Hi Rajeev, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master v5.13-rc3 next-20210528] [cannot apply to drm/drm-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Rajeev-Nandan/drm-Support-basic-DPCD-backlight-in-panel-simple-and-add-a-new-panel-ATNA33XC20/20210530-235810 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-a006-20210530 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project bc6799f2f79f0ae87e9f1ebf9d25ba799fbd25a9) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://github.com/0day-ci/linux/commit/fedf88beabe2c179d593bbb61ff5df62ac909fa1 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Rajeev-Nandan/drm-Support-basic-DPCD-backlight-in-panel-simple-and-add-a-new-panel-ATNA33XC20/20210530-235810 git checkout fedf88beabe2c179d593bbb61ff5df62ac909fa1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/gpu/drm/panel/panel-simple.c:796:39: error: no member named 'aux' in 'struct panel_simple' if (!panel->base.backlight && panel->aux) { ~~~~~ ^ include/linux/compiler.h:56:47: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~ include/linux/compiler.h:58:52: note: expanded from macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ >> drivers/gpu/drm/panel/panel-simple.c:796:39: error: no member named 'aux' in 'struct panel_simple' if (!panel->base.backlight && panel->aux) { ~~~~~ ^ include/linux/compiler.h:56:47: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~ include/linux/compiler.h:58:61: note: expanded from macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ >> drivers/gpu/drm/panel/panel-simple.c:796:39: error: no member named 'aux' in 'struct panel_simple' if (!panel->base.backlight && panel->aux) { ~~~~~ ^ include/linux/compiler.h:56:47: note: expanded from macro 'if' #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) ^~~~ include/linux/compiler.h:58:86: note: expanded from macro '__trace_if_var' #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) ^~~~ include/linux/compiler.h:69:3: note: expanded from macro '__trace_if_value' (cond) ? \ ^~~~ drivers/gpu/drm/panel/panel-simple.c:797:57: error: no member named 'aux' in 'struct panel_simple' err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); ~~~~~ ^ 4 errors generated. vim +796 drivers/gpu/drm/panel/panel-simple.c 659 660 static int panel_simple_probe(struct device *dev, const struct panel_desc *desc) 661 { 662 struct panel_simple *panel; 663 struct display_timing dt; 664 struct device_node *ddc; 665 int connector_type; 666 u32 bus_flags; 667 int err; 668 669 panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL); 670 if (!panel) 671 return -ENOMEM; 672 673 panel->enabled = false; 674 panel->prepared_time = 0; 675 panel->desc = desc; 676 677 panel->no_hpd = of_property_read_bool(dev->of_node, "no-hpd"); 678 if (!panel->no_hpd) { 679 err = panel_simple_get_hpd_gpio(dev, panel); 680 if (err) 681 return err; 682 } 683 684 panel->supply = devm_regulator_get(dev, "power"); 685 if (IS_ERR(panel->supply)) 686 return PTR_ERR(panel->supply); 687 688 panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", 689 GPIOD_OUT_LOW); 690 if (IS_ERR(panel->enable_gpio)) { 691 err = PTR_ERR(panel->enable_gpio); 692 if (err != -EPROBE_DEFER) 693 dev_err(dev, "failed to request GPIO: %d\n", err); 694 return err; 695 } 696 697 err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); 698 if (err) { 699 dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); 700 return err; 701 } 702 703 ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); 704 if (ddc) { 705 panel->ddc = of_find_i2c_adapter_by_node(ddc); 706 of_node_put(ddc); 707 708 if (!panel->ddc) 709 return -EPROBE_DEFER; 710 } 711 