tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 494d311a82bb06a81fa7ef4277367701a792e6ef commit: 9c3bab3c4f158bb79ebd7443ef83c32fa1a450a1 [1358/2764] ASoC: Intel: KMB: Enable TDM audio capture config: arm64-randconfig-s031-20200821 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-191-g10164920-dirty git checkout 9c3bab3c4f158bb79ebd7443ef83c32fa1a450a1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 9c3bab3c4f158bb79ebd7443ef83c32fa1a450a1 vim +517 sound/soc/intel/keembay/kmb_platform.c c5477e966728f8 Sia Jee Heng 2020-06-09 473 c5477e966728f8 Sia Jee Heng 2020-06-09 474 static int kmb_dai_hw_params(struct snd_pcm_substream *substream, c5477e966728f8 Sia Jee Heng 2020-06-09 475 struct snd_pcm_hw_params *hw_params, c5477e966728f8 Sia Jee Heng 2020-06-09 476 struct snd_soc_dai *cpu_dai) c5477e966728f8 Sia Jee Heng 2020-06-09 477 { c5477e966728f8 Sia Jee Heng 2020-06-09 478 struct kmb_i2s_info *kmb_i2s = snd_soc_dai_get_drvdata(cpu_dai); c5477e966728f8 Sia Jee Heng 2020-06-09 479 struct i2s_clk_config_data *config = &kmb_i2s->config; 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 480 u32 write_val; c5477e966728f8 Sia Jee Heng 2020-06-09 481 int ret; c5477e966728f8 Sia Jee Heng 2020-06-09 482 c5477e966728f8 Sia Jee Heng 2020-06-09 483 switch (params_format(hw_params)) { c5477e966728f8 Sia Jee Heng 2020-06-09 484 case SNDRV_PCM_FORMAT_S16_LE: c5477e966728f8 Sia Jee Heng 2020-06-09 485 config->data_width = 16; c5477e966728f8 Sia Jee Heng 2020-06-09 486 kmb_i2s->ccr = 0x00; c5477e966728f8 Sia Jee Heng 2020-06-09 487 kmb_i2s->xfer_resolution = 0x02; c5477e966728f8 Sia Jee Heng 2020-06-09 488 break; c5477e966728f8 Sia Jee Heng 2020-06-09 489 case SNDRV_PCM_FORMAT_S24_LE: c5477e966728f8 Sia Jee Heng 2020-06-09 490 config->data_width = 24; c5477e966728f8 Sia Jee Heng 2020-06-09 491 kmb_i2s->ccr = 0x08; c5477e966728f8 Sia Jee Heng 2020-06-09 492 kmb_i2s->xfer_resolution = 0x04; c5477e966728f8 Sia Jee Heng 2020-06-09 493 break; c5477e966728f8 Sia Jee Heng 2020-06-09 494 case SNDRV_PCM_FORMAT_S32_LE: c5477e966728f8 Sia Jee Heng 2020-06-09 495 config->data_width = 32; c5477e966728f8 Sia Jee Heng 2020-06-09 496 kmb_i2s->ccr = 0x10; c5477e966728f8 Sia Jee Heng 2020-06-09 497 kmb_i2s->xfer_resolution = 0x05; c5477e966728f8 Sia Jee Heng 2020-06-09 498 break; c5477e966728f8 Sia Jee Heng 2020-06-09 499 default: c5477e966728f8 Sia Jee Heng 2020-06-09 500 dev_err(kmb_i2s->dev, "kmb: unsupported PCM fmt"); c5477e966728f8 Sia Jee Heng 2020-06-09 501 return -EINVAL; c5477e966728f8 Sia Jee Heng 2020-06-09 502 } c5477e966728f8 Sia Jee Heng 2020-06-09 503 c5477e966728f8 Sia Jee Heng 2020-06-09 504 config->chan_nr = params_channels(hw_params); c5477e966728f8 Sia Jee Heng 2020-06-09 505 c5477e966728f8 Sia Jee Heng 2020-06-09 506 switch (config->chan_nr) { 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 507 case 8: 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 508 case 4: 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 509 /* 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 510 * Platform is not capable of providing clocks for 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 511 * multi channel audio 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 512 */ 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 513 if (kmb_i2s->master) 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 514 return -EINVAL; 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 515 c5477e966728f8 Sia