Changes the name of this struct to a more meaningful name. A name that represents better what this struct is about.

Composer is the code that do the compositing of the planes. This struct contains information on the frame used in the output composition. Thus, vkms_frame_info is a better name to represent this.

V5: Fix a commit message typo(Melissa Wen).

Reviewed-by: Melissa Wen mwen@igalia.com Signed-off-by: Igor Torrente igormtorrente@gmail.com --- drivers/gpu/drm/vkms/vkms_composer.c | 87 ++++++++++++++-------------- drivers/gpu/drm/vkms/vkms_drv.h | 6 +- drivers/gpu/drm/vkms/vkms_plane.c | 38 ++++++------ 3 files changed, 66 insertions(+), 65 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c index 775b97766e08..0aded4e87e60 100644 --- a/drivers/gpu/drm/vkms/vkms_composer.c +++ b/drivers/gpu/drm/vkms/vkms_composer.c @@ -11,11 +11,11 @@ #include "vkms_drv.h"

static u32 get_pixel_from_buffer(int x, int y, const u8 *buffer, - const struct vkms_composer *composer) + const struct vkms_frame_info *frame_info) { u32 pixel; - int src_offset = composer->offset + (y * composer->pitch) - + (x * composer->cpp); + int src_offset = frame_info->offset + (y * frame_info->pitch) + + (x * frame_info->cpp);

pixel = *(u32 *)&buffer[src_offset];

@@ -26,24 +26,24 @@ static u32 get_pixel_from_buffer(int x, int y, const u8 *buffer, * compute_crc - Compute CRC value on output frame * * @vaddr: address to final framebuffer - * @composer: framebuffer's metadata + * @frame_info: framebuffer's metadata * * returns CRC value computed using crc32 on the visible portion of * the final framebuffer at vaddr_out */ static uint32_t compute_crc(const u8 *vaddr, - const struct vkms_composer *composer) + const struct vkms_frame_info *frame_info) { int x, y; u32 crc = 0, pixel = 0; - int x_src = composer->src.x1 >> 16; - int y_src = composer->src.y1 >> 16; - int h_src = drm_rect_height(&composer->src) >> 16; - int w_src = drm_rect_width(&composer->src) >> 16; + int x_src = frame_info->src.x1 >> 16; + int y_src = frame_info->src.y1 >> 16; + int h_src = drm_rect_height(&frame_info->src) >> 16; + int w_src = drm_rect_width(&frame_info->src) >> 16;

for (y = y_src; y < y_src + h_src; ++y) { for (x = x_src; x < x_src + w_src; ++x) { - pixel = get_pixel_from_buffer(x, y, vaddr, composer); + pixel = get_pixel_from_buffer(x, y, vaddr, frame_info); crc = crc32_le(crc, (void *)&pixel, sizeof(u32)); } } @@ -98,8 +98,8 @@ static void x_blend(const u8 *xrgb_src, u8 *xrgb_dst) * blend - blend value at vaddr_src with value at vaddr_dst * @vaddr_dst: destination address * @vaddr_src: source address - * @dst_composer: destination framebuffer's metadata - * @src_composer: source framebuffer's metadata + * @dst_frame_info: destination framebuffer's metadata + * @src_frame_info: source framebuffer's metadata * @pixel_blend: blending equation based on plane format * * Blend the vaddr_src value with the vaddr_dst value using a pixel blend @@ -111,33 +111,33 @@ static void x_blend(const u8 *xrgb_src, u8 *xrgb_dst) * pixel color values */ static void blend(void *vaddr_dst, void *vaddr_src, - struct vkms_composer *dst_composer, - struct vkms_composer *src_composer, + struct vkms_frame_info *dst_frame_info, + struct vkms_frame_info *src_frame_info, void (*pixel_blend)(const u8 *, u8 *)) { int i, j, j_dst, i_dst; int offset_src, offset_dst; u8 *pixel_dst, *pixel_src;

- int x_src = src_composer->src.x1 >> 16; - int y_src = src_composer->src.y1 >> 16; + int x_src = src_frame_info->src.x1 >> 16; + int y_src = src_frame_info->src.y1 >> 16;

- int x_dst = src_composer->dst.x1; - int y_dst = src_composer->dst.y1; - int h_dst = drm_rect_height(&src_composer->dst); - int w_dst = drm_rect_width(&src_composer->dst); + int x_dst = src_frame_info->dst.x1; + int y_dst = src_frame_info->dst.y1; + int h_dst = drm_rect_height(&src_frame_info->dst); + int w_dst = drm_rect_width(&src_frame_info->dst);

int y_limit = y_src + h_dst; int x_limit = x_src + w_dst;

for (i = y_src, i_dst = y_dst; i < y_limit; ++i) { for (j = x_src, j_dst = x_dst; j < x_limit; ++j) { - offset_dst = dst_composer->offset - + (i_dst * dst_composer->pitch) - + (j_dst++ * dst_composer->cpp); - offset_src = src_composer->offset - + (i * src_composer->pitch) - + (j * src_composer->cpp); + offset_dst = dst_frame_info->offset + + (i_dst * dst_frame_info->pitch) + + (j_dst++ * dst_frame_info->cpp); + offset_src = src_frame_info->offset + + (i * src_frame_info->pitch) + + (j * src_frame_info->cpp);

pixel_src = (u8 *)(vaddr_src + offset_src); pixel_dst = (u8 *)(vaddr_dst + offset_dst); @@ -149,32 +149,33 @@ static void blend(void *vaddr_dst, void *vaddr_src, } }

-static void compose_plane(struct vkms_composer *primary_composer, - struct vkms_composer *plane_composer, +static void compose_plane(struct vkms_frame_info *primary_plane_info, + struct vkms_frame_info *plane_frame_info, void *vaddr_out) { - struct drm_framebuffer *fb = &plane_composer->fb; + struct drm_framebuffer *fb = &plane_frame_info->fb; void *vaddr; void (*pixel_blend)(const u8 *p_src, u8 *p_dst);

- if (WARN_ON(iosys_map_is_null(&plane_composer->map[0]))) + if (WARN_ON(iosys_map_is_null(&primary_plane_info->map[0]))) return;