712 if (desc == &panel_dpi) { 713 /* Handle the generic panel-dpi binding */ 714 err = panel_dpi_probe(dev, panel); 715 if (err) 716 goto free_ddc; 717 } else { 718 if (!of_get_display_timing(dev->of_node, "panel-timing", &dt)) 719 panel_simple_parse_panel_timing_node(dev, panel, &dt); 720 } 721 722 connector_type = desc->connector_type; 723 /* Catch common mistakes for panels. */ 724 switch (connector_type) { 725 case 0: 726 dev_warn(dev, "Specify missing connector_type\n"); 727 connector_type = DRM_MODE_CONNECTOR_DPI; 728 break; 729 case DRM_MODE_CONNECTOR_LVDS: 730 WARN_ON(desc->bus_flags & 731 ~(DRM_BUS_FLAG_DE_LOW | 732 DRM_BUS_FLAG_DE_HIGH | 733 DRM_BUS_FLAG_DATA_MSB_TO_LSB | 734 DRM_BUS_FLAG_DATA_LSB_TO_MSB)); 735 WARN_ON(desc->bus_format != MEDIA_BUS_FMT_RGB666_1X7X3_SPWG && 736 desc->bus_format != MEDIA_BUS_FMT_RGB888_1X7X4_SPWG && 737 desc->bus_format != MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA); 738 WARN_ON(desc->bus_format == MEDIA_BUS_FMT_RGB666_1X7X3_SPWG && 739 desc->bpc != 6); 740 WARN_ON((desc->bus_format == MEDIA_BUS_FMT_RGB888_1X7X4_SPWG || 741 desc->bus_format == MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA) && 742 desc->bpc != 8); 743 break; 744 case DRM_MODE_CONNECTOR_eDP: 745 if (desc->bus_format == 0) 746 dev_warn(dev, "Specify missing bus_format\n"); 747 if (desc->bpc != 6 && desc->bpc != 8) 748 dev_warn(dev, "Expected bpc in {6,8} but got: %u\n", desc->bpc); 749 break; 750 case DRM_MODE_CONNECTOR_DSI: 751 if (desc->bpc != 6 && desc->bpc != 8) 752 dev_warn(dev, "Expected bpc in {6,8} but got: %u\n", desc->bpc); 753 break; 754 case DRM_MODE_CONNECTOR_DPI: 755 bus_flags = DRM_BUS_FLAG_DE_LOW | 756 DRM_BUS_FLAG_DE_HIGH | 757 DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE | 758 DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE | 759 DRM_BUS_FLAG_DATA_MSB_TO_LSB | 760 DRM_BUS_FLAG_DATA_LSB_TO_MSB | 761 DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE | 762 DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE; 763 if (desc->bus_flags & ~bus_flags) 764 dev_warn(dev, "Unexpected bus_flags(%d)\n", desc->bus_flags & ~bus_flags); 765 if (!(desc->bus_flags & bus_flags)) 766 dev_warn(dev, "Specify missing bus_flags\n"); 767 if (desc->bus_format == 0) 768 dev_warn(dev, "Specify missing bus_format\n"); 769 if (desc->bpc != 6 && desc->bpc != 8) 770 dev_warn(dev, "Expected bpc in {6,8} but got: %u\n", desc->bpc); 771 break; 772 default: 773 dev_warn(dev, "Specify a valid connector_type: %d\n", desc->connector_type); 774 connector_type = DRM_MODE_CONNECTOR_DPI; 775 break; 776 } 777 778 dev_set_drvdata(dev, panel); 779 780 /* 781 * We use runtime PM for prepare / unprepare since those power the panel 782 * on and off and those can be very slow operations. This is important 783 * to optimize powering the panel on briefly to read the EDID before 784 * fully enabling the panel. 785 */ 786 pm_runtime_enable(dev); 787 pm_runtime_set_autosuspend_delay(dev, 1000); 788 pm_runtime_use_autosuspend(dev); 789 790 drm_panel_init(&panel->base, dev, &panel_simple_funcs, connector_type); 791 792 err = drm_panel_of_backlight(&panel->base); 793 if (err) 794 goto disable_pm_runtime; 795 > 796 if (!panel->base.backlight && panel->aux) { 797 err = drm_panel_dp_aux_backlight(&panel->base, panel->aux); 798 if (err) 799 goto disable_pm_runtime; 800 } 801 802 drm_panel_add(&panel->base); 803 804 return 0; 805 806 disable_pm_runtime: 807 pm_runtime_disable(dev); 808 free_ddc: 809 if (panel->ddc) 810 put_device(&panel->ddc->dev); 811 812 return err; 813 } 814 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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