diff options
Diffstat (limited to 'drivers/usb/misc')
23 files changed, 1079 insertions, 718 deletions
diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig index c510af7baa0d..6497c4e81e95 100644 --- a/drivers/usb/misc/Kconfig +++ b/drivers/usb/misc/Kconfig @@ -316,18 +316,30 @@ config BRCM_USB_PINMAP signals, which are typically on dedicated pins on the chip, to any gpio. -config USB_ONBOARD_HUB - tristate "Onboard USB hub support" +config USB_ONBOARD_DEV + tristate "Onboard USB device support" depends on OF help - Say Y here if you want to support discrete onboard USB hubs that - don't require an additional control bus for initialization, but - need some non-trivial form of initialization, such as enabling a - power regulator. An example for such a hub is the Realtek - RTS5411. + Say Y here if you want to support discrete onboard USB devices + that don't require an additional control bus for initialization, + but need some non-trivial form of initialization, such as + enabling a power regulator. An example for such device is the + Realtek RTS5411 hub. This driver can be used as a module but its state (module vs builtin) must match the state of the USB subsystem. Enabling this config will enable the driver and it will automatically match the state of the USB subsystem. If this driver is a - module it will be called onboard_usb_hub. + module it will be called onboard_usb_dev. + +config USB_ONBOARD_DEV_USB5744 + bool "Onboard USB Microchip usb5744 hub with SMBus support" + depends on (USB_ONBOARD_DEV && I2C=y) || (USB_ONBOARD_DEV=m && I2C=m) + help + Say Y here if you want to support onboard USB Microchip usb5744 + hub that requires SMBus initialization. + + This options enables usb5744 i2c default initialization sequence + during hub start-up configuration stage. It is must to enable this + option on AMD Kria KR260 Robotics Starter Kit as this hub is + connected to USB-SD converter which mounts the root filesystem. diff --git a/drivers/usb/misc/Makefile b/drivers/usb/misc/Makefile index 0bc732bcb162..0cd5bc8f52fe 100644 --- a/drivers/usb/misc/Makefile +++ b/drivers/usb/misc/Makefile @@ -33,4 +33,4 @@ obj-$(CONFIG_USB_CHAOSKEY) += chaoskey.o obj-$(CONFIG_USB_SISUSBVGA) += sisusbvga/ obj-$(CONFIG_USB_LINK_LAYER_TEST) += lvstest.o obj-$(CONFIG_BRCM_USB_PINMAP) += brcmstb-usb-pinmap.o -obj-$(CONFIG_USB_ONBOARD_HUB) += onboard_usb_hub.o +obj-$(CONFIG_USB_ONBOARD_DEV) += onboard_usb_dev.o diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index c8098e9b432e..62b5a30edc42 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -107,7 +107,12 @@ static void appledisplay_complete(struct urb *urb) case ACD_BTN_BRIGHT_UP: case ACD_BTN_BRIGHT_DOWN: pdata->button_pressed = 1; - schedule_delayed_work(&pdata->work, 0); + /* + * there is a window during which no device + * is registered + */ + if (pdata->bd ) + schedule_delayed_work(&pdata->work, 0); break; case ACD_BTN_NONE: default: @@ -202,6 +207,7 @@ static int appledisplay_probe(struct usb_interface *iface, const struct usb_device_id *id) { struct backlight_properties props; + struct backlight_device *backlight; struct appledisplay *pdata; struct usb_device *udev = interface_to_usbdev(iface); struct usb_endpoint_descriptor *endpoint; @@ -272,13 +278,14 @@ static int appledisplay_probe(struct usb_interface *iface, memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = 0xff; - pdata->bd = backlight_device_register(bl_name, NULL, pdata, + backlight = backlight_device_register(bl_name, NULL, pdata, &appledisplay_bl_data, &props); - if (IS_ERR(pdata->bd)) { + if (IS_ERR(backlight)) { dev_err(&iface->dev, "Backlight registration failed\n"); - retval = PTR_ERR(pdata->bd); + retval = PTR_ERR(backlight); goto error; } + pdata->bd = backlight; /* Try to get brightness */ brightness = appledisplay_bl_get_brightness(pdata->bd); diff --git a/drivers/usb/misc/brcmstb-usb-pinmap.c b/drivers/usb/misc/brcmstb-usb-pinmap.c index 2b2019c19cde..1ce885e4184c 100644 --- a/drivers/usb/misc/brcmstb-usb-pinmap.c +++ b/drivers/usb/misc/brcmstb-usb-pinmap.c @@ -335,6 +335,7 @@ static const struct of_device_id brcmstb_usb_pinmap_of_match[] = { { .compatible = "brcm,usb-pinmap" }, { }, }; +MODULE_DEVICE_TABLE(of, brcmstb_usb_pinmap_of_match); static struct platform_driver brcmstb_usb_pinmap_driver = { .driver = { diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c index 6fb5140e29b9..225863321dc4 100644 --- a/drivers/usb/misc/chaoskey.c +++ b/drivers/usb/misc/chaoskey.c @@ -27,6 +27,8 @@ static struct usb_class_driver chaoskey_class; static int chaoskey_rng_read(struct hwrng *rng, void *data, size_t max, bool wait); +static DEFINE_MUTEX(chaoskey_list_lock); + #define usb_dbg(usb_if, format, arg...) \ dev_dbg(&(usb_if)->dev, format, ## arg) @@ -233,6 +235,7 @@ static void chaoskey_disconnect(struct usb_interface *interface) usb_deregister_dev(interface, &chaoskey_class); usb_set_intfdata(interface, NULL); + mutex_lock(&chaoskey_list_lock); mutex_lock(&dev->lock); dev->present = false; @@ -244,6 +247,7 @@ static void chaoskey_disconnect(struct usb_interface *interface) } else mutex_unlock(&dev->lock); + mutex_unlock(&chaoskey_list_lock); usb_dbg(interface, "disconnect done"); } @@ -251,6 +255,7 @@ static int chaoskey_open(struct inode *inode, struct file *file) { struct chaoskey *dev; struct usb_interface *interface; + int rv = 0; /* get the interface from minor number and driver information */ interface = usb_find_interface(&chaoskey_driver, iminor(inode)); @@ -266,18 +271,23 @@ static int chaoskey_open(struct inode *inode, struct file *file) } file->private_data = dev; + mutex_lock(&chaoskey_list_lock); mutex_lock(&dev->lock); - ++dev->open; + if (dev->present) + ++dev->open; + else + rv = -ENODEV; mutex_unlock(&dev->lock); + mutex_unlock(&chaoskey_list_lock); - usb_dbg(interface, "open success"); - return 0; + return rv; } static int chaoskey_release(struct inode *inode, struct file *file) { struct chaoskey *dev = file->private_data; struct usb_interface *interface; + int rv = 0; if (dev == NULL) return -ENODEV; @@ -286,14 +296,15 @@ static int chaoskey_release(struct inode *inode, struct file *file) usb_dbg(interface, "release"); + mutex_lock(&chaoskey_list_lock); mutex_lock(&dev->lock); usb_dbg(interface, "open count at release is %d", dev->open); if (dev->open <= 0) { usb_dbg(interface, "invalid open count (%d)", dev->open); - mutex_unlock(&dev->lock); - return -ENODEV; + rv = -ENODEV; + goto bail; } --dev->open; @@ -302,13 +313,15 @@ static int chaoskey_release(struct inode *inode, struct file *file) if (dev->open == 0) { mutex_unlock(&dev->lock); chaoskey_free(dev); - } else - mutex_unlock(&dev->lock); - } else - mutex_unlock(&dev->lock); - + goto destruction; + } + } +bail: + mutex_unlock(&dev->lock); +destruction: + mutex_unlock(&chaoskey_list_lock); usb_dbg(interface, "release success"); - return 0; + return rv; } static void chaos_read_callback(struct urb *urb) diff --git a/drivers/usb/misc/cypress_cy7c63.c b/drivers/usb/misc/cypress_cy7c63.c index cecd7693b741..75f5a740cba3 100644 --- a/drivers/usb/misc/cypress_cy7c63.c +++ b/drivers/usb/misc/cypress_cy7c63.c @@ -88,6 +88,9 @@ static int vendor_command(struct cypress *dev, unsigned char request, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_OTHER, address, data, iobuf, CYPRESS_MAX_REQSIZE, USB_CTRL_GET_TIMEOUT); + /* we must not process garbage */ + if (retval < 2) + goto err_buf; /* store returned data (more READs to be added) */ switch (request) { @@ -107,6 +110,7 @@ static int vendor_command(struct cypress *dev, unsigned char request, break; } +err_buf: kfree(iobuf); error: return retval; diff --git a/drivers/usb/misc/ezusb.c b/drivers/usb/misc/ezusb.c index 78aaee56c2b7..7ab4856aba0e 100644 --- a/drivers/usb/misc/ezusb.c +++ b/drivers/usb/misc/ezusb.c @@ -148,4 +148,5 @@ int ezusb_fx2_ihex_firmware_download(struct usb_device *dev, EXPORT_SYMBOL_GPL(ezusb_fx2_ihex_firmware_download); #endif +MODULE_DESCRIPTION("EZUSB device support"); MODULE_LICENSE("GPL"); diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 6d28467ce352..365c10069345 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -277,28 +277,45 @@ static ssize_t iowarrior_read(struct file *file, char __user *buffer, struct iowarrior *dev; int read_idx; int offset; + int retval; dev = file->private_data; + if (file->f_flags & O_NONBLOCK) { + retval = mutex_trylock(&dev->mutex); + if (!retval) + return -EAGAIN; + } else { + retval = mutex_lock_interruptible(&dev->mutex); + if (retval) + return -ERESTARTSYS; + } + /* verify that the device wasn't unplugged */ - if (!dev || !dev->present) - return -ENODEV; + if (!dev->present) { + retval = -ENODEV; + goto exit; + } dev_dbg(&dev->interface->dev, "minor %d, count = %zd\n", dev->minor, count); /* read count must be packet size (+ time stamp) */ if ((count != dev->report_size) - && (count != (dev->report_size + 1))) - return -EINVAL; + && (count != (dev->report_size + 1))) { + retval = -EINVAL; + goto exit; + } /* repeat until no buffer overrun in callback handler occur */ do { atomic_set(&dev->overflow_flag, 0); if ((read_idx = read_index(dev)) == -1) { /* queue empty */ - if (file->f_flags & O_NONBLOCK) - return -EAGAIN; + if (file->f_flags & O_NONBLOCK) { + retval = -EAGAIN; + goto exit; + } else { //next line will return when there is either new data, or the device is unplugged int r = wait_event_interruptible(dev->read_wait, @@ -309,28 +326,37 @@ static ssize_t iowarrior_read(struct file *file, char __user *buffer, -1)); if (r) { //we were interrupted by a signal - return -ERESTART; + retval = -ERESTART; + goto exit; } if (!dev->present) { //The device was unplugged - return -ENODEV; + retval = -ENODEV; + goto exit; } if (read_idx == -1) { // Can this happen ??? - return 0; + retval = 0; + goto exit; } } } offset = read_idx * (dev->report_size + 1); if (copy_to_user(buffer, dev->read_queue + offset, count)) { - return -EFAULT; + retval = -EFAULT; + goto exit; } } while (atomic_read(&dev->overflow_flag)); read_idx = ++read_idx == MAX_INTERRUPT_BUFFER ? 0 : read_idx; atomic_set(&dev->read_idx, read_idx); + mutex_unlock(&dev->mutex); return count; + +exit: + mutex_unlock(&dev->mutex); + return retval; } /* @@ -885,7 +911,6 @@ error: static void iowarrior_disconnect(struct usb_interface *interface) { struct iowarrior *dev = usb_get_intfdata(interface); - int minor = dev->minor; usb_deregister_dev(interface, &iowarrior_class); @@ -909,9 +934,6 @@ static void iowarrior_disconnect(struct usb_interface *interface) mutex_unlock(&dev->mutex); iowarrior_delete(dev); } - - dev_info(&interface->dev, "I/O-Warror #%d now disconnected\n", - minor - IOWARRIOR_MINOR_BASE); } /* usb specific object needed to register this driver with the usb subsystem */ diff --git a/drivers/usb/misc/isight_firmware.c b/drivers/usb/misc/isight_firmware.c index 4d30095d6ad2..2d9af74a62c1 100644 --- a/drivers/usb/misc/isight_firmware.c +++ b/drivers/usb/misc/isight_firmware.c @@ -127,5 +127,6 @@ static struct usb_driver isight_firmware_driver = { module_usb_driver(isight_firmware_driver); +MODULE_DESCRIPTION("iSight firmware loading support"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index 7cbef74dfc9a..f392d6f84df9 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -627,7 +627,6 @@ static const struct file_operations ld_usb_fops = { .open = ld_usb_open, .release = ld_usb_release, .poll = ld_usb_poll, - .llseek = no_llseek, }; /* diff --git a/drivers/usb/misc/onboard_usb_dev.c b/drivers/usb/misc/onboard_usb_dev.c new file mode 100644 index 000000000000..5b481876af1b --- /dev/null +++ b/drivers/usb/misc/onboard_usb_dev.c @@ -0,0 +1,724 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for onboard USB devices + * + * Copyright (c) 2022, Google LLC + */ + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/export.h> +#include <linux/err.h> +#include <linux/gpio/consumer.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> +#include <linux/suspend.h> +#include <linux/sysfs.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> +#include <linux/usb/onboard_dev.h> +#include <linux/workqueue.h> + +#include "onboard_usb_dev.h" + +/* USB5744 register offset and mask */ +#define USB5744_CMD_ATTACH 0xAA +#define USB5744_CMD_ATTACH_LSB 0x56 +#define USB5744_CMD_CREG_ACCESS 0x99 +#define USB5744_CMD_CREG_ACCESS_LSB 0x37 +#define USB5744_CREG_MEM_ADDR 0x00 +#define USB5744_CREG_MEM_RD_ADDR 0x04 +#define USB5744_CREG_WRITE 0x00 +#define USB5744_CREG_READ 0x01 +#define USB5744_CREG_RUNTIMEFLAGS2 0x411D +#define USB5744_CREG_BYPASS_UDC_SUSPEND BIT(3) + +static void onboard_dev_attach_usb_driver(struct work_struct *work); + +static struct usb_device_driver onboard_dev_usbdev_driver; +static DECLARE_WORK(attach_usb_driver_work, onboard_dev_attach_usb_driver); + +/************************** Platform driver **************************/ + +struct usbdev_node { + struct usb_device *udev; + struct list_head list; +}; + +struct onboard_dev { + struct regulator_bulk_data supplies[MAX_SUPPLIES]; + struct device *dev; + const struct onboard_dev_pdata *pdata; + struct gpio_desc *reset_gpio; + bool always_powered_in_suspend; + bool is_powered_on; + bool going_away; + struct list_head udev_list; + struct mutex lock; + struct clk *clk; +}; + +static int onboard_dev_get_regulators(struct onboard_dev *onboard_dev) +{ + const char * const *supply_names = onboard_dev->pdata->supply_names; + unsigned int num_supplies = onboard_dev->pdata->num_supplies; + struct device *dev = onboard_dev->dev; + unsigned int i; + int err; + + if (num_supplies > MAX_SUPPLIES) + return dev_err_probe(dev, -EINVAL, "max %d supplies supported!\n", + MAX_SUPPLIES); + + for (i = 0; i < num_supplies; i++) + onboard_dev->supplies[i].supply = supply_names[i]; + + err = devm_regulator_bulk_get(dev, num_supplies, onboard_dev->supplies); + if (err) + dev_err(dev, "Failed to get regulator supplies: %pe\n", + ERR_PTR(err)); + + return err; +} + +static int onboard_dev_power_on(struct onboard_dev *onboard_dev) +{ + int err; + + err = clk_prepare_enable(onboard_dev->clk); + if (err) { + dev_err(onboard_dev->dev, "failed to enable clock: %pe\n", + ERR_PTR(err)); + return err; + } + + err = regulator_bulk_enable(onboard_dev->pdata->num_supplies, + onboard_dev->supplies); + if (err) { + dev_err(onboard_dev->dev, "failed to enable supplies: %pe\n", + ERR_PTR(err)); + goto disable_clk; + } + + fsleep(onboard_dev->pdata->reset_us); + gpiod_set_value_cansleep(onboard_dev->reset_gpio, 0); + fsleep(onboard_dev->pdata->power_on_delay_us); + + onboard_dev->is_powered_on = true; + + return 0; + +disable_clk: + clk_disable_unprepare(onboard_dev->clk); + return err; +} + +static int onboard_dev_power_off(struct onboard_dev *onboard_dev) +{ + int err; + + gpiod_set_value_cansleep(onboard_dev->reset_gpio, 1); + + err = regulator_bulk_disable(onboard_dev->pdata->num_supplies, + onboard_dev->supplies); + if (err) { + dev_err(onboard_dev->dev, "failed to disable supplies: %pe\n", + ERR_PTR(err)); + return err; + } + + clk_disable_unprepare(onboard_dev->clk); + + onboard_dev->is_powered_on = false; + + return 0; +} + +static int __maybe_unused onboard_dev_suspend(struct device *dev) +{ + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); + struct usbdev_node *node; + bool power_off = true; + + if (onboard_dev->always_powered_in_suspend) + return 0; + + mutex_lock(&onboard_dev->lock); + + list_for_each_entry(node, &onboard_dev->udev_list, list) { + if (!device_may_wakeup(node->udev->bus->controller)) + continue; + + if (usb_wakeup_enabled_descendants(node->udev)) { + power_off = false; + break; + } + } + + mutex_unlock(&onboard_dev->lock); + + if (!power_off) + return 0; + + return onboard_dev_power_off(onboard_dev); +} + +static int __maybe_unused onboard_dev_resume(struct device *dev) +{ + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); + + if (onboard_dev->is_powered_on) + return 0; + + return onboard_dev_power_on(onboard_dev); +} + +static inline void get_udev_link_name(const struct usb_device *udev, char *buf, + size_t size) +{ + snprintf(buf, size, "usb_dev.