kernel.git/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c, branch linux-5.14.y

drm/panel: raspberrypi-touchscreen: Prevent double-free

2021-07-22T09:37:03Z

The mipi_dsi_device allocated by mipi_dsi_device_register_full() is already free'd on release. Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.") Signed-off-by: Maxime Ripard Reviewed-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20210720134525.563936-9-maxime@cerno.tech

drm/panel/panel-raspberrypi-touchscreen: Demote kernel-doc abuse

2021-06-03T11:31:38Z

Fixes the following W=1 kernel build warning(s): drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c:33: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Cc: Thierry Reding Cc: Sam Ravnborg Cc: David Airlie Cc: Daniel Vetter Cc: Eric Anholt Cc: dri-devel@lists.freedesktop.org Signed-off-by: Lee Jones Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20210602143300.2330146-21-lee.jones@linaro.org

drm/panel: remove return value of function drm_panel_add

2020-08-02T06:59:06Z

The function "int drm_panel_add(struct drm_panel *panel)" always returns 0, this return value is meaningless. Also, there is no need to check return value which calls "drm_panel_add and", error branch code will never run. Signed-off-by: Bernard Zhao Reviewed-by: Linus Walleij Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20200801120216.8488-1-bernard@vivo.com

drm: Nuke mode->vrefresh

2020-05-27T11:31:42Z

Get rid of mode->vrefresh and just calculate it on demand. Saves a bit of space and avoids the cached value getting out of sync with reality. Mostly done with cocci, with the following manual fixups: - Remove the now empty loop in drm_helper_probe_single_connector_modes() - Fix __MODE() macro in ch7006_mode.c - Fix DRM_MODE_ARG() macro in drm_modes.h - Remove leftover comment from samsung_s6d16d0_mode - Drop the TODO @@ @@ struct drm_display_mode { ... - int vrefresh; ... }; @@ identifier N; expression E; @@ struct drm_display_mode N = { - .vrefresh = E }; @@ identifier N; expression E; @@ struct drm_display_mode N[...] = { ..., { - .vrefresh = E } ,... }; @@ expression E; @@ { DRM_MODE(...), - .vrefresh = E, } @@ identifier M, R; @@ int drm_mode_vrefresh(const struct drm_display_mode *M) { ... - if (M->vrefresh > 0) - R = M->vrefresh; - else if (...) { ... } ... } @@ struct drm_display_mode *p; expression E; @@ ( - p->vrefresh = E; | - p->vrefresh + drm_mode_vrefresh(p) ) @@ struct drm_display_mode s; expression E; @@ ( - s.vrefresh = E; | - s.vrefresh + drm_mode_vrefresh(&s) ) @@ expression E; @@ - drm_mode_vrefresh(E) ? drm_mode_vrefresh(E) : drm_mode_vrefresh(E) + drm_mode_vrefresh(E) @find_substruct@ identifier X; identifier S; @@ struct X { ... struct drm_display_mode S; ... }; @@ identifier find_substruct.S; expression E; identifier I; @@ { .S = { - .vrefresh = E } } @@ identifier find_substruct.S; identifier find_substruct.X; expression E; identifier I; @@ struct X I[...] = { ..., .S = { - .vrefresh = E } ,... }; v2: Drop TODO v3: Rebase v4: Rebase Cc: Andrzej Hajda Cc: Neil Armstrong Cc: Laurent Pinchart Cc: Jonas Karlman Cc: Jernej Skrabec Cc: Inki Dae Cc: Joonyoung Shim Cc: Seung-Woo Kim Cc: Kyungmin Park Cc: Linus Walleij Cc: CK Hu Cc: Philipp Zabel Cc: Ben Skeggs Cc: Thierry Reding Cc: Sam Ravnborg Cc: Jerry Han Cc: Icenowy Zheng Cc: Jagan Teki Cc: Stefan Mavrodiev Cc: Robert Chiras Cc: "Guido Günther" Cc: Purism Kernel Team Cc: Benjamin Gaignard Cc: Vincent Abriou Cc: VMware Graphics Cc: Thomas Hellstrom Cc: linux-amlogic@lists.infradead.org Cc: nouveau@lists.freedesktop.org Reviewed-by: Laurent Pinchart Reviewed-by: Emil Velikov Reviewed-by: Sam Ravnborg Acked-by: Linus Walleij Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20200428171940.19552-4-ville.syrjala@linux.intel.com

