Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 484 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
new file mode 100644
index 000000000..16c539657
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -0,0 +1,484 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Authors:
+ *	Inki Dae <inki.dae@samsung.com>
+ *	Joonyoung Shim <jy0922.shim@samsung.com>
+ *	Seung-Woo Kim <sw0312.kim@samsung.com>
+ */
+
+#include <linux/component.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/uaccess.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_file.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+#include <drm/exynos_drm.h>
+
+#include "exynos_drm_drv.h"
+#include "exynos_drm_fb.h"
+#include "exynos_drm_fbdev.h"
+#include "exynos_drm_g2d.h"
+#include "exynos_drm_gem.h"
+#include "exynos_drm_ipp.h"
+#include "exynos_drm_plane.h"
+#include "exynos_drm_vidi.h"
+
+#define DRIVER_NAME	"exynos"
+#define DRIVER_DESC	"Samsung SoC DRM"
+#define DRIVER_DATE	"20180330"
+
+/*
+ * Interface history:
+ *
+ * 1.0 - Original version
+ * 1.1 - Upgrade IPP driver to version 2.0
+ */
+#define DRIVER_MAJOR	1
+#define DRIVER_MINOR	1
+
+static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
+{
+	struct drm_exynos_file_private *file_priv;
+	int ret;
+
+	file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
+	if (!file_priv)
+		return -ENOMEM;
+
+	file->driver_priv = file_priv;
+	ret = g2d_open(dev, file);
+	if (ret)
+		goto err_file_priv_free;
+
+	return ret;
+
+err_file_priv_free:
+	kfree(file_priv);
+	file->driver_priv = NULL;
+	return ret;
+}
+
+static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
+{
+	g2d_close(dev, file);
+	kfree(file->driver_priv);
+	file->driver_priv = NULL;
+}
+
+static const struct drm_ioctl_desc exynos_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
+			DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
+			exynos_drm_ipp_get_res_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
+			exynos_drm_ipp_get_limits_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
+			DRM_RENDER_ALLOW),
+};
+
+DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops);
+
+static const struct drm_driver exynos_drm_driver = {
+	.driver_features	= DRIVER_MODESET | DRIVER_GEM
+				  | DRIVER_ATOMIC | DRIVER_RENDER,
+	.open			= exynos_drm_open,
+	.lastclose		= drm_fb_helper_lastclose,
+	.postclose		= exynos_drm_postclose,
+	.dumb_create		= exynos_drm_gem_dumb_create,
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_import	= exynos_drm_gem_prime_import,
+	.gem_prime_import_sg_table	= exynos_drm_gem_prime_import_sg_table,
+	.gem_prime_mmap		= drm_gem_prime_mmap,
+	.ioctls			= exynos_ioctls,
+	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
+	.fops			= &exynos_drm_driver_fops,
+	.name	= DRIVER_NAME,
+	.desc	= DRIVER_DESC,
+	.date	= DRIVER_DATE,
+	.major	= DRIVER_MAJOR,
+	.minor	= DRIVER_MINOR,
+};
+
+static int exynos_drm_suspend(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
+	return  drm_mode_config_helper_suspend(drm_dev);
+}
+
+static void exynos_drm_resume(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
+	drm_mode_config_helper_resume(drm_dev);
+}
+
+static const struct dev_pm_ops exynos_drm_pm_ops = {
+	.prepare = exynos_drm_suspend,
+	.complete = exynos_drm_resume,
+};
+
+/* forward declaration */
+static struct platform_driver exynos_drm_platform_driver;
+
+struct exynos_drm_driver_info {
+	struct platform_driver *driver;
+	unsigned int flags;
+};
+
+#define DRM_COMPONENT_DRIVER	BIT(0)	/* supports component framework */
+#define DRM_VIRTUAL_DEVICE	BIT(1)	/* create virtual platform device */
+#define DRM_FIMC_DEVICE		BIT(2)	/* devices shared with V4L2 subsystem */
+
+#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
+
+/*
+ * Connector drivers should not be placed before associated crtc drivers,
+ * because connector requires pipe number of its crtc during initialization.