%s", dev_name(&udev->dev)); +} + +static int onboard_dev_add_usbdev(struct onboard_dev *onboard_dev, + struct usb_device *udev) +{ + struct usbdev_node *node; + char link_name[64]; + int err; + + mutex_lock(&onboard_dev->lock); + + if (onboard_dev->going_away) { + err = -EINVAL; + goto error; + } + + node = kzalloc(sizeof(*node), GFP_KERNEL); + if (!node) { + err = -ENOMEM; + goto error; + } + + node->udev = udev; + + list_add(&node->list, &onboard_dev->udev_list); + + mutex_unlock(&onboard_dev->lock); + + get_udev_link_name(udev, link_name, sizeof(link_name)); + WARN_ON(sysfs_create_link(&onboard_dev->dev->kobj, &udev->dev.kobj, + link_name)); + + return 0; + +error: + mutex_unlock(&onboard_dev->lock); + + return err; +} + +static void onboard_dev_remove_usbdev(struct onboard_dev *onboard_dev, + const struct usb_device *udev) +{ + struct usbdev_node *node; + char link_name[64]; + + get_udev_link_name(udev, link_name, sizeof(link_name)); + sysfs_remove_link(&onboard_dev->dev->kobj, link_name); + + mutex_lock(&onboard_dev->lock); + + list_for_each_entry(node, &onboard_dev->udev_list, list) { + if (node->udev == udev) { + list_del(&node->list); + kfree(node); + break; + } + } + + mutex_unlock(&onboard_dev->lock); +} + +static ssize_t always_powered_in_suspend_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + const struct onboard_dev *onboard_dev = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", onboard_dev->always_powered_in_suspend); +} + +static ssize_t always_powered_in_suspend_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); + bool val; + int ret; + + ret = kstrtobool(buf, &val); + if (ret < 0) + return ret; + + onboard_dev->always_powered_in_suspend = val; + + return count; +} +static DEVICE_ATTR_RW(always_powered_in_suspend); + +static struct attribute *onboard_dev_attrs[] = { + &dev_attr_always_powered_in_suspend.attr, + NULL, +}; + +static umode_t onboard_dev_attrs_are_visible(struct kobject *kobj, + struct attribute *attr, + int n) +{ + struct device *dev = kobj_to_dev(kobj); + struct onboard_dev *onboard_dev = dev_get_drvdata(dev); + + if (attr == &dev_attr_always_powered_in_suspend.attr && + !onboard_dev->pdata->is_hub) + return 0; + + return attr->mode; +} + +static const struct attribute_group onboard_dev_group = { + .is_visible = onboard_dev_attrs_are_visible, + .attrs = onboard_dev_attrs, +}; +__ATTRIBUTE_GROUPS(onboard_dev); + + +static void onboard_dev_attach_usb_driver(struct work_struct *work) +{ + int err; + + err = driver_attach(&onboard_dev_usbdev_driver.driver); + if (err) + pr_err("Failed to attach USB driver: %pe\n", ERR_PTR(err)); +} + +#if IS_ENABLED(CONFIG_USB_ONBOARD_DEV_USB5744) +static int onboard_dev_5744_i2c_read_byte(struct i2c_client *client, u16 addr, u8 *data) +{ + struct i2c_msg msg[2]; + u8 rd_buf[3]; + int ret; + + u8 wr_buf[7] = {0, USB5744_CREG_MEM_ADDR, 4, + USB5744_CREG_READ, 1, + addr >> 8 & 0xff, + addr & 0xff}; + msg[0].addr = client->addr; + msg[0].flags = 0; + msg[0].len = sizeof(wr_buf); + msg[0].buf = wr_buf; + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret < 0) + return ret; + + wr_buf[0] = USB5744_CMD_CREG_ACCESS; + wr_buf[1] = USB5744_CMD_CREG_ACCESS_LSB; + wr_buf[2] = 0; + msg[0].len = 3; + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret < 0) + return ret; + + wr_buf[0] = 0; + wr_buf[1] = USB5744_CREG_MEM_RD_ADDR; + msg[0].len = 2; + + msg[1].addr = client->addr; + msg[1].flags = I2C_M_RD; + msg[1].len = 2; + msg[1].buf = rd_buf; + + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) + return ret; + *data = rd_buf[1]; + + return 0; +} + +static int onboard_dev_5744_i2c_write_byte(struct i2c_client *client, u16 addr, u8 data) +{ + struct i2c_msg msg[2]; + int ret; + + u8 wr_buf[8] = {0, USB5744_CREG_MEM_ADDR, 5, + USB5744_CREG_WRITE, 1, + addr >> 8 & 0xff, + addr & 0xff, + data}; + msg[0].addr = client->addr; + msg[0].flags = 0; + msg[0].len = sizeof(wr_buf); + msg[0].buf = wr_buf; + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret < 0) + return ret; + + msg[0].len = 3; + wr_buf[0] = USB5744_CMD_CREG_ACCESS; + wr_buf[1] = USB5744_CMD_CREG_ACCESS_LSB; + wr_buf[2] = 0; + + ret = i2c_transfer(client->adapter, msg, 1); + if (ret < 0) + return ret; + + return 0; +} + +static int onboard_dev_5744_i2c_init(struct i2c_client *client) +{ + struct device *dev = &client->dev; + int ret; + u8 reg; + + /* + * Set BYPASS_UDC_SUSPEND bit to ensure MCU is always enabled + * and ready to respond to SMBus runtime commands. + * The command writes 5 bytes to memory and single data byte in + * configuration register. + */ + ret = onboard_dev_5744_i2c_read_byte(client, + USB5744_CREG_RUNTIMEFLAGS2, ®); + if (ret) + return dev_err_probe(dev, ret, "CREG_RUNTIMEFLAGS2 read failed\n"); + + reg |= USB5744_CREG_BYPASS_UDC_SUSPEND; + ret = onboard_dev_5744_i2c_write_byte(client, + USB5744_CREG_RUNTIMEFLAGS2, reg); + if (ret) + return dev_err_probe(dev, ret, "BYPASS_UDC_SUSPEND bit configuration failed\n"); + + /* Send SMBus command to boot hub. */ + ret = i2c_smbus_write_word_data(client, USB5744_CMD_ATTACH, + USB5744_CMD_ATTACH_LSB); + if (ret < 0) + return dev_err_probe(dev, ret, "USB Attach with SMBus command failed\n"); + + return ret; +} +#else +static int onboard_dev_5744_i2c_init(struct i2c_client *client) +{ + return -ENODEV; +} +#endif + +static int onboard_dev_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct onboard_dev *onboard_dev; + struct device_node *i2c_node; + int err; + + onboard_dev = devm_kzalloc(dev, sizeof(*onboard_dev), GFP_KERNEL); + if (!onboard_dev) + return -ENOMEM; + + onboard_dev->pdata = device_get_match_data(dev); + if (!onboard_dev->pdata) + return -EINVAL; + + if (!onboard_dev->pdata->is_hub) + onboard_dev->always_powered_in_suspend = true; + + onboard_dev->dev = dev; + + err = onboard_dev_get_regulators(onboard_dev); + if (err) + return err; + + onboard_dev->clk = devm_clk_get_optional(dev, NULL); + if (IS_ERR(onboard_dev->clk)) + return dev_err_probe(dev, PTR_ERR(onboard_dev->clk), + "failed to get clock\n"); + + onboard_dev->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(onboard_dev->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(onboard_dev->reset_gpio), + "failed to get reset GPIO\n"); + + mutex_init(&onboard_dev->lock); + INIT_LIST_HEAD(&onboard_dev->udev_list); + + dev_set_drvdata(dev, onboard_dev); + + err = onboard_dev_power_on(onboard_dev); + if (err) + return err; + + i2c_node = of_parse_phandle(pdev->dev.of_node, "i2c-bus", 0); + if (i2c_node) { + struct i2c_client *client = NULL; + +#if IS_ENABLED(CONFIG_USB_ONBOARD_DEV_USB5744) + client = of_find_i2c_device_by_node(i2c_node); +#endif + of_node_put(i2c_node); + + if (!client) { + err = -EPROBE_DEFER; + goto err_power_off; + } + + if (of_device_is_compatible(pdev->dev.of_node, "usb424,2744") || + of_device_is_compatible(pdev->dev.of_node, "usb424,5744")) { + err = onboard_dev_5744_i2c_init(client); + onboard_dev->always_powered_in_suspend = true; + } + + put_device(&client->dev); + if (err < 0) + goto err_power_off; + } + + /* + * The USB driver might have been detached from the USB devices by + * onboard_dev_remove() (e.g. through an 'unbind' by userspace), + * make sure to re-attach it if needed. + * + * This needs to be done deferred to avoid self-deadlocks on systems + * with nested onboard hubs. + */ + schedule_work(&attach_usb_driver_work); + + return 0; + +err_power_off: + onboard_dev_power_off(onboard_dev); + return err; +} + +static void onboard_dev_remove(struct platform_device *pdev) +{ + struct onboard_dev *onboard_dev = dev_get_drvdata(&pdev->dev); + struct usbdev_node *node; + struct usb_device *udev; + + onboard_dev->going_away = true; + + mutex_lock(&onboard_dev->lock); + + /* unbind the USB devices to avoid dangling references to this device */ + while (!list_empty(&onboard_dev->udev_list)) { + node = list_first_entry(&onboard_dev->udev_list, + struct usbdev_node, list); + udev = node->udev; + + /* + * Unbinding the driver will call onboard_dev_remove_usbdev(), + * which acquires onboard_dev->lock. We must release the lock + * first. + */ + get_device(&udev->dev); + mutex_unlock(&onboard_dev->lock); + device_release_driver(&udev->dev); + put_device(&udev->dev); + mutex_lock(&onboard_dev->lock); + } + + mutex_unlock(&onboard_dev->lock); + + onboard_dev_power_off(onboard_dev); +} + +MODULE_DEVICE_TABLE(of, onboard_dev_match); + +static const struct dev_pm_ops __maybe_unused onboard_dev_pm_ops = { + SET_LATE_SYSTEM_SLEEP_PM_OPS(onboard_dev_suspend, onboard_dev_resume) +}; + +static struct platform_driver onboard_dev_driver = { + .probe = onboard_dev_probe, + .remove = onboard_dev_remove, + + .driver = { + .name = "onboard-usb-dev", + .of_match_table = onboard_dev_match, + .pm = pm_ptr(&onboard_dev_pm_ops), + .dev_groups = onboard_dev_groups, + }, +}; + +/************************** USB driver **************************/ + +#define VENDOR_ID_CYPRESS 0x04b4 +#define VENDOR_ID_GENESYS 0x05e3 +#define VENDOR_ID_MICROCHIP 0x0424 +#define VENDOR_ID_PARADE 0x1da0 +#define VENDOR_ID_REALTEK 0x0bda +#define VENDOR_ID_TI 0x0451 +#define VENDOR_ID_VIA 0x2109 +#define VENDOR_ID_XMOS 0x20B1 + +/* + * Returns the onboard_dev platform device that is associated with the USB + * device passed as parameter. + */ +static struct onboard_dev *_find_onboard_dev(struct device *dev) +{ + struct platform_device *pdev; + struct device_node *np; + struct onboard_dev *onboard_dev; + + pdev = of_find_device_by_node(dev->of_node); + if (!pdev) { + np = of_parse_phandle(dev->of_node, "peer-hub", 0); + if (!np) { + dev_err(dev, "failed to find device node for peer hub\n"); + return ERR_PTR(-EINVAL); + } + + pdev = of_find_device_by_node(np); + of_node_put(np); + + if (!pdev) + return ERR_PTR(-ENODEV); + } + + onboard_dev = dev_get_drvdata(&pdev->dev); + put_device(&pdev->dev); + + /* + * The