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Message-Id: <20240313-yuv-v5-16-e610cbd03f52@bootlin.com>
Date: Wed, 13 Mar 2024 18:45:10 +0100
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>,
Melissa Wen <melissa.srw@...il.com>,
Maíra Canal <mairacanal@...eup.net>,
Haneen Mohammed <hamohammed.sa@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, arthurgrillo@...eup.net,
Jonathan Corbet <corbet@....net>, pekka.paalanen@...oniitty.fi
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
jeremie.dautheribes@...tlin.com, miquel.raynal@...tlin.com,
thomas.petazzoni@...tlin.com, seanpaul@...gle.com, marcheu@...gle.com,
nicolejadeyee@...gle.com, Louis Chauvet <louis.chauvet@...tlin.com>
Subject: [PATCH v5 16/16] drm/vkms: Add support for DRM_FORMAT_R*
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@bootlin.com
[2]: https://lore.kernel.org/igt-dev/20240306-b4-kms_tests-v1-0-8fe451efd2ac@bootlin.com/
Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
drivers/gpu/drm/vkms/vkms_formats.c | 100 ++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/vkms/vkms_plane.c | 6 ++-
2 files changed, 105 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
index 863fc91d6d48..cbb2ec09564a 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.c
+++ b/drivers/gpu/drm/vkms/vkms_formats.c
@@ -201,6 +201,11 @@ static struct pixel_argb_u16 argb_u16_from_RGB565(const u16 *pixel)
return out_pixel;
}
+static struct pixel_argb_u16 argb_u16_from_gray8(u8 gray)
+{
+ return argb_u16_from_u8888(255, gray, gray, gray);
+}
+
VISIBLE_IF_KUNIT struct pixel_argb_u16 argb_u16_from_yuv888(u8 y, u8 cb, u8 cr,
struct conversion_matrix *matrix)
{
@@ -269,6 +274,89 @@ static void black_to_argb_u16(const struct vkms_plane_state *plane, int x_start,
}
}
+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[], u8 bit_per_pixel, u8 lum_per_level)
+{
+ struct pixel_argb_u16 *end = out_pixel + count;
+ u8 *src_pixels;
+ int rem_x, rem_y;
+
+ packed_pixels_addr(plane->frame_info, x_start, y_start, 0, &src_pixels, &rem_x, &rem_y);
+ int bit_offset = (int)rem_x * bit_per_pixel;
+ int step = get_step_next_block(plane->frame_info->fb, direction, 0);
+ int mask = (0x1 << bit_per_pixel) - 1;
+
+ if (direction == READ_LEFT_TO_RIGHT || direction == READ_RIGHT_TO_LEFT) {
+ int restart_bit_offset = 0;
+ int step_bit_offset = bit_per_pixel;
+
+ if (direction == READ_RIGHT_TO_LEFT) {
+ restart_bit_offset = 8 - bit_per_pixel;
+ step_bit_offset = -bit_per_pixel;
+ }
+
+ while (out_pixel < end) {
+ u8 val = (*src_pixels & (mask << bit_offset)) >> bit_offset;
+
+ *out_pixel = argb_u16_from_gray8(val * lum_per_level);
+
+ bit_offset += step_bit_offset;
+ if (bit_offset < 0 || 8 <= bit_offset) {
+ bit_offset = restart_bit_offset;
+ src_pixels += step;
+ }
+ out_pixel += 1;
+ }
+ } else if (direction == READ_TOP_TO_BOTTOM || direction == READ_BOTTOM_TO_TOP) {
+ while (out_pixel < end) {
+ u8 val = (*src_pixels & (mask << bit_offset)) >> bit_offset;
+ *out_pixel = argb_u16_from_gray8(val * lum_per_level);
+ src_pixels += step;
+ out_pixel += 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, 1, 0xFF);
+}
+
+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, 2, 0x55);
+}
+
+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, 4, 0x11);
+}
+
+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 = out_pixel + count;
+ u8 *src_pixels;
+ int rem_x, rem_y;
+ int step = get_step_next_block(plane->frame_info->fb, direction, 0);
+
+ packed_pixels_addr(plane->frame_info, x_start, y_start, 0, &src_pixels, &rem_x, &rem_y);
+
+ while (out_pixel < end) {
+ *out_pixel = argb_u16_from_gray8(*src_pixels);
+ src_pixels += step;
+ out_pixel += 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[])
@@ -582,6 +670,14 @@ pixel_read_line_t get_pixel_read_line_function(u32 format)
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
@@ -855,6 +951,10 @@ get_conversion_matrix_to_argb_u16(u32 format, enum drm_color_encoding encoding,
case DRM_FORMAT_ARGB16161616:
case DRM_FORMAT_XRGB16161616:
case DRM_FORMAT_RGB565:
+ case DRM_FORMAT_R1:
+ case DRM_FORMAT_R2:
+ case DRM_FORMAT_R4:
+ case DRM_FORMAT_R8:
/*
* Those formats are supported, but they don't need a conversion matrix. Return
* a valid pointer to avoid kernel panic in case this matrix is used/checked
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index e21cc92cf497..dc9d62acf350 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -29,7 +29,11 @@ static const u32 vkms_formats[] = {
DRM_FORMAT_YUV444,
DRM_FORMAT_YVU420,
DRM_FORMAT_YVU422,
- DRM_FORMAT_YVU444
+ DRM_FORMAT_YVU444,
+ DRM_FORMAT_R1,
+ DRM_FORMAT_R2,
+ DRM_FORMAT_R4,
+ DRM_FORMAT_R8
};
static struct drm_plane_state *
--
2.43.0
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