diff options
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
| -rw-r--r-- | drivers/usb/serial/mos7840.c | 2245 |
1 files changed, 913 insertions, 1332 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index aeeb9cb2099..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> @@ -33,12 +32,8 @@ #include <linux/serial.h> #include <linux/usb.h> #include <linux/usb/serial.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> -/* - * Version Information - */ -#define DRIVER_VERSION "1.3.1" #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 @@ -102,8 +96,8 @@ #define MAX_NAME_LEN 64 -#define ZLP_REG1 0x3A //Zero_Flag_Reg1 58 -#define ZLP_REG5 0x3E //Zero_Flag_Reg5 62 +#define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ +#define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ /* For higher baud Rates use TIOCEXBAUD */ #define TIOCEXBAUD 0x5462 @@ -114,14 +108,33 @@ #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_USOPTL4_4 0xAC44 -#define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 +#define USB_VENDOR_ID_BANDB 0x0856 +#define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 +#define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 +#define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 +#define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 +#define BANDB_DEVICE_ID_US9ML2_2 0xAC29 +#define BANDB_DEVICE_ID_US9ML2_4 0xAC30 +#define BANDB_DEVICE_ID_USPTL4_2 0xAC31 +#define BANDB_DEVICE_ID_USPTL4_4 0xAC32 +#define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 +#define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 +#define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 +#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 */ @@ -142,7 +155,7 @@ #define MOS_MSR_DELTA_RI 0x40 #define MOS_MSR_DELTA_CD 0x80 -// Serial Port register Address +/* Serial Port register Address */ #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) #define LINE_CONTROL_REGISTER ((__u16)(0x03)) @@ -155,6 +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)) @@ -164,24 +178,37 @@ #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 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_USOPTL4_4)}, - {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, - {} /* terminating entry */ +enum mos7840_flag { + MOS7840_FLAG_CTRL_BUSY, + MOS7840_FLAG_LED_BUSY, }; -static __devinitdata struct usb_device_id moschip_id_table_combined[] = { +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_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, + {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)}, {} /* 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 */ @@ -189,23 +216,17 @@ 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 */ + /* Offsets */ __u8 SpRegOffset; __u8 ControlRegOffset; __u8 DcrRegOffset; - //for processing control URBS in interrupt context + /* for processing control URBS in interrupt context */ struct urb *control_urb; struct usb_ctrlrequest *dr; char *ctrl_buf; @@ -214,10 +235,17 @@ struct moschip_port { spinlock_t pool_lock; 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 @@ -230,7 +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\n", 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, @@ -244,16 +272,23 @@ static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, */ static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, - __u16 * val) + __u16 *val) { struct usb_device *dev = port->serial->dev; int ret = 0; + u8 *buf; + + buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (!buf) + return -ENOMEM; ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, - MCS_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH, + MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); - dbg("mos7840_get_reg_sync offset is %x, return val %x\n", reg, *val); - *val = (*val) & 0x00ff; + *val = buf[0]; + dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); + + kfree(buf); return ret; } @@ -269,27 +304,18 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, struct usb_device *dev = port->serial->dev; val = val & 0x00ff; - // For the UART control registers, the application number need to be Or'ed + /* For the UART control registers, the application number need + to be Or'ed */ if (port->serial->num_ports == 4) { - val |= - (((__u16) port->number - (__u16) (port->serial->minor)) + - 1) << 8; - dbg("mos7840_set_uart_reg application number is %x\n", 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\n", - 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\n", - 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); @@ -302,49 +328,44 @@ static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, * by passing usb_rcvctrlpipe function as parameter. */ static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, - __u16 * val) + __u16 *val) { struct usb_device *dev = port->serial->dev; int ret = 0; __u16 Wval; + u8 *buf; - //dbg("application number is %4x \n",(((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); - /*Wval is same as application number */ + buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + /* 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\n", 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\n", - 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\n", - 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, val, VENDOR_READ_LENGTH, + MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); - *val = (*val) & 0x00ff; + *val = buf[0]; + + kfree(buf); 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("***************************************\n"); - dbg("SpRegOffset is %2x\n", mos7840_port->SpRegOffset); - dbg("ControlRegOffset is %2x \n", mos7840_port->ControlRegOffset); - dbg("DCRRegOffset is %2x \n", mos7840_port->DcrRegOffset); - dbg("***************************************\n"); + 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); } @@ -373,29 +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); } } @@ -403,35 +417,25 @@ static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) { struct async_icount *icount; - dbg("%s - %02x", __FUNCTION__, new_lsr); - if (new_lsr & SERIAL_LSR_BI) { - // - // Parity and Framing errors only count if they - // occur exclusive of a break being - // received. - // + /* + * Parity and Framing errors only count if they + * occur exclusive of a break being + * received. + */ new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); } /* 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(); - } } /************************************************************************/ @@ -445,11 +449,11 @@ 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 = (struct moschip_port *)urb->context; + mos7840_port = urb->context; switch (status) { case 0: @@ -459,49 +463,41 @@ 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", __FUNCTION__, - 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", __FUNCTION__, - status); - goto exit; + dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); + goto out; } - dbg("%s urb buffer size is %d\n", __FUNCTION__, urb->actual_length); - dbg("%s mos7840_port->MsrLsr is %d port %d\n", __FUNCTION__, - 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\n", __FUNCTION__, 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", - __FUNCTION__, 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, - __u16 * val) + __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->wValue = cpu_to_le16(Wval); /* 0 */ dr->wIndex = cpu_to_le16(reg); dr->wLength = cpu_to_le16(2); @@ -510,9 +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 @@ -532,8 +606,6 @@ static void mos7840_interrupt_callback(struct urb *urb) __u16 wval, wreg = 0; int status = urb->status; - dbg("%s", " : Entering\n"); - switch (status) { case 0: /* success */ @@ -542,19 +614,19 @@ 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", __FUNCTION__, - 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", __FUNCTION__, - status); + 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 = (struct usb_serial *)urb->context; + serial = urb->context; /* Moschip get 5 bytes * Byte 1 IIR Port 1 (port.number is 0) @@ -564,7 +636,7 @@ static void mos7840_interrupt_callback(struct urb *urb) * Byte 5 FIFO status for both */ if (length && length > 5) { - dbg("%s \n", "Wrong data !!!"); + dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); return; } @@ -576,45 +648,37 @@ 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 !!!