presence of drvdata indicates that the platform driver finished + * probing. This handles the case where (conceivably) we could be + * running at the exact same time as the platform driver's probe. If + * we detect the race we request probe deferral and we'll come back and + * try again. + */ + if (!onboard_dev) + return ERR_PTR(-EPROBE_DEFER); + + return onboard_dev; +} + +static bool onboard_dev_usbdev_match(struct usb_device *udev) +{ + /* Onboard devices using this driver must have a device tree node */ + return !!udev->dev.of_node; +} + +static int onboard_dev_usbdev_probe(struct usb_device *udev) +{ + struct device *dev = &udev->dev; + struct onboard_dev *onboard_dev; + int err; + + onboard_dev = _find_onboard_dev(dev); + if (IS_ERR(onboard_dev)) + return PTR_ERR(onboard_dev); + + dev_set_drvdata(dev, onboard_dev); + + err = onboard_dev_add_usbdev(onboard_dev, udev); + if (err) + return err; + + return 0; +} + +static void onboard_dev_usbdev_disconnect(struct usb_device *udev) +{ + struct onboard_dev *onboard_dev = dev_get_drvdata(&udev->dev); + + onboard_dev_remove_usbdev(onboard_dev, udev); +} + +static const struct usb_device_id onboard_dev_id_table[] = { + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6500) }, /* CYUSB330x 3.0 HUB */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6502) }, /* CYUSB330x 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6503) }, /* CYUSB33{0,1}x 2.0 HUB, Vendor Mode */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6504) }, /* CYUSB331x 3.0 HUB */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6506) }, /* CYUSB331x 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6507) }, /* CYUSB332x 2.0 HUB, Vendor Mode */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6508) }, /* CYUSB332x 3.0 HUB */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x650a) }, /* CYUSB332x 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6570) }, /* CY7C6563x 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_GENESYS, 0x0608) }, /* Genesys Logic GL850G USB 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_GENESYS, 0x0610) }, /* Genesys Logic GL852G USB 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_GENESYS, 0x0620) }, /* Genesys Logic GL3523 USB 3.1 HUB */ + { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2412) }, /* USB2412 USB 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2514) }, /* USB2514B USB 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2517) }, /* USB2517 USB 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2744) }, /* USB5744 USB 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x5744) }, /* USB5744 USB 3.0 HUB */ + { USB_DEVICE(VENDOR_ID_PARADE, 0x5511) }, /* PS5511 USB 3.2 */ + { USB_DEVICE(VENDOR_ID_PARADE, 0x55a1) }, /* PS5511 USB 2.0 */ + { USB_DEVICE(VENDOR_ID_REALTEK, 0x0411) }, /* RTS5411 USB 3.1 HUB */ + { USB_DEVICE(VENDOR_ID_REALTEK, 0x5411) }, /* RTS5411 USB 2.1 HUB */ + { USB_DEVICE(VENDOR_ID_REALTEK, 0x0414) }, /* RTS5414 USB 3.2 HUB */ + { USB_DEVICE(VENDOR_ID_REALTEK, 0x5414) }, /* RTS5414 USB 2.1 HUB */ + { USB_DEVICE(VENDOR_ID_REALTEK, 0x0179) }, /* RTL8188ETV 2.4GHz WiFi */ + { USB_DEVICE(VENDOR_ID_TI, 0x8025) }, /* TI USB8020B 3.0 HUB */ + { USB_DEVICE(VENDOR_ID_TI, 0x8027) }, /* TI USB8020B 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_TI, 0x8140) }, /* TI USB8041 3.0 HUB */ + { USB_DEVICE(VENDOR_ID_TI, 0x8142) }, /* TI USB8041 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_TI, 0x8440) }, /* TI USB8044 3.0 HUB */ + { USB_DEVICE(VENDOR_ID_TI, 0x8442) }, /* TI USB8044 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_VIA, 0x0817) }, /* VIA VL817 3.1 HUB */ + { USB_DEVICE(VENDOR_ID_VIA, 0x2817) }, /* VIA VL817 2.0 HUB */ + { USB_DEVICE(VENDOR_ID_XMOS, 0x0013) }, /* XMOS XVF3500 Voice Processor */ + {} +}; +MODULE_DEVICE_TABLE(usb, onboard_dev_id_table); + +static struct usb_device_driver onboard_dev_usbdev_driver = { + .name = "onboard-usb-dev", + .match = onboard_dev_usbdev_match, + .probe = onboard_dev_usbdev_probe, + .disconnect = onboard_dev_usbdev_disconnect, + .generic_subclass = 1, + .supports_autosuspend = 1, + .id_table = onboard_dev_id_table, +}; + +static int __init onboard_dev_init(void) +{ + int ret; + + ret = usb_register_device_driver(&onboard_dev_usbdev_driver, THIS_MODULE); + if (ret) + return ret; + + ret = platform_driver_register(&onboard_dev_driver); + if (ret) + usb_deregister_device_driver(&onboard_dev_usbdev_driver); + + return ret; +} +module_init(onboard_dev_init); + +static void __exit onboard_dev_exit(void) +{ + usb_deregister_device_driver(&onboard_dev_usbdev_driver); + platform_driver_unregister(&onboard_dev_driver); + + cancel_work_sync(&attach_usb_driver_work); +} +module_exit(onboard_dev_exit); + +MODULE_AUTHOR("Matthias Kaehlcke <mka@chromium.org>"); +MODULE_DESCRIPTION("Driver for discrete onboard USB devices"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/misc/onboard_usb_dev.h b/drivers/usb/misc/onboard_usb_dev.h new file mode 100644 index 000000000000..e017b8e22f93 --- /dev/null +++ b/drivers/usb/misc/onboard_usb_dev.h @@ -0,0 +1,150 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2022, Google LLC + */ + +#ifndef _USB_MISC_ONBOARD_USB_DEV_H +#define _USB_MISC_ONBOARD_USB_DEV_H + +#define MAX_SUPPLIES 2 + +struct onboard_dev_pdata { + unsigned long reset_us; /* reset pulse width in us */ + unsigned long power_on_delay_us; /* power on delay in us */ + unsigned int num_supplies; /* number of supplies */ + const char * const supply_names[MAX_SUPPLIES]; + bool is_hub; +}; + +static const struct onboard_dev_pdata microchip_usb424_data = { + .reset_us = 1, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata microchip_usb2514_data = { + .reset_us = 1, + .num_supplies = 2, + .supply_names = { "vdd", "vdda" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata microchip_usb5744_data = { + .reset_us = 0, + .power_on_delay_us = 10000, + .num_supplies = 2, + .supply_names = { "vdd", "vdd2" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata parade_ps5511_data = { + .reset_us = 500, + .num_supplies = 2, + .supply_names = { "vddd11", "vdd33"}, + .is_hub = true, +}; + +static const struct onboard_dev_pdata realtek_rts5411_data = { + .reset_us = 0, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata realtek_rtl8188etv_data = { + .reset_us = 0, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = false, +}; + +static const struct onboard_dev_pdata ti_tusb8020b_data = { + .reset_us = 3000, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata ti_tusb8041_data = { + .reset_us = 3000, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata cypress_hx3_data = { + .reset_us = 10000, + .num_supplies = 2, + .supply_names = { "vdd", "vdd2" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata cypress_hx2vl_data = { + .reset_us = 1, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata genesys_gl850g_data = { + .reset_us = 3, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata genesys_gl852g_data = { + .reset_us = 50, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata vialab_vl817_data = { + .reset_us = 10, + .num_supplies = 1, + .supply_names = { "vdd" }, + .is_hub = true, +}; + +static const struct onboard_dev_pdata xmos_xvf3500_data = { + .reset_us = 1, + .num_supplies = 2, + .supply_names = { "vdd", "vddio" }, + .is_hub = false, +}; + +static const struct of_device_id onboard_dev_match[] = { + { .compatible = "usb424,2412", .data = µchip_usb424_data, }, + { .compatible = "usb424,2514", .data = µchip_usb2514_data, }, + { .compatible = "usb424,2517", .data = µchip_usb424_data, }, + { .compatible = "usb424,2744", .data = µchip_usb5744_data, }, + { .compatible = "usb424,5744", .data = µchip_usb5744_data, }, + { .compatible = "usb451,8025", .data = &ti_tusb8020b_data, }, + { .compatible = "usb451,8027", .data = &ti_tusb8020b_data, }, + { .compatible = "usb451,8140", .data = &ti_tusb8041_data, }, + { .compatible = "usb451,8142", .data = &ti_tusb8041_data, }, + { .compatible = "usb451,8440", .data = &ti_tusb8041_data, }, + { .compatible = "usb451,8442", .data = &ti_tusb8041_data, }, + { .compatible = "usb4b4,6504", .data = &cypress_hx3_data, }, + { .compatible = "usb4b4,6506", .data = &cypress_hx3_data, }, + { .compatible = "usb4b4,6570", .data = &cypress_hx2vl_data, }, + { .compatible = "usb5e3,608", .data = &genesys_gl850g_data, }, + { .compatible = "usb5e3,610", .data = &genesys_gl852g_data, }, + { .compatible = "usb5e3,620", .data = &genesys_gl852g_data, }, + { .compatible = "usb5e3,626", .data = &genesys_gl852g_data, }, + { .compatible = "usbbda,179", .data = &realtek_rtl8188etv_data, }, + { .compatible = "usbbda,411", .data = &realtek_rts5411_data, }, + { .compatible = "usbbda,5411", .data = &realtek_rts5411_data, }, + { .compatible = "usbbda,414", .data = &realtek_rts5411_data, }, + { .compatible = "usbbda,5414", .data = &realtek_rts5411_data, }, + { .compatible = "usb1da0,5511", .data = ¶de_ps5511_data, }, + { .compatible = "usb1da0,55a1", .data = ¶de_ps5511_data, }, + { .compatible = "usb2109,817", .data = &vialab_vl817_data, }, + { .compatible = "usb2109,2817", .data = &vialab_vl817_data, }, + { .compatible = "usb20b1,0013", .data = &xmos_xvf3500_data, }, + {} +}; + +#endif /* _USB_MISC_ONBOARD_USB_DEV_H */ diff --git a/drivers/usb/misc/onboard_usb_hub_pdevs.c b/drivers/usb/misc/onboard_usb_dev_pdevs.c index ed22a18f4ab7..722504752ce3 100644 --- a/drivers/usb/misc/onboard_usb_hub_pdevs.c +++ b/drivers/usb/misc/onboard_usb_dev_pdevs.