Hi Xin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on linux/master linus/master v5.12-rc3 next-20210318] [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] url: https://github.com/0day-ci/linux/commits/Xin-Ji/Add-MIPI-rx-DPI-support/20210319-104013 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: s390-allyesconfig (attached as .config) compiler: s390-linux-gcc (GCC) 9.3.0 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 # https://github.com/0day-ci/linux/commit/ea2fa662ee036a3e1e2e25233653d7227b510b48 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Xin-Ji/Add-MIPI-rx-DPI-support/20210319-104013 git checkout ea2fa662ee036a3e1e2e25233653d7227b510b48 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/bridge/analogix/anx7625.c:1588:5: warning: no previous prototype for 'anx7625_audio_hw_params' [-Wmissing-prototypes] 1588 | int anx7625_audio_hw_params(struct device *dev, void *data, | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/anx7625_audio_hw_params +1588 drivers/gpu/drm/bridge/analogix/anx7625.c 1587 > 1588 int anx7625_audio_hw_params(struct device *dev, void *data, 1589 struct hdmi_codec_daifmt *fmt, 1590 struct hdmi_codec_params *params) 1591 { 1592 struct anx7625_data *ctx = dev_get_drvdata(dev); 1593 int wl, ch, rate; 1594 int ret = 0; 1595 1596 if (fmt->fmt != HDMI_DSP_A) { 1597 DRM_DEV_ERROR(dev, "only supports DSP_A\n"); 1598 return -EINVAL; 1599 } 1600 1601 DRM_DEV_DEBUG_DRIVER(dev, "setting %d Hz, %d bit, %d channels\n", 1602 params->sample_rate, params->sample_width, 1603 params->cea.channels); 1604 1605 ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, 1606 AUDIO_CHANNEL_STATUS_6, 1607 ~I2S_SLAVE_MODE, 1608 TDM_SLAVE_MODE); 1609 1610 /* Word length */ 1611 switch (params->sample_width) { 1612 case 16: 1613 wl = AUDIO_W_LEN_16_20MAX; 1614 break; 1615 case 18: 1616 wl = AUDIO_W_LEN_18_20MAX; 1617 break; 1618 case 20: 1619 wl = AUDIO_W_LEN_20_20MAX; 1620 break; 1621 case 24: 1622 wl = AUDIO_W_LEN_24_24MAX; 1623 break; 1624 default: 1625 DRM_DEV_DEBUG_DRIVER(dev, "wordlength: %d bit not support", 1626 params->sample_width); 1627 return -EINVAL; 1628 } 1629 ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, 1630 AUDIO_CHANNEL_STATUS_5, 1631 0xf0, wl); 1632 1633 /* Channel num */ 1634 switch (params->cea.channels) { 1635 case 2: 1636 ch = I2S_CH_2; 1637 break; 1638 case 4: 1639 ch = TDM_CH_4; 1640 break; 1641 case 6: 1642 ch = TDM_CH_6; 1643 break; 1644 case 8: 1645 ch = TDM_CH_8; 1646 break; 1647 default: 1648 DRM_DEV_DEBUG_DRIVER(dev, "channel number: %d not support", 1649 params->cea.channels); 1650 return -EINVAL; 1651 } 1652 ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, 1653 AUDIO_CHANNEL_STATUS_6, 0x1f, ch << 5); 1654 if (ch > I2S_CH_2) 1655 ret |= anx7625_write_or(ctx, ctx->i2c.tx_p2_client, 1656 AUDIO_CHANNEL_STATUS_6, AUDIO_LAYOUT); 1657 else 1658 ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, 1659 AUDIO_CHANNEL_STATUS_6, ~AUDIO_LAYOUT); 1660 1661 /* FS */ 1662 switch (params->sample_rate) { 1663 case 32000: 1664 rate = AUDIO_FS_32K; 1665 break; 1666 case 44100: 1667 rate = AUDIO_FS_441K; 1668 break; 1669 case 48000: 1670 rate = AUDIO_FS_48K; 1671 break; 1672 case 88200: 1673 rate = AUDIO_FS_882K; 1674 break; 1675 case 96000: 1676 rate = AUDIO_FS_96K; 1677 break; 1678 case 176400: 1679 rate = AUDIO_FS_1764K; 1680 break; 1681 case 192000: 1682 rate = AUDIO_FS_192K; 1683 break; 1684 default: 1685 DRM_DEV_DEBUG_DRIVER(dev, "sample rate: %d not support", 1686 params->sample_rate); 1687 return -EINVAL; 1688 } 1689 ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, 1690 AUDIO_CHANNEL_STATUS_4, 1691 0xf0, rate); 1692 ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, 1693 AP_AV_STATUS, AP_AUDIO_CHG); 1694 if (ret < 0) { 1695 DRM_DEV_ERROR(dev, "IO error : config audio.\n"); 1696 return -EIO; 1697 } 1698 1699 return 0; 1700 } 1701 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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