9zDUaieztovrLtIzpYALzTPZb5dqrJiuv3SKIiB4EK
 mlTprRqHbHpYLHHNhFrO2blfi/50+SThEHvUBP8rkMf3nu3nhQSMQrPtxJSfL71e
 1nAWvIYkLY7lKid7ugFvsZL+1L0zgG6XnsqHs5/x5x/LGDK1jVCEGG/DdsXVjGFj
 XH8zdLBi3PrmwbKy/HHCh6QD5Iwtg4qm8Dfjjfil4XNQDI8pK8q8TaVMZETn3YRC
 63JtZq8nBnrWgT57N/28apkymsHdz2QK99Yyc+GflFhhHsoNy6LhP+OqzW11rIas
 ANxZrF5CR8rudtoo2QeMkHcvkbIvDTQOPPuW6LXdXuqkhi91NFmgkxCCecFfpO74
 QvTiBQHrlb8zqTMZJ/j6uSBTFNOXI2NxXTKUBMJ2O3FcyVqvpL+HutVPcBuIw3mM
 FNvCI1M9rVH1qFOZ+t1y9ceebuHPy6xYwuak6fKDwzOwJOmOMFI=
 =2K7c
 -----END PGP SIGNATURE-----

Merge tag 'drm-misc-next-2019-05-24' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.3, try #2:

UAPI Changes:
- Add HDR source metadata property.
- Make drm.h compile on GNU/kFreeBSD by including stdint.h
- Clarify how the userspace reviewer has to review new kernel UAPI.
- Clarify that for using new UAPI, merging to drm-next or drm-misc-next should be enough.

Cross-subsystem Changes:
- video/hdmi: Add unpack function for DRM infoframes.
- Device tree bindings:
  * Updating a property for Mali Midgard GPUs
  * Updating a property for STM32 DSI panel
  * Adding support for FriendlyELEC HD702E 800x1280 panel
  * Adding support for Evervision VGG804821 800x480 5.0" WVGA TFT panel
  * Adding support for the EDT ET035012DM6 3.5" 320x240 QVGA 24-bit RGB TFT.
  * Adding support for Three Five displays TFC S9700RTWV43TR-01B 800x480 panel
    with resistive touch found on TI's AM335X-EVM.
  * Adding support for EDT ETM0430G0DH6 480x272 panel.
- Add OSD101T2587-53TS driver with DT bindings.
- Add Samsung S6E63M0 panel driver with DT bindings.
- Add VXT VL050-8048NT-C01 800x480 panel with DT bindings.
- Dma-buf:
  - Make mmap callback actually optional.
  - Documentation updates.
  - Fix debugfs refcount inbalance.
  - Remove unused sync_dump function.
- Fix device tree bindings in drm-misc-next after a botched merge.

Core Changes:
- Add support for HDR infoframes and related EDID parsing.
- Remove prime sg_table caching, now done inside dma-buf.
- Add shiny new drm_gem_vram helpers for simple VRAM drivers;
  with some fixes to the new API on top.
- Small fix to job cleanup without timeout handler.
- Documentation fixes to drm_fourcc.
- Replace lookups of drm_format with struct drm_format_info;
  remove functions that become obsolete by this conversion.
- Remove double include in bridge/panel.c and some drivers.
- Remove drmP.h include from drm/edid and drm/dp.
- Fix null pointer deref in drm_fb_helper_hotplug_event().
- Remove most members from drm_fb_helper_crtc, only mode_set is kept.
- Remove race of fb helpers with userspace; only restore mode
  when userspace is not master.
- Move legacy setup from drm_file.c to drm_legacy_misc.c
- Rework scheduler job destruction.
- drm/bus was removed, remove from TODO.
- Add __drm_atomic_helper_crtc_reset() to subclass crtc_state,
  and convert some drivers to use it (conversion is not complete yet).
- Bump vblank timeout wait to 100 ms for atomic.
- Docbook fix for drm_hdmi_infoframe_set_hdr_metadata.

