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Commit 63b91767 authored by Mike Dunn's avatar Mike Dunn Committed by Greg Kroah-Hartman
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USB: usbserial: mos7720: cleanup, consolidation, replace send_mos_cmd with {read,write}_mos_reg 

No functionality added or bugs fixed, just improved code consistency and
(hopefully) readability by replacing send_mos_cmd with the register read & write
functions that were used for parallel port registers.  Also shortens overall
file length.

Thoroughly tested, with emphasis on regression testing the serial port.
Signed-off-by: default avatarMike Dunn <mikedunn@newsguy.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent b69578df
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Showing with 122 additions and 266 deletions
drivers/usb/serial/mos7720.c
View file @ 63b91767
......@@ -39,16 +39,13 @@
/*
* Version Information
*/
#define DRIVER_VERSION "2.0"
#define DRIVER_VERSION "2.1"
#define DRIVER_AUTHOR "Aspire Communications pvt Ltd."
#define DRIVER_DESC "Moschip USB Serial Driver"
/* default urb timeout */
#define MOS_WDR_TIMEOUT (HZ * 5)
#define MOS_PORT1 0x0200
#define MOS_PORT2 0x0300
#define MOS_VENREG 0x0000
#define MOS_MAX_PORT 0x02
#define MOS_WRITE 0x0E
#define MOS_READ 0x0D
......@@ -126,6 +123,10 @@ struct mos7715_parport {
/* lock guards against dereferencing NULL ptr in parport ops callbacks */
static DEFINE_SPINLOCK(release_lock);
#endif /* CONFIG_USB_SERIAL_MOS7715_PARPORT */
static const unsigned int dummy; /* for clarity in register access fns */
enum mos_regs {
THR, /* serial port regs */
RHR,
......@@ -184,32 +185,35 @@ static inline __u16 get_reg_index(enum mos_regs reg)
* Return the correct value for the upper byte of the Wvalue field of
* the setup packet for a control endpoint message.
*/
static inline __u16 get_reg_value(enum mos_regs reg)
static inline __u16 get_reg_value(enum mos_regs reg,
unsigned int serial_portnum)
{
if (reg >= SP1_REG) /* control reg */
return 0x0000;
else /* parallel port reg (7715 only) */
else if (reg >= DPR) /* parallel port reg (7715 only) */
return 0x0100;
else /* serial port reg */
return (serial_portnum + 2) << 8;
}
/*
* Write data byte to the specified device register. The data is embedded in
* the value field of the setup packet.
* the value field of the setup packet. serial_portnum is ignored for registers
* not specific to a particular serial port.
*/
static int write_parport_reg(struct mos7715_parport *mos_parport,
static int write_mos_reg(struct usb_serial *serial, unsigned int serial_portnum,
enum mos_regs reg, __u8 data)
{
struct usb_serial *serial = mos_parport->serial;
struct usb_device *usbdev = serial->dev;
unsigned int pipe = usb_sndctrlpipe(usbdev, 0);
__u8 request = (__u8)0x0e;
__u8 requesttype = (__u8)0x40;
__u16 value = get_reg_value(reg) + data;
__u16 index = get_reg_index(reg);
__u16 size = 0;
int status;
status = usb_control_msg(usbdev, pipe, request, requesttype, value,
index, NULL, size, MOS_WDR_TIMEOUT);
__u16 value = get_reg_value(reg, serial_portnum) + data;
int status = usb_control_msg(usbdev, pipe, request, requesttype, value,
index, NULL, 0, MOS_WDR_TIMEOUT);
if (status < 0)
dev_err(&usbdev->dev,
"mos7720: usb_control_msg() failed: %d", status);
......@@ -218,31 +222,33 @@ static int write_parport_reg(struct mos7715_parport *mos_parport,
/*
* Read data byte from the specified device register. The data returned by the
* device is embedded in the value field of the setup packet.
* device is embedded in the value field of the setup packet. serial_portnum is
* ignored for registers that are not specific to a particular serial port.
