Hi Hermes, kernel test robot noticed the following build errors: [auto build test ERROR on b8128f7815ff135f0333c1b46dcdf1543c41b860] url: https://github.com/intel-lab-lkp/linux/commits/Hermes-Wu-via-B4-Relay/drm-bridge-it6505-Change-definition-of-AUX_FIFO_MAX_SIZE/20241016-155607 base: b8128f7815ff135f0333c1b46dcdf1543c41b860 patch link: https://lore.kernel.org/r/20241016-upstream-v6-v6-3-4d93a0c46de1%40ite.com.tw patch subject: [PATCH v6 03/10] drm/bridge: it6505: add AUX operation for HDCP KSV list read config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20241020/202410200624.sr8sF1ya-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241020/202410200624.sr8sF1ya-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410200624.sr8sF1ya-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/gpu/drm/bridge/ite-it6505.c: In function 'it6505_aux_operation': >> drivers/gpu/drm/bridge/ite-it6505.c:1004:47: error: implicit declaration of function 'FIELD_GET' [-Wimplicit-function-declaration] 1004 | it6505_write(it6505, REG_AUX_CMD_REQ, FIELD_GET(M_AUX_REQ_CMD, cmd)); | ^~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GET_FREE_REGION Depends on [n]: SPARSEMEM [=n] Selected by [m]: - RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=m] vim +/FIELD_GET +1004 drivers/gpu/drm/bridge/ite-it6505.c 956 957 static ssize_t it6505_aux_operation(struct it6505 *it6505, 958 enum aux_cmd_type cmd, 959 unsigned int address, u8 *buffer, 960 size_t size, enum aux_cmd_reply *reply) 961 { 962 int i, ret; 963 bool aux_write_check = false; 964 965 if (!it6505_get_sink_hpd_status(it6505)) 966 return -EIO; 967 968 /* set AUX user mode */ 969 it6505_set_bits(it6505, REG_AUX_CTRL, AUX_USER_MODE, AUX_USER_MODE); 970 971 aux_op_start: 972 /* HW AUX FIFO supports only EDID and DCPD KSV FIFO area */ 973 if (cmd == CMD_AUX_I2C_EDID_READ || cmd == CMD_AUX_GET_KSV_LIST) { 974 /* AUX EDID FIFO has max length of AUX_FIFO_MAX_SIZE bytes. */ 975 size = min_t(size_t, size, AUX_FIFO_MAX_SIZE); 976 /* Enable AUX FIFO read back and clear FIFO */ 977 it6505_set_bits(it6505, REG_AUX_CTRL, 978 AUX_EN_FIFO_READ | CLR_EDID_FIFO, 979 AUX_EN_FIFO_READ | CLR_EDID_FIFO); 980 981 it6505_set_bits(it6505, REG_AUX_CTRL, 982 AUX_EN_FIFO_READ | CLR_EDID_FIFO, 983 AUX_EN_FIFO_READ); 984 } else { 985 /* The DP AUX transmit buffer has 4 bytes. */ 986 size = min_t(size_t, size, 4); 987 it6505_set_bits(it6505, REG_AUX_CTRL, AUX_NO_SEGMENT_WR, 988 AUX_NO_SEGMENT_WR); 989 } 990 991 /* Start Address[7:0] */ 992 it6505_write(it6505, REG_AUX_ADR_0_7, (address >> 0) & 0xFF); 993 /* Start Address[15:8] */ 994 it6505_write(it6505, REG_AUX_ADR_8_15, (address >> 8) & 0xFF); 995 /* WriteNum[3:0]+StartAdr[19:16] */ 996 it6505_write(it6505, REG_AUX_ADR_16_19, 997 ((address >> 16) & 0x0F) | ((size - 1) << 4)); 998 999 if (cmd == CMD_AUX_NATIVE_WRITE) 1000 regmap_bulk_write(it6505->regmap, REG_AUX_OUT_DATA0, buffer, 1001 size); 1002 1003 /* Aux Fire */ > 1004 it6505_write(it6505, REG_AUX_CMD_REQ, FIELD_GET(M_AUX_REQ_CMD, cmd)); 1005 1006 ret = it6505_aux_wait(it6505); 1007 if (ret < 0) 1008 goto aux_op_err; 1009 1010 ret = it6505_read(it6505, REG_AUX_ERROR_STS); 1011 if (ret < 0) 1012 goto aux_op_err; 1013 1014 switch ((ret >> 6) & 0x3) { 1015 case 0: 1016 *reply = REPLY_ACK; 1017 break; 1018 case 1: 1019 *reply = REPLY_DEFER; 1020 ret = -EAGAIN; 1021 goto aux_op_err; 1022 case 2: 1023 *reply = REPLY_NACK; 1024 ret = -EIO; 1025 goto aux_op_err; 1026 case 3: 1027 ret = -ETIMEDOUT; 1028 goto aux_op_err; 1029 } 1030 1031 /* Read back Native Write data */ 1032 if (cmd == CMD_AUX_NATIVE_WRITE) { 1033 aux_write_check = true; 1034 cmd = CMD_AUX_NATIVE_READ; 1035 goto aux_op_start; 1036 } 1037 1038 if (cmd == CMD_AUX_I2C_EDID_READ || cmd == CMD_AUX_GET_KSV_LIST) { 1039 for (i = 0; i < size; i++) { 1040 ret = it6505_read(it6505, REG_AUX_DATA_FIFO); 1041 if (ret < 0) 1042 goto aux_op_err; 1043 buffer[i] = ret; 1044 } 1045 } else { 1046 for (i = 0; i < size; i++) { 1047 ret = it6505_read(it6505, REG_AUX_DATA_0_7 + i); 1048 if (ret < 0) 1049 goto aux_op_err; 1050 1051 if (aux_write_check && buffer[size - 1 - i] != ret) { 1052 ret = -EINVAL; 1053 goto aux_op_err; 1054 } 1055 1056 buffer[size - 1 - i] = ret; 1057 } 1058 } 1059 1060 ret = i; 1061 1062 aux_op_err: 1063 if (cmd == CMD_AUX_I2C_EDID_READ || cmd == CMD_AUX_GET_KSV_LIST) { 1064 /* clear AUX FIFO */ 1065 it6505_set_bits(it6505, REG_AUX_CTRL, 1066 AUX_EN_FIFO_READ | CLR_EDID_FIFO, 1067 AUX_EN_FIFO_READ | CLR_EDID_FIFO); 1068 it6505_set_bits(it6505, REG_AUX_CTRL, 1069 AUX_EN_FIFO_READ | CLR_EDID_FIFO, 0x00); 1070 } 1071 1072 /* Leave AUX user mode */ 1073 it6505_set_bits(it6505, REG_AUX_CTRL, AUX_USER_MODE, 0); 1074 1075 return ret; 1076 } 1077 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
