forked from Minki/linux
USB: gadget: serial gadget cleanups
Clean up the serial gadget, using newer APIs and conventions: - gadget_is_dualspeed() and gadget_is_otg() ... #ifdef removal - Remove many now-needless #includes - Use the DEBUG and VERBOSE_DEBUG conventions; turned up a bug in the original debug messaging - Various whitespace fixes. This gave only a minor object code shrinkage, but the source looks much cleaner in various places. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Al Borchers <alborchers@steinerpoint.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell
Greg Kroah-Hartman
parent
8c07021635
commit
51a0e85cd9
@ -17,30 +17,11 @@
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/slab.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/wait.h>
|
||||
#include <linux/proc_fs.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/tty.h>
|
||||
#include <linux/tty_flip.h>
|
||||
#include <linux/mutex.h>
|
||||
|
||||
#include <asm/byteorder.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/irq.h>
|
||||
#include <asm/system.h>
|
||||
#include <asm/unaligned.h>
|
||||
#include <asm/uaccess.h>
|
||||
|
||||
#include <linux/usb/ch9.h>
|
||||
#include <linux/usb/cdc.h>
|
||||
@ -89,30 +70,29 @@
|
||||
#define GS_DEFAULT_PARITY USB_CDC_NO_PARITY
|
||||
#define GS_DEFAULT_CHAR_FORMAT USB_CDC_1_STOP_BITS
|
||||
|
||||
/* select highspeed/fullspeed, hiding highspeed if not configured */
|
||||
#ifdef CONFIG_USB_GADGET_DUALSPEED
|
||||
#define GS_SPEED_SELECT(is_hs,hs,fs) ((is_hs) ? (hs) : (fs))
|
||||
#else
|
||||
#define GS_SPEED_SELECT(is_hs,hs,fs) (fs)
|
||||
#endif /* CONFIG_USB_GADGET_DUALSPEED */
|
||||
/* maxpacket and other transfer characteristics vary by speed. */
|
||||
static inline struct usb_endpoint_descriptor *
|
||||
choose_ep_desc(struct usb_gadget *g, struct usb_endpoint_descriptor *hs,
|
||||
struct usb_endpoint_descriptor *fs)
|
||||
{
|
||||
if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH)
|
||||
return hs;
|
||||
return fs;
|
||||
}
|
||||
|
||||
|
||||
/* debug settings */
|
||||
#ifdef GS_DEBUG
|
||||
#ifdef DEBUG
|
||||
static int debug = 1;
|
||||
#else
|
||||
#define debug 0
|
||||
#endif
|
||||
|
||||
#define gs_debug(format, arg...) \
|
||||
do { if (debug) printk(KERN_DEBUG format, ## arg); } while(0)
|
||||
#define gs_debug_level(level, format, arg...) \
|
||||
do { if (debug>=level) printk(KERN_DEBUG format, ## arg); } while(0)
|
||||
|
||||
#else
|
||||
|
||||
#define gs_debug(format, arg...) \
|
||||
do { } while(0)
|
||||
#define gs_debug_level(level, format, arg...) \
|
||||
do { } while(0)
|
||||
|
||||
#endif /* GS_DEBUG */
|
||||
|
||||
/* Thanks to NetChip Technologies for donating this product ID.
|
||||
*
|
||||
@ -147,10 +127,10 @@ struct gs_req_entry {
|
||||
|
||||
/* the port structure holds info for each port, one for each minor number */
|
||||
struct gs_port {
|
||||
struct gs_dev *port_dev; /* pointer to device struct */
|
||||
struct gs_dev *port_dev; /* pointer to device struct */
|
||||
struct tty_struct *port_tty; /* pointer to tty struct */
|
||||
spinlock_t port_lock;
|
||||
int port_num;
|
||||
int port_num;
|
||||
int port_open_count;
|
||||
int port_in_use; /* open/close in progress */
|
||||
wait_queue_head_t port_write_wait;/* waiting to write */
|
||||
@ -188,7 +168,7 @@ static void __exit gs_module_exit(void);
|
||||
/* tty driver */
|
||||
static int gs_open(struct tty_struct *tty, struct file *file);
|
||||
static void gs_close(struct tty_struct *tty, struct file *file);