+ */
+static struct exynos_drm_driver_info exynos_drm_drivers[] = {
+	{
+		DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
+		DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
+	}, {
+		DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
+		DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
+	}, {
+		DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
+		DRM_COMPONENT_DRIVER
+	}, {
+		&exynos_drm_platform_driver,
+		DRM_VIRTUAL_DEVICE
+	}
+};
+
+static struct component_match *exynos_drm_match_add(struct device *dev)
+{
+	struct component_match *match = NULL;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+		struct device *p = NULL, *d;
+
+		if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
+			continue;
+
+		while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
+			put_device(p);
+
+			if (!(info->flags & DRM_FIMC_DEVICE) ||
+			    exynos_drm_check_fimc_device(d) == 0)
+				component_match_add(dev, &match, component_compare_dev, d);
+			p = d;
+		}
+		put_device(p);
+	}
+
+	return match ?: ERR_PTR(-ENODEV);
+}
+
+static int exynos_drm_bind(struct device *dev)
+{
+	struct exynos_drm_private *private;
+	struct drm_encoder *encoder;
+	struct drm_device *drm;
+	unsigned int clone_mask;
+	int ret;
+
+	drm = drm_dev_alloc(&exynos_drm_driver, dev);
+	if (IS_ERR(drm))
+		return PTR_ERR(drm);
+
+	private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
+	if (!private) {
+		ret = -ENOMEM;
+		goto err_free_drm;
+	}
+
+	init_waitqueue_head(&private->wait);
+	spin_lock_init(&private->lock);
+
+	dev_set_drvdata(dev, drm);
+	drm->dev_private = (void *)private;
+
+	drm_mode_config_init(drm);
+
+	exynos_drm_mode_config_init(drm);
+
+	/* setup possible_clones. */
+	clone_mask = 0;
+	list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
+		clone_mask |= drm_encoder_mask(encoder);
+
+	list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
+		encoder->possible_clones = clone_mask;
+
+	/* Try to bind all sub drivers. */
+	ret = component_bind_all(drm->dev, drm);
+	if (ret)
+		goto err_mode_config_cleanup;
+
+	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
+	if (ret)
+		goto err_unbind_all;
+
+	drm_mode_config_reset(drm);
+
+	/* init kms poll for handling hpd */
+	drm_kms_helper_poll_init(drm);
+
+	ret = exynos_drm_fbdev_init(drm);
+	if (ret)
+		goto err_cleanup_poll;
+
+	/* register the DRM device */
+	ret = drm_dev_register(drm, 0);
+	if (ret < 0)
+		goto err_cleanup_fbdev;
+
+	return 0;
+
+err_cleanup_fbdev:
+	exynos_drm_fbdev_fini(drm);
+err_cleanup_poll:
+	drm_kms_helper_poll_fini(drm);
+err_unbind_all:
+	component_unbind_all(drm->dev, drm);
+err_mode_config_cleanup:
+	drm_mode_config_cleanup(drm);
+	exynos_drm_cleanup_dma(drm);
+	kfree(private);
+err_free_drm:
+	drm_dev_put(drm);
+
+	return ret;
+}
+
+static void exynos_drm_unbind(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+
+	drm_dev_unregister(drm);
+
+	exynos_drm_fbdev_fini(drm);
+	drm_kms_helper_poll_fini(drm);
+
+	component_unbind_all(drm->dev, drm);
+	drm_mode_config_cleanup(drm);
+	exynos_drm_cleanup_dma(drm);
+
+	kfree(drm->dev_private);
+	drm->dev_private = NULL;
+	dev_set_drvdata(dev, NULL);
+
+	drm_dev_put(drm);
+}
+
+static const struct component_master_ops exynos_drm_ops = {
+	.bind		= exynos_drm_bind,
+	.unbind		= exynos_drm_unbind,
+};
+
+static int exynos_drm_platform_probe(struct platform_device *pdev)
+{
+	struct component_match *match;
+
+	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+	match = exynos_drm_match_add(&pdev->dev);
+	if (IS_ERR(match))
+		return PTR_ERR(match);
+
+	return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
+					       match);
+}
+
+static int exynos_drm_platform_remove(struct platform_device *pdev)
+{
+	component_master_del(&pdev->dev, &exynos_drm_ops);
+	return 0;
+}
+
+static struct platform_driver exynos_drm_platform_driver = {
+	.probe	= exynos_drm_platform_probe,
+	.remove	= exynos_drm_platform_remove,
+	.driver	= {
+		.name	= "exynos-drm",
+		.pm	= &exynos_drm_pm_ops,
+	},
+};
+
+static void exynos_drm_unregister_devices(void)
+{
+	int i;
+
+	for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+		struct device *dev;
+
+		if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
+			continue;
+
+		while ((dev = platform_find_device_by_driver(NULL,
+						&info->driver->driver))) {
+			put_device(dev);
+			platform_device_unregister(to_platform_device(dev));
+		}
+	}
+}
+
+static int exynos_drm_register_devices(void)
+{
+	struct platform_device *pdev;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+
+		if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
+			continue;
+
+		pdev = platform_device_register_simple(
+					info->driver->driver.name, -1, NULL, 0);
+		if (IS_ERR(pdev))
+			goto fail;
+	}
+
+	return 0;
+fail:
+	exynos_drm_unregister_devices();
+	return PTR_ERR(pdev);
+}
+
+static void exynos_drm_unregister_drivers(void)
+{
+	int i;
+
+	for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+
+		if (!info->driver)
+			continue;
+
+		platform_driver_unregister(info->driver);
+	}
+}
+
+static int exynos_drm_register_drivers(void)
+{
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+
+		if (!info->driver)
+			continue;
+
+		ret = platform_driver_register(info->driver);
+		if (ret)
+			goto fail;
+	}
+	return 0;
+fail:
+	exynos_drm_unregister_drivers();
+	return ret;
+}
+
+static int exynos_drm_init(void)
+{
+	int ret;
+
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
+	ret = exynos_drm_register_devices();
+	if (ret)
+		return ret;
+
+	ret = exynos_drm_register_drivers();
+	if (ret)
+		goto err_unregister_pdevs;
+
+	return 0;
+
+err_unregister_pdevs:
+	exynos_drm_unregister_devices();
+
+	return ret;
+}
+
+static void exynos_drm_exit(void)
+{
+	exynos_drm_unregister_drivers();
+	exynos_drm_unregister_devices();
+}
+
+module_init(exynos_drm_init);
+module_exit(exynos_drm_exit);
+
+MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
+MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
+MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC DRM Driver");
+MODULE_LICENSE("GPL");