linux-kernel - [superna9999:amlogic/v5.20/g12-dsi-wip 9/12] drivers/gpu/drm/meson/meson_venc.c:1595:10: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations

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Date:   Sat, 18 Jun 2022 00:26:00 +0800
From:   kernel test robot <lkp@...el.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [superna9999:amlogic/v5.20/g12-dsi-wip 9/12]
 drivers/gpu/drm/meson/meson_venc.c:1595:10: error: call to undeclared
 function 'FIELD_PREP'; ISO C99 and later do not support implicit function
 declarations

tree:   https://github.com/superna9999/linux amlogic/v5.20/g12-dsi-wip
head:   0e725ea0a5ab9f70fc54c2e76475b8d594b90c4e
commit: 927953782b0c6c12a73654c526a12678e348f817 [9/12] drm/meson: venc: add ENCL encoder setup for MIPI-DSI output
config: arm-randconfig-r014-20220617 (https://download.01.org/0day-ci/archive/20220618/202206180004.GHjxyBau-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d764aa7fc6b9cc3fbe960019018f5f9e941eb0a6)
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
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/superna9999/linux/commit/927953782b0c6c12a73654c526a12678e348f817
        git remote add superna9999 https://github.com/superna9999/linux
        git fetch --no-tags superna9999 amlogic/v5.20/g12-dsi-wip
        git checkout 927953782b0c6c12a73654c526a12678e348f817
        # 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=arm SHELL=/bin/bash drivers/gpu/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/meson/meson_venc.c:1595:10: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                          FIELD_PREP(L_GAMMA_ADDR_PORT_ADDR, 0),
                          ^
   1 error generated.


vim +/FIELD_PREP +1595 drivers/gpu/drm/meson/meson_venc.c

  1579	
  1580	static void meson_encl_set_gamma_table(struct meson_drm *priv, u16 *data,
  1581					       u32 rgb_mask)
  1582	{
  1583		int i, ret;
  1584		u32 reg;
  1585	
  1586		writel_bits_relaxed(L_GAMMA_CNTL_PORT_EN, 0,
  1587				    priv->io_base + _REG(L_GAMMA_CNTL_PORT));
  1588	
  1589		ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
  1590						 reg, reg & L_GAMMA_CNTL_PORT_ADR_RDY, 10, 10000);
  1591		if (ret)
  1592			pr_warn("%s: GAMMA ADR_RDY timeout\n", __func__);
  1593	
  1594		writel_relaxed(L_GAMMA_ADDR_PORT_AUTO_INC | rgb_mask |
> 1595			       FIELD_PREP(L_GAMMA_ADDR_PORT_ADDR, 0),
  1596			       priv->io_base + _REG(L_GAMMA_ADDR_PORT));
  1597	
  1598		for (i = 0; i < 256; i++) {
  1599			ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
  1600							 reg, reg & L_GAMMA_CNTL_PORT_WR_RDY,
  1601							 10, 10000);
  1602			if (ret)
  1603				pr_warn_once("%s: GAMMA WR_RDY timeout\n", __func__);
  1604	
  1605			writel_relaxed(data[i], priv->io_base + _REG(L_GAMMA_DATA_PORT));
  1606		}
  1607	
  1608		ret = readl_relaxed_poll_timeout(priv->io_base + _REG(L_GAMMA_CNTL_PORT),
  1609						 reg, reg & L_GAMMA_CNTL_PORT_ADR_RDY, 10, 10000);
  1610		if (ret)
  1611			pr_warn("%s: GAMMA ADR_RDY timeout\n", __func__);
  1612	
  1613		writel_relaxed(L_GAMMA_ADDR_PORT_AUTO_INC | rgb_mask |
  1614			       FIELD_PREP(L_GAMMA_ADDR_PORT_ADDR, 0x23),
  1615			       priv->io_base + _REG(L_GAMMA_ADDR_PORT));
  1616	}
  1617	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp