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Message-ID: <CAGTfZH2Oc6ADQtFiNqa+R=rDPPrKAyEUw_9DY54trr7kU34_Rw@mail.gmail.com>
Date: Mon, 9 May 2022 11:53:16 +0900
From: Chanwoo Choi <cwchoi00@...il.com>
To: Chen-Yu Tsai <wenst@...omium.org>
Cc: "Chen, Rong A" <rong.a.chen@...el.com>,
Johnson Wang <johnson.wang@...iatek.com>,
kernel test robot <lkp@...el.com>,
Chanwoo Choi <cw00.choi@...sung.com>, krzk+dt@...nel.org,
Rob Herring <robh+dt@...nel.org>,
Kyungmin Park <kyungmin.park@...sung.com>,
llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
Linux PM list <linux-pm@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
devicetree <devicetree@...r.kernel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-mediatek@...ts.infradead.org, jia-wei.chang@...iatek.com,
Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [kbuild-all] Re: [PATCH v3 2/2] PM / devfreq: mediatek: Introduce
MediaTek CCI devfreq driver
Hi Chen-Yu,
On Mon, May 9, 2022 at 10:53 AM Chen-Yu Tsai <wenst@...omium.org> wrote:
>
> On Thu, Apr 28, 2022 at 7:39 PM Chen, Rong A <rong.a.chen@...el.com> wrote:
> > On 4/27/2022 6:11 PM, Johnson Wang wrote:
> > > On Wed, 2022-04-27 at 17:25 +0800, kernel test robot wrote:
> > >> Hi Johnson,
> > >>
> > >> Thank you for the patch! Perhaps something to improve:
> > >>
> > >> [auto build test WARNING on robh/for-next]
> > >> [also build test WARNING on linus/master v5.18-rc4 next-20220427]
> > >> [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://urldefense.com/v3/__https://git-scm.com/docs/git-format-patch__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMS_s9zEZ$
> > >> ]
> > >>
> > >> url:
> > >> https://urldefense.com/v3/__https://github.com/intel-lab-lkp/linux/commits/Johnson-Wang/Introduce-MediaTek-CCI-devfreq-driver/20220425-205820__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMc1U_tqz$
> > >>
> > >> base:
> > >> https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMUzTprof$
> > >> for-next
> > >> config: hexagon-allyesconfig (
> > >> https://urldefense.com/v3/__https://download.01.org/0day-ci/archive/20220427/202204271737.oAuTwqZH-lkp@intel.com/config__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMaVRzbSL$
> > >> )
> > >> compiler: clang version 15.0.0 (
> > >> https://urldefense.com/v3/__https://github.com/llvm/llvm-project__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMRqw5IY-$
> > >> $ 1cddcfdc3c683b393df1a5c9063252eb60e52818)
> > >> reproduce (this is a W=1 build):
> > >> wget
> > >> https://urldefense.com/v3/__https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMQLiD-i9$
> > >> -O ~/bin/make.cross
> > >> chmod +x ~/bin/make.cross
> > >> #
> > >> https://urldefense.com/v3/__https://github.com/intel-lab-lkp/linux/commit/98b34c0587837b0e5b880b11a52433f8f0eee19f__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMU5yd7Y2$
> > >>
> > >> git remote add linux-review
