USB-serial updates for v4.9-rc1

More clean ups, including a second set of changes from Mathieu as part
 of a major overhaul of the ti_usb_3410_5052 driver.
 
 Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next

Johan writes:

USB-serial updates for v4.9-rc1

More clean ups, including a second set of changes from Mathieu as part
of a major overhaul of the ti_usb_3410_5052 driver.

Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Greg Kroah-Hartman 2016-09-16 17:42:59 +02:00
commit eddde28895
2 changed files with 60 additions and 115 deletions

View file

@ -30,12 +30,12 @@
#include <linux/usb/ezusb.h>
/* make a simple define to handle if we are compiling keyspan_pda or xircom support */
#if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
#if IS_ENABLED(CONFIG_USB_SERIAL_KEYSPAN_PDA)
#define KEYSPAN
#else
#undef KEYSPAN
#endif
#if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
#if IS_ENABLED(CONFIG_USB_SERIAL_XIRCOM)
#define XIRCOM
#else
#undef XIRCOM

View file

@ -179,23 +179,23 @@
/* Config struct */
struct ti_uart_config {
__u16 wBaudRate;
__u16 wFlags;
__u8 bDataBits;
__u8 bParity;
__u8 bStopBits;
__be16 wBaudRate;
__be16 wFlags;
u8 bDataBits;
u8 bParity;
u8 bStopBits;
char cXon;
char cXoff;
__u8 bUartMode;
u8 bUartMode;
} __packed;
/* Get port status */
struct ti_port_status {
__u8 bCmdCode;
__u8 bModuleId;
__u8 bErrorCode;
__u8 bMSR;
__u8 bLSR;
u8 bCmdCode;
u8 bModuleId;
u8 bErrorCode;
u8 bMSR;
u8 bLSR;
} __packed;
/* Purge modes */
@ -218,12 +218,12 @@ struct ti_port_status {
#define TI_RW_DATA_DOUBLE_WORD 0x04
struct ti_write_data_bytes {
__u8 bAddrType;
__u8 bDataType;
__u8 bDataCounter;
u8 bAddrType;
u8 bDataType;
u8 bDataCounter;
__be16 wBaseAddrHi;
__be16 wBaseAddrLo;
__u8 bData[0];
u8 bData[0];
} __packed;
struct ti_read_data_request {
@ -258,7 +258,7 @@ struct ti_interrupt {
/* Firmware image header */
struct ti_firmware_header {
__le16 wLength;
__u8 bCheckSum;
u8 bCheckSum;
} __packed;
/* UART addresses */
@ -276,9 +276,6 @@ struct ti_firmware_header {
#define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
/* supported setserial flags */
#define TI_SET_SERIAL_FLAGS 0
/* read urb states */
#define TI_READ_URB_RUNNING 0
#define TI_READ_URB_STOPPING 1
@ -288,11 +285,10 @@ struct ti_firmware_header {
struct ti_port {
int tp_is_open;
__u8 tp_msr;
__u8 tp_shadow_mcr;
__u8 tp_uart_mode; /* 232 or 485 modes */
u8 tp_msr;
u8 tp_shadow_mcr;
u8 tp_uart_mode; /* 232 or 485 modes */
unsigned int tp_uart_base_addr;
int tp_flags;
struct ti_device *tp_tdev;
struct usb_serial_port *tp_port;
spinlock_t tp_lock;
@ -306,7 +302,6 @@ struct ti_device {
struct usb_serial *td_serial;
int td_is_3410;
bool td_rs485_only;
int td_urb_error;
};
static int ti_startup(struct usb_serial *serial);
@ -343,7 +338,7 @@ static int ti_get_serial_info(struct ti_port *tport,
struct serial_struct __user *ret_arg);
static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
struct serial_struct __user *new_arg);
static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
@ -354,7 +349,7 @@ static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
__u16 moduleid, __u16 value, __u8 *data, int size);
static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
unsigned long addr, __u8 mask, __u8 byte);
unsigned long addr, u8 mask, u8 byte);
static int ti_download_firmware(struct ti_device *tdev);
@ -647,12 +642,11 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
struct urb *urb;
int port_number;
int status;
__u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINUOUS |
TI_PIPE_TIMEOUT_ENABLE |
(TI_TRANSFER_TIMEOUT << 2));
u16 open_settings;
if (tport == NULL)
return -ENODEV;
open_settings = (TI_PIPE_MODE_CONTINUOUS |
TI_PIPE_TIMEOUT_ENABLE |
(TI_TRANSFER_TIMEOUT << 2));
dev = port->serial->dev;
tdev = tport->tp_tdev;
