diff options
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
| -rw-r--r-- | drivers/usb/serial/mos7840.c | 762 |
1 files changed, 101 insertions, 661 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index a698d46ba773..23f91d658cb4 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -89,17 +89,10 @@ /* For higher baud Rates use TIOCEXBAUD */ #define TIOCEXBAUD 0x5462 -/* vendor id and device id defines */ - -/* The native mos7840/7820 component */ -#define USB_VENDOR_ID_MOSCHIP 0x9710 -#define MOSCHIP_DEVICE_ID_7840 0x7840 -#define MOSCHIP_DEVICE_ID_7843 0x7843 -#define MOSCHIP_DEVICE_ID_7820 0x7820 -#define MOSCHIP_DEVICE_ID_7810 0x7810 -/* The native component can have its vendor/device id's overridden - * in vendor-specific implementations. Such devices can be handled - * by making a change here, in id_table. +/* + * Vendor id and device id defines + * + * NOTE: Do not add new defines, add entries directly to the id_table instead. */ #define USB_VENDOR_ID_BANDB 0x0856 #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 @@ -116,14 +109,6 @@ #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 -/* This driver also supports - * ATEN UC2324 device using Moschip MCS7840 - * ATEN UC2322 device using Moschip MCS7820 - */ -#define USB_VENDOR_ID_ATENINTL 0x0557 -#define ATENINTL_DEVICE_ID_UC2324 0x2011 -#define ATENINTL_DEVICE_ID_UC2322 0x7820 - /* Interrupt Routine Defines */ #define SERIAL_IIR_RLS 0x06 @@ -171,30 +156,37 @@ #define LED_OFF_MS 500 enum mos7840_flag { - MOS7840_FLAG_CTRL_BUSY, MOS7840_FLAG_LED_BUSY, }; +#define MCS_PORT_MASK GENMASK(2, 0) +#define MCS_PORTS(nr) ((nr) & MCS_PORT_MASK) +#define MCS_LED BIT(3) + +#define MCS_DEVICE(vid, pid, flags) \ + USB_DEVICE((vid), (pid)), .driver_info = (flags) + static const struct usb_device_id id_table[] = { - {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, - {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7843)}, - {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, - {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, - {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, - {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, + { MCS_DEVICE(0x0557, 0x2011, MCS_PORTS(4)) }, /* ATEN UC2324 */ + { MCS_DEVICE(0x0557, 0x7820, MCS_PORTS(2)) }, /* ATEN UC2322 */ + { MCS_DEVICE(0x110a, 0x2210, MCS_PORTS(2)) }, /* Moxa UPort 2210 */ + { MCS_DEVICE(0x9710, 0x7810, MCS_PORTS(1) | MCS_LED) }, /* ASIX MCS7810 */ + { MCS_DEVICE(0x9710, 0x7820, MCS_PORTS(2)) }, /* MosChip MCS7820 */ + { MCS_DEVICE(0x9710, 0x7840, MCS_PORTS(4)) }, /* MosChip MCS7840 */ + { MCS_DEVICE(0x9710, 0x7843, MCS_PORTS(3)) }, /* ASIX MCS7840 3 port */ + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P) }, + { USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4) }, {} /* terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table); @@ -206,19 +198,12 @@ struct moschip_port { struct urb *read_urb; /* read URB for this port */ __u8 shadowLCR; /* last LCR value received */ __u8 shadowMCR; /* last MCR value received */ - char open; - char open_ports; struct usb_serial_port *port; /* loop back to the owner of this object */ /* Offsets */ __u8 SpRegOffset; __u8 ControlRegOffset; __u8 DcrRegOffset; - /* for processing control URBS in interrupt context */ - struct urb *control_urb; - struct usb_ctrlrequest *dr; - char *ctrl_buf; - int MsrLsr; spinlock_t pool_lock; struct urb *write_urb_pool[NUM_URBS]; @@ -360,150 +345,11 @@ static void mos7840_dump_serial_port(struct usb_serial_port *port, /************************************************************************/ /************************************************************************/ -/* I N T E R F A C E F U N C T I O N S */ -/* I N T E R F A C E F U N C T I O N S */ -/************************************************************************/ -/************************************************************************/ - -static inline void mos7840_set_port_private(struct usb_serial_port *port, - struct moschip_port *data) -{ - usb_set_serial_port_data(port, (void *)data); -} - -static inline struct moschip_port *mos7840_get_port_private(struct - usb_serial_port - *port) -{ - return (struct moschip_port *)usb_get_serial_port_data(port); -} - -static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) -{ - struct moschip_port *mos7840_port; - struct async_icount *icount; - mos7840_port = port; - if (new_msr & - (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | - MOS_MSR_DELTA_CD)) { - icount = &mos7840_port->port->icount; - - /* update input line counters */ - if (new_msr & MOS_MSR_DELTA_CTS) - icount->cts++; - if (new_msr & MOS_MSR_DELTA_DSR) - icount->dsr++; - if (new_msr & MOS_MSR_DELTA_CD) - icount->dcd++; - if (new_msr & MOS_MSR_DELTA_RI) - icount->rng++; - - wake_up_interruptible(&port->port->port.delta_msr_wait); - } -} - -static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) -{ - struct async_icount *icount; - - if (new_lsr & SERIAL_LSR_BI) { - /* - * Parity and Framing errors only count if they - * occur exclusive of a break being - * received. - */ - new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); - } - - /* update input line counters */ - icount = &port->port->icount; - if (new_lsr & SERIAL_LSR_BI) - icount->brk++; - if (new_lsr & SERIAL_LSR_OE) - icount->overrun++; - if (new_lsr & SERIAL_LSR_PE) - icount->parity++; - if (new_lsr & SERIAL_LSR_FE) - icount->frame++; -} - -/************************************************************************/ -/************************************************************************/ /* U S B C A L L B A C K F U N C T I O N S */ /* U S B C A L L B A C K F U N C T I O N S */ /************************************************************************/ /************************************************************************/ -static void mos7840_control_callback(struct urb *urb) -{ - unsigned char *data; - struct moschip_port *mos7840_port; - struct device *dev = &urb->dev->dev; - __u8 regval = 0x0; - int status = urb->status; - - mos7840_port = urb->context; - - switch (status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); - goto out; - default: - dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); - goto out; - } - - dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); - if (urb->actual_length < 1) - goto out; - - dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__, - mos7840_port->MsrLsr, mos7840_port->port_num); - data = urb->transfer_buffer; - regval = (__u8) data[0]; - dev_dbg(dev, "%s data is %x\n", __func__, regval); - if (mos7840_port->MsrLsr == 0) - mos7840_handle_new_msr(mos7840_port, regval); - else if (mos7840_port->MsrLsr == 1) - mos7840_handle_new_lsr(mos7840_port, regval); -out: - clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mos7840_port->flags); -} - -static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, - __u16 *val) -{ - struct usb_device *dev = mcs->port->serial->dev; - struct usb_ctrlrequest *dr = mcs->dr; - unsigned char *buffer = mcs->ctrl_buf; - int ret; - - if (test_and_set_bit_lock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags)) - return -EBUSY; - - dr->bRequestType = MCS_RD_RTYPE; - dr->bRequest = MCS_RDREQ; - dr->wValue = cpu_to_le16(Wval); /* 0 */ - dr->wIndex = cpu_to_le16(reg); - dr->wLength = cpu_to_le16(2); - - usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), - (unsigned char *)dr, buffer, 2, - mos7840_control_callback, mcs); - mcs->control_urb->transfer_buffer_length = 2; - ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); - if (ret) - clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags); - - return ret; -} - static void mos7840_set_led_callback(struct urb *urb) { switch (urb->status) { @@ -580,146 +426,6 @@ static void mos7840_led_activity(struct usb_serial_port *port) } /***************************************************************************** - * mos7840_interrupt_callback - * this is the callback function for when we have received data on the - * interrupt endpoint. - *****************************************************************************/ - -static void mos7840_interrupt_callback(struct urb *urb) -{ - int result; - int length; - struct moschip_port *mos7840_port; - struct usb_serial *serial; - __u16 Data; - unsigned char *data; - __u8 sp[5]; - int i, rv = 0; - __u16 wval, wreg = 0; - int status = urb->status; - - switch (status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", - __func__, status); - return; - default: - dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", - __func__, status); - goto exit; - } - - length = urb->actual_length; - data = urb->transfer_buffer; - - serial = urb->context; - - /* Moschip get 5 bytes - * Byte 1 IIR Port 1 (port.number is 0) - * Byte 2 IIR Port 2 (port.number is 1) - * Byte 3 IIR Port 3 (port.number is 2) - * Byte 4 IIR Port 4 (port.number is 3) - * Byte 5 FIFO status for both */ - - if (length > 5) { - dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); - return; - } - - sp[0] = (__u8) data[0]; - sp[1] = (__u8) data[1]; - sp[2] = (__u8) data[2]; - sp[3] = (__u8) data[3]; - - for (i = 0; i < serial->num_ports; i++) { - mos7840_port = mos7840_get_port_private(serial->port[i]); - wval = ((__u16)serial->port[i]->port_number + 1) << 8; - if (mos7840_port->open) { - if (sp[i] & 0x01) { - dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); - } else { - switch (sp[i] & 0x0f) { - case SERIAL_IIR_RLS: - dev_dbg(&urb->dev->dev, "Serial Port %d: Receiver status error or \n", i); - dev_dbg(&urb->dev->dev, "address bit detected in 9-bit mode\n"); - mos7840_port->MsrLsr = 1; - wreg = LINE_STATUS_REGISTER; - break; - case SERIAL_IIR_MS: - dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); - mos7840_port->MsrLsr = 0; - wreg = MODEM_STATUS_REGISTER; - break; - } - rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); - } - } - } - if (!(rv < 0)) - /* the completion handler for the control urb will resubmit */ - return; -exit: - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) { - dev_err(&urb->dev->dev, - "%s - Error %d submitting interrupt urb\n", - __func__, result); - } -} - -static int mos7840_port_paranoia_check(struct usb_serial_port *port, - const char *function) -{ - if (!port) { - pr_debug("%s - port == NULL\n", function); - return -1; - } - if (!port->serial) { - pr_debug("%s - port->serial == NULL\n", function); - return -1; - } - - return 0; -} - -/* Inline functions to check the sanity of a pointer that is passed to us */ -static int mos7840_serial_paranoia_check(struct usb_serial *serial, - const char *function) -{ - if (!serial) { - pr_debug("%s - serial == NULL\n", function); - return -1; - } - if (!serial->type) { - pr_debug("%s - serial->type == NULL!\n", function); - return -1; - } - - return 0; -} - -static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, - const char *function) -{ - /* if no port was specified, or it fails a paranoia check */ - 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 */ - return NULL; - } - - return port->serial; -} - -/***************************************************************************** * mos7840_bulk_in_callback * this is the callback function for when we have received data on the * bulk in endpoint. @@ -727,35 +433,18 @@ static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, static void mos7840_bulk_in_callback(struct urb *urb) { + struct moschip_port *mos7840_port = urb->context; + struct usb_serial_port *port = mos7840_port->port; int retval; unsigned char *data; - struct usb_serial *serial; - struct usb_serial_port *port; - struct moschip_port *mos7840_port; int status = urb->status; - mos7840_port = urb->context; - if (!mos7840_port) - return; - if (status) { dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); mos7840_port->read_urb_busy = false; return; } - port = mos7840_port->port; - if (mos7840_port_paranoia_check(port, __func__)) { - mos7840_port->read_urb_busy = false; - return; - } - - serial = mos7840_get_usb_serial(port, __func__); - if (!serial) { - mos7840_port->read_urb_busy = false; - return; - } - data = urb->transfer_buffer; usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); @@ -767,12 +456,6 @@ static void mos7840_bulk_in_callback(struct urb *urb) dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); } - if (!mos7840_port->read_urb) { - dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); - mos7840_port->read_urb_busy = false; - return; - } - if (mos7840_port->has_led) mos7840_led_activity(port); @@ -793,14 +476,12 @@ static void mos7840_bulk_in_callback(struct urb *urb) static void mos7840_bulk_out_data_callback(struct urb *urb) { - struct moschip_port *mos7840_port; - struct usb_serial_port *port; + struct moschip_port *mos7840_port = urb->context; + struct usb_serial_port *port = mos7840_port->port; int status = urb->status; unsigned long flags; int i; - mos7840_port = urb->context; - port = mos7840_port->port; spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; i++) { if (urb == mos7840_port->write_urb_pool[i]) { @@ -815,11 +496,7 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) return; } - if (mos7840_port_paranoia_check(port, __func__)) - return; - - if (mos7840_port->open) - tty_port_tty_wakeup(&port->port); + tty_port_tty_wakeup(&port->port); } @@ -836,32 +513,16 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) { + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); + struct usb_serial *serial = port->serial; int response; int j; - struct usb_serial *serial; struct urb *urb; __u16 Data; int status; - struct moschip_port *mos7840_port; - struct moschip_port *port0; - - if (mos7840_port_paranoia_check(port, __func__)) - return -ENODEV; - - serial = port->serial; - - if (mos7840_serial_paranoia_check(serial, __func__)) - return -ENODEV; - - mos7840_port = mos7840_get_port_private(port); - port0 = mos7840_get_port_private(serial->port[0]); - - if (mos7840_port == NULL || port0 == NULL) - return -ENODEV; usb_clear_halt(serial->dev, port->write_urb->pipe); usb_clear_halt(serial->dev, port->read_urb->pipe); - port0->open_ports++; /* Initialising the write urb pool */ for (j = 0; j < NUM_URBS; ++j) { @@ -1012,41 +673,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); - /* 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) { - /* FIXME: Buffer never NULL, so URB is not submitted. */ - 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); - - /* start interrupt read for mos7840 */ - response = - usb_submit_urb(serial->port[0]->interrupt_in_urb, - GFP_KERNEL); - if (response) { - dev_err(&port->dev, "%s - Error %d submitting " - "interrupt urb\n", __func__, response); - } - - } - - } - - /* 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.) */ - dev_dbg(&port->dev, "port number is %d\n", port->port_number); dev_dbg(&port->dev, "minor number is %d\n", port->minor); dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); @@ -1086,9 +712,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) /* initialize our port settings */ /* 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); */ return 0; err: @@ -1115,17 +738,10 @@ err: static int mos7840_chars_in_buffer(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int i; int chars = 0; unsigned long flags; - struct moschip_port *mos7840_port; - - if (mos7840_port_paranoia_check(port, __func__)) - return 0; - - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return 0; spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { @@ -1147,25 +763,10 @@ static int mos7840_chars_in_buffer(struct tty_struct *tty) static void mos7840_close(struct usb_serial_port *port) { - struct usb_serial *serial; - struct moschip_port *mos7840_port; - struct moschip_port *port0; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int j; __u16 Data; - if (mos7840_port_paranoia_check(port, __func__)) - return; - - serial = mos7840_get_usb_serial(port, __func__); - if (!serial) - return; - - mos7840_port = mos7840_get_port_private(port); - port0 = mos7840_get_port_private(serial->port[0]); - - if (mos7840_port == NULL || port0 == NULL) - return; - for (j = 0; j < NUM_URBS; ++j) usb_kill_urb(mos7840_port->write_urb_pool[j]); @@ -1180,22 +781,11 @@ static void mos7840_close(struct usb_serial_port *port) usb_kill_urb(mos7840_port->read_urb); mos7840_port->read_urb_busy = false; - port0->open_ports--; - dev_dbg(&port->dev, "%s in close%d\n", __func__, port0->open_ports); - if (port0->open_ports == 0) { - if (serial->port[0]->interrupt_in_urb) { - dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); - usb_kill_urb(serial->port[0]->interrupt_in_urb); - } - } - Data = 0x0; mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); Data = 0x00; mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); - - mos7840_port->open = 0; } /***************************************************************************** @@ -1205,21 +795,8 @@ static void mos7840_close(struct usb_serial_port *port) static void mos7840_break(struct tty_struct *tty, int break_state) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); unsigned char data; - struct usb_serial *serial; - struct moschip_port *mos7840_port; - - if (mos7840_port_paranoia_check(port, __func__)) - return; - - serial = mos7840_get_usb_serial(port, __func__); - if (!serial) - return; - - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return; if (break_state == -1) data = mos7840_port->shadowLCR | LCR_SET_BREAK; @@ -1244,17 +821,10 @@ static void mos7840_break(struct tty_struct *tty, int break_state) static int mos7840_write_room(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int i; int room = 0; unsigned long flags; - struct moschip_port *mos7840_port; - - if (mos7840_port_paranoia_check(port, __func__)) - return -1; - - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return -1; spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { @@ -1280,29 +850,17 @@ static int mos7840_write_room(struct tty_struct *tty) static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count) { + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); + struct usb_serial *serial = port->serial; int status; int i; int bytes_sent = 0; int transfer_size; unsigned long flags; - - struct moschip_port *mos7840_port; - struct usb_serial *serial; struct urb *urb; /* __u16 Data; */ const unsigned char *current_position = data; - if (mos7840_port_paranoia_check(port, __func__)) - return -1; - - serial = port->serial; - if (mos7840_serial_paranoia_check(serial, __func__)) - return -1; - - mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) - return -1; - /* try to find a free urb in the list */ urb = NULL; @@ -1383,22 +941,9 @@ exit: static void mos7840_throttle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int status; - if (mos7840_port_paranoia_check(port, __func__)) - return; - - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return; - - if (!mos7840_port->open) { - dev_dbg(&port->dev, "%s", "port not opened\n"); - return; - } - /* if we are implementing XON/XOFF, send the stop character */ if (I_IXOFF(tty)) { unsigned char stop_char = STOP_CHAR(tty); @@ -1425,19 +970,8 @@ static void mos7840_throttle(struct tty_struct *tty) static void mos7840_unthrottle(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int status; - struct moschip_port *mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port_paranoia_check(port, __func__)) - return; - - if (mos7840_port == NULL) - return; - - if (!mos7840_port->open) { - dev_dbg(&port->dev, "%s - port not opened\n", __func__); - return; - } /* if we are implementing XON/XOFF, send the start character */ if (I_IXOFF(tty)) { @@ -1460,15 +994,10 @@ static void mos7840_unthrottle(struct tty_struct *tty) static int mos7840_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; unsigned int result; __u16 msr; __u16 mcr; int status; - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return -ENODEV; status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); if (status < 0) @@ -1493,15 +1022,10 @@ static int mos7840_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); unsigned int mcr; int status; - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return -ENODEV; - /* FIXME: What locks the port registers ? */ mcr = mos7840_port->shadowMCR; if (clear & TIOCM_RTS) @@ -1578,21 +1102,11 @@ static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, int baudRate) { + struct usb_serial_port *port = mos7840_port->port; int divisor = 0; int status; __u16 Data; __u16 clk_sel_val; - struct usb_serial_port *port; - - if (mos7840_port == NULL) - return -1; - - port = mos7840_port->port; - if (mos7840_port_paranoia_check(port, __func__)) - return -1; - - if (mos7840_serial_paranoia_check(port->serial, __func__)) - return -1; dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); /* reset clk_uart_sel in spregOffset */ @@ -1681,6 +1195,7 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, static void mos7840_change_port_settings(struct tty_struct *tty, struct moschip_port *mos7840_port, struct ktermios *old_termios) { + struct usb_serial_port *port = mos7840_port->port; int baud; unsigned cflag; __u8 lData; @@ -1688,23 +1203,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, __u8 lStop; int status; __u16 Data; - struct usb_serial_port *port; - - if (mos7840_port == NULL) - return; - - port = mos7840_port->port; - - if (mos7840_port_paranoia_check(port, __func__)) - return; - - if (mos7840_serial_paranoia_check(port->serial, __func__)) - return; - - if (!mos7840_port->open) { - dev_dbg(&port->dev, "%s - port not opened\n", __func__); - return; - } lData = LCR_BITS_8; lStop = LCR_STOP_1; @@ -1839,37 +1337,13 @@ static void mos7840_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); int status; - struct usb_serial *serial; - struct moschip_port *mos7840_port; - - if (mos7840_port_paranoia_check(port, __func__)) - return; - - serial = port->serial; - - if (mos7840_serial_paranoia_check(serial, __func__)) - return; - - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return; - - if (!mos7840_port->open) { - dev_dbg(&port->dev, "%s - port not opened\n", __func__); - return; - } /* change the port settings to the new ones specified */ mos7840_change_port_settings(tty, mos7840_port, old_termios); - if (!mos7840_port->read_urb) { - dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); - return; - } - if (!mos7840_port->read_urb_busy) { mos7840_port->read_urb_busy = true; status = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); @@ -1916,7 +1390,7 @@ static int mos7840_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) { struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port = mos7840_get_port_private(port); + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); ss->type = PORT_16550A; ss->line = mos7840_port->port->minor; @@ -1939,15 +1413,6 @@ static int mos7840_ioctl(struct tty_struct *tty, { struct usb_serial_port *port = tty->driver_data; void __user *argp = (void __user *)arg; - struct moschip_port *mos7840_port; - - if (mos7840_port_paranoia_check(port, __func__)) - return -1; - - mos7840_port = mos7840_get_port_private(port); - - if (mos7840_port == NULL) - return -1; switch (cmd) { /* return number of bytes available */ @@ -1962,6 +1427,13 @@ static int mos7840_ioctl(struct tty_struct *tty, return -ENOIOCTLCMD; } +/* + * Check if GPO (pin 42) is connected to GPI (pin 33) as recommended by ASIX + * for MCS7810 by bit-banging a 16-bit word. + * + * Note that GPO is really RTS of the third port so this will toggle RTS of + * port two or three on two- and four-port devices. + */ static int mos7810_check(struct usb_serial *serial) { int i, pass_count = 0; @@ -2019,16 +1491,12 @@ static int mos7810_check(struct usb_serial *serial) static int mos7840_probe(struct usb_serial *serial, const struct usb_device_id *id) { - u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); + unsigned long device_flags = id->driver_info; u8 *buf; - int device_type; - if (product == MOSCHIP_DEVICE_ID_7810 || - product == MOSCHIP_DEVICE_ID_7820 || - product == MOSCHIP_DEVICE_ID_7843) { - device_type = product; + /* Skip device-type detection if we already have device flags. */ + if (device_flags) goto out; - } buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); if (!buf) @@ -2040,15 +1508,15 @@ static int mos7840_probe(struct usb_serial *serial, /* For a MCS7840 device GPIO0 must be set to 1 */ if (buf[0] & 0x01) - device_type = MOSCHIP_DEVICE_ID_7840; + device_flags = MCS_PORTS(4); else if (mos7810_check(serial)) - device_type = MOSCHIP_DEVICE_ID_7810; + device_flags = MCS_PORTS(1) | MCS_LED; else - device_type = MOSCHIP_DEVICE_ID_7820; + device_flags = MCS_PORTS(2); kfree(buf); out: - usb_set_serial_data(serial, (void *)(unsigned long)device_type); + usb_set_serial_data(serial, (void *)device_flags); return 0; } @@ -2056,19 +1524,10 @@ out: static int mos7840_calc_num_ports(struct usb_serial *serial, struct usb_serial_endpoints *epds) { - int device_type = (unsigned long)usb_get_serial_data(serial); - int num_ports; + unsigned long device_flags = (unsigned long)usb_get_serial_data(serial); + int num_ports = MCS_PORTS(device_flags); - if (device_type == MOSCHIP_DEVICE_ID_7843) - num_ports = 3; - else - num_ports = (device_type >> 4) & 0x000F; - - /* - * num_ports is currently never zero as device_type is one of - * MOSCHIP_DEVICE_ID_78{1,2,4}0. - */ - if (num_ports == 0) + if (num_ports == 0 || num_ports > 4) return -ENODEV; if (epds->num_bulk_in < num_ports || epds->num_bulk_out < num_ports) { @@ -2079,10 +1538,27 @@ static int mos7840_calc_num_ports(struct usb_serial *serial, return num_ports; } +static int mos7840_attach(struct usb_serial *serial) +{ + struct device *dev = &serial->interface->dev; + int status; + u16 val; + + /* Zero Length flag enable */ + val = 0x0f; + status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, val); + if (status < 0) + dev_dbg(dev, "Writing ZLP_REG5 failed status-0x%x\n", status); + else + dev_dbg(dev, "ZLP_REG5 Writing success status%d\n", status); + + return status; +} + static int mos7840_port_probe(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; - int device_type = (unsigned long)usb_get_serial_data(serial); + unsigned long device_flags = (unsigned long)usb_get_serial_data(serial); struct moschip_port *mos7840_port; int status; int pnum; @@ -2103,7 +1579,6 @@ static int mos7840_port_probe(struct usb_serial_port *port) * common to all port */ mos7840_port->port = port; - mos7840_set_port_private(port, mos7840_port); spin_lock_init(&mos7840_port->pool_lock); /* minor is not initialised until later by @@ -2129,14 +1604,14 @@ static int mos7840_port_probe(struct usb_serial_port *port) mos7840_port->DcrRegOffset = 0x16 + 3 * (phy_num - 2); } mos7840_dump_serial_port(port, mos7840_port); - mos7840_set_port_private(port, mos7840_port); + usb_set_serial_port_data(port, mos7840_port); /* enable rx_disable bit in control register */ status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); if (status < 0) { dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status); - goto out; + goto error; } else dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); Data |= 0x08; /* setting driver done bit */ @@ -2148,7 +1623,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) mos7840_port->ControlRegOffset, Data); if (status < 0) { dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); - goto out; + goto error; } else dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); @@ -2159,7 +1634,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) (__u16) (mos7840_port->DcrRegOffset + 0), Data); if (status < 0) { dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); - goto out; + goto error; } else dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); @@ -2168,7 +1643,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) (__u16) (mos7840_port->DcrRegOffset + 1), Data); if (status < 0) { dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); - goto out; + goto error; } else dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); @@ -2177,7 +1652,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) (__u16) (mos7840_port->DcrRegOffset + 2), Data); if (status < 0) { dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); - goto out; + goto error; } else dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); @@ -2186,7 +1661,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data); if (status < 0) { dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); - goto out; + goto error; } else dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); @@ -2203,7 +1678,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); if (status < 0) { dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); - goto out; + goto error; } else dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); @@ -2217,7 +1692,7 @@ static int mos7840_port_probe(struct usb_serial_port *port) (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); if (status < 0) { dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); - goto out; + goto error; } else dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); } else { @@ -2229,27 +1704,16 @@ static int mos7840_port_probe(struct usb_serial_port *port) (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); if (status < 0) { dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); - goto out; + goto error; } else dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); } - 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) { - status = -ENOMEM; - goto error; - } - mos7840_port->has_led = false; + mos7840_port->has_led = device_flags & MCS_LED; /* Initialize LED timers */ - if (device_type == MOSCHIP_DEVICE_ID_7810) { - mos7840_port->has_led = true; - + if (mos7840_port->has_led) { mos7840_port->led_urb = usb_alloc_urb(0, GFP_KERNEL); mos7840_port->led_dr = kmalloc(sizeof(*mos7840_port->led_dr), GFP_KERNEL); @@ -2269,29 +1733,11 @@ static int mos7840_port_probe(struct usb_serial_port *port) /* Turn off LED */ mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); } -out: - if (pnum == serial->num_ports - 1) { - /* Zero Length flag enable */ - Data = 0x0f; - status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); - if (status < 0) { - dev_dbg(&port->dev, "Writing ZLP_REG5 failed status-0x%x\n", status); - goto error; - } else - dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); - /* setting configuration feature to one */ - usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - 0x03, 0x00, 0x01, 0x00, NULL, 0x00, - MOS_WDR_TIMEOUT); - } return 0; error: kfree(mos7840_port->led_dr); usb_free_urb(mos7840_port->led_urb); - kfree(mos7840_port->dr); - kfree(mos7840_port->ctrl_buf); - usb_free_urb(mos7840_port->control_urb); kfree(mos7840_port); return status; @@ -2299,9 +1745,7 @@ error: static int mos7840_port_remove(struct usb_serial_port *port) { - struct moschip_port *mos7840_port; - - mos7840_port = mos7840_get_port_private(port); + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); if (mos7840_port->has_led) { /* Turn off LED */ @@ -2314,10 +1758,7 @@ static int mos7840_port_remove(struct usb_serial_port *port) usb_free_urb(mos7840_port->led_urb); kfree(mos7840_port->led_dr); } - usb_kill_urb(mos7840_port->control_urb); - usb_free_urb(mos7840_port->control_urb); - kfree(mos7840_port->ctrl_buf); - kfree(mos7840_port->dr); + kfree(mos7840_port); return 0; @@ -2340,18 +1781,17 @@ static struct usb_serial_driver moschip7840_4port_device = { .unthrottle = mos7840_unthrottle, .calc_num_ports = mos7840_calc_num_ports, .probe = mos7840_probe, + .attach = mos7840_attach, .ioctl = mos7840_ioctl, .get_serial = mos7840_get_serial_info, .set_termios = mos7840_set_termios, .break_ctl = mos7840_break, .tiocmget = mos7840_tiocmget, .tiocmset = mos7840_tiocmset, - .tiocmiwait = usb_serial_generic_tiocmiwait, .get_icount = usb_serial_generic_get_icount, .port_probe = mos7840_port_probe, .port_remove = mos7840_port_remove, .read_bulk_callback = mos7840_bulk_in_callback, - .read_int_callback = mos7840_interrupt_callback, }; static struct usb_serial_driver * const serial_drivers[] = { |