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/usb/musb/omap2430.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 '')
-rw-r--r-- | drivers/usb/musb/omap2430.c | 625 |
1 files changed, 625 insertions, 0 deletions
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c new file mode 100644 index 000000000..44a21ec86 --- /dev/null +++ b/drivers/usb/musb/omap2430.c @@ -0,0 +1,625 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2005-2007 by Texas Instruments + * Some code has been taken from tusb6010.c + * Copyrights for that are attributable to: + * Copyright (C) 2006 Nokia Corporation + * Tony Lindgren <tony@atomide.com> + * + * This file is part of the Inventra Controller Driver for Linux. + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/init.h> +#include <linux/list.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_irq.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <linux/pm_runtime.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/usb/musb.h> +#include <linux/phy/omap_control_phy.h> +#include <linux/of_platform.h> + +#include "musb_core.h" +#include "omap2430.h" + +struct omap2430_glue { + struct device *dev; + struct platform_device *musb; + enum musb_vbus_id_status status; + struct work_struct omap_musb_mailbox_work; + struct device *control_otghs; + unsigned int is_runtime_suspended:1; + unsigned int needs_resume:1; + unsigned int phy_suspended:1; +}; +#define glue_to_musb(g) platform_get_drvdata(g->musb) + +static struct omap2430_glue *_glue; + +static inline void omap2430_low_level_exit(struct musb *musb) +{ + u32 l; + + /* in any role */ + l = musb_readl(musb->mregs, OTG_FORCESTDBY); + l |= ENABLEFORCE; /* enable MSTANDBY */ + musb_writel(musb->mregs, OTG_FORCESTDBY, l); +} + +static inline void omap2430_low_level_init(struct musb *musb) +{ + u32 l; + + l = musb_readl(musb->mregs, OTG_FORCESTDBY); + l &= ~ENABLEFORCE; /* disable MSTANDBY */ + musb_writel(musb->mregs, OTG_FORCESTDBY, l); +} + +static int omap2430_musb_mailbox(enum musb_vbus_id_status status) +{ + struct omap2430_glue *glue = _glue; + + if (!glue) { + pr_err("%s: musb core is not yet initialized\n", __func__); + return -EPROBE_DEFER; + } + glue->status = status; + + if (!glue_to_musb(glue)) { + pr_err("%s: musb core is not yet ready\n", __func__); + return -EPROBE_DEFER; + } + + schedule_work(&glue->omap_musb_mailbox_work); + + return 0; +} + +/* + * HDRC controls CPEN, but beware current surges during device connect. + * They can trigger transient overcurrent conditions that must be ignored. + * + * Note that we're skipping A_WAIT_VFALL -> A_IDLE and jumping right to B_IDLE + * as set by musb_set_peripheral(). + */ +static void omap_musb_set_mailbox(struct omap2430_glue *glue) +{ + struct musb *musb = glue_to_musb(glue); + int error; + + pm_runtime_get_sync(musb->controller); + + dev_dbg(musb->controller, "VBUS %s, devctl %02x\n", + usb_otg_state_string(musb->xceiv->otg->state), + musb_readb(musb->mregs, MUSB_DEVCTL)); + + switch (glue->status) { + case MUSB_ID_GROUND: + dev_dbg(musb->controller, "ID GND\n"); + switch (musb->xceiv->otg->state) { + case OTG_STATE_A_IDLE: + error = musb_set_host(musb); + if (error) + break; + musb->xceiv->otg->state = OTG_STATE_A_WAIT_VRISE; + fallthrough; + case OTG_STATE_A_WAIT_VRISE: + case OTG_STATE_A_WAIT_BCON: + case OTG_STATE_A_HOST: + /* + * On multiple ID ground interrupts just keep enabling + * VBUS. At least cpcap VBUS shuts down otherwise. + */ + otg_set_vbus(musb->xceiv->otg, 1); + break; + default: + musb->xceiv->otg->state = OTG_STATE_A_IDLE; + musb->xceiv->last_event = USB_EVENT_ID; + if (musb->gadget_driver) { + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_HOST); + otg_set_vbus(musb->xceiv->otg, 1); + } + break; + } + break; + + case MUSB_VBUS_VALID: + dev_dbg(musb->controller, "VBUS Connect\n"); + + musb->xceiv->otg->state = OTG_STATE_B_IDLE; + musb->xceiv->last_event = USB_EVENT_VBUS; + omap_control_usb_set_mode(glue->control_otghs, USB_MODE_DEVICE); + break; + + case