drm/panel: drop drm_device from drm_panel

2019-12-09T21:57:26Z

The panel drivers used drm_panel.drm for two purposes: 1) Argument to drm_mode_duplicate() 2) drm->dev was used in error messages The first usage is replaced with drm_connector.dev - drm_connector is already connected to a drm_device and we have a valid connector The second usage is replaced with drm_panel.dev - this makes drivers more consistent in their dev argument used for dev_err() and friends With these replacements there are no more uses of drm_panel.drm, so it is removed from struct drm_panel. With this change drm_panel_attach() and drm_panel_detach() no longer have any use as they are empty functions. v2: - editorial correction in changelog (Laurent) Signed-off-by: Sam Ravnborg Reviewed-by: Laurent Pinchart Reviewed-by: Linus Walleij Cc: Thierry Reding Cc: Laurent Pinchart Cc: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: David Airlie Cc: Daniel Vetter Cc: Linus Walleij Cc: Jagan Teki Cc: Stefan Mavrodiev Cc: Robert Chiras Cc: "Guido Günther" Cc: Purism Kernel Team Link: https://patchwork.freedesktop.org/patch/msgid/20191207140353.23967-8-sam@ravnborg.org

drm/panel: add drm_connector argument to get_modes()

2019-12-09T21:57:26Z

Today the bridge creates the drm_connector, but that is planned to be moved to the display drivers. To facilitate this, update drm_panel_funcs.get_modes() to take drm_connector as an argument. All panel drivers implementing get_modes() are updated. v2: - drop accidental change (Laurent) - update docs for get_modes (Laurent) Signed-off-by: Sam Ravnborg Reviewed-by: Laurent Pinchart Reviewed-by: Linus Walleij Cc: Thierry Reding Cc: Laurent Pinchart Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: David Airlie Cc: Daniel Vetter Cc: Linus Walleij Cc: Jagan Teki Cc: Stefan Mavrodiev Cc: Robert Chiras Cc: "Guido Günther" Cc: Purism Kernel Team Link: https://patchwork.freedesktop.org/patch/msgid/20191207140353.23967-6-sam@ravnborg.org

drm/panel: rpi: Drop unused GPIO includes

2019-12-03T17:41:22Z

The Rpi panel driver doesn't use any symbols from these GPIO includes so just drop them. Cc: Eric Anholt Signed-off-by: Linus Walleij Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20191203152655.159281-1-linus.walleij@linaro.org

drm/panel: Add and fill drm_panel type field

2019-09-08T17:04:01Z

Add a type field to the drm_panel structure to report the panel type, using DRM_MODE_CONNECTOR_* macros (the values that make sense are LVDS, eDP, DSI and DPI). This will be used to initialise the corresponding connector type. Update all panel drivers accordingly. The panel-simple driver only specifies the type for the known to be LVDS panels, while all other panels are left as unknown and will be converted on a case-by-case basis as they all need to be carefully reviewed. Signed-off-by: Laurent Pinchart Reviewed-by: Boris Brezillon Reviewed-by: Linus Walleij Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190904132804.29680-2-laurent.pinchart@ideasonboard.com

drm/panel: Initialise panel dev and funcs through drm_panel_init()

2019-08-24T08:42:48Z

Instead of requiring all drivers to set the dev and funcs fields of drm_panel manually after calling drm_panel_init(), pass the data as arguments to the function. This simplifies the panel drivers, and will help future refactoring when adding new arguments to drm_panel_init(). The panel drivers have been updated with the following Coccinelle semantic patch, with manual inspection to verify that no call to drm_panel_init() with a single argument still exists. @@ expression panel; expression device; identifier ops; @@ drm_panel_init(&panel + , device, &ops ); ... ( -panel.dev = device; -panel.funcs = &ops; | -panel.funcs = &ops; -panel.dev = device; ) Suggested-by: Sam Ravnborg Signed-off-by: Laurent Pinchart Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190823193245.23876-3-laurent.pinchart@ideasonboard.com

drm/panel: Add missing drm_panel_init() in panel drivers

2019-08-24T08:42:47Z

Panels must be initialised with drm_panel_init(). Add the missing function call in the panel-raspberrypi-touchscreen.c and panel-sitronix-st7789v.c drivers. Signed-off-by: Laurent Pinchart Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190823193245.23876-2-laurent.pinchart@ideasonboard.com