diff options
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/broadcom/phy-bcm63xx-usbh.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/broadcom/phy-bcm63xx-usbh.c')
-rw-r--r-- | drivers/phy/broadcom/phy-bcm63xx-usbh.c | 457 |
1 files changed, 457 insertions, 0 deletions
diff --git a/drivers/phy/broadcom/phy-bcm63xx-usbh.c b/drivers/phy/broadcom/phy-bcm63xx-usbh.c new file mode 100644 index 000000000..6c05ba8b0 --- /dev/null +++ b/drivers/phy/broadcom/phy-bcm63xx-usbh.c @@ -0,0 +1,457 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * BCM6328 USBH PHY Controller Driver + * + * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com> + * Copyright (C) 2015 Simon Arlott + * + * Derived from bcm963xx_4.12L.06B_consumer/kernel/linux/arch/mips/bcm963xx/setup.c: + * Copyright (C) 2002 Broadcom Corporation + * + * Derived from OpenWrt patches: + * Copyright (C) 2013 Jonas Gorski <jonas.gorski@gmail.com> + * Copyright (C) 2013 Florian Fainelli <f.fainelli@gmail.com> + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + */ + +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/reset.h> + +/* USBH control register offsets */ +enum usbh_regs { + USBH_BRT_CONTROL1 = 0, + USBH_BRT_CONTROL2, + USBH_BRT_STATUS1, + USBH_BRT_STATUS2, + USBH_UTMI_CONTROL1, +#define USBH_UC1_DEV_MODE_SEL BIT(0) + USBH_TEST_PORT_CONTROL, + USBH_PLL_CONTROL1, +#define USBH_PLLC_REFCLKSEL_SHIFT 0 +#define USBH_PLLC_REFCLKSEL_MASK (0x3 << USBH_PLLC_REFCLKSEL_SHIFT) +#define USBH_PLLC_CLKSEL_SHIFT 2 +#define USBH_PLLC_CLKSEL_MASK (0x3 << USBH_PLLC_CLKSEL_MASK) +#define USBH_PLLC_XTAL_PWRDWNB BIT(4) +#define USBH_PLLC_PLL_PWRDWNB BIT(5) +#define USBH_PLLC_PLL_CALEN BIT(6) +#define USBH_PLLC_PHYPLL_BYP BIT(7) +#define USBH_PLLC_PLL_RESET BIT(8) +#define USBH_PLLC_PLL_IDDQ_PWRDN BIT(9) +#define USBH_PLLC_PLL_PWRDN_DELAY BIT(10) +#define USBH_6318_PLLC_PLL_SUSPEND_EN BIT(27) +#define USBH_6318_PLLC_PHYPLL_BYP BIT(29) +#define USBH_6318_PLLC_PLL_RESET BIT(30) +#define USBH_6318_PLLC_PLL_IDDQ_PWRDN BIT(31) + USBH_SWAP_CONTROL, +#define USBH_SC_OHCI_DATA_SWAP BIT(0) +#define USBH_SC_OHCI_ENDIAN_SWAP BIT(1) +#define USBH_SC_OHCI_LOGICAL_ADDR_EN BIT(2) +#define USBH_SC_EHCI_DATA_SWAP BIT(3) +#define USBH_SC_EHCI_ENDIAN_SWAP BIT(4) +#define USBH_SC_EHCI_LOGICAL_ADDR_EN BIT(5) +#define USBH_SC_USB_DEVICE_SEL BIT(6) + USBH_GENERIC_CONTROL, +#define USBH_GC_PLL_SUSPEND_EN BIT(1) + USBH_FRAME_ADJUST_VALUE, + USBH_SETUP, +#define USBH_S_IOC BIT(4) +#define USBH_S_IPP BIT(5) + USBH_MDIO, + USBH_MDIO32, + USBH_USB_SIM_CONTROL, +#define USBH_USC_LADDR_SEL BIT(5) + + __USBH_ENUM_SIZE +}; + +struct bcm63xx_usbh_phy_variant { + /* Registers */ + long regs[__USBH_ENUM_SIZE]; + + /* PLLC bits to set/clear for power on */ + u32 power_pllc_clr; + u32 power_pllc_set; + + /* Setup bits to set/clear for power on */ + u32 setup_clr; + u32 setup_set; + + /* Swap Control bits to set */ + u32 swapctl_dev_set; + + /* Test Port Control value to set if non-zero */ + u32 tpc_val; + + /* USB Sim Control bits to set */ + u32 usc_set; + + /* UTMI Control 1 bits to set */ + u32 utmictl1_dev_set; +}; + +struct bcm63xx_usbh_phy { + void __iomem *base; + struct clk *usbh_clk; + struct clk *usb_ref_clk; + struct reset_control *reset; + const struct bcm63xx_usbh_phy_variant *variant; + bool device_mode; +}; + +static const struct bcm63xx_usbh_phy_variant usbh_bcm6318 = { + .regs = { + [USBH_BRT_CONTROL1] = -1, + [USBH_BRT_CONTROL2] = -1, + [USBH_BRT_STATUS1] = -1, + [USBH_BRT_STATUS2] = -1, + [USBH_UTMI_CONTROL1] = 0x2c, + [USBH_TEST_PORT_CONTROL] = 0x1c, + [USBH_PLL_CONTROL1] = 0x04, + [USBH_SWAP_CONTROL] = 0x0c, + [USBH_GENERIC_CONTROL] = -1, + [USBH_FRAME_ADJUST_VALUE] = 0x08, + [USBH_SETUP] = 0x00, + [USBH_MDIO] = 0x14, + [USBH_MDIO32] = 0x18, + [USBH_USB_SIM_CONTROL] = 0x20, + }, + .power_pllc_clr = USBH_6318_PLLC_PLL_IDDQ_PWRDN, + .power_pllc_set = USBH_6318_PLLC_PLL_SUSPEND_EN, + .setup_set = USBH_S_IOC, + .swapctl_dev_set = USBH_SC_USB_DEVICE_SEL, + .usc_set = USBH_USC_LADDR_SEL, + .utmictl1_dev_set = USBH_UC1_DEV_MODE_SEL, +}; + +static const struct bcm63xx_usbh_phy_variant usbh_bcm6328 = { + .regs = { + [USBH_BRT_CONTROL1] = 0x00, + [USBH_BRT_CONTROL2] = 0x04, + [USBH_BRT_STATUS1] = 0x08, + [USBH_BRT_STATUS2] = 0x0c, + [USBH_UTMI_CONTROL1] = 0x10, + [USBH_TEST_PORT_CONTROL] = 0x14, + [USBH_PLL_CONTROL1] = 0x18, + [USBH_SWAP_CONTROL] = 0x1c, + [USBH_GENERIC_CONTROL] = 0x20, + [USBH_FRAME_ADJUST_VALUE] = 0x24, + [USBH_SETUP] = 0x28, + [USBH_MDIO] = 0x2c, + [USBH_MDIO32] = 0x30, + [USBH_USB_SIM_CONTROL] = 0x34, + }, + .setup_set = USBH_S_IOC, + .swapctl_dev_set = USBH_SC_USB_DEVICE_SEL, + .utmictl1_dev_set = USBH_UC1_DEV_MODE_SEL, +}; + +static const struct bcm63xx_usbh_phy_variant usbh_bcm6358 = { + .regs = { + [USBH_BRT_CONTROL1] = -1, + [USBH_BRT_CONTROL2] = -1, + [USBH_BRT_STATUS1] = -1, + [USBH_BRT_STATUS2] = -1, + [USBH_UTMI_CONTROL1] = -1, + [USBH_TEST_PORT_CONTROL] = 0x24, + [USBH_PLL_CONTROL1] = -1, + [USBH_SWAP_CONTROL] = 0x00, + [USBH_GENERIC_CONTROL] = -1, + [USBH_FRAME_ADJUST_VALUE] = -1, + [USBH_SETUP] = -1, + [USBH_MDIO] = -1, + [USBH_MDIO32] = -1, + [USBH_USB_SIM_CONTROL] = -1, + }, + /* + * The magic value comes for the original