From: Maíra Canal mcanal@igalia.com
[ Upstream commit 322d716a3e8a74fb75cd0f657647be4df253fd2f ]
Currently, the pixel conversion functions repeat the same loop to iterate the rows. Instead of repeating the same code for each pixel format, create a function to wrap the loop and isolate the pixel conversion functionality.
Suggested-by: Arthur Grillo arthurgrillo@riseup.net Signed-off-by: Maíra Canal mcanal@igalia.com Reviewed-by: Arthur Grillo arthurgrillo@riseup.net Signed-off-by: Maíra Canal mairacanal@riseup.net Link: https://patchwork.freedesktop.org/patch/msgid/20230418130525.128733-2-mcanal... Stable-dep-of: ab87f558dcfb ("drm/vkms: Fix RGB565 pixel conversion") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/vkms/vkms_composer.c | 4 +- drivers/gpu/drm/vkms/vkms_drv.h | 4 +- drivers/gpu/drm/vkms/vkms_formats.c | 125 +++++++++++---------------- drivers/gpu/drm/vkms/vkms_formats.h | 2 +- drivers/gpu/drm/vkms/vkms_plane.c | 2 +- 5 files changed, 56 insertions(+), 81 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c index 8e53fa80742b2..80164e79af006 100644 --- a/drivers/gpu/drm/vkms/vkms_composer.c +++ b/drivers/gpu/drm/vkms/vkms_composer.c @@ -99,7 +99,7 @@ static void blend(struct vkms_writeback_job *wb, if (!check_y_limit(plane[i]->frame_info, y)) continue;
- plane[i]->plane_read(stage_buffer, plane[i]->frame_info, y); + vkms_compose_row(stage_buffer, plane[i], y); pre_mul_alpha_blend(plane[i]->frame_info, stage_buffer, output_buffer); } @@ -118,7 +118,7 @@ static int check_format_funcs(struct vkms_crtc_state *crtc_state, u32 n_active_planes = crtc_state->num_active_planes;
for (size_t i = 0; i < n_active_planes; i++) - if (!planes[i]->plane_read) + if (!planes[i]->pixel_read) return -1;
if (active_wb && !active_wb->wb_write) diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index 0a67b8073f7e5..de4efc0a3bd01 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -56,8 +56,7 @@ struct vkms_writeback_job { struct vkms_plane_state { struct drm_shadow_plane_state base; struct vkms_frame_info *frame_info; - void (*plane_read)(struct line_buffer *buffer, - const struct vkms_frame_info *frame_info, int y); + void (*pixel_read)(u8 *src_buffer, struct pixel_argb_u16 *out_pixel); };
struct vkms_plane { @@ -155,6 +154,7 @@ int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name, /* Composer Support */ void vkms_composer_worker(struct work_struct *work); void vkms_set_composer(struct vkms_output *out, bool enabled); +void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state *plane, int y);
/* Writeback */ int vkms_enable_writeback_connector(struct vkms_device *vkmsdev); diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c index d4950688b3f17..8d948c73741ef 100644 --- a/drivers/gpu/drm/vkms/vkms_formats.c +++ b/drivers/gpu/drm/vkms/vkms_formats.c @@ -42,100 +42,75 @@ static void *get_packed_src_addr(const struct vkms_frame_info *frame_info, int y 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) +static void ARGB8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel) { - 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; - } + /* + * 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_pixel->a = (u16)src_pixels[3] * 257; + out_pixel->r = (u16)src_pixels[2] * 257; + out_pixel->g = (u16)src_pixels[1] * 257; + out_pixel->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) +static void XRGB8888_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel) { - 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; - } + out_pixel->a = (u16)0xffff; + out_pixel->r = (u16)src_pixels[2] * 257; + out_pixel->g = (u16)src_pixels[1] * 257; + out_pixel->b = (u16)src_pixels[0] * 257; }
