Re: [PATCH 05/10] drm: xlnx: Xilinx DRM KMS driver

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On Thu, Jan 04, 2018 at 06:05:54PM -0800, Hyun Kwon wrote:
> Xilinx has various platforms for display, where users can create
> using multiple IPs in the programmable FPGA fabric, or where
> some hardened piepline is available on the chip. Furthermore,
> hardened pipeline can also interact with soft logics in FPGA.
> 
> The Xilinx DRM KMS is a softwrae layer to glue subdevice drivers
> with DRM core and integrate multiple subdevice drivers together.
> 
> Signed-off-by: Hyun Kwon <hyun.kwon@xxxxxxxxxx>
> ---
>  MAINTAINERS                      |   8 +
>  drivers/gpu/drm/Kconfig          |   2 +
>  drivers/gpu/drm/Makefile         |   1 +
>  drivers/gpu/drm/xlnx/Kconfig     |  12 ++
>  drivers/gpu/drm/xlnx/Makefile    |   2 +
>  drivers/gpu/drm/xlnx/xlnx_crtc.c |   1 +
>  drivers/gpu/drm/xlnx/xlnx_drv.c  | 436 +++++++++++++++++++++++++++++++++++++++
>  drivers/gpu/drm/xlnx/xlnx_drv.h  |  22 ++
>  drivers/gpu/drm/xlnx/xlnx_fb.c   |   1 +
>  drivers/gpu/drm/xlnx/xlnx_gem.c  |   1 +
>  10 files changed, 486 insertions(+)
>  create mode 100644 drivers/gpu/drm/xlnx/Kconfig
>  create mode 100644 drivers/gpu/drm/xlnx/Makefile
>  create mode 100644 drivers/gpu/drm/xlnx/xlnx_drv.c
>  create mode 100644 drivers/gpu/drm/xlnx/xlnx_drv.h
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index d4b1635..101a3e6 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -4785,6 +4785,14 @@ F:	drivers/gpu/drm/etnaviv/
>  F:	include/uapi/drm/etnaviv_drm.h
>  F:	Documentation/devicetree/bindings/display/etnaviv/
>  
> +DRM DRIVERS FOR XILINX
> +M:	Hyun Kwon <hyun.kwon@xxxxxxxxxx>
> +L:	dri-devel@xxxxxxxxxxxxxxxxxxxxx
> +S:	Maintained
> +F:	drivers/gpu/drm/xlnx/
> +F:	Documentation/devicetree/bindings/display/xlnx/
> +T:	git git://anongit.freedesktop.org/drm/drm-misc
> +
>  DRM DRIVERS FOR ZTE ZX
>  M:	Shawn Guo <shawnguo@xxxxxxxxxx>
>  L:	dri-devel@xxxxxxxxxxxxxxxxxxxxx
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 0bc3744..82b7fc3 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -293,6 +293,8 @@ source "drivers/gpu/drm/pl111/Kconfig"
>  
>  source "drivers/gpu/drm/tve200/Kconfig"
>  
> +source "drivers/gpu/drm/xlnx/Kconfig"
> +
>  # Keep legacy drivers last
>  
>  menuconfig DRM_LEGACY
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index dd5ae67..72ee1a1 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -103,3 +103,4 @@ obj-$(CONFIG_DRM_TINYDRM) += tinydrm/
>  obj-$(CONFIG_DRM_PL111) += pl111/
>  obj-$(CONFIG_DRM_TVE200) += tve200/
>  obj-$(CONFIG_DRM_SCHED)	+= scheduler/
> +obj-$(CONFIG_DRM_XLNX)	+= xlnx/
> diff --git a/drivers/gpu/drm/xlnx/Kconfig b/drivers/gpu/drm/xlnx/Kconfig
> new file mode 100644
> index 0000000..19fd7cd
> --- /dev/null
> +++ b/drivers/gpu/drm/xlnx/Kconfig
> @@ -0,0 +1,12 @@
> +config DRM_XLNX
> +	tristate "Xilinx DRM KMS Driver"
> +	depends on DRM && OF
> +	select DRM_KMS_HELPER
> +	select DRM_KMS_CMA_HELPER
> +	select DRM_GEM_CMA_HELPER
> +	help
> +	  Xilinx DRM KMS driver. Choose this option if you have
> +	  a Xilinx SoCs with hardened display pipeline or soft
> +	  display pipeline using Xilinx IPs in FPGA. This module
> +	  provides the kernel mode setting functionalities
> +	  for Xilinx display drivers.
