diff options
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
| -rw-r--r-- | drivers/usb/serial/mos7840.c | 1642 |
1 files changed, 689 insertions, 953 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 5627993f9e4..393be562d87 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -24,7 +24,6 @@ #include <linux/kernel.h> #include <linux/errno.h> -#include <linux/init.h> #include <linux/slab.h> #include <linux/tty.h> #include <linux/tty_driver.h> @@ -35,10 +34,6 @@ #include <linux/usb/serial.h> #include <linux/uaccess.h> -/* - * Version Information - */ -#define DRIVER_VERSION "1.3.2" #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" /* @@ -82,8 +77,7 @@ * 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 MOS_WDR_TIMEOUT 5000 /* default urb timeout */ #define MOS_PORT1 0x0200 #define MOS_PORT2 0x0300 @@ -114,10 +108,10 @@ #define USB_VENDOR_ID_MOSCHIP 0x9710 #define MOSCHIP_DEVICE_ID_7840 0x7840 #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 moschip_port_id_table, and in - * moschip_id_table_combined + * by making a change here, in id_table. */ #define USB_VENDOR_ID_BANDB 0x0856 #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 @@ -174,6 +168,7 @@ #define CLK_MULTI_REGISTER ((__u16)(0x02)) #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) +#define GPIO_REGISTER ((__u16)(0x07)) #define SERIAL_LCR_DLAB ((__u16)(0x0080)) @@ -183,31 +178,19 @@ #define NUM_URBS 16 /* URB Count */ #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ +/* LED on/off milliseconds*/ +#define LED_ON_MS 500 +#define LED_OFF_MS 500 -static const struct usb_device_id moschip_port_id_table[] = { - {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, - {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, - {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)}, - {} /* terminating entry */ +enum mos7840_flag { + MOS7840_FLAG_CTRL_BUSY, + MOS7840_FLAG_LED_BUSY, }; -static const struct usb_device_id moschip_id_table_combined[] __devinitconst = { +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_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)}, @@ -225,8 +208,7 @@ static const struct usb_device_id moschip_id_table_combined[] __devinitconst = { {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, {} /* terminating entry */ }; - -MODULE_DEVICE_TABLE(usb, moschip_id_table_combined); +MODULE_DEVICE_TABLE(usb, id_table); /* This structure holds all of the local port information */ @@ -234,16 +216,10 @@ struct moschip_port { int port_num; /*Actual port number in the device(1,2,etc) */ struct urb *write_urb; /* write URB for this port */ struct urb *read_urb; /* read URB for this port */ - struct urb *int_urb; __u8 shadowLCR; /* last LCR value received */ __u8 shadowMCR; /* last MCR value received */ char open; char open_ports; - char zombie; - wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ - wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ - int delta_msr_cond; - struct async_icount icount; struct usb_serial_port *port; /* loop back to the owner of this object */ /* Offsets */ @@ -260,10 +236,16 @@ struct moschip_port { struct urb *write_urb_pool[NUM_URBS]; char busy[NUM_URBS]; bool read_urb_busy; -}; + /* For device(s) with LED indicator */ + bool has_led; + struct timer_list led_timer1; /* Timer for LED on */ + struct timer_list led_timer2; /* Timer for LED off */ + struct urb *led_urb; + struct usb_ctrlrequest *led_dr; -static int debug; + unsigned long flags; +}; /* * mos7840_set_reg_sync @@ -276,7 +258,7 @@ static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, { struct usb_device *dev = port->serial->dev; val = val & 0x00ff; - dbg("mos7840_set_reg_sync offset is %x, value %x", reg, val); + dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, val, reg, NULL, 0, @@ -304,7 +286,7 @@ static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); *val = buf[0]; - dbg("mos7840_get_reg_sync offset is %x, return val %x", reg, *val); + dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); kfree(buf); return ret; @@ -325,23 +307,15 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, /* 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; - dbg("mos7840_set_uart_reg application number is %x", val); + val |= ((__u16)port->port_number + 1) << 8; } else { - if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { - val |= (((__u16) port->number - - (__u16) (port->serial->minor)) + 1) << 8; - dbg("mos7840_set_uart_reg application number is %x", - val); + if (port->port_number == 0) { + val |= ((__u16)port->port_number + 1) << 8; } else { - val |= - (((__u16) port->number - - (__u16) (port->serial->minor)) + 2) << 8; - dbg("mos7840_set_uart_reg application number is %x", - val); + val |= ((__u16)port->port_number + 2) << 8; } } + dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, val, reg, NULL, 0, MOS_WDR_TIMEOUT); @@ -365,27 +339,17 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, if (!buf) return -ENOMEM; - /* dbg("application number is %4x", - (((__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)) + - 1) << 8; - dbg("mos7840_get_uart_reg application number is %x", Wval); + Wval = ((__u16)port->port_number + 1) << 8; } else { - if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { - Wval = (((__u16) port->number - - (__u16) (port->serial->minor)) + 1) << 8; - dbg("mos7840_get_uart_reg application number is %x", - Wval); + if (port->port_number == 0) { + Wval = ((__u16)port->port_number + 1) << 8; } else { - Wval = (((__u16) port->number - - (__u16) (port->serial->minor)) + 2) << 8; - dbg("mos7840_get_uart_reg application number is %x", - Wval); + Wval = ((__u16)port->port_number + 2) << 8; } } + dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); @@ -395,14 +359,13 @@ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, return ret; } -static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) +static void mos7840_dump_serial_port(struct usb_serial_port *port, + struct moschip_port *mos7840_port) { - dbg("***************************************"); - dbg("SpRegOffset is %2x", mos7840_port->SpRegOffset); - dbg("ControlRegOffset is %2x", mos7840_port->ControlRegOffset); - dbg("DCRRegOffset is %2x", mos7840_port->DcrRegOffset); - dbg("***************************************"); + dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); + dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); + dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); } @@ -431,29 +394,22 @@ 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; - icount = &mos7840_port->icount; if (new_msr & (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | MOS_MSR_DELTA_CD)) { - icount = &mos7840_port->icount; + icount = &mos7840_port->port->icount; /* update input line counters */ - if (new_msr & MOS_MSR_DELTA_CTS) { + if (new_msr & MOS_MSR_DELTA_CTS) icount->cts++; - smp_wmb(); - } - if (new_msr & MOS_MSR_DELTA_DSR) { + if (new_msr & MOS_MSR_DELTA_DSR) icount->dsr++; - smp_wmb(); - } - if (new_msr & MOS_MSR_DELTA_CD) { + if (new_msr & MOS_MSR_DELTA_CD) icount->dcd++; - smp_wmb(); - } - if (new_msr & MOS_MSR_DELTA_RI) { + if (new_msr & MOS_MSR_DELTA_RI) icount->rng++; - smp_wmb(); - } + + wake_up_interruptible(&port->port->port.delta_msr_wait); } } @@ -461,8 +417,6 @@ static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) { struct async_icount *icount; - dbg("%s - %02x", __func__, new_lsr); - if (new_lsr & SERIAL_LSR_BI) { /* * Parity and Framing errors only count if they @@ -473,23 +427,15 @@ static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) } /* update input line counters */ - icount = &port->icount; - if (new_lsr & SERIAL_LSR_BI) { + icount = &port->port->icount; + if (new_lsr & SERIAL_LSR_BI) icount->brk++; - smp_wmb(); - } - if (new_lsr & SERIAL_LSR_OE) { + if (new_lsr & SERIAL_LSR_OE) icount->overrun++; - smp_wmb(); - } - if (new_lsr & SERIAL_LSR_PE) { + if (new_lsr & SERIAL_LSR_PE) icount->parity++; - smp_wmb(); - } - if (new_lsr & SERIAL_LSR_FE) { + if (new_lsr & SERIAL_LSR_FE) icount->frame++; - smp_wmb(); - } } /************************************************************************/ @@ -503,8 +449,8 @@ 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 result = 0; int status = urb->status; mos7840_port = urb->context; @@ -517,36 +463,25 @@ static void mos7840_control_callback(struct urb *urb) case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", __func__, - status); - return; + dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); + goto out; default: - dbg("%s - nonzero urb status received: %d", __func__, - status); - goto exit; + dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); + goto out; } - dbg("%s urb buffer size is %d", __func__, urb->actual_length); - dbg("%s