\n", 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\n"); + 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\n", 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); } } } - if (!(rv < 0)) /* the completion handler for the control urb will resubmit */ + if (!(rv < 0)) + /* the completion handler for the control urb will resubmit */ return; exit: result = usb_submit_urb(urb, GFP_ATOMIC); if (result) { dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n", - __FUNCTION__, result); + __func__, result); } } @@ -622,11 +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; } @@ -638,11 +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; } @@ -656,8 +720,8 @@ static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, if (!port || mos7840_port_paranoia_check(port, function) || mos7840_serial_paranoia_check(port->serial, function)) { - /* then say that we don't have a valid usb_serial thing, which will - * end up genrating -ENODEV return values */ + /* then say that we don't have a valid usb_serial thing, + * which will end up genrating -ENODEV return values */ return NULL; } @@ -677,82 +741,74 @@ 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; - if (status) { - dbg("nonzero read bulk status received: %d", status); + mos7840_port = urb->context; + if (!mos7840_port) return; - } - mos7840_port = (struct moschip_port *)urb->context; - if (!mos7840_port) { - dbg("%s", "NULL mos7840_port pointer \n"); + if (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; - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Port Paranoia failed \n"); + port = mos7840_port->port; + if (mos7840_port_paranoia_check(port, __func__)) { + mos7840_port->read_urb_busy = false; return; } - serial = mos7840_get_usb_serial(port, __FUNCTION__); + serial = mos7840_get_usb_serial(port, __func__); if (!serial) { - dbg("%s\n", "Bad serial pointer "); + mos7840_port->read_urb_busy = false; return; } - dbg("%s\n", "Entering... \n"); - data = urb->transfer_buffer; - - dbg("%s", "Entering ........... \n"); + usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); if (urb->actual_length) { - tty = mos7840_port->port->tty; - if (tty) { - tty_buffer_request_room(tty, urb->actual_length); - tty_insert_flip_string(tty, data, urb->actual_length); - dbg(" %s \n", data); - tty_flip_buffer_push(tty); - } - mos7840_port->icount.rx += urb->actual_length; - smp_wmb(); - dbg("mos7840_port->icount.rx is %d:\n", - 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 !!!\n"); + dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); + mos7840_port->read_urb_busy = false; return; } + if (mos7840_port->has_led) + mos7840_led_activity(port); - mos7840_port->read_urb->dev = serial->dev; - + 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; } } /***************************************************************************** * mos7840_bulk_out_data_callback - * this is the callback function for when we have finished sending serial data - * on the bulk out endpoint. + * this is the callback function for when we have finished sending + * serial data on the bulk out endpoint. *****************************************************************************/ static void mos7840_bulk_out_data_callback(struct urb *urb) { struct moschip_port *mos7840_port; - struct tty_struct *tty; + struct usb_serial_port *port; int status = urb->status; int i; - mos7840_port = (struct moschip_port *)urb->context; + 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]) { @@ -763,39 +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\n", status); + dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); return; } - if (mos7840_port_paranoia_check(mos7840_port->port, __FUNCTION__)) { - dbg("%s", "Port Paranoia failed \n"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - dbg("%s \n", "Entering ........."); - - tty = mos7840_port->port->tty; - - if (tty && mos7840_port->open) - tty_wakeup(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 @@ -804,7 +842,7 @@ static int mos7840_serial_probe(struct usb_serial *serial, * Otherwise we return a negative error number. *****************************************************************************/ -static int mos7840_open(struct usb_serial_port *port, struct file *filp) +static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) { int response; int j; @@ -815,17 +853,13 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp) struct moschip_port *mos7840_port; struct moschip_port *port0; - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Port Paranoia failed \n"); + if (mos7840_port_paranoia_check(port, __func__)) return -ENODEV; - } serial = port->serial; - if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) { - dbg("%s", "Serial Paranoia failed \n"); + if (mos7840_serial_paranoia_check(serial, __func__)) return -ENODEV; - } mos7840_port = mos7840_get_port_private(port); port0 = mos7840_get_port_private(serial->port[0]); @@ -841,17 +875,14 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp) for (j = 0; j < NUM_URBS; ++j) { urb = usb_alloc_urb(0, GFP_KERNEL); mos7840_port->write_urb_pool[j] = urb; - - if (urb == NULL) { - err("No more urbs???"); + if (!urb) continue; - } - urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); + urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, + GFP_KERNEL); if (!urb->transfer_buffer) { usb_free_urb(urb); mos7840_port->write_urb_pool[j] = NULL; - err("%s-out of memory for urb buffers.", __FUNCTION__); continue; } } @@ -868,70 +899,68 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp) * 0x08 : SP1/2 Control Reg *****************************************************************************/ -//NEED to check the following Block + /* NEED to check the following Block */ - status = 0; Data = 0x0; status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); if (status < 0) { - dbg("Reading Spreg failed\n"); - 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\n"); - 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\n"); - return -1; + dev_dbg(&port->dev, "writing Spreg failed\n"); + goto err; } -//End of block to be checked + /* End of block to be checked */ - status = 0; Data = 0x0; - status = - mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); + status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, + &Data); if (status < 0) { - dbg("Reading Controlreg failed\n"); - return -1; + 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); + Data |= 0x08; /* Driver done bit */ + Data |= 0x20; /* rx_disable */ + status = mos7840_set_reg_sync(port, + mos7840_port->ControlRegOffset, Data); if (status < 0) { - dbg("writing Controlreg