- vaddr = plane_composer->map[0].vaddr; + vaddr = plane_frame_info->map[0].vaddr;

if (fb->format->format == DRM_FORMAT_ARGB8888) pixel_blend = &alpha_blend; else pixel_blend = &x_blend;

- blend(vaddr_out, vaddr, primary_composer, plane_composer, pixel_blend); + blend(vaddr_out, vaddr, primary_plane_info, + plane_frame_info, pixel_blend); }

static int compose_active_planes(void **vaddr_out, - struct vkms_composer *primary_composer, + struct vkms_frame_info *primary_plane_info, struct vkms_crtc_state *crtc_state) { - struct drm_framebuffer *fb = &primary_composer->fb; + struct drm_framebuffer *fb = &primary_plane_info->fb; struct drm_gem_object *gem_obj = drm_gem_fb_get_obj(fb, 0); const void *vaddr; int i; @@ -187,10 +188,10 @@ static int compose_active_planes(void **vaddr_out, } }

- if (WARN_ON(iosys_map_is_null(&primary_composer->map[0]))) + if (WARN_ON(iosys_map_is_null(&primary_plane_info->map[0]))) return -EINVAL;

- vaddr = primary_composer->map[0].vaddr; + vaddr = primary_plane_info->map[0].vaddr;

memcpy(*vaddr_out, vaddr, gem_obj->size);

@@ -199,8 +200,8 @@ static int compose_active_planes(void **vaddr_out, * ((primary <- overlay) <- cursor) */ for (i = 1; i < crtc_state->num_active_planes; i++) - compose_plane(primary_composer, - crtc_state->active_planes[i]->composer, + compose_plane(primary_plane_info, + crtc_state->active_planes[i]->frame_info, *vaddr_out);

return 0; @@ -222,7 +223,7 @@ void vkms_composer_worker(struct work_struct *work) composer_work); struct drm_crtc *crtc = crtc_state->base.crtc; struct vkms_output *out = drm_crtc_to_vkms_output(crtc); - struct vkms_composer *primary_composer = NULL; + struct vkms_frame_info *primary_plane_info = NULL; struct vkms_plane_state *act_plane = NULL; bool crc_pending, wb_pending; void *vaddr_out = NULL; @@ -250,16 +251,16 @@ void vkms_composer_worker(struct work_struct *work) if (crtc_state->num_active_planes >= 1) { act_plane = crtc_state->active_planes[0]; if (act_plane->base.base.plane->type == DRM_PLANE_TYPE_PRIMARY) - primary_composer = act_plane->composer; + primary_plane_info = act_plane->frame_info; }

- if (!primary_composer) + if (!primary_plane_info) return;

if (wb_pending) vaddr_out = crtc_state->active_writeback->data[0].vaddr;

- ret = compose_active_planes(&vaddr_out, primary_composer, + ret = compose_active_planes(&vaddr_out, primary_plane_info, crtc_state); if (ret) { if (ret == -EINVAL && !wb_pending) @@ -267,7 +268,7 @@ void vkms_composer_worker(struct work_struct *work) return; }

- crc32 = compute_crc(vaddr_out, primary_composer); + crc32 = compute_crc(vaddr_out, primary_plane_info);

if (wb_pending) { drm_writeback_signal_completion(&out->wb_connector, 0); diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index 36fbab5989d1..5199c5f18e17 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -27,7 +27,7 @@ struct vkms_writeback_job { struct iosys_map data[DRM_FORMAT_MAX_PLANES]; };

-struct vkms_composer { +struct vkms_frame_info { struct drm_framebuffer fb; struct drm_rect src, dst; struct iosys_map map[DRM_FORMAT_MAX_PLANES]; @@ -39,11 +39,11 @@ struct vkms_composer { /** * vkms_plane_state - Driver specific plane state * @base: base plane state - * @composer: data required for composing computation + * @frame_info: data required for composing computation */ struct vkms_plane_state { struct drm_shadow_plane_state base; - struct vkms_composer *composer; + struct vkms_frame_info *frame_info; };

struct vkms_plane { diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index d8eb674b49a6..fcae6c508f4b 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -24,20 +24,20 @@ static struct drm_plane_state * vkms_plane_duplicate_state(struct drm_plane *plane) { struct vkms_plane_state *vkms_state; - struct vkms_composer *composer; + struct vkms_frame_info *frame_info;

vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL); if (!vkms_state) return NULL;

- composer = kzalloc(sizeof(*composer), GFP_KERNEL); - if (!composer) { - DRM_DEBUG_KMS("Couldn't allocate composer\n"); + frame_info = kzalloc(sizeof(*frame_info), GFP_KERNEL); + if (!frame_info) { + DRM_DEBUG_KMS("Couldn't allocate frame_info\n"); kfree(vkms_state); return NULL; }

- vkms_state->composer = composer; + vkms_state->frame_info = frame_info;

__drm_gem_duplicate_shadow_plane_state(plane, &vkms_state->base);

@@ -54,12 +54,12 @@ static void vkms_plane_destroy_state(struct drm_plane *plane, /* dropping the reference we acquired in * vkms_primary_plane_update() */ - if (drm_framebuffer_read_refcount(&vkms_state->composer->fb)) - drm_framebuffer_put(&vkms_state->composer->fb); + if (drm_framebuffer_read_refcount(&vkms_state->frame_info->fb)) + drm_framebuffer_put(&vkms_state->frame_info->fb); }

- kfree(vkms_state->composer); - vkms_state->composer = NULL; + kfree(vkms_state->frame_info); + vkms_state->frame_info = NULL;

__drm_gem_destroy_shadow_plane_state(&vkms_state->base); kfree(vkms_state); @@ -99,7 +99,7 @@ static void vkms_plane_atomic_update(struct drm_plane *plane, struct vkms_plane_state *vkms_plane_state; struct drm_shadow_plane_state *shadow_plane_state; struct drm_framebuffer *fb = new_state->fb; - struct vkms_composer *composer; + struct vkms_frame_info *frame_info;

if (!new_state->crtc || !fb) return; @@ -107,15 +107,15 @@ static void vkms_plane_atomic_update(struct drm_plane *plane, vkms_plane_state = to_vkms_plane_state(new_state); shadow_plane_state = &vkms_plane_state->base;