Jee Heng 2020-06-09 516 write_val = ((config->chan_nr / 2) << TDM_CHANNEL_CONFIG_BIT) | c5477e966728f8 Sia Jee Heng 2020-06-09 @517 (config->data_width << DATA_WIDTH_CONFIG_BIT) | 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 518 !MASTER_MODE | TDM_OPERATION; c5477e966728f8 Sia Jee Heng 2020-06-09 519 c5477e966728f8 Sia Jee Heng 2020-06-09 520 writel(write_val, kmb_i2s->pss_base + I2S_GEN_CFG_0); 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 521 break; 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 522 case 2: 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 523 /* 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 524 * Platform is only capable of providing clocks need for 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 525 * 2 channel master mode 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 526 */ 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 527 if (!(kmb_i2s->master)) 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 528 return -EINVAL; c5477e966728f8 Sia Jee Heng 2020-06-09 529 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 530 write_val = ((config->chan_nr / 2) << TDM_CHANNEL_CONFIG_BIT) | 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 531 (config->data_width << DATA_WIDTH_CONFIG_BIT) | 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 532 MASTER_MODE | I2S_OPERATION; 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 533 9c3bab3c4f158b Michael Sit Wei Hong 2020-08-11 534 writel(write_val, kmb_i2s->pss_base + I2S_GEN_CFG_0); c5477e966728f8 Sia Jee Heng 2020-06-09 535 break; c5477e966728f8 Sia Jee Heng 2020-06-09 536 default: c5477e966728f8 Sia Jee Heng 2020-06-09 537 dev_dbg(kmb_i2s->dev, "channel not supported\n"); c5477e966728f8 Sia Jee Heng 2020-06-09 538 return -EINVAL; c5477e966728f8 Sia Jee Heng 2020-06-09 539 } c5477e966728f8 Sia Jee Heng 2020-06-09 540 c5477e966728f8 Sia Jee Heng 2020-06-09 541 kmb_i2s_config(kmb_i2s, substream->stream); c5477e966728f8 Sia Jee Heng 2020-06-09 542 c5477e966728f8 Sia Jee Heng 2020-06-09 543 writel(kmb_i2s->ccr, kmb_i2s->i2s_base + CCR); c5477e966728f8 Sia Jee Heng 2020-06-09 544 c5477e966728f8 Sia Jee Heng 2020-06-09 545 config->sample_rate = params_rate(hw_params); c5477e966728f8 Sia Jee Heng 2020-06-09 546 c5477e966728f8 Sia Jee Heng 2020-06-09 547 if (kmb_i2s->master) { c5477e966728f8 Sia Jee Heng 2020-06-09 548 /* Only 2 ch supported in Master mode */ c5477e966728f8 Sia Jee Heng 2020-06-09 549 u32 bitclk = config->sample_rate * config->data_width * 2; c5477e966728f8 Sia Jee Heng 2020-06-09 550 c5477e966728f8 Sia Jee Heng 2020-06-09 551 ret = clk_set_rate(kmb_i2s->clk_i2s, bitclk); c5477e966728f8 Sia Jee Heng 2020-06-09 552 if (ret) { c5477e966728f8 Sia Jee Heng 2020-06-09 553 dev_err(kmb_i2s->dev, c5477e966728f8 Sia Jee Heng 2020-06-09 554 "Can't set I2S clock rate: %d\n", ret); c5477e966728f8 Sia Jee Heng 2020-06-09 555 return ret; c5477e966728f8 Sia Jee Heng 2020-06-09 556 } c5477e966728f8 Sia Jee Heng 2020-06-09 557 } c5477e966728f8 Sia Jee Heng 2020-06-09 558 c5477e966728f8 Sia Jee Heng 2020-06-09 559 return 0; c5477e966728f8 Sia Jee Heng 2020-06-09 560 } c5477e966728f8 Sia Jee Heng 2020-06-09 561 :::::: The code at line 517 was first introduced by commit :::::: c5477e966728f8e9d1434543d4ee677d515e1078 ASoC: Intel: Add KeemBay platform driver :::::: TO: Sia Jee Heng <jee.heng.sia(a)intel.com&gt; :::::: CC: Mark Brown <broonie(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org