> diff --git a/drivers/gpu/drm/xlnx/Makefile b/drivers/gpu/drm/xlnx/Makefile
> new file mode 100644
> index 0000000..c60a281
> --- /dev/null
> +++ b/drivers/gpu/drm/xlnx/Makefile
> @@ -0,0 +1,2 @@
> +xlnx_drm-objs += xlnx_crtc.o xlnx_drv.o xlnx_fb.o xlnx_gem.o
> +obj-$(CONFIG_DRM_XLNX) += xlnx_drm.o
> diff --git a/drivers/gpu/drm/xlnx/xlnx_crtc.c b/drivers/gpu/drm/xlnx/xlnx_crtc.c
> index 57ee939..8387e1e 100644
> --- a/drivers/gpu/drm/xlnx/xlnx_crtc.c
> +++ b/drivers/gpu/drm/xlnx/xlnx_crtc.c
> @@ -13,6 +13,7 @@
>  #include <linux/list.h>
>  
>  #include "xlnx_crtc.h"
> +#include "xlnx_drv.h"
>  
>  /*
>   * Overview
> diff --git a/drivers/gpu/drm/xlnx/xlnx_drv.c b/drivers/gpu/drm/xlnx/xlnx_drv.c
> new file mode 100644
> index 0000000..273420b
> --- /dev/null
> +++ b/drivers/gpu/drm/xlnx/xlnx_drv.c
> @@ -0,0 +1,436 @@
> +/*
> + * Xilinx DRM KMS Driver
> + *
> + *  Copyright (C) 2013 - 2018 Xilinx, Inc.
> + *
> + *  Author: Hyun Woo Kwon <hyun.kwon@xxxxxxxxxx>
> + *
> + * SPDX-License-Identifier: GPL-2.0
> + */
> +
> +#include <drm/drmP.h>
> +#include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_crtc_helper.h>
> +#include <drm/drm_gem_cma_helper.h>
> +#include <drm/drm_of.h>
> +
> +#include <linux/component.h>
> +#include <linux/device.h>
> +#include <linux/dma-buf.h>
> +#include <linux/module.h>
> +#include <linux/of_graph.h>
> +#include <linux/platform_device.h>
> +#include <linux/reservation.h>
> +
> +#include "xlnx_crtc.h"
> +#include "xlnx_fb.h"
> +#include "xlnx_gem.h"
> +
> +#define DRIVER_NAME	"xlnx"
> +#define DRIVER_DESC	"Xilinx DRM KMS Driver"
> +#define DRIVER_DATE	"20130509"
> +#define DRIVER_MAJOR	1
> +#define DRIVER_MINOR	0
> +
> +static uint xlnx_fbdev_vres = 2;
> +module_param_named(fbdev_vres, xlnx_fbdev_vres, uint, 0444);
> +MODULE_PARM_DESC(fbdev_vres,
> +		 "fbdev virtual resolution multiplier for fb (default: 2)");
> +
> +/**
> + * struct xlnx_drm - Xilinx DRM private data
> + * @drm: DRM core
> + * @crtc: Xilinx DRM CRTC helper
> + * @fb: DRM fb helper
> + * @pdev: platform device
> + * @suspend_state: atomic state for suspend / resume
> + */
> +struct xlnx_drm {
> +	struct drm_device *drm;
> +	struct xlnx_crtc_helper *crtc;
> +	struct drm_fb_helper *fb;
> +	struct platform_device *pdev;
> +	struct drm_atomic_state *suspend_state;
> +};
> +
> +/**
> + * xlnx_get_crtc_helper - Return the crtc helper instance
> + * @drm: DRM device
> + *
> + * Return: the crtc helper instance
> + */
> +struct xlnx_crtc_helper *xlnx_get_crtc_helper(struct drm_device *drm)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +
> +	return xlnx_drm->crtc;
> +}
> +
> +/**
> + * xlnx_get_align - Return the align requirement through CRTC helper
> + * @drm: DRM device
> + *
> + * Return: the alignment requirement
> + */
> +unsigned int xlnx_get_align(struct drm_device *drm)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +
> +	return xlnx_crtc_helper_get_align(xlnx_drm->crtc);
