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path: root/drivers/usb/serial/mos7840.c
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Diffstat (limited to 'drivers/usb/serial/mos7840.c')
-rw-r--r--drivers/usb/serial/mos7840.c557
1 files changed, 226 insertions, 331 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 78f2f6db494d..09d82062b973 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -33,7 +33,7 @@
#include <linux/serial.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
/*
* Version Information
@@ -82,8 +82,8 @@
* Defines used for sending commands to port
*/
-#define WAIT_FOR_EVER (HZ * 0 ) /* timeout urb is wait for ever */
-#define MOS_WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
+#define WAIT_FOR_EVER (HZ * 0) /* timeout urb is wait for ever */
+#define MOS_WDR_TIMEOUT (HZ * 5) /* default urb timeout */
#define MOS_PORT1 0x0200
#define MOS_PORT2 0x0300
@@ -102,8 +102,8 @@
#define MAX_NAME_LEN 64
-#define ZLP_REG1 0x3A //Zero_Flag_Reg1 58
-#define ZLP_REG5 0x3E //Zero_Flag_Reg5 62
+#define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */
+#define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */
/* For higher baud Rates use TIOCEXBAUD */
#define TIOCEXBAUD 0x5462
@@ -142,7 +142,7 @@
#define MOS_MSR_DELTA_RI 0x40
#define MOS_MSR_DELTA_CD 0x80
-// Serial Port register Address
+/* Serial Port register Address */
#define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01))
#define FIFO_CONTROL_REGISTER ((__u16)(0x02))
#define LINE_CONTROL_REGISTER ((__u16)(0x03))
@@ -201,11 +201,11 @@ struct moschip_port {
struct async_icount icount;
struct usb_serial_port *port; /* loop back to the owner of this object */
- /*Offsets */
+ /* Offsets */
__u8 SpRegOffset;
__u8 ControlRegOffset;
__u8 DcrRegOffset;
- //for processing control URBS in interrupt context
+ /* for processing control URBS in interrupt context */
struct urb *control_urb;
struct usb_ctrlrequest *dr;
char *ctrl_buf;
@@ -244,7 +244,7 @@ static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg,
*/
static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg,
- __u16 * val)
+ __u16 *val)
{
struct usb_device *dev = port->serial->dev;
int ret = 0;
@@ -269,16 +269,15 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg,
struct usb_device *dev = port->serial->dev;
val = val & 0x00ff;
- // For the UART control registers, the application number need to be Or'ed
+ /* For the UART control registers, the application number need
+ to be Or'ed */
if (port->serial->num_ports == 4) {
- val |=
- (((__u16) port->number - (__u16) (port->serial->minor)) +
- 1) << 8;
+ val |= (((__u16) port->number -
+ (__u16) (port->serial->minor)) + 1) << 8;
dbg("mos7840_set_uart_reg application number is %x\n", val);
} else {
if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) {
- val |=
- (((__u16) port->number -
+ val |= (((__u16) port->number -
(__u16) (port->serial->minor)) + 1) << 8;
dbg("mos7840_set_uart_reg application number is %x\n",
val);
@@ -302,14 +301,15 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg,
* by passing usb_rcvctrlpipe function as parameter.
*/
static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg,
- __u16 * val)
+ __u16 *val)
{
struct usb_device *dev = port->serial->dev;
int ret = 0;
__u16 Wval;
- //dbg("application number is %4x \n",(((__u16)port->number - (__u16)(port->serial->minor))+1)<<8);
- /*Wval is same as application number */
+ /* dbg("application number is %4x \n",
+ (((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); */
+ /* Wval is same as application number */
if (port->serial->num_ports == 4) {
Wval =
(((__u16) port->number - (__u16) (port->serial->minor)) +
@@ -317,14 +317,12 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg,
dbg("mos7840_get_uart_reg application number is %x\n", Wval);
} else {
if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) {
- Wval =
- (((__u16) port->number -
+ Wval = (((__u16) port->number -
(__u16) (port->serial->minor)) + 1) << 8;
dbg("mos7840_get_uart_reg application number is %x\n",
Wval);
} else {
- Wval =
- (((__u16) port->number -
+ Wval = (((__u16) port->number -
(__u16) (port->serial->minor)) + 2) << 8;
dbg("mos7840_get_uart_reg application number is %x\n",
Wval);
@@ -406,11 +404,11 @@ static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr)
dbg("%s - %02x", __func__, new_lsr);
if (new_lsr & SERIAL_LSR_BI) {
- //
- // Parity and Framing errors only count if they
- // occur exclusive of a break being
- // received.
- //
+ /*
+ * Parity and Framing errors only count if they
+ * occur exclusive of a break being
+ * received.