*/
static int read_parport_reg(struct mos7715_parport *mos_parport,
static int read_mos_reg(struct usb_serial *serial, unsigned int serial_portnum,
enum mos_regs reg, __u8 *data)
{
struct usb_device *usbdev = mos_parport->serial->dev;
struct usb_device *usbdev = serial->dev;
unsigned int pipe = usb_rcvctrlpipe(usbdev, 0);
__u8 request = (__u8)0x0d;
__u8 requesttype = (__u8)0xc0;
__u16 value = get_reg_value(reg);
__u16 index = get_reg_index(reg);
__u16 size = 1;
__u16 value = get_reg_value(reg, serial_portnum);
int status = usb_control_msg(usbdev, pipe, request, requesttype, value,
index, data, size, MOS_WDR_TIMEOUT);
index, data, 1, MOS_WDR_TIMEOUT);
if (status < 0)
dev_err(&usbdev->dev,
"mos7720: usb_control_msg() failed: %d", status);
return status;
}
#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT
static inline int mos7715_change_mode(struct mos7715_parport *mos_parport,
enum mos7715_pp_modes mode)
{
mos_parport->shadowECR = mode;
write_parport_reg(mos_parport, ECR, mos_parport->shadowECR);
write_mos_reg(mos_parport->serial, dummy, ECR, mos_parport->shadowECR);
return 0;
}
......@@ -367,7 +373,7 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport,
}
setup.bRequestType = (__u8)0x40;
setup.bRequest = (__u8)0x0e;
setup.wValue = get_reg_value(reg);
setup.wValue = get_reg_value(reg, dummy);
setup.wIndex = get_reg_index(reg);
setup.wLength = 0;
usb_fill_control_urb(urbtrack->urb, usbdev,
......@@ -474,7 +480,7 @@ static void parport_mos7715_write_data(struct parport *pp, unsigned char d)
if (parport_prologue(pp) < 0)
return;
mos7715_change_mode(mos_parport, SPP);
write_parport_reg(mos_parport, DPR, (__u8)d);
write_mos_reg(mos_parport->serial, dummy, DPR, (__u8)d);
parport_epilogue(pp);
}
......@@ -485,7 +491,7 @@ static unsigned char parport_mos7715_read_data(struct parport *pp)
dbg("%s called", __func__);
if (parport_prologue(pp) < 0)
return 0;
read_parport_reg(mos_parport, DPR, &d);
read_mos_reg(mos_parport->serial, dummy, DPR, &d);
parport_epilogue(pp);
return d;
}
......@@ -498,7 +504,7 @@ static void parport_mos7715_write_control(struct parport *pp, unsigned char d)
if (parport_prologue(pp) < 0)
return;
data = ((__u8)d & 0x0f) | (mos_parport->shadowDCR & 0xf0);
write_parport_reg(mos_parport, DCR, data);
write_mos_reg(mos_parport->serial, dummy, DCR, data);
mos_parport->shadowDCR = data;
parport_epilogue(pp);
}
......@@ -531,7 +537,7 @@ static unsigned char parport_mos7715_frob_control(struct parport *pp,
if (parport_prologue(pp) < 0)
return 0;
mos_parport->shadowDCR = (mos_parport->shadowDCR & (~mask)) ^ val;
write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR);
write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR);
dcr = mos_parport->shadowDCR & 0x0f;
parport_epilogue(pp);
return dcr;
......@@ -570,7 +576,7 @@ static void parport_mos7715_data_forward(struct parport *pp)
return;
mos7715_change_mode(mos_parport, PS2);
mos_parport->shadowDCR &= ~0x20;
write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR);
write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR);
parport_epilogue(pp);
}
......@@ -582,7 +588,7 @@ static void parport_mos7715_data_reverse(struct parport *pp)
return;
mos7715_change_mode(mos_parport, PS2);
mos_parport->shadowDCR |= 0x20;
write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR);
write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR);
parport_epilogue(pp);
}
......@@ -705,14 +711,14 @@ static int mos7715_parport_init(struct usb_serial *serial)
init_completion(&mos_parport->syncmsg_compl);
/* cycle parallel port reset bit */
write_parport_reg(mos_parport, PP_REG, (__u8)0x80);
write_parport_reg(mos_parport, PP_REG, (__u8)0x00);
write_mos_reg(mos_parport->serial, dummy, PP_REG, (__u8)0x80);
write_mos_reg(mos_parport->serial, dummy, PP_REG, (__u8)0x00);
/* initialize device registers */
mos_parport->shadowDCR = DCR_INIT_VAL;
write_parport_reg(mos_parport, DCR, mos_parport->shadowDCR);
write_mos_reg(mos_parport->serial, dummy, DCR, mos_parport->shadowDCR);
mos_parport->shadowECR = ECR_INIT_VAL;