MUSB_ID_FLOAT: + case MUSB_VBUS_OFF: + dev_dbg(musb->controller, "VBUS Disconnect\n"); + + musb->xceiv->last_event = USB_EVENT_NONE; + musb_set_peripheral(musb); + otg_set_vbus(musb->xceiv->otg, 0); + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_DISCONNECT); + break; + default: + dev_dbg(musb->controller, "ID float\n"); + } + pm_runtime_mark_last_busy(musb->controller); + pm_runtime_put_autosuspend(musb->controller); + atomic_notifier_call_chain(&musb->xceiv->notifier, + musb->xceiv->last_event, NULL); +} + + +static void omap_musb_mailbox_work(struct work_struct *mailbox_work) +{ + struct omap2430_glue *glue = container_of(mailbox_work, + struct omap2430_glue, omap_musb_mailbox_work); + + omap_musb_set_mailbox(glue); +} + +static irqreturn_t omap2430_musb_interrupt(int irq, void *__hci) +{ + unsigned long flags; + irqreturn_t retval = IRQ_NONE; + struct musb *musb = __hci; + + spin_lock_irqsave(&musb->lock, flags); + + musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); + musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); + musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX); + + if (musb->int_usb || musb->int_tx || musb->int_rx) + retval = musb_interrupt(musb); + + spin_unlock_irqrestore(&musb->lock, flags); + + return retval; +} + +static int omap2430_musb_init(struct musb *musb) +{ + u32 l; + int status = 0; + struct device *dev = musb->controller; + struct musb_hdrc_platform_data *plat = dev_get_platdata(dev); + struct omap_musb_board_data *data = plat->board_data; + + /* We require some kind of external transceiver, hooked + * up through ULPI. TWL4030-family PMICs include one, + * which needs a driver, drivers aren't always needed. + */ + musb->phy = devm_phy_get(dev->parent, "usb2-phy"); + + /* We can't totally remove musb->xceiv as of now because + * musb core uses xceiv.state and xceiv.otg. Once we have + * a separate state machine to handle otg, these can be moved + * out of xceiv and then we can start using the generic PHY + * framework + */ + musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent, "usb-phy", 0); + + if (IS_ERR(musb->xceiv)) { + status = PTR_ERR(musb->xceiv); + + if (status == -ENXIO) + return status; + + dev_dbg(dev, "HS USB OTG: no transceiver configured\n"); + return -EPROBE_DEFER; + } + + if (IS_ERR(musb->phy)) { + dev_err(dev, "HS USB OTG: no PHY configured\n"); + return PTR_ERR(musb->phy); + } + musb->isr = omap2430_musb_interrupt; + phy_init(musb->phy); + phy_power_on(musb->phy); + + l = musb_readl(musb->mregs, OTG_INTERFSEL); + + if (data->interface_type == MUSB_INTERFACE_UTMI) { + /* OMAP4 uses Internal PHY GS70 which uses UTMI interface */ + l &= ~ULPI_12PIN; /* Disable ULPI */ + l |= UTMI_8BIT; /* Enable UTMI */ + } else { + l |= ULPI_12PIN; + } + + musb_writel(musb->mregs, OTG_INTERFSEL, l); + + dev_dbg(dev, "HS USB OTG: revision 0x%x, sysconfig 0x%02x, " + "sysstatus 0x%x, intrfsel 0x%x, simenable 0x%x\n", + musb_readl(musb->mregs, OTG_REVISION), + musb_readl(musb->mregs, OTG_SYSCONFIG), + musb_readl(musb->mregs, OTG_SYSSTATUS), + musb_readl(musb->mregs, OTG_INTERFSEL), + musb_readl(musb->mregs, OTG_SIMENABLE)); + + return 0; +} + +static void omap2430_musb_enable(struct musb *musb) +{ + struct device *dev = musb->controller; + struct omap2430_glue *glue = dev_get_drvdata(dev->parent); + + if (glue->status == MUSB_UNKNOWN) + glue->status = MUSB_VBUS_OFF; + omap_musb_set_mailbox(glue); +} + +static void omap2430_musb_disable(struct musb *musb) +{ + struct device *dev = musb->controller; + struct omap2430_glue *glue = dev_get_drvdata(dev->parent); + + if (glue->status != MUSB_UNKNOWN) + omap_control_usb_set_mode(glue->control_otghs, + USB_MODE_DISCONNECT); +} + +static int omap2430_musb_exit(struct musb *musb) +{ + struct device *dev = musb->controller; + struct omap2430_glue *glue = dev_get_drvdata(dev->parent); + + omap2430_low_level_exit(musb); + phy_power_off(musb->phy); + phy_exit(musb->phy); + musb->phy = NULL; + cancel_work_sync(&glue->omap_musb_mailbox_work); + + return 0; +} + +static const struct musb_platform_ops omap2430_ops = { + .quirks = MUSB_DMA_INVENTRA, +#ifdef CONFIG_USB_INVENTRA_DMA + .dma_init = musbhs_dma_controller_create, + .dma_exit = musbhs_dma_controller_destroy, +#endif + .init = omap2430_musb_init, + .exit = omap2430_musb_exit, + + .enable = omap2430_musb_enable, + .disable = omap2430_musb_disable, + + .phy_callback = omap2430_musb_mailbox, +}; + +static u64 omap2430_dmamask = DMA_BIT_MASK(32); + +static int omap2430_probe(struct platform_device *pdev) +{ + struct musb_hdrc_platform_data *pdata = dev_get_platdata(&pdev->dev); + struct omap_musb_board_data *data; + struct platform_device *musb; + struct omap2430_glue *glue; + struct device_node *np = pdev->dev.of_node; + struct musb_hdrc_config *config; + struct device_node *control_node; + struct platform_device *control_pdev; + int ret = -ENOMEM, val; + bool populate_irqs = false; + + if (!np) + return -ENODEV; + + glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); + if (!glue) + goto err0; + + musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO); + if (!musb) { + dev_err(&pdev->dev, "failed to allocate musb device\n"); + goto err0; + } + + musb->dev.parent = &pdev->dev; + musb->dev.dma_mask = &omap2430_dmamask; + musb->dev.coherent_dma_mask = omap2430_dmamask; + + /* + * Legacy SoCs using omap_device get confused if node is moved + * because of interconnect properties mixed into the node. + */ + if (of_get_property(np, "ti,hwmods", NULL)) { + dev_warn(&pdev->dev, "please update to probe with ti-sysc\n"); + populate_irqs = true; + } else { + device_set_of_node_from_dev(&musb->dev, &pdev->dev); + } + of_node_put(np); + + glue->dev = &pdev->dev; + glue->musb = musb; + glue->status = MUSB_UNKNOWN; + glue->control_otghs = ERR_PTR(-ENODEV); + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + goto err2; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + goto err2; + + config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL); + if (!config) + goto err2; + + of_property_read_u32(np, "mode", (u32 *)&pdata->mode); + of_property_read_u32(np, "interface-type", + (u32 *)&data->interface_type); + of_property_read_u32(np, "num-eps", (u32 *)&config->num_eps); + of_property_read_u32(np, "ram-bits", (u32 *)&config->ram_bits); + of_property_read_u32(np, "power", (u32 *)&pdata->power); + + ret = of_property_read_u32(np, "multipoint", &val); + if (!ret && val) + config->multipoint = true; + + pdata->board_data = data; + pdata->config = config; + + control_node = of_parse_phandle(np, "ctrl-module", 0); + if (control_node) { + control_pdev = of_find_device_by_node(control_node); + of_node_put(control_node); + if (!control_pdev) { + dev_err(&pdev->dev, "Failed to get control device\n"); + ret = -EINVAL; + goto err2; + } + glue->control_otghs = &control_pdev->dev; + } + + pdata->platform_ops = &omap2430_ops; + + platform_set_drvdata(pdev, glue); + + /* + * REVISIT if we ever have two instances of the wrapper, we will be + * in big trouble + */ + _glue = glue; + + INIT_WORK(&glue->omap_musb_mailbox_work, omap_musb_mailbox_work); + + ret = platform_device_add_resources(musb, pdev->resource, pdev->num_resources); + if (ret) { + dev_err(&pdev->dev, "failed to add resources\n"); + goto err2; + } + + if (populate_irqs) { + struct resource musb_res[3]; + struct resource *res; + int i = 0; + + memset(musb_res, 0, sizeof(*musb_res) * ARRAY_SIZE(musb_res)); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + ret = -EINVAL; + goto err2; + } + + musb_res[i].start = res->start; + musb_res[i].end = res->end; + musb_res[i].flags = res->flags; + musb_res[i].name = res->name; + i++; + + ret = of_irq_get_byname(np, "mc"); + if (ret > 0) { + musb_res[i].start = ret; + musb_res[i].flags = IORESOURCE_IRQ; + musb_res[i].name = "mc"; + i++; + } + + ret = of_irq_get_byname(np, "dma"); + if (ret > 0) { + musb_res[i].start = ret; + musb_res[i].flags = IORESOURCE_IRQ; + musb_res[i].name = "dma"; + i++; + } + + ret = platform_device_add_resources(musb, musb_res, i); + if (ret) { + dev_err(&pdev->dev, "failed to add IRQ resources\n"); + goto err2; + } + } + + ret = platform_device_add_data(musb, pdata, sizeof(*pdata)); + if (ret) { + dev_err(&pdev->dev, "failed to add platform_data\n"); + goto err2; + } + + pm_runtime_enable(glue->dev); + + ret = platform_device_add(musb); + if (ret) { + dev_err(&pdev->dev, "failed to register musb device\n"); + goto err3; + } + + return 0; + +err3: + pm_runtime_disable(glue->dev); + +err2: + platform_device_put(musb); + +err0: + return ret; +} + +static int omap2430_remove(struct platform_device *pdev) +{ + struct omap2430_glue *glue = platform_get_drvdata(pdev); + + platform_device_unregister(glue->musb); + pm_runtime_disable(glue->dev); + + return 0; +} + +#ifdef CONFIG_PM + +static int omap2430_runtime_suspend(struct device *dev) +{ + struct omap2430_glue *glue = dev_get_drvdata(dev); + struct musb *musb = glue_to_musb(glue); + + if (!musb) + return 0; + + musb->context.otg_interfsel = musb_readl(musb->mregs, + OTG_INTERFSEL); + + omap2430_low_level_exit(musb); + + if (!glue->phy_suspended) { + phy_power_off(musb->phy); + phy_exit(musb->phy); + } + + glue->is_runtime_suspended = 1; + + return 0; +} + +static int omap2430_runtime_resume(struct device *dev) +{ + struct omap2430_glue *glue = dev_get_drvdata(dev); + struct musb *musb = glue_to_musb(glue); + + if (!musb) + return 0; + + if (!glue->phy_suspended) { + phy_init(musb->phy); + phy_power_on(musb->phy); + } + + omap2430_low_level_init(musb); + musb_writel(musb->mregs, OTG_INTERFSEL, + musb->context.otg_interfsel); + + /* Wait for musb to get oriented. Otherwise we can get babble */ + usleep_range(200000, 250000); + + glue->is_runtime_suspended = 0; + + return 0; +} + +/* I2C and SPI PHYs need to be suspended before the glue layer */ +static int omap2430_suspend(struct device *dev) +{ + struct omap2430_glue *glue = dev_get_drvdata(dev); + struct musb *musb = glue_to_musb(glue); + + phy_power_off(musb->phy); + phy_exit(musb->phy); + glue->phy_suspended = 1; + + return 0; +} + +/* Glue layer needs to be suspended after musb_suspend() */ +static int omap2430_suspend_late(struct device *dev) +{ + struct omap2430_glue *glue = dev_get_drvdata(dev); + + if (glue->is_runtime_suspended) + return 0; + + glue->needs_resume = 1; + + return omap2430_runtime_suspend(dev); +} + +static int omap2430_resume_early(struct device *dev) +{ + struct omap2430_glue *glue = dev_get_drvdata(dev); + + if (!glue->needs_resume) + return 0; + + glue->needs_resume = 0; + + return omap2430_runtime_resume(dev); +} + +static int omap2430_resume(struct device *dev) +{ + struct omap2430_glue *glue = dev_get_drvdata(dev); + struct musb *musb = glue_to_musb(glue); + + phy_init(musb->phy); + phy_power_on(musb->phy); + glue->phy_suspended = 0; + + return 0; +} + +static const struct dev_pm_ops omap2430_pm_ops = { + .runtime_suspend = omap2430_runtime_suspend, + .runtime_resume = omap2430_runtime_resume, + .suspend = omap2430_suspend, + .suspend_late = omap2430_suspend_late, + .resume_early = omap2430_resume_early, + .resume = omap2430_resume, +}; + +#define DEV_PM_OPS (&omap2430_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif + +#ifdef CONFIG_OF +static const struct of_device_id omap2430_id_table[] = { + { + .compatible = "ti,omap4-musb" + }, + { + .compatible = "ti,omap3-musb" + }, + {}, +}; +MODULE_DEVICE_TABLE(of, omap2430_id_table); +#endif + +static struct platform_driver omap2430_driver = { + .probe = omap2430_probe, + .remove = omap2430_remove, + .driver = { + .name = "musb-omap2430", + .pm = DEV_PM_OPS, + .of_match_table = of_match_ptr(omap2430_id_table), + }, +}; + +module_platform_driver(omap2430_driver); + +MODULE_DESCRIPTION("OMAP2PLUS MUSB Glue Layer"); +MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>"); +MODULE_LICENSE("GPL v2"); |