Re: [PATCH 18/22] drm/vc4: Use simple encoder

From: kbuild test robot <lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Thomas Zimmermann <tzimmermann-l3A5Bk7waGM@public.gmane.org>
Cc: kbuild-all-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
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Subject: Re: [PATCH 18/22] drm/vc4: Use simple encoder
Date: Fri, 6 Mar 2020 21:54:37 +0800	[thread overview]
Message-ID: <202003062111.Q1W7Y5ZF%lkp@intel.com> (raw)
In-Reply-To: <20200305155950.2705-19-tzimmermann-l3A5Bk7waGM@public.gmane.org>

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Hi Thomas,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20200305]
[cannot apply to rockchip/for-next shawnguo/for-next sunxi/sunxi/for-next tegra/for-next linus/master v5.6-rc4 v5.6-rc3 v5.6-rc2 v5.6-rc4]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/drm-Convert-drivers-to-drm_simple_encoder_init/20200306-045931
base:    47466dcf84ee66a973ea7d2fca7e582fe9328932
config: arm64-defconfig (attached as .config)
compiler: clang version 11.0.0 (git://gitmirror/llvm_project a0cd413426479abb207381bdbab862f3dfb3ce7d)
reproduce:
        # FIXME the reproduce steps for clang is not ready yet

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

All errors (new ones prefixed by >>):

>> drivers/gpu//drm/vc4/vc4_dpi.c:309:2: error: implicit declaration of function 'drm_simple_encoder_init' [-Werror,-Wimplicit-function-declaration]
           drm_simple_encoder_init(drm, dpi->encoder, DRM_MODE_ENCODER_DPI);
           ^
   drivers/gpu//drm/vc4/vc4_dpi.c:309:2: note: did you mean 'drm_encoder_init'?
   include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here
   int drm_encoder_init(struct drm_device *dev,
       ^
   1 error generated.
--
>> drivers/gpu//drm/vc4/vc4_dsi.c:1610:2: error: implicit declaration of function 'drm_simple_encoder_init' [-Werror,-Wimplicit-function-declaration]
           drm_simple_encoder_init(drm, dsi->encoder, DRM_MODE_ENCODER_DSI);
           ^
   drivers/gpu//drm/vc4/vc4_dsi.c:1610:2: note: did you mean 'drm_encoder_init'?
   include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here
   int drm_encoder_init(struct drm_device *dev,
       ^
   1 error generated.
--
>> drivers/gpu//drm/vc4/vc4_hdmi.c:1389:2: error: implicit declaration of function 'drm_simple_encoder_init' [-Werror,-Wimplicit-function-declaration]
           drm_simple_encoder_init(drm, hdmi->encoder, DRM_MODE_ENCODER_TMDS);
           ^
   drivers/gpu//drm/vc4/vc4_hdmi.c:1389:2: note: did you mean 'drm_encoder_init'?
   include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here
   int drm_encoder_init(struct drm_device *dev,
       ^
   1 error generated.
--
>> drivers/gpu//drm/vc4/vc4_vec.c:566:2: error: implicit declaration of function 'drm_simple_encoder_init' [-Werror,-Wimplicit-function-declaration]
           drm_simple_encoder_init(drm, vec->encoder, DRM_MODE_ENCODER_TVDAC);
           ^
   drivers/gpu//drm/vc4/vc4_vec.c:566:2: note: did you mean 'drm_encoder_init'?
   include/drm/drm_encoder.h:189:5: note: 'drm_encoder_init' declared here
   int drm_encoder_init(struct drm_device *dev,
       ^
   1 error generated.

vim +/drm_simple_encoder_init +309 drivers/gpu//drm/vc4/vc4_dpi.c

   254	
   255	static int vc4_dpi_bind(struct device *dev, struct device *master, void *data)
   256	{
   257		struct platform_device *pdev = to_platform_device(dev);
   258		struct drm_device *drm = dev_get_drvdata(master);
   259		struct vc4_dev *vc4 = to_vc4_dev(drm);
   260		struct vc4_dpi *dpi;
   261		struct vc4_dpi_encoder *vc4_dpi_encoder;
   262		int ret;
   263	
   264		dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
   265		if (!dpi)
   266			return -ENOMEM;
   267	
   268		vc4_dpi_encoder = devm_kzalloc(dev, sizeof(*vc4_dpi_encoder),
   269					       GFP_KERNEL);
   270		if (!vc4_dpi_encoder)
   271			return -ENOMEM;
   272		vc4_dpi_encoder->base.type = VC4_ENCODER_TYPE_DPI;
   273		vc4_dpi_encoder->dpi = dpi;
   274		dpi->encoder = &vc4_dpi_encoder->base.base;
   275	
   276		dpi->pdev = pdev;
   277		dpi->regs = vc4_ioremap_regs(pdev, 0);
   278		if (IS_ERR(dpi->regs))
   279			return PTR_ERR(dpi->regs);
   280		dpi->regset.base = dpi->regs;
   281		dpi->regset.regs = dpi_regs;
   282		dpi->regset.nregs = ARRAY_SIZE(dpi_regs);
   283	
   284		if (DPI_READ(DPI_ID) != DPI_ID_VALUE) {
   285			dev_err(dev, "Port returned 0x%08x for ID instead of 0x%08x\n",
   286				DPI_READ(DPI_ID), DPI_ID_VALUE);
   287			return -ENODEV;
   288		}
   289	
   290		dpi->core_clock = devm_clk_get(dev, "core");
   291		if (IS_ERR(dpi->core_clock)) {
   292			ret = PTR_ERR(dpi->core_clock);
   293			if (ret != -EPROBE_DEFER)
   294				DRM_ERROR("Failed to get core clock: %d\n", ret);
   295			return ret;
   296		}
   297		dpi->pixel_clock = devm_clk_get(dev, "pixel");
   298		if (IS_ERR(dpi->pixel_clock)) {
   299			ret = PTR_ERR(dpi->pixel_clock);
   300			if (ret != -EPROBE_DEFER)
   301				DRM_ERROR("Failed to get pixel clock: %d\n", ret);
   302			return ret;
   303		}
   304	
   305		ret = clk_prepare_enable(dpi->core_clock);
   306		if (ret)
   307			DRM_ERROR("Failed to turn on core clock: %d\n", ret);
   308	
 > 309		drm_simple_encoder_init(drm, dpi->encoder, DRM_MODE_ENCODER_DPI);
   310		drm_encoder_helper_add(dpi->encoder, &vc4_dpi_encoder_helper_funcs);
   311	
   312		ret = vc4_dpi_init_bridge(dpi);
   313		if (ret)
   314			goto err_destroy_encoder;
   315	
   316		dev_set_drvdata(dev, dpi);
   317	
   318		vc4->dpi = dpi;
   319	
   320		vc4_debugfs_add_regset32(drm, "dpi_regs", &dpi->regset);
   321	
   322		return 0;
   323	
   324	err_destroy_encoder:
   325		drm_encoder_cleanup(dpi->encoder);
   326		clk_disable_unprepare(dpi->core_clock);
   327		return ret;
   328	}
   329	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org

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