Commit 6836829c authored by Stuart Menefy's avatar Stuart Menefy Committed by Neil Armstrong
Browse files

drm/meson: Correct OSD1 global alpha value 



VIU_OSD1_CTRL_STAT.GLOBAL_ALPHA is a 9 bit field, so the maximum
value is 0x100 not 0xff.

This matches the vendor kernel.

Signed-off-by: default avatarStuart Menefy <stuart.menefy@mathembedded.com>
Fixes: bbbe775e ("drm: Add support for Amlogic Meson Graphic Controller")
Reviewed-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908155103.686904-1-stuart.menefy@mathembedded.com
parent 8f7115c1

drivers/gpu/drm/meson/meson_plane.c

+1 −1
Original line number Diff line number Diff line
@@ -170,7 +170,7 @@ static void meson_plane_atomic_update(struct drm_plane *plane, 


	/* Enable OSD and BLK0, set max global alpha */

	priv->viu.osd1_ctrl_stat = OSD_ENABLE |

				   (0xFF << OSD_GLOBAL_ALPHA_SHIFT) |

				   (0x100 << OSD_GLOBAL_ALPHA_SHIFT) |

				   OSD_BLK0_ENABLE;



	priv->viu.osd1_ctrl_stat2 = readl(priv->io_base +