vendor BSP + * and is needed for USB to work. Datasheet does not + * help, so the magic value is used as-is. + */ + .tpc_val = 0x1c0020, +}; + +static const struct bcm63xx_usbh_phy_variant usbh_bcm6368 = { + .regs = { + [USBH_BRT_CONTROL1] = 0x00, + [USBH_BRT_CONTROL2] = 0x04, + [USBH_BRT_STATUS1] = 0x08, + [USBH_BRT_STATUS2] = 0x0c, + [USBH_UTMI_CONTROL1] = 0x10, + [USBH_TEST_PORT_CONTROL] = 0x14, + [USBH_PLL_CONTROL1] = 0x18, + [USBH_SWAP_CONTROL] = 0x1c, + [USBH_GENERIC_CONTROL] = -1, + [USBH_FRAME_ADJUST_VALUE] = 0x24, + [USBH_SETUP] = 0x28, + [USBH_MDIO] = 0x2c, + [USBH_MDIO32] = 0x30, + [USBH_USB_SIM_CONTROL] = 0x34, + }, + .power_pllc_clr = USBH_PLLC_PLL_IDDQ_PWRDN | USBH_PLLC_PLL_PWRDN_DELAY, + .setup_set = USBH_S_IOC, + .swapctl_dev_set = USBH_SC_USB_DEVICE_SEL, + .utmictl1_dev_set = USBH_UC1_DEV_MODE_SEL, +}; + +static const struct bcm63xx_usbh_phy_variant usbh_bcm63268 = { + .regs = { + [USBH_BRT_CONTROL1] = 0x00, + [USBH_BRT_CONTROL2] = 0x04, + [USBH_BRT_STATUS1] = 0x08, + [USBH_BRT_STATUS2] = 0x0c, + [USBH_UTMI_CONTROL1] = 0x10, + [USBH_TEST_PORT_CONTROL] = 0x14, + [USBH_PLL_CONTROL1] = 0x18, + [USBH_SWAP_CONTROL] = 0x1c, + [USBH_GENERIC_CONTROL] = 0x20, + [USBH_FRAME_ADJUST_VALUE] = 0x24, + [USBH_SETUP] = 0x28, + [USBH_MDIO] = 0x2c, + [USBH_MDIO32] = 0x30, + [USBH_USB_SIM_CONTROL] = 0x34, + }, + .power_pllc_clr = USBH_PLLC_PLL_IDDQ_PWRDN | USBH_PLLC_PLL_PWRDN_DELAY, + .setup_clr = USBH_S_IPP, + .setup_set = USBH_S_IOC, + .swapctl_dev_set = USBH_SC_USB_DEVICE_SEL, + .utmictl1_dev_set = USBH_UC1_DEV_MODE_SEL, +}; + +static inline bool usbh_has_reg(struct bcm63xx_usbh_phy *usbh, int reg) +{ + return (usbh->variant->regs[reg] >= 0); +} + +static inline u32 usbh_readl(struct bcm63xx_usbh_phy *usbh, int reg) +{ + return __raw_readl(usbh->base + usbh->variant->regs[reg]); +} + +static inline void usbh_writel(struct bcm63xx_usbh_phy *usbh, int reg, + u32 value) +{ + __raw_writel(value, usbh->base + usbh->variant->regs[reg]); +} + +static int bcm63xx_usbh_phy_init(struct phy *phy) +{ + struct bcm63xx_usbh_phy *usbh = phy_get_drvdata(phy); + int ret; + + ret = clk_prepare_enable(usbh->usbh_clk); + if (ret) { + dev_err(&phy->dev, "unable to enable usbh clock: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(usbh->usb_ref_clk); + if (ret) { + dev_err(&phy->dev, "unable to enable usb_ref clock: %d\n", ret); + clk_disable_unprepare(usbh->usbh_clk); + return ret; + } + + ret = reset_control_reset(usbh->reset); + if (ret) { + dev_err(&phy->dev, "unable to reset device: %d\n", ret); + clk_disable_unprepare(usbh->usb_ref_clk); + clk_disable_unprepare(usbh->usbh_clk); + return