aboutsummaryrefslogtreecommitdiff
path: root/drivers/isdn/gigaset/usb-gigaset.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/isdn/gigaset/usb-gigaset.c')
-rw-r--r--drivers/isdn/gigaset/usb-gigaset.c190
1 files changed, 78 insertions, 112 deletions
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
index fba61f67052..d0a41cb0cf6 100644
--- a/drivers/isdn/gigaset/usb-gigaset.c
+++ b/drivers/isdn/gigaset/usb-gigaset.c
@@ -16,10 +16,6 @@
*/
#include "gigaset.h"
-
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
@@ -43,14 +39,15 @@ MODULE_PARM_DESC(cidmode, "Call-ID mode");
#define GIGASET_MODULENAME "usb_gigaset"
#define GIGASET_DEVNAME "ttyGU"
-#define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256
+/* length limit according to Siemens 3070usb-protokoll.doc ch. 2.1 */
+#define IF_WRITEBUF 264
/* Values for the Gigaset M105 Data */
#define USB_M105_VENDOR_ID 0x0681
#define USB_M105_PRODUCT_ID 0x0009
/* table of devices that work with this driver */
-static const struct usb_device_id gigaset_table [] = {
+static const struct usb_device_id gigaset_table[] = {
{ USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) },
{ } /* Terminating entry */
};
@@ -97,8 +94,8 @@ MODULE_DEVICE_TABLE(usb, gigaset_table);
* 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13
* Used after every "configuration sequence" (RQ 12, RQs 01/03/13).
* xx is usually 0x00 but was 0x7e before starting data transfer
- * in unimodem mode. So, this might be an array of characters that need
- * special treatment ("commit all bufferd data"?), 11=^Q, 13=^S.
+ * in unimodem mode. So, this might be an array of characters that
+ * need special treatment ("commit all bufferd data"?), 11=^Q, 13=^S.
*
* Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two
* flags per packet.
@@ -114,7 +111,7 @@ static int gigaset_suspend(struct usb_interface *intf, pm_message_t message);
static int gigaset_resume(struct usb_interface *intf);
static int gigaset_pre_reset(struct usb_interface *intf);
-static struct gigaset_driver *driver = NULL;
+static struct gigaset_driver *driver;
/* usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver gigaset_usb_driver = {
@@ -127,6 +124,7 @@ static struct usb_driver gigaset_usb_driver = {
.reset_resume = gigaset_resume,
.pre_reset = gigaset_pre_reset,
.post_reset = gigaset_resume,
+ .disable_hub_initiated_lpm = 1,
};
struct usb_cardstate {
@@ -141,6 +139,7 @@ struct usb_cardstate {
struct urb *bulk_out_urb;
/* Input buffer */
+ unsigned char *rcvbuf;
int rcvbuf_size;
struct urb *read_urb;
__u8 int_in_endpointAddr;
@@ -153,8 +152,6 @@ static inline unsigned tiocm_to_gigaset(unsigned state)
return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0);
}
-#ifdef CONFIG_GIGASET_UNDOCREQ
-/* WARNING: EXPERIMENTAL! */
static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
unsigned new_state)
{
@@ -166,16 +163,19 @@ static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
val = tiocm_to_gigaset(new_state);
gig_dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask);
- // don't use this in an interrupt/BH
r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 7, 0x41,
(val & 0xff) | ((mask & 0xff) << 8), 0,
NULL, 0, 2000 /* timeout? */);
if (r < 0)
return r;
- //..
return 0;
}
+/*
+ * Set M105 configuration value
+ * using undocumented device commands reverse engineered from USB traces
+ * of the Siemens Windows driver
+ */
static int set_value(struct cardstate *cs, u8 req, u16 val)
{
struct usb_device *udev = cs->hw.usb->udev;
@@ -185,7 +185,7 @@ static int set_value(struct cardstate *cs, u8 req, u16 val)
(unsigned)req, (unsigned)val);
r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x12, 0x41,
0xf /*?*/, 0, NULL, 0, 2000 /*?*/);
- /* no idea what this does */
+ /* no idea what this does */
if (r < 0) {
dev_err(&udev->dev, "error %d on request 0x12\n", -r);
return r;
@@ -205,8 +205,10 @@ static int set_value(struct cardstate *cs, u8 req, u16 val)
return r < 0 ? r : (r2 < 0 ? r2 : 0);
}
-/* WARNING: HIGHLY EXPERIMENTAL! */
-// don't use this in an interrupt/BH
+/*
+ * set the baud rate on the internal serial adapter
+ * using the undocumented parameter setting command
+ */
static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
{
u16 val;
@@ -215,7 +217,6 @@ static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
cflag &= CBAUD;
switch (cflag) {
- //FIXME more values?