-static void ARGB16161616_to_argb_u16(struct line_buffer *stage_buffer, - const struct vkms_frame_info *frame_info, - int y) +static void ARGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel) { - 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); + u16 *pixels = (u16 *)src_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]); - } + out_pixel->a = le16_to_cpu(pixels[3]); + out_pixel->r = le16_to_cpu(pixels[2]); + out_pixel->g = le16_to_cpu(pixels[1]); + out_pixel->b = le16_to_cpu(pixels[0]); }
-static void XRGB16161616_to_argb_u16(struct line_buffer *stage_buffer, - const struct vkms_frame_info *frame_info, - int y) +static void XRGB16161616_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel) { - 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); + u16 *pixels = (u16 *)src_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]); - } + out_pixel->a = (u16)0xffff; + out_pixel->r = le16_to_cpu(pixels[2]); + out_pixel->g = le16_to_cpu(pixels[1]); + out_pixel->b = le16_to_cpu(pixels[0]); }
-static void RGB565_to_argb_u16(struct line_buffer *stage_buffer, - const struct vkms_frame_info *frame_info, int y) +static void RGB565_to_argb_u16(u8 *src_pixels, struct pixel_argb_u16 *out_pixel) { - 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); + u16 *pixels = (u16 *)src_pixels;
s64 fp_rb_ratio = drm_fixp_div(drm_int2fixp(65535), drm_int2fixp(31)); s64 fp_g_ratio = drm_fixp_div(drm_int2fixp(65535), drm_int2fixp(63));
- for (size_t x = 0; x < x_limit; x++, src_pixels++) { - u16 rgb_565 = le16_to_cpu(*src_pixels); - s64 fp_r = drm_int2fixp((rgb_565 >> 11) & 0x1f); - s64 fp_g = drm_int2fixp((rgb_565 >> 5) & 0x3f); - s64 fp_b = drm_int2fixp(rgb_565 & 0x1f); + u16 rgb_565 = le16_to_cpu(*pixels); + s64 fp_r = drm_int2fixp((rgb_565 >> 11) & 0x1f); + s64 fp_g = drm_int2fixp((rgb_565 >> 5) & 0x3f); + s64 fp_b = drm_int2fixp(rgb_565 & 0x1f);
- out_pixels[x].a = (u16)0xffff; - out_pixels[x].r = drm_fixp2int(drm_fixp_mul(fp_r, fp_rb_ratio)); - out_pixels[x].g = drm_fixp2int(drm_fixp_mul(fp_g, fp_g_ratio)); - out_pixels[x].b = drm_fixp2int(drm_fixp_mul(fp_b, fp_rb_ratio)); - } + out_pixel->a = (u16)0xffff; + out_pixel->r = drm_fixp2int(drm_fixp_mul(fp_r, fp_rb_ratio)); + out_pixel->g = drm_fixp2int(drm_fixp_mul(fp_g, fp_g_ratio)); + out_pixel->b = drm_fixp2int(drm_fixp_mul(fp_b, fp_rb_ratio)); +} + +void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state *plane, int y) +{ + struct pixel_argb_u16 *out_pixels = stage_buffer->pixels; + struct vkms_frame_info *frame_info = plane->frame_info; + u8 *src_pixels = get_packed_src_addr(frame_info, y); + int limit = min_t(size_t, drm_rect_width(&frame_info->dst), stage_buffer->n_pixels); + + for (size_t x = 0; x < limit; x++, src_pixels += frame_info->cpp) + plane->pixel_read(src_pixels, &out_pixels[x]); }
/* @@ -249,7 +224,7 @@ static void argb_u16_to_RGB565(struct vkms_frame_info *frame_info, } }
-void *get_frame_to_line_function(u32 format) +void *get_pixel_conversion_function(u32 format) { switch (format) { case DRM_FORMAT_ARGB8888: diff --git a/drivers/gpu/drm/vkms/vkms_formats.h b/drivers/gpu/drm/vkms/vkms_formats.h index 43b7c19790181..c5b113495d0c0 100644 --- a/drivers/gpu/drm/vkms/vkms_formats.h +++ b/drivers/gpu/drm/vkms/vkms_formats.h @@ -5,7 +5,7 @@
#include "vkms_drv.h"
-void *get_frame_to_line_function(u32 format); +void *get_pixel_conversion_function(u32 format);
void *get_line_to_frame_function(u32 format);
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index c3a845220e10c..80e964589cecb 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -123,7 +123,7 @@ 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); + vkms_plane_state->pixel_read = get_pixel_conversion_function(fmt); }
static int vkms_plane_atomic_check(struct drm_plane *plane,