+ */
new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI);
}
@@ -492,7 +490,7 @@ exit:
}
static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg,
- __u16 * val)
+ __u16 *val)
{
struct usb_device *dev = mcs->port->serial->dev;
struct usb_ctrlrequest *dr = mcs->dr;
@@ -501,7 +499,7 @@ static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg,
dr->bRequestType = MCS_RD_RTYPE;
dr->bRequest = MCS_RDREQ;
- dr->wValue = cpu_to_le16(Wval); //0;
+ dr->wValue = cpu_to_le16(Wval); /* 0 */
dr->wIndex = cpu_to_le16(reg);
dr->wLength = cpu_to_le16(2);
@@ -607,7 +605,8 @@ static void mos7840_interrupt_callback(struct urb *urb)
}
}
}
- if (!(rv < 0)) /* the completion handler for the control urb will resubmit */
+ if (!(rv < 0))
+ /* the completion handler for the control urb will resubmit */
return;
exit:
result = usb_submit_urb(urb, GFP_ATOMIC);
@@ -656,8 +655,8 @@ static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port,
if (!port ||
mos7840_port_paranoia_check(port, function) ||
mos7840_serial_paranoia_check(port->serial, function)) {
- /* then say that we don't have a valid usb_serial thing, which will
- * end up genrating -ENODEV return values */
+ /* then say that we don't have a valid usb_serial thing,
+ * which will end up genrating -ENODEV return values */
return NULL;
}
@@ -710,7 +709,7 @@ static void mos7840_bulk_in_callback(struct urb *urb)
dbg("%s", "Entering ........... \n");
if (urb->actual_length) {
- tty = mos7840_port->port->tty;
+ tty = mos7840_port->port->port.tty;
if (tty) {
tty_buffer_request_room(tty, urb->actual_length);
tty_insert_flip_string(tty, data, urb->actual_length);
@@ -741,8 +740,8 @@ static void mos7840_bulk_in_callback(struct urb *urb)
/*****************************************************************************
* mos7840_bulk_out_data_callback
- * this is the callback function for when we have finished sending serial data
- * on the bulk out endpoint.
+ * this is the callback function for when we have finished sending
+ * serial data on the bulk out endpoint.
*****************************************************************************/
static void mos7840_bulk_out_data_callback(struct urb *urb)
@@ -774,7 +773,7 @@ static void mos7840_bulk_out_data_callback(struct urb *urb)
dbg("%s \n", "Entering .........");
- tty = mos7840_port->port->tty;
+ tty = mos7840_port->port->port.tty;
if (tty && mos7840_port->open)
tty_wakeup(tty);
@@ -804,7 +803,8 @@ static int mos7840_serial_probe(struct usb_serial *serial,
* Otherwise we return a negative error number.
*****************************************************************************/
-static int mos7840_open(struct usb_serial_port *port, struct file *filp)
+static int mos7840_open(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp)
{
int response;
int j;
@@ -847,7 +847,8 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
continue;
}
- urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
+ urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE,
+ GFP_KERNEL);
if (!urb->transfer_buffer) {
usb_free_urb(urb);
mos7840_port->write_urb_pool[j] = NULL;
@@ -868,9 +869,8 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
* 0x08 : SP1/2 Control Reg
*****************************************************************************/
-//NEED to check the following Block
+ /* NEED to check the following Block */
- status = 0;
Data = 0x0;
status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data);
if (status < 0) {
@@ -890,36 +890,35 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
dbg("writing Spreg failed\n");
return -1;
}
-//End of block to be checked
+ /* End of block to be checked */
- status = 0;
Data = 0x0;
- status =
- mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data);
+ status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset,
+ &Data);
if (status < 0) {
dbg("Reading Controlreg failed\n");
return -1;
}
- Data |= 0x08; //Driver done bit
- Data |= 0x20; //rx_disable
- status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
+ Data |= 0x08; /* Driver done bit */
+ Data |= 0x20; /* rx_disable */
+ status = mos7840_set_reg_sync(port,
+ mos7840_port->ControlRegOffset, Data);
if (status < 0) {
dbg("writing Controlreg failed\n");
return -1;
}
- //do register settings here
- // Set all regs to the device default values.
- ////////////////////////////////////
- // First Disable all interrupts.
- ////////////////////////////////////
-
+ /* do register settings here */
+ /* Set all regs to the device default values. */
+ /***********************************
+ * First Disable all interrupts.
+ ***********************************/
Data = 0x00;
status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
if (status < 0) {
dbg("disableing interrupts failed\n");
return -1;
}
- // Set FIFO_CONTROL_REGISTER to the default value
+ /* Set FIFO_CONTROL_REGISTER to the default value */
Data = 0x00;
status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
if (status < 0) {
@@ -946,90 +945,73 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
mos7840_port->shadowLCR = Data;
- Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80
+ Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */
status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
Data = 0x0c;
- status = 0;
status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data);
Data = 0x0;
- status = 0;
status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data);
Data = 0x00;
- status = 0;
status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
Data = Data & ~SERIAL_LCR_DLAB;
- status = 0;
status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
mos7840_port->shadowLCR = Data;
- //clearing Bulkin and Bulkout Fifo
+ /* clearing Bulkin and Bulkout Fifo */
Data = 0x0;
- status = 0;
status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data);
Data = Data | 0x0c;
- status = 0;
status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
Data = Data & ~0x0c;
- status = 0;
status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
- //Finally enable all interrupts
- Data = 0x0;
+ /* Finally enable all interrupts */
Data = 0x0c;