ret; + } + + /* Configure to work in native CPU endian */ + if (usbh_has_reg(usbh, USBH_SWAP_CONTROL)) { + u32 val = usbh_readl(usbh, USBH_SWAP_CONTROL); + + val |= USBH_SC_EHCI_DATA_SWAP; + val &= ~USBH_SC_EHCI_ENDIAN_SWAP; + + val |= USBH_SC_OHCI_DATA_SWAP; + val &= ~USBH_SC_OHCI_ENDIAN_SWAP; + + if (usbh->device_mode && usbh->variant->swapctl_dev_set) + val |= usbh->variant->swapctl_dev_set; + + usbh_writel(usbh, USBH_SWAP_CONTROL, val); + } + + if (usbh_has_reg(usbh, USBH_SETUP)) { + u32 val = usbh_readl(usbh, USBH_SETUP); + + val |= usbh->variant->setup_set; + val &= ~usbh->variant->setup_clr; + + usbh_writel(usbh, USBH_SETUP, val); + } + + if (usbh_has_reg(usbh, USBH_USB_SIM_CONTROL)) { + u32 val = usbh_readl(usbh, USBH_USB_SIM_CONTROL); + + val |= usbh->variant->usc_set; + + usbh_writel(usbh, USBH_USB_SIM_CONTROL, val); + } + + if (usbh->variant->tpc_val && + usbh_has_reg(usbh, USBH_TEST_PORT_CONTROL)) + usbh_writel(usbh, USBH_TEST_PORT_CONTROL, + usbh->variant->tpc_val); + + if (usbh->device_mode && + usbh_has_reg(usbh, USBH_UTMI_CONTROL1) && + usbh->variant->utmictl1_dev_set) { + u32 val = usbh_readl(usbh, USBH_UTMI_CONTROL1); + + val |= usbh->variant->utmictl1_dev_set; + + usbh_writel(usbh, USBH_UTMI_CONTROL1, val); + } + + return 0; +} + +static int bcm63xx_usbh_phy_power_on(struct phy *phy) +{ + struct bcm63xx_usbh_phy *usbh = phy_get_drvdata(phy); + + if (usbh_has_reg(usbh, USBH_PLL_CONTROL1)) { + u32 val = usbh_readl(usbh, USBH_PLL_CONTROL1); + + val |= usbh->variant->power_pllc_set; + val &= ~usbh->variant->power_pllc_clr; + + usbh_writel(usbh, USBH_PLL_CONTROL1, val); + } + + return 0; +} + +static int bcm63xx_usbh_phy_power_off(struct phy *phy) +{ + struct bcm63xx_usbh_phy *usbh = phy_get_drvdata(phy); + + if (usbh_has_reg(usbh, USBH_PLL_CONTROL1)) { + u32 val = usbh_readl(usbh, USBH_PLL_CONTROL1); + + val &= ~usbh->variant->power_pllc_set; + val |= usbh->variant->power_pllc_clr; + + usbh_writel(usbh, USBH_PLL_CONTROL1, val); + } + + return 0; +} + +static int bcm63xx_usbh_phy_exit(struct phy *phy) +{ + struct bcm63xx_usbh_phy *usbh = phy_get_drvdata(phy); + + clk_disable_unprepare(usbh->usbh_clk); + clk_disable_unprepare(usbh->usb_ref_clk); + + return 0; +} + +static const struct phy_ops bcm63xx_usbh_phy_ops = { + .exit = bcm63xx_usbh_phy_exit, + .init = bcm63xx_usbh_phy_init, + .power_off = bcm63xx_usbh_phy_power_off, + .power_on = bcm63xx_usbh_phy_power_on, + .owner = THIS_MODULE, +}; + +static struct phy *bcm63xx_usbh_phy_xlate(struct device *dev, + struct of_phandle_args *args) +{ + struct