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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/phy/renesas/phy-rcar-gen3-usb3.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
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().
...
Diffstat (limited to 'drivers/phy/renesas/phy-rcar-gen3-usb3.c')
-rw-r--r-- | drivers/phy/renesas/phy-rcar-gen3-usb3.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb3.c b/drivers/phy/renesas/phy-rcar-gen3-usb3.c new file mode 100644 index 000000000..f27d6f471 --- /dev/null +++ b/drivers/phy/renesas/phy-rcar-gen3-usb3.c @@ -0,0 +1,221 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Renesas R-Car Gen3 for USB3.0 PHY driver + * + * Copyright (C) 2017 Renesas Electronics Corporation + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> + +#define USB30_CLKSET0 0x034 +#define USB30_CLKSET1 0x036 +#define USB30_SSC_SET 0x038 +#define USB30_PHY_ENABLE 0x060 +#define USB30_VBUS_EN 0x064 + +/* USB30_CLKSET0 */ +#define CLKSET0_PRIVATE 0x05c0 +#define CLKSET0_USB30_FSEL_USB_EXTAL 0x0002 + +/* USB30_CLKSET1 */ +#define CLKSET1_USB30_PLL_MULTI_SHIFT 6 +#define CLKSET1_USB30_PLL_MULTI_USB_EXTAL (0x64 << \ + CLKSET1_USB30_PLL_MULTI_SHIFT) +#define CLKSET1_PHYRESET BIT(4) /* 1: reset */ +#define CLKSET1_REF_CLKDIV BIT(3) /* 1: USB_EXTAL */ +#define CLKSET1_PRIVATE_2_1 BIT(1) /* Write B'01 */ +#define CLKSET1_REF_CLK_SEL BIT(0) /* 1: USB3S0_CLK_P */ + +/* USB30_SSC_SET */ +#define SSC_SET_SSC_EN BIT(12) +#define SSC_SET_RANGE_SHIFT 9 +#define SSC_SET_RANGE_4980 (0x0 << SSC_SET_RANGE_SHIFT) +#define SSC_SET_RANGE_4492 (0x1 << SSC_SET_RANGE_SHIFT) +#define SSC_SET_RANGE_4003 (0x2 << SSC_SET_RANGE_SHIFT) + +/* USB30_PHY_ENABLE */ +#define PHY_ENABLE_RESET_EN BIT(4) + +/* USB30_VBUS_EN */ +#define VBUS_EN_VBUS_EN BIT(1) + +struct rcar_gen3_usb3 { + void __iomem *base; + struct phy *phy; + u32 ssc_range; + bool usb3s_clk; + bool usb_extal; +}; + +static void write_clkset1_for_usb_extal(struct rcar_gen3_usb3 *r, bool reset) +{ + u16 val = CLKSET1_USB30_PLL_MULTI_USB_EXTAL | + CLKSET1_REF_CLKDIV | CLKSET1_PRIVATE_2_1; + + if (reset) + val |= CLKSET1_PHYRESET; + + writew(val, r->base + USB30_CLKSET1); +} + +static void rcar_gen3_phy_usb3_enable_ssc(struct rcar_gen3_usb3 *r) +{ + u16 val = SSC_SET_SSC_EN; + + switch (r->ssc_range) { + case 4980: + val |= SSC_SET_RANGE_4980; + break; + case 4492: + val |= SSC_SET_RANGE_4492; + break; + case 4003: + val |= SSC_SET_RANGE_4003; + break; + default: + dev_err(&r->phy->dev, "%s: unsupported range (%x)\n", __func__, + r->ssc_range); + return; + } + + writew(val, r->base + USB30_SSC_SET); +} + +static void rcar_gen3_phy_usb3_select_usb_extal(struct rcar_gen3_usb3 *r) +{ + write_clkset1_for_usb_extal(r, false); + if (r->ssc_range) + rcar_gen3_phy_usb3_enable_ssc(r); + writew(CLKSET0_PRIVATE | CLKSET0_USB30_FSEL_USB_EXTAL, + r->base + USB30_CLKSET0); + writew(PHY_ENABLE_RESET_EN, r->base + USB30_PHY_ENABLE); + write_clkset1_for_usb_extal(r, true); + usleep_range(10, 