mos7840_port->MsrLsr is %d port %d", __func__, - mos7840_port->MsrLsr, mos7840_port->port_num); + dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); + 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]; - dbg("%s data is %x", __func__, regval); + 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); - -exit: - spin_lock(&mos7840_port->pool_lock); - if (!mos7840_port->zombie) - result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); - spin_unlock(&mos7840_port->pool_lock); - if (result) { - dev_err(&urb->dev->dev, - "%s - Error %d submitting interrupt urb\n", - __func__, result); - } +out: + clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mos7840_port->flags); } static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, @@ -557,6 +492,9 @@ static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, 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 */ @@ -568,9 +506,87 @@ static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, 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) { + 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: %d\n", + __func__, urb->status); + break; + default: + dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", + __func__, urb->status); + } +} + +static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, + __u16 reg) +{ + struct usb_device *dev = mcs->port->serial->dev; + struct usb_ctrlrequest *dr = mcs->led_dr; + + dr->bRequestType = MCS_WR_RTYPE; + dr->bRequest = MCS_WRREQ; + dr->wValue = cpu_to_le16(wval); + dr->wIndex = cpu_to_le16(reg); + dr->wLength = cpu_to_le16(0); + + usb_fill_control_urb(mcs->led_urb, dev, usb_sndctrlpipe(dev, 0), + (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); + + usb_submit_urb(mcs->led_urb, GFP_ATOMIC); +} + +static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, + __u16 val) +{ + struct usb_device *dev = port->serial->dev; + + usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, + val, reg, NULL, 0, MOS_WDR_TIMEOUT); +} + +static void mos7840_led_off(unsigned long arg) +{ + struct moschip_port *mcs = (struct moschip_port *) arg; + + /* Turn off LED */ + mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); + mod_timer(&mcs->led_timer2, + jiffies + msecs_to_jiffies(LED_OFF_MS)); +} + +static void mos7840_led_flag_off(unsigned long arg) +{ + struct moschip_port *mcs = (struct moschip_port *) arg; + + clear_bit_unlock(MOS7840_FLAG_LED_BUSY, &mcs->flags); +} + +static void mos7840_led_activity(struct usb_serial_port *port) +{ + struct moschip_port *mos7840_port = usb_get_serial_port_data(port); + + if (test_and_set_bit_lock(MOS7840_FLAG_LED_BUSY, &mos7840_port->flags)) + return; + + mos7840_set_led_async(mos7840_port, 0x0301, MODEM_CONTROL_REGISTER); + mod_timer(&mos7840_port->led_timer1, + jiffies + msecs_to_jiffies(LED_ON_MS)); +} + /***************************************************************************** * mos7840_interrupt_callback * this is the callback function for when we have received data on the @@ -590,8 +606,6 @@ static void mos7840_interrupt_callback(struct urb *urb) __u16 wval, wreg = 0; int status = urb->status; - dbg("%s", " : Entering"); - switch (status) { case 0: /* success */ @@ -600,12 +614,12 @@ static void mos7840_interrupt_callback(struct urb *urb) case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", __func__, - status); + dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", + __func__, status); return; default: - dbg("%s - nonzero urb status received: %d", __func__, - status); + dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", + __func__, status); goto exit; } @@ -622,7 +636,7 @@ static void mos7840_interrupt_callback(struct urb *urb) * Byte 5 FIFO status for both */ if (length && length > 5) { - dbg("%s", "Wrong data !!!"); + dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); return; } @@ -634,34 +648,25 @@ static void mos7840_interrupt_callback(struct urb *urb) for (i = 0; i < serial->num_ports; i++) { mos7840_port = mos7840_get_port_private(serial->port[i]); - wval = - (((__u16) serial->port[i]->number - - (__u16) (serial->minor)) + 1) << 8; + wval = ((__u16)serial->port[i]->port_number + 1) << 8; if (mos7840_port->open) { if (sp[i] & 0x01) { - dbg("SP%d No Interrupt !!!", i); + dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); } else { switch (sp[i] & 0x0f) { case SERIAL_IIR_RLS: - dbg("Serial Port %d: Receiver status error or ", i); - dbg("address bit detected in 9-bit mode"); + 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: - dbg("Serial Port %d: Modem status change", i); + dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); mos7840_port->MsrLsr = 0; wreg = MODEM_STATUS_REGISTER; break; } - spin_lock(&mos7840_port->pool_lock); - if (!mos7840_port->zombie) { - rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); - } else { - spin_unlock(&mos7840_port->pool_lock); - return; - } - spin_unlock(&mos7840_port->pool_lock); + rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); } } } @@ -681,11 +686,11 @@ static int mos7840_port_paranoia_check(struct usb_serial_port *port, const char *function) { if (!port) { - dbg("%s - port == NULL", function); + pr_debug("%s - port == NULL\n", function); return -1; } if (!port->serial) { - dbg("%s - port->serial == NULL", function); + pr_debug("%s - port->serial == NULL\n", function); return -1; } @@ -697,11 +702,11 @@ static int mos7840_serial_paranoia_check(struct usb_serial *serial, const char *function) { if (!serial) { - dbg("%s - serial == NULL", function); + pr_debug("%s - serial == NULL\n", function); return -1; } if (!serial->type) { - dbg("%s - serial->type == NULL!", function); + pr_debug("%s - serial->type == NULL!\n", function); return -1; } @@ -736,69 +741,55 @@ static void mos7840_bulk_in_callback(struct urb *urb) struct usb_serial *serial; struct usb_serial_port *port; struct moschip_port *mos7840_port; - struct tty_struct *tty; int status = urb->status; mos7840_port = urb->context; - if (!mos7840_port) { - dbg("%s", "NULL mos7840_port pointer"); + if (!mos7840_port) return; - } if (status) { - dbg("nonzero read bulk status received: %d", status); + dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); mos7840_port->read_urb_busy = false; return; } - port = (struct usb_serial_port *)mos7840_port->port; + port = mos7840_port->port; if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed"); mos7840_port->read_urb_busy = false; return; } serial = mos7840_get_usb_serial(port, __func__); if (!serial) { - dbg("%s", "Bad serial pointer"); mos7840_port->read_urb_busy = false; return; } - dbg("%s", "Entering... "); - data = urb->transfer_buffer; - - dbg("%s", "Entering ..........."); + usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); if (urb->actual_length) { - tty = tty_port_tty_get(&mos7840_port->port->port); - if (tty) { - tty_insert_flip_string(tty, data, urb->actual_length); - dbg(" %s ", data); - tty_flip_buffer_push(tty); - tty_kref_put(tty); - } - mos7840_port->icount.rx += urb->actual_length; - smp_wmb(); - dbg("mos7840_port->icount.rx is %d:", - mos7840_port->icount.rx); + struct tty_port *tport = &mos7840_port->port->port; + tty_insert_flip_string(tport, data, urb->actual_length); + tty_flip_buffer_push(tport); + port->icount.rx += urb->actual_length; + dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); } if (!mos7840_port->read_urb) { - dbg("%s", "URB KILLED !!!"); + dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); mos7840_port->read_urb_busy = false; return; } - - mos7840_port->read_urb->dev = serial->dev; + if (mos7840_port->has_led) + mos7840_led_activity(port); mos7840_port->read_urb_busy = true; retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); if (retval) { - dbg("usb_submit_urb(read bulk) failed, retval = %d", retval); + dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); mos7840_port->read_urb_busy = false; } } @@ -812,11 +803,12 @@ 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 tty_struct *tty; + struct usb_serial_port *port; int status = urb->status; int i; mos7840_port = urb->context; + port = mos7840_port->port; spin_lock(&mos7840_port->pool_lock); for (i = 0; i < NUM_URBS; i++) { if (urb == mos7840_port->write_urb_pool[i]) { @@ -827,39 +819,21 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) spin_unlock(&mos7840_port->pool_lock); if (status) { - dbg("nonzero write bulk status received:%d", status); + dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); return; } - if (mos7840_port_paranoia_check(mos7840_port->port, __func__)) { - dbg("%s", "Port Paranoia failed"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - dbg("%s", "Entering ........."); - - tty = tty_port_tty_get(&mos7840_port->port->port); - if (tty && mos7840_port->open) - tty_wakeup(tty); - tty_kref_put(tty); + if (mos7840_port->open) + tty_port_tty_wakeup(&port->port); } /************************************************************************/ /* D R I V E R T T Y I N T E R F A C E F U N C T I O N S */ /************************************************************************/ -#ifdef MCSSerialProbe -static int mos7840_serial_probe(struct usb_serial *serial, - const struct usb_device_id *id) -{ - - /*need to implement the mode_reg reading and updating\ - structures usb_serial_ device_type\ - (i.e num_ports, num_bulkin,bulkout etc) */ - /* Also we can update the changes attach */ - return 1; -} -#endif /***************************************************************************** * mos7840_open @@ -879,19 +853,13 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) struct moschip_port *mos7840_port; struct moschip_port *port0; - dbg ("%s enter", __func__); - - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed"); + if (mos7840_port_paranoia_check(port, __func__)) return -ENODEV; - } serial = port->serial; - if (mos7840_serial_paranoia_check(serial, __func__)) { - dbg("%s", "Serial Paranoia failed"); + if (mos7840_serial_paranoia_check(serial, __func__)) return -ENODEV; - } mos7840_port = mos7840_get_port_private(port); port0 = mos7840_get_port_private(serial->port[0]); @@ -907,20 +875,14 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) for (j = 0; j < NUM_URBS; ++j) { urb = usb_alloc_urb(0, GFP_KERNEL); mos7840_port->write_urb_pool[j] = urb; - - if (urb == NULL) { - dev_err(&port->dev, "No more urbs???\n"); + if (!urb) continue; - } 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; - dev_err(&port->dev, - "%s-out of memory for urb buffers.\n", - __func__); continue; } } @@ -942,21 +904,21 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) Data = 0x0; status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); if (status < 0) { - dbg("Reading Spreg failed"); - return -1; + dev_dbg(&port->dev, "Reading Spreg failed\n"); + goto err; } Data |= 0x80; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { - dbg("writing Spreg failed"); - return -1; + dev_dbg(&port->dev, "writing Spreg failed\n"); + goto err; } Data &= ~0x80; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { - dbg("writing Spreg failed"); - return -1; + dev_dbg(&port->dev, "writing Spreg failed\n"); + goto err; } /* End of block to be checked */ @@ -964,16 +926,16 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); if (status < 0) { - dbg("Reading Controlreg failed"); - return -1; + dev_dbg(&port->dev, "Reading Controlreg failed\n"); + goto err; } 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"); - return -1; + dev_dbg(&port->dev, "writing Controlreg failed\n"); + goto err; } /* do register settings here */ /* Set all regs to the device default values. */ @@ -983,22 +945,22 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) Data = 0x00; status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); if (status < 0) { - dbg("disabling interrupts failed"); - return -1; + dev_dbg(&port->dev, "disabling interrupts failed\n"); + goto err; } /* Set FIFO_CONTROL_REGISTER to the default value */ Data = 0x00; status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing FIFO_CONTROL_REGISTER failed"); - return -1; + dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); + goto err; } Data = 0xcf; status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing FIFO_CONTROL_REGISTER failed"); - return -1; + dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); + goto err; } Data = 0x03; @@ -1094,26 +1056,34 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) * (can't set it up in mos7840_startup as the * * structures were not set up at that time.) */ - dbg("port number is %d", port->number); - dbg("serial number is %d", port->serial->minor); - dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress); - dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress); - dbg("Interrupt endpoint is %d", port->interrupt_in_endpointAddress); - dbg("port's number in the device is %d", mos7840_port->port_num); + 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); + dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); + dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); + dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); mos7840_port->read_urb = port->read_urb; /* set up our bulk in urb */ + if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { + usb_fill_bulk_urb(mos7840_port->read_urb, + serial->dev, + usb_rcvbulkpipe(serial->dev, + (port->bulk_in_endpointAddress) + 2), + port->bulk_in_buffer, + mos7840_port->read_urb->transfer_buffer_length, + mos7840_bulk_in_callback, mos7840_port); + } else { + usb_fill_bulk_urb(mos7840_port->read_urb, + serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), + port->bulk_in_buffer, + mos7840_port->read_urb->transfer_buffer_length, + mos7840_bulk_in_callback, mos7840_port); + } - usb_fill_bulk_urb(mos7840_port->read_urb, - serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_in_endpointAddress), - port->bulk_in_buffer, - mos7840_port->read_urb->transfer_buffer_length, - mos7840_bulk_in_callback, mos7840_port); - - dbg("mos7840_open: bulkin endpoint is %d", - port->bulk_in_endpointAddress); + dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); mos7840_port->read_urb_busy = true; response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); if (response) { @@ -1122,29 +1092,23 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) mos7840_port->read_urb_busy = false; } - /* initialize our wait queues */ - init_waitqueue_head(&mos7840_port->wait_chase); - init_waitqueue_head(&mos7840_port->delta_msr_wait); - - /* initialize our icount structure */ - memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); - /* 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); */ - mos7840_port->icount.tx = 0; - mos7840_port->icount.rx = 0; - - dbg("usb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p", - serial, mos7840_port, port); - - dbg ("%s leave", __func__); return 0; - +err: + for (j = 0; j < NUM_URBS; ++j) { + urb = mos7840_port->write_urb_pool[j]; + if (!urb) + continue; + kfree(urb->transfer_buffer); + usb_free_urb(urb); + } + return status; } /***************************************************************************** @@ -1165,25 +1129,22 @@ static int mos7840_chars_in_buffer(struct tty_struct *tty) unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s", " mos7840_chars_in_buffer:entering ..........."); - - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); + if (mos7840_port_paranoia_check(port, __func__)) return 0; - } mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) { - dbg("%s", "mos7840_break:leaving ..........."); + if (mos7840_port == NULL) return 0; - } 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; + for (i = 0; i < NUM_URBS; ++i) { + if (mos7840_port->busy[i]) { + struct urb *urb = mos7840_port->write_urb_pool[i]; + chars += urb->transfer_buffer_length; + } + } spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); - dbg("%s - returns %d", __func__, chars); + dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); return chars; } @@ -1201,18 +1162,12 @@ static void mos7840_close(struct usb_serial_port *port) int j; __u16 Data; - dbg("%s", "mos7840_close:entering..."); - - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } serial = mos7840_get_usb_serial(port, __func__); - if (!serial) { - dbg("%s", "Serial Paranoia failed"); + if (!serial) return; - } mos7840_port = mos7840_get_port_private(port); port0 = mos7840_get_port_private(serial->port[0]); @@ -1234,39 +1189,22 @@ static void mos7840_close(struct usb_serial_port *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"); - usb_kill_urb(mos7840_port->write_urb); - } - if (mos7840_port->read_urb) { - dbg("%s", "Shutdown bulk read"); - usb_kill_urb(mos7840_port->read_urb); - mos7840_port->read_urb_busy = false; - } - if ((&mos7840_port->control_urb)) { - dbg("%s", "Shutdown control read"); - /*/ usb_kill_urb (mos7840_port->control_urb); */ - } - } -/* if(mos7840_port->ctrl_buf != NULL) */ -/* kfree(mos7840_port->ctrl_buf); */ + usb_kill_urb(mos7840_port->write_urb); + usb_kill_urb(mos7840_port->read_urb); + mos7840_port->read_urb_busy = false; + port0->open_ports--; - dbg("mos7840_num_open_ports in close%d:in port%d", - port0->open_ports, port->number); + 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) { - dbg("%s", "Shutdown interrupt_in_urb"); + dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); usb_kill_urb(serial->port[0]->interrupt_in_urb); } } 