failed\n"); - return -1; - } - //do register settings here - // Set all regs to the device default values. - //////////////////////////////////// - // First Disable all interrupts. - //////////////////////////////////// - + dev_dbg(&port->dev, "writing Controlreg failed\n"); + goto err; + } + /* do register settings here */ + /* Set all regs to the device default values. */ + /*********************************** + * First Disable all interrupts. + ***********************************/ Data = 0x00; status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); if (status < 0) { - dbg("disableing interrupts failed\n"); - return -1; + dev_dbg(&port->dev, "disabling interrupts failed\n"); + goto err; } - // Set FIFO_CONTROL_REGISTER to the default value + /* Set FIFO_CONTROL_REGISTER to the default value */ Data = 0x00; status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); if (status < 0) { - dbg("Writing FIFO_CONTROL_REGISTER failed\n"); - 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\n"); - return -1; + dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); + goto err; } Data = 0x03; @@ -946,90 +975,67 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp) status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); mos7840_port->shadowLCR = Data; - Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80 + Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); Data = 0x0c; - status = 0; status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); Data = 0x0; - status = 0; status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); Data = 0x00; - status = 0; status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); Data = Data & ~SERIAL_LCR_DLAB; - status = 0; status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); mos7840_port->shadowLCR = Data; - //clearing Bulkin and Bulkout Fifo + /* clearing Bulkin and Bulkout Fifo */ Data = 0x0; - status = 0; status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); Data = Data | 0x0c; - status = 0; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); Data = Data & ~0x0c; - status = 0; status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); - //Finally enable all interrupts - Data = 0x0; + /* Finally enable all interrupts */ Data = 0x0c; - status = 0; status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); - //clearing rx_disable + /* clearing rx_disable */ Data = 0x0; - status = 0; - status = - mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); + status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, + &Data); Data = Data & ~0x20; - status = 0; - status = - mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); + status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, + Data); - // rx_negate + /* rx_negate */ Data = 0x0; - status = 0; - status = - mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); + status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, + &Data); Data = Data | 0x10; - status = 0; - status = - mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); - - /* force low_latency on so that our tty_push actually forces * - * the data through,otherwise it is scheduled, and with * - * high data rates (like with OHCI) data can get lost. */ - - if (port->tty) - port->tty->low_latency = 1; -/* Check to see if we've set up our endpoint info yet * - * (can't set it up in mos7840_startup as the structures * - * were not set up at that time.) */ + 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) { if (serial->port[0]->interrupt_in_buffer == NULL) { - /* set up interrupt urb */ - usb_fill_int_urb(serial->port[0]->interrupt_in_urb, - serial->dev, - usb_rcvintpipe(serial->dev, - serial->port[0]-> - interrupt_in_endpointAddress), - serial->port[0]->interrupt_in_buffer, - serial->port[0]->interrupt_in_urb-> - transfer_buffer_length, - mos7840_interrupt_callback, - serial, - serial->port[0]->interrupt_in_urb-> - interval); + serial->dev, + usb_rcvintpipe(serial->dev, + serial->port[0]->interrupt_in_endpointAddress), + serial->port[0]->interrupt_in_buffer, + serial->port[0]->interrupt_in_urb-> + transfer_buffer_length, + mos7840_interrupt_callback, + serial, + serial->port[0]->interrupt_in_urb->interval); /* start interrupt read for mos7840 * * will continue as long as mos7840 is connected */ @@ -1038,8 +1044,8 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp) usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); if (response) { - err("%s - Error %d submitting interrupt urb", - __FUNCTION__, response); + dev_err(&port->dev, "%s - Error %d submitting " + "interrupt urb\n", __func__, response); } } @@ -1050,51 +1056,59 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp) * (can't set it up in mos7840_startup as the * * structures were not set up at that time.) */ - dbg("port number is %d \n", port->number); - dbg("serial number is %d \n", port->serial->minor); - dbg("Bulkin endpoint is %d \n", port->bulk_in_endpointAddress); - dbg("BulkOut endpoint is %d \n", port->bulk_out_endpointAddress); - dbg("Interrupt endpoint is %d \n", port->interrupt_in_endpointAddress); - dbg("port's number in the device is %d\n", 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\n", - 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) { - err("%s - Error %d submitting control urb", __FUNCTION__, - response); + dev_err(&port->dev, "%s - Error %d submitting control urb\n", + __func__, response); + 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 */ - mos7840_port->shadowMCR = MCR_MASTER_IE; /* Must set to enable ints! */ + /* Must set to enable ints! */ + mos7840_port->shadowMCR = MCR_MASTER_IE; /* send a open port command */ mos7840_port->open = 1; - //mos7840_change_port_settings(mos7840_port,old_termios); - mos7840_port->icount.tx = 0; - mos7840_port->icount.rx = 0; - - dbg("\n\nusb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p\n\n", serial, mos7840_port, port); + /* mos7840_change_port_settings(mos7840_port,old_termios); */ 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; } /***************************************************************************** @@ -1104,88 +1118,43 @@ static int mos7840_open(struct usb_serial_port *port, struct file *filp) * been written, but hasn't made it out the port yet) * If successful, we return the number of bytes left to be written in the * system, - * Otherwise we return a negative error number. + * Otherwise we return zero. *****************************************************************************/ -static int mos7840_chars_in_buffer(struct usb_serial_port *port) +static int mos7840_chars_in_buffer(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; int i; int chars = 0; unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s \n", " mos7840_chars_in_buffer:entering ..........."); - - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); - return -1; - } + if (mos7840_port_paranoia_check(port, __func__)) + return 0; mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) { - dbg("%s \n", "mos7840_break:leaving ..........."); - return -1; - } + if (mos7840_port == NULL) + return 0; - spin_lock_irqsave(&mos7840_port->pool_lock,flags); + 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; + 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", __FUNCTION__, chars); + spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); + dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); return chars; } -/************************************************************************ - * - * mos7840_block_until_tx_empty - * - * This function