@ -686,7 +680,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
if (tty)
ti_set_termios(tty, port, &tty->termios);
dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
status = ti_command_out_sync(tdev, TI_OPEN_PORT,
(__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
if (status) {
@ -695,7 +688,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
goto unlink_int_urb;
}
dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
status = ti_command_out_sync(tdev, TI_START_PORT,
(__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
if (status) {
@ -704,7 +696,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
goto unlink_int_urb;
}
dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
status = ti_command_out_sync(tdev, TI_PURGE_PORT,
(__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
if (status) {
@ -728,7 +719,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
if (tty)
ti_set_termios(tty, port, &tty->termios);
dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
status = ti_command_out_sync(tdev, TI_OPEN_PORT,
(__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
if (status) {
@ -737,7 +727,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
goto unlink_int_urb;
}
dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
status = ti_command_out_sync(tdev, TI_START_PORT,
(__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
if (status) {
@ -747,7 +736,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
}
/* start read urb */
dev_dbg(&port->dev, "%s - start read urb\n", __func__);
urb = port->read_urb;
if (!urb) {
dev_err(&port->dev, "%s - no read urb\n", __func__);
@ -773,7 +761,6 @@ unlink_int_urb:
usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
release_lock:
mutex_unlock(&tdev->td_open_close_lock);
dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
return status;
}
@ -789,8 +776,6 @@ static void ti_close(struct usb_serial_port *port)
tdev = usb_get_serial_data(port->serial);
tport = usb_get_serial_port_data(port);
if (tdev == NULL || tport == NULL)
return;
tport->tp_is_open = 0;
@ -803,7 +788,6 @@ static void ti_close(struct usb_serial_port *port)
port_number = port->port_number;
dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
(__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
if (status)
@ -830,11 +814,10 @@ static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
struct ti_port *tport = usb_get_serial_port_data(port);
if (count == 0) {
dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
return 0;
}
if (tport == NULL || !tport->tp_is_open)
if (!tport->tp_is_open)
return -ENODEV;
count = kfifo_in_locked(&port->write_fifo, data, count,
@ -852,9 +835,6 @@ static int ti_write_room(struct tty_struct *tty)
int room = 0;
unsigned long flags;
if (tport == NULL)
return 0;
spin_lock_irqsave(&tport->tp_lock, flags);
room = kfifo_avail(&port->write_fifo);
spin_unlock_irqrestore(&tport->tp_lock, flags);
@ -871,9 +851,6 @@ static int ti_chars_in_buffer(struct tty_struct *tty)
int chars = 0;
unsigned long flags;
if (tport == NULL)
return 0;
spin_lock_irqsave(&tport->tp_lock, flags);
chars = kfifo_len(&port->write_fifo);
spin_unlock_irqrestore(&tport->tp_lock, flags);
@ -900,9 +877,6 @@ static void ti_throttle(struct tty_struct *tty)
struct usb_serial_port *port = tty->driver_data;
struct ti_port *tport = usb_get_serial_port_data(port);
if (tport == NULL)
return;
if (I_IXOFF(tty) || C_CRTSCTS(tty))
ti_stop_read(tport, tty);
@ -915,9 +889,6 @@ static void ti_unthrottle(struct tty_struct *tty)
struct ti_port *tport = usb_get_serial_port_data(port);
int status;
if (tport == NULL)
return;
if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
status = ti_restart_read(tport, tty);
if (status)
@ -932,16 +903,11 @@ static int ti_ioctl(struct tty_struct *tty,
struct usb_serial_port *port = tty->driver_data;
