From: Javier Martinez Canillas <javierm@redhat.com> To: linux-kernel@vger.kernel.org Cc: "Daniel Vetter" <daniel.vetter@ffwll.ch>, linux-fbdev@vger.kernel.org, "Sam Ravnborg" <sam@ravnborg.org>, "Maxime Ripard" <maxime@cerno.tech>, dri-devel@lists.freedesktop.org, "Noralf Trønnes" <noralf@tronnes.org>, "Geert Uytterhoeven" <geert@linux-m68k.org>, "Thomas Zimmermann" <tzimmermann@suse.de>, "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>, "Javier Martinez Canillas" <javierm@redhat.com>, "Daniel Vetter" <daniel@ffwll.ch>, "David Airlie" <airlied@linux.ie>, "Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>, "Maxime Ripard" <mripard@kernel.org> Subject: [PATCH v5 1/6] drm/format-helper: Add drm_fb_xrgb8888_to_gray8_line() Date: Fri, 11 Feb 2022 15:33:53 +0100 [thread overview] Message-ID: <20220211143358.3112958-2-javierm@redhat.com> (raw) In-Reply-To: <20220211143358.3112958-1-javierm@redhat.com> Pull the per-line conversion logic into a separate helper function. This will allow to do line-by-line conversion in other helpers that convert to a gray8 format. Suggested-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> --- Changes in v5: - Add Thomas Zimmermann's Reviewed-by to patch #1. Changes in v3: - Add a drm_fb_xrgb8888_to_gray8_line() helper function (Thomas Zimmermann) drivers/gpu/drm/drm_format_helper.c | 31 ++++++++++++++++++----------- 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c index 0f28dd2bdd72..b981712623d3 100644 --- a/drivers/gpu/drm/drm_format_helper.c +++ b/drivers/gpu/drm/drm_format_helper.c @@ -464,6 +464,21 @@ void drm_fb_xrgb8888_to_xrgb2101010_toio(void __iomem *dst, } EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010_toio); +static void drm_fb_xrgb8888_to_gray8_line(u8 *dst, const u32 *src, unsigned int pixels) +{ + unsigned int x; + + for (x = 0; x < pixels; x++) { + u8 r = (*src & 0x00ff0000) >> 16; + u8 g = (*src & 0x0000ff00) >> 8; + u8 b = *src & 0x000000ff; + + /* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */ + *dst++ = (3 * r + 6 * g + b) / 10; + src++; + } +} + /** * drm_fb_xrgb8888_to_gray8 - Convert XRGB8888 to grayscale * @dst: 8-bit grayscale destination buffer @@ -484,8 +499,9 @@ EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010_toio); void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vaddr, const struct drm_framebuffer *fb, const struct drm_rect *clip) { - unsigned int len = (clip->x2 - clip->x1) * sizeof(u32); - unsigned int x, y; + unsigned int linepixels = clip->x2 - clip->x1; + unsigned int len = linepixels * sizeof(u32); + unsigned int y; void *buf; u8 *dst8; u32 *src32; @@ -508,16 +524,7 @@ void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vad for (y = clip->y1; y < clip->y2; y++) { dst8 = dst; src32 = memcpy(buf, vaddr, len); - for (x = clip->x1; x < clip->x2; x++) { - u8 r = (*src32 & 0x00ff0000) >> 16; - u8 g = (*src32 & 0x0000ff00) >> 8; - u8 b = *src32 & 0x000000ff; - - /* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */ - *dst8++ = (3 * r + 6 * g + b) / 10; - src32++; - } - + drm_fb_xrgb8888_to_gray8_line(dst8, src32, linepixels); vaddr += fb->pitches[0]; dst += dst_pitch; } -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: Javier Martinez Canillas <javierm@redhat.com> To: linux-kernel@vger.kernel.org Cc: linux-fbdev@vger.kernel.org, "David Airlie" <airlied@linux.ie>, "Daniel Vetter" <daniel.vetter@ffwll.ch>, "Javier Martinez Canillas" <javierm@redhat.com>, dri-devel@lists.freedesktop.org, "Noralf Trønnes" <noralf@tronnes.org>, "Geert Uytterhoeven" <geert@linux-m68k.org>, "Maxime Ripard" <maxime@cerno.tech>, "Thomas Zimmermann" <tzimmermann@suse.de>, "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>, "Sam Ravnborg" <sam@ravnborg.org> Subject: [PATCH v5 1/6] drm/format-helper: Add drm_fb_xrgb8888_to_gray8_line() Date: Fri, 11 Feb 2022 15:33:53 +0100 [thread overview] Message-ID: <20220211143358.3112958-2-javierm@redhat.com> (raw) In-Reply-To: <20220211143358.3112958-1-javierm@redhat.com> Pull the per-line conversion logic into a separate helper function. This will allow to do line-by-line conversion in other helpers that convert to a gray8 format. Suggested-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> --- Changes in v5: - Add Thomas Zimmermann's Reviewed-by to patch #1. Changes in v3: - Add a drm_fb_xrgb8888_to_gray8_line() helper function (Thomas Zimmermann) drivers/gpu/drm/drm_format_helper.c | 31 ++++++++++++++++++----------- 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c index 0f28dd2bdd72..b981712623d3 100644 --- a/drivers/gpu/drm/drm_format_helper.c +++ b/drivers/gpu/drm/drm_format_helper.c @@ -464,6 +464,21 @@ void drm_fb_xrgb8888_to_xrgb2101010_toio(void __iomem *dst, } EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010_toio); +static void drm_fb_xrgb8888_to_gray8_line(u8 *dst, const u32 *src, unsigned int pixels) +{ + unsigned int x; + + for (x = 0; x < pixels; x++) { + u8 r = (*src & 0x00ff0000) >> 16; + u8 g = (*src & 0x0000ff00) >> 8; + u8 b = *src & 0x000000ff; + + /* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */ + *dst++ = (3 * r + 6 * g + b) / 10; + src++; + } +} + /** * drm_fb_xrgb8888_to_gray8 - Convert XRGB8888 to grayscale * @dst: 8-bit grayscale destination buffer @@ -484,8 +499,9 @@ EXPORT_SYMBOL(drm_fb_xrgb8888_to_xrgb2101010_toio); void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vaddr, const struct drm_framebuffer *fb, const struct drm_rect *clip) { - unsigned int len = (clip->x2 - clip->x1) * sizeof(u32); - unsigned int x, y; + unsigned int linepixels = clip->x2 - clip->x1; + unsigned int len = linepixels * sizeof(u32); + unsigned int y; void *buf; u8 *dst8; u32 *src32; @@ -508,16 +524,7 @@ void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vad for (y = clip->y1; y < clip->y2; y++) { dst8 = dst; src32 = memcpy(buf, vaddr, len); - for (x = clip->x1; x < clip->x2; x++) { - u8 r = (*src32 & 0x00ff0000) >> 16; - u8 g = (*src32 & 0x0000ff00) >> 8; - u8 b = *src32 & 0x000000ff; - - /* ITU BT.601: Y = 0.299 R + 0.587 G + 0.114 B */ - *dst8++ = (3 * r + 6 * g + b) / 10; - src32++; - } - + drm_fb_xrgb8888_to_gray8_line(dst8, src32, linepixels); vaddr += fb->pitches[0]; dst += dst_pitch; } -- 2.34.1
next prev parent reply other threads:[~2022-02-11 14:34 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-02-11 14:33 [PATCH v5 0/6] drm: Add driver for Solomon SSD130x OLED displays Javier Martinez Canillas 2022-02-11 14:33 ` Javier Martinez Canillas 2022-02-11 14:33 ` Javier Martinez Canillas [this message] 2022-02-11 14:33 ` [PATCH v5 1/6] drm/format-helper: Add drm_fb_xrgb8888_to_gray8_line() Javier Martinez Canillas 2022-02-11 15:58 ` Andy Shevchenko 2022-02-11 15:58 ` Andy Shevchenko 2022-02-11 14:33 ` [PATCH v5 2/6] drm/format-helper: Add drm_fb_xrgb8888_to_mono_reversed() Javier Martinez Canillas 2022-02-11 14:33 ` Javier Martinez Canillas 2022-02-11 16:04 ` Andy Shevchenko 2022-02-11 16:04 ` Andy Shevchenko 2022-02-12 15:54 ` Geert Uytterhoeven 2022-02-12 15:54 ` Geert Uytterhoeven 2022-02-14 8:57 ` Javier Martinez Canillas 2022-02-14 8:57 ` Javier Martinez Canillas 2022-02-11 14:33 ` [PATCH v5 3/6] drm: Add driver for Solomon SSD130x OLED displays Javier Martinez Canillas 2022-02-11 14:33 ` Javier Martinez Canillas 2022-02-11 16:13 ` Andy Shevchenko 2022-02-11 16:13 ` Andy Shevchenko 2022-02-11 19:19 ` Javier Martinez Canillas 2022-02-11 19:19 ` Javier Martinez Canillas 2022-02-12 11:59 ` Javier Martinez Canillas 2022-02-12 11:59 ` Javier Martinez Canillas 2022-02-11 14:33 ` [PATCH v5 4/6] drm/solomon: Add SSD130x OLED displays I2C support Javier Martinez Canillas 2022-02-11 14:33 ` Javier Martinez Canillas 2022-02-11 14:35 ` [PATCH v5 5/6] MAINTAINERS: Add entry for Solomon SSD130x OLED displays DRM driver Javier Martinez Canillas 2022-02-11 14:35 ` Javier Martinez Canillas 2022-02-11 14:36 ` [PATCH v5 6/6] dt-bindings: display: ssd1307fb: Add myself as binding co-maintainer Javier Martinez Canillas 2022-02-11 14:36 ` Javier Martinez Canillas
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