- composer = vkms_plane_state->composer; - memcpy(&composer->src, &new_state->src, sizeof(struct drm_rect)); - memcpy(&composer->dst, &new_state->dst, sizeof(struct drm_rect)); - memcpy(&composer->fb, fb, sizeof(struct drm_framebuffer)); - memcpy(&composer->map, &shadow_plane_state->data, sizeof(composer->map)); - drm_framebuffer_get(&composer->fb); - composer->offset = fb->offsets[0]; - composer->pitch = fb->pitches[0]; - composer->cpp = fb->format->cpp[0]; + frame_info = vkms_plane_state->frame_info; + memcpy(&frame_info->src, &new_state->src, sizeof(struct drm_rect)); + memcpy(&frame_info->dst, &new_state->dst, sizeof(struct drm_rect)); + memcpy(&frame_info->fb, fb, sizeof(struct drm_framebuffer)); + memcpy(&frame_info->map, &shadow_plane_state->data, sizeof(frame_info->map)); + drm_framebuffer_get(&frame_info->fb); + frame_info->offset = fb->offsets[0]; + frame_info->pitch = fb->pitches[0]; + frame_info->cpp = fb->format->cpp[0]; }

static int vkms_plane_atomic_check(struct drm_plane *plane,

Instead of coping `drm_framebuffer` - which can cause problems - we just get the reference and add the ref count.

Signed-off-by: Igor Torrente igormtorrente@gmail.com --- drivers/gpu/drm/vkms/vkms_composer.c | 4 ++-- drivers/gpu/drm/vkms/vkms_drv.h | 2 +- drivers/gpu/drm/vkms/vkms_plane.c | 10 +++++----- 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c index 0aded4e87e60..b9fb408e8973 100644 --- a/drivers/gpu/drm/vkms/vkms_composer.c +++ b/drivers/gpu/drm/vkms/vkms_composer.c @@ -153,7 +153,7 @@ static void compose_plane(struct vkms_frame_info *primary_plane_info, struct vkms_frame_info *plane_frame_info, void *vaddr_out) { - struct drm_framebuffer *fb = &plane_frame_info->fb; + struct drm_framebuffer *fb = plane_frame_info->fb; void *vaddr; void (*pixel_blend)(const u8 *p_src, u8 *p_dst);

@@ -175,7 +175,7 @@ static int compose_active_planes(void **vaddr_out, struct vkms_frame_info *primary_plane_info, struct vkms_crtc_state *crtc_state) { - struct drm_framebuffer *fb = &primary_plane_info->fb; + struct drm_framebuffer *fb = primary_plane_info->fb; struct drm_gem_object *gem_obj = drm_gem_fb_get_obj(fb, 0); const void *vaddr; int i; diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index 5199c5f18e17..95d71322500b 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -28,7 +28,7 @@ struct vkms_writeback_job { };

struct vkms_frame_info { - struct drm_framebuffer fb; + struct drm_framebuffer *fb; struct drm_rect src, dst; struct iosys_map map[DRM_FORMAT_MAX_PLANES]; unsigned int offset; diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index fcae6c508f4b..8adbfdc05e50 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -50,12 +50,12 @@ static void vkms_plane_destroy_state(struct drm_plane *plane, struct vkms_plane_state *vkms_state = to_vkms_plane_state(old_state); struct drm_crtc *crtc = vkms_state->base.base.crtc;

- if (crtc) { + if (crtc && vkms_state->frame_info->fb) { /* dropping the reference we acquired in * vkms_primary_plane_update() */ - if (drm_framebuffer_read_refcount(&vkms_state->frame_info->fb)) - drm_framebuffer_put(&vkms_state->frame_info->fb); + if (drm_framebuffer_read_refcount(vkms_state->frame_info->fb)) + drm_framebuffer_put(vkms_state->frame_info->fb); }

kfree(vkms_state->frame_info); @@ -110,9 +110,9 @@ static void vkms_plane_atomic_update(struct drm_plane *plane, frame_info = vkms_plane_state->frame_info; memcpy(&frame_info->src, &new_state->src, sizeof(struct drm_rect)); memcpy(&frame_info->dst, &new_state->dst, sizeof(struct drm_rect)); - memcpy(&frame_info->fb, fb, sizeof(struct drm_framebuffer)); + frame_info->fb = fb; memcpy(&frame_info->map, &shadow_plane_state->data, sizeof(frame_info->map)); - drm_framebuffer_get(&frame_info->fb); + drm_framebuffer_get(frame_info->fb); frame_info->offset = fb->offsets[0]; frame_info->pitch = fb->pitches[0]; frame_info->cpp = fb->format->cpp[0];

Currently the blend function only accepts XRGB_8888 and ARGB_8888 as a color input.

This patch refactors all the functions related to the plane composition to overcome this limitation.

The pixels blend is done using the new internal format. And new handlers are being added to convert a specific format to/from this internal format.

So the blend operation depends on these handlers to convert to this common format. The blended result, if necessary, is converted to the writeback buffer format.

This patch introduces three major differences to the blend function. 1 - All the planes are blended at once. 2 - The blend calculus is done as per line instead of per pixel. 3 - It is responsible to calculates the CRC and writing the writeback buffer(if necessary).

These changes allow us to allocate way less memory in the intermediate buffer to compute these operations. Because now we don't need to have the entire intermediate image lines at once, just one line is enough.

| Memory consumption (output dimensions) | |:--------------------------------------:| | Current | This patch | |:------------------:|:-----------------:| | Width * Heigth | 2 * Width |

Beyond memory, we also have a minor performance benefit from all these changes. Results running the IGT[1] test `igt@kms_cursor_crc@pipe-a-cursor-512x512-onscreen` ten times:

| Frametime | |:------------------------------------------:| | Implementation | Current | This commit | |:---------------:|:---------:|:------------:| | frametime range | 9~22 ms | 5~17 ms | | Average | 11.4 ms | 7.8 ms |

[1] IGT commit id: bc3f6833a12221a46659535dac06ebb312490eb4

V2: Improves the performance drastically, by performing the operations per-line and not per-pixel(Pekka Paalanen). Minor improvements(Pekka Paalanen). V3: Changes the code to blend the planes all at once. This improves performance, memory consumption, and removes much of the weirdness of the V2(Pekka Paalanen and me). Minor improvements(Pekka Paalanen and me). V4: Rebase the code and adapt it to the new NUM_OVERLAY_PLANES constant. V5: Minor checkpatch fixes and the removal of TO-DO item(Melissa Wen). Several security/robustness improvents(Pekka Paalanen). Removes check_planes_x_bounds function and allows partial partly off-screen(Pekka Paalanen). V6: Fix a mismatch of some variable sizes (Pekka Paalanen). Several minor improvements (Pekka Paalanen).

