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bh=BFStFxiSNP6zsD+AVy+GK0+VsuHYEAh+UshoPL2W+PI=; b=QyA+MeXUWnp6pEbxl3KxBSTOmW/PF64EFp3sxeHIQg28FvjU5GmPxdKEuWkV6aWJ9jP3yQ jYuZ4ELlj0Q4sFAnyLBX1cmgyibhWLmxv6OLxJ+Sy6IqJAhmBkR3/eJU3Phmqbfw4Azf4a TaiK5KJZZeFgNlVx3qipAva/f3sbhDWsOllFjzWzAw6cL+SzlzTu+xrQhHzFCU9UWJQSsl NBUwpwkBgA9oNHFRd/S5vei7DFxfpYw+SnReYu0hAtFCUSwwqQj52eR2U/rMocqZCySYwB njKuaWqibkPLNmhSOvIioVLf/jCP0vArB2Wk2m5mbZJKCu7Sknv/p/6WpSpepw== From: Louis Chauvet Date: Tue, 15 Apr 2025 15:55:39 +0200 Subject: [PATCH v18 8/8] drm/vkms: Add support for DRM_FORMAT_R* 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: <20250415-yuv-v18-8-f2918f71ec4b@bootlin.com> References: <20250415-yuv-v18-0-f2918f71ec4b@bootlin.com> In-Reply-To: <20250415-yuv-v18-0-f2918f71ec4b@bootlin.com> To: Melissa Wen , =?utf-8?q?Ma=C3=ADra_Canal?= , Haneen Mohammed , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , rdunlap@infradead.org, arthurgrillo@riseup.net, Jonathan Corbet , pekka.paalanen@haloniitty.fi, Simona Vetter , Rodrigo Siqueira , Simona Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, jeremie.dautheribes@bootlin.com, miquel.raynal@bootlin.com, thomas.petazzoni@bootlin.com, seanpaul@google.com, marcheu@google.com, nicolejadeyee@google.com, linux-doc@vger.kernel.org, Louis Chauvet , Pekka Paalanen X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; 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a=openpgp; fpr=8B7104AE9A272D6693F527F2EC1883F55E0B40A5 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgddvvdefieejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepnfhouhhishcuvehhrghuvhgvthcuoehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpedvgfefgfehtefghfffteffgfehfeetledtvdduueeifedvtdeltdeuheejleeftdenucffohhmrghinhepkhgvrhhnvghlrdhorhhgnecukfhppeeltddrkeelrdduieefrdduvdejnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepledtrdekledrudeifedruddvjedphhgvlhhopegludejvddrudekrddtrddungdpmhgrihhlfhhrohhmpehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopedvhedprhgtphhtthhopehsihhmohhnrgdrvhgvthhtvghrsehffhiflhhlrdgthhdprhgtphhtthhopegurhhiqdguvghvvghlsehlihhsthhsrdhfrhgvvgguvghskhhtohhprdhorhhgpdhrtghpthhtohepthhhohhmrghsrdhpvghtrgiiiihonhhisegsohhothhlihhnrdgtohhmpdhrtghpthhtohepmhgrihhrrggtrghnrghlsehrihhsv ghuphdrnhgvthdprhgtphhtthhopehnihgtohhlvghjrgguvgihvggvsehgohhoghhlvgdrtghomhdprhgtphhtthhopehsihhmohhnrgesfhhffihllhdrtghhpdhrtghpthhtohepmhgrrhgthhgvuhesghhoohhglhgvrdgtohhmpdhrtghpthhtohepthiiihhmmhgvrhhmrghnnhesshhushgvrdguvg X-GND-Sasl: louis.chauvet@bootlin.com This add the support for: - R1/R2/R4/R8 R1 format was tested with [1] and [2]. [1]: https://lore.kernel.org/r/20240313-new_rotation-v2-0-6230fd5cae59@boot= lin.com [2]: https://lore.kernel.org/igt-dev/20240306-b4-kms_tests-v1-0-8fe451efd2a= c@bootlin.com/ Reviewed-by: Pekka Paalanen Signed-off-by: Louis Chauvet --- drivers/gpu/drm/vkms/vkms_formats.c | 110 ++++++++++++++++++++++++++++++++= +++- drivers/gpu/drm/vkms/vkms_plane.c | 4 ++ 2 files changed, 113 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkm= s_formats.c index 9972780f3fa9..6d0227c6635a 100644 --- a/drivers/gpu/drm/vkms/vkms_formats.c +++ b/drivers/gpu/drm/vkms/vkms_formats.c @@ -249,6 +249,16 @@ static struct pixel_argb_u16 argb_u16_from_RGB565(cons= t __le16 *pixel) return out_pixel; } =20 +static struct pixel_argb_u16 argb_u16_from_gray8(u8 gray) +{ + return argb_u16_from_u8888(255, gray, gray, gray); +} + +static struct pixel_argb_u16 argb_u16_from_grayu16(u16 gray) +{ + return argb_u16_from_u16161616(0xFFFF, gray, gray, gray); +} + VISIBLE_IF_KUNIT struct pixel_argb_u16 argb_u16_from_yuv888(u8 y, u8 chann= el_1, u8 channel_2, const struct conversion_matrix *matrix) { @@ -286,7 +296,7 @@ EXPORT_SYMBOL_IF_KUNIT(argb_u16_from_yuv888); * The following functions are read_line function for each pixel format su= pported by VKMS. * * They read a line starting at the point @x_start,@y_start following the = @direction. The result - * is stored in @out_pixel and in the format ARGB16161616. + * is stored in @out_pixel and in a 64 bits format, see struct pixel_argb_= u16. * * These functions are very repetitive, but the innermost pixel loops must= be kept inside these * functions for performance reasons. Some benchmarking was done in [1] wh= ere having the innermost @@ -295,6 +305,96 @@ EXPORT_SYMBOL_IF_KUNIT(argb_u16_from_yuv888); * [1]: https://lore.kernel.org/dri-devel/d258c8dc-78e9-4509-9037-a98f7f33= b3a3@riseup.net/ */ =20 +static void Rx_read_line(const struct vkms_plane_state *plane, int x_start, + int y_start, enum pixel_read_direction direction, int count, + struct pixel_argb_u16 out_pixel[]) +{ + struct pixel_argb_u16 *end =3D out_pixel + count; + int bits_per_pixel =3D drm_format_info_bpp(plane->frame_info->fb->format,= 0); + u8 *src_pixels; + int rem_x, rem_y; + + WARN_ONCE(drm_format_info_block_height(plane->frame_info->fb->format, 0) = !