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, 435 insertions, 0 deletions

diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c
new file mode 100644
index 000000000..9f6ba770a
--- /dev/null
+++ b/drivers/crypto/rockchip/rk3288_crypto.c
@@ -0,0 +1,435 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Crypto acceleration support for Rockchip RK3288
+ *
+ * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * Author: Zain Wang <zain.wang@rock-chips.com>
+ *
+ * Some ideas are from marvell-cesa.c and s5p-sss.c driver.
+ */
+
+#include "rk3288_crypto.h"
+#include <linux/dma-mapping.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/clk.h>
+#include <linux/crypto.h>
+#include <linux/reset.h>
+
+static struct rockchip_ip rocklist = {
+	.dev_list = LIST_HEAD_INIT(rocklist.dev_list),
+	.lock = __SPIN_LOCK_UNLOCKED(rocklist.lock),
+};
+
+struct rk_crypto_info *get_rk_crypto(void)
+{
+	struct rk_crypto_info *first;
+
+	spin_lock(&rocklist.lock);
+	first = list_first_entry_or_null(&rocklist.dev_list,
+					 struct rk_crypto_info, list);
+	list_rotate_left(&rocklist.dev_list);
+	spin_unlock(&rocklist.lock);
+	return first;
+}
+
+static const struct rk_variant rk3288_variant = {
+	.num_clks = 4,
+	.rkclks = {
+		{ "sclk", 150000000},
+	}
+};
+
+static const struct rk_variant rk3328_variant = {
+	.num_clks = 3,
+};
+
+static const struct rk_variant rk3399_variant = {
+	.num_clks = 3,
+};
+
+static int rk_crypto_get_clks(struct rk_crypto_info *dev)
+{
+	int i, j, err;
+	unsigned long cr;
+
+	dev->num_clks = devm_clk_bulk_get_all(dev->dev, &dev->clks);
+	if (dev->num_clks < dev->variant->num_clks) {
+		dev_err(dev->dev, "Missing clocks, got %d instead of %d\n",
+			dev->num_clks, dev->variant->num_clks);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < dev->num_clks; i++) {
+		cr = clk_get_rate(dev->clks[i].clk);
+		for (j = 0; j < ARRAY_SIZE(dev->variant->rkclks); j++) {
+			if (dev->variant->rkclks[j].max == 0)
+				continue;
+			if (strcmp(dev->variant->rkclks[j].name, dev->clks[i].id))
+				continue;
+			if (cr > dev->variant->rkclks[j].max) {
+				err = clk_set_rate(dev->clks[i].clk,
+						   dev->variant->rkclks[j].max);
+				if (err)
+					dev_err(dev->dev, "Fail downclocking %s from %lu to %lu\n",
+						dev->variant->rkclks[j].name, cr,
+						dev->variant->rkclks[j].max);
+				else
+					dev_info(dev->dev, "Downclocking %s from %lu to %lu\n",
+						 dev->variant->rkclks[j].name, cr,
+						 dev->variant->rkclks[j].max);
+			}
+		}
+	}
+	return 0;
+}
+
+static int rk_crypto_enable_clk(struct rk_crypto_info *dev)
+{
+	int err;
+
+	err = clk_bulk_prepare_enable(dev->num_clks, dev->clks);
+	if (err)
+		dev_err(dev->dev, "Could not enable clock clks\n");
+
+	return err;
+}
+
+static void rk_crypto_disable_clk(struct rk_crypto_info *dev)
+{
+	clk_bulk_disable_unprepare(dev->num_clks, dev->clks);
+}
+
+/*
+ * Power management strategy: The device is suspended until a request
+ * is handled. For avoiding suspend/resume yoyo, the autosuspend is set to 2s.
