tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 2933a1156742d8c47550493a77af8e2d81cf3c84 commit: 8774029f76b9806f2f3586bb0502408076767fd5 [466/11428] drm/amd/display: Add DCN35 CLK_MGR config: i386-randconfig-141-20230905 (https://download.01.org/0day-ci/archive/20231012/202310121157.aRky475m-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce: (https://download.01.org/0day-ci/archive/20231012/202310121157.aRky475m-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/202310121157.aRky475m-lkp@xxxxxxxxx/ New smatch warnings: drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c:292 dcn35_update_clocks() warn: inconsistent indenting drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c:919 dcn35_clk_mgr_construct() warn: inconsistent indenting drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c:980 dcn35_clk_mgr_construct() warn: variable dereferenced before check 'ctx->dc_bios' (see line 913) drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c:980 dcn35_clk_mgr_construct() warn: variable dereferenced before check 'ctx->dc_bios->integrated_info' (see line 913) Old smatch warnings: drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c:921 dcn35_clk_mgr_construct() warn: inconsistent indenting vim +292 drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c 213 214 void dcn35_update_clocks(struct clk_mgr *clk_mgr_base, 215 struct dc_state *context, 216 bool safe_to_lower) 217 { 218 union dmub_rb_cmd cmd; 219 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); 220 struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk; 221 struct dc *dc = clk_mgr_base->ctx->dc; 222 int display_count; 223 bool update_dppclk = false; 224 bool update_dispclk = false; 225 bool dpp_clock_lowered = false; 226 227 if (dc->work_arounds.skip_clock_update) 228 return; 229 230 /* 231 * if it is safe to lower, but we are already in the lower state, we don't have to do anything 232 * also if safe to lower is false, we just go in the higher state 233 */ 234 if (safe_to_lower) { 235 if (new_clocks->zstate_support != DCN_ZSTATE_SUPPORT_DISALLOW && 236 new_clocks->zstate_support != clk_mgr_base->clks.zstate_support) { 237 dcn35_smu_set_zstate_support(clk_mgr, new_clocks->zstate_support); 238 dm_helpers_enable_periodic_detection(clk_mgr_base->ctx, true); 239 clk_mgr_base->clks.zstate_support = new_clocks->zstate_support; 240 } 241 242 if (clk_mgr_base->clks.dtbclk_en && !new_clocks->dtbclk_en) { 243 dcn35_smu_set_dtbclk(clk_mgr, false); 244 clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en; 245 } 246 /* check that we're not already in lower */ 247 if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_LOW_POWER) { 248 display_count = dcn35_get_active_display_cnt_wa(dc, context); 249 /* if we can go lower, go lower */ 250 if (display_count == 0) 251 clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_LOW_POWER; 252 } 253 } else { 254 if (new_clocks->zstate_support == DCN_ZSTATE_SUPPORT_DISALLOW && 255 new_clocks->zstate_support != clk_mgr_base->clks.zstate_support) { 256 dcn35_smu_set_zstate_support(clk_mgr, DCN_ZSTATE_SUPPORT_DISALLOW); 257 dm_helpers_enable_periodic_detection(clk_mgr_base->ctx, false); 258 clk_mgr_base->clks.zstate_support = new_clocks->zstate_support; 259 } 260 261 if (!clk_mgr_base->clks.dtbclk_en && new_clocks->dtbclk_en) { 262 dcn35_smu_set_dtbclk(clk_mgr, true); 263 dcn35_update_clocks_update_dtb_dto(clk_mgr, context, clk_mgr_base->clks.ref_dtbclk_khz); 264 clk_mgr_base->clks.dtbclk_en = new_clocks->dtbclk_en; 265 } 266 267 /* check that we're not already in D0 */ 268 if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_MISSION_MODE) { 269 union display_idle_optimization_u idle_info = { 0 }; 270 271 dcn35_smu_set_display_idle_optimization(clk_mgr, idle_info.data); 272 /* update power state */ 273 clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_MISSION_MODE; 274 } 275 } 276 if (dc->debug.force_min_dcfclk_mhz > 0) 277 new_clocks->dcfclk_khz = (new_clocks->dcfclk_khz > (dc->debug.force_min_dcfclk_mhz * 1000)) ? 278 new_clocks->dcfclk_khz : (dc->debug.force_min_dcfclk_mhz * 1000); 279 280 if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) { 281 clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz; 282 dcn35_smu_set_hard_min_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_khz); 283 } 284 285 if (should_set_clock(safe_to_lower, 286 new_clocks->dcfclk_deep_sleep_khz, clk_mgr_base->clks.dcfclk_deep_sleep_khz)) { 287 clk_mgr_base->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz; 288 dcn35_smu_set_min_deep_sleep_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_deep_sleep_khz); 289 } 290 291 // workaround: Limit dppclk to 100Mhz to avoid lower eDP panel switch to plus 4K monitor underflow. > 292 if (new_clocks->dppclk_khz < 100000) 293 new_clocks->dppclk_khz = 100000; 294 295 if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) { 296 if (clk_mgr->base.clks.dppclk_khz > new_clocks->dppclk_khz) 297 dpp_clock_lowered = true; 298 clk_mgr_base->clks.dppclk_khz = new_clocks->dppclk_khz; 299 update_dppclk = true; 300 } 301 302 if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) { 303 dcn35_disable_otg_wa(clk_mgr_base, context, true); 304 305 clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz; 306 dcn35_smu_set_dispclk(clk_mgr, clk_mgr_base->clks.dispclk_khz); 307 dcn35_disable_otg_wa(clk_mgr_base, context, false); 308 309 update_dispclk = true; 310 } 311 312 if (!new_clocks->dtbclk_en) { 313 new_clocks->ref_dtbclk_khz = 600000; 314 } 315 316 /* clock limits are received with MHz precision, divide by 1000 to prevent setting clocks at every call */ 317 if (!dc->debug.disable_dtb_ref_clk_switch && 318 should_set_clock(safe_to_lower, new_clocks->ref_dtbclk_khz / 1000, clk_mgr_base->clks.ref_dtbclk_khz / 1000)) { 319 /* DCCG requires KHz precision for DTBCLK */ 320 dcn35_smu_set_dtbclk(clk_mgr, true); 321 322 dcn35_update_clocks_update_dtb_dto(clk_mgr, context, clk_mgr_base->clks.ref_dtbclk_khz); 323 } 324 325 if (dpp_clock_lowered) { 326 // increase per DPP DTO before lowering global dppclk 327 dcn35_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); 328 dcn35_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz); 329 } else { 330 // increase global DPPCLK before lowering per DPP DTO 331 if (update_dppclk || update_dispclk) 332 dcn35_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz); 333 dcn35_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower); 334 } 335 336 // notify DMCUB of latest clocks 337 memset(&cmd, 0, sizeof(cmd)); 338 cmd.notify_clocks.header.type = DMUB_CMD__CLK_MGR; 339 cmd.notify_clocks.header.sub_type = DMUB_CMD__CLK_MGR_NOTIFY_CLOCKS; 340 cmd.notify_clocks.clocks.dcfclk_khz = clk_mgr_base->clks.dcfclk_khz; 341 cmd.notify_clocks.clocks.dcfclk_deep_sleep_khz = 342 clk_mgr_base->clks.dcfclk_deep_sleep_khz; 343 cmd.notify_clocks.clocks.dispclk_khz = clk_mgr_base->clks.dispclk_khz; 344 cmd.notify_clocks.clocks.dppclk_khz = clk_mgr_base->clks.dppclk_khz; 345 346 dm_execute_dmub_cmd(dc->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT); 347 } 348 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
