Re: [PATCH v1 1/5] drm/msm/dpu: add support for DSC encoder v1.2 engine

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Hi Kuogee,

kernel test robot noticed the following build errors:

[auto build test ERROR on drm-misc/drm-misc-next]
[also build test ERROR on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.3-rc7 next-20230420]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Kuogee-Hsieh/drm-msm-dpu-add-support-for-DSC-encoder-v1-2-engine/20230421-072925
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/1682033114-28483-2-git-send-email-quic_khsieh%40quicinc.com
patch subject: [PATCH v1 1/5] drm/msm/dpu: add support for DSC encoder v1.2 engine
config: riscv-randconfig-r013-20230421 (https://download.01.org/0day-ci/archive/20230422/202304220258.dmrglaf1-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 437b7602e4a998220871de78afcb020b9c14a661)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/1c3eede9e4f8fc63f52eddb0c55f63d59fad4b68
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kuogee-Hsieh/drm-msm-dpu-add-support-for-DSC-encoder-v1-2-engine/20230421-072925
        git checkout 1c3eede9e4f8fc63f52eddb0c55f63d59fad4b68
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/gpu/drm/msm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202304220258.dmrglaf1-lkp@xxxxxxxxx/

All error/warnings (new ones prefixed by >>):

>> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c:227:24: error: call to undeclared function 'drm_dsc_calculate_flatness_det_thresh'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           det_thresh_flatness = drm_dsc_calculate_flatness_det_thresh(dsc);
                                 ^
>> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c:124:16: warning: variable 'off' set but not used [-Wunused-but-set-variable]
           void __iomem *off;
                         ^
   1 warning and 1 error generated.


vim +/drm_dsc_calculate_flatness_det_thresh +227 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c