> +}
> +
> +/**
> + * xlnx_get_format - Return the current format of CRTC
> + * @drm: DRM device
> + *
> + * Return: the current CRTC format
> + */
> +uint32_t xlnx_get_format(struct drm_device *drm)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +
> +	return xlnx_crtc_helper_get_format(xlnx_drm->crtc);
> +}
> +
> +static void xlnx_output_poll_changed(struct drm_device *drm)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +
> +	xlnx_fb_hotplug_event(xlnx_drm->fb);
> +}
> +
> +static const struct drm_mode_config_funcs xlnx_mode_config_funcs = {
> +	.fb_create		= xlnx_fb_create,
> +	.output_poll_changed	= xlnx_output_poll_changed,
> +	.atomic_check		= drm_atomic_helper_check,
> +	.atomic_commit		= drm_atomic_helper_commit,
> +};
> +
> +static struct drm_mode_config_helper_funcs xlnx_mode_config_helper_funcs = {
> +	.atomic_commit_tail = drm_atomic_helper_commit_tail,

Hm, I thought this was optional and it should be the default commit_tail
callback. Please remove (and if that doesn't work, pls type a core patch
to make it the default).

> +};
> +
> +static int xlnx_enable_vblank(struct drm_device *drm, unsigned int crtc)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +
> +	return xlnx_crtc_helper_enable_vblank(xlnx_drm->crtc, crtc);
> +}
> +
> +static void xlnx_disable_vblank(struct drm_device *drm, unsigned int crtc)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +
> +	xlnx_crtc_helper_disable_vblank(xlnx_drm->crtc, crtc);
> +}

This is a bit backwards since you introduce the crtc helper only in a
later patch. Good reason to move the vblank stuff in there, and maybe even
fold the crtc helpers into the main kms patch :-)
-Daniel

> +
> +static void xlnx_mode_config_init(struct drm_device *drm)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +	struct xlnx_crtc_helper *crtc = xlnx_drm->crtc;
> +
> +	drm->mode_config.min_width = 0;
> +	drm->mode_config.min_height = 0;
> +	drm->mode_config.max_width = xlnx_crtc_helper_get_max_width(crtc);
> +	drm->mode_config.max_height = xlnx_crtc_helper_get_max_height(crtc);
> +}
> +
> +static void xlnx_lastclose(struct drm_device *drm)
> +{
> +	struct xlnx_drm *xlnx_drm = drm->dev_private;
> +
> +	xlnx_fb_restore_mode(xlnx_drm->fb);
> +}
> +
> +static const struct file_operations xlnx_fops = {
> +	.owner		= THIS_MODULE,
> +	.open		= drm_open,
> +	.release	= drm_release,
> +	.unlocked_ioctl	= drm_ioctl,
> +	.mmap		= drm_gem_cma_mmap,
> +	.poll		= drm_poll,
> +	.read		= drm_read,
> +#ifdef CONFIG_COMPAT
> +	.compat_ioctl	= drm_compat_ioctl,
> +#endif
> +	.llseek		= noop_llseek,
> +};
> +
> +static struct drm_driver xlnx_drm_driver = {
> +	.driver_features		= DRIVER_MODESET | DRIVER_GEM |
> +					  DRIVER_ATOMIC | DRIVER_PRIME,
> +	.lastclose			= xlnx_lastclose,
> +
> +	.enable_vblank			= xlnx_enable_vblank,
> +	.disable_vblank			= xlnx_disable_vblank,

Please use the new callbacks in drm_crtc_ops instead, these here are
deprecated.