=3D 1, + "%s() only support formats with block_h =3D=3D 1", __func__); + + packed_pixels_addr(plane->frame_info, x_start, y_start, 0, &src_pixels, &= rem_x, &rem_y); + int bit_offset =3D (8 - bits_per_pixel) - rem_x * bits_per_pixel; + int step =3D get_block_step_bytes(plane->frame_info->fb, direction, 0); + int mask =3D (0x1 << bits_per_pixel) - 1; + int lum_per_level =3D 0xFFFF / mask; + + if (direction =3D=3D READ_LEFT_TO_RIGHT || direction =3D=3D READ_RIGHT_TO= _LEFT) { + int restart_bit_offset; + int step_bit_offset; + + if (direction =3D=3D READ_LEFT_TO_RIGHT) { + restart_bit_offset =3D 8 - bits_per_pixel; + step_bit_offset =3D -bits_per_pixel; + } else { + restart_bit_offset =3D 0; + step_bit_offset =3D bits_per_pixel; + } + + while (out_pixel < end) { + u8 val =3D ((*src_pixels) >> bit_offset) & mask; + + *out_pixel =3D argb_u16_from_grayu16((int)val * lum_per_level); + + bit_offset +=3D step_bit_offset; + if (bit_offset < 0 || 8 <=3D bit_offset) { + bit_offset =3D restart_bit_offset; + src_pixels +=3D step; + } + out_pixel +=3D 1; + } + } else if (direction =3D=3D READ_TOP_TO_BOTTOM || direction =3D=3D READ_B= OTTOM_TO_TOP) { + while (out_pixel < end) { + u8 val =3D (*src_pixels >> bit_offset) & mask; + *out_pixel =3D argb_u16_from_grayu16((int)val * lum_per_level); + src_pixels +=3D step; + out_pixel +=3D 1; + } + } +} + +static void R1_read_line(const struct vkms_plane_state *plane, int x_start, + int y_start, enum pixel_read_direction direction, int count, + struct pixel_argb_u16 out_pixel[]) +{ + Rx_read_line(plane, x_start, y_start, direction, count, out_pixel); +} + +static void R2_read_line(const struct vkms_plane_state *plane, int x_start, + int y_start, enum pixel_read_direction direction, int count, + struct pixel_argb_u16 out_pixel[]) +{ + Rx_read_line(plane, x_start, y_start, direction, count, out_pixel); +} + +static void R4_read_line(const struct vkms_plane_state *plane, int x_start, + int y_start, enum pixel_read_direction direction, int count, + struct pixel_argb_u16 out_pixel[]) +{ + Rx_read_line(plane, x_start, y_start, direction, count, out_pixel); +} + +static void R8_read_line(const struct vkms_plane_state *plane, int x_start, + int y_start, enum pixel_read_direction direction, int count, + struct pixel_argb_u16 out_pixel[]) +{ + struct pixel_argb_u16 *end =3D out_pixel + count; + u8 *src_pixels; + int step =3D get_block_step_bytes(plane->frame_info->fb, direction, 0); + + packed_pixels_addr_1x1(plane->frame_info, x_start, y_start, 0, &src_pixel= s); + + while (out_pixel < end) { + *out_pixel =3D argb_u16_from_gray8(*src_pixels); + src_pixels +=3D step; + out_pixel +=3D 1; + } +} + static void ARGB8888_read_line(const struct vkms_plane_state *plane, int x= _start, int y_start, enum pixel_read_direction direction, int count, struct pixel_argb_u16 out_pixel[]) @@ -636,6 +736,14 @@ pixel_read_line_t get_pixel_read_line_function(u32 for= mat) case DRM_FORMAT_YVU422: case DRM_FORMAT_YVU444: return &planar_yuv_read_line; + case DRM_FORMAT_R1: + return &R1_read_line; + case DRM_FORMAT_R2: + return &R2_read_line; + case DRM_FORMAT_R4: + return &R4_read_line; + case DRM_FORMAT_R8: + return &R8_read_line; default: /* * This is a bug in vkms_plane_atomic_check(). All the supported diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_= plane.c index fbfbe424e558..e3fdd161d0f0 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -31,6 +31,10 @@ static const u32 vkms_formats[] =3D { DRM_FORMAT_YVU420, DRM_FORMAT_YVU422, DRM_FORMAT_YVU444, + DRM_FORMAT_R1, + DRM_FORMAT_R2, + DRM_FORMAT_R4, + DRM_FORMAT_R8, }; =20 static struct drm_plane_state * --=20 2.49.0