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) - kfree(mos7840_port->write_urb->transfer_buffer); + kfree(mos7840_port->write_urb->transfer_buffer); usb_free_urb(mos7840_port->write_urb); } @@ -1277,49 +1215,6 @@ static void mos7840_close(struct usb_serial_port *port) mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); mos7840_port->open = 0; - - dbg("%s", "Leaving ............"); -} - -/************************************************************************ - * - * mos7840_block_until_chase_response - * - * This function will block the close until one of the following: - * 1. Response to our Chase comes from mos7840 - * 2. A timeout of 10 seconds without activity has expired - * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) - * - ************************************************************************/ - -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(tty); - - /* Check for Buffer status */ - if (count <= 0) - return; - - /* Block the thread for a while */ - interruptible_sleep_on_timeout(&mos7840_port->wait_chase, - timeout); - /* No activity.. count down section */ - wait--; - if (wait == 0) { - dbg("%s - TIMEOUT", __func__); - return; - } else { - /* Reset timeout value back to seconds */ - wait = 10; - } - } - } /***************************************************************************** @@ -1333,29 +1228,18 @@ static void mos7840_break(struct tty_struct *tty, int break_state) struct usb_serial *serial; struct moschip_port *mos7840_port; - dbg("%s", "Entering ..........."); - dbg("mos7840_break: Start"); - - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } serial = mos7840_get_usb_serial(port, __func__); - if (!serial) { - dbg("%s", "Serial Paranoia failed"); + if (!serial) return; - } mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) return; - if (serial->dev) - /* flush and block until tx is empty */ - mos7840_block_until_chase_response(tty, mos7840_port); - if (break_state == -1) data = mos7840_port->shadowLCR | LCR_SET_BREAK; else @@ -1363,8 +1247,7 @@ static void mos7840_break(struct tty_struct *tty, int break_state) /* FIXME: no locking on shadowLCR anywhere in driver */ mos7840_port->shadowLCR = data; - dbg("mcs7840_break mos7840_port->shadowLCR is %x", - mos7840_port->shadowLCR); + dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, mos7840_port->shadowLCR); } @@ -1385,19 +1268,12 @@ static int mos7840_write_room(struct tty_struct *tty) unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s", " mos7840_write_room:entering ..........."); - - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); - dbg("%s", " mos7840_write_room:leaving ..........."); + if (mos7840_port_paranoia_check(port, __func__)) return -1; - } mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) { - dbg("%s", "mos7840_break:leaving ..........."); + if (mos7840_port == NULL) return -1; - } spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { @@ -1407,7 +1283,7 @@ static int mos7840_write_room(struct tty_struct *tty) spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; - dbg("%s - returns %d", __func__, room); + dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); return room; } @@ -1435,17 +1311,13 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, /* __u16 Data; */ const unsigned char *current_position = data; unsigned char *data1; - dbg("%s", "entering ..........."); - /* dbg("mos7840_write: mos7840_port->shadowLCR is %x", - mos7840_port->shadowLCR); */ #ifdef NOTMOS7840 Data = 0x00; status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); mos7840_port->shadowLCR = Data; - dbg("mos7840_write: LINE_CONTROL_REGISTER is %x", Data); - dbg("mos7840_write: mos7840_port->shadowLCR is %x", - mos7840_port->shadowLCR); + dev_dbg(&port->dev, "%s: LINE_CONTROL_REGISTER is %x\n", __func__, Data); + dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); /* Data = 0x03; */ /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ @@ -1458,34 +1330,27 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ Data = 0x00; status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); - dbg("mos7840_write:DLL value is %x", Data); + dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data); Data = 0x0; status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); - dbg("mos7840_write:DLM value is %x", Data); + dev_dbg(&port->dev, "%s: DLM value is %x\n", __func__, Data); Data = Data & ~SERIAL_LCR_DLAB; - dbg("mos7840_write: mos7840_port->shadowLCR is %x", - mos7840_port->shadowLCR); + dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); #endif - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Port Paranoia failed"); + if (mos7840_port_paranoia_check(port, __func__)) return -1; - } serial = port->serial; - if (mos7840_serial_paranoia_check(serial, __func__)) { - dbg("%s", "Serial Paranoia failed"); + if (mos7840_serial_paranoia_check(serial, __func__)) return -1; - } mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) { - dbg("%s", "mos7840_port is NULL"); + if (mos7840_port == NULL) return -1; - } /* try to find a free urb in the list */ urb = NULL; @@ -1495,57 +1360,65 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, if (!mos7840_port->busy[i]) { mos7840_port->busy[i] = 1; urb = mos7840_port->write_urb_pool[i]; - dbg("URB:%d", i); + dev_dbg(&port->dev, "URB:%d\n", i); break; } } spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); if (urb == NULL) { - dbg("%s - no more free urbs", __func__); + dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); goto exit; } if (urb->transfer_buffer == NULL) { urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); - - if (urb->transfer_buffer == NULL) { - dev_err(&port->dev, "%s no more kernel memory...\n", - __func__); + if (!urb->transfer_buffer) goto exit; - } } transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); memcpy(urb->transfer_buffer, current_position, transfer_size); /* fill urb with data and submit */ - usb_fill_bulk_urb(urb, - serial->dev, - usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - urb->transfer_buffer, - transfer_size, - mos7840_bulk_out_data_callback, mos7840_port); + if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { + usb_fill_bulk_urb(urb, + serial->dev, + usb_sndbulkpipe(serial->dev, + (port->bulk_out_endpointAddress) + 2), + urb->transfer_buffer, + transfer_size, + mos7840_bulk_out_data_callback, mos7840_port); + } else { + usb_fill_bulk_urb(urb, + serial->dev, + usb_sndbulkpipe(serial->dev, + port->bulk_out_endpointAddress), + urb->transfer_buffer, + transfer_size, + mos7840_bulk_out_data_callback, mos7840_port); + } data1 = urb->transfer_buffer; - dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress); + dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); + + if (mos7840_port->has_led) + mos7840_led_activity(port); /* send it down the pipe */ status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { mos7840_port->busy[i] = 0; - dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " + dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " "with status = %d\n", __func__, status); bytes_sent = status; goto exit; } bytes_sent = transfer_size; - mos7840_port->icount.tx += transfer_size; - smp_wmb(); - dbg("mos7840_port->icount.tx is %d:", mos7840_port->icount.tx); + port->icount.tx += transfer_size; + dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); exit: return bytes_sent; @@ -1563,12 +1436,8 @@ static void mos7840_throttle(struct tty_struct *tty) struct moschip_port *mos7840_port; int status; - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - - dbg("- port %d", port->number); mos7840_port = mos7840_get_port_private(port); @@ -1576,12 +1445,10 @@ static void mos7840_throttle(struct tty_struct *tty) return; if (!mos7840_port->open) { - dbg("%s", "port not opened"); + dev_dbg(&port->dev, "%s", "port not opened\n"); return; } - dbg("%s", "Entering .........."); - /* if we are implementing XON/XOFF, send the stop character */ if (I_IXOFF(tty)) { unsigned char stop_char = STOP_CHAR(tty); @@ -1590,7 +1457,7 @@ static void mos7840_throttle(struct tty_struct *tty) return; } /* if we are implementing RTS/CTS, toggle that line */ - if (tty->termios->c_cflag & CRTSCTS) { + if (tty->termios.c_cflag & CRTSCTS) { mos7840_port->shadowMCR &= ~MCR_RTS; status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mos7840_port->shadowMCR); @@ -1611,21 +1478,17 @@ static void mos7840_unthrottle(struct tty_struct *tty) int status; struct moschip_port *mos7840_port = mos7840_get_port_private(port); - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } if (mos7840_port == NULL) return; if (!mos7840_port->open) { - dbg("%s - port not opened", __func__); + dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; } - dbg("%s", "Entering .........."); - /* if we are implementing XON/XOFF, send the start character */ if (I_IXOFF(tty)) { unsigned char start_char = START_CHAR(tty); @@ -1635,7 +1498,7 @@ static void mos7840_unthrottle(struct tty_struct *tty) } /* if we are implementing RTS/CTS, toggle that line */ - if (tty->termios->c_cflag & CRTSCTS) { + if (tty->termios.c_cflag & CRTSCTS) { mos7840_port->shadowMCR |= MCR_RTS; status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mos7840_port->shadowMCR); @@ -1644,7 +1507,7 @@ static void mos7840_unthrottle(struct tty_struct *tty) } } -static int mos7840_tiocmget(struct tty_struct *tty, struct file *file) +static int mos7840_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7840_port; @@ -1654,13 +1517,15 @@ static int mos7840_tiocmget(struct tty_struct *tty, struct file *file) int status; mos7840_port = mos7840_get_port_private(port); - dbg("%s - port %d", __func__, port->number); - if (mos7840_port == NULL) return -ENODEV; status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); + if (status != 1) + return -EIO; status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); + if (status != 1) + return -EIO; result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) @@ -1669,12 +1534,12 @@ static int mos7840_tiocmget(struct tty_struct *tty, struct file *file) | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); - dbg("%s - 0x%04X", __func__, result); + dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); return result; } -static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, +static int mos7840_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; @@ -1682,8 +1547,6 @@ static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, unsigned int mcr; int status; - dbg("%s - port %d", __func__, port->number); - mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) @@ -1709,7 +1572,7 @@ static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); if (status < 0) { - dbg("setting MODEM_CONTROL_REGISTER Failed"); + dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); return status; } @@ -1721,11 +1584,11 @@ static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, * this function calculates the proper baud rate divisor for the specified * baud rate. *****************************************************************************/ -static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, +static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, + int baudRate, int *divisor, __u16 *clk_sel_val) { - - dbg("%s - %d", __func__, baudRate); + dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); if (baudRate <= 115200) { *divisor = 115200 / baudRate; @@ -1778,11 +1641,11 @@ static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, custom++; *divisor = custom; - dbg(" Baud %d = %d", baudrate, custom); + dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom); return 0; } - dbg("%s", " Baud calculation Failed..."); + dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n"); return -1; #endif } @@ -1806,23 +1669,16 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, if (mos7840_port == NULL) return -1; - port = (struct usb_serial_port *)mos7840_port->port; - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); + port = mos7840_port->port; + if (mos7840_port_paranoia_check(port, __func__)) return -1; - } - if (mos7840_serial_paranoia_check(port->serial, __func__)) { - dbg("%s", "Invalid Serial"); + if (mos7840_serial_paranoia_check(port->serial, __func__)) return -1; - } - - dbg("%s", "Entering .........."); - number = mos7840_port->port->number - mos7840_port->port->serial->minor; + number = mos7840_port->port->port_number; - dbg("%s - port = %d, baud = %d", __func__, - mos7840_port->port->number, baudRate); + dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); /* reset clk_uart_sel in spregOffset */ if (baudRate > 115200) { #ifdef HW_flow_control @@ -1833,20 +1689,20 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud"); + dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); return -1; } #endif } else { #ifdef HW_flow_control - / *setting h/w flow control bit to 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); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud"); + dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); return -1; } #endif @@ -1856,19 +1712,19 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, if (1) { /* baudRate <= 115200) */ clk_sel_val = 0x0; Data = 0x0; - status = mos7840_calc_baud_rate_divisor(baudRate, &divisor, + status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, &clk_sel_val); status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); if (status < 0) { - dbg("reading spreg failed in set_serial_baud"); + dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); return -1; } Data = (Data & 0x8f) | clk_sel_val; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud"); + dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); return -1; } /* Calculate the Divisor */ @@ -1884,11 +1740,11 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, /* Write the divisor */ Data = (unsigned char)(divisor & 0xff); - dbg("set_serial_baud Value to write DLL is %x", Data); + dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); Data = (unsigned char)((divisor & 0xff00) >> 8); - dbg("set_serial_baud Value to write DLM is %x", Data); + dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); /* Disable access to divisor latch */ @@ -1923,68 +1779,60 @@ static void mos7840_change_port_settings(struct tty_struct *tty, if (mos7840_port == NULL) return; - port = (struct usb_serial_port *)mos7840_port->port; + port = mos7840_port->port; - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - if (mos7840_serial_paranoia_check(port->serial, __func__)) { - dbg("%s", "Invalid Serial"); + if (mos7840_serial_paranoia_check(port->serial, __func__)) return; - } serial = port->serial; - dbg("%s - port %d", __func__, mos7840_port->port->number); - if (!mos7840_port->open) { - dbg("%s - port not opened", __func__); + dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; } - dbg("%s", "Entering .........."); - lData = LCR_BITS_8; lStop = LCR_STOP_1; lParity = LCR_PAR_NONE; - cflag = tty->termios->c_cflag; - iflag = tty->termios->c_iflag; + cflag = tty->termios.c_cflag; + iflag = tty->termios.c_iflag; /* Change the number of bits */ - if (cflag & CSIZE) { - switch (cflag & CSIZE) { - case CS5: - lData = LCR_BITS_5; - break; + switch (cflag & CSIZE) { + case CS5: + lData = LCR_BITS_5; + break; - case CS6: - lData = LCR_BITS_6; - break; + case CS6: + lData = LCR_BITS_6; + break; - case CS7: - lData = LCR_BITS_7; - break; - default: - case CS8: - lData = LCR_BITS_8; - break; - } + case CS7: + lData = LCR_BITS_7; + break; + + default: + case CS8: + lData = LCR_BITS_8; + break; } + /* Change the Parity bit */ if (cflag & PARENB) { if (cflag & PARODD) { lParity = LCR_PAR_ODD; - dbg("%s - parity = odd", __func__); + dev_dbg(&port->dev, "%s - parity = odd\n", __func__); } else { lParity = LCR_PAR_EVEN; - dbg("%s - parity = even", __func__); + dev_dbg(&port->dev, "%s - parity = even\n", __func__); } } else { - dbg("%s - parity = none", __func__); + dev_dbg(&port->dev, "%s - parity = none\n", __func__); } if (cflag & CMSPAR) @@ -1993,10 +1841,10 @@ static void mos7840_change_port_settings(struct tty_struct *tty, /* Change the Stop bit */ if (cflag & CSTOPB) { lStop = LCR_STOP_2; - dbg("%s - stop bits = 2", __func__); + dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); } else { lStop = LCR_STOP_1; - dbg("%s - stop bits = 1", __func__); + dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); } /* Update the LCR with the correct value */ @@ -2004,8 +1852,8 @@ static void mos7840_change_port_settings(struct tty_struct *tty, ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); mos7840_port->shadowLCR |= (lData | lParity | lStop); - dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x", - mos7840_port->shadowLCR); + dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, + mos7840_port->shadowLCR); /* Disable Interrupts */ Data = 0x00; mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); @@ -2046,11 +1894,11 @@ static void mos7840_change_port_settings(struct tty_struct *tty, if (!baud) { /* pick a default, any default... */ - dbg("%s", "Picked default baud..."); + dev_dbg(&port->dev, "%s", "Picked default baud...