diff options
Diffstat (limited to 'drivers/usb/gadget/printer.c')
| -rw-r--r-- | drivers/usb/gadget/printer.c | 854 |
1 files changed, 284 insertions, 570 deletions
diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c index 2c32bd08ee7..6474081dcba 100644 --- a/drivers/usb/gadget/printer.c +++ b/drivers/usb/gadget/printer.c @@ -8,15 +8,6 @@ * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/module.h> @@ -25,13 +16,12 @@ #include <linux/ioport.h> #include <linux/sched.h> #include <linux/slab.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/timer.h> #include <linux/list.h> #include <linux/interrupt.h> -#include <linux/utsname.h> #include <linux/device.h> #include <linux/moduleparam.h> #include <linux/fs.h> @@ -43,19 +33,22 @@ #include <asm/byteorder.h> #include <linux/io.h> #include <linux/irq.h> -#include <asm/system.h> #include <linux/uaccess.h> #include <asm/unaligned.h> #include <linux/usb/ch9.h> +#include <linux/usb/composite.h> #include <linux/usb/gadget.h> #include <linux/usb/g_printer.h> #include "gadget_chips.h" +USB_GADGET_COMPOSITE_OPTIONS(); + #define DRIVER_DESC "Printer Gadget" #define DRIVER_VERSION "2007 OCT 06" +static DEFINE_MUTEX(printer_mutex); static const char shortname [] = "printer"; static const char driver_desc [] = DRIVER_DESC; @@ -68,14 +61,11 @@ static struct class *usb_gadget_class; struct printer_dev { spinlock_t lock; /* lock this structure */ /* lock buffer lists during read/write calls */ - spinlock_t lock_printer_io; + struct mutex lock_printer_io; struct usb_gadget *gadget; - struct usb_request *req; /* for control responses */ - u8 config; s8 interface; struct usb_ep *in_ep, *out_ep; - const struct usb_endpoint_descriptor - *in, *out; + struct list_head rx_reqs; /* List of free RX structs */ struct list_head rx_reqs_active; /* List of Active RX xfers */ struct list_head rx_buffers; /* List of completed xfers */ @@ -96,6 +86,7 @@ struct printer_dev { struct device *pdev; u8 printer_cdev_open; wait_queue_head_t wait; + struct usb_function function; }; static struct printer_dev usb_printer_gadget; @@ -111,36 +102,15 @@ static struct printer_dev usb_printer_gadget; #define PRINTER_VENDOR_NUM 0x0525 /* NetChip */ #define PRINTER_PRODUCT_NUM 0xa4a8 /* Linux-USB Printer Gadget */ -/* Some systems will want different product identifers published in the +/* Some systems will want different product identifiers published in the * device descriptor, either numbers or strings or both. These string * parameters are in UTF-8 (superset of ASCII's 7 bit characters). */ -static ushort __initdata idVendor; -module_param(idVendor, ushort, S_IRUGO); -MODULE_PARM_DESC(idVendor, "USB Vendor ID"); - -static ushort __initdata idProduct; -module_param(idProduct, ushort, S_IRUGO); -MODULE_PARM_DESC(idProduct, "USB Product ID"); - -static ushort __initdata bcdDevice; -module_param(bcdDevice, ushort, S_IRUGO); -MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)"); - -static char *__initdata iManufacturer; -module_param(iManufacturer, charp, S_IRUGO); -MODULE_PARM_DESC(iManufacturer, "USB Manufacturer string"); - -static char *__initdata iProduct; -module_param(iProduct, charp, S_IRUGO); -MODULE_PARM_DESC(iProduct, "USB Product string"); - -static char *__initdata iSerialNum; -module_param(iSerialNum, charp, S_IRUGO); +module_param_named(iSerialNum, coverwrite.serial_number, charp, S_IRUGO); MODULE_PARM_DESC(iSerialNum, "1"); -static char *__initdata iPNPstring; +static char *iPNPstring; module_param(iPNPstring, charp, S_IRUGO); MODULE_PARM_DESC(iPNPstring, "MFG:linux;MDL:g_printer;CLS:PRINTER;SN:1;"); @@ -150,101 +120,32 @@ module_param(qlen, uint, S_IRUGO|S_IWUSR); #define QLEN qlen -#ifdef CONFIG_USB_GADGET_DUALSPEED -#define DEVSPEED USB_SPEED_HIGH -#else /* full speed (low speed doesn't do bulk) */ -#define DEVSPEED USB_SPEED_FULL -#endif - /*-------------------------------------------------------------------------*/ -#define xprintk(d, level, fmt, args...) \ - printk(level "%s: " fmt, DRIVER_DESC, ## args) - -#ifdef DEBUG -#define DBG(dev, fmt, args...) \ - xprintk(dev, KERN_DEBUG, fmt, ## args) -#else -#define DBG(dev, fmt, args...) \ - do { } while (0) -#endif /* DEBUG */ - -#ifdef VERBOSE -#define VDBG(dev, fmt, args...) \ - xprintk(dev, KERN_DEBUG, fmt, ## args) -#else -#define VDBG(dev, fmt, args...) \ - do { } while (0) -#endif /* VERBOSE */ - -#define ERROR(dev, fmt, args...) \ - xprintk(dev, KERN_ERR, fmt, ## args) -#define WARN(dev, fmt, args...) \ - xprintk(dev, KERN_WARNING, fmt, ## args) -#define INFO(dev, fmt, args...) \ - xprintk(dev, KERN_INFO, fmt, ## args) - -/*-------------------------------------------------------------------------*/ - -/* USB DRIVER HOOKUP (to the hardware driver, below us), mostly - * ep0 implementation: descriptors, config management, setup(). - * also optional class-specific