will block the close until one of the following: - * 1. TX count are 0 - * 2. The mos7840 has stopped - * 3. A timeout of 3 seconds without activity has expired - * - ************************************************************************/ -static void mos7840_block_until_tx_empty(struct moschip_port *mos7840_port) -{ - int timeout = HZ / 10; - int wait = 30; - int count; - - while (1) { - - count = mos7840_chars_in_buffer(mos7840_port->port); - - /* 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", __FUNCTION__); - return; - } else { - /* Reset timeout value back to seconds */ - wait = 30; - } - } -} - /***************************************************************************** * mos7840_close * this function is called by the tty driver when a port is closed *****************************************************************************/ -static void mos7840_close(struct usb_serial_port *port, struct file *filp) +static void mos7840_close(struct usb_serial_port *port) { struct usb_serial *serial; struct moschip_port *mos7840_port; @@ -1193,18 +1162,12 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp) int j; __u16 Data; - dbg("%s\n", "mos7840_close:entering..."); - - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Port Paranoia failed \n"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - serial = mos7840_get_usb_serial(port, __FUNCTION__); - if (!serial) { - dbg("%s", "Serial Paranoia failed \n"); + 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]); @@ -1226,48 +1189,22 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp) } } - if (serial->dev) { - /* flush and block until tx is empty */ - mos7840_block_until_tx_empty(mos7840_port); - } - - /* While closing port, shutdown all bulk read, write * - * and interrupt read if they exists */ - if (serial->dev) { - - if (mos7840_port->write_urb) { - dbg("%s", "Shutdown bulk write\n"); - usb_kill_urb(mos7840_port->write_urb); - } - - if (mos7840_port->read_urb) { - dbg("%s", "Shutdown bulk read\n"); - usb_kill_urb(mos7840_port->read_urb); - } - if ((&mos7840_port->control_urb)) { - dbg("%s", "Shutdown control read\n"); - // usb_kill_urb (mos7840_port->control_urb); + usb_kill_urb(mos7840_port->write_urb); + usb_kill_urb(mos7840_port->read_urb); + mos7840_port->read_urb_busy = false; - } - } -// if(mos7840_port->ctrl_buf != NULL) -// kfree(mos7840_port->ctrl_buf); port0->open_ports--; - dbg("mos7840_num_open_ports in close%d:in port%d\n", - port0->open_ports, port->number); + 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\n"); + 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); } @@ -1278,101 +1215,41 @@ static void mos7840_close(struct usb_serial_port *port, struct file *filp) mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); mos7840_port->open = 0; - - dbg("%s \n", "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 moschip_port - *mos7840_port) -{ - int timeout = 1 * HZ; - int wait = 10; - int count; - - while (1) { - count = mos7840_chars_in_buffer(mos7840_port->port); - - /* 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", __FUNCTION__); - return; - } else { - /* Reset timeout value back to seconds */ - wait = 10; - } - } - } /***************************************************************************** * mos7840_break * this function sends a break to the port *****************************************************************************/ -static void mos7840_break(struct usb_serial_port *port, int break_state) +static void mos7840_break(struct tty_struct *tty, int break_state) { + struct usb_serial_port *port = tty->driver_data; unsigned char data; struct usb_serial *serial; struct moschip_port *mos7840_port; - dbg("%s \n", "Entering ..........."); - dbg("mos7840_break: Start\n"); - - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Port Paranoia failed \n"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - serial = mos7840_get_usb_serial(port, __FUNCTION__); - if (!serial) { - dbg("%s", "Serial Paranoia failed \n"); + serial = mos7840_get_usb_serial(port, __func__); + if (!serial) return; - } mos7840_port = mos7840_get_port_private(port); - if (mos7840_port == NULL) { + if (mos7840_port == NULL) return; - } - - if (serial->dev) { - /* flush and block until tx is empty */ - mos7840_block_until_chase_response(mos7840_port); - } - - if (break_state == -1) { + if (break_state == -1) data = mos7840_port->shadowLCR | LCR_SET_BREAK; - } else { + else data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; - } + /* FIXME: no locking on shadowLCR anywhere in driver */ mos7840_port->shadowLCR = data; - dbg("mcs7840_break mos7840_port->shadowLCR is %x\n", - 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); - - return; } /***************************************************************************** @@ -1383,37 +1260,30 @@ static void mos7840_break(struct usb_serial_port *port, int break_state) * Otherwise we return a negative error number. *****************************************************************************/ -static int mos7840_write_room(struct usb_serial_port *port) +static int mos7840_write_room(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; int i; int room = 0; unsigned long flags; struct moschip_port *mos7840_port; - dbg("%s \n", " mos7840_write_room:entering ..........."); - - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); - dbg("%s \n", " 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 \n", "mos7840_break:leaving ..........."); + if (mos7840_port == NULL) return -1; - } spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { - if (!mos7840_port->busy[i]) { + if (!mos7840_port->busy[i]) room += URB_TRANSFER_BUFFER_SIZE; - } } spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; - dbg("%s - returns %d", __FUNCTION__, room); + dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); return room; } @@ -1426,7 +1296,7 @@ static int mos7840_write_room(struct usb_serial_port *port) * return a negative error number. *****************************************************************************/ -static int mos7840_write(struct usb_serial_port *port, +static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count) { int status; @@ -1438,64 +1308,49 @@ static int mos7840_write(struct usb_serial_port *port, struct moschip_port *mos7840_port; struct usb_serial *serial; struct urb *urb; - //__u16 Data; + /* __u16 Data; */ const unsigned char *current_position = data; unsigned char *data1; - dbg("%s \n", "entering ..........."); - //dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",mos7840_port->shadowLCR); #ifdef NOTMOS7840 Data = 0x00; - status = 0; status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); mos7840_port->shadowLCR = Data; - dbg("mos7840_write: LINE_CONTROL_REGISTER is %x\n", Data); - dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", - mos7840_port->shadowLCR); + 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); - //mos7840_port->shadowLCR=Data;//Need to add later + /* Data = 0x03; */ + /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ + /* mos7840_port->shadowLCR=Data;//Need to add later */ - Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80 - status = 0; + Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); - //Data = 0x0c; - //status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); + /* Data = 0x0c; */ + /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ Data = 0x00; - status = 0; status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); - dbg("mos7840_write:DLL value is %x\n", Data); + dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data); Data = 0x0; - status = 0; status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); - dbg("mos7840_write:DLM value is %x\n", 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\n", - mos7840_port->shadowLCR); - status = 0; + 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, __FUNCTION__)) { - dbg("%s", "Port Paranoia failed \n"); + if (mos7840_port_paranoia_check(port, __func__)) return -1; - } serial = port->serial; - if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) { - dbg("%s", "Serial Paranoia failed \n"); + 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\n"); + if (mos7840_port == NULL) return -1; - } /* try to find a free urb in the list */ urb = NULL; @@ -1505,58 +1360,66 @@ static int mos7840_write(struct usb_serial_port *port, if (!mos7840_port->busy[i]) { mos7840_port->busy[i] = 1; urb = mos7840_port->write_urb_pool[i]; - dbg("\nURB:%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", __FUNCTION__); + 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) { - err("%s no more kernel memory...", __FUNCTION__); + 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("\nbulkout 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; - err("%s - usb_submit_urb(write bulk) failed with status = %d", - __FUNCTION__, status); + 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:\n", mos7840_port->icount.tx); - exit: - + port->icount.tx += transfer_size; + dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); +exit: return bytes_sent; } @@ -1567,18 +1430,14 @@ static int mos7840_write(struct usb_serial_port *port, * being read from the port. *****************************************************************************/ -static void mos7840_throttle(struct usb_serial_port *port) +static void mos7840_throttle(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7840_port; - struct tty_struct *tty; int status; - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - - dbg("- port %d\n", port->number); mos7840_port = mos7840_get_port_private(port); @@ -1586,115 +1445,87 @@ static void mos7840_throttle(struct usb_serial_port *port) return; if (!mos7840_port->open) { - dbg("%s\n", "port not opened"); - return; - } - - dbg("%s", "Entering .......... \n"); - - tty = port->tty; - if (!tty) { - dbg("%s - no tty available", __FUNCTION__); + 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); - status = mos7840_write(port, &stop_char, 1); - if (status <= 0) { + status = mos7840_write(tty, port, &stop_char, 1); + if (status <= 0) return; - } } - /* if we are implementing RTS/CTS, toggle that line */ - if (tty->termios->c_cflag & CRTSCTS) { + if (tty->termios.c_cflag & CRTSCTS) { mos7840_port->shadowMCR &= ~MCR_RTS; - status = 0; - status = - mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, + status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mos7840_port->shadowMCR); - - if (status < 0) { + if (status < 0) return; - } } - - return; } /***************************************************************************** * mos7840_unthrottle - * this function is called by the tty driver when it wants to resume the data - * being read from the port (called after SerialThrottle is called) + * this function is called by the tty driver when it wants to resume + * the data being read from the port (called after mos7840_throttle is + * called) *****************************************************************************/ -static void mos7840_unthrottle(struct usb_serial_port *port) +static void mos7840_unthrottle(struct tty_struct *tty) { - struct tty_struct *tty; + struct usb_serial_port *port = tty->driver_data; int status; struct moschip_port *mos7840_port = mos7840_get_port_private(port); - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } if (mos7840_port == NULL) return; if (!mos7840_port->open) { - dbg("%s - port not opened", __FUNCTION__); - return; - } - - dbg("%s", "Entering .......... \n"); - - tty = port->tty; - if (!tty) { - dbg("%s - no tty available", __FUNCTION__); + 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)) { unsigned char start_char = START_CHAR(tty); - status = mos7840_write(port, &start_char, 1); - if (status <= 0) { + status = mos7840_write(tty, port, &start_char, 1); + if (status <= 0) return; - } } /* if we are implementing RTS/CTS, toggle that line */ - if (tty->termios->c_cflag & CRTSCTS) { + if (tty->termios.c_cflag & CRTSCTS) { mos7840_port->shadowMCR |= MCR_RTS; - status = 0; - status = - mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, + status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mos7840_port->shadowMCR); - if (status < 0) { + if (status < 0) return; - } } - - return; } -static int mos7840_tiocmget(struct usb_serial_port *port, struct file *file) +static int mos7840_tiocmget(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct moschip_port *mos7840_port; unsigned int result; __u16 msr; __u16 mcr; - int status = 0; + int status; mos7840_port = mos7840_get_port_private(port); - dbg("%s - port %d", __FUNCTION__, 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) @@ -1703,25 +1534,25 @@ static int mos7840_tiocmget(struct usb_serial_port *port, struct file *file) | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); - dbg("%s - 0x%04X", __FUNCTION__, result); + dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); return result; } -static int mos7840_tiocmset(struct usb_serial_port *port, 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; struct moschip_port *mos7840_port; unsigned int mcr; - unsigned int status; - - dbg("%s - port %d", __FUNCTION__, port->number); + 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) mcr &= ~MCR_RTS; @@ -1739,11 +1570,10 @@ static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file, mos7840_port->shadowMCR = mcr; - status = 0; status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); if (status < 0) { - dbg("setting MODEM_CONTROL_REGISTER Failed\n"); - return -1; + dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); + return status; } return 0; @@ -1754,11 +1584,11 @@ static int mos7840_tiocmset(struct usb_serial_port *port, 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, - __u16 * clk_sel_val) +static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, + int baudRate, int *divisor, + __u16 *clk_sel_val) { - - dbg("%s - %d", __FUNCTION__, baudRate); + dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); if (baudRate <= 115200) { *divisor = 115200 / baudRate; @@ -1807,16 +1637,15 @@ static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, /* Check for round off */ round1 = (__u16) (2304000L / baudrate); round = (__u16) (round1 - (custom * 10)); - if (round > 4) { + if (round > 4) custom++; - } *divisor = custom; - dbg(" Baud %d = %d\n", baudrate, custom); + dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom); return 0; } - dbg("%s\n", " Baud calculation Failed..."); + dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n"); return -1; #endif } @@ -1840,83 +1669,68 @@ 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, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); + port = mos7840_port->port; + if (mos7840_port_paranoia_check(port, __func__)) return -1; - } - if (mos7840_serial_paranoia_check(port->serial, __FUNCTION__)) { - dbg("%s", "Invalid Serial \n"); + if (mos7840_serial_paranoia_check(port->serial, __func__)) return -1; - } - - dbg("%s", "Entering .......... \n"); - number = mos7840_port->port->number - mos7840_port->port->serial->minor; + number = mos7840_port->port->port_number; - dbg("%s - port = %d, baud = %d", __FUNCTION__, - mos7840_port->port->number, baudRate); - //reset clk_uart_sel in spregOffset + dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); + /* reset clk_uart_sel in spregOffset */ if (baudRate > 115200) { #ifdef HW_flow_control - //NOTE: need to see the pther register to modify - //setting h/w flow control bit to 1; - status = 0; + /* NOTE: need to see the pther register to modify */ + /* setting h/w flow control bit to 1 */ Data = 0x2b; mos7840_port->shadowMCR = Data; - status = - mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, + Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud\n"); + 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; - status = 0; + /* setting h/w flow control bit to 0 */ Data = 0xb; mos7840_port->shadowMCR = Data; - status = - mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, + Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud\n"); + dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); return -1; } #endif } - if (1) //baudRate <= 115200) - { + if (1) { /* baudRate <= 115200) */ clk_sel_val = 0x0; Data = 0x0; - status = 0; - status = - mos7840_calc_baud_rate_divisor(baudRate, &divisor, + status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, &clk_sel_val); - status = - mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, - &Data); + status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, + &Data); if (status < 0) { - dbg("reading spreg failed in set_serial_baud\n"); + dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); return -1; } Data = (Data & 0x8f) | clk_sel_val; - status = 0; - status = - mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); + status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, + Data); if (status < 0) { - dbg("Writing spreg failed in set_serial_baud\n"); + dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); return -1; } /* Calculate the Divisor */ if (status) { - err("%s - bad baud rate", __FUNCTION__); - dbg("%s\n", "bad baud rate"); + dev_err(&port->dev, "%s - bad baud rate\n", __func__); return status; } /* Enable access to divisor latch */ @@ -1926,11 +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\n", 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\n", 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 */ @@ -1939,7 +1753,6 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); } - return status; } @@ -1949,10 +1762,9 @@ static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, * the specified new settings. *****************************************************************************/ -static void mos7840_change_port_settings(struct moschip_port *mos7840_port, - struct ktermios *old_termios) +static void mos7840_change_port_settings(struct tty_struct *tty, + struct moschip_port *mos7840_port, struct ktermios *old_termios) { - struct tty_struct *tty; int baud; unsigned cflag; unsigned iflag; @@ -1967,83 +1779,72 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port, if (mos7840_port == NULL) return; - port = (struct usb_serial_port *)mos7840_port->port; + port = mos7840_port->port; - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); + if (mos7840_port_paranoia_check(port, __func__)) return; - } - if (mos7840_serial_paranoia_check(port->serial, __FUNCTION__)) { - dbg("%s", "Invalid Serial \n"); + if (mos7840_serial_paranoia_check(port->serial, __func__)) return; - } serial = port->serial; - dbg("%s - port %d", __FUNCTION__, mos7840_port->port->number); - if (!mos7840_port->open) { - dbg("%s - port not opened", __FUNCTION__); + dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; } - tty = mos7840_port->port->tty; - - dbg("%s", "Entering .......... \n"); - 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", __FUNCTION__); + dev_dbg(&port->dev, "%s - parity = odd\n", __func__); } else { lParity = LCR_PAR_EVEN; - dbg("%s - parity = even", __FUNCTION__); + dev_dbg(&port->dev, "%s - parity = even\n", __func__); } } else { - dbg("%s - parity = none", __FUNCTION__); + dev_dbg(&port->dev, "%s - parity = none\n", __func__); } - if (cflag & CMSPAR) { + if (cflag & CMSPAR) lParity = lParity | 0x20; - } /* Change the Stop bit */ if (cflag & CSTOPB) { lStop = LCR_STOP_2; - dbg("%s - stop bits = 2", __FUNCTION__); + dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); } else { lStop = LCR_STOP_1; - dbg("%s - stop bits = 1", __FUNCTION__); + dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); } /* Update the LCR with the correct value */ @@ -2051,8 +1852,8 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port, ~(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\n", - 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); @@ -2077,16 +1878,13 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port, /* set up the MCR register and send it to the mos7840 */ mos7840_port->shadowMCR = MCR_MASTER_IE; - if (cflag & CBAUD) { + if (cflag & CBAUD) mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); - } - if (cflag & CRTSCTS) { + if (cflag & CRTSCTS) mos7840_port->shadowMCR |= (MCR_XON_ANY); - - } else { + else mos7840_port->shadowMCR &= ~(MCR_XON_ANY); - } Data = mos7840_port->shadowMCR; mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); @@ -2096,33 +1894,28 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port, if (!baud) { /* pick a default, any default... */ - dbg("%s\n", "Picked default baud..."); + dev_dbg(&port->dev, "%s", "Picked default baud...\n"); baud = 9600; } - dbg("%s - baud rate = %d", __FUNCTION__, baud); + dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); /* Enable Interrupts */ Data = 0x0c; mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); - if (mos7840_port->read_urb->status != -EINPROGRESS) { - mos7840_port->read_urb->dev = serial->dev; - + if (mos7840_port->read_urb_busy == false) { + 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\n", - mos7840_port->shadowLCR); - - return; + dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, + mos7840_port->shadowLCR); } /***************************************************************************** @@ -2131,67 +1924,60 @@ static void mos7840_change_port_settings(struct moschip_port *mos7840_port, * the termios structure *****************************************************************************/ -static void mos7840_set_termios(struct usb_serial_port *port, +static void mos7840_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) { int status; unsigned int cflag; struct usb_serial *serial; struct moschip_port *mos7840_port; - struct tty_struct *tty; - dbg("mos7840_set_termios: START\n"); - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); + + if (mos7840_port_paranoia_check(port, __func__)) return; - } serial = port->serial; - if (mos7840_serial_paranoia_check(serial, __FUNCTION__)) { - dbg("%s", "Invalid Serial \n"); + if (mos7840_serial_paranoia_check(serial, __func__)) return; - } mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) return; - tty = port->tty; - if (!mos7840_port->open) { - dbg("%s - port not opened", __FUNCTION__); + dev_dbg(&port->dev, "%s - port not opened\n", __func__); return; } - dbg("%s\n", "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", __FUNCTION__, - tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); - dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__, - old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); - dbg("%s - port %d", __FUNCTION__, 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(mos7840_port, old_termios); + mos7840_change_port_settings(tty, mos7840_port, old_termios); if (!mos7840_port->read_urb) { - dbg("%s", "URB KILLED !!!!!