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/usb/mtu3/mtu3_plat.c | 627 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 627 insertions(+) create mode 100644 drivers/usb/mtu3/mtu3_plat.c (limited to 'drivers/usb/mtu3/mtu3_plat.c') diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c new file mode 100644 index 000000000..d78ae52b4 --- /dev/null +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -0,0 +1,627 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2016 MediaTek Inc. + * + * Author: Chunfeng Yun + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "mtu3.h" +#include "mtu3_dr.h" +#include "mtu3_debug.h" + +/* u2-port0 should be powered on and enabled; */ +int ssusb_check_clocks(struct ssusb_mtk *ssusb, u32 ex_clks) +{ + void __iomem *ibase = ssusb->ippc_base; + u32 value, check_val; + int ret; + + check_val = ex_clks | SSUSB_SYS125_RST_B_STS | SSUSB_SYSPLL_STABLE | + SSUSB_REF_RST_B_STS; + + ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS1, value, + (check_val == (value & check_val)), 100, 20000); + if (ret) { + dev_err(ssusb->dev, "clks of sts1 are not stable!\n"); + return ret; + } + + ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS2, value, + (value & SSUSB_U2_MAC_SYS_RST_B_STS), 100, 10000); + if (ret) { + dev_err(ssusb->dev, "mac2 clock is not stable\n"); + return ret; + } + + return 0; +} + +static int wait_for_ip_sleep(struct ssusb_mtk *ssusb) +{ + bool sleep_check = true; + u32 value; + int ret; + + if (!ssusb->is_host) + sleep_check = ssusb_gadget_ip_sleep_check(ssusb); + + if (!sleep_check) + return 0; + + /* wait for ip enter sleep mode */ + ret = readl_poll_timeout(ssusb->ippc_base + U3D_SSUSB_IP_PW_STS1, value, + (value & SSUSB_IP_SLEEP_STS), 100, 100000); + if (ret) { + dev_err(ssusb->dev, "ip sleep failed!!!\n"); + ret = -EBUSY; + } else { + /* workaround: avoid wrong wakeup signal latch for some soc */ + usleep_range(100, 200); + } + + return ret; +} + +static int ssusb_phy_init(struct ssusb_mtk *ssusb) +{ + int i; + int ret; + + for (i = 0; i < ssusb->num_phys; i++) { + ret = phy_init(ssusb->phys[i]); + if (ret) + goto exit_phy; + } + return 0; + +exit_phy: + for (; i > 0; i--) + phy_exit(ssusb->phys[i - 1]); + + return ret; +} + +static int ssusb_phy_exit(struct ssusb_mtk *ssusb) +{ + int i; + + for (i = 0; i < ssusb->num_phys; i++) + phy_exit(ssusb->phys[i]); + + return 0; +} + +static int ssusb_phy_power_on(struct ssusb_mtk *ssusb) +{ + int i; + int ret; + + for (i = 0; i < ssusb->num_phys; i++) { + ret = phy_power_on(ssusb->phys[i]); + if (ret) + goto power_off_phy; + } + return 0; + +power_off_phy: + for (; i > 0; i--) + phy_power_off(ssusb->phys[i - 1]); + + return ret; +} + +static void ssusb_phy_power_off(struct ssusb_mtk *ssusb) +{ + unsigned int i; + + for (i = 0; i < ssusb->num_phys; i++) + phy_power_off(ssusb->phys[i]); +} + +static int ssusb_rscs_init(struct ssusb_mtk *ssusb) +{ + int ret = 0; + + ret = regulator_enable(ssusb->vusb33); + if (ret) { + dev_err(ssusb->dev, "failed to enable vusb33\n"); + goto vusb33_err; + } + + ret = clk_bulk_prepare_enable(BULK_CLKS_CNT, ssusb->clks); + if (ret) + goto clks_err; + + ret = ssusb_phy_init(ssusb); + if (ret) { + dev_err(ssusb->dev, "failed to init phy\n"); + goto phy_init_err; + } + + ret = ssusb_phy_power_on(ssusb); + if (ret) { + dev_err(ssusb->dev, "failed to power on phy\n"); + goto phy_err; + } + + return 0; + +phy_err: + ssusb_phy_exit(ssusb); +phy_init_err: + clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks); +clks_err: + regulator_disable(ssusb->vusb33); +vusb33_err: + return ret; +} + +static void ssusb_rscs_exit(struct ssusb_mtk *ssusb) +{ + clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks); + regulator_disable(ssusb->vusb33); + ssusb_phy_power_off(ssusb); + ssusb_phy_exit(ssusb); +} + +static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb) +{ + /* reset whole ip (xhci & u3d) */ + mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); + udelay(1); + mtu3_clrbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL0, SSUSB_IP_SW_RST); + + /* + * device ip may be powered on in firmware/BROM stage before entering + * kernel stage; + * power down device ip, otherwise ip-sleep will fail when working as + * host only mode + */ + mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); +} + +static void ssusb_u3_drd_check(struct ssusb_mtk *ssusb) +{ + struct otg_switch_mtk *otg_sx = &ssusb->otg_switch; + u32 dev_u3p_num; + u32 host_u3p_num; + u32 value; + + /* u3 port0 is disabled */ + if (ssusb->u3p_dis_msk & BIT(0)) { + otg_sx->is_u3_drd = false; + goto out; + } + + value = mtu3_readl(ssusb->ippc_base, U3D_SSUSB_IP_DEV_CAP); + dev_u3p_num = SSUSB_IP_DEV_U3_PORT_NUM(value); + + value = mtu3_readl(ssusb->ippc_base, U3D_SSUSB_IP_XHCI_CAP); + host_u3p_num = SSUSB_IP_XHCI_U3_PORT_NUM(value); + + otg_sx->is_u3_drd = !!(dev_u3p_num && host_u3p_num); + +out: + dev_info(ssusb->dev, "usb3-drd: %d\n", otg_sx->is_u3_drd); +} + +static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) +{ + struct device_node *node = pdev->dev.of_node; + struct otg_switch_mtk *otg_sx = &ssusb->otg_switch; + struct clk_bulk_data *clks = ssusb->clks; + struct device *dev = &pdev->dev; + int i; + int ret; + + ssusb->vusb33 = devm_regulator_get(dev, "vusb33"); + if (IS_ERR(ssusb->vusb33)) { + dev_err(dev, "failed to get vusb33\n"); + return PTR_ERR(ssusb->vusb33); + } + + clks[0].id = "sys_ck"; + clks[1].id = "ref_ck"; + clks[2].id = "mcu_ck"; + clks[3].id = "dma_ck"; + ret = devm_clk_bulk_get_optional(dev, BULK_CLKS_CNT, clks); + if (ret) + return ret; + + ssusb->num_phys = of_count_phandle_with_args(node, + "phys", "#phy-cells"); + if (ssusb->num_phys > 0) { + ssusb->phys = devm_kcalloc(dev, ssusb->num_phys, + sizeof(*ssusb->phys), GFP_KERNEL); + if (!ssusb->phys) + return -ENOMEM; + } else { + ssusb->num_phys = 0; + } + + for (i = 0; i < ssusb->num_phys; i++) { + ssusb->phys[i] = devm_of_phy_get_by_index(dev, node, i); + if (IS_ERR(ssusb->phys[i])) { + dev_err(dev, "failed to get phy-%d\n", i); + return PTR_ERR(ssusb->phys[i]); + } + } + + ssusb->ippc_base = devm_platform_ioremap_resource_byname(pdev, "ippc"); + if (IS_ERR(ssusb->ippc_base)) + return PTR_ERR(ssusb->ippc_base); + + ssusb->wakeup_irq = platform_get_irq_byname_optional(pdev, "wakeup"); + if (ssusb->wakeup_irq == -EPROBE_DEFER) + return ssusb->wakeup_irq; + + ssusb->dr_mode = usb_get_dr_mode(dev); + if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN) + ssusb->dr_mode = USB_DR_MODE_OTG; + + of_property_read_u32(node, "mediatek,u3p-dis-msk", &ssusb->u3p_dis_msk); + + if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL) + goto out; + + /* if host role is supported */ + ret = ssusb_wakeup_of_property_parse(ssusb, node); + if (ret) { + dev_err(dev, "failed to parse uwk property\n"); + return ret; + } + + /* optional property, ignore the error if it does not exist */ + of_property_read_u32(node, "mediatek,u2p-dis-msk", + &ssusb->u2p_dis_msk); + + otg_sx->vbus = devm_regulator_get(dev, "vbus"); + if (IS_ERR(otg_sx->vbus)) { + dev_err(dev, "failed to get vbus\n"); + return PTR_ERR(otg_sx->vbus); + } + + if (ssusb->dr_mode == USB_DR_MODE_HOST) + goto out; + + /* if dual-role mode is supported */ + otg_sx->manual_drd_enabled = + of_property_read_bool(node, "enable-manual-drd"); + otg_sx->role_sw_used = of_property_read_bool(node, "usb-role-switch"); + + /* can't disable port0 when use dual-role mode */ + ssusb->u2p_dis_msk &= ~0x1; + + if (otg_sx->role_sw_used || otg_sx->manual_drd_enabled) + goto out; + + if (of_property_read_bool(node, "extcon")) { + otg_sx->edev = extcon_get_edev_by_phandle(ssusb->dev, 0); + if (IS_ERR(otg_sx->edev)) { + return dev_err_probe(dev, PTR_ERR(otg_sx->edev), + "couldn't get extcon device\n"); + } + } + +out: + dev_info(dev, "dr_mode: %d, drd: %s\n", ssusb->dr_mode, + otg_sx->manual_drd_enabled ? "manual" : "auto"); + dev_info(dev, "u2p_dis_msk: %x, u3p_dis_msk: %x\n", + ssusb->u2p_dis_msk, ssusb->u3p_dis_msk); + + return 0; +} + +static int mtu3_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct ssusb_mtk *ssusb; + int ret = -ENOMEM; + + /* all elements are set to ZERO as default value */ + ssusb = devm_kzalloc(dev, sizeof(*ssusb), GFP_KERNEL); + if (!ssusb) + return -ENOMEM; + + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); + if (ret) { + dev_err(dev, "No suitable DMA config available\n"); + return -ENOTSUPP; + } + + platform_set_drvdata(pdev, ssusb); + ssusb->dev = dev; + + ret = get_ssusb_rscs(pdev, ssusb); + if (ret) + return ret; + + ssusb_debugfs_create_root(ssusb); + + /* enable power domain */ + pm_runtime_set_active(dev); + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, 4000); + pm_runtime_enable(dev); + pm_runtime_get_sync(dev); + + device_init_wakeup(dev, true); + + ret = ssusb_rscs_init(ssusb); + if (ret) + goto comm_init_err; + + if (ssusb->wakeup_irq > 0) { + ret = dev_pm_set_dedicated_wake_irq_reverse(dev, ssusb->wakeup_irq); + if (ret) { + dev_err(dev, "failed to set wakeup irq %d\n", ssusb->wakeup_irq); + goto comm_exit; + } + dev_info(dev, "wakeup irq %d\n", ssusb->wakeup_irq); + } + + ret = device_reset_optional(dev); + if (ret) { + dev_err_probe(dev, ret, "failed to reset controller\n"); + goto comm_exit; + } + + ssusb_ip_sw_reset(ssusb); + ssusb_u3_drd_check(ssusb); + + if (IS_ENABLED(CONFIG_USB_MTU3_HOST)) + ssusb->dr_mode = USB_DR_MODE_HOST; + else if (IS_ENABLED(CONFIG_USB_MTU3_GADGET)) + ssusb->dr_mode = USB_DR_MODE_PERIPHERAL; + + /* default as host */ + ssusb->is_host = !(ssusb->dr_mode == USB_DR_MODE_PERIPHERAL); + + switch (ssusb->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + ret = ssusb_gadget_init(ssusb); + if (ret) { + dev_err(dev, "failed to initialize gadget\n"); + goto comm_exit; + } + break; + case USB_DR_MODE_HOST: + ret = ssusb_host_init(ssusb, node); + if (ret) { + dev_err(dev, "failed to initialize host\n"); + goto comm_exit; + } + break; + case USB_DR_MODE_OTG: + ret = ssusb_gadget_init(ssusb); + if (ret) { + dev_err(dev, "failed to initialize gadget\n"); + goto comm_exit; + } + + ret = ssusb_host_init(ssusb, node); + if (ret) { + dev_err(dev, "failed to initialize host\n"); + goto gadget_exit; + } + + ret = ssusb_otg_switch_init(ssusb); + if (ret) { + dev_err(dev, "failed to initialize switch\n"); + goto host_exit; + } + break; + default: + dev_err(dev, "unsupported mode: %d\n", ssusb->dr_mode); + ret = -EINVAL; + goto comm_exit; + } + + device_enable_async_suspend(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); + pm_runtime_forbid(dev); + + return 0; + +host_exit: + ssusb_host_exit(ssusb); +gadget_exit: + ssusb_gadget_exit(ssusb); +comm_exit: + ssusb_rscs_exit(ssusb); +comm_init_err: + pm_runtime_put_noidle(dev); + pm_runtime_disable(dev); + ssusb_debugfs_remove_root(ssusb); + + return ret; +} + +static int mtu3_remove(struct platform_device *pdev) +{ + struct ssusb_mtk *ssusb = platform_get_drvdata(pdev); + + pm_runtime_get_sync(&pdev->dev); + + switch (ssusb->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + ssusb_gadget_exit(ssusb); + break; + case USB_DR_MODE_HOST: + ssusb_host_exit(ssusb); + break; + case USB_DR_MODE_OTG: + ssusb_otg_switch_exit(ssusb); + ssusb_gadget_exit(ssusb); + ssusb_host_exit(ssusb); + break; + default: + return -EINVAL; + } + + ssusb_rscs_exit(ssusb); + ssusb_debugfs_remove_root(ssusb); + pm_runtime_disable(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); + pm_runtime_set_suspended(&pdev->dev); + + return 0; +} + +static int resume_ip_and_ports(struct ssusb_mtk *ssusb, pm_message_t msg) +{ + switch (ssusb->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + ssusb_gadget_resume(ssusb, msg); + break; + case USB_DR_MODE_HOST: + ssusb_host_resume(ssusb, false); + break; + case USB_DR_MODE_OTG: + ssusb_host_resume(ssusb, !ssusb->is_host); + if (!ssusb->is_host) + ssusb_gadget_resume(ssusb, msg); + + break; + default: + return -EINVAL; + } + + return 0; +} + +static int mtu3_suspend_common(struct device *dev, pm_message_t msg) +{ + struct ssusb_mtk *ssusb = dev_get_drvdata(dev); + int ret = 0; + + dev_dbg(dev, "%s\n", __func__); + + switch (ssusb->dr_mode) { + case USB_DR_MODE_PERIPHERAL: + ret = ssusb_gadget_suspend(ssusb, msg); + if (ret) + goto err; + + break; + case USB_DR_MODE_HOST: + ssusb_host_suspend(ssusb); + break; + case USB_DR_MODE_OTG: + if (!ssusb->is_host) { + ret = ssusb_gadget_suspend(ssusb, msg); + if (ret) + goto err; + } + ssusb_host_suspend(ssusb); + break; + default: + return -EINVAL; + } + + ret = wait_for_ip_sleep(ssusb); + if (ret) + goto sleep_err; + + ssusb_phy_power_off(ssusb); + clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks); + ssusb_wakeup_set(ssusb, true); + return 0; + +sleep_err: + resume_ip_and_ports(ssusb, msg); +err: + return ret; +} + +static int mtu3_resume_common(struct device *dev, pm_message_t msg) +{ + struct ssusb_mtk *ssusb = dev_get_drvdata(dev); + int ret; + + dev_dbg(dev, "%s\n", __func__); + + ssusb_wakeup_set(ssusb, false); + ret = clk_bulk_prepare_enable(BULK_CLKS_CNT, ssusb->clks); + if (ret) + goto clks_err; + + ret = ssusb_phy_power_on(ssusb); + if (ret) + goto phy_err; + + return resume_ip_and_ports(ssusb, msg); + +phy_err: + clk_bulk_disable_unprepare(BULK_CLKS_CNT, ssusb->clks); +clks_err: + return ret; +} + +static int __maybe_unused mtu3_suspend(struct device *dev) +{ + return mtu3_suspend_common(dev, PMSG_SUSPEND); +} + +static int __maybe_unused mtu3_resume(struct device *dev) +{ + return mtu3_resume_common(dev, PMSG_SUSPEND); +} + +static int __maybe_unused mtu3_runtime_suspend(struct device *dev) +{ + if (!device_may_wakeup(dev)) + return 0; + + return mtu3_suspend_common(dev, PMSG_AUTO_SUSPEND); +} + +static int __maybe_unused mtu3_runtime_resume(struct device *dev) +{ + if (!device_may_wakeup(dev)) + return 0; + + return mtu3_resume_common(dev, PMSG_AUTO_SUSPEND); +} + +static const struct dev_pm_ops mtu3_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mtu3_suspend, mtu3_resume) + SET_RUNTIME_PM_OPS(mtu3_runtime_suspend, + mtu3_runtime_resume, NULL) +}; + +#define DEV_PM_OPS (IS_ENABLED(CONFIG_PM) ? &mtu3_pm_ops : NULL) + +static const struct of_device_id mtu3_of_match[] = { + {.compatible = "mediatek,mt8173-mtu3",}, + {.compatible = "mediatek,mtu3",}, + {}, +}; +MODULE_DEVICE_TABLE(of, mtu3_of_match); + +static struct platform_driver mtu3_driver = { + .probe = mtu3_probe, + .remove = mtu3_remove, + .driver = { + .name = MTU3_DRIVER_NAME, + .pm = DEV_PM_OPS, + .of_match_table = mtu3_of_match, + }, +}; +module_platform_driver(mtu3_driver); + +MODULE_AUTHOR("Chunfeng Yun "); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("MediaTek USB3 DRD Controller Driver"); -- cgit v1.2.3