notification interrupt transfer. - */ - /* * DESCRIPTORS ... most are static, but strings and (full) configuration * descriptors are built on demand. */ -#define STRING_MANUFACTURER 1 -#define STRING_PRODUCT 2 -#define STRING_SERIALNUM 3 - /* holds our biggest descriptor */ #define USB_DESC_BUFSIZE 256 #define USB_BUFSIZE 8192 -/* This device advertises one configuration. */ -#define DEV_CONFIG_VALUE 1 -#define PRINTER_INTERFACE 0 - static struct usb_device_descriptor device_desc = { .bLength = sizeof device_desc, .bDescriptorType = USB_DT_DEVICE, - .bcdUSB = __constant_cpu_to_le16(0x0200), + .bcdUSB = cpu_to_le16(0x0200), .bDeviceClass = USB_CLASS_PER_INTERFACE, .bDeviceSubClass = 0, .bDeviceProtocol = 0, - .idVendor = __constant_cpu_to_le16(PRINTER_VENDOR_NUM), - .idProduct = __constant_cpu_to_le16(PRINTER_PRODUCT_NUM), - .iManufacturer = STRING_MANUFACTURER, - .iProduct = STRING_PRODUCT, - .iSerialNumber = STRING_SERIALNUM, + .idVendor = cpu_to_le16(PRINTER_VENDOR_NUM), + .idProduct = cpu_to_le16(PRINTER_PRODUCT_NUM), .bNumConfigurations = 1 }; -static struct usb_otg_descriptor otg_desc = { - .bLength = sizeof otg_desc, - .bDescriptorType = USB_DT_OTG, - .bmAttributes = USB_OTG_SRP -}; - -static struct usb_config_descriptor config_desc = { - .bLength = sizeof config_desc, - .bDescriptorType = USB_DT_CONFIG, - - /* compute wTotalLength on the fly */ - .bNumInterfaces = 1, - .bConfigurationValue = DEV_CONFIG_VALUE, - .iConfiguration = 0, - .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, - .bMaxPower = 1 /* Self-Powered */ -}; - static struct usb_interface_descriptor intf_desc = { .bLength = sizeof intf_desc, .bDescriptorType = USB_DT_INTERFACE, - .bInterfaceNumber = PRINTER_INTERFACE, .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_PRINTER, .bInterfaceSubClass = 1, /* Printer Sub-Class */ @@ -266,16 +167,13 @@ static struct usb_endpoint_descriptor fs_ep_out_desc = { .bmAttributes = USB_ENDPOINT_XFER_BULK }; -static const struct usb_descriptor_header *fs_printer_function [11] = { - (struct usb_descriptor_header *) &otg_desc, +static struct usb_descriptor_header *fs_printer_function[] = { (struct usb_descriptor_header *) &intf_desc, (struct usb_descriptor_header *) &fs_ep_in_desc, (struct usb_descriptor_header *) &fs_ep_out_desc, NULL }; -#ifdef CONFIG_USB_GADGET_DUALSPEED - /* * usb 2.0 devices need to expose both high speed and full speed * descriptors, unless they only run at full speed. @@ -285,47 +183,49 @@ static struct usb_endpoint_descriptor hs_ep_in_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16(512) + .wMaxPacketSize = cpu_to_le16(512) }; static struct usb_endpoint_descriptor hs_ep_out_desc = { .bLength = USB_DT_ENDPOINT_SIZE, .bDescriptorType = USB_DT_ENDPOINT, .bmAttributes = USB_ENDPOINT_XFER_BULK, - .wMaxPacketSize = __constant_cpu_to_le16(512) + .wMaxPacketSize = cpu_to_le16(512) }; static struct usb_qualifier_descriptor dev_qualifier = { .bLength = sizeof dev_qualifier, .bDescriptorType = USB_DT_DEVICE_QUALIFIER, - .bcdUSB = __constant_cpu_to_le16(0x0200), + .bcdUSB = cpu_to_le16(0x0200), .bDeviceClass = USB_CLASS_PRINTER, .bNumConfigurations = 1 }; -static const struct usb_descriptor_header *hs_printer_function [11] = { - (struct usb_descriptor_header *) &otg_desc, +static struct usb_descriptor_header *hs_printer_function[] = { (struct usb_descriptor_header *) &intf_desc, (struct usb_descriptor_header *) &hs_ep_in_desc, (struct usb_descriptor_header *) &hs_ep_out_desc, NULL }; -/* maxpacket and other transfer characteristics vary by speed. */ -#define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs)) - -#else +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + .bmAttributes = USB_OTG_SRP, +}; -/* if there's no high speed support, maxpacket doesn't change. */ -#define ep_desc(g, hs, fs) (((void)(g)), (fs)) +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; -#endif /* !CONFIG_USB_GADGET_DUALSPEED */ +/* maxpacket and other transfer characteristics vary by speed. */ +#define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs)) /*-------------------------------------------------------------------------*/ /* descriptors that are built on-demand */ -static char manufacturer [50]; static char product_desc [40] = DRIVER_DESC; static char serial_num [40] = "1"; static char pnp_string [1024] = @@ -333,17 +233,22 @@ static char pnp_string [1024] = /* static strings, in UTF-8 */ static struct usb_string strings [] = { - { STRING_MANUFACTURER, manufacturer, }, - { STRING_PRODUCT, product_desc, }, - { STRING_SERIALNUM, serial_num, }, + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = product_desc, + [USB_GADGET_SERIAL_IDX].s = serial_num, { } /* end of list */ }; -static struct usb_gadget_strings stringtab = { +static struct usb_gadget_strings stringtab_dev = { .language = 0x0409, /* en-us */ .strings = strings, }; +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + /*-------------------------------------------------------------------------*/ static struct usb_request * @@ -390,9 +295,12 @@ static void rx_complete(struct usb_ep *ep, struct usb_request *req) /* normal completion */ case 0: - list_add_tail(&req->list, &dev->rx_buffers); - wake_up_interruptible(&dev->rx_wait); - DBG(dev, "G_Printer : rx length %d\n", req->actual); + if (req->actual > 0) { + list_add_tail(&req->list, &dev->rx_buffers); + DBG(dev, "G_Printer : rx length %d\n", req->actual); + } else { + list_add(&req->list, &dev->rx_reqs); + } break; /* software-driven interface shutdown */ @@ -417,6 +325,8 @@ static void rx_complete(struct usb_ep *ep, struct usb_request *req) list_add(&req->list, &dev->rx_reqs); break; } + + wake_up_interruptible(&dev->rx_wait); spin_unlock_irqrestore(&dev->lock, flags); } @@ -457,6 +367,7 @@ printer_open(struct inode *inode, struct file *fd) unsigned long flags; int ret = -EBUSY; + mutex_lock(&printer_mutex); dev = container_of(inode->i_cdev, struct printer_dev, printer_cdev); spin_lock_irqsave(&dev->lock, flags); @@ -472,7 +383,7 @@ printer_open(struct inode *inode, struct file *fd) spin_unlock_irqrestore(&dev->lock, flags); DBG(dev, "printer_open returned %x\n", ret); - + mutex_unlock(&printer_mutex); return ret; } @@ -494,6 +405,44 @@ printer_close(struct inode *inode, struct file *fd) return 0; } +/* This function must be called with interrupts turned off. */ +static void +setup_rx_reqs(struct printer_dev *dev) +{ + struct usb_request *req; + + while (likely(!list_empty(&dev->rx_reqs))) { + int error; + + req = container_of(dev->rx_reqs.next, + struct usb_request, list); + list_del_init(&req->list); + + /* The USB Host sends us whatever amount of data it wants to + * so we always set the length field to the full USB_BUFSIZE. + * If the amount of data is more than the read() caller asked + * for it will be stored in the request buffer until it is + * asked for by read(). + */ + req->length = USB_BUFSIZE; + req->complete = rx_complete; + + /* here, we unlock, and only unlock, to avoid deadlock. */ + spin_unlock(&dev->lock); + error = usb_ep_queue(dev->out_ep, req, GFP_ATOMIC); + spin_lock(&dev->lock); + if (error) { + DBG(dev, "rx submit --> %d\n", error); + list_add(&req->list, &dev->rx_reqs); + break; + } + /* if the req is empty, then add it into dev->rx_reqs_active. */ + else if (list_empty(&req->list)) { + list_add(&req->list, &dev->rx_reqs_active); + } + } +} + static ssize_t printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) { @@ -514,7 +463,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) DBG(dev, "printer_read trying to read %d bytes\n", (int)len); - spin_lock(&dev->lock_printer_io); + mutex_lock(&dev->lock_printer_io); spin_lock_irqsave(&dev->lock, flags); /* We will use this flag later to check if a printer reset happened @@ -522,31 +471,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) */ dev->reset_printer = 0; - while (likely(!list_empty(&dev->rx_reqs))) { - int error; - - req = container_of(dev->rx_reqs.next, - struct usb_request, list); - list_del_init(&req->list); - - /* The USB Host sends us whatever amount of data it wants to - * so we always set the length field to the full USB_BUFSIZE. - * If the amount of data is more than the read() caller asked - * for it will be stored in the request buffer until it is - * asked for by read(). - */ - req->length = USB_BUFSIZE; - req->complete = rx_complete; - - error = usb_ep_queue(dev->out_ep, req, GFP_ATOMIC); - if (error) { - DBG(dev, "rx submit --> %d\n", error); - list_add(&req->list, &dev->rx_reqs); - break; - } else { - list_add(&req->list, &dev->rx_reqs_active); - } - } + setup_rx_reqs(dev); bytes_copied = 0; current_rx_req = dev->current_rx_req; @@ -572,7 +497,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) * call or not. */ if (fd->f_flags & (O_NONBLOCK|O_NDELAY)) { - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); return -EAGAIN; } @@ -615,11 +540,11 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) spin_lock_irqsave(&dev->lock, flags); - /* We've disconnected or reset free the req and buffer */ + /* We've disconnected or reset so return. */ if (dev->reset_printer) { - printer_req_free(dev->out_ep, current_rx_req); + list_add(¤t_rx_req->list, &dev->rx_reqs); spin_unlock_irqrestore(&dev->lock, flags); - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); return -EAGAIN; } @@ -644,7 +569,7 @@ printer_read(struct file *fd, char __user *buf, size_t len, loff_t *ptr) dev->current_rx_buf = current_rx_buf; spin_unlock_irqrestore(&dev->lock, flags); - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); DBG(dev, "printer_read returned %d bytes\n", (int)bytes_copied); @@ -668,7 +593,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) if (len == 0) return -EINVAL; - spin_lock(&dev->lock_printer_io); + mutex_lock(&dev->lock_printer_io); spin_lock_irqsave(&dev->lock, flags); /* Check if a printer reset happens while we have interrupts on */ @@ -684,7 +609,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) * a NON-Blocking call or not. */ if (fd->f_flags & (O_NONBLOCK|O_NDELAY)) { - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); return -EAGAIN; } @@ -723,7 +648,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) if (copy_from_user(req->buf, buf, size)) { list_add(&req->list, &dev->tx_reqs); - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); return bytes_copied; } @@ -735,16 +660,16 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) /* We've disconnected or reset so free the req and buffer */ if (dev->reset_printer) { - printer_req_free(dev->in_ep, req); + list_add(&req->list, &dev->tx_reqs); spin_unlock_irqrestore(&dev->lock, flags); - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); return -EAGAIN; } if (usb_ep_queue(dev->in_ep, req, GFP_ATOMIC)) { list_add(&req->list, &dev->tx_reqs); spin_unlock_irqrestore(&dev->lock, flags); - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); return -EAGAIN; } @@ -753,7 +678,7 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) } spin_unlock_irqrestore(&dev->lock, flags); - spin_unlock(&dev->lock_printer_io); + mutex_unlock(&dev->lock_printer_io); DBG(dev, "printer_write sent %d bytes\n", (int)bytes_copied); @@ -765,12 +690,14 @@ printer_write(struct file *fd, const char __user *buf, size_t len, loff_t *ptr) } static int -printer_fsync(struct file *fd, struct dentry *dentry, int datasync) +printer_fsync(struct file *fd, loff_t start, loff_t end, int datasync) { struct printer_dev *dev = fd->private_data; + struct inode *inode = file_inode(fd); unsigned long flags; int tx_list_empty; + mutex_lock(&inode->i_mutex); spin_lock_irqsave(&dev->lock, flags); tx_list_empty = (likely(list_empty(&dev->tx_reqs))); spin_unlock_irqrestore(&dev->lock, flags); @@ -780,6 +707,7 @@ printer_fsync(struct file *fd, struct dentry *dentry, int datasync) wait_event_interruptible(dev->tx_flush_wait, (likely(list_empty(&dev->tx_reqs_active)))); } + mutex_unlock(&inode->i_mutex); return 0; } @@ -791,6 +719,12 @@ printer_poll(struct file *fd, poll_table *wait) unsigned long flags; int status = 0; + mutex_lock(&dev->lock_printer_io); + spin_lock_irqsave(&dev->lock, flags); + setup_rx_reqs(dev); + spin_unlock_irqrestore(&dev->lock, flags); + mutex_unlock(&dev->lock_printer_io); + poll_wait(fd, &dev->rx_wait, wait); poll_wait(fd, &dev->tx_wait, wait); @@ -798,7 +732,8 @@ printer_poll(struct file *fd, poll_table *wait) if (likely(!list_empty(&dev->tx_reqs))) status |= POLLOUT | POLLWRNORM; - if (likely(!list_empty(&dev->rx_buffers))) + if (likely(dev->current_rx_bytes) || + likely(!list_empty(&dev->rx_buffers))) status |= POLLIN | POLLRDNORM; spin_unlock_irqrestore(&dev->lock, flags); @@ -806,9 +741,8 @@ printer_poll(struct file *fd, poll_table *wait) return status; } -static int -printer_ioctl(struct inode *inode, struct file *fd, unsigned int code, - unsigned long arg) +static long +printer_ioctl(struct file *fd, unsigned int code, unsigned long arg) { struct printer_dev *dev = fd->private_data; unsigned long flags; @@ -840,15 +774,16 @@ printer_ioctl(struct inode *inode, struct file *fd, unsigned int code, } /* used after endpoint configuration */ -static struct file_operations printer_io_operations = { +static const struct file_operations printer_io_operations = { .owner = THIS_MODULE, .open = printer_open, .read = printer_read, .write = printer_write, .fsync = printer_fsync, .poll = printer_poll, - .ioctl = printer_ioctl, - .release = printer_close + .unlocked_ioctl = printer_ioctl, + .release = printer_close, + .llseek = noop_llseek, }; /*-------------------------------------------------------------------------*/ @@ -858,19 +793,20 @@ set_printer_interface(struct printer_dev *dev) { int result = 0; - dev->in = ep_desc(dev->gadget, &hs_ep_in_desc, &fs_ep_in_desc); + dev->in_ep->desc = ep_desc(dev->gadget, &hs_ep_in_desc, &fs_ep_in_desc); dev->in_ep->driver_data = dev; - dev->out = ep_desc(dev->gadget, &hs_ep_out_desc, &fs_ep_out_desc); + dev->out_ep->desc = ep_desc(dev->gadget, &hs_ep_out_desc, + &fs_ep_out_desc); dev->out_ep->driver_data = dev; - result = usb_ep_enable(dev->in_ep, dev->in); + result = usb_ep_enable(dev->in_ep); if (result != 0) { DBG(dev, "enable %s --> %d\n", dev->in_ep->name, result); goto done; } - result = usb_ep_enable(dev->out_ep, dev->out); + result = usb_ep_enable(dev->out_ep); if (result != 0) { DBG(dev, "enable %s --> %d\n", dev->in_ep->name, result); goto done; @@ -881,8 +817,8 @@ done: if (result != 0) { (void) usb_ep_disable(dev->in_ep); (void) usb_ep_disable(dev->out_ep); - dev->in = NULL; - dev->out = NULL; + dev->in_ep->desc = NULL; + dev->out_ep->desc = NULL; } /* caller is responsible for cleanup on error */ @@ -894,136 +830,32 @@ static void printer_reset_interface(struct printer_dev *dev) if (dev->interface < 0) return; - DBG(dev, "%s\n", __FUNCTION__); + DBG(dev, "%s\n", __func__); - if (dev->in) + if (dev->in_ep->desc) usb_ep_disable(dev->in_ep); - if (dev->out) + if (dev->out_ep->desc) usb_ep_disable(dev->out_ep); + dev->in_ep->desc = NULL; + dev->out_ep->desc = NULL; dev->interface = -1; } -/* change our operational config. must agree with the code - * that returns config descriptors, and altsetting code. - */ -static int -printer_set_config(struct printer_dev *dev, unsigned number) -{ - int result = 0; - struct usb_gadget *gadget = dev->gadget; - - if (gadget_is_sa1100(gadget) && dev->config) { - /* tx fifo is full, but we can't clear it...*/ - INFO(dev, "can't change configurations\n"); - return -ESPIPE; - } - - switch (number) { - case DEV_CONFIG_VALUE: - result = 0; - break; - default: - result = -EINVAL; - /* FALL THROUGH */ - case 0: - break; - } - - if (result) { - usb_gadget_vbus_draw(dev->gadget, - dev->gadget->is_otg ? 8 : 100); - } else { - char *speed; - unsigned power; - - power = 2 * config_desc.bMaxPower; - usb_gadget_vbus_draw(dev->gadget, power); - - switch (gadget->speed) { - case USB_SPEED_FULL: speed = "full"; break; -#ifdef CONFIG_USB_GADGET_DUALSPEED - case USB_SPEED_HIGH: speed = "high"; break; -#endif - default: speed = "?"; break; - } - - dev->config = number; - INFO(dev, "%s speed config #%d: %d mA, %s\n", - speed, number, power, driver_desc); - } - return result; -} - -static int -config_buf(enum usb_device_speed speed, u8 *buf, u8 type, unsigned index, - int is_otg) -{ - int len; - const struct usb_descriptor_header **function; -#ifdef CONFIG_USB_GADGET_DUALSPEED - int hs = (speed == USB_SPEED_HIGH); - - if (type == USB_DT_OTHER_SPEED_CONFIG) - hs = !hs; - - if (hs) { - function = hs_printer_function; - } else { - function = fs_printer_function; - } -#else - function = fs_printer_function; -#endif - - if (index >= device_desc.bNumConfigurations) - return -EINVAL; - - /* for now, don't advertise srp-only devices */ - if (!is_otg) - function++; - - len = usb_gadget_config_buf(&config_desc, buf, USB_DESC_BUFSIZE, - function); - if (len < 0) - return len; - ((struct usb_config_descriptor *) buf)->bDescriptorType = type; - return len; -} - /* Change our operational Interface. */ -static int -set_interface(struct printer_dev *dev, unsigned number) +static int set_interface(struct printer_dev *dev, unsigned number) { int result = 0; - if (gadget_is_sa1100(dev->gadget) && dev->interface < 0) { - /* tx fifo is full, but we can't clear it...*/ - INFO(dev, "can't change interfaces\n"); - return -ESPIPE; - } - /* Free the current interface */ - switch (dev->interface) { - case PRINTER_INTERFACE: - printer_reset_interface(dev); - break; - } + printer_reset_interface(dev); - switch (number) { - case PRINTER_INTERFACE: - result = set_printer_interface(dev); - if (result) { - printer_reset_interface(dev); - } else { - dev->interface = PRINTER_INTERFACE; - } - break; - default: - result = -EINVAL; - /* FALL THROUGH */ - } + result = set_printer_interface(dev); + if (result) + printer_reset_interface(dev); + else + dev->interface = number; if (!result) INFO(dev, "Using interface %x\n", number); @@ -1031,14 +863,6 @@ set_interface(struct printer_dev *dev, unsigned number) return result; } -static void printer_setup_complete(struct usb_ep *ep, struct usb_request *req) -{ - if (req->status || req->actual != req->length) - DBG((struct printer_dev *) ep->driver_data, - "setup complete --> %d, %d/%d\n", - req->status, req->actual, req->length); -} - static void printer_soft_reset(struct printer_dev *dev) { struct usb_request *req; @@ -1079,11 +903,12 @@ static void printer_soft_reset(struct printer_dev *dev) list_add(&req->list, &dev->tx_reqs); } - if (usb_ep_enable(dev->in_ep, dev->in)) + if (usb_ep_enable(dev->in_ep)) DBG(dev, "Failed to enable USB in_ep\n"); - if (usb_ep_enable(dev->out_ep, dev->out)) + if (usb_ep_enable(dev->out_ep)) DBG(dev, "Failed to enable USB out_ep\n"); + wake_up_interruptible(&dev->rx_wait); wake_up_interruptible(&dev->tx_wait); wake_up_interruptible(&dev->tx_flush_wait); } @@ -1094,11 +919,12 @@ static void printer_soft_reset(struct printer_dev *dev) * The setup() callback implements all the ep0 functionality that's not * handled lower down. */ -static int -printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) +static int printer_func_setup(struct usb_function *f, + const struct usb_ctrlrequest *ctrl) { - struct printer_dev *dev = get_gadget_data(gadget); - struct usb_request *req = dev->req; + struct printer_dev *dev = container_of(f, struct printer_dev, function); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; int value = -EOPNOTSUPP; u16 wIndex = le16_to_cpu(ctrl->wIndex); u16 wValue = le16_to_cpu(ctrl->wValue); @@ -1107,97 +933,12 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) DBG(dev, "ctrl req%02x.