case B300: rate = 300; break;
case B600: rate = 600; break;
case B1200: rate = 1200; break;
@@ -237,8 +238,10 @@ static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
return set_value(cs, 1, val);
}
-/* WARNING: HIGHLY EXPERIMENTAL! */
-// don't use this in an interrupt/BH
+/*
+ * set the line format on the internal serial adapter
+ * using the undocumented parameter setting command
+ */
static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
{
u16 val = 0;
@@ -266,7 +269,7 @@ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
/* set the number of stop bits */
if (cflag & CSTOPB) {
if ((cflag & CSIZE) == CS5)
- val |= 1; /* 1.5 stop bits */ //FIXME is this okay?
+ val |= 1; /* 1.5 stop bits */
else
val |= 2; /* 2 stop bits */
}
@@ -274,26 +277,8 @@ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
return set_value(cs, 3, val);
}
-#else
-static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,
- unsigned new_state)
-{
- return -EINVAL;
-}
-
-static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
-{
- return -EINVAL;
-}
-
-static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)
-{
- return -EINVAL;
-}
-#endif
-
- /*================================================================================================================*/
+/*============================================================================*/
static int gigaset_init_bchannel(struct bc_state *bcs)
{
/* nothing to do for M10x */
@@ -355,22 +340,19 @@ static void gigaset_modem_fill(unsigned long data)
if (write_modem(cs) < 0) {
gig_dbg(DEBUG_OUTPUT,
"modem_fill: write_modem failed");
- // FIXME should we tell the LL?
again = 1; /* no callback will be called! */
}
}
} while (again);
}
-/**
- * gigaset_read_int_callback
- *
- * It is called if the data was received from the device.
+/*
+ * Interrupt Input URB completion routine
*/
static void gigaset_read_int_callback(struct urb *urb)
{
- struct inbuf_t *inbuf = urb->context;
- struct cardstate *cs = inbuf->cs;
+ struct cardstate *cs = urb->context;
+ struct inbuf_t *inbuf = cs->inbuf;
int status = urb->status;
int r;
unsigned numbytes;
@@ -381,10 +363,10 @@ static void gigaset_read_int_callback(struct urb *urb)
numbytes = urb->actual_length;
if (numbytes) {
- src = inbuf->rcvbuf;
+ src = cs->hw.usb->rcvbuf;
if (unlikely(*src))
dev_warn(cs->dev,
- "%s: There was no leading 0, but 0x%02x!\n",
+ "%s: There was no leading 0, but 0x%02x!\n",
__func__, (unsigned) *src);
++src; /* skip leading 0x00 */
--numbytes;
@@ -453,7 +435,7 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
struct cmdbuf_t *tcb;
unsigned long flags;
int count;
- int status = -ENOENT; // FIXME
+ int status = -ENOENT;
struct usb_cardstate *ucs = cs->hw.usb;
do {
@@ -484,7 +466,7 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev,
usb_sndbulkpipe(ucs->udev,
- ucs->bulk_out_endpointAddr & 0x0f),
+ ucs->bulk_out_endpointAddr & 0x0f),
cb->buf + cb->offset, count,
gigaset_write_bulk_callback, cs);
@@ -493,7 +475,9 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
ucs->busy = 1;
spin_lock_irqsave(&cs->lock, flags);
- status = cs->connected ? usb_submit_urb(ucs->bulk_out_urb, GFP_ATOMIC) : -ENODEV;
+ status = cs->connected ?
+ usb_submit_urb(ucs->bulk_out_urb, GFP_ATOMIC) :
+ -ENODEV;
spin_unlock_irqrestore(&cs->lock, flags);
if (status) {
@@ -511,29 +495,13 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb)
}
/* Send command to device. */
-static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf,
- int len, struct tasklet_struct *wake_tasklet)
+static int gigaset_write_cmd(struct cardstate *cs, struct cmdbuf_t *cb)
{
- struct cmdbuf_t *cb;
unsigned long flags;
gigaset_dbg_buffer(cs->mstate != MS_LOCKED ?
