Hi Christoph, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-exynos/exynos-drm-next] [also build test ERROR on v4.19-rc8 next-20181019] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Christoph-Manszewski/drm-exynos-decon-Make-plane-alpha-configurable/20181019-053544 base: https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm64 All errors (new ones prefixed by >>): drivers/gpu/drm/exynos/exynos5433_drm_decon.c: In function 'decon_win_set_pixfmt': >> drivers/gpu/drm/exynos/exynos5433_drm_decon.c:337:3: error: 'pixel_alpha' undeclared (first use in this function); did you mean 'isalpha'? pixel_alpha = state->base.pixel_blend_mode; ^~~~~~~~~~~ isalpha drivers/gpu/drm/exynos/exynos5433_drm_decon.c:337:3: note: each undeclared identifier is reported only once for each function it appears in >> drivers/gpu/drm/exynos/exynos5433_drm_decon.c:385:3: error: too few arguments to function 'decon_win_set_bldmod' decon_win_set_bldmod(ctx, win, alpha); ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/exynos/exynos5433_drm_decon.c:298:13: note: declared here static void decon_win_set_bldmod(struct decon_context *ctx, unsigned int win, ^~~~~~~~~~~~~~~~~~~~ vim +337 drivers/gpu/drm/exynos/exynos5433_drm_decon.c 326 327 static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win, 328 struct drm_framebuffer *fb) 329 { 330 struct exynos_drm_plane plane = ctx->planes[win]; 331 struct exynos_drm_plane_state *state = 332 to_exynos_plane_state(plane.base.state); 333 unsigned int alpha = state->base.alpha; 334 unsigned long val; 335 336 if (fb->format->has_alpha) > 337 pixel_alpha = state->base.pixel_blend_mode; 338 else 339 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE; 340 341 val = readl(ctx->addr + DECON_WINCONx(win)); 342 val &= WINCONx_ENWIN_F; 343 344 switch (fb->format->format) { 345 case DRM_FORMAT_XRGB1555: 346 val |= WINCONx_BPPMODE_16BPP_I1555; 347 val |= WINCONx_HAWSWP_F; 348 val |= WINCONx_BURSTLEN_16WORD; 349 break; 350 case DRM_FORMAT_RGB565: 351 val |= WINCONx_BPPMODE_16BPP_565; 352 val |= WINCONx_HAWSWP_F; 353 val |= WINCONx_BURSTLEN_16WORD; 354 break; 355 case DRM_FORMAT_XRGB8888: 356 val |= WINCONx_BPPMODE_24BPP_888; 357 val |= WINCONx_WSWP_F; 358 val |= WINCONx_BURSTLEN_16WORD; 359 break; 360 case DRM_FORMAT_ARGB8888: 361 default: 362 val |= WINCONx_BPPMODE_32BPP_A8888; 363 val |= WINCONx_WSWP_F; 364 val |= WINCONx_BURSTLEN_16WORD; 365 break; 366 } 367 368 DRM_DEBUG_KMS("cpp = %u\n", fb->format->cpp[0]); 369 370 /* 371 * In case of exynos, setting dma-burst to 16Word causes permanent 372 * tearing for very small buffers, e.g. cursor buffer. Burst Mode 373 * switching which is based on plane size is not recommended as 374 * plane size varies a lot towards the end of the screen and rapid 375 * movement causes unstable DMA which results into iommu crash/tear. 376 */ 377 378 if (fb->width < MIN_FB_WIDTH_FOR_16WORD_BURST) { 379 val &= ~WINCONx_BURSTLEN_MASK; 380 val |= WINCONx_BURSTLEN_8WORD; 381 } 382 decon_set_bits(ctx, DECON_WINCONx(win), ~WINCONx_BLEND_MODE_MASK, val); 383 384 if (win > 0) { > 385 decon_win_set_bldmod(ctx, win, alpha); 386 decon_win_set_bldeq(ctx, win, alpha, pixel_alpha); 387 } 388 } 389 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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