%02x v%04x i%04x l%d\n", ctrl->bRequestType, ctrl->bRequest, wValue, wIndex, wLength); - req->complete = printer_setup_complete; - switch (ctrl->bRequestType&USB_TYPE_MASK) { - - case USB_TYPE_STANDARD: - switch (ctrl->bRequest) { - - case USB_REQ_GET_DESCRIPTOR: - if (ctrl->bRequestType != USB_DIR_IN) - break; - switch (wValue >> 8) { - - case USB_DT_DEVICE: - value = min(wLength, (u16) sizeof device_desc); - memcpy(req->buf, &device_desc, value); - break; -#ifdef CONFIG_USB_GADGET_DUALSPEED - case USB_DT_DEVICE_QUALIFIER: - if (!gadget->is_dualspeed) - break; - value = min(wLength, - (u16) sizeof dev_qualifier); - memcpy(req->buf, &dev_qualifier, value); - break; - - case USB_DT_OTHER_SPEED_CONFIG: - if (!gadget->is_dualspeed) - break; - /* FALLTHROUGH */ -#endif /* CONFIG_USB_GADGET_DUALSPEED */ - case USB_DT_CONFIG: - value = config_buf(gadget->speed, req->buf, - wValue >> 8, - wValue & 0xff, - gadget->is_otg); - if (value >= 0) - value = min(wLength, (u16) value); - break; - - case USB_DT_STRING: - value = usb_gadget_get_string(&stringtab, - wValue & 0xff, req->buf); - if (value >= 0) - value = min(wLength, (u16) value); - break; - } - break; - - case USB_REQ_SET_CONFIGURATION: - if (ctrl->bRequestType != 0) - break; - if (gadget->a_hnp_support) - DBG(dev, "HNP available\n"); - else if (gadget->a_alt_hnp_support) - DBG(dev, "HNP needs a different root port\n"); - value = printer_set_config(dev, wValue); - break; - case USB_REQ_GET_CONFIGURATION: - if (ctrl->bRequestType != USB_DIR_IN) - break; - *(u8 *)req->buf = dev->config; - value = min(wLength, (u16) 1); - break; - - case USB_REQ_SET_INTERFACE: - if (ctrl->bRequestType != USB_RECIP_INTERFACE || - !dev->config) - break; - - value = set_interface(dev, PRINTER_INTERFACE); - break; - case USB_REQ_GET_INTERFACE: - if (ctrl->bRequestType != - (USB_DIR_IN|USB_RECIP_INTERFACE) - || !dev->config) - break; - - *(u8 *)req->buf = dev->interface; - value = min(wLength, (u16) 1); - break; - - default: - goto unknown; - } - break; - case USB_TYPE_CLASS: switch (ctrl->bRequest) { case 0: /* Get the IEEE-1284 PNP String */ /* Only one printer interface is supported. */ - if ((wIndex>>8) != PRINTER_INTERFACE) + if ((wIndex>>8) != dev->interface) break; value = (pnp_string[0]<<8)|pnp_string[1]; @@ -1208,7 +949,7 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case 1: /* Get Port Status */ /* Only one printer interface is supported. */ - if (wIndex != PRINTER_INTERFACE) + if (wIndex != dev->interface) break; *(u8 *)req->buf = dev->printer_status; @@ -1217,7 +958,7 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl) case 2: /* Soft Reset */ /* Only one printer interface is supported. */ - if (wIndex != PRINTER_INTERFACE) + if (wIndex != dev->interface) break; printer_soft_reset(dev); @@ -1238,47 +979,92 @@ unknown: wValue, wIndex, wLength); break; } + /* host either stalls (value < 0) or reports success */ + return value; +} - /* respond with data transfer before status phase? */ - if (value >= 0) { - req->length = value; - req->zero = value < wLength - && (value % gadget->ep0->maxpacket) == 0; - value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC); - if (value < 0) { - DBG(dev, "ep_queue --> %d\n", value); - req->status = 0; - printer_setup_complete(gadget->ep0, req); - } +static int __init printer_func_bind(struct usb_configuration *c, + struct usb_function *f) +{ + struct printer_dev *dev = container_of(f, struct printer_dev, function); + struct usb_composite_dev *cdev = c->cdev; + struct usb_ep *in_ep; + struct usb_ep *out_ep = NULL; + int id; + int ret; + + id = usb_interface_id(c, f); + if (id < 0) + return id; + intf_desc.bInterfaceNumber = id; + + /* all we really need is bulk IN/OUT */ + in_ep = usb_ep_autoconfig(cdev->gadget, &fs_ep_in_desc); + if (!in_ep) { +autoconf_fail: + dev_err(&cdev->gadget->dev, "can't autoconfigure on %s\n", + cdev->gadget->name); + return -ENODEV; } + in_ep->driver_data = in_ep; /* claim */ - /* host either stalls (value < 0) or reports success */ - return value; + out_ep = usb_ep_autoconfig(cdev->gadget, &fs_ep_out_desc); + if (!out_ep) + goto autoconf_fail; + out_ep->driver_data = out_ep; /* claim */ + + /* assumes that all endpoints are dual-speed */ + hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress; + hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress; + + ret = usb_assign_descriptors(f, fs_printer_function, + hs_printer_function, NULL); + if (ret) + return ret; + + dev->in_ep = in_ep; + dev->out_ep = out_ep; + return 0; } -static void -printer_disconnect(struct usb_gadget *gadget) +static void