From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/staging/greybus/arche-apb-ctrl.c | 491 +++++++++++++++++++++++++++++++ 1 file changed, 491 insertions(+) create mode 100644 drivers/staging/greybus/arche-apb-ctrl.c (limited to 'drivers/staging/greybus/arche-apb-ctrl.c') diff --git a/drivers/staging/greybus/arche-apb-ctrl.c b/drivers/staging/greybus/arche-apb-ctrl.c new file mode 100644 index 000000000..45afa208d --- /dev/null +++ b/drivers/staging/greybus/arche-apb-ctrl.c @@ -0,0 +1,491 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Arche Platform driver to control APB. + * + * Copyright 2014-2015 Google Inc. + * Copyright 2014-2015 Linaro Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "arche_platform.h" + +static void apb_bootret_deassert(struct device *dev); + +struct arche_apb_ctrl_drvdata { + /* Control GPIO signals to and from AP <=> AP Bridges */ + struct gpio_desc *resetn; + struct gpio_desc *boot_ret; + struct gpio_desc *pwroff; + struct gpio_desc *wake_in; + struct gpio_desc *wake_out; + struct gpio_desc *pwrdn; + + enum arche_platform_state state; + bool init_disabled; + + struct regulator *vcore; + struct regulator *vio; + + struct gpio_desc *clk_en; + struct clk *clk; + + struct pinctrl *pinctrl; + struct pinctrl_state *pin_default; + + /* V2: SPI Bus control */ + struct gpio_desc *spi_en; + bool spi_en_polarity_high; +}; + +/* + * Note that these low level api's are active high + */ +static inline void deassert_reset(struct gpio_desc *gpio) +{ + gpiod_set_raw_value(gpio, 1); +} + +static inline void assert_reset(struct gpio_desc *gpio) +{ + gpiod_set_raw_value(gpio, 0); +} + +/* + * Note: Please do not modify the below sequence, as it is as per the spec + */ +static int coldboot_seq(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct arche_apb_ctrl_drvdata *apb = platform_get_drvdata(pdev); + int ret; + + if (apb->init_disabled || + apb->state == ARCHE_PLATFORM_STATE_ACTIVE) + return 0; + + /* Hold APB in reset state */ + assert_reset(apb->resetn); + + if (apb->state == ARCHE_PLATFORM_STATE_FW_FLASHING && apb->spi_en) + devm_gpiod_put(dev, apb->spi_en); + + /* Enable power to APB */ + if (!IS_ERR(apb->vcore)) { + ret = regulator_enable(apb->vcore); + if (ret) { + dev_err(dev, "failed to enable core regulator\n"); + return ret; + } + } + + if (!IS_ERR(apb->vio)) { + ret = regulator_enable(apb->vio); + if (ret) { + dev_err(dev, "failed to enable IO regulator\n"); + return ret; + } + } + + apb_bootret_deassert(dev); + + /* On DB3 clock was not mandatory */ + if (apb->clk_en) + gpiod_set_value(apb->clk_en, 1); + + usleep_range(100, 200); + + /* deassert reset to APB : Active-low signal */ + deassert_reset(apb->resetn); + + apb->state = ARCHE_PLATFORM_STATE_ACTIVE; + + return 0; +} + +static int fw_flashing_seq(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct arche_apb_ctrl_drvdata *apb = platform_get_drvdata(pdev); + int ret; + + if (apb->init_disabled || + apb->state == ARCHE_PLATFORM_STATE_FW_FLASHING) + return 0; + + ret = regulator_enable(apb->vcore); + if (ret) { + dev_err(dev, "failed to enable core regulator\n"); + return ret; + } + + ret = regulator_enable(apb->vio); + if (ret) { + dev_err(dev, "failed to enable IO regulator\n"); + return ret; + } + + if (apb->spi_en) { + unsigned long flags; + + if (apb->spi_en_polarity_high) + flags = GPIOD_OUT_HIGH; + else + flags = GPIOD_OUT_LOW; + + apb->spi_en = devm_gpiod_get(dev, "spi-en", flags); + if (IS_ERR(apb->spi_en)) { + ret = PTR_ERR(apb->spi_en); + dev_err(dev, "Failed requesting SPI bus en GPIO: %d\n", + ret); + return ret; + } + } + + /* for flashing device should be in reset state */ + assert_reset(apb->resetn); + apb->state = ARCHE_PLATFORM_STATE_FW_FLASHING; + + return 0; +} + +static int standby_boot_seq(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct arche_apb_ctrl_drvdata *apb = platform_get_drvdata(pdev); + + if (apb->init_disabled) + return 0; + + /* + * Even if it is in OFF state, + * then we do not want to change the state + */ + if (apb->state == ARCHE_PLATFORM_STATE_STANDBY || + apb->state == ARCHE_PLATFORM_STATE_OFF) + return 0; + + if (apb->state == ARCHE_PLATFORM_STATE_FW_FLASHING && apb->spi_en) + devm_gpiod_put(dev, apb->spi_en); + + /* + * As per WDM spec, do nothing + * + * Pasted from WDM spec, + * - A falling edge on POWEROFF_L is detected (a) + * - WDM enters standby mode, but no output signals are changed + */ + + /* TODO: POWEROFF_L is input to WDM module */ + apb->state = ARCHE_PLATFORM_STATE_STANDBY; + return 0; +} + +static void poweroff_seq(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct arche_apb_ctrl_drvdata *apb = platform_get_drvdata(pdev); + + if (apb->init_disabled || apb->state == ARCHE_PLATFORM_STATE_OFF) + return; + + if (apb->state == ARCHE_PLATFORM_STATE_FW_FLASHING && apb->spi_en) + devm_gpiod_put(dev, apb->spi_en); + + /* disable the clock */ + if (apb->clk_en) + gpiod_set_value(apb->clk_en, 0); + + if (!IS_ERR(apb->vcore) && regulator_is_enabled(apb->vcore) > 0) + regulator_disable(apb->vcore); + + if (!IS_ERR(apb->vio) && regulator_is_enabled(apb->vio) > 0) + regulator_disable(apb->vio); + + /* As part of exit, put APB back in reset state */ + assert_reset(apb->resetn); + apb->state = ARCHE_PLATFORM_STATE_OFF; + + /* TODO: May have to send an event to SVC about this exit */ +} + +static void apb_bootret_deassert(struct device *dev) +{ + struct arche_apb_ctrl_drvdata *apb = dev_get_drvdata(dev); + + gpiod_set_value(apb->boot_ret, 0); +} + +int apb_ctrl_coldboot(struct device *dev) +{ + return coldboot_seq(to_platform_device(dev)); +} + +int apb_ctrl_fw_flashing(struct device *dev) +{ + return fw_flashing_seq(to_platform_device(dev)); +} + +int apb_ctrl_standby_boot(struct device *dev) +{ + return standby_boot_seq(to_platform_device(dev)); +} + +void apb_ctrl_poweroff(struct device *dev) +{ + poweroff_seq(to_platform_device(dev)); +} + +static ssize_t state_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct platform_device *pdev = to_platform_device(dev); + struct arche_apb_ctrl_drvdata *apb = platform_get_drvdata(pdev); + int ret = 0; + bool is_disabled; + + if (sysfs_streq(buf, "off")) { + if (apb->state == ARCHE_PLATFORM_STATE_OFF) + return count; + + poweroff_seq(pdev); + } else if (sysfs_streq(buf, "active")) { + if (apb->state == ARCHE_PLATFORM_STATE_ACTIVE) + return count; + + poweroff_seq(pdev); + is_disabled = apb->init_disabled; + apb->init_disabled = false; + ret = coldboot_seq(pdev); + if (ret) + apb->init_disabled = is_disabled; + } else if (sysfs_streq(buf, "standby")) { + if (apb->state == ARCHE_PLATFORM_STATE_STANDBY) + return count; + + ret = standby_boot_seq(pdev); + } else if (sysfs_streq(buf, "fw_flashing")) { + if (apb->state == ARCHE_PLATFORM_STATE_FW_FLASHING) + return count; + + /* + * First we want to make sure we power off everything + * and then enter FW flashing state + */ + poweroff_seq(pdev); + ret = fw_flashing_seq(pdev); + } else { + dev_err(dev, "unknown state\n"); + ret = -EINVAL; + } + + return ret ? ret : count; +} + +static ssize_t state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct arche_apb_ctrl_drvdata *apb = dev_get_drvdata(dev); + + switch (apb->state) { + case ARCHE_PLATFORM_STATE_OFF: + return sprintf(buf, "off%s\n", + apb->init_disabled ? ",disabled" : ""); + case ARCHE_PLATFORM_STATE_ACTIVE: + return sprintf(buf, "active\n"); + case ARCHE_PLATFORM_STATE_STANDBY: + return sprintf(buf, "standby\n"); + case ARCHE_PLATFORM_STATE_FW_FLASHING: + return sprintf(buf, "fw_flashing\n"); + default: + return sprintf(buf, "unknown state\n"); + } +} + +static DEVICE_ATTR_RW(state); + +static int apb_ctrl_get_devtree_data(struct platform_device *pdev, + struct arche_apb_ctrl_drvdata *apb) +{ + struct device *dev = &pdev->dev; + int ret; + + apb->resetn = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(apb->resetn)) { + ret = PTR_ERR(apb->resetn); + dev_err(dev, "Failed requesting reset GPIO: %d\n", ret); + return ret; + } + + apb->boot_ret = devm_gpiod_get(dev, "boot-ret", GPIOD_OUT_LOW); + if (IS_ERR(apb->boot_ret)) { + ret = PTR_ERR(apb->boot_ret); + dev_err(dev, "Failed requesting bootret GPIO: %d\n", ret); + return ret; + } + + /* It's not mandatory to support power management interface */ + apb->pwroff = devm_gpiod_get_optional(dev, "pwr-off", GPIOD_IN); + if (IS_ERR(apb->pwroff)) { + ret = PTR_ERR(apb->pwroff); + dev_err(dev, "Failed requesting pwroff_n GPIO: %d\n", ret); + return ret; + } + + /* Do not make clock mandatory as of now (for DB3) */ + apb->clk_en = devm_gpiod_get_optional(dev, "clock-en", GPIOD_OUT_LOW); + if (IS_ERR(apb->clk_en)) { + ret = PTR_ERR(apb->clk_en); + dev_err(dev, "Failed requesting APB clock en GPIO: %d\n", ret); + return ret; + } + + apb->pwrdn = devm_gpiod_get(dev, "pwr-down", GPIOD_OUT_LOW); + if (IS_ERR(apb->pwrdn)) { + ret = PTR_ERR(apb->pwrdn); + dev_warn(dev, "Failed requesting power down GPIO: %d\n", ret); + return ret; + } + + /* Regulators are optional, as we may have fixed supply coming in */ + apb->vcore = devm_regulator_get(dev, "vcore"); + if (IS_ERR(apb->vcore)) + dev_warn(dev, "no core regulator found\n"); + + apb->vio = devm_regulator_get(dev, "vio"); + if (IS_ERR(apb->vio)) + dev_warn(dev, "no IO regulator found\n"); + + apb->pinctrl = devm_pinctrl_get(&pdev->dev); + if (IS_ERR(apb->pinctrl)) { + dev_err(&pdev->dev, "could not get pinctrl handle\n"); + return PTR_ERR(apb->pinctrl); + } + apb->pin_default = pinctrl_lookup_state(apb->pinctrl, "default"); + if (IS_ERR(apb->pin_default)) { + dev_err(&pdev->dev, "could not get default pin state\n"); + return PTR_ERR(apb->pin_default); + } + + /* Only applicable for platform >= V2 */ + if (of_property_read_bool(pdev->dev.of_node, "gb,spi-en-active-high")) + apb->spi_en_polarity_high = true; + + return 0; +} + +static int arche_apb_ctrl_probe(struct platform_device *pdev) +{ + int ret; + struct arche_apb_ctrl_drvdata *apb; + struct device *dev = &pdev->dev; + + apb = devm_kzalloc(&pdev->dev, sizeof(*apb), GFP_KERNEL); + if (!apb) + return -ENOMEM; + + ret = apb_ctrl_get_devtree_data(pdev, apb); + if (ret) { + dev_err(dev, "failed to get apb devicetree data %d\n", ret); + return ret; + } + + /* Initially set APB to OFF state */ + apb->state = ARCHE_PLATFORM_STATE_OFF; + /* Check whether device needs to be enabled on boot */ + if (of_property_read_bool(pdev->dev.of_node, "arche,init-disable")) + apb->init_disabled = true; + + platform_set_drvdata(pdev, apb); + + /* Create sysfs interface to allow user to change state dynamically */ + ret = device_create_file(dev, &dev_attr_state); + if (ret) { + dev_err(dev, "failed to create state file in sysfs\n"); + return ret; + } + + dev_info(&pdev->dev, "Device registered successfully\n"); + return 0; +} + +static int arche_apb_ctrl_remove(struct platform_device *pdev) +{ + device_remove_file(&pdev->dev, &dev_attr_state); + poweroff_seq(pdev); + platform_set_drvdata(pdev, NULL); + + return 0; +} + +static int __maybe_unused arche_apb_ctrl_suspend(struct device *dev) +{ + /* + * If timing profile permits, we may shutdown bridge + * completely + * + * TODO: sequence ?? + * + * Also, need to make sure we meet precondition for unipro suspend + * Precondition: Definition ??? + */ + return 0; +} + +static int __maybe_unused arche_apb_ctrl_resume(struct device *dev) +{ + /* + * At least for ES2 we have to meet the delay requirement between + * unipro switch and AP bridge init, depending on whether bridge is in + * OFF state or standby state. + * + * Based on whether bridge is in standby or OFF state we may have to + * assert multiple signals. Please refer to WDM spec, for more info. + * + */ + return 0; +} + +static void arche_apb_ctrl_shutdown(struct platform_device *pdev) +{ + apb_ctrl_poweroff(&pdev->dev); +} + +static SIMPLE_DEV_PM_OPS(arche_apb_ctrl_pm_ops, arche_apb_ctrl_suspend, + arche_apb_ctrl_resume); + +static const struct of_device_id arche_apb_ctrl_of_match[] = { + { .compatible = "usbffff,2", }, + { }, +}; + +static struct platform_driver arche_apb_ctrl_device_driver = { + .probe = arche_apb_ctrl_probe, + .remove = arche_apb_ctrl_remove, + .shutdown = arche_apb_ctrl_shutdown, + .driver = { + .name = "arche-apb-ctrl", + .pm = &arche_apb_ctrl_pm_ops, + .of_match_table = arche_apb_ctrl_of_match, + } +}; + +int __init arche_apb_init(void) +{ + return platform_driver_register(&arche_apb_ctrl_device_driver); +} + +void __exit arche_apb_exit(void) +{ + platform_driver_unregister(&arche_apb_ctrl_device_driver); +} -- cgit v1.2.3