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bh=ab/UoitdFlXPH53JKWWYVjj8RBffXVQrAXU9vps/ES0=; b=gunbTzzondc57kzWj29s1Tz4aA 5664+ptkekCB0xBm4HZX1kmnb6QTRDH8TXyQM+c11XmLKwHRuThhC+hJZRXkQnEGvgTMAHAioBRNb Sw0f3GZkfYkcXwLP1ljHKzd6qpo0u4Q1Ypzi0ue7Sgtzrc/G3tTH2aewTbV/uWy7PfFA=; Received: from [87.16.13.60] (port=64461 helo=fedora.fritz.box) by esm19.siteground.biz with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (Exim 4.98.1) (envelope-from ) id 1v5VEu-000000001im-416r; Sun, 05 Oct 2025 20:21:53 +0000 From: Francesco Valla Date: Sun, 05 Oct 2025 22:21:34 +0200 Subject: [PATCH 1/3] drm/draw: add drm_draw_can_convert_from_xrgb8888 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251005-drm_draw_conv_check-v1-1-9c814d9362f6@valla.it> References: <20251005-drm_draw_conv_check-v1-0-9c814d9362f6@valla.it> In-Reply-To: <20251005-drm_draw_conv_check-v1-0-9c814d9362f6@valla.it> To: Jocelyn Falempe , Javier Martinez Canillas , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Francesco Valla X-Mailer: b4 0.14.2 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - esm19.siteground.biz X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - valla.it X-Source: X-Source-Args: X-Source-Dir: X-SGantispam-id: 848ddd08561cc6884978eb8aaef64364 AntiSpam-DLS: false AntiSpam-DLSP: AntiSpam-DLSRS: AntiSpam-TS: 1.0 CFBL-Address: feedback@antispam.mailspamprotection.com; report=arf CFBL-Feedback-ID: 1v5VF1-00000008Ii7-2rki-feedback@antispam.mailspamprotection.com Authentication-Results: outgoing.instance-europe-west4-nf36.prod.antispam.mailspamprotection.com; iprev=pass (214.173.214.35.bc.googleusercontent.com) smtp.remote-ip=35.214.173.214; auth=pass (LOGIN) smtp.auth=esm19.siteground.biz; dkim=pass header.d=valla.it header.s=default header.a=rsa-sha256; arc=none Add drm_draw_can_convert_from_xrgb8888() function that can be used to determine if a XRGB8888 color can be converted to the specified format. Signed-off-by: Francesco Valla --- drivers/gpu/drm/drm_draw.c | 84 +++++++++++++++++++++++++++------= ---- drivers/gpu/drm/drm_draw_internal.h | 2 + 2 files changed, 63 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/drm_draw.c b/drivers/gpu/drm/drm_draw.c index 9dc0408fbbeadbe8282a2d6b210e0bfb0672967f..2641026a103d3b28cab9f5d3786= 04b0604520fe4 100644 --- a/drivers/gpu/drm/drm_draw.c +++ b/drivers/gpu/drm/drm_draw.c @@ -15,45 +15,83 @@ #include "drm_draw_internal.h" #include "drm_format_internal.h" =20 -/** - * drm_draw_color_from_xrgb8888 - convert one pixel from xrgb8888 to the d= esired format - * @color: input color, in xrgb8888 format - * @format: output format - * - * Returns: - * Color in the format specified, casted to u32. - * Or 0 if the format is not supported. - */ -u32 drm_draw_color_from_xrgb8888(u32 color, u32 format) +static int __drm_draw_color_from_xrgb8888(u32 color, u32 format, u32 *out_= color) { switch (format) { case DRM_FORMAT_RGB565: - return drm_pixel_xrgb8888_to_rgb565(color); + *out_color =3D drm_pixel_xrgb8888_to_rgb565(color); + break; case DRM_FORMAT_RGBA5551: - return