printer_func_unbind(struct usb_configuration *c, + struct usb_function *f) +{ + usb_free_all_descriptors(f); +} + +static int printer_func_set_alt(struct usb_function *f, + unsigned intf, unsigned alt) { - struct printer_dev *dev = get_gadget_data(gadget); + struct printer_dev *dev = container_of(f, struct printer_dev, function); + int ret = -ENOTSUPP; + + if (!alt) + ret = set_interface(dev, intf); + + return ret; +} + +static void printer_func_disable(struct usb_function *f) +{ + struct printer_dev *dev = container_of(f, struct printer_dev, function); unsigned long flags; - DBG(dev, "%s\n", __FUNCTION__); + DBG(dev, "%s\n", __func__); spin_lock_irqsave(&dev->lock, flags); - printer_reset_interface(dev); - spin_unlock_irqrestore(&dev->lock, flags); } -static void -printer_unbind(struct usb_gadget *gadget) +static void printer_cfg_unbind(struct usb_configuration *c) { - struct printer_dev *dev = get_gadget_data(gadget); + struct printer_dev *dev; struct usb_request *req; + dev = &usb_printer_gadget; - DBG(dev, "%s\n", __FUNCTION__); + DBG(dev, "%s\n", __func__); /* Remove sysfs files */ device_destroy(usb_gadget_class, g_printer_devno); @@ -1314,34 +1100,45 @@ printer_unbind(struct usb_gadget *gadget) list_del(&req->list); printer_req_free(dev->out_ep, req); } - - if (dev->req) { - printer_req_free(gadget->ep0, dev->req); - dev->req = NULL; - } - - set_gadget_data(gadget, NULL); } -static int __init -printer_bind(struct usb_gadget *gadget) +static struct usb_configuration printer_cfg_driver = { + .label = "printer", + .unbind = printer_cfg_unbind, + .bConfigurationValue = 1, + .bmAttributes = USB_CONFIG_ATT_ONE | USB_CONFIG_ATT_SELFPOWER, +}; + +static int __init printer_bind_config(struct usb_configuration *c) { + struct usb_gadget *gadget = c->cdev->gadget; struct printer_dev *dev; - struct usb_ep *in_ep, *out_ep; int status = -ENOMEM; - int gcnum; size_t len; u32 i; struct usb_request *req; + usb_ep_autoconfig_reset(gadget); + dev = &usb_printer_gadget; + dev->function.name = shortname; + dev->function.bind = printer_func_bind; + dev->function.setup = printer_func_setup; + dev->function.unbind = printer_func_unbind; + dev->function.set_alt = printer_func_set_alt; + dev->function.disable = printer_func_disable; + + status = usb_add_function(c, &dev->function); + if (status) + return status; /* Setup the sysfs files for the printer gadget. */ dev->pdev = device_create(usb_gadget_class, NULL, g_printer_devno, - "g_printer"); + NULL, "g_printer"); if (IS_ERR(dev->pdev)) { ERROR(dev, "Failed to create device: g_printer\n"); + status = PTR_ERR(dev->pdev); goto fail; } @@ -1357,52 +1154,6 @@ printer_bind(struct usb_gadget *gadget) goto fail; } - if (gadget_is_sa1100(gadget)) { - /* hardware can't write zero length packets. */ - ERROR(dev, "SA1100 controller is unsupport by this driver\n"); - goto fail; - } - - gcnum = usb_gadget_controller_number(gadget); - if (gcnum >= 0) { - device_desc.bcdDevice = cpu_to_le16(0x0200 + gcnum); - } else { - dev_warn(&gadget->dev, "controller '%s' not recognized\n", - gadget->name); - /* unrecognized, but safe unless bulk is REALLY quirky */ - device_desc.bcdDevice = - __constant_cpu_to_le16(0xFFFF); - } - snprintf(manufacturer, sizeof(manufacturer), "%s %s with %s", - init_utsname()->sysname, init_utsname()->release, - gadget->name); - - device_desc.idVendor = - __constant_cpu_to_le16(PRINTER_VENDOR_NUM); - device_desc.idProduct = - __constant_cpu_to_le16(PRINTER_PRODUCT_NUM); - - /* support optional vendor/distro customization */ - if (idVendor) { - if (!idProduct) { - dev_err(&gadget->dev, "idVendor needs idProduct!\n"); - return -ENODEV; - } - device_desc.idVendor = cpu_to_le16(idVendor); - device_desc.idProduct = cpu_to_le16(idProduct); - if (bcdDevice) - device_desc.bcdDevice = cpu_to_le16(bcdDevice); - } - - if (iManufacturer) - strlcpy(manufacturer, iManufacturer, sizeof manufacturer); - - if (iProduct) - strlcpy(product_desc, iProduct, sizeof product_desc); - - if (iSerialNum) - strlcpy(serial_num, iSerialNum, sizeof serial_num); - if (iPNPstring) strlcpy(&pnp_string[2], iPNPstring, (sizeof pnp_string)-2); @@ -1410,42 +1161,16 @@ printer_bind(struct usb_gadget *gadget) pnp_string[0] = (len >> 8) & 0xFF; pnp_string[1] = len & 0xFF; - /* all we really need is bulk IN/OUT */ - usb_ep_autoconfig_reset(gadget); - in_ep = usb_ep_autoconfig(gadget, &fs_ep_in_desc); - if (!in_ep) { -autoconf_fail: - dev_err(&gadget->dev, "can't autoconfigure on %s\n", - gadget->name); - return -ENODEV; - } - in_ep->driver_data = in_ep; /* claim */ - - out_ep = usb_ep_autoconfig(gadget, &fs_ep_out_desc); - if (!out_ep) - goto autoconf_fail; - out_ep->driver_data = out_ep; /* claim */ - -#ifdef CONFIG_USB_GADGET_DUALSPEED - /* assumes ep0 uses the same value for both speeds ... */ - dev_qualifier.bMaxPacketSize0 = device_desc.bMaxPacketSize0; - - /* and