> +
> +	.prime_handle_to_fd		= drm_gem_prime_handle_to_fd,
> +	.prime_fd_to_handle		= drm_gem_prime_fd_to_handle,
> +	.gem_prime_export		= drm_gem_prime_export,
> +	.gem_prime_import		= drm_gem_prime_import,
> +	.gem_prime_get_sg_table		= drm_gem_cma_prime_get_sg_table,
> +	.gem_prime_import_sg_table	= drm_gem_cma_prime_import_sg_table,
> +	.gem_prime_vmap			= drm_gem_cma_prime_vmap,
> +	.gem_prime_vunmap		= drm_gem_cma_prime_vunmap,
> +	.gem_prime_mmap			= drm_gem_cma_prime_mmap,
> +	.gem_free_object		= drm_gem_cma_free_object,
> +	.gem_vm_ops			= &drm_gem_cma_vm_ops,
> +	.dumb_create			= xlnx_gem_cma_dumb_create,
> +	.dumb_destroy			= drm_gem_dumb_destroy,
> +
> +	.fops				= &xlnx_fops,
> +
> +	.name				= DRIVER_NAME,
> +	.desc				= DRIVER_DESC,
> +	.date				= DRIVER_DATE,
> +	.major				= DRIVER_MAJOR,
> +	.minor				= DRIVER_MINOR,
> +};
> +
> +static int xlnx_bind(struct device *dev)
> +{
> +	struct xlnx_drm *xlnx_drm;
> +	struct drm_device *drm;
> +	const struct drm_format_info *info;
> +	struct platform_device *pdev = to_platform_device(dev);
> +	int ret;
> +	u32 format;
> +
> +	drm = drm_dev_alloc(&xlnx_drm_driver, &pdev->dev);
> +	if (IS_ERR(drm))
> +		return PTR_ERR(drm);
> +
> +	xlnx_drm = devm_kzalloc(drm->dev, sizeof(*xlnx_drm), GFP_KERNEL);
> +	if (!xlnx_drm) {
> +		ret = -ENOMEM;
> +		goto err_drm;
> +	}
> +
> +	drm_mode_config_init(drm);
> +	drm->mode_config.funcs = &xlnx_mode_config_funcs;
> +	drm->mode_config.helper_private = &xlnx_mode_config_helper_funcs;
> +
> +	ret = drm_vblank_init(drm, 1);
> +	if (ret) {
> +		dev_err(&pdev->dev, "failed to initialize vblank\n");
> +		goto err_xlnx_drm;
> +	}
> +
> +	drm->irq_enabled = 1;
> +	drm->dev_private = xlnx_drm;
> +	xlnx_drm->drm = drm;
> +	drm_kms_helper_poll_init(drm);
> +	platform_set_drvdata(pdev, xlnx_drm);
> +
> +	xlnx_drm->crtc = xlnx_crtc_helper_init(drm);
> +	if (IS_ERR(xlnx_drm->crtc)) {
> +		ret = PTR_ERR(xlnx_drm->crtc);
> +		goto err_xlnx_drm;
> +	}
> +
> +	ret = component_bind_all(drm->dev, drm);
> +	if (ret)
> +		goto err_crtc;
> +
> +	xlnx_mode_config_init(drm);
> +	drm_mode_config_reset(drm);
> +	dma_set_mask(drm->dev, xlnx_crtc_helper_get_dma_mask(xlnx_drm->crtc));
> +
> +	format = xlnx_crtc_helper_get_format(xlnx_drm->crtc);
> +	info = drm_format_info(format);
> +	if (info && info->depth && info->cpp[0]) {
> +		unsigned int align;
> +
> +		align = xlnx_crtc_helper_get_align(xlnx_drm->crtc);
> +		xlnx_drm->fb = xlnx_fb_init(drm, info->cpp[0] * 8, 1, align,
> +					    xlnx_fbdev_vres);
> +		if (IS_ERR(xlnx_drm->fb))
> +			dev_err(&pdev->dev,
> +				"failed to initialize drm fb\n");
> +	} else {
> +		/* fbdev emulation is optional */
> +		dev_info(&pdev->dev, "fbdev is not initialized\n");
> +	}
> +
> +	ret = drm_dev_register(drm, 0);
> +	if (ret < 0)
> +		goto err_fb;
> +
> +	return 0;
> +
> +err_fb:
> +	if (xlnx_drm->fb)
> +		xlnx_fb_fini(xlnx_drm->fb);
> +	component_unbind_all(drm->dev, drm);
> +err_crtc:
> +	xlnx_crtc_helper_fini(drm, xlnx_drm->crtc);
> +err_xlnx_drm:
> +	drm_mode_config_cleanup(drm);