|
||||
static int gs_write(struct tty_struct *tty,
|
||||
static int gs_write(struct tty_struct *tty,
|
||||
const unsigned char *buf, int count);
|
||||
static void gs_put_char(struct tty_struct *tty, unsigned char ch);
|
||||
static void gs_flush_chars(struct tty_struct *tty);
|
||||
@ -222,7 +202,7 @@ static void gs_setup_complete(struct usb_ep *ep, struct usb_request *req);
|
||||
static void gs_disconnect(struct usb_gadget *gadget);
|
||||
static int gs_set_config(struct gs_dev *dev, unsigned config);
|
||||
static void gs_reset_config(struct gs_dev *dev);
|
||||
static int gs_build_config_buf(u8 *buf, enum usb_device_speed speed,
|
||||
static int gs_build_config_buf(u8 *buf, struct usb_gadget *g,
|
||||
u8 type, unsigned int index, int is_otg);
|
||||
|
||||
static struct usb_request *gs_alloc_req(struct usb_ep *ep, unsigned int len,
|
||||
@ -415,18 +395,18 @@ static const struct usb_cdc_header_desc gs_header_desc = {
|
||||
};
|
||||
|
||||
static const struct usb_cdc_call_mgmt_descriptor gs_call_mgmt_descriptor = {
|
||||
.bLength = sizeof(gs_call_mgmt_descriptor),
|
||||
.bDescriptorType = USB_DT_CS_INTERFACE,
|
||||
.bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE,
|
||||
.bmCapabilities = 0,
|
||||
.bDataInterface = 1, /* index of data interface */
|
||||
.bLength = sizeof(gs_call_mgmt_descriptor),
|
||||
.bDescriptorType = USB_DT_CS_INTERFACE,
|
||||
.bDescriptorSubType = USB_CDC_CALL_MANAGEMENT_TYPE,
|
||||
.bmCapabilities = 0,
|
||||
.bDataInterface = 1, /* index of data interface */
|
||||
};
|
||||
|
||||
static struct usb_cdc_acm_descriptor gs_acm_descriptor = {
|
||||
.bLength = sizeof(gs_acm_descriptor),
|
||||
.bDescriptorType = USB_DT_CS_INTERFACE,
|
||||
.bDescriptorSubType = USB_CDC_ACM_TYPE,
|
||||
.bmCapabilities = 0,
|
||||
.bLength = sizeof(gs_acm_descriptor),
|
||||
.bDescriptorType = USB_DT_CS_INTERFACE,
|
||||
.bDescriptorSubType = USB_CDC_ACM_TYPE,
|
||||
.bmCapabilities = 0,
|
||||
};
|
||||
|
||||
static const struct usb_cdc_union_desc gs_union_desc = {
|
||||
@ -436,7 +416,7 @@ static const struct usb_cdc_union_desc gs_union_desc = {
|
||||
.bMasterInterface0 = 0, /* index of control interface */
|
||||
.bSlaveInterface0 = 1, /* index of data interface */
|
||||
};
|
||||
|
||||
|
||||
static struct usb_endpoint_descriptor gs_fullspeed_notify_desc = {
|
||||
.bLength = USB_DT_ENDPOINT_SIZE,
|
||||
.bDescriptorType = USB_DT_ENDPOINT,
|
||||
@ -482,7 +462,6 @@ static const struct usb_descriptor_header *gs_acm_fullspeed_function[] = {
|
||||
NULL,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_USB_GADGET_DUALSPEED
|
||||
static struct usb_endpoint_descriptor gs_highspeed_notify_desc = {
|
||||
.bLength = USB_DT_ENDPOINT_SIZE,
|
||||
.bDescriptorType = USB_DT_ENDPOINT,
|
||||
@ -536,15 +515,13 @@ static const struct usb_descriptor_header *gs_acm_highspeed_function[] = {
|
||||
NULL,
|
||||
};
|
||||
|
||||
#endif /* CONFIG_USB_GADGET_DUALSPEED */
|
||||
|
||||
|
||||
/* Module */
|
||||
MODULE_DESCRIPTION(GS_LONG_NAME);
|
||||
MODULE_AUTHOR("Al Borchers");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
#ifdef GS_DEBUG
|
||||
#ifdef DEBUG
|
||||
module_param(debug, int, S_IRUGO|S_IWUSR);
|
||||
MODULE_PARM_DESC(debug, "Enable debugging, 0=off, 1=on");
|
||||
#endif
|
||||
@ -915,7 +892,8 @@ static void gs_put_char(struct tty_struct *tty, unsigned char ch)
|
||||
return;
|
||||
}
|
||||
|
||||
gs_debug("gs_put_char: (%d,%p) char=0x%x, called from %p, %p, %p\n", port->port_num, tty, ch, __builtin_return_address(0), __builtin_return_address(1), __builtin_return_address(2));