- status = 0;
status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
- //clearing rx_disable
+ /* clearing rx_disable */
Data = 0x0;
- status = 0;
- status =
- mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data);
+ status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset,
+ &Data);
Data = Data & ~0x20;
- status = 0;
- status =
- mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
+ status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset,
+ Data);
- // rx_negate
+ /* rx_negate */
Data = 0x0;
- status = 0;
- status =
- mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data);
+ status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset,
+ &Data);
Data = Data | 0x10;
- status = 0;
- status =
- mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data);
+ status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset,
+ Data);
/* force low_latency on so that our tty_push actually forces *
* the data through,otherwise it is scheduled, and with *
* high data rates (like with OHCI) data can get lost. */
+ if (tty)
+ tty->low_latency = 1;
- if (port->tty)
- port->tty->low_latency = 1;
-/* Check to see if we've set up our endpoint info yet *
- * (can't set it up in mos7840_startup as the structures *
- * were not set up at that time.) */
+ /* Check to see if we've set up our endpoint info yet *
+ * (can't set it up in mos7840_startup as the structures *
+ * were not set up at that time.) */
if (port0->open_ports == 1) {
if (serial->port[0]->interrupt_in_buffer == NULL) {
-
/* set up interrupt urb */
-
usb_fill_int_urb(serial->port[0]->interrupt_in_urb,
- serial->dev,
- usb_rcvintpipe(serial->dev,
- serial->port[0]->
- interrupt_in_endpointAddress),
- serial->port[0]->interrupt_in_buffer,
- serial->port[0]->interrupt_in_urb->
- transfer_buffer_length,
- mos7840_interrupt_callback,
- serial,
- serial->port[0]->interrupt_in_urb->
- interval);
+ serial->dev,
+ usb_rcvintpipe(serial->dev,
+ serial->port[0]->interrupt_in_endpointAddress),
+ serial->port[0]->interrupt_in_buffer,
+ serial->port[0]->interrupt_in_urb->
+ transfer_buffer_length,
+ mos7840_interrupt_callback,
+ serial,
+ serial->port[0]->interrupt_in_urb->interval);
/* start interrupt read for mos7840 *
* will continue as long as mos7840 is connected */
@@ -1084,14 +1066,16 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount));
/* initialize our port settings */
- mos7840_port->shadowMCR = MCR_MASTER_IE; /* Must set to enable ints! */
+ /* Must set to enable ints! */
+ mos7840_port->shadowMCR = MCR_MASTER_IE;
/* send a open port command */
mos7840_port->open = 1;
- //mos7840_change_port_settings(mos7840_port,old_termios);
+ /* mos7840_change_port_settings(mos7840_port,old_termios); */
mos7840_port->icount.tx = 0;
mos7840_port->icount.rx = 0;
- dbg("\n\nusb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p\n\n", serial, mos7840_port, port);
+ dbg("\n\nusb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p\n\n",
+ serial, mos7840_port, port);
return 0;
@@ -1104,11 +1088,12 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp)
* been written, but hasn't made it out the port yet)
* If successful, we return the number of bytes left to be written in the
* system,
- * Otherwise we return a negative error number.
+ * Otherwise we return zero.
*****************************************************************************/
-static int mos7840_chars_in_buffer(struct usb_serial_port *port)
+static int mos7840_chars_in_buffer(struct tty_struct *tty)
{
+ struct usb_serial_port *port = tty->driver_data;
int i;
int chars = 0;
unsigned long flags;
@@ -1118,22 +1103,20 @@ static int mos7840_chars_in_buffer(struct usb_serial_port *port)
if (mos7840_port_paranoia_check(port, __func__)) {
dbg("%s", "Invalid port \n");
- return -1;
+ return 0;
}
mos7840_port = mos7840_get_port_private(port);
if (mos7840_port == NULL) {
dbg("%s \n", "mos7840_break:leaving ...........");
- return -1;
+ return 0;
}
- spin_lock_irqsave(&mos7840_port->pool_lock,flags);
- for (i = 0; i < NUM_URBS; ++i) {
- if (mos7840_port->busy[i]) {
+ spin_lock_irqsave(&mos7840_port->pool_lock, flags);
+ for (i = 0; i < NUM_URBS; ++i)
+ if (mos7840_port->busy[i])
chars += URB_TRANSFER_BUFFER_SIZE;
- }
- }
- spin_unlock_irqrestore(&mos7840_port->pool_lock,flags);
+ spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
dbg("%s - returns %d", __func__, chars);
return chars;
@@ -1149,7 +1132,8 @@ static int mos7840_chars_in_buffer(struct usb_serial_port *port)
* 3. A timeout of 3 seconds without activity has expired
*
************************************************************************/
-static void mos7840_block_until_tx_empty(struct moschip_port *mos7840_port)
+static void mos7840_block_until_tx_empty(struct tty_struct *tty,
+ struct moschip_port *mos7840_port)
{
int timeout = HZ / 10;
int wait = 30;
@@ -1157,12 +1141,11 @@ static void mos7840_block_until_tx_empty(struct moschip_port *mos7840_port)
while (1) {
- count = mos7840_chars_in_buffer(mos7840_port->port);
+ count = mos7840_chars_in_buffer(tty);
/* Check for Buffer status */
- if (count <= 0) {
+ if (count <= 0)
return;
- }
/* Block the thread for a while */
interruptible_sleep_on_timeout(&mos7840_port->wait_chase,
@@ -1185,7 +1168,8 @@ static void mos7840_block_until_tx_empty(struct moschip_port *mos7840_port)
* this function is called by the tty driver when a port is closed
*****************************************************************************/
-static void mos7840_close(struct usb_serial_port *port, struct file *filp)
+static void mos7840_close(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial;
struct moschip_port *mos7840_port;
@@ -1226,32 +1210,28 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp)
}
}
- if (serial->dev) {
+ if (serial->dev)
/* flush and block until tx is empty */
- mos7840_block_until_tx_empty(mos7840_port);
- }
+ mos7840_block_until_tx_empty(tty, mos7840_port);
/* While closing port, shutdown all bulk read, write *
* and interrupt read if they exists */
if (serial->dev) {
-
if (mos7840_port->write_urb) {
dbg("%s", "Shutdown bulk write\n");