> +err_drm:
> +	drm_dev_unref(drm);
> +	return ret;
> +}
> +
> +static void xlnx_unbind(struct device *dev)
> +{
> +	struct xlnx_drm *xlnx_drm = dev_get_drvdata(dev);
> +	struct drm_device *drm = xlnx_drm->drm;
> +
> +	drm_dev_unregister(drm);
> +	if (xlnx_drm->fb)
> +		xlnx_fb_fini(xlnx_drm->fb);
> +	component_unbind_all(drm->dev, drm);
> +	xlnx_crtc_helper_fini(drm, xlnx_drm->crtc);
> +	drm_kms_helper_poll_fini(drm);
> +	drm_mode_config_cleanup(drm);
> +	drm_dev_unref(drm);
> +}
> +
> +static const struct component_master_ops xlnx_master_ops = {
> +	.bind	= xlnx_bind,
> +	.unbind	= xlnx_unbind,
> +};
> +
> +static int xlnx_of_component_probe(struct device *dev,
> +				   int (*compare_of)(struct device *, void *),
> +				   const struct component_master_ops *m_ops)
> +{
> +	struct device_node *ep, *port, *remote;
> +	struct component_match *match = NULL;
> +	int i;
> +
> +	if (!dev->of_node)
> +		return -EINVAL;
> +
> +	for (i = 0; ; i++) {
> +		port = of_parse_phandle(dev->of_node, "ports", i);
> +		if (!port)
> +			break;
> +
> +		if (!of_device_is_available(port->parent)) {
> +			of_node_put(port);
> +			continue;
> +		}
> +
> +		component_match_add(dev, &match, compare_of, port->parent);
> +		of_node_put(port);
> +	}
> +
> +	if (i == 0) {
> +		dev_err(dev, "missing 'ports' property\n");
> +		return -ENODEV;
> +	}
> +
> +	if (!match) {
> +		dev_err(dev, "no available port\n");
> +		return -ENODEV;
> +	}
> +
> +	for (i = 0; ; i++) {
> +		port = of_parse_phandle(dev->of_node, "ports", i);
> +		if (!port)
> +			break;
> +
> +		if (!of_device_is_available(port->parent)) {
> +			of_node_put(port);
> +			continue;
> +		}
> +
> +		for_each_child_of_node(port, ep) {
> +			remote = of_graph_get_remote_port_parent(ep);
> +			if (!remote || !of_device_is_available(remote)) {
> +				of_node_put(remote);
> +				continue;
> +			} else if (!of_device_is_available(remote->parent)) {
> +				dev_warn(dev, "parent dev of %s unavailable\n",
> +					 remote->full_name);
> +				of_node_put(remote);
> +				continue;
> +			}
> +			component_match_add(dev, &match, compare_of, remote);
> +			of_node_put(remote);
> +		}
> +		of_node_put(port);
> +	}
> +
> +	return component_master_add_with_match(dev, m_ops, match);
> +}
> +
> +static int xlnx_compare_of(struct device *dev, void *data)
> +{
> +	return dev->of_node == data;
> +}
> +
> +static int xlnx_platform_probe(struct platform_device *pdev)
> +{
> +	return xlnx_of_component_probe(&pdev->dev, xlnx_compare_of,
> +				       &xlnx_master_ops);
> +}
> +
> +static int xlnx_platform_remove(struct platform_device *pdev)
> +{
> +	component_master_del(&pdev->dev, &xlnx_master_ops);
> +	return 0;
> +}
> +
> +static void xlnx_platform_shutdown(struct platform_device *pdev)
> +{
> +	struct xlnx_drm *xlnx_drm = platform_get_drvdata(pdev);
> +
> +	drm_put_dev(xlnx_drm->drm);
> +}
> +
> +static int __maybe_unused xlnx_pm_suspend(struct device *dev)
> +{
> +	struct xlnx_drm *xlnx_drm = dev_get_drvdata(dev);
> +	struct drm_device *drm = xlnx_drm->drm;
> +