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * API for creating and destroying USB onboard hub platform devices + * API for creating and destroying USB onboard platform devices * * Copyright (c) 2022, Google LLC */ @@ -15,29 +15,30 @@ #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/of.h> -#include <linux/usb/onboard_hub.h> +#include <linux/usb/onboard_dev.h> -#include "onboard_usb_hub.h" +#include "onboard_usb_dev.h" struct pdev_list_entry { struct platform_device *pdev; struct list_head node; }; -static bool of_is_onboard_usb_hub(const struct device_node *np) +static bool of_is_onboard_usb_dev(struct device_node *np) { - return !!of_match_node(onboard_hub_match, np); + return !!of_match_node(onboard_dev_match, np); } /** - * onboard_hub_create_pdevs -- create platform devices for onboard USB hubs - * @parent_hub : parent hub to scan for connected onboard hubs - * @pdev_list : list of onboard hub platform devices owned by the parent hub + * onboard_dev_create_pdevs -- create platform devices for onboard USB devices + * @parent_hub : parent hub to scan for connected onboard devices + * @pdev_list : list of onboard platform devices owned by the parent hub * - * Creates a platform device for each supported onboard hub that is connected to - * the given parent hub. The platform device is in charge of initializing the - * hub (enable regulators, take the hub out of reset, ...) and can optionally - * control whether the hub remains powered during system suspend or not. + * Creates a platform device for each supported onboard device that is connected + * to the given parent hub. The platform device is in charge of initializing the + * device (enable regulators, take the device out of reset, ...). For onboard + * hubs, it can optionally control whether the device remains powered during + * system suspend or not. * * To keep track of the platform devices they are added to a list that is owned * by the parent hub. @@ -50,9 +51,9 @@ static bool of_is_onboard_usb_hub(const struct device_node *np) * node. That means the root hubs of the primary and secondary HCD share the * same device tree node (the HCD node). As a result this function can be called * twice with the same DT node for root hubs. We only want to create a single - * platform device for each physical onboard hub, hence for root hubs the loop - * is only executed for the root hub of the primary HCD. Since the function - * scans through all child nodes it still creates pdevs for onboard hubs + * platform device for each physical onboard device, hence for root hubs the + * loop is only executed for the root hub of the primary HCD. Since the function + * scans through all child nodes it still creates pdevs for onboard devices * connected to the root hub of the secondary HCD if needed. * * Further there must be only one platform device for onboard hubs with a peer @@ -63,7 +64,7 @@ static bool of_is_onboard_usb_hub(const struct device_node *np) * the function processes the nodes of both peers. A platform device is only * created if the peer hub doesn't have one already. */ -void onboard_hub_create_pdevs(struct usb_device *parent_hub, struct list_head *pdev_list) +void onboard_dev_create_pdevs(struct usb_device *parent_hub, struct list_head *pdev_list) { int i; struct usb_hcd *hcd = bus_to_hcd(parent_hub->bus); @@ -82,7 +83,7 @@ void onboard_hub_create_pdevs(struct usb_device *parent_hub, struct list_head *p if (!np) continue; - if (!of_is_onboard_usb_hub(np)) + if (!of_is_onboard_usb_dev(np)) goto node_put; npc = of_parse_phandle(np, "peer-hub", 0); @@ -104,7 +105,7 @@ void onboard_hub_create_pdevs(struct usb_device *parent_hub, struct list_head *p pdev = of_platform_device_create(np, NULL, &parent_hub->dev); if (!pdev) { dev_err(&parent_hub->dev, - "failed to create platform device for onboard hub '%pOF'\n", np); + "failed to create platform device for onboard dev '%pOF'\n", np); goto node_put; } @@ -121,16 +122,16 @@ node_put: of_node_put(np); } } -EXPORT_SYMBOL_GPL(onboard_hub_create_pdevs); +EXPORT_SYMBOL_GPL(onboard_dev_create_pdevs); /** - * onboard_hub_destroy_pdevs -- free resources of onboard hub platform devices - * @pdev_list : list of onboard hub platform devices + * onboard_dev_destroy_pdevs -- free resources of onboard platform devices + * @pdev_list : list of onboard platform devices * * Destroys the platform devices in the given list and frees the memory associated * with the list entry. */ -void onboard_hub_destroy_pdevs(struct list_head *pdev_list) +void onboard_dev_destroy_pdevs(struct list_head *pdev_list) { struct pdev_list_entry *pdle, *tmp; @@ -140,4 +141,4 @@ void onboard_hub_destroy_pdevs(struct list_head *pdev_list) kfree(pdle); } } -EXPORT_SYMBOL_GPL(onboard_hub_destroy_pdevs); +EXPORT_SYMBOL_GPL(onboard_dev_destroy_pdevs); diff --git a/drivers/usb/misc/onboard_usb_hub.c b/drivers/usb/misc/onboard_usb_hub.c deleted file mode 100644 index c6101ed2d9d4..000000000000 --- a/drivers/usb/misc/onboard_usb_hub.c +++ /dev/null @@ -1,503 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Driver for onboard USB hubs - * - * Copyright (c) 2022, Google LLC - */ - -#include <linux/clk.h> -#include <linux/device.h> -#include <linux/export.h> -#include <linux/err.h> -#include <linux/gpio/consumer.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/of.h> -#include <linux/of_platform.h> -#include <linux/platform_device.h> -#include <linux/regulator/consumer.h> -#include <linux/slab.h> -#include <linux/suspend.h> -#include <linux/sysfs.h> -#include <linux/usb.h> -#include <linux/usb/hcd.h> -#include <linux/usb/onboard_hub.h> -#include <linux/workqueue.h> - -#include "onboard_usb_hub.h" - -/* - * Use generic names, as the actual names might differ between hubs. If a new - * hub requires more than the currently supported supplies, add a new one here. - */ -static const char * const supply_names[] = { - "vdd", - "vdd2", -}; - -#define MAX_SUPPLIES ARRAY_SIZE(supply_names) - -static void onboard_hub_attach_usb_driver(struct work_struct *work); - -static struct usb_device_driver onboard_hub_usbdev_driver; -static DECLARE_WORK(attach_usb_driver_work, onboard_hub_attach_usb_driver); - -/************************** Platform driver **************************/ - -struct usbdev_node { - struct usb_device *udev; - struct list_head list; -}; - -struct onboard_hub { - struct regulator_bulk_data supplies[MAX_SUPPLIES]; - struct device *dev; - const struct onboard_hub_pdata *pdata; - struct gpio_desc *reset_gpio; - bool always_powered_in_suspend; - bool is_powered_on; - bool going_away; - struct list_head udev_list; - struct mutex lock; - struct clk *clk; -}; - -static int onboard_hub_power_on(struct onboard_hub *hub) -{ - int err; - - err = clk_prepare_enable(hub->clk); - if (err) { - dev_err(hub->dev, "failed to enable clock: %pe\n", ERR_PTR(err)); - return err; - } - - err = regulator_bulk_enable(hub->pdata->num_supplies, hub->supplies); - if (err) { - dev_err(hub->dev, "failed to enable supplies: %pe\n", ERR_PTR(err)); - return err; - } - - fsleep(hub->pdata->reset_us); - gpiod_set_value_cansleep(hub->reset_gpio, 0); - - hub->is_powered_on = true; - - return 0; -} - -static int onboard_hub_power_off(struct onboard_hub *hub) -{ - int err; - - gpiod_set_value_cansleep(hub->reset_gpio, 1); - - err = regulator_bulk_disable(hub->pdata->num_supplies, hub->supplies); - if (err) { - dev_err(hub->dev, "failed to disable supplies: %pe\n", ERR_PTR(err)); - return err; - } - - clk_disable_unprepare(hub->clk); - - hub->is_powered_on = false; - - return 0; -} - -static int __maybe_unused onboard_hub_suspend(struct device *dev) -{ - struct onboard_hub *hub = dev_get_drvdata(dev); - struct usbdev_node *node; - bool power_off = true; - - if (hub->always_powered_in_suspend) - return 0; - - mutex_lock(&hub->lock); - - list_for_each_entry(node, &hub->udev_list, list) { - if (!device_may_wakeup(node->udev->bus->controller)) - continue; - - if (usb_wakeup_enabled_descendants(node->udev)) { - power_off = false; - break; - } - } - - mutex_unlock(&hub->lock); - - if (!power_off) - return 0; - - return onboard_hub_power_off(hub); -} - -static int __maybe_unused onboard_hub_resume(struct device *dev) -{ - struct onboard_hub *hub = dev_get_drvdata(dev); - - if (hub->is_powered_on) - return 0; - - return onboard_hub_power_on(hub); -} - -static inline void get_udev_link_name(const struct usb_device *udev, char *buf, size_t size) -{ - snprintf(buf, size, "usb_dev.