write_parport_reg(mos_parport, ECR, mos_parport->shadowECR);
write_mos_reg(mos_parport->serial, dummy, ECR, mos_parport->shadowECR);
/* register with parport core */
mos_parport->pp = parport_register_port(0, PARPORT_IRQ_NONE,
......@@ -754,7 +760,6 @@ static void mos7720_interrupt_callback(struct urb *urb)
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
case -ENODEV:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d", __func__,
status);
......@@ -980,56 +985,6 @@ static void mos7720_bulk_out_data_callback(struct urb *urb)
tty_kref_put(tty);
}
/*
* send_mos_cmd
* this function will be used for sending command to device
*/
static int send_mos_cmd(struct usb_serial *serial, __u8 request, __u16 value,
__u16 index, u8 *data)
{
int status;
u8 *buf;
u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
if (value < MOS_MAX_PORT) {
if (product == MOSCHIP_DEVICE_ID_7715)
value = 0x0200; /* identifies the 7715's serial port */
else
value = value*0x100+0x200;
} else {
value = 0x0000;
if ((product == MOSCHIP_DEVICE_ID_7715) &&
(index != 0x08)) {
dbg("serial->product== MOSCHIP_DEVICE_ID_7715");
/* index = 0x01 ; */
}
}
if (request == MOS_WRITE) {
value = value + *data;
status = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0), MOS_WRITE,
0x40, value, index, NULL, 0, MOS_WDR_TIMEOUT);
} else {
buf = kmalloc(1, GFP_KERNEL);
if (!buf) {
status = -ENOMEM;
goto out;
}
status = usb_control_msg(serial->dev,
usb_rcvctrlpipe(serial->dev, 0), MOS_READ,
0xc0, value, index, buf, 1, MOS_WDR_TIMEOUT);
*data = *buf;
kfree(buf);
}
out:
if (status < 0)
dbg("Command Write failed Value %x index %x", value, index);
return status;
}
/*
* mos77xx_probe
* this function installs the appropriate read interrupt endpoint callback
......@@ -1066,7 +1021,7 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port)
struct moschip_port *mos7720_port;
int response;
int port_number;
char data;
__u8 data;
int allocated_urbs = 0;
int j;
......@@ -1122,65 +1077,35 @@ static int mos7720_open(struct tty_struct *tty, struct usb_serial_port *port)
* 0x08 : SP1/2 Control Reg
*/
port_number = port->number - port->serial->minor;
send_mos_cmd(port->serial, MOS_READ, port_number, UART_LSR, &data);
read_mos_reg(serial, port_number, LSR, &data);
dbg("SS::%p LSR:%x", mos7720_port, data);
dbg("Check:Sending Command ..........");
data = 0x02;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x01, &data);
data = 0x02;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x02, &data);
write_mos_reg(serial, dummy, SP1_REG, 0x02);
write_mos_reg(serial, dummy, SP2_REG, 0x02);
data = 0x00;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data);
data = 0x00;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data);
write_mos_reg(serial, port_number, IER, 0x00);
write_mos_reg(serial, port_number, FCR, 0x00);
data = 0xCF;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data);
data = 0x03;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data);
data = 0x0b;
mos7720_port->shadowMCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
data = 0x0b;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
data = 0x00;
send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data);
data = 0x00;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data);
/* data = 0x00;
send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, port_number + 1, &data);
data = 0x03;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data);
data = 0x00;
send_mos_cmd(port->serial, MOS_WRITE, MOS_MAX_PORT,
port_number + 1, &data);
*/
data = 0x00;
send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data);
write_mos_reg(serial, port_number, FCR, 0xcf);
mos7720_port->shadowLCR = 0x03;
write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR);
mos7720_port->shadowMCR = 0x0b;
write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR);
write_mos_reg(serial, port_number, SP_CONTROL_REG, 0x00);
read_mos_reg(serial, dummy, SP_CONTROL_REG, &data);
data = data | (port->number - port->serial->minor + 1);