> > >> https://urldefense.com/v3/__https://github.com/intel-lab-lkp/linux__;!!CTRNKA9wMg0ARbw!wdyoWXNLBcYM97vMuNFQXZ9BaajEp-Kmh5-xrvU2Rlmb0o-b9tRvCD0cPzbLMW4ldtnH$
> > >>
> > >> git fetch --no-tags linux-review Johnson-Wang/Introduce-
> > >> MediaTek-CCI-devfreq-driver/20220425-205820
> > >> git checkout 98b34c0587837b0e5b880b11a52433f8f0eee19f
> > >> # 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=hexagon SHELL=/bin/bash block/partitions/
> > >> drivers/devfreq/ drivers/iio/imu/ drivers/misc/lkdtm/
> > >>
> > >> If you fix the issue, kindly add following tag as appropriate
> > >> Reported-by: kernel test robot <lkp@...el.com>
> > >>
> > >> All warnings (new ones prefixed by >>):
> > >>
> > >> drivers/devfreq/mtk-cci-devfreq.c:372:16: error: no member named
> > >> 'parent_type' in 'struct devfreq_passive_data'
> > >> passive_data->parent_type = CPUFREQ_PARENT_DEV;
> > >> ~~~~~~~~~~~~ ^
> > >> drivers/devfreq/mtk-cci-devfreq.c:372:30: error: use of undeclared
> > >> identifier 'CPUFREQ_PARENT_DEV'
> > >> passive_data->parent_type = CPUFREQ_PARENT_DEV;
> > >> ^
> > >>>> drivers/devfreq/mtk-cci-devfreq.c:379:4: warning: format
> > >>>> specifies type 'int' but the argument has type 'long' [-Wformat]
> > >>
> > >> PTR_ERR(drv->devfreq));
> > >> ^~~~~~~~~~~~~~~~~~~~~
> > >> include/linux/dev_printk.h:144:65: note: expanded from macro
> > >> 'dev_err'
> > >> dev_printk_index_wrap(_dev_err, KERN_ERR, dev,
> > >> dev_fmt(fmt), ##__VA_ARGS__)
> > >> ~~~
> > >> ^~~~~~~~~~~
> > >> include/linux/dev_printk.h:110:23: note: expanded from macro
> > >> 'dev_printk_index_wrap'
> > >> _p_func(dev, fmt,
> > >> ##__VA_ARGS__); \
> > >> ~~~ ^~~~~~~~~~~
> > >> 1 warning and 2 errors generated.
> > >>
> > >>
> > >> vim +379 drivers/devfreq/mtk-cci-devfreq.c
> > >>
> > >> 255
> > >> 256 static int mtk_ccifreq_probe(struct platform_device
> > >> *pdev)
> > >> 257 {
> > >> 258 struct device *dev = &pdev->dev;
> > >> 259 struct mtk_ccifreq_drv *drv;
> > >> 260 struct devfreq_passive_data *passive_data;
> > >> 261 struct dev_pm_opp *opp;
> > >> 262 unsigned long rate, opp_volt;
> > >> 263 int ret;
> > >> 264
> > >> 265 drv = devm_kzalloc(dev, sizeof(*drv),
> > >> GFP_KERNEL);
> > >> 266 if (!drv)
> > >> 267 return -ENOMEM;
> > >> 268
> > >> 269 drv->dev = dev;
> > >> 270 drv->soc_data = (const struct
> > >> mtk_ccifreq_platform_data *)
> > >> 271 of_device_get_match_dat
> > >> a(&pdev->dev);
> > >> 272 mutex_init(&drv->reg_lock);
> > >> 273 platform_set_drvdata(pdev, drv);
> > >> 274
> > >> 275 drv->cci_clk = devm_clk_get(dev, "cci");
> > >> 276 if (IS_ERR(drv->cci_clk)) {
> > >> 277 ret = PTR_ERR(drv->cci_clk);
> > >> 278 return dev_err_probe(dev, ret,
> > >> 279 "failed to get cci
> > >> clk: %d\n", ret);
> > >> 280 }
> > >> 281
> > >> 282 drv->inter_clk = devm_clk_get(dev,
> > >> "intermediate");
> > >> 283 if (IS_ERR(drv->inter_clk)) {
> > >> 284 ret = PTR_ERR(drv->inter_clk);
> > >> 285 dev_err_probe(dev, ret,