20); + write_clkset1_for_usb_extal(r, false); +} + +static int rcar_gen3_phy_usb3_init(struct phy *p) +{ + struct rcar_gen3_usb3 *r = phy_get_drvdata(p); + + dev_vdbg(&r->phy->dev, "%s: enter (%d, %d, %d)\n", __func__, + r->usb3s_clk, r->usb_extal, r->ssc_range); + + if (!r->usb3s_clk && r->usb_extal) + rcar_gen3_phy_usb3_select_usb_extal(r); + + /* Enables VBUS detection anyway */ + writew(VBUS_EN_VBUS_EN, r->base + USB30_VBUS_EN); + + return 0; +} + +static const struct phy_ops rcar_gen3_phy_usb3_ops = { + .init = rcar_gen3_phy_usb3_init, + .owner = THIS_MODULE, +}; + +static const struct of_device_id rcar_gen3_phy_usb3_match_table[] = { + { .compatible = "renesas,rcar-gen3-usb3-phy" }, + { } +}; +MODULE_DEVICE_TABLE(of, rcar_gen3_phy_usb3_match_table); + +static int rcar_gen3_phy_usb3_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct rcar_gen3_usb3 *r; + struct phy_provider *provider; + int ret = 0; + struct clk *clk; + + if (!dev->of_node) { + dev_err(dev, "This driver needs device tree\n"); + return -EINVAL; + } + + r = devm_kzalloc(dev, sizeof(*r), GFP_KERNEL); + if (!r) + return -ENOMEM; + + r->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(r->base)) + return PTR_ERR(r->base); + + clk = devm_clk_get(dev, "usb3s_clk"); + if (!IS_ERR(clk) && !clk_prepare_enable(clk)) { + r->usb3s_clk = !!clk_get_rate(clk); + clk_disable_unprepare(clk); + } + clk = devm_clk_get(dev, "usb_extal"); + if (!IS_ERR(clk) && !clk_prepare_enable(clk)) { + r->usb_extal = !!clk_get_rate(clk); + clk_disable_unprepare(clk); + } + + if (!r->usb3s_clk && !r->usb_extal) { + dev_err(dev, "This driver needs usb3s_clk and/or usb_extal\n"); + ret = -EINVAL; + goto error; + } + + /* + * devm_phy_create() will call pm_runtime_enable(&phy->dev); + * And then, phy-core will manage runtime pm for this device. + */ + pm_runtime_enable(dev); + + r->phy = devm_phy_create(dev, NULL, &rcar_gen3_phy_usb3_ops); + if (IS_ERR(r->phy)) { + dev_err(dev, "Failed to create USB3 PHY\n"); + ret = PTR_ERR(r->phy); + goto error; + } + + of_property_read_u32(dev->of_node, "renesas,ssc-range", &r->ssc_range); + + platform_set_drvdata(pdev, r); + phy_set_drvdata(r->phy, r); + + provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (IS_ERR(provider)) { + dev_err(dev, "Failed to register PHY provider\n"); + ret = PTR_ERR(provider); + goto error; + } + + return 0; + +error: + pm_runtime_disable(dev); + + return ret; +} + +static int rcar_gen3_phy_usb3_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); + + return 0; +}; + +static struct platform_driver rcar_gen3_phy_usb3_driver = { + .driver = { + .name = "phy_rcar_gen3_usb3", + .of_match_table = rcar_gen3_phy_usb3_match_table, + }, + .probe = rcar_gen3_phy_usb3_probe, + .remove = rcar_gen3_phy_usb3_remove, +}; +module_platform_driver(rcar_gen3_phy_usb3_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Renesas R-Car Gen3 USB 3.0 PHY"); +MODULE_AUTHOR("Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>"); |