Driver Changes:
- sun4i: Use DRM_GEM_CMA_VMAP_DRIVER_OPS instead of definining manually.
- v3d: Small cleanups, adding support for compute shaders,
       reservation/synchronization fixes and job management refactoring,
       fixes MMU and debugfs.
- lima: Fix null pointer in irq handler on startup, set default timeout for scheduled jobs.
- stm/ltdc: Assorted fixes and adding FB modifier support.
- amdgpu: Avoid hw reset if guilty job was already signaled.
- virtio: Add seqno to fences, add trace events, use correct flags for fence allocation.
- Convert AST, bochs, mgag200, vboxvideo, hisilicon to the new drm_gem_vram API.
- sun6i_mipi_dsi: Support DSI GENERIC_SHORT_WRITE_2 transfers.
- bochs: Small fix to use PTR_RET_OR_ZERO and driver unload.
- gma500: header fixes
- cirrus: Remove unused files.
- mediatek: Fix compiler warning after merging the HDR series.
- vc4: Rework binner bo handling.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/052875a5-27ba-3832-60c2-193d950afdff@linux.intel.com
2019-05-28 08:59:11 +10:00
Yannick Fertré
fa6251a747 drm/stm: dsi: check hardware version
Check version of DSI hardware IP. Only versions 1.30 & 1.31
are supported.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1557500579-19720-1-git-send-email-yannick.fertre@st.com
2019-05-24 10:30:46 +02:00
Yannick Fertré
fd6905fca4 drm/stm: ltdc: remove clk_round_rate comment
Clk_round_rate returns rounded clock without changing
the hardware in any way.
This function couldn't replace set_rate/get_rate calls.
Todo comment has been removed & a new log inserted.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1557500600-19771-1-git-send-email-yannick.fertre@st.com
2019-05-24 10:30:46 +02:00
Thomas Gleixner
ec8f24b7fa treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21 10:50:46 +02:00
Maxime Ripard
b0f986b4b0
drm: Remove users of drm_format_info_plane_cpp
drm_format_info_plane_cpp() basically just returns the cpp array content
found in the drm_format_info structure.

Since it's pretty trivial, let's remove the function and have the users use
the array directly

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c0a78c87cd0410a1819edad2794ad06543c85bb5.1558002671.git-series.maxime.ripard@bootlin.com
2019-05-20 13:35:56 +02:00
Maxime Ripard
24c478ead0
drm/fourcc: Pass the format_info pointer to drm_format_plane_cpp
So far, the drm_format_plane_cpp function was operating on the format's
fourcc and was doing a lookup to retrieve the drm_format_info structure and
return the cpp.

However, this is inefficient since in most cases, we will have the
drm_format_info pointer already available so we shouldn't have to perform a
new lookup. Some drm_fourcc functions also already operate on the
drm_format_info pointer for that reason, so the API is quite inconsistent
there.

Let's follow the latter pattern and remove the extra lookup while being a
bit more consistent. In order to be extra consistent, also rename that
function to drm_format_info_plane_cpp and to a static function in the
header to match the current policy.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/32aa13e53dbc98a90207fd290aa8e79f785fb11e.1558002671.git-series.maxime.ripard@bootlin.com
2019-05-20 13:33:46 +02:00
Yannick Fertré
f569aa9b1c drm/stm: dsi: add regulator support
Add support of regulator for the phy part of the DSI
controller.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1557826556-10079-3-git-send-email-yannick.fertre@st.com
2019-05-17 12:11:31 +02:00
Fabien Dessenne
1f358bc6f2 drm/stm: ltdc: return appropriate error code during probe
During probe, return the "clk_get" error value instead of -ENODEV.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1556114601-30936-3-git-send-email-fabien.dessenne@st.com
2019-05-06 09:22:15 +02:00
Fabien Dessenne
9e759fc7dc drm/stm: ltdc: manage the get_irq probe defer case
Manage the -EPROBE_DEFER error case for the ltdc IRQ.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1556114601-30936-2-git-send-email-fabien.dessenne@st.com
2019-05-06 09:21:16 +02:00
Yannick Fertré
e7c03dbaaa drm/stm: ltdc: add modifier support
Add support of DRM_FORMAT_MOD_LINEAR modifier.

Signed-off-by: Mickael Reulier <mickael.reulier@st.com>
Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1554283514-2960-1-git-send-email-yannick.fertre@st.com
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
2019-04-24 14:22:28 +02:00
Yannick Fertré
f42f540b9d drm/stm: ltdc: reset controller to avoid partial refresh
Display controller reset must be done as soon as possible after enable
the clock to avoid partial refresh on screen.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1554283453-2879-1-git-send-email-yannick.fertre@st.com
2019-04-24 14:07:54 +02:00
Yannick Fertré
77756ad6d0 drm/stm: ltdc: limit number of layer to avoid memory overflow
If the number of layer is greater than LTDC_MAX_LAYER, we can have
memory overflow when reading plane_fpsi[].

