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/bus/mhi/host/debugfs.c | 413 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 413 insertions(+) create mode 100644 drivers/bus/mhi/host/debugfs.c (limited to 'drivers/bus/mhi/host/debugfs.c') diff --git a/drivers/bus/mhi/host/debugfs.c b/drivers/bus/mhi/host/debugfs.c new file mode 100644 index 000000000..cfec7811d --- /dev/null +++ b/drivers/bus/mhi/host/debugfs.c @@ -0,0 +1,413 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2020, The Linux Foundation. All rights reserved. + * + */ + +#include +#include +#include +#include +#include +#include +#include "internal.h" + +static int mhi_debugfs_states_show(struct seq_file *m, void *d) +{ + struct mhi_controller *mhi_cntrl = m->private; + + /* states */ + seq_printf(m, "PM state: %s Device: %s MHI state: %s EE: %s wake: %s\n", + to_mhi_pm_state_str(mhi_cntrl->pm_state), + mhi_is_active(mhi_cntrl) ? "Active" : "Inactive", + mhi_state_str(mhi_cntrl->dev_state), + TO_MHI_EXEC_STR(mhi_cntrl->ee), + mhi_cntrl->wake_set ? "true" : "false"); + + /* counters */ + seq_printf(m, "M0: %u M2: %u M3: %u", mhi_cntrl->M0, mhi_cntrl->M2, + mhi_cntrl->M3); + + seq_printf(m, " device wake: %u pending packets: %u\n", + atomic_read(&mhi_cntrl->dev_wake), + atomic_read(&mhi_cntrl->pending_pkts)); + + return 0; +} + +static int mhi_debugfs_events_show(struct seq_file *m, void *d) +{ + struct mhi_controller *mhi_cntrl = m->private; + struct mhi_event *mhi_event; + struct mhi_event_ctxt *er_ctxt; + int i; + + if (!mhi_is_active(mhi_cntrl)) { + seq_puts(m, "Device not ready\n"); + return -ENODEV; + } + + er_ctxt = mhi_cntrl->mhi_ctxt->er_ctxt; + mhi_event = mhi_cntrl->mhi_event; + for (i = 0; i < mhi_cntrl->total_ev_rings; + i++, er_ctxt++, mhi_event++) { + struct mhi_ring *ring = &mhi_event->ring; + + if (mhi_event->offload_ev) { + seq_printf(m, "Index: %d is an offload event ring\n", + i); + continue; + } + + seq_printf(m, "Index: %d intmod count: %lu time: %lu", + i, (le32_to_cpu(er_ctxt->intmod) & EV_CTX_INTMODC_MASK) >> + __ffs(EV_CTX_INTMODC_MASK), + (le32_to_cpu(er_ctxt->intmod) & EV_CTX_INTMODT_MASK) >> + __ffs(EV_CTX_INTMODT_MASK)); + + seq_printf(m, " base: 0x%0llx len: 0x%llx", le64_to_cpu(er_ctxt->rbase), + le64_to_cpu(er_ctxt->rlen)); + + seq_printf(m, " rp: 0x%llx wp: 0x%llx", le64_to_cpu(er_ctxt->rp), + le64_to_cpu(er_ctxt->wp)); + + seq_printf(m, " local rp: 0x%pK db: 0x%pad\n", ring->rp, + &mhi_event->db_cfg.db_val); + } + + return 0; +} + +static int mhi_debugfs_channels_show(struct seq_file *m, void *d) +{ + struct mhi_controller *mhi_cntrl = m->private; + struct mhi_chan *mhi_chan; + struct mhi_chan_ctxt *chan_ctxt; + int i; + + if (!mhi_is_active(mhi_cntrl)) { + seq_puts(m, "Device not ready\n"); + return -ENODEV; + } + + mhi_chan = mhi_cntrl->mhi_chan; + chan_ctxt = mhi_cntrl->mhi_ctxt->chan_ctxt; + for (i = 0; i < mhi_cntrl->max_chan; i++, chan_ctxt++, mhi_chan++) { + struct mhi_ring *ring = &mhi_chan->tre_ring; + + if (mhi_chan->offload_ch) { + seq_printf(m, "%s(%u) is an offload channel\n", + mhi_chan->name, mhi_chan->chan); + continue; + } + + if (!mhi_chan->mhi_dev) + continue; + + seq_printf(m, + "%s(%u) state: 0x%lx brstmode: 0x%lx pollcfg: 0x%lx", + mhi_chan->name, mhi_chan->chan, (le32_to_cpu(chan_ctxt->chcfg) & + CHAN_CTX_CHSTATE_MASK) >> __ffs(CHAN_CTX_CHSTATE_MASK), + (le32_to_cpu(chan_ctxt->chcfg) & CHAN_CTX_BRSTMODE_MASK) >> + __ffs(CHAN_CTX_BRSTMODE_MASK), (le32_to_cpu(chan_ctxt->chcfg) & + CHAN_CTX_POLLCFG_MASK) >> __ffs(CHAN_CTX_POLLCFG_MASK)); + + seq_printf(m, " type: 0x%x event ring: %u", le32_to_cpu(chan_ctxt->chtype), + le32_to_cpu(chan_ctxt->erindex)); + + seq_printf(m, " base: 0x%llx len: 0x%llx rp: 0x%llx wp: 0x%llx", + le64_to_cpu(chan_ctxt->rbase), le64_to_cpu(chan_ctxt->rlen), + le64_to_cpu(chan_ctxt->rp), le64_to_cpu(chan_ctxt->wp)); + + seq_printf(m, " local rp: 0x%pK local wp: 0x%pK db: 0x%pad\n", + ring->rp, ring->wp, + &mhi_chan->db_cfg.db_val); + } + + return 0; +} + +static int mhi_device_info_show(struct device *dev, void *data) +{ + struct mhi_device *mhi_dev; + + if (dev->bus != &mhi_bus_type) + return 0; + + mhi_dev = to_mhi_device(dev); + + seq_printf((struct seq_file *)data, "%s: type: %s dev_wake: %u", + mhi_dev->name, mhi_dev->dev_type ? "Controller" : "Transfer", + mhi_dev->dev_wake); + + /* for transfer device types only */ + if (mhi_dev->dev_type == MHI_DEVICE_XFER) + seq_printf((struct seq_file *)data, " channels: %u(UL)/%u(DL)", + mhi_dev->ul_chan_id, mhi_dev->dl_chan_id); + + seq_puts((struct seq_file *)data, "\n"); + + return 0; +} + +static int mhi_debugfs_devices_show(struct seq_file *m, void *d) +{ + struct mhi_controller *mhi_cntrl = m->private; + + if (!mhi_is_active(mhi_cntrl)) { + seq_puts(m, "Device not ready\n"); + return -ENODEV; + } + + /* Show controller and client(s) info */ + mhi_device_info_show(&mhi_cntrl->mhi_dev->dev, m); + device_for_each_child(&mhi_cntrl->mhi_dev->dev, m, mhi_device_info_show); + + return 0; +} + +static int mhi_debugfs_regdump_show(struct seq_file *m, void *d) +{ + struct mhi_controller *mhi_cntrl = m->private; + enum mhi_state state; + enum mhi_ee_type ee; + int i, ret = -EIO; + u32 val; + void __iomem *mhi_base = mhi_cntrl->regs; + void __iomem *bhi_base = mhi_cntrl->bhi; + void __iomem *bhie_base = mhi_cntrl->bhie; + void __iomem *wake_db = mhi_cntrl->wake_db; + struct { + const char *name; + int offset; + void __iomem *base; + } regs[] = { + { "MHI_REGLEN", MHIREGLEN, mhi_base}, + { "MHI_VER", MHIVER, mhi_base}, + { "MHI_CFG", MHICFG, mhi_base}, + { "MHI_CTRL", MHICTRL, mhi_base}, + { "MHI_STATUS", MHISTATUS, mhi_base}, + { "MHI_WAKE_DB", 0, wake_db}, + { "BHI_EXECENV", BHI_EXECENV, bhi_base}, + { "BHI_STATUS", BHI_STATUS, bhi_base}, + { "BHI_ERRCODE", BHI_ERRCODE, bhi_base}, + { "BHI_ERRDBG1", BHI_ERRDBG1, bhi_base}, + { "BHI_ERRDBG2", BHI_ERRDBG2, bhi_base}, + { "BHI_ERRDBG3", BHI_ERRDBG3, bhi_base}, + { "BHIE_TXVEC_DB", BHIE_TXVECDB_OFFS, bhie_base}, + { "BHIE_TXVEC_STATUS", BHIE_TXVECSTATUS_OFFS, bhie_base}, + { "BHIE_RXVEC_DB", BHIE_RXVECDB_OFFS, bhie_base}, + { "BHIE_RXVEC_STATUS", BHIE_RXVECSTATUS_OFFS, bhie_base}, + { NULL }, + }; + + if (!MHI_REG_ACCESS_VALID(mhi_cntrl->pm_state)) + return ret; + + seq_printf(m, "Host PM state: %s Device state: %s EE: %s\n", + to_mhi_pm_state_str(mhi_cntrl->pm_state), + mhi_state_str(mhi_cntrl->dev_state), + TO_MHI_EXEC_STR(mhi_cntrl->ee)); + + state = mhi_get_mhi_state(mhi_cntrl); + ee = mhi_get_exec_env(mhi_cntrl); + seq_printf(m, "Device EE: %s state: %s\n", TO_MHI_EXEC_STR(ee), + mhi_state_str(state)); + + for (i = 0; regs[i].name; i++) { + if (!regs[i].base) + continue; + ret = mhi_read_reg(mhi_cntrl, regs[i].base, regs[i].offset, + &val); + if (ret) + continue; + + seq_printf(m, "%s: 0x%x\n", regs[i].name, val); + } + + return 0; +} + +static int mhi_debugfs_device_wake_show(struct seq_file *m, void *d) +{ + struct mhi_controller *mhi_cntrl = m->private; + struct mhi_device *mhi_dev = mhi_cntrl->mhi_dev; + + if (!mhi_is_active(mhi_cntrl)) { + seq_puts(m, "Device not ready\n"); + return -ENODEV; + } + + seq_printf(m, + "Wake count: %d\n%s\n", mhi_dev->dev_wake, + "Usage: echo get/put > device_wake to vote/unvote for M0"); + + return 0; +} + +static ssize_t mhi_debugfs_device_wake_write(struct file *file, + const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct seq_file *m = file->private_data; + struct mhi_controller *mhi_cntrl = m->private; + struct mhi_device *mhi_dev = mhi_cntrl->mhi_dev; + char buf[16]; + int ret = -EINVAL; + + if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) + return -EFAULT; + + if (!strncmp(buf, "get", 3)) { + ret = mhi_device_get_sync(mhi_dev); + } else if (!strncmp(buf, "put", 3)) { + mhi_device_put(mhi_dev); + ret = 0; + } + + return ret ? ret : count; +} + +static int mhi_debugfs_timeout_ms_show(struct seq_file *m, void *d) +{ + struct mhi_controller *mhi_cntrl = m->private; + + seq_printf(m, "%u ms\n", mhi_cntrl->timeout_ms); + + return 0; +} + +static ssize_t mhi_debugfs_timeout_ms_write(struct file *file, + const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct seq_file *m = file->private_data; + struct mhi_controller *mhi_cntrl = m->private; + u32 timeout_ms; + + if (kstrtou32_from_user(ubuf, count, 0, &timeout_ms)) + return -EINVAL; + + mhi_cntrl->timeout_ms = timeout_ms; + + return count; +} + +static int mhi_debugfs_states_open(struct inode *inode, struct file *fp) +{ + return single_open(fp, mhi_debugfs_states_show, inode->i_private); +} + +static int mhi_debugfs_events_open(struct inode *inode, struct file *fp) +{ + return single_open(fp, mhi_debugfs_events_show, inode->i_private); +} + +static int mhi_debugfs_channels_open(struct inode *inode, struct file *fp) +{ + return single_open(fp, mhi_debugfs_channels_show, inode->i_private); +} + +static int mhi_debugfs_devices_open(struct inode *inode, struct file *fp) +{ + return single_open(fp, mhi_debugfs_devices_show, inode->i_private); +} + +static