usb_kill_urb(mos7840_port->write_urb);
}
-
if (mos7840_port->read_urb) {
dbg("%s", "Shutdown bulk read\n");
usb_kill_urb(mos7840_port->read_urb);
}
if ((&mos7840_port->control_urb)) {
dbg("%s", "Shutdown control read\n");
- // usb_kill_urb (mos7840_port->control_urb);
-
+ /*/ usb_kill_urb (mos7840_port->control_urb); */
}
}
-// if(mos7840_port->ctrl_buf != NULL)
-// kfree(mos7840_port->ctrl_buf);
+/* if(mos7840_port->ctrl_buf != NULL) */
+/* kfree(mos7840_port->ctrl_buf); */
port0->open_ports--;
dbg("mos7840_num_open_ports in close%d:in port%d\n",
port0->open_ports, port->number);
@@ -1264,10 +1244,8 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp)
if (mos7840_port->write_urb) {
/* if this urb had a transfer buffer already (old tx) free it */
-
- if (mos7840_port->write_urb->transfer_buffer != NULL) {
+ if (mos7840_port->write_urb->transfer_buffer != NULL)
kfree(mos7840_port->write_urb->transfer_buffer);
- }
usb_free_urb(mos7840_port->write_urb);
}
@@ -1293,20 +1271,19 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp)
*
************************************************************************/
-static void mos7840_block_until_chase_response(struct moschip_port
- *mos7840_port)
+static void mos7840_block_until_chase_response(struct tty_struct *tty,
+ struct moschip_port *mos7840_port)
{
int timeout = 1 * HZ;
int wait = 10;
int count;
while (1) {
- count = mos7840_chars_in_buffer(mos7840_port->port);
+ count = mos7840_chars_in_buffer(tty);
/* Check for Buffer status */
- if (count <= 0) {
+ if (count <= 0)
return;
- }
/* Block the thread for a while */
interruptible_sleep_on_timeout(&mos7840_port->wait_chase,
@@ -1328,8 +1305,9 @@ static void mos7840_block_until_chase_response(struct moschip_port
* mos7840_break
* this function sends a break to the port
*****************************************************************************/
-static void mos7840_break(struct usb_serial_port *port, int break_state)
+static void mos7840_break(struct tty_struct *tty, int break_state)
{
+ struct usb_serial_port *port = tty->driver_data;
unsigned char data;
struct usb_serial *serial;
struct moschip_port *mos7840_port;
@@ -1350,21 +1328,17 @@ static void mos7840_break(struct usb_serial_port *port, int break_state)
mos7840_port = mos7840_get_port_private(port);
- if (mos7840_port == NULL) {
+ if (mos7840_port == NULL)
return;
- }
-
- if (serial->dev) {
+ if (serial->dev)
/* flush and block until tx is empty */
- mos7840_block_until_chase_response(mos7840_port);
- }
+ mos7840_block_until_chase_response(tty, mos7840_port);
- if (break_state == -1) {
+ if (break_state == -1)
data = mos7840_port->shadowLCR | LCR_SET_BREAK;
- } else {
+ else
data = mos7840_port->shadowLCR & ~LCR_SET_BREAK;
- }
mos7840_port->shadowLCR = data;
dbg("mcs7840_break mos7840_port->shadowLCR is %x\n",
@@ -1383,8 +1357,9 @@ static void mos7840_break(struct usb_serial_port *port, int break_state)
* Otherwise we return a negative error number.
*****************************************************************************/
-static int mos7840_write_room(struct usb_serial_port *port)
+static int mos7840_write_room(struct tty_struct *tty)
{
+ struct usb_serial_port *port = tty->driver_data;
int i;
int room = 0;
unsigned long flags;
@@ -1406,9 +1381,8 @@ static int mos7840_write_room(struct usb_serial_port *port)
spin_lock_irqsave(&mos7840_port->pool_lock, flags);
for (i = 0; i < NUM_URBS; ++i) {
- if (!mos7840_port->busy[i]) {
+ if (!mos7840_port->busy[i])
room += URB_TRANSFER_BUFFER_SIZE;
- }
}
spin_unlock_irqrestore(&mos7840_port->pool_lock, flags);
@@ -1426,7 +1400,7 @@ static int mos7840_write_room(struct usb_serial_port *port)
* return a negative error number.
*****************************************************************************/
-static int mos7840_write(struct usb_serial_port *port,
+static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *data, int count)
{
int status;
@@ -1438,45 +1412,41 @@ static int mos7840_write(struct usb_serial_port *port,
struct moschip_port *mos7840_port;
struct usb_serial *serial;
struct urb *urb;
- //__u16 Data;
+ /* __u16 Data; */
const unsigned char *current_position = data;
unsigned char *data1;
dbg("%s \n", "entering ...........");
- //dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",mos7840_port->shadowLCR);
+ /* dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",
+ mos7840_port->shadowLCR); */
#ifdef NOTMOS7840
Data = 0x00;
- status = 0;
status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
mos7840_port->shadowLCR = Data;
dbg("mos7840_write: LINE_CONTROL_REGISTER is %x\n", Data);
dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",
mos7840_port->shadowLCR);
- //Data = 0x03;
- //status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data);
- //mos7840_port->shadowLCR=Data;//Need to add later
+ /* Data = 0x03; */
+ /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */
+ /* mos7840_port->shadowLCR=Data;//Need to add later */
- Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80
- status = 0;
+ Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */
status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
- //Data = 0x0c;
- //status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data);
+ /* Data = 0x0c; */
+ /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */
Data = 0x00;
- status = 0;
status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data);
dbg("mos7840_write:DLL value is %x\n", Data);
Data = 0x0;
- status = 0;
status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data);
dbg("mos7840_write:DLM value is %x\n", Data);
Data = Data & ~SERIAL_LCR_DLAB;
dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",
mos7840_port->shadowLCR);
- status = 0;
status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
#endif
@@ -1555,8 +1525,7 @@ static int mos7840_write(struct usb_serial_port *port,
mos7840_port->icount.tx += transfer_size;
smp_wmb();
dbg("mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx);
- exit:
-
+exit:
return bytes_sent;
}
@@ -1567,10 +1536,10 @@ static int mos7840_write(struct usb_serial_port *port,
* being read from the port.