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1554283216-2700-1-git-send-email-yannick.fertre@st.com
2019-04-24 13:52:06 +02:00
Yannick Fertré
8ceb8568d6 drm/stm: ltdc: update planes at next vblank to avoid partial refresh
Plane updates must be synchronized on vblank with the shadow register mechanism
to avoid partial refresh on screen.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1554103457-29595-1-git-send-email-yannick.fertre@st.com
2019-04-24 13:51:47 +02:00
Yannick Fertré
c64d1cb6b1 drm/stm: ltdc: fix data enable polarity
Wrong DISPLAY_FLAGS used to set the data enable polarity.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1553874620-31468-1-git-send-email-yannick.fertre@st.com
2019-04-24 13:51:27 +02:00
Philippe Cornu
0cabb0859f drm/stm: ltdc: use DRM_WARN for fifo & transfer error messages
Use DRM_WARN() instead of DRM_DEBUG_DRIVER() to better
inform the user in case of fifo underruns or
transfer errors.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1553874548-31366-1-git-send-email-yannick.fertre@st.com
2019-04-24 13:51:09 +02:00
Yannick Fertré
798e5b2a4f drm/stm: ltdc: disable hw interrupts before its handler init
Interrupt register must be disabled before call of
devm_request_threaded_irq function to avoid dummy interruption.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1553874485-31259-1-git-send-email-yannick.fertre@st.com
2019-04-24 13:50:46 +02:00
Yannick Fertré
df61c77665 drm/stm: add sleep power management
Implements system sleep power management ops.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1553156120-13851-1-git-send-email-yannick.fertre@st.com
2019-04-01 11:00:18 +02:00
Yannick Fertré
1861a1ffbc drm/stm: dw_mipi_dsi-stm: add sleep power management
Implements system sleep power management ops.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
Acked-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1553156033-13792-1-git-send-email-yannick.fertre@st.com
2019-04-01 11:00:05 +02:00
Arnd Bergmann
a34ced4541 drm/stm: fix CONFIG_FB dependency
The DRM_STM driver can be built independently of the framebuffer
layer, but it causes a Kconfig warning:

WARNING: unmet direct dependencies detected for FB_PROVIDE_GET_FB_UNMAPPED_AREA
  Depends on [n]: HAS_IOMEM [=y] && FB [=n]
  Selected by [y]:
  - DRM_STM [=y] && HAS_IOMEM [=y] && DRM [=y] && (ARCH_STM32 [=n] || ARCH_MULTIPLATFORM [=y])

Selecting FB_PROVIDE_GET_FB_UNMAPPED_AREA actually has no effect
if CONFIG_FB is disabled, so we can make it a conditional 'select'
instead.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190307155323.2949975-1-arnd@arndb.de
2019-03-11 15:40:29 +01:00
Daniel Vetter
fcd70cd36b drm: Split out drm_probe_helper.h
Having the probe helper stuff (which pretty much everyone needs) in
the drm_crtc_helper.h file (which atomic drivers should never need) is
confusing. Split them out.

To make sure I actually achieved the goal here I went through all
drivers. And indeed, all atomic drivers are now free of
drm_crtc_helper.h includes.

v2: Make it compile. There was so much compile fail on arm drivers
that I figured I'll better not include any of the acks on v1.

v3: Massive rebase because i915 has lost a lot of drmP.h includes, but
not all: Through drm_crtc_helper.h > drm_modeset_helper.h -> drmP.h
there was still one, which this patch largely removes. Which means
rolling out lots more includes all over.

This will also conflict with ongoing drmP.h cleanup by others I
expect.

v3: Rebase on top of atomic bochs.

v4: Review from Laurent for bridge/rcar/omap/shmob/core bits:
- (re)move some of the added includes, use the better include files in
  other places (all suggested from Laurent adopted unchanged).
- sort alphabetically

v5: Actually try to sort them, and while at it, sort all the ones I
touch.

v6: Rebase onto i915 changes.

v7: Rebase once more.

Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Acked-by: CK Hu <ck.hu@mediatek.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: virtualization@lists.linux-foundation.org
Cc: etnaviv@lists.freedesktop.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: spice-devel@lists.freedesktop.org
Cc: amd-gfx@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-tegra@vger.kernel.org
Cc: xen-devel@lists.xen.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190117210334.13234-1-daniel.vetter@ffwll.ch
2019-01-24 13:20:42 +01:00
Sam Ravnborg
2a6b4990b1 drm/stm: prepare for drmP.h removal from drm_modeset_helper.h
The use of drmP.h is discouraged and removal of it from
drm_modeset_helper.h caused drm/stm to fail to build.

This patch introduce the necessary fixes to prepare for the
drmP.h removal from drm_modeset_helper.h.

Build tested on arm and x86 allmodconfig

v2:
- sort list of include files

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Yannick Fertre <yannick.fertre@st.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190119084014.5355-2-sam@ravnborg.org
2019-01-24 13:06:35 +01:00
Maxime Ripard
d2c20b5d37
Merge drm/drm-next into drm-misc-next
danvet needs a backmerge to ease the upcoming drmP.h rework

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
2019-01-24 11:03:16 +01:00
YueHaibing
a236a6698c drm/stm: ltdc: remove set but not used variable 'src_h'
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/stm/ltdc.c: In function 'ltdc_plane_atomic_check':
drivers/gpu/drm/stm/ltdc.c:694:13: warning:
 variable 'src_y' set but not used [-Wunused-but-set-variable]
  u32 src_x, src_y, src_w, src_h;
             ^
             ^
drivers/gpu/drm/stm/ltdc.c:694:6: warning:
 variable 'src_x' set but not used [-Wunused-but-set-variable]
  u32 src_x, src_y, src_w, src_h;
      ^

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1538131180-34108-1-git-send-email-yuehaibing@huawei.com
2019-01-21 10:01:07 +01:00