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Message-Id: <20250714-st7571-format-v1-1-a27e5112baff@gmail.com> Date: Mon, 14 Jul 2025 10:03:59 +0200 From: Marcus Folkesson <marcus.folkesson@...il.com> To: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Javier Martinez Canillas <javierm@...hat.com> Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, Marcus Folkesson <marcus.folkesson@...il.com> Subject: [PATCH 1/5] drm/st7571-i2c: correct pixel data format description The comment describes the pixel data format as stated in the st7571 datasheet, which is not necessary the same as for the connected display. Instead, describe the expected pixel data format which is used for R1/R2/XRGB8888. Signed-off-by: Marcus Folkesson <marcus.folkesson@...il.com> --- drivers/gpu/drm/sitronix/st7571-i2c.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/sitronix/st7571-i2c.c b/drivers/gpu/drm/sitronix/st7571-i2c.c index eec846892962dce2d0b86c9c5c226d44135f2b0d..3024c94c890497d1ddbbf0f7f81ec4664f48d580 100644 --- a/drivers/gpu/drm/sitronix/st7571-i2c.c +++ b/drivers/gpu/drm/sitronix/st7571-i2c.c @@ -382,10 +382,10 @@ static int st7571_fb_update_rect_grayscale(struct drm_framebuffer *fb, struct dr * even if the format is monochrome. * * The bit values maps to the following grayscale: - * 0 0 = White - * 0 1 = Light gray - * 1 0 = Dark gray - * 1 1 = Black + * 0 0 = Black + * 0 1 = Dark gray + * 1 0 = Light gray + * 1 1 = White * * For monochrome formats, write the same value twice to get * either a black or white pixel. -- 2.49.0
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