From 63b917678fe6d63e633462b5be5a309511bcf3ca Mon Sep 17 00:00:00 2001 From: Mike Dunn Date: Thu, 15 Apr 2010 17:02:09 -0400 Subject: [PATCH] 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: Mike Dunn Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mos7720.c | 388 +++++++++++------------------------ 1 file changed, 122 insertions(+), 266 deletions(-) diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index 2d35d11d04e..30922a7e334 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -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, - enum mos_regs reg, __u8 data) +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, - enum mos_regs reg, __u8 *data) +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 ; @@ -1794,30 +1681,19 @@ static void change_port_settings(struct tty_struct *tty, /* Update the LCR with the correct value */ mos7720_port->shadowLCR &= - ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); + ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); mos7720_port->shadowLCR |= (lData | lParity | lStop); /* 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__); @@ -1998,13 +1865,11 @@ static int mos7720_tiocmget(struct tty_struct *tty, struct file *file) } static int mos7720_tiocmset(struct tty_struct *tty, struct file *file, - unsigned int set, unsigned int clear) + unsigned int set, unsigned int clear) { 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; -- 2.20.1