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data);
data = 0x83;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data);
data = 0x0c;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data);
data = 0x00;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data);
data = 0x03;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data);
data = 0x0c;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data);
data = 0x0c;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data);
write_mos_reg(serial, dummy, SP_CONTROL_REG, data);
mos7720_port->shadowLCR = 0x83;
write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR);
write_mos_reg(serial, port_number, THR, 0x0c);
write_mos_reg(serial, port_number, IER, 0x00);
mos7720_port->shadowLCR = 0x03;
write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR);
write_mos_reg(serial, port_number, IER, 0x0c);
response = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (response)
......@@ -1236,7 +1161,6 @@ static void mos7720_close(struct usb_serial_port *port)
{
struct usb_serial *serial;
struct moschip_port *mos7720_port;
char data;
int j;
dbg("mos7720_close:entering...");
......@@ -1269,13 +1193,10 @@ static void mos7720_close(struct usb_serial_port *port)
/* these commands must not be issued if the device has
* been disconnected */
if (!serial->disconnected) {
data = 0x00;
send_mos_cmd(serial, MOS_WRITE,
port->number - port->serial->minor, 0x04, &data);
data = 0x00;
send_mos_cmd(serial, MOS_WRITE,
port->number - port->serial->minor, 0x01, &data);
write_mos_reg(serial, port->number - port->serial->minor,
MCR, 0x00);
write_mos_reg(serial, port->number - port->serial->minor,
IER, 0x00);
}
mutex_unlock(&serial->disc_mutex);
mos7720_port->open = 0;
......@@ -1304,8 +1225,8 @@ static void mos7720_break(struct tty_struct *tty, int break_state)
data = mos7720_port->shadowLCR & ~UART_LCR_SBC;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor,
0x03, &data);
write_mos_reg(serial, port->number - port->serial->minor,
LCR, mos7720_port->shadowLCR);
return;
}
......@@ -1450,9 +1371,8 @@ static void mos7720_throttle(struct tty_struct *tty)
/* if we are implementing RTS/CTS, toggle that line */
if (tty->termios->c_cflag & CRTSCTS) {
mos7720_port->shadowMCR &= ~UART_MCR_RTS;
status = send_mos_cmd(port->serial, MOS_WRITE,
port->number - port->serial->minor,
UART_MCR, &mos7720_port->shadowMCR);
write_mos_reg(port->serial, port->number - port->serial->minor,
MCR, mos7720_port->shadowMCR);
if (status != 0)
return;
}
......@@ -1485,9 +1405,8 @@ static void mos7720_unthrottle(struct tty_struct *tty)
/* if we are implementing RTS/CTS, toggle that line */
if (tty->termios->c_cflag & CRTSCTS) {
mos7720_port->shadowMCR |= UART_MCR_RTS;
status = send_mos_cmd(port->serial, MOS_WRITE,
port->number - port->serial->minor,
UART_MCR, &mos7720_port->shadowMCR);
write_mos_reg(port->serial, port->number - port->serial->minor,
MCR, mos7720_port->shadowMCR);
if (status != 0)
return;
}
......@@ -1497,11 +1416,10 @@ static void mos7720_unthrottle(struct tty_struct *tty)
static int set_higher_rates(struct moschip_port *mos7720_port,
unsigned int baud)
{
unsigned char data;
struct usb_serial_port *port;
struct usb_serial *serial;
int port_number;
enum mos_regs sp_reg;
if (mos7720_port == NULL)
return -EINVAL;
......@@ -1514,59 +1432,35 @@ static int set_higher_rates(struct moschip_port *mos7720_port,
dbg("Sending Setting Commands ..........");
port_number = port->number - port->serial->minor;
data = 0x000;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data);
data = 0x000;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x02, &data);
data = 0x0CF;
send_mos_cmd(serial, MOS_WRITE, port->number, 0x02, &data);
data = 0x00b;
mos7720_port->shadowMCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
data = 0x00b;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
data = 0x000;
send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data);
data = 0x000;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data);
write_mos_reg(serial, port_number, IER, 0x00);