struct ti_port *tport = usb_get_serial_port_data(port);
if (tport == NULL)
return -ENODEV;
switch (cmd) {
case TIOCGSERIAL:
dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
return ti_get_serial_info(tport,
(struct serial_struct __user *)arg);
case TIOCSSERIAL:
dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
return ti_set_serial_info(tty, tport,
(struct serial_struct __user *)arg);
}
@ -959,6 +925,8 @@ static void ti_set_termios(struct tty_struct *tty,
int status;
int port_number = port->port_number;
unsigned int mcr;
u16 wbaudrate;
u16 wflags = 0;
cflag = tty->termios.c_cflag;
iflag = tty->termios.c_iflag;
@ -967,21 +935,16 @@ static void ti_set_termios(struct tty_struct *tty,
dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
old_termios->c_cflag, old_termios->c_iflag);
if (tport == NULL)
return;
config = kmalloc(sizeof(*config), GFP_KERNEL);
if (!config)
return;
config->wFlags = 0;
/* these flags must be set */
config->wFlags |= TI_UART_ENABLE_MS_INTS;
config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
config->bUartMode = (__u8)(tport->tp_uart_mode);
wflags |= TI_UART_ENABLE_MS_INTS;
wflags |= TI_UART_ENABLE_AUTO_START_DMA;
config->bUartMode = tport->tp_uart_mode;
switch (cflag & CSIZE) {
switch (C_CSIZE(tty)) {
case CS5:
config->bDataBits = TI_UART_5_DATA_BITS;
break;
@ -1000,29 +963,29 @@ static void ti_set_termios(struct tty_struct *tty,
/* CMSPAR isn't supported by this driver */
tty->termios.c_cflag &= ~CMSPAR;
if (cflag & PARENB) {
if (cflag & PARODD) {
config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
if (C_PARENB(tty)) {
if (C_PARODD(tty)) {
wflags |= TI_UART_ENABLE_PARITY_CHECKING;
config->bParity = TI_UART_ODD_PARITY;
} else {
config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
wflags |= TI_UART_ENABLE_PARITY_CHECKING;
config->bParity = TI_UART_EVEN_PARITY;
}
} else {
config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
config->bParity = TI_UART_NO_PARITY;
}
if (cflag & CSTOPB)
if (C_CSTOPB(tty))
config->bStopBits = TI_UART_2_STOP_BITS;
else
config->bStopBits = TI_UART_1_STOP_BITS;
if (cflag & CRTSCTS) {
if (C_CRTSCTS(tty)) {
/* RTS flow control must be off to drop RTS for baud rate B0 */
if ((cflag & CBAUD) != B0)
config->wFlags |= TI_UART_ENABLE_RTS_IN;
config->wFlags |= TI_UART_ENABLE_CTS_OUT;
if ((C_BAUD(tty)) != B0)
wflags |= TI_UART_ENABLE_RTS_IN;
wflags |= TI_UART_ENABLE_CTS_OUT;
} else {
ti_restart_read(tport, tty);
}
@ -1032,34 +995,34 @@ static void ti_set_termios(struct tty_struct *tty,
config->cXoff = STOP_CHAR(tty);
if (I_IXOFF(tty))
config->wFlags |= TI_UART_ENABLE_X_IN;
wflags |= TI_UART_ENABLE_X_IN;
else
ti_restart_read(tport, tty);
if (I_IXON(tty))
config->wFlags |= TI_UART_ENABLE_X_OUT;
wflags |= TI_UART_ENABLE_X_OUT;
}
baud = tty_get_baud_rate(tty);
if (!baud)
baud = 9600;
if (tport->tp_tdev->td_is_3410)
config->wBaudRate = (__u16)((923077 + baud/2) / baud);
wbaudrate = (923077 + baud/2) / baud;
else
config->wBaudRate = (__u16)((461538 + baud/2) / baud);
wbaudrate = (461538 + baud/2) / baud;
/* FIXME: Should calculate resulting baud here and report it back */
if ((cflag & CBAUD) != B0)
if ((C_BAUD(tty)) != B0)
tty_encode_baud_rate(tty, baud, baud);
dev_dbg(&port->dev,
"%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
__func__, baud, config->wBaudRate, config->wFlags,
__func__, baud, wbaudrate, wflags,
config->bDataBits, config->bParity, config->bStopBits,
config->cXon, config->cXoff, config->bUartMode);
cpu_to_be16s(&config->wBaudRate);
cpu_to_be16s(&config->wFlags);
config->wBaudRate = cpu_to_be16(wbaudrate);
config->wFlags = cpu_to_be16(wflags);
status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
(__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
@ -1071,7 +1034,7 @@ static void ti_set_termios(struct tty_struct *tty,