*****************************************************************************/
-static void mos7840_throttle(struct usb_serial_port *port)
+static void mos7840_throttle(struct tty_struct *tty)
{
+ struct usb_serial_port *port = tty->driver_data;
struct moschip_port *mos7840_port;
- struct tty_struct *tty;
int status;
if (mos7840_port_paranoia_check(port, __func__)) {
@@ -1592,32 +1561,20 @@ static void mos7840_throttle(struct usb_serial_port *port)
dbg("%s", "Entering .......... \n");
- tty = port->tty;
- if (!tty) {
- dbg("%s - no tty available", __func__);
- return;
- }
-
/* if we are implementing XON/XOFF, send the stop character */
if (I_IXOFF(tty)) {
unsigned char stop_char = STOP_CHAR(tty);
- status = mos7840_write(port, &stop_char, 1);
- if (status <= 0) {
+ status = mos7840_write(tty, port, &stop_char, 1);
+ if (status <= 0)
return;
- }
}
-
/* if we are implementing RTS/CTS, toggle that line */
if (tty->termios->c_cflag & CRTSCTS) {
mos7840_port->shadowMCR &= ~MCR_RTS;
- status = 0;
- status =
- mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
+ status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
mos7840_port->shadowMCR);
-
- if (status < 0) {
+ if (status < 0)
return;
- }
}
return;
@@ -1625,12 +1582,13 @@ static void mos7840_throttle(struct usb_serial_port *port)
/*****************************************************************************
* mos7840_unthrottle
- * this function is called by the tty driver when it wants to resume the data
- * being read from the port (called after SerialThrottle is called)
+ * this function is called by the tty driver when it wants to resume
+ * the data being read from the port (called after mos7840_throttle is
+ * called)
*****************************************************************************/
-static void mos7840_unthrottle(struct usb_serial_port *port)
+static void mos7840_unthrottle(struct tty_struct *tty)
{
- struct tty_struct *tty;
+ struct usb_serial_port *port = tty->driver_data;
int status;
struct moschip_port *mos7840_port = mos7840_get_port_private(port);
@@ -1649,43 +1607,32 @@ static void mos7840_unthrottle(struct usb_serial_port *port)
dbg("%s", "Entering .......... \n");
- tty = port->tty;
- if (!tty) {
- dbg("%s - no tty available", __func__);
- return;
- }
-
/* if we are implementing XON/XOFF, send the start character */
if (I_IXOFF(tty)) {
unsigned char start_char = START_CHAR(tty);
- status = mos7840_write(port, &start_char, 1);
- if (status <= 0) {
+ status = mos7840_write(tty, port, &start_char, 1);
+ if (status <= 0)
return;
- }
}
/* if we are implementing RTS/CTS, toggle that line */
if (tty->termios->c_cflag & CRTSCTS) {
mos7840_port->shadowMCR |= MCR_RTS;
- status = 0;
- status =
- mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
+ status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
mos7840_port->shadowMCR);
- if (status < 0) {
+ if (status < 0)
return;
- }
}
-
- return;
}
-static int mos7840_tiocmget(struct usb_serial_port *port, struct file *file)
+static int mos7840_tiocmget(struct tty_struct *tty, struct file *file)
{
+ struct usb_serial_port *port = tty->driver_data;
struct moschip_port *mos7840_port;
unsigned int result;
__u16 msr;
__u16 mcr;
- int status = 0;
+ int status;
mos7840_port = mos7840_get_port_private(port);
dbg("%s - port %d", __func__, port->number);
@@ -1708,9 +1655,10 @@ static int mos7840_tiocmget(struct usb_serial_port *port, struct file *file)
return result;
}
-static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file,
+static int mos7840_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
+ struct usb_serial_port *port = tty->driver_data;
struct moschip_port *mos7840_port;
unsigned int mcr;
int status;
@@ -1755,7 +1703,7 @@ static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file,
* baud rate.