\n"); + dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); return; } - if (mos7840_port->read_urb->status != -EINPROGRESS) { - mos7840_port->read_urb->dev = serial->dev; + if (mos7840_port->read_urb_busy == false) { + 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; } } - return; } /***************************************************************************** @@ -2205,116 +1991,15 @@ static void mos7840_set_termios(struct usb_serial_port *port, * allows an RS485 driver to be written in user space. *****************************************************************************/ -static int mos7840_get_lsr_info(struct moschip_port *mos7840_port, +static int mos7840_get_lsr_info(struct tty_struct *tty, unsigned int __user *value) { int count; unsigned int result = 0; - count = mos7840_chars_in_buffer(mos7840_port->port); - if (count == 0) { - dbg("%s -- Empty", __FUNCTION__); + count = mos7840_chars_in_buffer(tty); + if (count == 0) result = TIOCSER_TEMT; - } - - if (copy_to_user(value, &result, sizeof(int))) - return -EFAULT; - return 0; -} - -/***************************************************************************** - * mos7840_set_modem_info - * function to set modem info - *****************************************************************************/ - -static int mos7840_set_modem_info(struct moschip_port *mos7840_port, - unsigned int cmd, unsigned int __user *value) -{ - unsigned int mcr; - unsigned int arg; - __u16 Data; - int status; - struct usb_serial_port *port; - - if (mos7840_port == NULL) - return -1; - - port = (struct usb_serial_port *)mos7840_port->port; - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); - return -1; - } - - mcr = mos7840_port->shadowMCR; - - if (copy_from_user(&arg, value, sizeof(int))) - return -EFAULT; - - switch (cmd) { - case TIOCMBIS: - if (arg & TIOCM_RTS) - mcr |= MCR_RTS; - if (arg & TIOCM_DTR) - mcr |= MCR_RTS; - if (arg & TIOCM_LOOP) - mcr |= MCR_LOOPBACK; - break; - - case TIOCMBIC: - if (arg & TIOCM_RTS) - mcr &= ~MCR_RTS; - if (arg & TIOCM_DTR) - mcr &= ~MCR_RTS; - if (arg & TIOCM_LOOP) - mcr &= ~MCR_LOOPBACK; - break; - - case TIOCMSET: - /* turn off the RTS and DTR and LOOPBACK - * and then only turn on what was asked to */ - mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK); - mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0); - mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0); - mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0); - break; - } - - mos7840_port->shadowMCR = mcr; - - Data = mos7840_port->shadowMCR; - status = 0; - status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); - if (status < 0) { - dbg("setting MODEM_CONTROL_REGISTER Failed\n"); - return -1; - } - - return 0; -} - -/***************************************************************************** - * mos7840_get_modem_info - * function to get modem info - *****************************************************************************/ - -static int mos7840_get_modem_info(struct moschip_port *mos7840_port, - unsigned int __user *value) -{ - unsigned int result = 0; - __u16 msr; - unsigned int mcr = mos7840_port->shadowMCR; - int status = 0; - status = - mos7840_get_uart_reg(mos7840_port->port, MODEM_STATUS_REGISTER, - &msr); - result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ - |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ - |((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ - |((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */ - |((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ - |((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ - - dbg("%s -- %x", __FUNCTION__, result); if (copy_to_user(value, &result, sizeof(int))) return -EFAULT; @@ -2340,8 +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; @@ -2359,452 +2044,403 @@ static int mos7840_get_serial_info(struct moschip_port *mos7840_port, * this function handles any ioctl calls to the driver *****************************************************************************/ -static int mos7840_ioctl(struct usb_serial_port *port, struct file *file, +static int mos7840_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { + struct usb_serial_port *port = tty->driver_data; void __user *argp = (void __user *)arg; struct moschip_port *mos7840_port; - struct tty_struct *tty; - - struct async_icount cnow; - struct async_icount cprev; - struct serial_icounter_struct icount; - int mosret = 0; - if (mos7840_port_paranoia_check(port, __FUNCTION__)) { - dbg("%s", "Invalid port \n"); + if (mos7840_port_paranoia_check(port, __func__)) return -1; - } mos7840_port = mos7840_get_port_private(port); if (mos7840_port == NULL) return -1; - tty = mos7840_port->port->tty; - - dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd); - switch (cmd) { /* return number of bytes available */ case TIOCSERGETLSR: - dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number); - return mos7840_get_lsr_info(mos7840_port, argp); - return 0; - - case TIOCMBIS: - case TIOCMBIC: - case TIOCMSET: - dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, - port->number); - mosret = - mos7840_set_modem_info(mos7840_port, cmd, argp); - return mosret; - - case TIOCMGET: - dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number); - return mos7840_get_modem_info(mos7840_port, argp); + dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); + return mos7840_get_lsr_info(tty, argp); case TIOCGSERIAL: - dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number); + dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); return mos7840_get_serial_info(mos7840_port, argp); case TIOCSSERIAL: - dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number); + dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); break; - - case TIOCMIWAIT: - dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, 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; - - case TIOCGICOUNT: - 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", __FUNCTION__, - port->number, icount.rx, icount.tx); - if (copy_to_user(argp, &icount, sizeof(icount))) - return -EFAULT; - return 0; - - case TIOCEXBAUD: - return 0; default: break; } - return -ENOIOCTLCMD; } -static int mos7840_calc_num_ports(struct usb_serial *serial) +static int mos7810_check(struct usb_serial *serial) { - int mos7840_num_ports = 0; + 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; - dbg("numberofendpoints: %d \n", - (int)serial->interface->cur_altsetting->desc.bNumEndpoints); - dbg("numberofendpoints: %d \n", - (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; + pass_count++; } - return mos7840_num_ports; -} + /* 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); -/**************************************************************************** - * mos7840_startup - ****************************************************************************/ + kfree(buf); -static int mos7840_startup(struct usb_serial *serial) -{ - struct moschip_port *mos7840_port; - struct usb_device *dev; - int i, status; + if (pass_count == 16) + return 1; - __u16 Data; - dbg("%s \n", " mos7840_startup :entering.........."); + return 0; +} - if (!serial) { - dbg("%s\n", "Invalid Handler"); - return -1; +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; } - dev = serial->dev; + 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; - dbg("%s\n", "Entering..."); + 