Reported-by: kernel test robot lkp@intel.com Signed-off-by: Igor Torrente igormtorrente@gmail.com --- Documentation/gpu/vkms.rst | 4 - drivers/gpu/drm/vkms/Makefile | 1 + drivers/gpu/drm/vkms/vkms_composer.c | 320 ++++++++++++-------------- drivers/gpu/drm/vkms/vkms_formats.c | 155 +++++++++++++ drivers/gpu/drm/vkms/vkms_formats.h | 12 + drivers/gpu/drm/vkms/vkms_plane.c | 3 + drivers/gpu/drm/vkms/vkms_writeback.c | 3 + 7 files changed, 317 insertions(+), 181 deletions(-) create mode 100644 drivers/gpu/drm/vkms/vkms_formats.c create mode 100644 drivers/gpu/drm/vkms/vkms_formats.h

diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst index 973e2d43108b..a49e4ae92653 100644 --- a/Documentation/gpu/vkms.rst +++ b/Documentation/gpu/vkms.rst @@ -118,10 +118,6 @@ Add Plane Features

There's lots of plane features we could add support for:

-- Clearing primary plane: clear primary plane before plane composition (at the - start) for correctness of pixel blend ops. It also guarantees alpha channel - is cleared in the target buffer for stable crc. [Good to get started] - - ARGB format on primary plane: blend the primary plane into background with translucent alpha.

diff --git a/drivers/gpu/drm/vkms/Makefile b/drivers/gpu/drm/vkms/Makefile index 72f779cbfedd..1b28a6a32948 100644 --- a/drivers/gpu/drm/vkms/Makefile +++ b/drivers/gpu/drm/vkms/Makefile @@ -3,6 +3,7 @@ vkms-y := \ vkms_drv.o \ vkms_plane.o \ vkms_output.o \ + vkms_formats.o \ vkms_crtc.o \ vkms_composer.o \ vkms_writeback.o diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c index b9fb408e8973..5b1a8bdd8268 100644 --- a/drivers/gpu/drm/vkms/vkms_composer.c +++ b/drivers/gpu/drm/vkms/vkms_composer.c @@ -7,204 +7,188 @@ #include <drm/drm_fourcc.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_vblank.h> +#include <linux/minmax.h>

#include "vkms_drv.h"

-static u32 get_pixel_from_buffer(int x, int y, const u8 *buffer, - const struct vkms_frame_info *frame_info) +static u16 pre_mul_blend_channel(u16 src, u16 dst, u16 alpha) { - u32 pixel; - int src_offset = frame_info->offset + (y * frame_info->pitch) - + (x * frame_info->cpp); + u32 new_color;

- pixel = *(u32 *)&buffer[src_offset]; + new_color = (src * 0xffff + dst * (0xffff - alpha));

- return pixel; + return DIV_ROUND_CLOSEST(new_color, 0xffff); }

/** - * compute_crc - Compute CRC value on output frame + * pre_mul_alpha_blend - alpha blending equation + * @src_frame_info: source framebuffer's metadata + * @stage_buffer: The line with the pixels from src_plane + * @output_buffer: A line buffer that receives all the blends output * - * @vaddr: address to final framebuffer - * @frame_info: framebuffer's metadata + * Using the information from the `frame_info`, this blends only the + * necessary pixels from the `stage_buffer` to the `output_buffer` + * using premultiplied blend formula. * - * returns CRC value computed using crc32 on the visible portion of - * the final framebuffer at vaddr_out + * The current DRM assumption is that pixel color values have been already + * pre-multiplied with the alpha channel values. See more + * drm_plane_create_blend_mode_property(). Also, this formula assumes a + * completely opaque background. */ -static uint32_t compute_crc(const u8 *vaddr, - const struct vkms_frame_info *frame_info) +static void pre_mul_alpha_blend(struct vkms_frame_info *frame_info, + struct line_buffer *stage_buffer, + struct line_buffer *output_buffer) { - int x, y; - u32 crc = 0, pixel = 0; - int x_src = frame_info->src.x1 >> 16; - int y_src = frame_info->src.y1 >> 16; - int h_src = drm_rect_height(&frame_info->src) >> 16; - int w_src = drm_rect_width(&frame_info->src) >> 16; - - for (y = y_src; y < y_src + h_src; ++y) { - for (x = x_src; x < x_src + w_src; ++x) { - pixel = get_pixel_from_buffer(x, y, vaddr, frame_info); - crc = crc32_le(crc, (void *)&pixel, sizeof(u32)); - } + int x_dst = frame_info->dst.x1; + struct pixel_argb_u16 *out = output_buffer->pixels + x_dst; + struct pixel_argb_u16 *in = stage_buffer->pixels; + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + stage_buffer->n_pixels); + + for (int x = 0; x < x_limit; x++) { + out[x].a = (u16)0xffff; + out[x].r = pre_mul_blend_channel(in[x].r, out[x].r, in[x].a); + out[x].g = pre_mul_blend_channel(in[x].g, out[x].g, in[x].a); + out[x].b = pre_mul_blend_channel(in[x].b, out[x].b, in[x].a); } - - return crc; }

-static u8 blend_channel(u8 src, u8 dst, u8 alpha) +static bool check_y_limit(struct vkms_frame_info *frame_info, int y) { - u32 pre_blend; - u8 new_color; - - pre_blend = (src * 255 + dst * (255 - alpha)); - - /* Faster div by 255 */ - new_color = ((pre_blend + ((pre_blend + 257) >> 8)) >> 8); + if (y >= frame_info->dst.y1 && y < frame_info->dst.y2) + return true;