write_mos_reg(serial, port_number, FCR, 0x00);
write_mos_reg(serial, port_number, FCR, 0xcf);
mos7720_port->shadowMCR = 0x0b;
write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR);
write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x00);
/***********************************************
* Set for higher rates *
***********************************************/
/* writing baud rate verbatum into uart clock field clearly not right */
data = baud * 0x10;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, port_number + 1, &data);
data = 0x003;
send_mos_cmd(serial, MOS_READ, MOS_MAX_PORT, 0x08, &data);
data = 0x003;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data);
data = 0x02b;
mos7720_port->shadowMCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
data = 0x02b;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
if (port_number == 0)
sp_reg = SP1_REG;
else
sp_reg = SP2_REG;
write_mos_reg(serial, dummy, sp_reg, baud * 0x10);
write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x03);
mos7720_port->shadowMCR = 0x2b;
write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR);
/***********************************************
* Set DLL/DLM
***********************************************/
data = mos7720_port->shadowLCR | UART_LCR_DLAB;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data);
data = 0x001; /* DLL */
send_mos_cmd(serial, MOS_WRITE, port_number, 0x00, &data);
data = 0x000; /* DLM */
send_mos_cmd(serial, MOS_WRITE, port_number, 0x01, &data);
data = mos7720_port->shadowLCR & ~UART_LCR_DLAB;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x03, &data);
mos7720_port->shadowLCR = mos7720_port->shadowLCR | UART_LCR_DLAB;
write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR);
write_mos_reg(serial, port_number, DLL, 0x01);
write_mos_reg(serial, port_number, DLM, 0x00);
mos7720_port->shadowLCR = mos7720_port->shadowLCR & ~UART_LCR_DLAB;
write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR);
return 0;
}
......@@ -1654,7 +1548,6 @@ static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port,
struct usb_serial *serial;
int divisor;
int status;
unsigned char data;
unsigned char number;
if (mos7720_port == NULL)
......@@ -1676,21 +1569,16 @@ static int send_cmd_write_baud_rate(struct moschip_port *mos7720_port,
}
/* Enable access to divisor latch */
data = mos7720_port->shadowLCR | UART_LCR_DLAB;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, number, UART_LCR, &data);
mos7720_port->shadowLCR = mos7720_port->shadowLCR | UART_LCR_DLAB;
write_mos_reg(serial, number, LCR, mos7720_port->shadowLCR);
/* Write the divisor */
data = ((unsigned char)(divisor & 0xff));
send_mos_cmd(serial, MOS_WRITE, number, 0x00, &data);
data = ((unsigned char)((divisor & 0xff00) >> 8));
send_mos_cmd(serial, MOS_WRITE, number, 0x01, &data);
write_mos_reg(serial, number, DLL, (__u8)(divisor & 0xff));
write_mos_reg(serial, number, DLM, (__u8)((divisor & 0xff00) >> 8));
/* Disable access to divisor latch */
data = mos7720_port->shadowLCR & ~UART_LCR_DLAB;
mos7720_port->shadowLCR = data;
send_mos_cmd(serial, MOS_WRITE, number, 0x03, &data);
mos7720_port->shadowLCR = mos7720_port->shadowLCR & ~UART_LCR_DLAB;
write_mos_reg(serial, number, LCR, mos7720_port->shadowLCR);
return status;
}
......@@ -1715,7 +1603,6 @@ static void change_port_settings(struct tty_struct *tty,
__u8 lStop;
int status;
int port_number;
char data;
if (mos7720_port == NULL)
return ;
......@@ -1799,25 +1686,14 @@ static void change_port_settings(struct tty_struct *tty,
/* Disable Interrupts */
data = 0x00;
send_mos_cmd(serial, MOS_WRITE, port->number - port->serial->minor,
UART_IER, &data);
data = 0x00;
send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data);
data = 0xcf;
send_mos_cmd(serial, MOS_WRITE, port_number, UART_FCR, &data);
write_mos_reg(serial, port_number, IER, 0x00);
write_mos_reg(serial, port_number, FCR, 0x00);
write_mos_reg(serial, port_number, FCR, 0xcf);
/* Send the updated LCR value to the mos7720 */
data = mos7720_port->shadowLCR;