*****************************************************************************/
static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor,
- __u16 * clk_sel_val)
+ __u16 *clk_sel_val)
{
dbg("%s - %d", __func__, baudRate);
@@ -1807,9 +1755,8 @@ static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor,
/* Check for round off */
round1 = (__u16) (2304000L / baudrate);
round = (__u16) (round1 - (custom * 10));
- if (round > 4) {
+ if (round > 4)
custom++;
- }
*divisor = custom;
dbg(" Baud %d = %d\n", baudrate, custom);
@@ -1857,16 +1804,15 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port,
dbg("%s - port = %d, baud = %d", __func__,
mos7840_port->port->number, baudRate);
- //reset clk_uart_sel in spregOffset
+ /* reset clk_uart_sel in spregOffset */
if (baudRate > 115200) {
#ifdef HW_flow_control
- //NOTE: need to see the pther register to modify
- //setting h/w flow control bit to 1;
- status = 0;
+ /* NOTE: need to see the pther register to modify */
+ /* setting h/w flow control bit to 1 */
Data = 0x2b;
mos7840_port->shadowMCR = Data;
- status =
- mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
+ Data);
if (status < 0) {
dbg("Writing spreg failed in set_serial_baud\n");
return -1;
@@ -1875,12 +1821,11 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port,
} else {
#ifdef HW_flow_control
- //setting h/w flow control bit to 0;
- status = 0;
+ / *setting h/w flow control bit to 0 */
Data = 0xb;
mos7840_port->shadowMCR = Data;
- status =
- mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER,
+ Data);
if (status < 0) {
dbg("Writing spreg failed in set_serial_baud\n");
return -1;
@@ -1889,25 +1834,20 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port,
}
- if (1) //baudRate <= 115200)
- {
+ if (1) { /* baudRate <= 115200) */
clk_sel_val = 0x0;
Data = 0x0;
- status = 0;
- status =
- mos7840_calc_baud_rate_divisor(baudRate, &divisor,
+ status = mos7840_calc_baud_rate_divisor(baudRate, &divisor,
&clk_sel_val);
- status =
- mos7840_get_reg_sync(port, mos7840_port->SpRegOffset,
- &Data);
+ status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset,
+ &Data);
if (status < 0) {
dbg("reading spreg failed in set_serial_baud\n");
return -1;
}
Data = (Data & 0x8f) | clk_sel_val;
- status = 0;
- status =
- mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data);
+ status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset,
+ Data);
if (status < 0) {
dbg("Writing spreg failed in set_serial_baud\n");
return -1;
@@ -1939,7 +1879,6 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port,
mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
}
-
return status;
}
@@ -1949,10 +1888,9 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port,
* the specified new settings.
*****************************************************************************/
-static void mos7840_change_port_settings(struct moschip_port *mos7840_port,
- struct ktermios *old_termios)
+static void mos7840_change_port_settings(struct tty_struct *tty,
+ struct moschip_port *mos7840_port, struct ktermios *old_termios)
{
- struct tty_struct *tty;
int baud;
unsigned cflag;
unsigned iflag;
@@ -1988,8 +1926,6 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port,
return;
}
- tty = mos7840_port->port->tty;
-
dbg("%s", "Entering .......... \n");
lData = LCR_BITS_8;
@@ -2033,9 +1969,8 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port,
dbg("%s - parity = none", __func__);
}
- if (cflag & CMSPAR) {
+ if (cflag & CMSPAR)
lParity = lParity | 0x20;
- }
/* Change the Stop bit */
if (cflag & CSTOPB) {
@@ -2077,16 +2012,13 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port,
/* set up the MCR register and send it to the mos7840 */
mos7840_port->shadowMCR = MCR_MASTER_IE;
- if (cflag & CBAUD) {
+ if (cflag & CBAUD)
mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS);
- }
- if (cflag & CRTSCTS) {
+ if (cflag & CRTSCTS)
mos7840_port->shadowMCR |= (MCR_XON_ANY);
-
- } else {
+ else
mos7840_port->shadowMCR &= ~(MCR_XON_ANY);
- }
Data = mos7840_port->shadowMCR;
mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
@@ -2131,14 +2063,14 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port,
* the termios structure
*****************************************************************************/
-static void mos7840_set_termios(struct usb_serial_port *port,
+static void mos7840_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port,
struct ktermios *old_termios)
{
int status;
unsigned int cflag;
struct usb_serial *serial;
struct moschip_port *mos7840_port;
- struct tty_struct *tty;
dbg("mos7840_set_termios: START\n");
if (mos7840_port_paranoia_check(port, __func__)) {
dbg("%s", "Invalid port \n");
@@ -2157,8 +2089,6 @@ static void mos7840_set_termios(struct usb_serial_port *port,
if (mos7840_port == NULL)
return;
- tty = port->tty;
-
if (!mos7840_port->open) {
dbg("%s - port not opened", __func__);
return;
@@ -2176,7 +2106,7 @@ static void mos7840_set_termios(struct usb_serial_port *port,
/* change the port settings to the new ones specified */
- mos7840_change_port_settings(mos7840_port, old_termios);
+ mos7840_change_port_settings(tty, mos7840_port, old_termios);
if (!mos7840_port->read_urb) {
dbg("%s", "URB KILLED !!!!!\n");
@@ -2205,13 +2135,13 @@ static void mos7840_set_termios(struct usb_serial_port *port,
* allows an RS485 driver to be written in user space.