+ */
+static int rk_crypto_pm_suspend(struct device *dev)
+{
+	struct rk_crypto_info *rkdev = dev_get_drvdata(dev);
+
+	rk_crypto_disable_clk(rkdev);
+	reset_control_assert(rkdev->rst);
+
+	return 0;
+}
+
+static int rk_crypto_pm_resume(struct device *dev)
+{
+	struct rk_crypto_info *rkdev = dev_get_drvdata(dev);
+	int ret;
+
+	ret = rk_crypto_enable_clk(rkdev);
+	if (ret)
+		return ret;
+
+	reset_control_deassert(rkdev->rst);
+	return 0;
+
+}
+
+static const struct dev_pm_ops rk_crypto_pm_ops = {
+	SET_RUNTIME_PM_OPS(rk_crypto_pm_suspend, rk_crypto_pm_resume, NULL)
+};
+
+static int rk_crypto_pm_init(struct rk_crypto_info *rkdev)
+{
+	int err;
+
+	pm_runtime_use_autosuspend(rkdev->dev);
+	pm_runtime_set_autosuspend_delay(rkdev->dev, 2000);
+
+	err = pm_runtime_set_suspended(rkdev->dev);
+	if (err)
+		return err;
+	pm_runtime_enable(rkdev->dev);
+	return err;
+}
+
+static void rk_crypto_pm_exit(struct rk_crypto_info *rkdev)
+{
+	pm_runtime_disable(rkdev->dev);
+}
+
+static irqreturn_t rk_crypto_irq_handle(int irq, void *dev_id)
+{
+	struct rk_crypto_info *dev  = platform_get_drvdata(dev_id);
+	u32 interrupt_status;
+
+	interrupt_status = CRYPTO_READ(dev, RK_CRYPTO_INTSTS);
+	CRYPTO_WRITE(dev, RK_CRYPTO_INTSTS, interrupt_status);
+
+	dev->status = 1;
+	if (interrupt_status & 0x0a) {
+		dev_warn(dev->dev, "DMA Error\n");
+		dev->status = 0;
+	}
+	complete(&dev->complete);
+
+	return IRQ_HANDLED;
+}
+
+static struct rk_crypto_tmp *rk_cipher_algs[] = {
+	&rk_ecb_aes_alg,
+	&rk_cbc_aes_alg,
+	&rk_ecb_des_alg,
+	&rk_cbc_des_alg,
+	&rk_ecb_des3_ede_alg,
+	&rk_cbc_des3_ede_alg,
+	&rk_ahash_sha1,
+	&rk_ahash_sha256,
+	&rk_ahash_md5,
+};
+
+#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG
+static int rk_crypto_debugfs_show(struct seq_file *seq, void *v)
+{
+	struct rk_crypto_info *dd;
+	unsigned int i;
+
+	spin_lock(&rocklist.lock);
+	list_for_each_entry(dd, &rocklist.dev_list, list) {
+		seq_printf(seq, "%s %s requests: %lu\n",
+			   dev_driver_string(dd->dev), dev_name(dd->dev),
+			   dd->nreq);
+	}
+	spin_unlock(&rocklist.lock);
+
+	for (i = 0; i < ARRAY_SIZE(rk_cipher_algs); i++) {
+		if (!rk_cipher_algs[i]->dev)
+			continue;
+		switch (rk_cipher_algs[i]->type) {
+		case CRYPTO_ALG_TYPE_SKCIPHER:
+			seq_printf(seq, "%s %s reqs=%lu fallback=%lu\n",
+				   rk_cipher_algs[i]->alg.skcipher.base.cra_driver_name,
+				   rk_cipher_algs[i]->alg.skcipher.base.cra_name,
+				   rk_cipher_algs[i]->stat_req, rk_cipher_algs[i]->stat_fb);
+			seq_printf(seq, "\tfallback due to length: %lu\n",
+				   rk_cipher_algs[i]->stat_fb_len);
+			seq_printf(seq, "\tfallback due to alignment: %lu\n",
+				   rk_cipher_algs[i]->stat_fb_align);
+			seq_printf(seq, "\tfallback due to SGs: %lu\n",
+				   rk_cipher_algs[i]->stat_fb_sgdiff);
+			break;
+		case CRYPTO_ALG_TYPE_AHASH:
+			seq_printf(seq, "%s %s reqs=%lu fallback=%lu\n",