- return new_color; + return false; }

/** - * alpha_blend - alpha blending equation - * @argb_src: src pixel on premultiplied alpha mode - * @argb_dst: dst pixel completely opaque + * @wb_frame_info: The writeback frame buffer metadata + * @crtc_state: The crtc state + * @crc32: The crc output of the final frame + * @output_buffer: A buffer of a row that will receive the result of the blend(s) + * @stage_buffer: The line with the pixels from plane being blend to the output * - * blend pixels using premultiplied blend formula. The current DRM assumption - * is that pixel color values have been already pre-multiplied with the alpha - * channel values. See more drm_plane_create_blend_mode_property(). Also, this - * formula assumes a completely opaque background. + * This function blends the pixels (Using the `pre_mul_alpha_blend`) + * from all planes, calculates the crc32 of the output from the former step, + * and, if necessary, convert and store the output to the writeback buffer. */ -static void alpha_blend(const u8 *argb_src, u8 *argb_dst) +static void blend(struct vkms_writeback_job *wb, + struct vkms_crtc_state *crtc_state, + u32 *crc32, struct line_buffer *stage_buffer, + struct line_buffer *output_buffer, size_t row_size) { - u8 alpha; + struct vkms_plane_state **plane = crtc_state->active_planes; + struct vkms_frame_info *primary_plane_info = plane[0]->frame_info; + u32 n_active_planes = crtc_state->num_active_planes; + + int y_dst = primary_plane_info->dst.y1; + int h_dst = drm_rect_height(&primary_plane_info->dst); + int y_limit = y_dst + h_dst; + + for (size_t y = y_dst; y < y_limit; y++) { + plane[0]->plane_read(output_buffer, primary_plane_info, y); + + /* If there are other planes besides primary, we consider the active + * planes should be in z-order and compose them associatively: + * ((primary <- overlay) <- cursor) + */ + for (size_t i = 1; i < n_active_planes; i++) { + if (!check_y_limit(plane[i]->frame_info, y)) + continue; + + plane[i]->plane_read(stage_buffer, plane[i]->frame_info, y); + pre_mul_alpha_blend(plane[i]->frame_info, stage_buffer, + output_buffer); + } + + *crc32 = crc32_le(*crc32, (void *)output_buffer->pixels, row_size);

- alpha = argb_src[3]; - argb_dst[0] = blend_channel(argb_src[0], argb_dst[0], alpha); - argb_dst[1] = blend_channel(argb_src[1], argb_dst[1], alpha); - argb_dst[2] = blend_channel(argb_src[2], argb_dst[2], alpha); + if (wb) + wb->wb_write(&wb->wb_frame_info, output_buffer, y); + } }

-/** - * x_blend - blending equation that ignores the pixel alpha - * - * overwrites RGB color value from src pixel to dst pixel. - */ -static void x_blend(const u8 *xrgb_src, u8 *xrgb_dst) +static int check_format_funcs(struct vkms_crtc_state *crtc_state, + struct vkms_writeback_job *active_wb) { - memcpy(xrgb_dst, xrgb_src, sizeof(u8) * 3); + struct vkms_plane_state **planes = crtc_state->active_planes; + u32 n_active_planes = crtc_state->num_active_planes; + + for (size_t i = 0; i < n_active_planes; i++) + if (!planes[i]->plane_read) + return -1; + + if (active_wb && !active_wb->wb_write) + return -1; + + return 0; }

-/** - * blend - blend value at vaddr_src with value at vaddr_dst - * @vaddr_dst: destination address - * @vaddr_src: source address - * @dst_frame_info: destination framebuffer's metadata - * @src_frame_info: source framebuffer's metadata - * @pixel_blend: blending equation based on plane format - * - * Blend the vaddr_src value with the vaddr_dst value using a pixel blend - * equation according to the supported plane formats DRM_FORMAT_(A/XRGB8888) - * and clearing alpha channel to an completely opaque background. This function - * uses buffer's metadata to locate the new composite values at vaddr_dst. - * - * TODO: completely clear the primary plane (a = 0xff) before starting to blend - * pixel color values - */ -static void blend(void *vaddr_dst, void *vaddr_src, - struct vkms_frame_info *dst_frame_info, - struct vkms_frame_info *src_frame_info, - void (*pixel_blend)(const u8 *, u8 *)) +static int compose_active_planes(struct vkms_writeback_job *active_wb, + struct vkms_crtc_state *crtc_state, + u32 *crc32) { - int i, j, j_dst, i_dst; - int offset_src, offset_dst; - u8 *pixel_dst, *pixel_src; - - int x_src = src_frame_info->src.x1 >> 16; - int y_src = src_frame_info->src.y1 >> 16; - - int x_dst = src_frame_info->dst.x1; - int y_dst = src_frame_info->dst.y1; - int h_dst = drm_rect_height(&src_frame_info->dst); - int w_dst = drm_rect_width(&src_frame_info->dst); - - int y_limit = y_src + h_dst; - int x_limit = x_src + w_dst; - - for (i = y_src, i_dst = y_dst; i < y_limit; ++i) { - for (j = x_src, j_dst = x_dst; j < x_limit; ++j) { - offset_dst = dst_frame_info->offset - + (i_dst * dst_frame_info->pitch) - + (j_dst++ * dst_frame_info->cpp); - offset_src = src_frame_info->offset - + (i * src_frame_info->pitch) - + (j * src_frame_info->cpp); - - pixel_src = (u8 *)(vaddr_src + offset_src); - pixel_dst = (u8 *)(vaddr_dst + offset_dst); - pixel_blend(pixel_src, pixel_dst); - /* clearing alpha channel (0xff)*/ - pixel_dst[3] = 0xff; - } - i_dst++; + size_t line_width, pixel_size = sizeof(struct pixel_argb_u16); + struct vkms_frame_info *primary_plane_info = NULL; + struct line_buffer output_buffer, stage_buffer; + struct vkms_plane_state *act_plane = NULL; + int ret = 0; + + /* + * This check exists so we can call `crc32_le` for the entire line + * instead doing it for each channel of each pixel in case + * `struct `pixel_argb_u16` had any gap added by the compiler + * between the struct fields. + */ + static_assert(sizeof(struct pixel_argb_u16) == 8); + + if (crtc_state->num_active_planes >= 1) { + act_plane = crtc_state->active_planes[0]; + if (act_plane->base.base.plane->type == DRM_PLANE_TYPE_PRIMARY) + primary_plane_info = act_plane->frame_info; } -}