*****************************************************************************/
-static int mos7840_get_lsr_info(struct moschip_port *mos7840_port,
+static int mos7840_get_lsr_info(struct tty_struct *tty,
unsigned int __user *value)
{
int count;
unsigned int result = 0;
- count = mos7840_chars_in_buffer(mos7840_port->port);
+ count = mos7840_chars_in_buffer(tty);
if (count == 0) {
dbg("%s -- Empty", __func__);
result = TIOCSER_TEMT;
@@ -2227,6 +2157,8 @@ static int mos7840_get_lsr_info(struct moschip_port *mos7840_port,
* function to set modem info
*****************************************************************************/
+/* FIXME: Should be using the model control hooks */
+
static int mos7840_set_modem_info(struct moschip_port *mos7840_port,
unsigned int cmd, unsigned int __user *value)
{
@@ -2282,7 +2214,6 @@ static int mos7840_set_modem_info(struct moschip_port *mos7840_port,
mos7840_port->shadowMCR = mcr;
Data = mos7840_port->shadowMCR;
- status = 0;
status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
if (status < 0) {
dbg("setting MODEM_CONTROL_REGISTER Failed\n");
@@ -2303,10 +2234,8 @@ static int mos7840_get_modem_info(struct moschip_port *mos7840_port,
unsigned int result = 0;
__u16 msr;
unsigned int mcr = mos7840_port->shadowMCR;
- int status = 0;
- status =
- mos7840_get_uart_reg(mos7840_port->port, MODEM_STATUS_REGISTER,
- &msr);
+ mos7840_get_uart_reg(mos7840_port->port,
+ MODEM_STATUS_REGISTER, &msr);
result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */
|((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */
|((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */
@@ -2359,12 +2288,12 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port,
* this function handles any ioctl calls to the driver
*****************************************************************************/
-static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
+static int mos7840_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
+ struct usb_serial_port *port = tty->driver_data;
void __user *argp = (void __user *)arg;
struct moschip_port *mos7840_port;
- struct tty_struct *tty;
struct async_icount cnow;
struct async_icount cprev;
@@ -2381,8 +2310,6 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
if (mos7840_port == NULL)
return -1;
- tty = mos7840_port->port->tty;
-
dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
switch (cmd) {
@@ -2390,9 +2317,10 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
case TIOCSERGETLSR:
dbg("%s (%d) TIOCSERGETLSR", __func__, port->number);
- return mos7840_get_lsr_info(mos7840_port, argp);
+ return mos7840_get_lsr_info(tty, argp);
return 0;
+ /* FIXME: use the modem hooks and remove this */
case TIOCMBIS:
case TIOCMBIC:
case TIOCMSET:
@@ -2418,7 +2346,7 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
cprev = mos7840_port->icount;
while (1) {
- //interruptible_sleep_on(&mos7840_port->delta_msr_wait);
+ /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */
mos7840_port->delta_msr_cond = 0;
wait_event_interruptible(mos7840_port->delta_msr_wait,
(mos7840_port->
@@ -2463,13 +2391,9 @@ static int mos7840_ioctl(struct usb_serial_port *port, struct file *file,
if (copy_to_user(argp, &icount, sizeof(icount)))
return -EFAULT;
return 0;
-
- case TIOCEXBAUD:
- return 0;
default:
break;
}
-
return -ENOIOCTLCMD;
}
@@ -2527,8 +2451,9 @@ static int mos7840_startup(struct usb_serial *serial)
goto error;
}
- /* Initialize all port interrupt end point to port 0 int endpoint *
- * Our device has only one interrupt end point comman to all port */
+ /* Initialize all port interrupt end point to port 0 int
+ * endpoint. Our device has only one interrupt end point
+ * common to all port */
mos7840_port->port = serial->port[i];
mos7840_set_port_private(serial->port[i], mos7840_port);
@@ -2564,27 +2489,23 @@ static int mos7840_startup(struct usb_serial *serial)
mos7840_port->DcrRegOffset = 0x1c;
}
mos7840_dump_serial_port(mos7840_port);
-
mos7840_set_port_private(serial->port[i], mos7840_port);
- //enable rx_disable bit in control register
-
- status =
- mos7840_get_reg_sync(serial->port[i],
- mos7840_port->ControlRegOffset, &Data);
+ /* enable rx_disable bit in control register */
+ status = mos7840_get_reg_sync(serial->port[i],
+ mos7840_port->ControlRegOffset, &Data);
if (status < 0) {
dbg("Reading ControlReg failed status-0x%x\n", status);
break;
} else
dbg("ControlReg Reading success val is %x, status%d\n",
Data, status);
- Data |= 0x08; //setting driver done bit
- Data |= 0x04; //sp1_bit to have cts change reflect in modem status reg
+ Data |= 0x08; /* setting driver done bit */
+ Data |= 0x04; /* sp1_bit to have cts change reflect in
+ modem status reg */
- //Data |= 0x20; //rx_disable bit
- status = 0;
- status =
- mos7840_set_reg_sync(serial->port[i],
+ /* Data |= 0x20; //rx_disable bit */
+ status = mos7840_set_reg_sync(serial->port[i],
mos7840_port->ControlRegOffset, Data);
if (status < 0) {
dbg("Writing ControlReg failed(rx_disable) status-0x%x\n", status);
@@ -2593,13 +2514,11 @@ static int mos7840_startup(struct usb_serial *serial)
dbg("ControlReg Writing success(rx_disable) status%d\n",
status);