int mhi_debugfs_regdump_open(struct inode *inode, struct file *fp) +{ + return single_open(fp, mhi_debugfs_regdump_show, inode->i_private); +} + +static int mhi_debugfs_device_wake_open(struct inode *inode, struct file *fp) +{ + return single_open(fp, mhi_debugfs_device_wake_show, inode->i_private); +} + +static int mhi_debugfs_timeout_ms_open(struct inode *inode, struct file *fp) +{ + return single_open(fp, mhi_debugfs_timeout_ms_show, inode->i_private); +} + +static const struct file_operations debugfs_states_fops = { + .open = mhi_debugfs_states_open, + .release = single_release, + .read = seq_read, +}; + +static const struct file_operations debugfs_events_fops = { + .open = mhi_debugfs_events_open, + .release = single_release, + .read = seq_read, +}; + +static const struct file_operations debugfs_channels_fops = { + .open = mhi_debugfs_channels_open, + .release = single_release, + .read = seq_read, +}; + +static const struct file_operations debugfs_devices_fops = { + .open = mhi_debugfs_devices_open, + .release = single_release, + .read = seq_read, +}; + +static const struct file_operations debugfs_regdump_fops = { + .open = mhi_debugfs_regdump_open, + .release = single_release, + .read = seq_read, +}; + +static const struct file_operations debugfs_device_wake_fops = { + .open = mhi_debugfs_device_wake_open, + .write = mhi_debugfs_device_wake_write, + .release = single_release, + .read = seq_read, +}; + +static const struct file_operations debugfs_timeout_ms_fops = { + .open = mhi_debugfs_timeout_ms_open, + .write = mhi_debugfs_timeout_ms_write, + .release = single_release, + .read = seq_read, +}; + +static struct dentry *mhi_debugfs_root; + +void mhi_create_debugfs(struct mhi_controller *mhi_cntrl) +{ + mhi_cntrl->debugfs_dentry = + debugfs_create_dir(dev_name(&mhi_cntrl->mhi_dev->dev), + mhi_debugfs_root); + + debugfs_create_file("states", 0444, mhi_cntrl->debugfs_dentry, + mhi_cntrl, &debugfs_states_fops); + debugfs_create_file("events", 0444, mhi_cntrl->debugfs_dentry, + mhi_cntrl, &debugfs_events_fops); + debugfs_create_file("channels", 0444, mhi_cntrl->debugfs_dentry, + mhi_cntrl, &debugfs_channels_fops); + debugfs_create_file("devices", 0444, mhi_cntrl->debugfs_dentry, + mhi_cntrl, &debugfs_devices_fops); + debugfs_create_file("regdump", 0444, mhi_cntrl->debugfs_dentry, + mhi_cntrl, &debugfs_regdump_fops); + debugfs_create_file("device_wake", 0644, mhi_cntrl->debugfs_dentry, + mhi_cntrl, &debugfs_device_wake_fops); + debugfs_create_file("timeout_ms", 0644, mhi_cntrl->debugfs_dentry, + mhi_cntrl, &debugfs_timeout_ms_fops); +} + +void mhi_destroy_debugfs(struct mhi_controller *mhi_cntrl) +{ + debugfs_remove_recursive(mhi_cntrl->debugfs_dentry); + mhi_cntrl->debugfs_dentry = NULL; +} + +void mhi_debugfs_init(void) +{ + mhi_debugfs_root = debugfs_create_dir(mhi_bus_type.name, NULL); +} + +void mhi_debugfs_exit(void) +{ + debugfs_remove_recursive(mhi_debugfs_root); +} -- cgit v1.2.3