-static void compose_plane(struct vkms_frame_info *primary_plane_info, - struct vkms_frame_info *plane_frame_info, - void *vaddr_out) -{ - struct drm_framebuffer *fb = plane_frame_info->fb; - void *vaddr; - void (*pixel_blend)(const u8 *p_src, u8 *p_dst); + if (!primary_plane_info) + return -EINVAL;

if (WARN_ON(iosys_map_is_null(&primary_plane_info->map[0]))) - return; + return -EINVAL;

- vaddr = plane_frame_info->map[0].vaddr; + if (WARN_ON(check_format_funcs(crtc_state, active_wb))) + return -EINVAL;

- if (fb->format->format == DRM_FORMAT_ARGB8888) - pixel_blend = &alpha_blend; - else - pixel_blend = &x_blend; + line_width = drm_rect_width(&primary_plane_info->dst); + stage_buffer.n_pixels = line_width; + output_buffer.n_pixels = line_width;

- blend(vaddr_out, vaddr, primary_plane_info, - plane_frame_info, pixel_blend); -} + stage_buffer.pixels = kvmalloc(line_width * pixel_size, GFP_KERNEL); + if (!stage_buffer.pixels) { + DRM_ERROR("Cannot allocate memory for the output line buffer"); + return -ENOMEM; + }

-static int compose_active_planes(void **vaddr_out, - struct vkms_frame_info *primary_plane_info, - struct vkms_crtc_state *crtc_state) -{ - struct drm_framebuffer *fb = primary_plane_info->fb; - struct drm_gem_object *gem_obj = drm_gem_fb_get_obj(fb, 0); - const void *vaddr; - int i; - - if (!*vaddr_out) { - *vaddr_out = kvzalloc(gem_obj->size, GFP_KERNEL); - if (!*vaddr_out) { - DRM_ERROR("Cannot allocate memory for output frame."); - return -ENOMEM; - } + output_buffer.pixels = kvmalloc(line_width * pixel_size, GFP_KERNEL); + if (!output_buffer.pixels) { + DRM_ERROR("Cannot allocate memory for intermediate line buffer"); + ret = -ENOMEM; + goto free_stage_buffer; }

- if (WARN_ON(iosys_map_is_null(&primary_plane_info->map[0]))) - return -EINVAL; + if (active_wb) { + struct vkms_frame_info *wb_frame_info = &active_wb->wb_frame_info;

- vaddr = primary_plane_info->map[0].vaddr; + wb_frame_info->src = primary_plane_info->src; + wb_frame_info->dst = primary_plane_info->dst; + }

- memcpy(*vaddr_out, vaddr, gem_obj->size); + blend(active_wb, crtc_state, crc32, &stage_buffer, + &output_buffer, line_width * pixel_size);

- /* If there are other planes besides primary, we consider the active - * planes should be in z-order and compose them associatively: - * ((primary <- overlay) <- cursor) - */ - for (i = 1; i < crtc_state->num_active_planes; i++) - compose_plane(primary_plane_info, - crtc_state->active_planes[i]->frame_info, - *vaddr_out); + kvfree(output_buffer.pixels); +free_stage_buffer: + kvfree(stage_buffer.pixels);

- return 0; + return ret; }

/** @@ -222,13 +206,11 @@ void vkms_composer_worker(struct work_struct *work) struct vkms_crtc_state, composer_work); struct drm_crtc *crtc = crtc_state->base.crtc; + struct vkms_writeback_job *active_wb = crtc_state->active_writeback; struct vkms_output *out = drm_crtc_to_vkms_output(crtc); - struct vkms_frame_info *primary_plane_info = NULL; - struct vkms_plane_state *act_plane = NULL; bool crc_pending, wb_pending; - void *vaddr_out = NULL; - u32 crc32 = 0; u64 frame_start, frame_end; + u32 crc32 = 0; int ret;

spin_lock_irq(&out->composer_lock); @@ -248,35 +230,19 @@ void vkms_composer_worker(struct work_struct *work) if (!crc_pending) return;

- if (crtc_state->num_active_planes >= 1) { - act_plane = crtc_state->active_planes[0]; - if (act_plane->base.base.plane->type == DRM_PLANE_TYPE_PRIMARY) - primary_plane_info = act_plane->frame_info; - } - - if (!primary_plane_info) - return; - if (wb_pending) - vaddr_out = crtc_state->active_writeback->data[0].vaddr; + ret = compose_active_planes(active_wb, crtc_state, &crc32); + else + ret = compose_active_planes(NULL, crtc_state, &crc32);

- ret = compose_active_planes(&vaddr_out, primary_plane_info, - crtc_state); - if (ret) { - if (ret == -EINVAL && !wb_pending) - kvfree(vaddr_out); + if (ret) return; - } - - crc32 = compute_crc(vaddr_out, primary_plane_info);

if (wb_pending) { drm_writeback_signal_completion(&out->wb_connector, 0); spin_lock_irq(&out->composer_lock); crtc_state->wb_pending = false; spin_unlock_irq(&out->composer_lock); - } else { - kvfree(vaddr_out); }

/* diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c new file mode 100644 index 000000000000..ca4bfcac686b --- /dev/null +++ b/drivers/gpu/drm/vkms/vkms_formats.c @@ -0,0 +1,155 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <drm/drm_rect.h> +#include <linux/minmax.h> + +#include "vkms_formats.h" + +static size_t pixel_offset(const struct vkms_frame_info *frame_info, int x, int y) +{ + return frame_info->offset + (y * frame_info->pitch) + + (x * frame_info->cpp); +} + +/* + * packed_pixels_addr - Get the pointer to pixel of a given pair of coordinates + * + * @frame_info: Buffer metadata + * @x: The x(width) coordinate of the 2D buffer + * @y: The y(Heigth) coordinate of the 2D buffer + * + * Takes the information stored in the frame_info, a pair of coordinates, and + * returns the address of the first color channel. + * This function assumes the channels are packed together, i.e. a color channel + * comes immediately after another in the memory. And therefore, this function + * doesn't work for YUV with chroma subsampling (e.g. YUV420 and NV21). + */ +static void *packed_pixels_addr(const struct vkms_frame_info *frame_info, + int x, int y) +{ + size_t offset = pixel_offset(frame_info, x, y); + + return (u8 *)frame_info->map[0].vaddr + offset; +} + +static void *get_packed_src_addr(const struct vkms_frame_info *frame_info, int y) +{ + int x_src = frame_info->src.x1 >> 16; + int y_src = y - frame_info->dst.y1 + (frame_info->src.y1 >> 16); + + return packed_pixels_addr(frame_info, x_src, y_src); +} + +static void ARGB8888_to_argb_u16(struct line_buffer *stage_buffer, + const struct vkms_frame_info *frame_info, int y) +{ + struct pixel_argb_u16 *out_pixels = stage_buffer->pixels; + u8 *src_pixels = get_packed_src_addr(frame_info, y); + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + stage_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, src_pixels += 4) { + /* + * The 257 is the "conversion ratio". This number is obtained by the + * (2^16 - 1) / (2^8 - 1) division. Which, in this case, tries to get + * the best color value in a pixel format with more possibilities. + * A similar idea applies to others RGB color conversions. + */ + out_pixels[x].a = (u16)src_pixels[3] * 257; + out_pixels[x].r = (u16)src_pixels[2] * 257; + out_pixels[x].g = (u16)src_pixels[1] * 257; + out_pixels[x].b = (u16)src_pixels[0] * 257; + } +} + +static void XRGB8888_to_argb_u16(struct line_buffer *stage_buffer, + const struct vkms_frame_info *frame_info, int y) +{ + struct pixel_argb_u16 *out_pixels = stage_buffer->pixels; + u8 *src_pixels = get_packed_src_addr(frame_info, y); + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + stage_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, src_pixels += 4) { + out_pixels[x].a = (u16)0xffff; + out_pixels[x].r = (u16)src_pixels[2] * 257; + out_pixels[x].g = (u16)src_pixels[1] * 257; + out_pixels[x].b = (u16)src_pixels[0] * 257; + } +} + +/* + * The following functions take an line of argb_u16 pixels from the + * src_buffer, convert them to a specific format, and store them in the + * destination. + * + * They are used in the `compose_active_planes` to convert and store a line + * from the src_buffer to the writeback buffer. + */ +static void argb_u16_to_ARGB8888(struct vkms_frame_info *frame_info, + const struct line_buffer *src_buffer, int y) +{ + int x_dst = frame_info->dst.x1; + u8 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y); + struct pixel_argb_u16 *in_pixels = src_buffer->pixels; + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + src_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) { + /* + * This sequence below is important because the format's byte order is + * in little-endian. In the case of the ARGB8888 the memory is + * organized this way: + * + * | Addr | = blue channel + * | Addr + 1 | = green channel + * | Addr + 2 | = Red channel + * | Addr + 3 | = Alpha channel + */ + dst_pixels[3] = DIV_ROUND_CLOSEST(in_pixels[x].a, 257); + dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixels[x].r, 257); + dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixels[x].g, 257); + dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixels[x].b, 257); + } +} + +static void argb_u16_to_XRGB8888(struct vkms_frame_info *frame_info, + const struct line_buffer *src_buffer, int y) +{ + int x_dst = frame_info->dst.x1; + u8 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y); + struct pixel_argb_u16 *in_pixels = src_buffer->pixels; + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + src_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) { + dst_pixels[3] = 0xff; + dst_pixels[2] = DIV_ROUND_CLOSEST(in_pixels[x].r, 257); + dst_pixels[1] = DIV_ROUND_CLOSEST(in_pixels[x].g, 257); + dst_pixels[0] = DIV_ROUND_CLOSEST(in_pixels[x].b, 257); + } +} + +frame_to_line_func get_frame_to_line_function(u32 format) +{ + switch (format) { + case DRM_FORMAT_ARGB8888: + return &ARGB8888_to_argb_u16; + case DRM_FORMAT_XRGB8888: + return &XRGB8888_to_argb_u16; + default: + return NULL; + } +} + +line_to_frame_func get_line_to_frame_function(u32 format) +{ + switch (format) { + case DRM_FORMAT_ARGB8888: + return &argb_u16_to_ARGB8888; + case DRM_FORMAT_XRGB8888: + return &argb_u16_to_XRGB8888; + default: + return NULL; + } +} diff --git a/drivers/gpu/drm/vkms/vkms_formats.h b/drivers/gpu/drm/vkms/vkms_formats.h new file mode 100644 index 000000000000..053ca42d5b31 --- /dev/null +++ b/drivers/gpu/drm/vkms/vkms_formats.h @@ -0,0 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#ifndef _VKMS_FORMATS_H_ +#define _VKMS_FORMATS_H_ + +#include "vkms_drv.h" + +frame_to_line_func get_frame_to_line_function(u32 format); + +line_to_frame_func get_line_to_frame_function(u32 format); + +#endif /* _VKMS_FORMATS_H_ */ diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 8adbfdc05e50..7a479a714565 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -10,6 +10,7 @@ #include <drm/drm_plane_helper.h>

#include "vkms_drv.h" +#include "vkms_formats.h"

static const u32 vkms_formats[] = { DRM_FORMAT_XRGB8888, @@ -100,6 +101,7 @@ static void vkms_plane_atomic_update(struct drm_plane *plane, struct drm_shadow_plane_state *shadow_plane_state; struct drm_framebuffer *fb = new_state->fb; struct vkms_frame_info *frame_info; + u32 fmt = fb->format->format;

if (!new_state->crtc || !fb) return; @@ -116,6 +118,7 @@ static void vkms_plane_atomic_update(struct drm_plane *plane, frame_info->offset = fb->offsets[0]; frame_info->pitch = fb->pitches[0]; frame_info->cpp = fb->format->cpp[0]; + vkms_plane_state->plane_read = get_frame_to_line_function(fmt); }

static int vkms_plane_atomic_check(struct drm_plane *plane, diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c index c87f6c89e7b4..d2aabb52cb46 100644 --- a/drivers/gpu/drm/vkms/vkms_writeback.c +++ b/drivers/gpu/drm/vkms/vkms_writeback.c @@ -11,6 +11,7 @@ #include <drm/drm_gem_shmem_helper.h>

#include "vkms_drv.h" +#include "vkms_formats.h"

static const u32 vkms_wb_formats[] = { DRM_FORMAT_XRGB8888, @@ -123,6 +124,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn, struct drm_framebuffer *fb = connector_state->writeback_job->fb; struct vkms_writeback_job *active_wb; struct vkms_frame_info *wb_frame_info; + u32 wb_format = fb->format->format;

if (!conn_state) return; @@ -140,6 +142,7 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn, crtc_state->wb_pending = true; spin_unlock_irq(&output->composer_lock); drm_writeback_queue_job(wb_conn, connector_state); + active_wb->wb_write = get_line_to_frame_function(wb_format); }

static const struct drm_connector_helper_funcs vkms_wb_conn_helper_funcs = {

This will be useful to write tests that depends on these formats.

