linux-stable.git/drivers/gpu/drm/pl111, branch linux-5.6.y

drm: get drm_bridge_panel connector via helper

2019-12-09T21:57:26+00:00

The drm_connector created by drm_panel_bridge was accessed
via drm_panel.connector.
Avoid the detour around drm_panel by providing a simple get method.
This avoids direct access to the connector field in drm_panel in
the two users.

The change is done in preparation for removal of drm_panel.connector.

Update pl111 and tve200 to use the new helper.

Signed-off-by: Sam Ravnborg 
Reviewed-by: Laurent Pinchart 
Reviewed-by: Linus Walleij 
Cc: Andrzej Hajda 
Cc: Neil Armstrong 
Cc: Laurent Pinchart 
Cc: Jonas Karlman 
Cc: Jernej Skrabec 
Cc: Eric Anholt 
Cc: Linus Walleij 
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: David Airlie 
Cc: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20191207140353.23967-5-sam@ravnborg.org

drm/simple-kms: Standardize arguments for callbacks

2019-10-24T11:55:56+00:00

Passing the wrong type feels icky, everywhere else we use the pipe as
the first parameter. Spotted while discussing patches with Thomas
Zimmermann.

v2: Make xen compile correctly

Acked-By: Thomas Zimmermann  (v1)
Cc: Thomas Zimmermann 
Cc: Noralf Trønnes 
Cc: Gerd Hoffmann 
Cc: Eric Anholt 
Cc: Emil Velikov 
Cc: virtualization@lists.linux-foundation.org
Cc: Linus Walleij 
Reviewed-by: Linus Walleij 
Signed-off-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20191023101256.20509-1-daniel.vetter@ffwll.ch

drm/bridge: panel: Infer connector type from panel by default

2019-09-08T17:04:23+00:00

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 
Reviewed-by: Boris Brezillon 
Signed-off-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20190904132804.29680-3-laurent.pinchart@ideasonboard.com

drm/pl111: Support grayscale

2019-08-09T07:15:05+00:00

Migrating the TI nspire calculators to use the PL111 driver for
framebuffer requires grayscale support for the elder panel
which uses 8bit grayscale only.

DRM does not support 8bit grayscale framebuffers in memory,
but by defining the bus format to be MEDIA_BUS_FMT_Y8_1X8 we
can get the hardware to turn on a grayscaling feature and
convert the RGB framebuffer to grayscale for us.

Cc: Daniel Tang 
Cc: Fabian Vogt 
Tested-by: Fabian Vogt 
Acked-by: Sam Ravnborg 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20190805085847.25554-2-linus.walleij@linaro.org

drm/pl111: Fix unused variable warning

2019-08-05T16:38:59+00:00

drivers/gpu/drm/pl111/pl111_display.c: In function ‘pl111_display_init’:
drivers/gpu/drm/pl111/pl111_display.c:551:17: warning: unused variable
‘dev’ [-Wunused-variable]
  struct device *dev = drm->dev;
                 ^
Fixes: d6781e490179 ("drm/pl111: Drop special pads config check")
Cc: Linus Walleij 
Cc: Eric Anholt 
Cc: David Airlie 
Cc: Daniel Vetter 
Signed-off-by: Shaokun Zhang 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/1564996456-55677-1-git-send-email-zhangshaokun@hisilicon.com

drm/pl111: Drop special pads config check

2019-08-03T09:59:54+00:00

This drops the check of the surplus "pads" configuration
from the device tree that is completely unused in the DRM
driver.

This was only used to work around limitations in the earlier
fbdev driver.

Cc: Pawel Moll 
Cc: Liviu Dudau 
Reviewed-by: Sam Ravnborg 
Signed-off-by: Linus Walleij 
Link: https://patchwork.freedesktop.org/patch/msgid/20190724134959.2365-2-linus.walleij@linaro.org

Merge v5.3-rc1 into drm-misc-next

2019-07-22T19:24:10+00:00

Noralf needs some SPI patches in 5.3 to merge some work on tinydrm.

Signed-off-by: Maxime Ripard

drm/pl111: drop use of drmP.h

2019-07-17T10:52:38+00:00

Drop use of the deprecated drmP.h header.
Sort includes in blocks while touching the files.

Signed-off-by: Sam Ravnborg 
Acked-by: Emil Velikov 
Reviewed-by: Alex Deucher 
Reviewed-by: Eric Anholt 
Cc: David Airlie 
Cc: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20190716064220.18157-4-sam@ravnborg.org

drm/pl111: pl111_vexpress.c: Add of_node_put() before return

2019-07-15T23:26:43+00:00

Each iteration of for_each_available_child_of_node puts the previous
node, but in the case of a break from the middle of the loop there is
no put, thus causing a memory leak. Hence add an of_node_put before the
break.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta 
Signed-off-by: Eric Anholt 
Link: https://patchwork.freedesktop.org/patch/msgid/20190706132742.3250-1-nishkadg.linux@gmail.com

drm/pl111: Drop drm_gem_prime_export/import

2019-06-21T18:08:08+00:00

They're the default.

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

Reviewed-by: Eric Anholt 
Reviewed-by: Emil Velikov 
Signed-off-by: Daniel Vetter 
Cc: Eric Anholt 
Link: https://patchwork.freedesktop.org/patch/msgid/20190614203615.12639-25-daniel.vetter@ffwll.ch