Re: [Intel-gfx] [PATCH 01/29] drm/i915/tc: Group the TC PHY setup/query functions per platform

[kernel test robot <lkp@intel.com>]

Hi Imre,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-tip/drm-tip]

url:    https://github.com/intel-lab-lkp/linux/commits/Imre-Deak/drm-i915-tc-Group-the-TC-PHY-setup-query-functions-per-platform/20230323-222328
base:   git://anongit.freedesktop.org/drm/drm-tip drm-tip
patch link:    https://lore.kernel.org/r/20230323142035.1432621-2-imre.deak%40intel.com
patch subject: [Intel-gfx] [PATCH 01/29] drm/i915/tc: Group the TC PHY setup/query functions per platform
config: i386-randconfig-a004 (https://download.01.org/0day-ci/archive/20230324/202303240020.UQr6flaJ-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/intel-lab-lkp/linux/commit/7b85ed1627f7c16b7ff080b604d35d729c70313f
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Imre-Deak/drm-i915-tc-Group-the-TC-PHY-setup-query-functions-per-platform/20230323-222328
        git checkout 7b85ed1627f7c16b7ff080b604d35d729c70313f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303240020.UQr6flaJ-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/display/intel_tc.c:264: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * ICL TC PHY handlers
   drivers/gpu/drm/i915/display/intel_tc.c:457: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * ADLP TC PHY handlers
   drivers/gpu/drm/i915/display/intel_tc.c:535: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Generic TC PHY handlers
   drivers/gpu/drm/i915/display/intel_tc.c:1026: warning: Function parameter or member 'work' not described in 'intel_tc_port_disconnect_phy_work'
   drivers/gpu/drm/i915/display/intel_tc.c:1026: warning: Excess function parameter 'dig_port' description in 'intel_tc_port_disconnect_phy_work'


vim +264 drivers/gpu/drm/i915/display/intel_tc.c

   262	
   263	/**
 > 264	 * ICL TC PHY handlers
   265	 * -------------------
   266	 */
   267	static u32 icl_tc_port_live_status_mask(struct intel_digital_port *dig_port)
   268	{
   269		struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
   270		u32 isr_bit = i915->display.hotplug.pch_hpd[dig_port->base.hpd_pin];
   271		u32 mask = 0;
   272		u32 val;
   273	
   274		val = intel_de_read(i915, PORT_TX_DFLEXDPSP(dig_port->tc_phy_fia));
   275	
   276		if (val == 0xffffffff) {
   277			drm_dbg_kms(&i915->drm,
   278				    "Port %s: PHY in TCCOLD, nothing connected\n",
   279				    dig_port->tc_port_name);
   280			return mask;
   281		}
   282	
   283		if (val & TC_LIVE_STATE_TBT(dig_port->tc_phy_fia_idx))
   284			mask |= BIT(TC_PORT_TBT_ALT);
   285		if (val & TC_LIVE_STATE_TC(dig_port->tc_phy_fia_idx))
   286			mask |= BIT(TC_PORT_DP_ALT);
   287	
   288		if (intel_de_read(i915, SDEISR) & isr_bit)
   289			mask |= BIT(TC_PORT_LEGACY);
   290	
   291		/* The sink can be connected only in a single mode. */
   292		if (!drm_WARN_ON_ONCE(&i915->drm, hweight32(mask) > 1))
   293			tc_port_fixup_legacy_flag(dig_port, mask);
   294	
   295		return mask;
   296	}
   297	

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