> +	drm_kms_helper_poll_disable(drm);
> +
> +	xlnx_drm->suspend_state = drm_atomic_helper_suspend(drm);
> +	if (IS_ERR(xlnx_drm->suspend_state)) {
> +		drm_kms_helper_poll_enable(drm);
> +		return PTR_ERR(xlnx_drm->suspend_state);
> +	}
> +
> +	return 0;
> +}
> +
> +static int __maybe_unused xlnx_pm_resume(struct device *dev)
> +{
> +	struct xlnx_drm *xlnx_drm = dev_get_drvdata(dev);
> +	struct drm_device *drm = xlnx_drm->drm;
> +
> +	drm_atomic_helper_resume(drm, xlnx_drm->suspend_state);
> +	drm_kms_helper_poll_enable(drm);
> +
> +	return 0;
> +}
> +
> +static const struct dev_pm_ops xlnx_pm_ops = {
> +	SET_SYSTEM_SLEEP_PM_OPS(xlnx_pm_suspend, xlnx_pm_resume)
> +};
> +
> +static const struct of_device_id xlnx_of_match[] = {
> +	{ .compatible = "xlnx,kms", },
> +	{ /* end of table */ },
> +};
> +MODULE_DEVICE_TABLE(of, xlnx_of_match);
> +
> +static struct platform_driver xlnx_driver = {
> +	.probe			= xlnx_platform_probe,
> +	.remove			= xlnx_platform_remove,
> +	.shutdown		= xlnx_platform_shutdown,
> +	.driver			= {
> +		.name		= "xlnx-drm",
> +		.pm		= &xlnx_pm_ops,
> +		.of_match_table	= xlnx_of_match,
> +	},
> +};
> +
> +module_platform_driver(xlnx_driver);
> +
> +MODULE_AUTHOR("Xilinx, Inc.");
> +MODULE_DESCRIPTION("Xilinx DRM KMS Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/gpu/drm/xlnx/xlnx_drv.h b/drivers/gpu/drm/xlnx/xlnx_drv.h
> new file mode 100644
> index 0000000..6ec285c
> --- /dev/null
> +++ b/drivers/gpu/drm/xlnx/xlnx_drv.h
> @@ -0,0 +1,22 @@
> +/*
> + * Xilinx DRM KMS Header for Xilinx
> + *
> + *  Copyright (C) 2013 - 2018 Xilinx, Inc.
> + *
> + *  Author: Hyun Woo Kwon <hyunk@xxxxxxxxxx>
> + *
> + * SPDX-License-Identifier: GPL-2.0
> + */
> +
> +#ifndef _XLNX_DRV_H_
> +#define _XLNX_DRV_H_
> +
> +struct drm_device;
> +struct xlnx_crtc_helper;
> +
> +uint32_t xlnx_get_format(struct drm_device *drm);
> +unsigned int xlnx_get_align(struct drm_device *drm);
> +struct xlnx_crtc_helper *xlnx_get_crtc_helper(struct drm_device *drm);
> +struct xlnx_bridge_helper *xlnx_get_bridge_helper(struct drm_device *drm);
> +
> +#endif /* _XLNX_DRV_H_ */
> diff --git a/drivers/gpu/drm/xlnx/xlnx_fb.c b/drivers/gpu/drm/xlnx/xlnx_fb.c
> index dbe9fbf..029a4d3 100644
> --- a/drivers/gpu/drm/xlnx/xlnx_fb.c
> +++ b/drivers/gpu/drm/xlnx/xlnx_fb.c
> @@ -18,6 +18,7 @@
>  #include <drm/drm_fb_helper.h>
>  #include <drm/drm_gem_cma_helper.h>
>  
> +#include "xlnx_drv.h"
>  #include "xlnx_fb.h"
>  
>  #define XLNX_MAX_PLANES	4
> diff --git a/drivers/gpu/drm/xlnx/xlnx_gem.c b/drivers/gpu/drm/xlnx/xlnx_gem.c
> index af1abdc..6395f65 100644
> --- a/drivers/gpu/drm/xlnx/xlnx_gem.c
> +++ b/drivers/gpu/drm/xlnx/xlnx_gem.c
> @@ -11,6 +11,7 @@
>  #include <drm/drmP.h>
>  #include <drm/drm_gem_cma_helper.h>
>  
> +#include "xlnx_drv.h"
>  #include "xlnx_gem.h"
>  
>  /*
> -- 
> 2.7.4
> 
> _______________________________________________
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> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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