tree: https://github.com/superna9999/linux amlogic/v5.9/dw-hdmi-yuv-for-hdmi-only head: 20ce0db3ea1736c26c86d92427ca50ba600088de commit: 20ce0db3ea1736c26c86d92427ca50ba600088de [1/1] drm/bridge: synopsys: dw-hdmi: disable YUV negociation for DVI monitors config: x86_64-randconfig-m001-20200807 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; smatch warnings: drivers/gpu/drm/bridge/synopsys/dw-hdmi.c:2610 dw_hdmi_bridge_atomic_get_output_bus_fmts() warn: maybe use && instead of & vim +2610 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c 2544 2545 static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge, 2546 struct drm_bridge_state *bridge_state, 2547 struct drm_crtc_state *crtc_state, 2548 struct drm_connector_state *conn_state, 2549 unsigned int *num_output_fmts) 2550 { 2551 struct drm_connector *conn = conn_state->connector; 2552 struct drm_display_info *info = &conn->display_info; 2553 struct drm_display_mode *mode = &crtc_state->mode; 2554 u8 max_bpc = conn_state->max_requested_bpc; 2555 bool is_hdmi2_sink = info->hdmi.scdc.supported || 2556 (info->color_formats & DRM_COLOR_FORMAT_YCRCB420); 2557 u32 *output_fmts; 2558 unsigned int i = 0; 2559 2560 *num_output_fmts = 0; 2561 2562 output_fmts = kcalloc(MAX_OUTPUT_SEL_FORMATS, sizeof(*output_fmts), 2563 GFP_KERNEL); 2564 if (!output_fmts) 2565 return NULL; 2566 2567 /* If dw-hdmi is the only bridge, avoid negociating with ourselves */ 2568 if (list_is_singular(&bridge->encoder->bridge_chain)) { 2569 *num_output_fmts = 1; 2570 output_fmts[0] = MEDIA_BUS_FMT_FIXED; 2571 2572 return output_fmts; 2573 } 2574 2575 /* 2576 * If the current mode enforces 4:2:0, force the output but format 2577 * to 4:2:0 and do not add the YUV422/444/RGB formats 2578 */ 2579 if (info->is_hdmi && conn->ycbcr_420_allowed && 2580 (drm_mode_is_420_only(info, mode) || 2581 (is_hdmi2_sink && drm_mode_is_420_also(info, mode)))) { 2582 2583 /* Order bus formats from 16bit to 8bit if supported */ 2584 if (max_bpc >= 16 && info->bpc == 16 && 2585 (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_48)) 2586 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY16_0_5X48; 2587 2588 if (max_bpc >= 12 && info->bpc >= 12 && 2589 (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_36)) 2590 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY12_0_5X36; 2591 2592 if (max_bpc >= 10 && info->bpc >= 10 && 2593 (info->hdmi.y420_dc_modes & DRM_EDID_YCBCR420_DC_30)) 2594 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY10_0_5X30; 2595 2596 /* Default 8bit fallback */ 2597 output_fmts[i++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24; 2598 2599 *num_output_fmts = i; 2600 2601 return output_fmts; 2602 } 2603 2604 /* 2605 * Order bus formats from 16bit to 8bit and from YUV422 to RGB 2606 * if supported. In any case the default RGB888 format is added 2607 */ 2608 2609 if (max_bpc >= 16 && info->bpc == 16) { 2611 output_fmts[i++] = MEDIA_BUS_FMT_YUV16_1X48; 2612 2613 output_fmts[i++] = MEDIA_BUS_FMT_RGB161616_1X48; 2614 } 2615 2616 if (max_bpc >= 12 && info->bpc >= 12) { 2617 if (info->is_hdmi && 2618 info->color_formats & DRM_COLOR_FORMAT_YCRCB422) 2619 output_fmts[i++] = MEDIA_BUS_FMT_UYVY12_1X24; 2620 2621 if (info->is_hdmi && 2622 info->color_formats & DRM_COLOR_FORMAT_YCRCB444) 2623 output_fmts[i++] = MEDIA_BUS_FMT_YUV12_1X36; 2624 2625 output_fmts[i++] = MEDIA_BUS_FMT_RGB121212_1X36; 2626 } 2627 2628 if (max_bpc >= 10 && info->bpc >= 10) { 2629 if (info->is_hdmi && 2630 info->color_formats & DRM_COLOR_FORMAT_YCRCB422) 2631 output_fmts[i++] = MEDIA_BUS_FMT_UYVY10_1X20; 2632 2633 if (info->is_hdmi && 2634 info->color_formats & DRM_COLOR_FORMAT_YCRCB444) 2635 output_fmts[i++] = MEDIA_BUS_FMT_YUV10_1X30; 2636 2637 output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30; 2638 } 2639 2640 if (info->is_hdmi && 2641 info->color_formats & DRM_COLOR_FORMAT_YCRCB422) 2642 output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16; 2643 2644 if (info->is_hdmi && 2645 info->color_formats & DRM_COLOR_FORMAT_YCRCB444) 2646 output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24; 2647 2648 /* Default 8bit RGB fallback */ 2649 output_fmts[i++] = MEDIA_BUS_FMT_RGB888_1X24; 2650 2651 *num_output_fmts = i; 2652 2653 return output_fmts; 2654 } 2655 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org