   112	
   113	static void dpu_hw_dsc_config_1_2(struct dpu_hw_dsc *hw_dsc,
   114				      struct drm_dsc_config *dsc,
   115				      u32 mode,
   116				      u32 initial_lines)
   117	{
   118		struct dpu_hw_blk_reg_map *hw;
   119		u32 offset;
   120		u32 data = 0;
   121		u32 det_thresh_flatness;
   122		u32 num_active_ss_per_enc;
   123		u32 bpp;
 > 124		void __iomem *off;
   125	
   126		if (!hw_dsc || !dsc)
   127			return;
   128	
   129		hw = &hw_dsc->hw;
   130	
   131		_dsc_subblk_offset(hw_dsc, DPU_DSC_ENC, &offset);
   132	
   133		if (mode & DSC_MODE_SPLIT_PANEL)
   134			data |= BIT(0);
   135	
   136		if (mode & DSC_MODE_MULTIPLEX)
   137			data |= BIT(1);
   138	
   139		num_active_ss_per_enc = dsc->slice_count;
   140		if (mode & DSC_MODE_MULTIPLEX)
   141			num_active_ss_per_enc = dsc->slice_count >> 1;
   142	
   143		data |= (num_active_ss_per_enc & 0x3) << 7;
   144	
   145		DPU_REG_WRITE(hw, DSC_CMN_MAIN_CNF, data);
   146	
   147		data = (initial_lines & 0xff);
   148	
   149		if (mode & DSC_MODE_VIDEO)
   150			data |= BIT(9);
   151	
   152		data |= (_dsc_calc_ob_max_addr(hw_dsc, num_active_ss_per_enc) << 18);
   153	
   154		DPU_REG_WRITE(hw, offset + ENC_DF_CTRL, data);
   155	
   156		data = (dsc->dsc_version_minor & 0xf) << 28;
   157		if (dsc->dsc_version_minor == 0x2) {
   158			if (dsc->native_422)
   159				data |= BIT(22);
   160			if (dsc->native_420)
   161				data |= BIT(21);
   162		}
   163	
   164		bpp = dsc->bits_per_pixel;
   165		/* as per hw requirement bpp should be programmed
   166		 * twice the actual value in case of 420 or 422 encoding
   167		 */
   168		if (dsc->native_422 || dsc->native_420)
   169			bpp = 2 * bpp;
   170		data |= (dsc->block_pred_enable ? 1 : 0) << 20;
   171		data |= bpp << 10;
   172		data |= (dsc->line_buf_depth & 0xf) << 6;
   173		data |= dsc->convert_rgb << 4;
   174		data |= dsc->bits_per_component & 0xf;
   175	
   176		DPU_REG_WRITE(hw, offset + DSC_MAIN_CONF, data);
   177	
   178		data = (dsc->pic_width & 0xffff) |
   179			((dsc->pic_height & 0xffff) << 16);
   180	
   181		DPU_REG_WRITE(hw, offset + DSC_PICTURE_SIZE, data);
   182	
   183		data = (dsc->slice_width & 0xffff) |
   184			((dsc->slice_height & 0xffff) << 16);
   185	
   186		DPU_REG_WRITE(hw, offset + DSC_SLICE_SIZE, data);
   187	
   188		DPU_REG_WRITE(hw, offset + DSC_MISC_SIZE,
   189				(dsc->slice_chunk_size) & 0xffff);
   190	
   191		data = (dsc->initial_xmit_delay & 0xffff) |
   192			((dsc->initial_dec_delay & 0xffff) << 16);
   193	
   194		DPU_REG_WRITE(hw, offset + DSC_HRD_DELAYS, data);
   195	
   196		DPU_REG_WRITE(hw, offset + DSC_RC_SCALE,
   197				dsc->initial_scale_value & 0x3f);
   198	
   199		data = (dsc->scale_increment_interval & 0xffff) |
   200			((dsc->scale_decrement_interval & 0x7ff) << 16);
   201	
   202		DPU_REG_WRITE(hw, offset + DSC_RC_SCALE_INC_DEC, data);
   203	
   204		data = (dsc->first_line_bpg_offset & 0x1f) |
   205			((dsc->second_line_bpg_offset & 0x1f) << 5);
   206	
   207		DPU_REG_WRITE(hw, offset + DSC_RC_OFFSETS_1, data);
   208	
   209		data = (dsc->nfl_bpg_offset & 0xffff) |
   210			((dsc->slice_bpg_offset & 0xffff) << 16);
   211	
   212		DPU_REG_WRITE(hw, offset + DSC_RC_OFFSETS_2, data);
   213	
   214		data = (dsc->initial_offset & 0xffff) |
   215			((dsc->final_offset & 0xffff) << 16);
   216	
   217		DPU_REG_WRITE(hw, offset + DSC_RC_OFFSETS_3, data);
   218	
   219		data = (dsc->nsl_bpg_offset & 0xffff) |
   220			((dsc->second_line_offset_adj & 0xffff) << 16);
   221	
   222		DPU_REG_WRITE(hw, offset + DSC_RC_OFFSETS_4, data);
   223	
   224		data = (dsc->flatness_min_qp & 0x1f);
   225		data |= (dsc->flatness_max_qp & 0x1f) << 5;
   226	
 > 227		det_thresh_flatness = drm_dsc_calculate_flatness_det_thresh(dsc);
   228		data |= (det_thresh_flatness & 0xff) << 10;
   229	
   230		DPU_REG_WRITE(hw, offset + DSC_FLATNESS_QP, data);
   231	
   232		DPU_REG_WRITE(hw, offset + DSC_RC_MODEL_SIZE,
   233				(dsc->rc_model_size) & 0xffff);
   234	
   235		data = dsc->rc_edge_factor & 0xf;
   236		data |= (dsc->rc_quant_incr_limit0 & 0x1f) << 8;
   237		data |= (dsc->rc_quant_incr_limit1 & 0x1f) << 13;
   238		data |= (dsc->rc_tgt_offset_high & 0xf) << 20;
   239		data |= (dsc->rc_tgt_offset_low & 0xf) << 24;
   240	
   241		DPU_REG_WRITE(hw, offset + DSC_RC_CONFIG, data);
   242	
   243		/* program the dsc wrapper */
   244		_dsc_subblk_offset(hw_dsc, DPU_DSC_CTL, &offset);
   245	
   246		off = hw->blk_addr + offset;
   247	
   248		data = BIT(0); /* encoder enable */
   249		if (dsc->native_422)
   250			data |= BIT(8);
   251		else if (dsc->native_420)
   252			data |= BIT(9);
   253		if (!dsc->convert_rgb)
   254			data |= BIT(10);
   255		if (dsc->bits_per_component == 8)
   256			data |= BIT(11);
   257		if (mode & DSC_MODE_SPLIT_PANEL)
   258			data |= BIT(12);
   259		if (mode & DSC_MODE_MULTIPLEX)
   260			data |= BIT(13);
   261		if (!(mode & DSC_MODE_VIDEO))
   262			data |= BIT(17);
   263	
   264		DPU_REG_WRITE(hw, offset + DSC_CFG, data);
   265	}
   266	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests



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