- DEBUG_TRANSCMD : DEBUG_LOCKCMD,
- "CMD Transmit", len, buf);
-
- if (len <= 0)
- return 0;
-
- if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) {
- dev_err(cs->dev, "%s: out of memory\n", __func__);
- return -ENOMEM;
- }
-
- memcpy(cb->buf, buf, len);
- cb->len = len;
- cb->offset = 0;
- cb->next = NULL;
- cb->wake_tasklet = wake_tasklet;
+ DEBUG_TRANSCMD : DEBUG_LOCKCMD,
+ "CMD Transmit", cb->len, cb->buf);
spin_lock_irqsave(&cs->cmdlock, flags);
cb->prev = cs->lastcmdbuf;
@@ -541,9 +509,9 @@ static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf,
cs->lastcmdbuf->next = cb;
else {
cs->cmdbuf = cb;
- cs->curlen = len;
+ cs->curlen = cb->len;
}
- cs->cmdbytes += len;
+ cs->cmdbytes += cb->len;
cs->lastcmdbuf = cb;
spin_unlock_irqrestore(&cs->cmdlock, flags);
@@ -551,7 +519,7 @@ static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf,
if (cs->connected)
tasklet_schedule(&cs->write_tasklet);
spin_unlock_irqrestore(&cs->lock, flags);
- return len;
+ return cb->len;
}
static int gigaset_write_room(struct cardstate *cs)
@@ -567,24 +535,24 @@ static int gigaset_chars_in_buffer(struct cardstate *cs)
return cs->cmdbytes;
}
+/*
+ * set the break characters on the internal serial adapter
+ * using undocumented device commands reverse engineered from USB traces
+ * of the Siemens Windows driver
+ */
static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6])
{
-#ifdef CONFIG_GIGASET_UNDOCREQ
struct usb_device *udev = cs->hw.usb->udev;
gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf);
memcpy(cs->hw.usb->bchars, buf, 6);
return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41,
0, 0, &buf, 6, 2000);
-#else
- return -EINVAL;
-#endif
}
-static int gigaset_freebcshw(struct bc_state *bcs)
+static void gigaset_freebcshw(struct bc_state *bcs)
{
/* unused */
- return 1;
}
/* Initialize the b-channel structure */
@@ -592,7 +560,7 @@ static int gigaset_initbcshw(struct bc_state *bcs)
{
/* unused */
bcs->hw.usb = NULL;
- return 1;
+ return 0;
}
static void gigaset_reinitbcshw(struct bc_state *bcs)
@@ -614,7 +582,7 @@ static int gigaset_initcshw(struct cardstate *cs)
kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL);
if (!ucs) {
pr_err("out of memory\n");
- return 0;
+ return -ENOMEM;
}
ucs->bchars[0] = 0;
@@ -625,12 +593,11 @@ static int gigaset_initcshw(struct cardstate *cs)
ucs->bchars[5] = 0x13;
ucs->bulk_out_buffer = NULL;
ucs->bulk_out_urb = NULL;
- //ucs->urb_cmd_out = NULL;
ucs->read_urb = NULL;
tasklet_init(&cs->write_tasklet,
- &gigaset_modem_fill, (unsigned long) cs);
+ gigaset_modem_fill, (unsigned long) cs);
- return 1;
+ return 0;
}
/* Send data from current skb to the device. */
@@ -642,7 +609,7 @@ static int write_modem(struct cardstate *cs)
struct usb_cardstate *ucs = cs->hw.usb;
unsigned long flags;
- gig_dbg(DEBUG_WRITE, "len: %d...", bcs->tx_skb->len);
+ gig_dbg(DEBUG_OUTPUT, "len: %d...", bcs->tx_skb->len);
if (!bcs->tx_skb->len) {
dev_kfree_skb_any(bcs->tx_skb);
@@ -650,9 +617,7 @@ static int write_modem(struct cardstate *cs)
return -EINVAL;
}
- /* Copy data to bulk out buffer and // FIXME copying not necessary
- * transmit data
- */
+ /* Copy data to bulk out buffer and transmit data */
count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size);
skb_copy_from_linear_data(bcs->tx_skb, ucs->bulk_out_buffer, count);
skb_pull(bcs->tx_skb, count);
@@ -663,7 +628,8 @@ static int write_modem(struct cardstate *cs)
if (cs->connected) {
usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev,
usb_sndbulkpipe(ucs->udev,
- ucs->bulk_out_endpointAddr & 0x0f),
+ ucs->bulk_out_endpointAddr &
+ 0x0f),
ucs->bulk_out_buffer, count,
gigaset_write_bulk_callback, cs);
ret = usb_submit_urb(ucs->bulk_out_urb, GFP_ATOMIC);
@@ -679,7 +645,7 @@ static int write_modem(struct cardstate *cs)
if (!bcs->tx_skb->len) {
/* skb sent completely */
- gigaset_skb_sent(bcs, bcs->tx_skb); //FIXME also, when ret<0?