+				   rk_cipher_algs[i]->alg.hash.halg.base.cra_driver_name,
+				   rk_cipher_algs[i]->alg.hash.halg.base.cra_name,
+				   rk_cipher_algs[i]->stat_req, rk_cipher_algs[i]->stat_fb);
+			break;
+		}
+	}
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(rk_crypto_debugfs);
+#endif
+
+static void register_debugfs(struct rk_crypto_info *crypto_info)
+{
+#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG
+	/* Ignore error of debugfs */
+	rocklist.dbgfs_dir = debugfs_create_dir("rk3288_crypto", NULL);
+	rocklist.dbgfs_stats = debugfs_create_file("stats", 0444,
+						   rocklist.dbgfs_dir,
+						   &rocklist,
+						   &rk_crypto_debugfs_fops);
+#endif
+}
+
+static int rk_crypto_register(struct rk_crypto_info *crypto_info)
+{
+	unsigned int i, k;
+	int err = 0;
+
+	for (i = 0; i < ARRAY_SIZE(rk_cipher_algs); i++) {
+		rk_cipher_algs[i]->dev = crypto_info;
+		switch (rk_cipher_algs[i]->type) {
+		case CRYPTO_ALG_TYPE_SKCIPHER:
+			dev_info(crypto_info->dev, "Register %s as %s\n",
+				 rk_cipher_algs[i]->alg.skcipher.base.cra_name,
+				 rk_cipher_algs[i]->alg.skcipher.base.cra_driver_name);
+			err = crypto_register_skcipher(&rk_cipher_algs[i]->alg.skcipher);
+			break;
+		case CRYPTO_ALG_TYPE_AHASH:
+			dev_info(crypto_info->dev, "Register %s as %s\n",
+				 rk_cipher_algs[i]->alg.hash.halg.base.cra_name,
+				 rk_cipher_algs[i]->alg.hash.halg.base.cra_driver_name);
+			err = crypto_register_ahash(&rk_cipher_algs[i]->alg.hash);
+			break;
+		default:
+			dev_err(crypto_info->dev, "unknown algorithm\n");
+		}
+		if (err)
+			goto err_cipher_algs;
+	}
+	return 0;
+
+err_cipher_algs:
+	for (k = 0; k < i; k++) {
+		if (rk_cipher_algs[i]->type == CRYPTO_ALG_TYPE_SKCIPHER)
+			crypto_unregister_skcipher(&rk_cipher_algs[k]->alg.skcipher);
+		else
+			crypto_unregister_ahash(&rk_cipher_algs[i]->alg.hash);
+	}
+	return err;
+}
+
+static void rk_crypto_unregister(void)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(rk_cipher_algs); i++) {
+		if (rk_cipher_algs[i]->type == CRYPTO_ALG_TYPE_SKCIPHER)
+			crypto_unregister_skcipher(&rk_cipher_algs[i]->alg.skcipher);
+		else
+			crypto_unregister_ahash(&rk_cipher_algs[i]->alg.hash);
+	}
+}
+
+static const struct of_device_id crypto_of_id_table[] = {
+	{ .compatible = "rockchip,rk3288-crypto",
+	  .data = &rk3288_variant,
+	},
+	{ .compatible = "rockchip,rk3328-crypto",
+	  .data = &rk3328_variant,
+	},
+	{ .compatible = "rockchip,rk3399-crypto",
+	  .data = &rk3399_variant,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, crypto_of_id_table);
+
+static int rk_crypto_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct rk_crypto_info *crypto_info, *first;
+	int err = 0;
+
+	crypto_info = devm_kzalloc(&pdev->dev,
+				   sizeof(*crypto_info), GFP_KERNEL);
+	if (!crypto_info) {
+		err = -ENOMEM;
+		goto err_crypto;
+	}
+
+	crypto_info->dev = &pdev->dev;
+	platform_set_drvdata(pdev, crypto_info);
+