> > >> 286 "failed to get
> > >> intermediate clk: %d\n", ret);
> > >> 287 goto out_free_resources;
> > >> 288 }
> > >> 289
> > >> 290 drv->proc_reg =
> > >> devm_regulator_get_optional(dev, "proc");
> > >> 291 if (IS_ERR(drv->proc_reg)) {
> > >> 292 ret = PTR_ERR(drv->proc_reg);
> > >> 293 dev_err_probe(dev, ret,
> > >> 294 "failed to get proc
> > >> regulator: %d\n", ret);
> > >> 295 goto out_free_resources;
> > >> 296 }
> > >> 297
> > >> 298 ret = regulator_enable(drv->proc_reg);
> > >> 299 if (ret) {
> > >> 300 dev_err(dev, "failed to enable proc
> > >> regulator\n");
> > >> 301 goto out_free_resources;
> > >> 302 }
> > >> 303
> > >> 304 drv->sram_reg = regulator_get_optional(dev,
> > >> "sram");
> > >> 305 if (IS_ERR(drv->sram_reg))
> > >> 306 drv->sram_reg = NULL;
> > >> 307 else {
> > >> 308 ret = regulator_enable(drv->sram_reg);
> > >> 309 if (ret) {
> > >> 310 dev_err(dev, "failed to enable
> > >> sram regulator\n");
> > >> 311 goto out_free_resources;
> > >> 312 }
> > >> 313 }
> > >> 314
> > >> 315 /*
> > >> 316 * We assume min voltage is 0 and tracking
> > >> target voltage using
> > >> 317 * min_volt_shift for each iteration.
> > >> 318 * The retry_max is 3 times of expeted
> > >> iteration count.
> > >> 319 */
> > >> 320 drv->vtrack_max = 3 * DIV_ROUND_UP(max(drv-
> > >>> soc_data->sram_max_volt,
> > >> 321 drv-
> > >>> soc_data->proc_max_volt),
> > >> 322 drv-
> > >>> soc_data->min_volt_shift);
> > >> 323
> > >> 324 ret = clk_prepare_enable(drv->cci_clk);
> > >> 325 if (ret)
> > >> 326 goto out_free_resources;
> > >> 327
> > >> 328 ret = clk_prepare_enable(drv->inter_clk);
> > >> 329 if (ret)
> > >> 330 goto out_disable_cci_clk;
> > >> 331
> > >> 332 ret = dev_pm_opp_of_add_table(dev);
> > >> 333 if (ret) {
> > >> 334 dev_err(dev, "failed to add opp table:
> > >> %d\n", ret);
> > >> 335 goto out_disable_inter_clk;
> > >> 336 }
> > >> 337
> > >> 338 rate = clk_get_rate(drv->inter_clk);
> > >> 339 opp = dev_pm_opp_find_freq_ceil(dev, &rate);
> > >> 340 if (IS_ERR(opp)) {
> > >> 341 ret = PTR_ERR(opp);
> > >> 342 dev_err(dev, "failed to get
> > >> intermediate opp: %d\n", ret);
> > >> 343 goto out_remove_opp_table;
> > >> 344 }
> > >> 345 drv->inter_voltage =
> > >> dev_pm_opp_get_voltage(opp);
> > >> 346 dev_pm_opp_put(opp);
> > >> 347
> > >> 348 rate = U32_MAX;
> > >> 349 opp = dev_pm_opp_find_freq_floor(drv->dev,
> > >> &rate);
> > >> 350 if (IS_ERR(opp)) {
> > >> 351 dev_err(dev, "failed to get opp\n");
> > >> 352 ret = PTR_ERR(opp);
> > >> 353 goto out_remove_opp_table;
> > >> 354 }
> > >> 355
> > >> 356 opp_volt = dev_pm_opp_get_voltage(opp);
> > >> 357 dev_pm_opp_put(opp);
> > >> 358 ret = mtk_ccifreq_set_voltage(drv, opp_volt);
> > >> 359 if (ret) {
> > >> 360 dev_err(dev, "failed to scale to
> > >> highest voltage %lu in proc_reg\n",
> > >> 361 opp_volt);
> > >> 362 goto out_remove_opp_table;
> > >> 363 }
> > >> 364
> > >> 365 passive_data = devm_kzalloc(dev, sizeof(struct