%s", dev_name(&udev->dev)); -} - -static int onboard_hub_add_usbdev(struct onboard_hub *hub, struct usb_device *udev) -{ - struct usbdev_node *node; - char link_name[64]; - int err; - - mutex_lock(&hub->lock); - - if (hub->going_away) { - err = -EINVAL; - goto error; - } - - node = kzalloc(sizeof(*node), GFP_KERNEL); - if (!node) { - err = -ENOMEM; - goto error; - } - - node->udev = udev; - - list_add(&node->list, &hub->udev_list); - - mutex_unlock(&hub->lock); - - get_udev_link_name(udev, link_name, sizeof(link_name)); - WARN_ON(sysfs_create_link(&hub->dev->kobj, &udev->dev.kobj, link_name)); - - return 0; - -error: - mutex_unlock(&hub->lock); - - return err; -} - -static void onboard_hub_remove_usbdev(struct onboard_hub *hub, const struct usb_device *udev) -{ - struct usbdev_node *node; - char link_name[64]; - - get_udev_link_name(udev, link_name, sizeof(link_name)); - sysfs_remove_link(&hub->dev->kobj, link_name); - - mutex_lock(&hub->lock); - - list_for_each_entry(node, &hub->udev_list, list) { - if (node->udev == udev) { - list_del(&node->list); - kfree(node); - break; - } - } - - mutex_unlock(&hub->lock); -} - -static ssize_t always_powered_in_suspend_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - const struct onboard_hub *hub = dev_get_drvdata(dev); - - return sysfs_emit(buf, "%d\n", hub->always_powered_in_suspend); -} - -static ssize_t always_powered_in_suspend_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) -{ - struct onboard_hub *hub = dev_get_drvdata(dev); - bool val; - int ret; - - ret = kstrtobool(buf, &val); - if (ret < 0) - return ret; - - hub->always_powered_in_suspend = val; - - return count; -} -static DEVICE_ATTR_RW(always_powered_in_suspend); - -static struct attribute *onboard_hub_attrs[] = { - &dev_attr_always_powered_in_suspend.attr, - NULL, -}; -ATTRIBUTE_GROUPS(onboard_hub); - -static void onboard_hub_attach_usb_driver(struct work_struct *work) -{ - int err; - - err = driver_attach(&onboard_hub_usbdev_driver.driver); - if (err) - pr_err("Failed to attach USB driver: %pe\n", ERR_PTR(err)); -} - -static int onboard_hub_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct onboard_hub *hub; - unsigned int i; - int err; - - hub = devm_kzalloc(dev, sizeof(*hub), GFP_KERNEL); - if (!hub) - return -ENOMEM; - - hub->pdata = device_get_match_data(dev); - if (!hub->pdata) - return -EINVAL; - - if (hub->pdata->num_supplies > MAX_SUPPLIES) - return dev_err_probe(dev, -EINVAL, "max %zu supplies supported!\n", - MAX_SUPPLIES); - - for (i = 0; i < hub->pdata->num_supplies; i++) - hub->supplies[i].supply = supply_names[i]; - - err = devm_regulator_bulk_get(dev, hub->pdata->num_supplies, hub->supplies); - if (err) { - dev_err(dev, "Failed to get regulator supplies: %pe\n", ERR_PTR(err)); - return err; - } - - hub->clk = devm_clk_get_optional(dev, NULL); - if (IS_ERR(hub->clk)) - return dev_err_probe(dev, PTR_ERR(hub->clk), "failed to get clock\n"); - - hub->reset_gpio = devm_gpiod_get_optional(dev, "reset", - GPIOD_OUT_HIGH); - if (IS_ERR(hub->reset_gpio)) - return dev_err_probe(dev, PTR_ERR(hub->reset_gpio), "failed to get reset GPIO\n"); - - hub->dev = dev; - mutex_init(&hub->lock); - INIT_LIST_HEAD(&hub->udev_list); - - dev_set_drvdata(dev, hub); - - err = onboard_hub_power_on(hub); - if (err) - return err; - - /* - * The USB driver might have been detached from the USB devices by - * onboard_hub_remove() (e.g. through an 'unbind' by userspace), - * make sure to re-attach it if needed. - * - * This needs to be done deferred to avoid self-deadlocks on systems - * with nested onboard hubs. - */ - schedule_work(&attach_usb_driver_work); - - return 0; -} - -static void onboard_hub_remove(struct platform_device *pdev) -{ - struct onboard_hub *hub = dev_get_drvdata(&pdev->dev); - struct usbdev_node *node; - struct usb_device *udev; - - hub->going_away = true; - - mutex_lock(&hub->lock); - - /* unbind the USB devices to avoid dangling references to this device */ - while (!list_empty(&hub->udev_list)) { - node = list_first_entry(&hub->udev_list, struct usbdev_node, list); - udev = node->udev; - - /* - * Unbinding the driver will call onboard_hub_remove_usbdev(), - * which acquires hub->lock. We must release the lock first. - */ - get_device(&udev->dev); - mutex_unlock(&hub->lock); - device_release_driver(&udev->dev); - put_device(&udev->dev); - mutex_lock(&hub->lock); - } - - mutex_unlock(&hub->lock); - - onboard_hub_power_off(hub); -} - -MODULE_DEVICE_TABLE(of, onboard_hub_match); - -static const struct dev_pm_ops __maybe_unused onboard_hub_pm_ops = { - SET_LATE_SYSTEM_SLEEP_PM_OPS(onboard_hub_suspend, onboard_hub_resume) -}; - -static struct platform_driver onboard_hub_driver = { - .probe = onboard_hub_probe, - .remove_new = onboard_hub_remove, - - .driver = { - .name = "onboard-usb-hub", - .of_match_table = onboard_hub_match, - .pm = pm_ptr(&onboard_hub_pm_ops), - .dev_groups = onboard_hub_groups, - }, -}; - -/************************** USB driver **************************/ - -#define VENDOR_ID_CYPRESS 0x04b4 -#define VENDOR_ID_GENESYS 0x05e3 -#define VENDOR_ID_MICROCHIP 0x0424 -#define VENDOR_ID_REALTEK 0x0bda -#define VENDOR_ID_TI 0x0451 -#define VENDOR_ID_VIA 0x2109 - -/* - * Returns the onboard_hub platform device that is associated with the USB - * device passed as parameter. - */ -static struct onboard_hub *_find_onboard_hub(struct device *dev) -{ - struct platform_device *pdev; - struct device_node *np; - struct onboard_hub *hub; - - pdev = of_find_device_by_node(dev->of_node); - if (!pdev) { - np = of_parse_phandle(dev->of_node, "peer-hub", 0); - if (!np) { - dev_err(dev, "failed to find device node for peer hub\n"); - return ERR_PTR(-EINVAL); - } - - pdev = of_find_device_by_node(np); - of_node_put(np); - - if (!pdev) - return ERR_PTR(-ENODEV); - } - - hub = dev_get_drvdata(&pdev->dev); - put_device(&pdev->dev); - - /* - * The presence of drvdata ('hub') indicates that the platform driver - * finished probing. This handles the case where (conceivably) we could - * be running at the exact same time as the platform driver's probe. If - * we detect the race we request probe deferral and we'll come back and - * try again. - */ - if (!hub) - return ERR_PTR(-EPROBE_DEFER); - - return hub; -} - -static int onboard_hub_usbdev_probe(struct usb_device *udev) -{ - struct device *dev = &udev->dev; - struct onboard_hub *hub; - int err; - - /* ignore supported hubs without device tree node */ - if (!dev->of_node) - return -ENODEV; - - hub = _find_onboard_hub(dev); - if (IS_ERR(hub)) - return PTR_ERR(hub); - - dev_set_drvdata(dev, hub); - - err = onboard_hub_add_usbdev(hub, udev); - if (err) - return err; - - return 0; -} - -static void onboard_hub_usbdev_disconnect(struct usb_device *udev) -{ - struct onboard_hub *hub = dev_get_drvdata(&udev->dev); - - onboard_hub_remove_usbdev(hub, udev); -} - -static const struct usb_device_id onboard_hub_id_table[] = { - { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6504) }, /* CYUSB33{0,1,2}x/CYUSB230x 3.0 */ - { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6506) }, /* CYUSB33{0,1,2}x/CYUSB230x 2.0 */ - { USB_DEVICE(VENDOR_ID_CYPRESS, 0x6570) }, /* CY7C6563x 2.0 */ - { USB_DEVICE(VENDOR_ID_GENESYS, 0x0608) }, /* Genesys Logic GL850G USB 2.0 */ - { USB_DEVICE(VENDOR_ID_GENESYS, 0x0610) }, /* Genesys Logic GL852G USB 2.0 */ - { USB_DEVICE(VENDOR_ID_GENESYS, 0x0620) }, /* Genesys Logic GL3523 USB 3.1 */ - { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2412) }, /* USB2412 USB 2.0 */ - { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2514) }, /* USB2514B USB 2.0 */ - { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2517) }, /* USB2517 USB 2.0 */ - { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x2744) }, /* USB5744 USB 2.0 */ - { USB_DEVICE(VENDOR_ID_MICROCHIP, 0x5744) }, /* USB5744 USB 3.0 */ - { USB_DEVICE(VENDOR_ID_REALTEK, 0x0411) }, /* RTS5411 USB 3.1 */ - { USB_DEVICE(VENDOR_ID_REALTEK, 0x5411) }, /* RTS5411 USB 2.1 */ - { USB_DEVICE(VENDOR_ID_REALTEK, 0x0414) }, /* RTS5414 USB 3.2 */ - { USB_DEVICE(VENDOR_ID_REALTEK, 0x5414) }, /* RTS5414 USB 2.1 */ - { USB_DEVICE(VENDOR_ID_TI, 0x8025) }, /* TI USB8020B 3.0 */ - { USB_DEVICE(VENDOR_ID_TI, 0x8027) }, /* TI USB8020B 2.0 */ - { USB_DEVICE(VENDOR_ID_TI, 0x8140) }, /* TI USB8041 3.0 */ - { USB_DEVICE(VENDOR_ID_TI, 0x8142) }, /* TI USB8041 2.0 */ - { USB_DEVICE(VENDOR_ID_VIA, 0x0817) }, /* VIA VL817 3.1 */ - { USB_DEVICE(VENDOR_ID_VIA, 0x2817) }, /* VIA VL817 2.0 */ - {} -}; -MODULE_DEVICE_TABLE(usb, onboard_hub_id_table); - -static struct usb_device_driver onboard_hub_usbdev_driver = { - .name = "onboard-usb-hub", - .probe = onboard_hub_usbdev_probe, - .disconnect = onboard_hub_usbdev_disconnect, - .generic_subclass = 1, - .supports_autosuspend = 1, - .id_table = onboard_hub_id_table, -}; - -static int __init onboard_hub_init(void) -{ - int ret; - - ret = usb_register_device_driver(&onboard_hub_usbdev_driver, THIS_MODULE); - if (ret) - return ret; - - ret = platform_driver_register(&onboard_hub_driver); - if (ret) - usb_deregister_device_driver(&onboard_hub_usbdev_driver); - - return ret; -} -module_init(onboard_hub_init); - -static void __exit onboard_hub_exit(void) -{ - usb_deregister_device_driver(&onboard_hub_usbdev_driver); - platform_driver_unregister(&onboard_hub_driver); - - cancel_work_sync(&attach_usb_driver_work); -} -module_exit(onboard_hub_exit); - -MODULE_AUTHOR("Matthias Kaehlcke <mka@chromium.org>"); -MODULE_DESCRIPTION("Driver for discrete onboard USB hubs"); -MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/misc/onboard_usb_hub.h b/drivers/usb/misc/onboard_usb_hub.h deleted file mode 100644 index b4b15d45f84d..000000000000 --- a/drivers/usb/misc/onboard_usb_hub.h +++ /dev/null @@ -1,90 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * Copyright (c) 2022, Google LLC - */ - -#ifndef _USB_MISC_ONBOARD_USB_HUB_H -#define _USB_MISC_ONBOARD_USB_HUB_H - -struct onboard_hub_pdata { - unsigned long reset_us; /* reset pulse width in us */ - unsigned int num_supplies; /* number of supplies */ -}; - -static const struct onboard_hub_pdata microchip_usb424_data = { - .reset_us = 1, - .num_supplies = 1, -}; - -static const struct onboard_hub_pdata microchip_usb5744_data = { - .reset_us = 0, - .num_supplies = 2, -}; - -static const struct onboard_hub_pdata realtek_rts5411_data = { - .reset_us = 0, - .num_supplies = 1, -}; - -static const struct onboard_hub_pdata ti_tusb8020b_data = { - .reset_us = 3000, - .num_supplies = 1, -}; - -static const struct onboard_hub_pdata ti_tusb8041_data = { - .reset_us = 3000, - .num_supplies = 1, -}; - -static const struct onboard_hub_pdata cypress_hx3_data = { - .reset_us = 10000, - .num_supplies = 2, -}; - -static const struct onboard_hub_pdata cypress_hx2vl_data = { - .reset_us = 1, - .num_supplies = 1, -}; - -static const struct onboard_hub_pdata genesys_gl850g_data = { - .reset_us = 3, - .num_supplies = 1, -}; - -static const struct onboard_hub_pdata genesys_gl852g_data = { - .reset_us = 50, - .num_supplies = 1, -}; - -static const struct onboard_hub_pdata vialab_vl817_data = { - .reset_us = 10, - .num_supplies = 1, -}; - -static const struct of_device_id onboard_hub_match[] = { - { .compatible = "usb424,2412", .data = µchip_usb424_data, }, - { .compatible = "usb424,2514", .data = µchip_usb424_data, }, - { .compatible = "usb424,2517", .data = µchip_usb424_data, }, - { .compatible = "usb424,2744", .data = µchip_usb5744_data, }, - { .compatible = "usb424,5744", .data = µchip_usb5744_data, }, - { .compatible = "usb451,8025", .data = &ti_tusb8020b_data, }, - { .compatible = "usb451,8027", .data = &ti_tusb8020b_data, }, - { .compatible = "usb451,8140", .data = &ti_tusb8041_data, }, - { .compatible = "usb451,8142", .data = &ti_tusb8041_data, }, - { .compatible = "usb4b4,6504", .data = &cypress_hx3_data, }, - { .compatible = "usb4b4,6506", .data = &cypress_hx3_data, }, - { .compatible = "usb4b4,6570", .data = &cypress_hx2vl_data, }, - { .compatible = "usb5e3,608", .data = &genesys_gl850g_data, }, - { .compatible = "usb5e3,610", .data = &genesys_gl852g_data, }, - { .compatible = "usb5e3,620", .data = &genesys_gl852g_data, }, - { .compatible = "usb5e3,626", .data = &genesys_gl852g_data, }, - { .compatible = "usbbda,411", .data = &realtek_rts5411_data, }, - { .compatible = "usbbda,5411", .data = &realtek_rts5411_data, }, - { .compatible = "usbbda,414", .data = &realtek_rts5411_data, }, - { .compatible = "usbbda,5414", .data = &realtek_rts5411_data, }, - { .compatible = "usb2109,817", .data = &vialab_vl817_data, }, - { .compatible = "usb2109,2817", .data = &vialab_vl817_data, }, - {} -}; - -#endif /* _USB_MISC_ONBOARD_USB_HUB_H */ diff --git a/drivers/usb/misc/qcom_eud.c b/drivers/usb/misc/qcom_eud.c index 26e9b8749d8a..83079c414b4f 100644 --- a/drivers/usb/misc/qcom_eud.c +++ b/drivers/usb/misc/qcom_eud.c @@ -232,14 +232,14 @@ static void eud_remove(struct platform_device *pdev) } static const struct of_device_id eud_dt_match[] = { - { .compatible = "qcom,sc7280-eud" }, + { .compatible = "qcom,eud" }, { } }; MODULE_DEVICE_TABLE(of, eud_dt_match); static struct platform_driver eud_driver = { .probe = eud_probe, - .remove_new = eud_remove, + .remove = eud_remove, .driver = { .name = "qcom_eud", .dev_groups = eud_groups, diff --git a/drivers/usb/misc/usb-ljca.c b/drivers/usb/misc/usb-ljca.c index 2d30fc1be306..c562630d862c 100644 --- a/drivers/usb/misc/usb-ljca.c +++ b/drivers/usb/misc/usb-ljca.c @@ -18,7 +18,7 @@ #include <linux/usb.h> #include <linux/usb/ljca.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> /* command flags */ #define LJCA_ACK_FLAG BIT(0) @@ -169,6 +169,7 @@ static const struct acpi_device_id ljca_gpio_hids[] = { { "INTC1096" }, { "INTC100B" }, { "INTC10D1" }, + { "INTC10B5" }, {}, }; @@ -331,14 +332,11 @@ static int ljca_send(struct ljca_adapter *adap, u8 type, u8 cmd, ret = usb_bulk_msg(adap->usb_dev, adap->tx_pipe, header, msg_len, &transferred, LJCA_WRITE_TIMEOUT_MS); - - usb_autopm_put_interface(adap->intf); - if (ret < 0) - goto out; + goto out_put; if (transferred != msg_len) { ret = -EIO; - goto out; + goto out_put; } if (ack) { @@ -346,11 +344,14 @@ static int ljca_send(struct ljca_adapter *adap, u8 type, u8 cmd, timeout); if (!ret) { ret = -ETIMEDOUT; - goto out; + goto out_put; } } ret = adap->actual_length; +out_put: + usb_autopm_put_interface(adap->intf); + out: spin_lock_irqsave(&adap->lock, flags); adap->ex_buf = NULL; @@ -371,7 +372,7 @@ int ljca_transfer(struct ljca_client *client, u8 cmd, const u8 *obuf, obuf, obuf_len, ibuf, ibuf_len, true, LJCA_WRITE_ACK_TIMEOUT_MS); } -EXPORT_SYMBOL_NS_GPL(ljca_transfer, LJCA); +EXPORT_SYMBOL_NS_GPL(ljca_transfer, "LJCA"); int ljca_transfer_noack(struct ljca_client *client, u8 cmd, const u8 *obuf, u8 obuf_len) @@ -379,7 +380,7 @@ int ljca_transfer_noack(struct ljca_client *client, u8 cmd, const u8 *obuf, return ljca_send(client->adapter, client->type, cmd, obuf, obuf_len, NULL, 0, false, LJCA_WRITE_ACK_TIMEOUT_MS); } -EXPORT_SYMBOL_NS_GPL(ljca_transfer_noack, LJCA); +EXPORT_SYMBOL_NS_GPL(ljca_transfer_noack, "LJCA"); int ljca_register_event_cb(struct ljca_client *client, ljca_event_cb_t event_cb, void *context) @@ -403,7 +404,7 @@ int ljca_register_event_cb(struct ljca_client *client, ljca_event_cb_t event_cb, return 0; } -EXPORT_SYMBOL_NS_GPL(ljca_register_event_cb, LJCA); +EXPORT_SYMBOL_NS_GPL(ljca_register_event_cb, "LJCA"); void ljca_unregister_event_cb(struct ljca_client *client) { @@ -416,7 +417,7 @@ void ljca_unregister_event_cb(struct ljca_client *client) spin_unlock_irqrestore(&client->event_cb_lock, flags); } -EXPORT_SYMBOL_NS_GPL(ljca_unregister_event_cb, LJCA); +EXPORT_SYMBOL_NS_GPL(ljca_unregister_event_cb, "LJCA"); static int ljca_match_device_ids(struct acpi_device *adev, void *data) { @@ -810,6 +811,14 @@ static int ljca_probe(struct usb_interface *interface, if (ret) goto err_free; + /* + * This works around problems with ov2740 initialization on some + * Lenovo platforms. The autosuspend delay, has to be smaller than + * the delay after setting the reset_gpio line in ov2740_resume(). + * Otherwise the sensor randomly fails to initialize. + */ + pm_runtime_set_autosuspend_delay(&usb_dev->dev, 10); + usb_enable_autosuspend(usb_dev); return 0; diff --git a/drivers/usb/misc/usb251xb.c b/drivers/usb/misc/usb251xb.c index 7da404f55a6d..4fb453ca5450 100644 --- a/drivers/usb/misc/usb251xb.c +++ b/drivers/usb/misc/usb251xb.c @@ -382,11 +382,9 @@ static void usb251xb_get_ports_field(struct usb251xb *hub, bool ds_only, u8 *fld) { struct device *dev = hub->dev; - struct property *prop; - const __be32 *p; u32 port; - of_property_for_each_u32(dev->of_node, prop_name, prop, p, port) { + of_property_for_each_u32(dev->of_node, prop_name, port) { if ((port >= ds_only ? 