- //Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 and 0x24 in DCR3
+ /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2
+ and 0x24 in DCR3 */
Data = 0x01;
- status = 0;
- status =
- mos7840_set_reg_sync(serial->port[i],
- (__u16) (mos7840_port->DcrRegOffset +
- 0), Data);
+ status = mos7840_set_reg_sync(serial->port[i],
+ (__u16) (mos7840_port->DcrRegOffset + 0), Data);
if (status < 0) {
dbg("Writing DCR0 failed status-0x%x\n", status);
break;
@@ -2607,11 +2526,8 @@ static int mos7840_startup(struct usb_serial *serial)
dbg("DCR0 Writing success status%d\n", status);
Data = 0x05;
- status = 0;
- status =
- mos7840_set_reg_sync(serial->port[i],
- (__u16) (mos7840_port->DcrRegOffset +
- 1), Data);
+ status = mos7840_set_reg_sync(serial->port[i],
+ (__u16) (mos7840_port->DcrRegOffset + 1), Data);
if (status < 0) {
dbg("Writing DCR1 failed status-0x%x\n", status);
break;
@@ -2619,22 +2535,17 @@ static int mos7840_startup(struct usb_serial *serial)
dbg("DCR1 Writing success status%d\n", status);
Data = 0x24;
- status = 0;
- status =
- mos7840_set_reg_sync(serial->port[i],
- (__u16) (mos7840_port->DcrRegOffset +
- 2), Data);
+ status = mos7840_set_reg_sync(serial->port[i],
+ (__u16) (mos7840_port->DcrRegOffset + 2), Data);
if (status < 0) {
dbg("Writing DCR2 failed status-0x%x\n", status);
break;
} else
dbg("DCR2 Writing success status%d\n", status);
- // write values in clkstart0x0 and clkmulti 0x20
+ /* write values in clkstart0x0 and clkmulti 0x20 */
Data = 0x0;
- status = 0;
- status =
- mos7840_set_reg_sync(serial->port[i],
+ status = mos7840_set_reg_sync(serial->port[i],
CLK_START_VALUE_REGISTER, Data);
if (status < 0) {
dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status);
@@ -2643,9 +2554,8 @@ static int mos7840_startup(struct usb_serial *serial)
dbg("CLK_START_VALUE_REGISTER Writing success status%d\n", status);
Data = 0x20;
- status =
- mos7840_set_reg_sync(serial->port[i], CLK_MULTI_REGISTER,
- Data);
+ status = mos7840_set_reg_sync(serial->port[i],
+ CLK_MULTI_REGISTER, Data);
if (status < 0) {
dbg("Writing CLK_MULTI_REGISTER failed status-0x%x\n",
status);
@@ -2654,11 +2564,10 @@ static int mos7840_startup(struct usb_serial *serial)
dbg("CLK_MULTI_REGISTER Writing success status%d\n",
status);
- //write value 0x0 to scratchpad register
+ /* write value 0x0 to scratchpad register */
Data = 0x00;
- status =
- mos7840_set_uart_reg(serial->port[i], SCRATCH_PAD_REGISTER,
- Data);
+ status = mos7840_set_uart_reg(serial->port[i],
+ SCRATCH_PAD_REGISTER, Data);
if (status < 0) {
dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n",
status);
@@ -2667,21 +2576,17 @@ static int mos7840_startup(struct usb_serial *serial)
dbg("SCRATCH_PAD_REGISTER Writing success status%d\n",
status);
- //Zero Length flag register
+ /* Zero Length flag register */
if ((mos7840_port->port_num != 1)
&& (serial->num_ports == 2)) {
Data = 0xff;
- status = 0;
status = mos7840_set_reg_sync(serial->port[i],
- (__u16) (ZLP_REG1 +
- ((__u16)
- mos7840_port->
- port_num)),
- Data);
+ (__u16) (ZLP_REG1 +
+ ((__u16)mos7840_port->port_num)), Data);
dbg("ZLIP offset%x\n",
(__u16) (ZLP_REG1 +
- ((__u16) mos7840_port->port_num)));
+ ((__u16) mos7840_port->port_num)));
if (status < 0) {
dbg("Writing ZLP_REG%d failed status-0x%x\n",
i + 2, status);
@@ -2691,13 +2596,9 @@ static int mos7840_startup(struct usb_serial *serial)
i + 2, status);
} else {
Data = 0xff;
- status = 0;
status = mos7840_set_reg_sync(serial->port[i],
- (__u16) (ZLP_REG1 +
- ((__u16)
- mos7840_port->
- port_num) -
- 0x1), Data);
+ (__u16) (ZLP_REG1 +
+ ((__u16)mos7840_port->port_num) - 0x1), Data);
dbg("ZLIP offset%x\n",
(__u16) (ZLP_REG1 +
((__u16) mos7840_port->port_num) - 0x1));
@@ -2712,14 +2613,16 @@ static int mos7840_startup(struct usb_serial *serial)
}
mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL);
mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL);
- mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
- if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || !mos7840_port->dr) {
+ mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest),
+ GFP_KERNEL);
+ if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf ||
+ !mos7840_port->dr) {
status = -ENOMEM;
goto error;
}
}
- //Zero Length flag enable
+ /* Zero Length flag enable */
Data = 0x0f;
status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data);
if (status < 0) {
@@ -2762,7 +2665,7 @@ static void mos7840_shutdown(struct usb_serial *serial)
return;
}
- /* check for the ports to be closed,close the ports and disconnect */
+ /* check for the ports to be closed,close the ports and disconnect */
/* free private structure allocated for serial port *
* stop reads and writes on all ports */
@@ -2843,20 +2746,12 @@ static int __init moschip7840_init(void)
/* Register with the usb */
retval = usb_register(&io_driver);
-
- if (retval)
- goto failed_usb_register;
-
if (retval == 0) {
dbg("%s\n", "Leaving...");
return 0;
}
-
- failed_usb_register:
usb_serial_deregister(&moschip7840_4port_device);
-
- failed_port_device_register:
-
+failed_port_device_register:
return retval;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 05:48:27 +0100