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 device_type = (unsigned long)usb_get_serial_data(serial); + int mos7840_num_ports; + + mos7840_num_ports = (device_type >> 4) & 0x000F; + + return mos7840_num_ports; +} + +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; + int status; + int pnum; + __u16 Data; /* we set up the pointers to the endpoints in the mos7840_open * * function, as the structures aren't created yet. */ - /* set up port private structures */ - for (i = 0; i < serial->num_ports; ++i) { - mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); - if (mos7840_port == NULL) { - err("%s - Out of memory", __FUNCTION__); - status = -ENOMEM; - i--; /* don't follow NULL pointer cleaning up */ - goto error; - } + pnum = port->port_number; + + 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; + + /* 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 */ + + /* 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 comman 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); - - mos7840_port->port_num = ((serial->port[i]->number - - (serial->port[i]->serial->minor)) + - 1); - - 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); + /* 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); - mos7840_set_port_private(serial->port[i], mos7840_port); + 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); - //enable rx_disable bit in control register + 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); - status = - mos7840_get_reg_sync(serial->port[i], - mos7840_port->ControlRegOffset, &Data); - if (status < 0) { - dbg("Reading ControlReg failed status-0x%x\n", status); - break; - } else - dbg("ControlReg Reading success val is %x, status%d\n", - Data, status); - Data |= 0x08; //setting driver done bit - Data |= 0x04; //sp1_bit to have cts change reflect in modem status reg - - //Data |= 0x20; //rx_disable bit - status = 0; - status = - mos7840_set_reg_sync(serial->port[i], - mos7840_port->ControlRegOffset, Data); - if (status < 0) { - dbg("Writing ControlReg failed(rx_disable) status-0x%x\n", status); - break; - } else - dbg("ControlReg Writing success(rx_disable) status%d\n", - 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); - //Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 and 0x24 in DCR3 - Data = 0x01; - status = 0; - status = - mos7840_set_reg_sync(serial->port[i], - (__u16) (mos7840_port->DcrRegOffset + - 0), Data); - if (status < 0) { - dbg("Writing DCR0 failed status-0x%x\n", status); - break; - } else - dbg("DCR0 Writing success status%d\n", status); - - Data = 0x05; - status = 0; - status = - mos7840_set_reg_sync(serial->port[i], - (__u16) (mos7840_port->DcrRegOffset + - 1), Data); - if (status < 0) { - dbg("Writing DCR1 failed status-0x%x\n", status); - break; - } else - dbg("DCR1 Writing success status%d\n", status); - - Data = 0x24; - status = 0; - status = - mos7840_set_reg_sync(serial->port[i], - (__u16) (mos7840_port->DcrRegOffset + - 2), Data); - if (status < 0) { - dbg("Writing DCR2 failed status-0x%x\n", status); - break; - } else - dbg("DCR2 Writing success status%d\n", 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 = 0; - 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\n", 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\n", 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\n", - 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\n", - 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\n", - status); - break; - } else - dbg("SCRATCH_PAD_REGISTER Writing success status%d\n", - 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 = 0; - status = mos7840_set_reg_sync(serial->port[i], - (__u16) (ZLP_REG1 + - ((__u16) - mos7840_port-> - port_num)), - Data); - dbg("ZLIP offset%x\n", - (__u16) (ZLP_REG1 + - ((__u16) mos7840_port->port_num))); - if (status < 0) { - dbg("Writing ZLP_REG%d failed status-0x%x\n", - i + 2, status); - break; - } else - dbg("ZLP_REG%d Writing success status%d\n", - i + 2, status); - } else { - Data = 0xff; - status = 0; - status = mos7840_set_reg_sync(serial->port[i], - (__u16) (ZLP_REG1 + - ((__u16) - mos7840_port-> - port_num) - - 0x1), Data); - dbg("ZLIP offset%x\n", - (__u16) (ZLP_REG1 + - ((__u16) mos7840_port->port_num) - 0x1)); - if (status < 0) { - dbg("Writing ZLP_REG%d failed status-0x%x\n", - i + 1, status); - break; - } else - dbg("ZLP_REG%d Writing success status%d\n", - 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), GFP_KERNEL); - if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || !mos7840_port->dr) { + /* 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->led_urb || !mos7840_port->led_dr) { status = -ENOMEM; goto error; } - } - //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\n", status); - goto error; - } else - dbg("ZLP_REG5 Writing success status%d\n", 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_shutdown - * This function is called whenever the device is removed from the usb bus. - ****************************************************************************/ - -static void mos7840_shutdown(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 \n", " shutdown :entering.........."); - if (!serial) { - dbg("%s", "Invalid Handler \n"); - return; - } + mos7840_port = mos7840_get_port_private(port); - /* check for the ports to be closed,close the ports and disconnect */ + if (mos7840_port->has_led) { + /* Turn off LED */ + mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); - /* free private structure allocated for serial port * - * stop reads and writes on all ports */ + del_timer_sync(&mos7840_port->led_timer1); + del_timer_sync(&mos7840_port->led_timer2); - for (i = 0; i < serial->num_ports; ++i) { - mos7840_port = mos7840_get_port_private(serial->port[i]); - 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); - kfree(mos7840_port->ctrl_buf); - kfree(mos7840_port->dr); - kfree(mos7840_port); - mos7840_set_port_private(serial->port[i], NULL); + 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); - dbg("%s\n", "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, - .num_interrupt_in = 1, //NUM_DONT_CARE,//1, -#ifdef check - .num_bulk_in = 4, - .num_bulk_out = 4, + .id_table = id_table, .num_ports = 4, -#endif .open = mos7840_open, .close = mos7840_close, .write = mos7840_write, @@ -2813,80 +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, - .attach = mos7840_startup, - .shutdown = mos7840_shutdown, + .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 \n", " mos7840_init :entering.........."); - - /* Register with the usb serial */ - retval = usb_serial_register(&moschip7840_4port_device); - - if (retval) - goto failed_port_device_register; - - dbg("%s\n", "Entring..."); - info(DRIVER_DESC " " DRIVER_VERSION); - - /* Register with the usb */ - retval = usb_register(&io_driver); - - if (retval) - goto failed_usb_register; - - if (retval == 0) { - dbg("%s\n", "Leaving..."); - return 0; - } - - failed_usb_register: - usb_serial_deregister(&moschip7840_4port_device); - - failed_port_device_register: - - return retval; -} - -/**************************************************************************** - * moschip7840_exit - * Called when the driver is about to be unloaded. - ****************************************************************************/ -static void __exit moschip7840_exit(void) -{ - - dbg("%s \n", " mos7840_exit :entering.........."); - - usb_deregister(&io_driver); - - usb_serial_deregister(&moschip7840_4port_device); - - dbg("%s\n", "Entring..."); -} +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"); |