|
||||
gs_debug("gs_put_char: (%d,%p) char=0x%x, called from %p\n",
|
||||
port->port_num, tty, ch, __builtin_return_address(0));
|
||||
|
||||
spin_lock_irqsave(&port->port_lock, flags);
|
||||
|
||||
@ -1116,7 +1094,11 @@ static int gs_send(struct gs_dev *dev)
|
||||
len = gs_send_packet(dev, req->buf, ep->maxpacket);
|
||||
|
||||
if (len > 0) {
|
||||
gs_debug_level(3, "gs_send: len=%d, 0x%2.2x 0x%2.2x 0x%2.2x ...\n", len, *((unsigned char *)req->buf), *((unsigned char *)req->buf+1), *((unsigned char *)req->buf+2));
|
||||
gs_debug_level(3, "gs_send: len=%d, 0x%2.2x "
|
||||
"0x%2.2x 0x%2.2x ...\n", len,
|
||||
*((unsigned char *)req->buf),
|
||||
*((unsigned char *)req->buf+1),
|
||||
*((unsigned char *)req->buf+2));
|
||||
list_del(&req_entry->re_entry);
|
||||
req->length = len;
|
||||
spin_unlock_irqrestore(&dev->dev_lock, flags);
|
||||
@ -1269,7 +1251,7 @@ static void gs_read_complete(struct usb_ep *ep, struct usb_request *req)
|
||||
|
||||
switch(req->status) {
|
||||
case 0:
|
||||
/* normal completion */
|
||||
/* normal completion */
|
||||
gs_recv_packet(dev, req->buf, req->actual);
|
||||
requeue:
|
||||
req->length = ep->maxpacket;
|
||||
@ -1406,23 +1388,24 @@ static int __init gs_bind(struct usb_gadget *gadget)
|
||||
? USB_CLASS_COMM : USB_CLASS_VENDOR_SPEC;
|
||||
gs_device_desc.bMaxPacketSize0 = gadget->ep0->maxpacket;
|
||||
|
||||
#ifdef CONFIG_USB_GADGET_DUALSPEED
|
||||
gs_qualifier_desc.bDeviceClass = use_acm
|
||||
? USB_CLASS_COMM : USB_CLASS_VENDOR_SPEC;
|
||||
/* assume ep0 uses the same packet size for both speeds */
|
||||
gs_qualifier_desc.bMaxPacketSize0 = gs_device_desc.bMaxPacketSize0;
|
||||
/* assume endpoints are dual-speed */
|
||||
gs_highspeed_notify_desc.bEndpointAddress =
|
||||
gs_fullspeed_notify_desc.bEndpointAddress;
|
||||
gs_highspeed_in_desc.bEndpointAddress =
|
||||
gs_fullspeed_in_desc.bEndpointAddress;
|
||||
gs_highspeed_out_desc.bEndpointAddress =
|
||||
gs_fullspeed_out_desc.bEndpointAddress;
|
||||
#endif /* CONFIG_USB_GADGET_DUALSPEED */
|
||||
if (gadget_is_dualspeed(gadget)) {
|
||||
gs_qualifier_desc.bDeviceClass = use_acm
|
||||
? USB_CLASS_COMM : USB_CLASS_VENDOR_SPEC;
|
||||
/* assume ep0 uses the same packet size for both speeds */
|
||||
gs_qualifier_desc.bMaxPacketSize0 =
|
||||
gs_device_desc.bMaxPacketSize0;
|
||||
/* assume endpoints are dual-speed */
|
||||
gs_highspeed_notify_desc.bEndpointAddress =
|
||||
gs_fullspeed_notify_desc.bEndpointAddress;
|
||||
gs_highspeed_in_desc.bEndpointAddress =
|
||||
gs_fullspeed_in_desc.bEndpointAddress;
|
||||
gs_highspeed_out_desc.bEndpointAddress =
|
||||
gs_fullspeed_out_desc.bEndpointAddress;
|
||||
}
|
||||
|
||||
usb_gadget_set_selfpowered(gadget);
|
||||
|
||||
if (gadget->is_otg) {
|
||||
if (gadget_is_otg(gadget)) {
|
||||
gs_otg_descriptor.bmAttributes |= USB_OTG_HNP,
|
||||
gs_bulk_config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
|
||||
gs_acm_config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
|
||||
@ -1570,9 +1553,8 @@ static int gs_setup_standard(struct usb_gadget *gadget,
|
||||
memcpy(req->buf, &gs_device_desc, ret);
|
||||
break;
|
||||
|
||||
#ifdef CONFIG_USB_GADGET_DUALSPEED
|
||||
case USB_DT_DEVICE_QUALIFIER:
|
||||
if (!gadget->is_dualspeed)
|
||||
if (!gadget_is_dualspeed(gadget))
|
||||
break;
|
||||
ret = min(wLength,
|
||||
(u16)sizeof(struct usb_qualifier_descriptor));
|
||||
@ -1580,14 +1562,13 @@ static int gs_setup_standard(struct usb_gadget *gadget,