that all endpoints are dual-speed */ - hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress; - hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress; -#endif /* DUALSPEED */ - - device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket; usb_gadget_set_selfpowered(gadget); - if (gadget->is_otg) { - otg_desc.bmAttributes |= USB_OTG_HNP, - config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP; - config_desc.bMaxPower = 4; + if (gadget_is_otg(gadget)) { + otg_descriptor.bmAttributes |= USB_OTG_HNP; + printer_cfg_driver.descriptors = otg_desc; + printer_cfg_driver.bmAttributes |= USB_CONFIG_ATT_WAKEUP; } spin_lock_init(&dev->lock); - spin_lock_init(&dev->lock_printer_io); + mutex_init(&dev->lock_printer_io); INIT_LIST_HEAD(&dev->tx_reqs); INIT_LIST_HEAD(&dev->tx_reqs_active); INIT_LIST_HEAD(&dev->rx_reqs); @@ -1455,7 +1180,6 @@ autoconf_fail: init_waitqueue_head(&dev->tx_wait); init_waitqueue_head(&dev->tx_flush_wait); - dev->config = 0; dev->interface = -1; dev->printer_cdev_open = 0; dev->printer_status = PRINTER_NOT_ERROR; @@ -1463,17 +1187,6 @@ autoconf_fail: dev->current_rx_bytes = 0; dev->current_rx_buf = NULL; - dev->in_ep = in_ep; - dev->out_ep = out_ep; - - /* preallocate control message data and buffer */ - dev->req = printer_req_alloc(gadget->ep0, USB_DESC_BUFSIZE, - GFP_KERNEL); - if (!dev->req) { - status = -ENOMEM; - goto fail; - } - for (i = 0; i < QLEN; i++) { req = printer_req_alloc(dev->in_ep, USB_BUFSIZE, GFP_KERNEL); if (!req) { @@ -1502,46 +1215,49 @@ autoconf_fail: list_add(&req->list, &dev->rx_reqs); } - dev->req->complete = printer_setup_complete; - /* finish hookup to lower layer ... */ dev->gadget = gadget; - set_gadget_data(gadget, dev); - gadget->ep0->driver_data = dev; INFO(dev, "%s, version: " DRIVER_VERSION "\n", driver_desc); - INFO(dev, "using %s, OUT %s IN %s\n", gadget->name, out_ep->name, - in_ep->name); - return 0; fail: - printer_unbind(gadget); + printer_cfg_unbind(c); return status; } -/*-------------------------------------------------------------------------*/ +static int printer_unbind(struct usb_composite_dev *cdev) +{ + return 0; +} -static struct usb_gadget_driver printer_driver = { - .speed = DEVSPEED, +static int __init printer_bind(struct usb_composite_dev *cdev) +{ + int ret; + + ret = usb_string_ids_tab(cdev, strings); + if (ret < 0) + return ret; + device_desc.iManufacturer = strings[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings[USB_GADGET_PRODUCT_IDX].id; + device_desc.iSerialNumber = strings[USB_GADGET_SERIAL_IDX].id; + + ret = usb_add_config(cdev, &printer_cfg_driver, printer_bind_config); + if (ret) + return ret; + usb_composite_overwrite_options(cdev, &coverwrite); + return ret; +} - .function = (char *) driver_desc, +static __refdata struct usb_composite_driver printer_driver = { + .name = shortname, + .dev = &device_desc, + .strings = dev_strings, + .max_speed = USB_SPEED_HIGH, .bind = printer_bind, .unbind = printer_unbind, - - .setup = printer_setup, - .disconnect = printer_disconnect, - - .driver = { - .name = (char *) shortname, - .owner = THIS_MODULE, - }, }; -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_AUTHOR("Craig Nadler"); -MODULE_LICENSE("GPL"); - static int __init init(void) { @@ -1550,23 +1266,23 @@ init(void) usb_gadget_class = class_create(THIS_MODULE, "usb_printer_gadget"); if (IS_ERR(usb_gadget_class)) { status = PTR_ERR(usb_gadget_class); - ERROR(dev, "unable to create usb_gadget class %d\n", status); + pr_err("unable to create usb_gadget class %d\n", status); return status; } status = alloc_chrdev_region(&g_printer_devno, 0, 1, "USB printer gadget"); if (status) { - ERROR(dev, "alloc_chrdev_region %d\n", status); + pr_err("alloc_chrdev_region %d\n", status); class_destroy(usb_gadget_class); return status; } - status = usb_gadget_register_driver(&printer_driver); + status = usb_composite_probe(&printer_driver); if (status) { class_destroy(usb_gadget_class); unregister_chrdev_region(g_printer_devno, 1); - DBG(dev, "usb_gadget_register_driver %x\n", status); + pr_err("usb_gadget_probe_driver %x\n", status); } return status; @@ -1576,16 +1292,14 @@ module_init(init); static void __exit cleanup(void) { - int status; - - spin_lock(&usb_printer_gadget.lock_printer_io); + mutex_lock(&usb_printer_gadget.lock_printer_io); + usb_composite_unregister(&printer_driver); + unregister_chrdev_region(g_printer_devno, 1); class_destroy(usb_gadget_class); - unregister_chrdev_region(g_printer_devno, 2); - - status = usb_gadget_unregister_driver(&printer_driver); - if (status) - ERROR(dev, "usb_gadget_unregister_driver %x\n", status); - - spin_unlock(&usb_printer_gadget.lock_printer_io); + mutex_unlock(&usb_printer_gadget.lock_printer_io); } module_exit(cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Craig Nadler"); +MODULE_LICENSE("GPL"); |