> > >> devfreq_passive_data),
> > >> 366 GFP_KERNEL);
> > >> 367 if (!passive_data) {
> > >> 368 ret = -ENOMEM;
> > >> 369 goto out_remove_opp_table;
> > >> 370 }
> > >> 371
> > >> 372 passive_data->parent_type = CPUFREQ_PARENT_DEV;
> > >> 373 drv->devfreq = devm_devfreq_add_device(dev,
> > >> &mtk_ccifreq_profile,
> > >> 374 DEVFREQ_
> > >> GOV_PASSIVE,
> > >> 375 passive_
> > >> data);
> > >> 376 if (IS_ERR(drv->devfreq)) {
> > >> 377 ret = -EPROBE_DEFER;
> > >> 378 dev_err(dev, "failed to add devfreq
> > >> device: %d\n",
> > >> > 379 PTR_ERR(drv->devfreq));
> > >> 380 goto out_remove_opp_table;
> > >> 381 }
> > >> 382
> > >> 383 drv->opp_nb.notifier_call =
> > >> mtk_ccifreq_opp_notifier;
> > >> 384 ret = dev_pm_opp_register_notifier(dev, &drv-
> > >>> opp_nb);
> > >> 385 if (ret) {
> > >> 386 dev_err(dev, "failed to register opp
> > >> notifier: %d\n", ret);
> > >> 387 goto out_remove_devfreq_device;
> > >> 388 }
> > >> 389 return 0;
> > >> 390
> > >> 391 out_remove_devfreq_device:
> > >> 392 devm_devfreq_remove_device(dev, drv->devfreq);
> > >> 393
> > >> 394 out_remove_opp_table:
> > >> 395 dev_pm_opp_of_remove_table(dev);
> > >> 396
> > >> 397 out_disable_inter_clk:
> > >> 398 clk_disable_unprepare(drv->inter_clk);
> > >> 399
> > >> 400 out_disable_cci_clk:
> > >> 401 clk_disable_unprepare(drv->cci_clk);
> > >> 402
> > >> 403 out_free_resources:
> > >> 404 if (regulator_is_enabled(drv->proc_reg))
> > >> 405 regulator_disable(drv->proc_reg);
> > >> 406 if (drv->sram_reg && regulator_is_enabled(drv-
> > >>> sram_reg))
> > >> 407 regulator_disable(drv->sram_reg);
> > >> 408
> > >> 409 if (!IS_ERR(drv->proc_reg))
> > >> 410 regulator_put(drv->proc_reg);
> > >> 411 if (!IS_ERR(drv->sram_reg))
> > >> 412 regulator_put(drv->sram_reg);
> > >> 413 if (!IS_ERR(drv->cci_clk))
> > >> 414 clk_put(drv->cci_clk);
> > >> 415 if (!IS_ERR(drv->inter_clk))
> > >> 416 clk_put(drv->inter_clk);
> > >> 417
> > >> 418 return ret;
> > >> 419 }
> > >> 420
> > >>
> > >
> > > Hi "kernel test robot",
> > >
> > > Thanks for your review.
> > >
> > > This patch is based on chanwoo/devfreq-testing[1]
> > > [1]
> > > https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git/log/?h=devfreq-testing
> >
> > Hi Johnson,
> >
> > Thanks for the feedback, we'll take a look too.
>
> I think the last patch on that branch might be broken.
You mean the patch[1]. Without this patch[1], there are no problems?
[1] https://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/linux.git/commit/?h=devfreq-testing&id=ea1011fba665b95fc28f682c9b131799a88b11ae
When you tested these patches with patchset[2] without last patch[1]
if there are no problems, please reply to patchset[2] with your Tested-by tag.
[2] https://patchwork.kernel.org/project/linux-pm/cover/20220507150145.531864-1-cw00.choi@samsung.com/
--
Best Regards,
Chanwoo Choi
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