+ gigaset_skb_sent(bcs, bcs->tx_skb);
gig_dbg(DEBUG_INTR, "kfree skb (Adr: %lx)!",
(unsigned long) bcs->tx_skb);
@@ -729,7 +695,7 @@ static int gigaset_probe(struct usb_interface *interface,
dev_info(&udev->dev, "%s: Device matched ... !\n", __func__);
- /* allocate memory for our device state and intialize it */
+ /* allocate memory for our device state and initialize it */
cs = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME);
if (!cs)
return -ENODEV;
@@ -742,7 +708,7 @@ static int gigaset_probe(struct usb_interface *interface,
cs->dev = &interface->dev;
/* save address of controller structure */
- usb_set_intfdata(interface, cs); // dev_set_drvdata(&interface->dev, cs);
+ usb_set_intfdata(interface, cs);
endpoint = &hostif->endpoint[0].desc;
@@ -776,8 +742,8 @@ static int gigaset_probe(struct usb_interface *interface,
buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
ucs->rcvbuf_size = buffer_size;
ucs->int_in_endpointAddr = endpoint->bEndpointAddress;
- cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL);
- if (!cs->inbuf[0].rcvbuf) {
+ ucs->rcvbuf = kmalloc(buffer_size, GFP_KERNEL);
+ if (!ucs->rcvbuf) {
dev_err(cs->dev, "Couldn't allocate rcvbuf\n");
retval = -ENOMEM;
goto error;
@@ -786,9 +752,9 @@ static int gigaset_probe(struct usb_interface *interface,
usb_fill_int_urb(ucs->read_urb, udev,
usb_rcvintpipe(udev,
endpoint->bEndpointAddress & 0x0f),
- cs->inbuf[0].rcvbuf, buffer_size,
+ ucs->rcvbuf, buffer_size,
gigaset_read_int_callback,
- cs->inbuf + 0, endpoint->bInterval);
+ cs, endpoint->bInterval);
retval = usb_submit_urb(ucs->read_urb, GFP_KERNEL);
if (retval) {
@@ -800,9 +766,9 @@ static int gigaset_probe(struct usb_interface *interface,
if (startmode == SM_LOCKED)
cs->mstate = MS_LOCKED;
- if (!gigaset_start(cs)) {
+ retval = gigaset_start(cs);
+ if (retval < 0) {
tasklet_kill(&cs->write_tasklet);
- retval = -ENODEV; //FIXME
goto error;
}
return 0;
@@ -811,11 +777,11 @@ error:
usb_kill_urb(ucs->read_urb);
kfree(ucs->bulk_out_buffer);
usb_free_urb(ucs->bulk_out_urb);
- kfree(cs->inbuf[0].rcvbuf);
+ kfree(ucs->rcvbuf);
usb_free_urb(ucs->read_urb);
usb_set_intfdata(interface, NULL);
ucs->read_urb = ucs->bulk_out_urb = NULL;
- cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
+ ucs->rcvbuf = ucs->bulk_out_buffer = NULL;
usb_put_dev(ucs->udev);
ucs->udev = NULL;
ucs->interface = NULL;
@@ -844,10 +810,10 @@ static void gigaset_disconnect(struct usb_interface *interface)
kfree(ucs->bulk_out_buffer);
usb_free_urb(ucs->bulk_out_urb);
- kfree(cs->inbuf[0].rcvbuf);
+ kfree(ucs->rcvbuf);
usb_free_urb(ucs->read_urb);
ucs->read_urb = ucs->bulk_out_urb = NULL;
- cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL;
+ ucs->rcvbuf = ucs->bulk_out_buffer = NULL;
usb_put_dev(ucs->udev);
ucs->interface = NULL;
@@ -921,19 +887,21 @@ static const struct gigaset_ops ops = {
gigaset_m10x_input,
};
-/**
- * usb_gigaset_init
+/*
* This function is called while kernel-module is loaded
*/
static int __init usb_gigaset_init(void)
{
int result;
- /* allocate memory for our driver state and intialize it */
- if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS,
- GIGASET_MODULENAME, GIGASET_DEVNAME,
- &ops, THIS_MODULE)) == NULL)
+ /* allocate memory for our driver state and initialize it */
+ driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS,
+ GIGASET_MODULENAME, GIGASET_DEVNAME,
+ &ops, THIS_MODULE);
+ if (driver == NULL) {
+ result = -ENOMEM;
goto error;
+ }
/* register this driver with the USB subsystem */
result = usb_register(&gigaset_usb_driver);
@@ -949,12 +917,10 @@ error:
if (driver)
gigaset_freedriver(driver);
driver = NULL;
- return -1;
+ return result;
}
-
-/**
- * usb_gigaset_exit
+/*
* This function is called while unloading the kernel-module
*/
static void __exit usb_gigaset_exit(void)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-15 22:25:58 +0000