kernel.git/drivers/gpu/drm/panel/panel-raspberrypi-touchscreen.c, branch linux-5.10.y

drm/panel/raspberrypi-touchscreen: Initialise the bridge in prepare

2022-04-27T11:53:56Z

[ Upstream commit 5f18c0782b99e26121efa93d20b76c19e17aa1dd ] The panel has a prepare call which is before video starts, and an enable call which is after. The Toshiba bridge should be configured before video, so move the relevant power and initialisation calls to prepare. Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.") Signed-off-by: Dave Stevenson Signed-off-by: Stefan Wahren Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20220415162513.42190-3-stefan.wahren@i2se.com Signed-off-by: Sasha Levin

drm/panel/raspberrypi-touchscreen: Avoid NULL deref if not initialised

2022-04-27T11:53:56Z

[ Upstream commit f92055ae0acb035891e988ce345d6b81a0316423 ] If a call to rpi_touchscreen_i2c_write from rpi_touchscreen_probe fails before mipi_dsi_device_register_full is called, then in trying to log the error message if uses ts->dsi->dev when it is still NULL. Use ts->i2c->dev instead, which is initialised earlier in probe. Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.") Signed-off-by: Dave Stevenson Signed-off-by: Stefan Wahren Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20220415162513.42190-2-stefan.wahren@i2se.com Signed-off-by: Sasha Levin

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

2021-07-28T12:35:41Z

[ Upstream commit 7bbcb919e32d776ca8ddce08abb391ab92eef6a9 ] 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 Signed-off-by: Sasha Levin

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