linux-stable.git/drivers/gpu/drm/bridge, branch v5.7.8

drm/bridge: fix stack usage warning on old gcc

2020-06-22T07:32:35+00:00

[ Upstream commit 78b0d99a68ecdc84728c99f4fef71942e9ecf35a ]

Some older versions of gcc badly optimize code that passes
an inline function argument into another function by reference,
causing huge stack usage:

drivers/gpu/drm/bridge/tc358768.c: In function 'tc358768_bridge_pre_enable':
drivers/gpu/drm/bridge/tc358768.c:840:1: error: the frame size of 2256 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]

Use a temporary variable as a workaround and add a comment pointing
to the gcc bug.

Fixes: ff1ca6397b1d ("drm/bridge: Add tc358768 driver")
Signed-off-by: Arnd Bergmann 
Reviewed-by: Tomi Valkeinen 
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20200428215408.4111675-1-arnd@arndb.de
Signed-off-by: Sasha Levin

drm/bridge: panel: Return always an error pointer in drm_panel_bridge_add()

2020-06-22T07:32:18+00:00

[ Upstream commit 30be3031087139061de4421bf52015931eaab569 ]

Since commit 89958b7cd955 ("drm/bridge: panel: Infer connector type from
panel by default"), drm_panel_bridge_add() and their variants can return
NULL and an error pointer. This is fine but none of the actual users of
the API are checking for the NULL value. Instead of change all the
users, seems reasonable to return an error pointer instead. So change
the returned value for those functions when the connector type is unknown.

Suggested-by: Laurent Pinchart 
Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20200416210654.2468805-1-enric.balletbo@collabora.com
Signed-off-by: Sasha Levin

drm: bridge: adv7511: Extend list of audio sample rates

2020-06-22T07:32:16+00:00

[ Upstream commit b97b6a1f6e14a25d1e1ca2a46c5fa3e2ca374e22 ]

ADV7511 support sample rates up to 192kHz. CTS and N parameters should
be computed accordingly so this commit extend the list up to maximum
supported sample rate.

Signed-off-by: Bogdan Togorean 
Reviewed-by: Andrzej Hajda 
Signed-off-by: Andrzej Hajda 
Link: https://patchwork.freedesktop.org/patch/msgid/20200413113513.86091-2-bogdan.togorean@analog.com
Signed-off-by: Sasha Levin

drm/bridge: anx6345: set correct BPC for display_info of connector

2020-04-14T17:30:36+00:00

Some drivers (e.g. sun4i-drm) need this info to decide whether they
need to enable dithering. Currently driver reports what panel supports
and if panel supports 8 we don't get dithering enabled.

Hardcode BPC to 6 for now since that's the only BPC
that driver supports.

Fixes: 6aa192698089 ("drm/bridge: Add Analogix anx6345 support")
Signed-off-by: Vasily Khoruzhick 
Acked-by: Jernej Skrabec 
Signed-off-by: Jernej Skrabec 
Link: https://patchwork.freedesktop.org/patch/msgid/20200329222253.2941405-1-anarsoul@gmail.com

drm/bridge: analogix_dp: Split bind() into probe() and real bind()

2020-04-09T08:29:35+00:00

Analogix_dp driver acquires all its resources in the ->bind() callback,
what is a bit against the component driver based approach, where the
driver initialization is split into a probe(), where all resources are
gathered, and a bind(), where all objects are created and a compound
driver is initialized.

Extract all the resource related operations to analogix_dp_probe() and
analogix_dp_remove(), then call them before/after registration of the
device components from the main Exynos DP and Rockchip DP drivers. Also
move the plat_data initialization to the probe() to make it available for
the analogix_dp_probe() function.

This fixes the multiple calls to the bind() of the DRM compound driver
when the DP PHY driver is not yet loaded/probed:

[drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations
exynos-drm exynos-drm: bound 14400000.fimd (ops fimd_component_ops [exynosdrm])
exynos-drm exynos-drm: bound 14450000.mixer (ops mixer_component_ops [exynosdrm])
exynos-dp 145b0000.dp-controller: no DP phy configured
exynos-drm exynos-drm: failed to bind 145b0000.dp-controller (ops exynos_dp_ops [exynosdrm]): -517
exynos-drm exynos-drm: master bind failed: -517
...
[drm] Exynos DRM: using 14400000.fimd device for DMA mapping operations
exynos-drm exynos-drm: bound 14400000.fimd (ops hdmi_enable [exynosdrm])
exynos-drm exynos-drm: bound 14450000.mixer (ops hdmi_enable [exynosdrm])
exynos-drm exynos-drm: bound 145b0000.dp-controller (ops hdmi_enable [exynosdrm])
exynos-drm exynos-drm: bound 14530000.hdmi (ops hdmi_enable [exynosdrm])
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
Console: switching to colour frame buffer device 170x48
exynos-drm exynos-drm: fb0: exynosdrmfb frame buffer device
[drm] Initialized exynos 1.1.0 20180330 for exynos-drm on minor 1
...

Signed-off-by: Marek Szyprowski 
Acked-by: Andy Yan 
Reviewed-by: Andrzej Hajda 
Signed-off-by: Andrzej Hajda 
Link: https://patchwork.freedesktop.org/patch/msgid/20200310103427.26048-1-m.szyprowski@samsung.com
(cherry picked from commit 83a196773b8bc6702f49df1eddc848180e350340)
Signed-off-by: Maxime Ripard

Merge v5.6 into drm-next

2020-03-31T05:15:47+00:00

msm needed rc6, so I just went and merged release
(msm has been in drm-next outside of this tree)

Signed-off-by: Dave Airlie

Merge tag 'drm-misc-next-2020-03-17' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2020-03-19T01:01:58+00:00

drm-misc-next for 5.7:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - dp-mst: Remove register_connector callback, add drm_dp_destroy_connector
  - Changes to scnprintf on multiple instances

Driver Changes:
  - meson: Support for YUV420
  - panel: Support Ortustech COM37H3M, idk-1110wr and idk-2121wr,
           multiple dotclock fixes

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20200317082858.lubmvlmvoprn2tuh@gilmour.lan

Merge tag 'drm-misc-next-2020-03-09' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2020-03-12T02:42:56+00:00

drm-misc-next for 5.7:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:

Driver Changes:
 - fb-helper: Remove drm_fb_helper_{add,add_all,remove}_one_connector
 - fbdev: some cleanups and dead-code removal
 - Conversions to simple-encoder
 - zero-length array removal
 - Panel: panel-dpi support in panel-simple, Novatek NT35510, Elida
   KD35T133,

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20200309135439.dicfnbo4ikj4tkz7@gilmour

Merge v5.6-rc5 into drm-next

2020-03-10T21:27:21+00:00

Requested my mripard for some misc patches that need this as a base.

Signed-off-by: Dave Airlie

drm/bridge: synopsys: dw-hdmi: allow ycbcr420 modes for >= 0x200a

2020-03-10T09:51:24+00:00

Now the DW-HDMI Controller supports the HDMI2.0 modes, enable support
for these modes in the connector if the platform supports them.
We limit these modes to DW-HDMI IP version >= 0x200a which
are designed to support HDMI2.0 display modes.

Signed-off-by: Neil Armstrong 
Reviewed-by: Andrzej Hajda 
Reviewed-by: Laurent Pinchart 
Reviewed-by: Jernej Škrabec 
Link: https://patchwork.freedesktop.org/patch/msgid/20200304104052.17196-6-narmstrong@baylibre.com