kernel/linux.git/drivers/gpu/drm/renesas, branch v6.6.133

drm/rcar-du: dsi: Fix 1/2/3 lane support

2025-10-19T14:30:48+00:00

commit d83f1d19c898ac1b54ae64d1c950f5beff801982 upstream. Remove fixed PPI lane count setup. The R-Car DSI host is capable of operating in 1..4 DSI lane mode. Remove the hard-coded 4-lane configuration from PPI register settings and instead configure the PPI lane count according to lane count information already obtained by this driver instance. Configure TXSETR register to match PPI lane count. The R-Car V4H Reference Manual R19UH0186EJ0121 Rev.1.21 section 67.2.2.3 Tx Set Register (TXSETR), field LANECNT description indicates that the TXSETR register LANECNT bitfield lane count must be configured such, that it matches lane count configuration in PPISETR register DLEN bitfield. Make sure the LANECNT and DLEN bitfields are configured to match. Fixes: 155358310f01 ("drm: rcar-du: Add R-Car DSI driver") Cc: stable@vger.kernel.org Signed-off-by: Marek Vasut Reviewed-by: Tomi Valkeinen Link: https://lore.kernel.org/r/20250813210840.97621-1-marek.vasut+renesas@mailbox.org Signed-off-by: Tomi Valkeinen Signed-off-by: Greg Kroah-Hartman

drm: renesas: rz-du: mipi_dsi: Add min check for VCLK range

2025-08-28T14:28:24+00:00

[ Upstream commit e37a95d01d5acce211da8446fefbd8684c67f516 ] The VCLK range for Renesas RZ/G2L SoC is 5.803 MHz to 148.5 MHz. Add a minimum clock check in the mode_valid callback to ensure that the clock value does not fall below the valid range. Co-developed-by: Fabrizio Castro Signed-off-by: Fabrizio Castro Signed-off-by: Lad Prabhakar Reviewed-by: Biju Das Reviewed-by: Laurent Pinchart Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20250609225630.502888-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Sasha Levin

drm: rcar-du: Fix memory leak in rcar_du_vsps_init()

2025-06-19T13:28:08+00:00

[ Upstream commit 91e3bf09a90bb4340c0c3c51396e7531555efda4 ] The rcar_du_vsps_init() doesn't free the np allocated by of_parse_phandle_with_fixed_args() for the non-error case. Fix memory leak for the non-error case. While at it, replace the label 'error'->'done' as it applies to non-error case as well and update the error check condition for rcar_du_vsp_init() to avoid breakage in future, if it returns positive value. Fixes: 3e81374e2014 ("drm: rcar-du: Support multiple sources from the same VSP") Signed-off-by: Biju Das Reviewed-by: Laurent Pinchart Link: https://lore.kernel.org/r/20231116122424.80136-1-biju.das.jz@bp.renesas.com Signed-off-by: Tomi Valkeinen Signed-off-by: Sasha Levin

drm/rcar-du: dsi: Fix PHY lock bit check

2025-02-21T12:57:24+00:00

commit 6389e616fae8a101ce00068f7690461ab57b29d8 upstream. The driver checks for bit 16 (using CLOCKSET1_LOCK define) in CLOCKSET1 register when waiting for the PPI clock. However, the right bit to check is bit 17 (CLOCKSET1_LOCK_PHY define). Not only that, but there's nothing in the documents for bit 16 for V3U nor V4H. So, fix the check to use bit 17, and drop the define for bit 16. Fixes: 155358310f01 ("drm: rcar-du: Add R-Car DSI driver") Fixes: 11696c5e8924 ("drm: Place Renesas drivers in a separate dir") Cc: stable@vger.kernel.org Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart Tested-by: Geert Uytterhoeven Signed-off-by: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20241217-rcar-gh-dsi-v5-1-e77421093c05@ideasonboard.com Signed-off-by: Greg Kroah-Hartman

drm:rcar-du: Enable ABGR and XBGR formats

2023-08-14T10:47:30+00:00

These formats are used by Android so having them available allows the DU to be used for composition operations. Signed-off-by: Damian Hobson-Garcia Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart

drm: rcar-du: Add more formats to DRM_MODE_BLEND_PIXEL_NONE support

2023-08-14T10:47:30+00:00

Add additional pixel formats for which blending is disabled when DRM_MODE_BLEND_PIXEL_NONE is set. Refactor the fourcc selection into a separate function to handle the increased number of formats. Signed-off-by: Damian Hobson-Garcia Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart

drm/renesas: Convert to devm_platform_ioremap_resource()

2023-08-14T10:47:29+00:00

Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li Reviewed-by: Laurent Pinchart Signed-off-by: Laurent Pinchart

drm: rcar-du: Use dev_err_probe() to record cause of KMS init errors

2023-08-14T10:47:29+00:00

The (large) rcar_du_modeset_init() function can fail for many reasons, two of two involving probe deferral. Use dev_err_probe() in those code paths to record the cause of the probe deferral, in order to help debugging probe issues. Signed-off-by: Laurent Pinchart Reviewed-by: Kieran Bingham

drm: rcar-du: Replace DRM_INFO() with drm_info()

2023-08-14T10:47:29+00:00

drm_info() adds proper context to the kernel log message, as it receives the drm_device pointer. It is thus preferred over DRM_INFO(). Replace the latter with the former. Signed-off-by: Laurent Pinchart Reviewed-by: Kieran Bingham

drm: Fix references to drm_plane_helper_check_state()

2023-07-29T19:25:18+00:00

As of commit a01cb8ba3f628293 ("drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c"), drm_plane_helper_check_state() no longer exists, but is part of drm_atomic_helper_check_plane_state(). Signed-off-by: Geert Uytterhoeven Reviewed-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/8bb42a92fc20e3d11e5847e7f15a47c687b73104.1689779916.git.geert+renesas@glider.be