1 : 0) && (port <= port_cnt)) *fld |= BIT(port); else @@ -638,10 +636,8 @@ static int usb251xb_probe(struct usb251xb *hub) if (np && usb_data) { err = usb251xb_get_ofdata(hub, usb_data); - if (err) { - dev_err(dev, "failed to get ofdata: %d\n", err); - return err; - } + if (err) + return dev_err_probe(dev, err, "failed to get ofdata\n"); } /* @@ -726,15 +722,15 @@ static int __maybe_unused usb251xb_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(usb251xb_pm_ops, usb251xb_suspend, usb251xb_resume); static const struct i2c_device_id usb251xb_id[] = { - { "usb2422", 0 }, - { "usb2512b", 0 }, - { "usb2512bi", 0 }, - { "usb2513b", 0 }, - { "usb2513bi", 0 }, - { "usb2514b", 0 }, - { "usb2514bi", 0 }, - { "usb2517", 0 }, - { "usb2517i", 0 }, + { "usb2422" }, + { "usb2512b" }, + { "usb2512bi" }, + { "usb2513b" }, + { "usb2513bi" }, + { "usb2514b" }, + { "usb2514bi" }, + { "usb2517" }, + { "usb2517i" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, usb251xb_id); diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index 72765077932c..322e59381b78 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -390,7 +390,7 @@ static SIMPLE_DEV_PM_OPS(usb3503_platform_pm_ops, usb3503_platform_suspend, usb3503_platform_resume); static const struct i2c_device_id usb3503_id[] = { - { USB3503_I2C_NAME, 0 }, + { USB3503_I2C_NAME }, { } }; MODULE_DEVICE_TABLE(i2c, usb3503_id); @@ -423,7 +423,7 @@ static struct platform_driver usb3503_platform_driver = { .pm = pm_ptr(&usb3503_platform_pm_ops), }, .probe = usb3503_platform_probe, - .remove_new = usb3503_platform_remove, + .remove = usb3503_platform_remove, }; static int __init usb3503_init(void) diff --git a/drivers/usb/misc/usb4604.c b/drivers/usb/misc/usb4604.c index 065e269ba4e3..c9a2fb3518ae 100644 --- a/drivers/usb/misc/usb4604.c +++ b/drivers/usb/misc/usb4604.c @@ -135,7 +135,7 @@ static SIMPLE_DEV_PM_OPS(usb4604_i2c_pm_ops, usb4604_i2c_suspend, usb4604_i2c_resume); static const struct i2c_device_id usb4604_id[] = { - { "usb4604", 0 }, + { "usb4604" }, { } }; MODULE_DEVICE_TABLE(i2c, usb4604_id); diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index caf65f8294db..5c92c8d8e283 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -592,7 +592,7 @@ struct sg_timeout { static void sg_timeout(struct timer_list *t) { - struct sg_timeout *timeout = from_timer(timeout, t, timer); + struct sg_timeout *timeout = timer_container_of(timeout, t, timer); usb_sg_cancel(timeout->req); } @@ -626,11 +626,11 @@ static int perform_sglist( mod_timer(&timeout.timer, jiffies + msecs_to_jiffies(SIMPLE_IO_TIMEOUT)); usb_sg_wait(req); - if (!del_timer_sync(&timeout.timer)) + if (!timer_delete_sync(&timeout.timer)) retval = -ETIMEDOUT; else retval = req->status; - destroy_timer_on_stack(&timeout.timer); + timer_destroy_on_stack(&timeout.timer); /* FIXME check resulting data pattern */ @@ -2021,7 +2021,8 @@ static struct urb *iso_alloc_urb( for (i = 0; i < packets; i++) { /* here, only the last packet will be short */ - urb->iso_frame_desc[i].length = min((unsigned) bytes, maxp); + urb->iso_frame_desc[i].length = min_t(unsigned int, + bytes, maxp); bytes -= urb->iso_frame_desc[i].length; urb->iso_frame_desc[i].offset = maxp * i; diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index b00d92db5dfd..b26c1d382d59 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -677,7 +677,7 @@ static int uss720_probe(struct usb_interface *intf, struct parport_uss720_private *priv; struct parport *pp; unsigned char reg; - int i; + int ret; dev_dbg(&intf->dev, "probe: vendor id 0x%x, device id 0x%x\n", le16_to_cpu(usbdev->descriptor.idVendor), @@ -688,12 +688,12 @@ static int uss720_probe(struct usb_interface *intf, usb_put_dev(usbdev); return -ENODEV; } - i = usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 2); - dev_dbg(&intf->dev, "set interface result %d\n", i); + ret = usb_set_interface(usbdev, intf->altsetting->desc.bInterfaceNumber, 2); + dev_dbg(&intf->dev, "set interface result %d\n", ret); interface = intf->cur_altsetting; - if (interface->desc.bNumEndpoints < 3) { + if (interface->desc.bNumEndpoints < 2) { usb_put_dev(usbdev); return -ENODEV; } @@ -719,18 +719,27 @@ static int uss720_probe(struct usb_interface *intf, priv->pp = pp; pp->private_data = priv; - pp->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_ECP | PARPORT_MODE_COMPAT; + pp->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP | PARPORT_MODE_COMPAT; + if (interface->desc.bNumEndpoints >= 3) + pp->modes |= PARPORT_MODE_ECP; + pp->dev = &usbdev->dev; /* set the USS720 control register to manual mode, no ECP compression, enable all ints */ set_1284_register(pp, 7, 0x00, GFP_KERNEL); set_1284_register(pp, 6, 0x30, GFP_KERNEL); /* PS/2 mode */ set_1284_register(pp, 2, 0x0c, GFP_KERNEL); - /* debugging */ - get_1284_register(pp, 0, ®, GFP_KERNEL); + + /* The Belkin F5U002 Rev 2 P80453-B USB parallel port adapter shares the + * device ID 050d:0002 with some other device that works with this + * driver, but it itself does not. Detect and handle the bad cable + * here. */ + ret = get_1284_register(pp, 0, ®, GFP_KERNEL); dev_dbg(&intf->dev, "reg: %7ph\n", priv->reg); + if (ret < 0) + return ret; - i = usb_find_last_int_in_endpoint(interface, &epd); - if (!i) { + ret = usb_find_last_int_in_endpoint(interface, &epd); + if (!ret) { dev_dbg(&intf->dev, "epaddr %d interval %d\n", epd->bEndpointAddress, epd->bInterval); } @@ -766,14 +775,15 @@ static void uss720_disconnect(struct usb_interface *intf) /* table of cables that work through this driver */ static const struct usb_device_id uss720_table[] = { - { USB_DEVICE(0x047e, 0x1001) }, - { USB_DEVICE(0x04b8, 0x0002) }, - { USB_DEVICE(0x04b8, 0x0003) }, + { USB_DEVICE(0x047e, 0x1001) }, /* Infowave 901-0030 */ + { USB_DEVICE(0x04b8, 0x0002) }, /* Epson CAEUL0002 ISD-103 */ + { USB_DEVICE(0x04b8, 0x0003) }, /* Epson ISD-101 */ { USB_DEVICE(0x050d, 0x0002) }, - { USB_DEVICE(0x050d, 0x1202) }, + { USB_DEVICE(0x050d, 0x1202) }, /* Belkin F5U120-PC */ { USB_DEVICE(0x0557, 0x2001) }, - { USB_DEVICE(0x05ab, 0x0002) }, - { USB_DEVICE(0x06c6, 0x0100) }, + { USB_DEVICE(0x05ab, 0x0002) }, /* Belkin F5U002 ISD-101 */ + { USB_DEVICE(0x05ab, 0x1001) }, /* Belkin F5U002 P80453-A */ + { USB_DEVICE(0x06c6, 0x0100) }, /* Infowave ISD-103 */ { USB_DEVICE(0x0729, 0x1284) }, { USB_DEVICE(0x1293, 0x0002) }, { } /* Terminating entry */ diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 9a0649d23693..70dff0db5354 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -34,8 +34,6 @@ #define YUREX_BUF_SIZE 8 #define YUREX_WRITE_TIMEOUT (HZ*2) -#define MAX_S64_STRLEN 20 /* {-}922337203685477580{7,8} */ - /* table of devices that work with this driver */ static struct usb_device_id yurex_table[] = { { USB_DEVICE(YUREX_VENDOR_ID, YUREX_PRODUCT_ID) }, @@ -402,8 +400,8 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos) { struct usb_yurex *dev; - int len = 0; - char in_buffer[MAX_S64_STRLEN]; + int len; + char in_buffer[20]; unsigned long flags; dev = file->private_data; @@ -414,16 +412,14 @@ static ssize_t yurex_read(struct file *file, char __user *buffer, size_t count, return -ENODEV; } - if (WARN_ON_ONCE(dev->bbu > S64_MAX || dev->bbu < S64_MIN)) { - mutex_unlock(&dev->io_mutex); - return -EIO; - } - spin_lock_irqsave(&dev->lock, flags); - scnprintf(in_buffer, MAX_S64_STRLEN, "%lld\n", dev->bbu); + len = snprintf(in_buffer, 20, "%lld\n", dev->bbu); spin_unlock_irqrestore(&dev->lock, flags); mutex_unlock(&dev->io_mutex); + if (WARN_ON_ONCE(len >= sizeof(in_buffer))) + return -EIO; + return simple_read_from_buffer(buffer, count, ppos, in_buffer, len); } @@ -445,7 +441,10 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer, if (count == 0) goto error; - mutex_lock(&dev->io_mutex); + retval = mutex_lock_interruptible(&dev->io_mutex); + if (retval < 0) + return -EINTR; + if (dev->disconnected) { /* already disconnected */ mutex_unlock(&dev->io_mutex); retval = -ENODEV; @@ -511,8 +510,11 @@ static ssize_t yurex_write(struct file *file, const char __user *user_buffer, __func__, retval); goto error; } - if (set && timeout) + if (set && timeout) { + spin_lock_irq(&dev->lock); dev->bbu = c2; + spin_unlock_irq(&dev->lock); + } return timeout ? count : -EIO; error: @@ -531,4 +533,5 @@ static const struct file_operations yurex_fops = { module_usb_driver(yurex_driver); +MODULE_DESCRIPTION("USB YUREX driver support"); MODULE_LICENSE("GPL"); |