+	crypto_info->variant = of_device_get_match_data(&pdev->dev);
+	if (!crypto_info->variant) {
+		dev_err(&pdev->dev, "Missing variant\n");
+		return -EINVAL;
+	}
+
+	crypto_info->rst = devm_reset_control_array_get_exclusive(dev);
+	if (IS_ERR(crypto_info->rst)) {
+		err = PTR_ERR(crypto_info->rst);
+		goto err_crypto;
+	}
+
+	reset_control_assert(crypto_info->rst);
+	usleep_range(10, 20);
+	reset_control_deassert(crypto_info->rst);
+
+	crypto_info->reg = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(crypto_info->reg)) {
+		err = PTR_ERR(crypto_info->reg);
+		goto err_crypto;
+	}
+
+	err = rk_crypto_get_clks(crypto_info);
+	if (err)
+		goto err_crypto;
+
+	crypto_info->irq = platform_get_irq(pdev, 0);
+	if (crypto_info->irq < 0) {
+		err = crypto_info->irq;
+		goto err_crypto;
+	}
+
+	err = devm_request_irq(&pdev->dev, crypto_info->irq,
+			       rk_crypto_irq_handle, IRQF_SHARED,
+			       "rk-crypto", pdev);
+
+	if (err) {
+		dev_err(&pdev->dev, "irq request failed.\n");
+		goto err_crypto;
+	}
+
+	crypto_info->engine = crypto_engine_alloc_init(&pdev->dev, true);
+	crypto_engine_start(crypto_info->engine);
+	init_completion(&crypto_info->complete);
+
+	err = rk_crypto_pm_init(crypto_info);
+	if (err)
+		goto err_pm;
+
+	spin_lock(&rocklist.lock);
+	first = list_first_entry_or_null(&rocklist.dev_list,
+					 struct rk_crypto_info, list);
+	list_add_tail(&crypto_info->list, &rocklist.dev_list);
+	spin_unlock(&rocklist.lock);
+
+	if (!first) {
+		err = rk_crypto_register(crypto_info);
+		if (err) {
+			dev_err(dev, "Fail to register crypto algorithms");
+			goto err_register_alg;
+		}
+
+		register_debugfs(crypto_info);
+	}
+
+	return 0;
+
+err_register_alg:
+	rk_crypto_pm_exit(crypto_info);
+err_pm:
+	crypto_engine_exit(crypto_info->engine);
+err_crypto:
+	dev_err(dev, "Crypto Accelerator not successfully registered\n");
+	return err;
+}
+
+static int rk_crypto_remove(struct platform_device *pdev)
+{
+	struct rk_crypto_info *crypto_tmp = platform_get_drvdata(pdev);
+	struct rk_crypto_info *first;
+
+	spin_lock_bh(&rocklist.lock);
+	list_del(&crypto_tmp->list);
+	first = list_first_entry_or_null(&rocklist.dev_list,
+					 struct rk_crypto_info, list);
+	spin_unlock_bh(&rocklist.lock);
+
+	if (!first) {
+#ifdef CONFIG_CRYPTO_DEV_ROCKCHIP_DEBUG
+		debugfs_remove_recursive(rocklist.dbgfs_dir);
+#endif
+		rk_crypto_unregister();
+	}
+	rk_crypto_pm_exit(crypto_tmp);
+	crypto_engine_exit(crypto_tmp->engine);
+	return 0;
+}
+
+static struct platform_driver crypto_driver = {
+	.probe		= rk_crypto_probe,
+	.remove		= rk_crypto_remove,
+	.driver		= {
+		.name	= "rk3288-crypto",
+		.pm		= &rk_crypto_pm_ops,
+		.of_match_table	= crypto_of_id_table,
+	},
+};
+
+module_platform_driver(crypto_driver);
+
+MODULE_AUTHOR("Zain Wang <zain.wang@rock-chips.com>");
+MODULE_DESCRIPTION("Support for Rockchip's cryptographic engine");
+MODULE_LICENSE("GPL");