|
||||
break;
|
||||
|
||||
case USB_DT_OTHER_SPEED_CONFIG:
|
||||
if (!gadget->is_dualspeed)
|
||||
if (!gadget_is_dualspeed(gadget))
|
||||
break;
|
||||
/* fall through */
|
||||
#endif /* CONFIG_USB_GADGET_DUALSPEED */
|
||||
case USB_DT_CONFIG:
|
||||
ret = gs_build_config_buf(req->buf, gadget->speed,
|
||||
ret = gs_build_config_buf(req->buf, gadget,
|
||||
wValue >> 8, wValue & 0xff,
|
||||
gadget->is_otg);
|
||||
gadget_is_otg(gadget));
|
||||
if (ret >= 0)
|
||||
ret = min(wLength, (u16)ret);
|
||||
break;
|
||||
@ -1827,8 +1808,7 @@ static int gs_set_config(struct gs_dev *dev, unsigned config)
|
||||
|
||||
if (EP_NOTIFY_NAME
|
||||
&& strcmp(ep->name, EP_NOTIFY_NAME) == 0) {
|
||||
ep_desc = GS_SPEED_SELECT(
|
||||
gadget->speed == USB_SPEED_HIGH,
|
||||
ep_desc = choose_ep_desc(gadget,
|
||||
&gs_highspeed_notify_desc,
|
||||
&gs_fullspeed_notify_desc);
|
||||
ret = usb_ep_enable(ep,ep_desc);
|
||||
@ -1844,9 +1824,8 @@ static int gs_set_config(struct gs_dev *dev, unsigned config)
|
||||
}
|
||||
|
||||
else if (strcmp(ep->name, EP_IN_NAME) == 0) {
|
||||
ep_desc = GS_SPEED_SELECT(
|
||||
gadget->speed == USB_SPEED_HIGH,
|
||||
&gs_highspeed_in_desc,
|
||||
ep_desc = choose_ep_desc(gadget,
|
||||
&gs_highspeed_in_desc,
|
||||
&gs_fullspeed_in_desc);
|
||||
ret = usb_ep_enable(ep,ep_desc);
|
||||
if (ret == 0) {
|
||||
@ -1861,8 +1840,7 @@ static int gs_set_config(struct gs_dev *dev, unsigned config)
|
||||
}
|
||||
|
||||
else if (strcmp(ep->name, EP_OUT_NAME) == 0) {
|
||||
ep_desc = GS_SPEED_SELECT(
|
||||
gadget->speed == USB_SPEED_HIGH,
|
||||
ep_desc = choose_ep_desc(gadget,
|
||||
&gs_highspeed_out_desc,
|
||||
&gs_fullspeed_out_desc);
|
||||
ret = usb_ep_enable(ep,ep_desc);
|
||||
@ -1981,11 +1959,11 @@ static void gs_reset_config(struct gs_dev *dev)
|
||||
* Builds the config descriptors in the given buffer and returns the
|
||||
* length, or a negative error number.
|
||||
*/
|
||||
static int gs_build_config_buf(u8 *buf, enum usb_device_speed speed,
|
||||
static int gs_build_config_buf(u8 *buf, struct usb_gadget *g,
|
||||
u8 type, unsigned int index, int is_otg)
|
||||
{
|
||||
int len;
|
||||
int high_speed;
|
||||
int high_speed = 0;
|
||||
const struct usb_config_descriptor *config_desc;
|
||||
const struct usb_descriptor_header **function;
|
||||
|
||||
@ -1993,20 +1971,22 @@ static int gs_build_config_buf(u8 *buf, enum usb_device_speed speed,
|
||||
return -EINVAL;
|
||||
|
||||
/* other speed switches high and full speed */
|
||||
high_speed = (speed == USB_SPEED_HIGH);
|
||||
if (type == USB_DT_OTHER_SPEED_CONFIG)
|
||||
high_speed = !high_speed;
|
||||
if (gadget_is_dualspeed(g)) {
|
||||
high_speed = (g->speed == USB_SPEED_HIGH);
|
||||
if (type == USB_DT_OTHER_SPEED_CONFIG)
|
||||
high_speed = !high_speed;
|
||||
}
|
||||
|
||||
if (use_acm) {
|
||||
config_desc = &gs_acm_config_desc;
|
||||
function = GS_SPEED_SELECT(high_speed,
|
||||
gs_acm_highspeed_function,
|
||||
gs_acm_fullspeed_function);
|
||||
function = high_speed
|
||||
? gs_acm_highspeed_function
|
||||
: gs_acm_fullspeed_function;
|
||||
} else {
|
||||
config_desc = &gs_bulk_config_desc;
|
||||
function = GS_SPEED_SELECT(high_speed,
|
||||
gs_bulk_highspeed_function,
|
||||
gs_bulk_fullspeed_function);
|
||||
function = high_speed
|
||||
? gs_bulk_highspeed_function
|
||||
: gs_bulk_fullspeed_function;
|
||||
}
|
||||
|
||||
/* for now, don't advertise srp-only devices */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user