drm_pixel_xrgb8888_to_rgba5551(color); + *out_color =3D drm_pixel_xrgb8888_to_rgba5551(color); + break; case DRM_FORMAT_XRGB1555: - return drm_pixel_xrgb8888_to_xrgb1555(color); + *out_color =3D drm_pixel_xrgb8888_to_xrgb1555(color); + break; case DRM_FORMAT_ARGB1555: - return drm_pixel_xrgb8888_to_argb1555(color); + *out_color =3D drm_pixel_xrgb8888_to_argb1555(color); + break; case DRM_FORMAT_RGB888: + fallthrough; case DRM_FORMAT_XRGB8888: - return color; + *out_color =3D color; + break; case DRM_FORMAT_ARGB8888: - return drm_pixel_xrgb8888_to_argb8888(color); + *out_color =3D drm_pixel_xrgb8888_to_argb8888(color); + break; case DRM_FORMAT_XBGR8888: - return drm_pixel_xrgb8888_to_xbgr8888(color); + *out_color =3D drm_pixel_xrgb8888_to_xbgr8888(color); + break; case DRM_FORMAT_ABGR8888: - return drm_pixel_xrgb8888_to_abgr8888(color); + *out_color =3D drm_pixel_xrgb8888_to_abgr8888(color); + break; case DRM_FORMAT_XRGB2101010: - return drm_pixel_xrgb8888_to_xrgb2101010(color); + *out_color =3D drm_pixel_xrgb8888_to_xrgb2101010(color); + break; case DRM_FORMAT_ARGB2101010: - return drm_pixel_xrgb8888_to_argb2101010(color); + *out_color =3D drm_pixel_xrgb8888_to_argb2101010(color); + break; case DRM_FORMAT_ABGR2101010: - return drm_pixel_xrgb8888_to_abgr2101010(color); + *out_color =3D drm_pixel_xrgb8888_to_abgr2101010(color); + break; default: - WARN_ONCE(1, "Can't convert to %p4cc\n", &format); - return 0; + return -1; } + + return 0; +} + +/** + * drm_draw_can_convert_from_xrgb8888 - check if xrgb8888 can be converted= to the desired format + * @format: format + * + * Returns: + * True if XRGB8888 can be converted to the specified format, false otherw= ise. + */ +bool drm_draw_can_convert_from_xrgb8888(u32 format) +{ + u32 out_color; + + return __drm_draw_color_from_xrgb8888(0, format, &out_color) =3D=3D 0; +} +EXPORT_SYMBOL(drm_draw_can_convert_from_xrgb8888); + +/** + * drm_draw_color_from_xrgb8888 - convert one pixel from xrgb8888 to the d= esired format + * @color: input color, in xrgb8888 format + * @format: output format + * + * Returns: + * Color in the format specified, casted to u32. + * Or 0 if the format is not supported. + */ +u32 drm_draw_color_from_xrgb8888(u32 color, u32 format) +{ + u32 out_color =3D 0; + + if (__drm_draw_color_from_xrgb8888(color, format, &out_color)) + WARN_ONCE(1, "Can't convert to %p4cc\n", &format); + + return out_color; } EXPORT_SYMBOL(drm_draw_color_from_xrgb8888); =20 diff --git a/drivers/gpu/drm/drm_draw_internal.h b/drivers/gpu/drm/drm_draw= _internal.h index f121ee7339dc11537f677c833f0ee94fe0e799cd..2ab4cb341df94fc4173dd6f5e7a= 512bdcfa5e55c 100644 --- a/drivers/gpu/drm/drm_draw_internal.h +++ b/drivers/gpu/drm/drm_draw_internal.h @@ -24,6 +24,8 @@ static inline const u8 *drm_draw_get_char_bitmap(const st= ruct font_desc *font, return font->data + (c * font->height) * font_pitch; } =20 +bool drm_draw_can_convert_from_xrgb8888(u32 format); + u32 drm_draw_color_from_xrgb8888(u32 color, u32 format); =20 void drm_draw_blit16(struct iosys_map *dmap, unsigned int dpitch, --=20 2.51.0