bcm63xx_usbh_phy *usbh = dev_get_drvdata(dev); + + usbh->device_mode = !!args->args[0]; + + return of_phy_simple_xlate(dev, args); +} + +static int __init bcm63xx_usbh_phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct bcm63xx_usbh_phy *usbh; + const struct bcm63xx_usbh_phy_variant *variant; + struct phy *phy; + struct phy_provider *phy_provider; + + usbh = devm_kzalloc(dev, sizeof(*usbh), GFP_KERNEL); + if (!usbh) + return -ENOMEM; + + variant = device_get_match_data(dev); + if (!variant) + return -EINVAL; + usbh->variant = variant; + + usbh->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(usbh->base)) + return PTR_ERR(usbh->base); + + usbh->reset = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(usbh->reset)) { + if (PTR_ERR(usbh->reset) != -EPROBE_DEFER) + dev_err(dev, "failed to get reset\n"); + return PTR_ERR(usbh->reset); + } + + usbh->usbh_clk = devm_clk_get_optional(dev, "usbh"); + if (IS_ERR(usbh->usbh_clk)) + return PTR_ERR(usbh->usbh_clk); + + usbh->usb_ref_clk = devm_clk_get_optional(dev, "usb_ref"); + if (IS_ERR(usbh->usb_ref_clk)) + return PTR_ERR(usbh->usb_ref_clk); + + phy = devm_phy_create(dev, NULL, &bcm63xx_usbh_phy_ops); + if (IS_ERR(phy)) { + dev_err(dev, "failed to create PHY\n"); + return PTR_ERR(phy); + } + + platform_set_drvdata(pdev, usbh); + phy_set_drvdata(phy, usbh); + + phy_provider = devm_of_phy_provider_register(dev, + bcm63xx_usbh_phy_xlate); + if (IS_ERR(phy_provider)) { + dev_err(dev, "failed to register PHY provider\n"); + return PTR_ERR(phy_provider); + } + + dev_dbg(dev, "Registered BCM63xx USB PHY driver\n"); + + return 0; +} + +static const struct of_device_id bcm63xx_usbh_phy_ids[] __initconst = { + { .compatible = "brcm,bcm6318-usbh-phy", .data = &usbh_bcm6318 }, + { .compatible = "brcm,bcm6328-usbh-phy", .data = &usbh_bcm6328 }, + { .compatible = "brcm,bcm6358-usbh-phy", .data = &usbh_bcm6358 }, + { .compatible = "brcm,bcm6362-usbh-phy", .data = &usbh_bcm6368 }, + { .compatible = "brcm,bcm6368-usbh-phy", .data = &usbh_bcm6368 }, + { .compatible = "brcm,bcm63268-usbh-phy", .data = &usbh_bcm63268 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, bcm63xx_usbh_phy_ids); + +static struct platform_driver bcm63xx_usbh_phy_driver __refdata = { + .driver = { + .name = "bcm63xx-usbh-phy", + .of_match_table = bcm63xx_usbh_phy_ids, + }, + .probe = bcm63xx_usbh_phy_probe, +}; +module_platform_driver(bcm63xx_usbh_phy_driver); + +MODULE_DESCRIPTION("BCM63xx USBH PHY driver"); +MODULE_AUTHOR("Álvaro Fernández Rojas <noltari@gmail.com>"); +MODULE_AUTHOR("Simon Arlott"); +MODULE_LICENSE("GPL"); |