\n"); baud = 9600; } - dbg("%s - baud rate = %d", __func__, baud); + dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); /* Enable Interrupts */ @@ -2058,19 +1906,16 @@ static void mos7840_change_port_settings(struct tty_struct *tty, mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); if (mos7840_port->read_urb_busy == false) { - mos7840_port->read_urb->dev = serial->dev; mos7840_port->read_urb_busy = true; status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); if (status) { - dbg("usb_submit_urb(read bulk) failed, status = %d", + dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", status); mos7840_port->read_urb_busy = false; } } - wake_up(&mos7840_port->delta_msr_wait); - mos7840_port->delta_msr_cond = 1; - dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x", - mos7840_port->shadowLCR); + dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, + mos7840_port->shadowLCR); } /***************************************************************************** @@ -2087,18 +1932,14 @@ static void mos7840_set_termios(struct tty_struct *tty, unsigned int cflag; struct usb_serial *serial; struct moschip_port *mos7840_port; - dbg("mos7840_set_termios: START"); - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); + + if (mos7840_port_paranoia_check(port, __func__)) return; - } serial = port->serial; - if (mos7840_serial_paranoia_check(serial, __func__)) { - dbg("%s", "Invalid Serial"); + if (mos7840_serial_paranoia_check(serial, __func__)) return; - } mos7840_port = mos7840_get_port_private(port); @@ -2106,35 +1947,33 @@ static void mos7840_set_termios(struct tty_struct *tty, return; if (!mos7840_port->open) { - dbg("%s - port not opened", __func__); + dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; } - dbg("%s", "setting termios - "); + dev_dbg(&port->dev, "%s", "setting termios - \n"); - cflag = tty->termios->c_cflag; + cflag = tty->termios.c_cflag; - dbg("%s - clfag %08x iflag %08x", __func__, - tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); - dbg("%s - old clfag %08x old iflag %08x", __func__, - old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); - dbg("%s - port %d", __func__, port->number); + dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, + tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); + dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, + old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); /* change the port settings to the new ones specified */ mos7840_change_port_settings(tty, mos7840_port, old_termios); if (!mos7840_port->read_urb) { - dbg("%s", "URB KILLED !!!!!"); + dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); return; } if (mos7840_port->read_urb_busy == false) { - mos7840_port->read_urb->dev = serial->dev; mos7840_port->read_urb_busy = true; status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); if (status) { - dbg("usb_submit_urb(read bulk) failed, status = %d", + dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", status); mos7840_port->read_urb_busy = false; } @@ -2159,10 +1998,8 @@ static int mos7840_get_lsr_info(struct tty_struct *tty, unsigned int result = 0; count = mos7840_chars_in_buffer(tty); - if (count == 0) { - dbg("%s -- Empty", __func__); + if (count == 0) result = TIOCSER_TEMT; - } if (copy_to_user(value, &result, sizeof(int))) return -EFAULT; @@ -2188,8 +2025,8 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port, memset(&tmp, 0, sizeof(tmp)); tmp.type = PORT_16550A; - tmp.line = mos7840_port->port->serial->minor; - tmp.port = mos7840_port->port->number; + tmp.line = mos7840_port->port->minor; + tmp.port = mos7840_port->port->port_number; tmp.irq = 0; tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; @@ -2202,458 +2039,407 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port, return 0; } -static int mos7840_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) -{ - struct usb_serial_port *port = tty->driver_data; - struct moschip_port *mos7840_port; - struct async_icount cnow; - - mos7840_port = mos7840_get_port_private(port); - cnow = mos7840_port->icount; - - smp_rmb(); - icount->cts = cnow.cts; - icount->dsr = cnow.dsr; - icount->rng = cnow.rng; - icount->dcd = cnow.dcd; - icount->rx = cnow.rx; - icount->tx = cnow.tx; - icount->frame = cnow.frame; - icount->overrun = cnow.overrun; - icount->parity = cnow.parity; - icount->brk = cnow.brk; - icount->buf_overrun = cnow.buf_overrun; - - dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, - port->number, icount->rx, icount->tx); - return 0; -} - /***************************************************************************** * SerialIoctl * this function handles any ioctl calls to the driver *****************************************************************************/ -static int mos7840_ioctl(struct tty_struct *tty, struct file *file, +static int mos7840_ioctl(struct tty_struct *tty, 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 async_icount cnow; - struct async_icount cprev; - - if (mos7840_port_paranoia_check(port, __func__)) { - dbg("%s", "Invalid port"); + if (mos7840_port_paranoia_check(port, __func__)) return -1; - } mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) return -1; - dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); - switch (cmd) { /* return number of bytes available */ case TIOCSERGETLSR: - dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); + dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); return mos7840_get_lsr_info(tty, argp); - return 0; case TIOCGSERIAL: - dbg("%s (%d) TIOCGSERIAL", __func__, port->number); + dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); return mos7840_get_serial_info(mos7840_port, argp); case TIOCSSERIAL: - dbg("%s (%d) TIOCSSERIAL", __func__, port->number); + dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); break; - - case TIOCMIWAIT: - dbg("%s (%d) TIOCMIWAIT", __func__, port->number); - cprev = mos7840_port->icount; - while (1) { - /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ - mos7840_port->delta_msr_cond = 0; - wait_event_interruptible(mos7840_port->delta_msr_wait, - (mos7840_port-> - delta_msr_cond == 1)); - - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - cnow = mos7840_port->icount; - smp_rmb(); - if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && - cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) - return -EIO; /* no change => error */ - if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { - return 0; - } - cprev = cnow; - } - /* NOTREACHED */ - break; - default: break; } return -ENOIOCTLCMD; } +static int mos7810_check(struct usb_serial *serial) +{ + int i, pass_count = 0; + u8 *buf; + __u16 data = 0, mcr_data = 0; + __u16 test_pattern = 0x55AA; + int res; + + buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (!buf) + return 0; /* failed to identify 7810 */ + + /* Store MCR setting */ + res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, + buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + if (res == VENDOR_READ_LENGTH) + mcr_data = *buf; + + for (i = 0; i < 16; i++) { + /* Send the 1-bit test pattern out to MCS7810 test pin */ + usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + MCS_WRREQ, MCS_WR_RTYPE, + (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), + MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); + + /* Read the test pattern back */ + res = usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, + MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, + VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + if (res == VENDOR_READ_LENGTH) + data = *buf; + + /* If this is a MCS7810 device, both test patterns must match */ + if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) + break; + + pass_count++; + } + + /* Restore MCR setting */ + usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, + MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, + 0, MOS_WDR_TIMEOUT); + + kfree(buf); + + if (pass_count == 16) + return 1; + + return 0; +} + +static int mos7840_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); + u8 *buf; + int device_type; + + if (product == MOSCHIP_DEVICE_ID_7810 || + product == MOSCHIP_DEVICE_ID_7820) { + device_type = product; + goto out; + } + + buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, + VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); + + /* For a MCS7840 device GPIO0 must be set to 1 */ + if (buf[0] & 0x01) + device_type = MOSCHIP_DEVICE_ID_7840; + else if (mos7810_check(serial)) + device_type = MOSCHIP_DEVICE_ID_7810; + else + device_type = MOSCHIP_DEVICE_ID_7820; + + kfree(buf); +out: + usb_set_serial_data(serial, (void *)(unsigned long)device_type); + + return 0; +} + static int mos7840_calc_num_ports(struct usb_serial *serial) { - int mos7840_num_ports = 0; - - dbg("numberofendpoints: cur %d, alt %d", - (int)serial->interface->cur_altsetting->desc.bNumEndpoints, - (int)serial->interface->altsetting->desc.bNumEndpoints); - if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) { - mos7840_num_ports = serial->num_ports = 2; - } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) { - serial->num_bulk_in = 4; - serial->num_bulk_out = 4; - mos7840_num_ports = serial->num_ports = 4; - } - dbg ("mos7840_num_ports = %d", mos7840_num_ports); + int device_type = (unsigned long)usb_get_serial_data(serial); + int mos7840_num_ports; + + mos7840_num_ports = (device_type >> 4) & 0x000F; + return mos7840_num_ports; } -/**************************************************************************** - * mos7840_startup - ****************************************************************************/ - -static int mos7840_startup(struct usb_serial *serial) +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); struct moschip_port *mos7840_port; - struct usb_device *dev; - int i, status; - + int status; + int pnum; __u16 Data; - dbg("%s", "mos7840_startup :Entering.........."); - if (!serial) { - dbg("%s", "Invalid Handler"); - return -1; - } + /* we set up the pointers to the endpoints in the mos7840_open * + * function, as the structures aren't created yet. */ - dev = serial->dev; + pnum = port->port_number; - dbg("%s", "Entering..."); - dbg ("mos7840_startup: serial = %p", serial); + dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); + mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); + if (!mos7840_port) + return -ENOMEM; - /* we set up the pointers to the endpoints in the mos7840_open * - * function, as the structures aren't created yet. */ + /* 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 = port; + mos7840_set_port_private(port, mos7840_port); + spin_lock_init(&mos7840_port->pool_lock); + + /* minor is not initialised until later by + * usb-serial.c:get_free_serial() and cannot therefore be used + * to index device instances */ + mos7840_port->port_num = pnum + 1; + dev_dbg(&port->dev, "port->minor = %d\n", port->minor); + dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); + + if (mos7840_port->port_num == 1) { + mos7840_port->SpRegOffset = 0x0; + mos7840_port->ControlRegOffset = 0x1; + mos7840_port->DcrRegOffset = 0x4; + } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) { + mos7840_port->SpRegOffset = 0x8; + mos7840_port->ControlRegOffset = 0x9; + mos7840_port->DcrRegOffset = 0x16; + } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) { + mos7840_port->SpRegOffset = 0xa; + mos7840_port->ControlRegOffset = 0xb; + mos7840_port->DcrRegOffset = 0x19; + } else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) { + mos7840_port->SpRegOffset = 0xa; + mos7840_port->ControlRegOffset = 0xb; + mos7840_port->DcrRegOffset = 0x19; + } else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) { + mos7840_port->SpRegOffset = 0xc; + mos7840_port->ControlRegOffset = 0xd; + mos7840_port->DcrRegOffset = 0x1c; + } + mos7840_dump_serial_port(port, mos7840_port); + mos7840_set_port_private(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; + } else + dev_dbg(&port->dev, "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 */ - /* set up port private structures */ - for (i = 0; i < serial->num_ports; ++i) { - dbg ("mos7840_startup: configuring port %d............", i); - mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); - if (mos7840_port == NULL) { - dev_err(&dev->dev, "%s - Out of memory\n", __func__); - status = -ENOMEM; - i--; /* don't follow NULL pointer cleaning up */ - goto error; - } + /* Data |= 0x20; //rx_disable bit */ + status = mos7840_set_reg_sync(port, + mos7840_port->ControlRegOffset, Data); + if (status < 0) { + dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); + goto out; + } else + dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); - /* 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); - spin_lock_init(&mos7840_port->pool_lock); - - /* minor is not initialised until later by - * usb-serial.c:get_free_serial() and cannot therefore be used - * to index device instances */ - mos7840_port->port_num = i + 1; - dbg ("serial->port[i]->number = %d", serial->port[i]->number); - dbg ("serial->port[i]->serial->minor = %d", serial->port[i]->serial->minor); - dbg ("mos7840_port->port_num = %d", mos7840_port->port_num); - dbg ("serial->minor = %d", serial->minor); - - if (mos7840_port->port_num == 1) { - mos7840_port->SpRegOffset = 0x0; - mos7840_port->ControlRegOffset = 0x1; - mos7840_port->DcrRegOffset = 0x4; - } else if ((mos7840_port->port_num == 2) - && (serial->num_ports == 4)) { - mos7840_port->SpRegOffset = 0x8; - mos7840_port->ControlRegOffset = 0x9; - mos7840_port->DcrRegOffset = 0x16; - } else if ((mos7840_port->port_num == 2) - && (serial->num_ports == 2)) { - mos7840_port->SpRegOffset = 0xa; - mos7840_port->ControlRegOffset = 0xb; - mos7840_port->DcrRegOffset = 0x19; - } else if ((mos7840_port->port_num == 3) - && (serial->num_ports == 4)) { - mos7840_port->SpRegOffset = 0xa; - mos7840_port->ControlRegOffset = 0xb; - mos7840_port->DcrRegOffset = 0x19; - } else if ((mos7840_port->port_num == 4) - && (serial->num_ports == 4)) { - mos7840_port->SpRegOffset = 0xc; - mos7840_port->ControlRegOffset = 0xd; - mos7840_port->DcrRegOffset = 0x1c; - } - mos7840_dump_serial_port(mos7840_port); - mos7840_set_port_private(serial->port[i], mos7840_port); + /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 + and 0x24 in DCR3 */ + Data = 0x01; + status = mos7840_set_reg_sync(port, + (__u16) (mos7840_port->DcrRegOffset + 0), Data); + if (status < 0) { + dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); + goto out; + } else + dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); - /* 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", status); - break; - } else - dbg("ControlReg Reading success val is %x, status%d", - Data, status); - 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 = mos7840_set_reg_sync(serial->port[i], - mos7840_port->ControlRegOffset, Data); - if (status < 0) { - dbg("Writing ControlReg failed(rx_disable) status-0x%x", status); - break; - } else - dbg("ControlReg Writing success(rx_disable) status%d", - status); + Data = 0x05; + status = mos7840_set_reg_sync(port, + (__u16) (mos7840_port->DcrRegOffset + 1), Data); + if (status < 0) { + dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); + goto out; + } else + dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); - /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 - and 0x24 in DCR3 */ - Data = 0x01; - status = mos7840_set_reg_sync(serial->port[i], - (__u16) (mos7840_port->DcrRegOffset + 0), Data); - if (status < 0) { - dbg("Writing DCR0 failed status-0x%x", status); - break; - } else - dbg("DCR0 Writing success status%d", status); + Data = 0x24; + status = mos7840_set_reg_sync(port, + (__u16) (mos7840_port->DcrRegOffset + 2), Data); + if (status < 0) { + dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); + goto out; + } else + dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); - Data = 0x05; - status = mos7840_set_reg_sync(serial->port[i], - (__u16) (mos7840_port->DcrRegOffset + 1), Data); - if (status < 0) { - dbg("Writing DCR1 failed status-0x%x", status); - break; - } else - dbg("DCR1 Writing success status%d", status); + /* write values in clkstart0x0 and clkmulti 0x20 */ + Data = 0x0; + 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; + } else + dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); - Data = 0x24; - status = mos7840_set_reg_sync(serial->port[i], - (__u16) (mos7840_port->DcrRegOffset + 2), Data); - if (status < 0) { - dbg("Writing DCR2 failed status-0x%x", status); - break; - } else - dbg("DCR2 Writing success status%d", status); + Data = 0x20; + status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data); + if (status < 0) { + dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); + goto error; + } else + dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); - /* write values in clkstart0x0 and clkmulti 0x20 */ - Data = 0x0; - status = mos7840_set_reg_sync(serial->port[i], - CLK_START_VALUE_REGISTER, Data); + /* write value 0x0 to scratchpad register */ + Data = 0x00; + 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; + } else + dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); + + /* Zero Length flag register */ + if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) { + Data = 0xff; + status = mos7840_set_reg_sync(port, + (__u16) (ZLP_REG1 + + ((__u16)mos7840_port->port_num)), Data); + dev_dbg(&port->dev, "ZLIP offset %x\n", + (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); if (status < 0) { - dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x", status); - break; + dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); + goto out; } else - dbg("CLK_START_VALUE_REGISTER Writing success