ARGB and XRGB follows the a similar implementation of the former formats. Just adjusting for 16 bits per channel.

V3: Adapt the handlers to the new format introduced in patch 7 V3. V5: Minor improvements Added le16_to_cpu/cpu_to_le16 to the 16 bits color read/writes.

Signed-off-by: Igor Torrente igormtorrente@gmail.com --- drivers/gpu/drm/vkms/vkms_formats.c | 77 +++++++++++++++++++++++++++ drivers/gpu/drm/vkms/vkms_plane.c | 5 +- drivers/gpu/drm/vkms/vkms_writeback.c | 2 + 3 files changed, 83 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c index ca4bfcac686b..8b651ffcc743 100644 --- a/drivers/gpu/drm/vkms/vkms_formats.c +++ b/drivers/gpu/drm/vkms/vkms_formats.c @@ -78,6 +78,41 @@ static void XRGB8888_to_argb_u16(struct line_buffer *stage_buffer, } }

+static void ARGB16161616_to_argb_u16(struct line_buffer *stage_buffer, + const struct vkms_frame_info *frame_info, + int y) +{ + struct pixel_argb_u16 *out_pixels = stage_buffer->pixels; + u16 *src_pixels = get_packed_src_addr(frame_info, y); + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + stage_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, src_pixels += 4) { + out_pixels[x].a = le16_to_cpu(src_pixels[3]); + out_pixels[x].r = le16_to_cpu(src_pixels[2]); + out_pixels[x].g = le16_to_cpu(src_pixels[1]); + out_pixels[x].b = le16_to_cpu(src_pixels[0]); + } +} + +static void XRGB16161616_to_argb_u16(struct line_buffer *stage_buffer, + const struct vkms_frame_info *frame_info, + int y) +{ + struct pixel_argb_u16 *out_pixels = stage_buffer->pixels; + u16 *src_pixels = get_packed_src_addr(frame_info, y); + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + stage_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, src_pixels += 4) { + out_pixels[x].a = (u16)0xffff; + out_pixels[x].r = le16_to_cpu(src_pixels[2]); + out_pixels[x].g = le16_to_cpu(src_pixels[1]); + out_pixels[x].b = le16_to_cpu(src_pixels[0]); + } +} + + /* * The following functions take an line of argb_u16 pixels from the * src_buffer, convert them to a specific format, and store them in the @@ -130,6 +165,40 @@ static void argb_u16_to_XRGB8888(struct vkms_frame_info *frame_info, } }

+static void argb_u16_to_ARGB16161616(struct vkms_frame_info *frame_info, + const struct line_buffer *src_buffer, int y) +{ + int x_dst = frame_info->dst.x1; + u16 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y); + struct pixel_argb_u16 *in_pixels = src_buffer->pixels; + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + src_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) { + dst_pixels[3] = cpu_to_le16(in_pixels[x].a); + dst_pixels[2] = cpu_to_le16(in_pixels[x].r); + dst_pixels[1] = cpu_to_le16(in_pixels[x].g); + dst_pixels[0] = cpu_to_le16(in_pixels[x].b); + } +} + +static void argb_u16_to_XRGB16161616(struct vkms_frame_info *frame_info, + const struct line_buffer *src_buffer, int y) +{ + int x_dst = frame_info->dst.x1; + u16 *dst_pixels = packed_pixels_addr(frame_info, x_dst, y); + struct pixel_argb_u16 *in_pixels = src_buffer->pixels; + int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), + src_buffer->n_pixels); + + for (size_t x = 0; x < x_limit; x++, dst_pixels += 4) { + dst_pixels[3] = 0xffff; + dst_pixels[2] = cpu_to_le16(in_pixels[x].r); + dst_pixels[1] = cpu_to_le16(in_pixels[x].g); + dst_pixels[0] = cpu_to_le16(in_pixels[x].b); + } +} + frame_to_line_func get_frame_to_line_function(u32 format) { switch (format) { @@ -137,6 +206,10 @@ frame_to_line_func get_frame_to_line_function(u32 format) return &ARGB8888_to_argb_u16; case DRM_FORMAT_XRGB8888: return &XRGB8888_to_argb_u16; + case DRM_FORMAT_ARGB16161616: + return &ARGB16161616_to_argb_u16; + case DRM_FORMAT_XRGB16161616: + return &XRGB16161616_to_argb_u16; default: return NULL; } @@ -149,6 +222,10 @@ line_to_frame_func get_line_to_frame_function(u32 format) return &argb_u16_to_ARGB8888; case DRM_FORMAT_XRGB8888: return &argb_u16_to_XRGB8888; + case DRM_FORMAT_ARGB16161616: + return &argb_u16_to_ARGB16161616; + case DRM_FORMAT_XRGB16161616: + return &argb_u16_to_XRGB16161616; default: return NULL; } diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 7a479a714565..0e33e3471d40 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -14,11 +14,14 @@

static const u32 vkms_formats[] = { DRM_FORMAT_XRGB8888, + DRM_FORMAT_XRGB16161616 };

static const u32 vkms_plane_formats[] = { DRM_FORMAT_ARGB8888, - DRM_FORMAT_XRGB8888 + DRM_FORMAT_XRGB8888, + DRM_FORMAT_XRGB16161616, + DRM_FORMAT_ARGB16161616 };

static struct drm_plane_state * diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c index 974db5defce4..c417f94be2a2 100644 --- a/drivers/gpu/drm/vkms/vkms_writeback.c +++ b/drivers/gpu/drm/vkms/vkms_writeback.c @@ -15,6 +15,8 @@

static const u32 vkms_wb_formats[] = { DRM_FORMAT_XRGB8888, + DRM_FORMAT_XRGB16161616, + DRM_FORMAT_ARGB16161616 };

static const struct drm_connector_funcs vkms_wb_connector_funcs = {