/* SET_CONFIG asserts RTS and DTR, reset them correctly */
mcr = tport->tp_shadow_mcr;
/* if baud rate is B0, clear RTS and DTR */
if ((cflag & CBAUD) == B0)
if (C_BAUD(tty) == B0)
mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
status = ti_set_mcr(tport, mcr);
if (status)
@ -1092,9 +1055,6 @@ static int ti_tiocmget(struct tty_struct *tty)
unsigned int mcr;
unsigned long flags;
if (tport == NULL)
return -ENODEV;
spin_lock_irqsave(&tport->tp_lock, flags);
msr = tport->tp_msr;
mcr = tport->tp_shadow_mcr;
@ -1122,9 +1082,6 @@ static int ti_tiocmset(struct tty_struct *tty,
unsigned int mcr;
unsigned long flags;
if (tport == NULL)
return -ENODEV;
spin_lock_irqsave(&tport->tp_lock, flags);
mcr = tport->tp_shadow_mcr;
@ -1155,9 +1112,6 @@ static void ti_break(struct tty_struct *tty, int break_state)
dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
if (tport == NULL)
return;
status = ti_write_byte(port, tport->tp_tdev,
tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
@ -1189,7 +1143,7 @@ static void ti_interrupt_callback(struct urb *urb)
int function;
int status = urb->status;
int retval;
__u8 msr;
u8 msr;
switch (status) {
case 0:
@ -1198,11 +1152,9 @@ static void ti_interrupt_callback(struct urb *urb)
case -ENOENT:
case -ESHUTDOWN:
dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
tdev->td_urb_error = 1;
return;
default:
dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
tdev->td_urb_error = 1;
goto exit;
}
@ -1275,12 +1227,10 @@ static void ti_bulk_in_callback(struct urb *urb)
case -ENOENT:
case -ESHUTDOWN:
dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
tport->tp_tdev->td_urb_error = 1;
return;
default:
dev_err(dev, "%s - nonzero urb status, %d\n",
__func__, status);
tport->tp_tdev->td_urb_error = 1;
}
if (status == -EPIPE)
@ -1335,12 +1285,10 @@ static void ti_bulk_out_callback(struct urb *urb)
case -ENOENT:
case -ESHUTDOWN:
dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
tport->tp_tdev->td_urb_error = 1;
return;
default:
dev_err_console(port, "%s - nonzero urb status, %d\n",
__func__, status);
tport->tp_tdev->td_urb_error = 1;
}
/* send any buffered data */
@ -1490,7 +1438,6 @@ static int ti_get_serial_info(struct ti_port *tport,
ret_serial.type = PORT_16550A;
ret_serial.line = port->minor;
ret_serial.port = port->port_number;
ret_serial.flags = tport->tp_flags;
ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
ret_serial.closing_wait = cwait;
@ -1515,14 +1462,13 @@ static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
if (cwait != ASYNC_CLOSING_WAIT_NONE)
cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
tport->tp_port->port.closing_wait = cwait;
return 0;
}
static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
{
struct async_icount *icount;
struct tty_struct *tty;
@ -1634,8 +1580,8 @@ static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
static int ti_write_byte(struct usb_serial_port *port,
struct ti_device *tdev, unsigned long addr,
__u8 mask, __u8 byte)
struct ti_device *tdev, unsigned long addr,
u8 mask, u8 byte)
{
int status;
unsigned int size;
@ -1679,11 +1625,10 @@ static int ti_do_download(struct usb_device *dev, int pipe,
int len;
for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
cs = (__u8)(cs + buffer[pos]);
cs = (u8)(cs + buffer[pos]);
header = (struct ti_firmware_header *)buffer;
header->wLength = cpu_to_le16((__u16)(size
- sizeof(struct ti_firmware_header)));
header->wLength = cpu_to_le16(size - sizeof(*header));
header->bCheckSum = cs;
dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
@ -1701,7 +1646,7 @@ static int ti_download_firmware(struct ti_device *tdev)
{
int status;
int buffer_size;
__u8 *buffer;
u8 *buffer;
struct usb_device *dev = tdev->td_serial->dev;
unsigned int pipe = usb_sndbulkpipe(dev,
tdev->td_serial->port[0]->bulk_out_endpointAddress);