status%d", status); - - Data = 0x20; - status = mos7840_set_reg_sync(serial->port[i], - CLK_MULTI_REGISTER, Data); + dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); + } else { + Data = 0xff; + status = mos7840_set_reg_sync(port, + (__u16) (ZLP_REG1 + + ((__u16)mos7840_port->port_num) - 0x1), Data); + dev_dbg(&port->dev, "ZLIP offset %x\n", + (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); if (status < 0) { - dbg("Writing CLK_MULTI_REGISTER failed status-0x%x", - status); - goto error; + dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); + goto out; } else - dbg("CLK_MULTI_REGISTER Writing success status%d", - status); + dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); - /* write value 0x0 to scratchpad register */ - Data = 0x00; - status = mos7840_set_uart_reg(serial->port[i], - SCRATCH_PAD_REGISTER, Data); - if (status < 0) { - dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", - status); - break; - } else - dbg("SCRATCH_PAD_REGISTER Writing success status%d", - 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; + } - /* Zero Length flag register */ - if ((mos7840_port->port_num != 1) - && (serial->num_ports == 2)) { - - Data = 0xff; - status = mos7840_set_reg_sync(serial->port[i], - (__u16) (ZLP_REG1 + - ((__u16)mos7840_port->port_num)), Data); - dbg("ZLIP offset %x", - (__u16) (ZLP_REG1 + - ((__u16) mos7840_port->port_num))); - if (status < 0) { - dbg("Writing ZLP_REG%d failed status-0x%x", - i + 2, status); - break; - } else - dbg("ZLP_REG%d Writing success status%d", - i + 2, status); - } else { - Data = 0xff; - status = mos7840_set_reg_sync(serial->port[i], - (__u16) (ZLP_REG1 + - ((__u16)mos7840_port->port_num) - 0x1), Data); - dbg("ZLIP offset %x", - (__u16) (ZLP_REG1 + - ((__u16) mos7840_port->port_num) - 0x1)); - if (status < 0) { - dbg("Writing ZLP_REG%d failed status-0x%x", - i + 1, status); - break; - } else - dbg("ZLP_REG%d Writing success status%d", - i + 1, status); + mos7840_port->has_led = false; - } - 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), + /* Initialize LED timers */ + if (device_type == MOSCHIP_DEVICE_ID_7810) { + mos7840_port->has_led = true; + + mos7840_port->led_urb = usb_alloc_urb(0, GFP_KERNEL); + mos7840_port->led_dr = kmalloc(sizeof(*mos7840_port->led_dr), GFP_KERNEL); - if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || - !mos7840_port->dr) { + if (!mos7840_port->led_urb || !mos7840_port->led_dr) { status = -ENOMEM; goto error; } - } - dbg ("mos7840_startup: all ports configured..........."); - /* Zero Length flag enable */ - Data = 0x0f; - status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); - if (status < 0) { - dbg("Writing ZLP_REG5 failed status-0x%x", status); - goto error; - } else - dbg("ZLP_REG5 Writing success status%d", status); + init_timer(&mos7840_port->led_timer1); + mos7840_port->led_timer1.function = mos7840_led_off; + mos7840_port->led_timer1.expires = + jiffies + msecs_to_jiffies(LED_ON_MS); + mos7840_port->led_timer1.data = (unsigned long)mos7840_port; + + init_timer(&mos7840_port->led_timer2); + mos7840_port->led_timer2.function = mos7840_led_flag_off; + mos7840_port->led_timer2.expires = + jiffies + msecs_to_jiffies(LED_OFF_MS); + mos7840_port->led_timer2.data = (unsigned long)mos7840_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), - (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ); + /* 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: - for (/* nothing */; i >= 0; i--) { - mos7840_port = mos7840_get_port_private(serial->port[i]); + 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); - kfree(mos7840_port->dr); - kfree(mos7840_port->ctrl_buf); - usb_free_urb(mos7840_port->control_urb); - kfree(mos7840_port); - serial->port[i] = NULL; - } return status; } -/**************************************************************************** - * mos7840_disconnect - * This function is called whenever the device is removed from the usb bus. - ****************************************************************************/ - -static void mos7840_disconnect(struct usb_serial *serial) +static int mos7840_port_remove(struct usb_serial_port *port) { - int i; - unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s", " disconnect :entering.........."); - - if (!serial) { - dbg("%s", "Invalid Handler"); - return; - } - - /* 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 */ - - for (i = 0; i < serial->num_ports; ++i) { - mos7840_port = mos7840_get_port_private(serial->port[i]); - dbg ("mos7840_port %d = %p", i, mos7840_port); - if (mos7840_port) { - spin_lock_irqsave(&mos7840_port->pool_lock, flags); - mos7840_port->zombie = 1; - spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); - usb_kill_urb(mos7840_port->control_urb); - } - } - dbg("%s", "Thank u :: "); + mos7840_port = mos7840_get_port_private(port); -} + if (mos7840_port->has_led) { + /* Turn off LED */ + mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); -/**************************************************************************** - * mos7840_release - * This function is called when the usb_serial structure is freed. - ****************************************************************************/ + del_timer_sync(&mos7840_port->led_timer1); + del_timer_sync(&mos7840_port->led_timer2); -static void mos7840_release(struct usb_serial *serial) -{ - int i; - struct moschip_port *mos7840_port; - dbg("%s", " release :entering.........."); - - if (!serial) { - dbg("%s", "Invalid Handler"); - return; + usb_kill_urb(mos7840_port->led_urb); + 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); - /* 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 */ - - for (i = 0; i < serial->num_ports; ++i) { - mos7840_port = mos7840_get_port_private(serial->port[i]); - dbg("mos7840_port %d = %p", i, mos7840_port); - if (mos7840_port) { - kfree(mos7840_port->ctrl_buf); - kfree(mos7840_port->dr); - kfree(mos7840_port); - } - } - - dbg("%s", "Thank u :: "); - + return 0; } -static struct usb_driver io_driver = { - .name = "mos7840", - .probe = usb_serial_probe, - .disconnect = usb_serial_disconnect, - .id_table = moschip_id_table_combined, - .no_dynamic_id = 1, -}; - static struct usb_serial_driver moschip7840_4port_device = { .driver = { .owner = THIS_MODULE, .name = "mos7840", }, .description = DRIVER_DESC, - .usb_driver = &io_driver, - .id_table = moschip_port_id_table, + .id_table = id_table, .num_ports = 4, .open = mos7840_open, .close = mos7840_close, @@ -2663,75 +2449,25 @@ static struct usb_serial_driver moschip7840_4port_device = { .throttle = mos7840_throttle, .unthrottle = mos7840_unthrottle, .calc_num_ports = mos7840_calc_num_ports, -#ifdef MCSSerialProbe - .probe = mos7840_serial_probe, -#endif + .probe = mos7840_probe, .ioctl = mos7840_ioctl, .set_termios = mos7840_set_termios, .break_ctl = mos7840_break, .tiocmget = mos7840_tiocmget, .tiocmset = mos7840_tiocmset, - .get_icount = mos7840_get_icount, - .attach = mos7840_startup, - .disconnect = mos7840_disconnect, - .release = mos7840_release, + .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, }; -/**************************************************************************** - * moschip7840_init - * This is called by the module subsystem, or on startup to initialize us - ****************************************************************************/ -static int __init moschip7840_init(void) -{ - int retval; - - dbg("%s", " mos7840_init :entering.........."); - - /* Register with the usb serial */ - retval = usb_serial_register(&moschip7840_4port_device); - - if (retval) - goto failed_port_device_register; - - dbg("%s", "Entering..."); - printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" - DRIVER_DESC "\n"); - - /* Register with the usb */ - retval = usb_register(&io_driver); - if (retval == 0) { - dbg("%s", "Leaving..."); - return 0; - } - usb_serial_deregister(&moschip7840_4port_device); -failed_port_device_register: - return retval; -} - -/**************************************************************************** - * moschip7840_exit - * Called when the driver is about to be unloaded. - ****************************************************************************/ -static void __exit moschip7840_exit(void) -{ - - dbg("%s", " mos7840_exit :entering.........."); - - usb_deregister(&io_driver); - - usb_serial_deregister(&moschip7840_4port_device); - - dbg("%s", "Entering..."); -} +static struct usb_serial_driver * const serial_drivers[] = { + &moschip7840_4port_device, NULL +}; -module_init(moschip7840_init); -module_exit(moschip7840_exit); +module_usb_serial_driver(serial_drivers, id_table); -/* Module information */ MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled or not"); |