send_mos_cmd(serial, MOS_WRITE, port_number, UART_LCR, &data);
data = 0x00b;
mos7720_port->shadowMCR = data;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
data = 0x00b;
send_mos_cmd(serial, MOS_WRITE, port_number, 0x04, &data);
write_mos_reg(serial, port_number, LCR, mos7720_port->shadowLCR);
mos7720_port->shadowMCR = 0x0b;
write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR);
/* set up the MCR register and send it to the mos7720 */
mos7720_port->shadowMCR = UART_MCR_OUT2;
......@@ -1828,21 +1704,15 @@ static void change_port_settings(struct tty_struct *tty,
mos7720_port->shadowMCR |= (UART_MCR_XONANY);
/* To set hardware flow control to the specified *
* serial port, in SP1/2_CONTROL_REG */
if (port->number) {
data = 0x001;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT,
0x08, &data);
} else {
data = 0x002;
send_mos_cmd(serial, MOS_WRITE, MOS_MAX_PORT,
0x08, &data);
}
} else {
if (port->number)
write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x01);
else
write_mos_reg(serial, dummy, SP_CONTROL_REG, 0x02);
} else
mos7720_port->shadowMCR &= ~(UART_MCR_XONANY);
}
data = mos7720_port->shadowMCR;
send_mos_cmd(serial, MOS_WRITE, port_number, UART_MCR, &data);
write_mos_reg(serial, port_number, MCR, mos7720_port->shadowMCR);
/* Determine divisor based on baud rate */
baud = tty_get_baud_rate(tty);
......@@ -1855,8 +1725,7 @@ static void change_port_settings(struct tty_struct *tty,
if (baud >= 230400) {
set_higher_rates(mos7720_port, baud);
/* Enable Interrupts */
data = 0x0c;
send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data);
write_mos_reg(serial, port_number, IER, 0x0c);
return;
}
......@@ -1867,8 +1736,7 @@ static void change_port_settings(struct tty_struct *tty,
if (cflag & CBAUD)
tty_encode_baud_rate(tty, baud, baud);
/* Enable Interrupts */
data = 0x0c;
send_mos_cmd(serial, MOS_WRITE, port_number, UART_IER, &data);
write_mos_reg(serial, port_number, IER, 0x0c);
if (port->read_urb->status != -EINPROGRESS) {
port->read_urb->dev = serial->dev;
......@@ -1959,8 +1827,7 @@ static int get_lsr_info(struct tty_struct *tty,
count = mos7720_chars_in_buffer(tty);
if (count == 0) {
send_mos_cmd(port->serial, MOS_READ, port_number,
UART_LSR, &data);
read_mos_reg(port->serial, port_number, LSR, &data);
if ((data & (UART_LSR_TEMT | UART_LSR_THRE))
== (UART_LSR_TEMT | UART_LSR_THRE)) {
dbg("%s -- Empty", __func__);
......@@ -2003,8 +1870,6 @@ static int mos7720_tiocmset(struct tty_struct *tty, struct file *file,
struct usb_serial_port *port = tty->driver_data;
struct moschip_port *mos7720_port = usb_get_serial_port_data(port);
unsigned int mcr ;
unsigned char lmcr;
dbg("%s - port %d", __func__, port->number);
dbg("he was at tiocmget");
......@@ -2025,10 +1890,8 @@ static int mos7720_tiocmset(struct tty_struct *tty, struct file *file,
mcr &= ~UART_MCR_LOOP;
mos7720_port->shadowMCR = mcr;
lmcr = mos7720_port->shadowMCR;
send_mos_cmd(port->serial, MOS_WRITE,
port->number - port->serial->minor, UART_MCR, &lmcr);
write_mos_reg(port->serial, port->number - port->serial->minor,
MCR, mos7720_port->shadowMCR);
return 0;
}
......@@ -2038,7 +1901,6 @@ static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd,
{
unsigned int mcr ;
unsigned int arg;
unsigned char data;
struct usb_serial_port *port;
......@@ -2073,10 +1935,8 @@ static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd,
}
mos7720_port->shadowMCR = mcr;
data = mos7720_port->shadowMCR;
send_mos_cmd(port->serial, MOS_WRITE,
port->number - port->serial->minor, UART_MCR, &data);
write_mos_reg(port->serial, port->number - port->serial->minor,
MCR, mos7720_port->shadowMCR);
return 0;
}
......@@ -2269,11 +2129,7 @@ static int mos7720_startup(struct usb_serial *serial)
}
#endif
/* LSR For Port 1 */
send_mos_cmd(serial, MOS_READ, 0x00, UART_LSR, &data);
dbg("LSR:%x", data);
/* LSR For Port 2 */
send_mos_cmd(serial, MOS_READ, 0x01, UART_LSR, &data);
read_mos_reg(serial, 0, LSR, &data);
dbg("LSR:%x", data);
return 0;
......
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