aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/serial/cp210x.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/serial/cp210x.c')
-rw-r--r--drivers/usb/serial/cp210x.c479
1 files changed, 270 insertions, 209 deletions
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 735ea03157a..330df5ce435 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -24,10 +24,6 @@
#include <linux/uaccess.h>
#include <linux/usb/serial.h>
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v0.09"
#define DRIVER_DESC "Silicon Labs CP210x RS232 serial adaptor driver"
/*
@@ -35,29 +31,29 @@
*/
static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *);
static void cp210x_close(struct usb_serial_port *);
-static void cp210x_get_termios(struct tty_struct *,
- struct usb_serial_port *port);
+static void cp210x_get_termios(struct tty_struct *, struct usb_serial_port *);
static void cp210x_get_termios_port(struct usb_serial_port *port,
unsigned int *cflagp, unsigned int *baudp);
+static void cp210x_change_speed(struct tty_struct *, struct usb_serial_port *,
+ struct ktermios *);
static void cp210x_set_termios(struct tty_struct *, struct usb_serial_port *,
struct ktermios*);
-static int cp210x_tiocmget(struct tty_struct *, struct file *);
-static int cp210x_tiocmset(struct tty_struct *, struct file *,
- unsigned int, unsigned int);
-static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *,
+static int cp210x_tiocmget(struct tty_struct *);
+static int cp210x_tiocmset(struct tty_struct *, unsigned int, unsigned int);
+static int cp210x_tiocmset_port(struct usb_serial_port *port,
unsigned int, unsigned int);
static void cp210x_break_ctl(struct tty_struct *, int);
static int cp210x_startup(struct usb_serial *);
+static void cp210x_release(struct usb_serial *);
static void cp210x_dtr_rts(struct usb_serial_port *p, int on);
-static int debug;
-
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x045B, 0x0053) }, /* Renesas RX610 RX-Stick */
{ USB_DEVICE(0x0471, 0x066A) }, /* AKTAKOM ACE-1001 cable */
{ USB_DEVICE(0x0489, 0xE000) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
{ USB_DEVICE(0x0489, 0xE003) }, /* Pirelli Broadband S.p.A, DP-L10 SIP/GSM Mobile */
{ USB_DEVICE(0x0745, 0x1000) }, /* CipherLab USB CCD Barcode Scanner 1000 */
+ { USB_DEVICE(0x0846, 0x1100) }, /* NetGear Managed Switch M4100 series, M5300 series, M7100 series */
{ USB_DEVICE(0x08e6, 0x5501) }, /* Gemalto Prox-PU/CU contactless smartcard reader */
{ USB_DEVICE(0x08FD, 0x000A) }, /* Digianswer A/S , ZigBee/802.15.4 MAC Device */
{ USB_DEVICE(0x0BED, 0x1100) }, /* MEI (TM) Cashflow-SC Bill/Voucher Acceptor */
@@ -65,6 +61,7 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x0FCF, 0x1003) }, /* Dynastream ANT development board */
{ USB_DEVICE(0x0FCF, 0x1004) }, /* Dynastream ANT2USB */
{ USB_DEVICE(0x0FCF, 0x1006) }, /* Dynastream ANT development board */
+ { USB_DEVICE(0x0FDE, 0xCA05) }, /* OWL Wireless Electricity Monitor CM-160 */
{ USB_DEVICE(0x10A6, 0xAA26) }, /* Knock-off DCU-11 cable */
{ USB_DEVICE(0x10AB, 0x10C5) }, /* Siemens MC60 Cable */
{ USB_DEVICE(0x10B5, 0xAC70) }, /* Nokia CA-42 USB */
@@ -80,6 +77,7 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x10C4, 0x8066) }, /* Argussoft In-System Programmer */
{ USB_DEVICE(0x10C4, 0x806F) }, /* IMS USB to RS422 Converter Cable */
{ USB_DEVICE(0x10C4, 0x807A) }, /* Crumb128 board */
+ { USB_DEVICE(0x10C4, 0x80C4) }, /* Cygnal Integrated Products, Inc., Optris infrared thermometer */
{ USB_DEVICE(0x10C4, 0x80CA) }, /* Degree Controls Inc */
{ USB_DEVICE(0x10C4, 0x80DD) }, /* Tracient RFID */
{ USB_DEVICE(0x10C4, 0x80F6) }, /* Suunto sports instrument */
@@ -88,11 +86,14 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */
{ USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */
{ USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */
+ { USB_DEVICE(0x2405, 0x0003) }, /* West Mountain Radio RIGblaster Advantage */
{ USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */
{ USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */
+ { USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */
{ USB_DEVICE(0x10C4, 0x818B) }, /* AVIT Research USB to TTL */
{ USB_DEVICE(0x10C4, 0x819F) }, /* MJS USB Toslink Switcher */
{ USB_DEVICE(0x10C4, 0x81A6) }, /* ThinkOptics WavIt */
+ { USB_DEVICE(0x10C4, 0x81A9) }, /* Multiplex RC Interface */
{ USB_DEVICE(0x10C4, 0x81AC) }, /* MSD Dash Hawk */
{ USB_DEVICE(0x10C4, 0x81AD) }, /* INSYS USB Modem */
{ USB_DEVICE(0x10C4, 0x81C8) }, /* Lipowsky Industrie Elektronik GmbH, Baby-JTAG */
@@ -102,8 +103,9 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x10C4, 0x81F2) }, /* C1007 HF band RFID controller */
{ USB_DEVICE(0x10C4, 0x8218) }, /* Lipowsky Industrie Elektronik GmbH, HARP-1 */
{ USB_DEVICE(0x10C4, 0x822B) }, /* Modem EDGE(GSM) Comander 2 */
- { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demostration module */
- { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesys ETRX2USB */
+ { USB_DEVICE(0x10C4, 0x826B) }, /* Cygnal Integrated Products, Inc., Fasttrax GPS demonstration module */
+ { USB_DEVICE(0x10C4, 0x8281) }, /* Nanotec Plug & Drive */
+ { USB_DEVICE(0x10C4, 0x8293) }, /* Telegesis ETRX2USB */
{ USB_DEVICE(0x10C4, 0x82F9) }, /* Procyon AVS */
{ USB_DEVICE(0x10C4, 0x8341) }, /* Siemens MC35PU GPRS Modem */
{ USB_DEVICE(0x10C4, 0x8382) }, /* Cygnal Integrated Products, Inc. */
@@ -113,8 +115,17 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x10C4, 0x8418) }, /* IRZ Automation Teleport SG-10 GSM/GPRS Modem */
{ USB_DEVICE(0x10C4, 0x846E) }, /* BEI USB Sensor Interface (VCP) */
{ USB_DEVICE(0x10C4, 0x8477) }, /* Balluff RFID */
+ { USB_DEVICE(0x10C4, 0x85EA) }, /* AC-Services IBUS-IF */
+ { USB_DEVICE(0x10C4, 0x85EB) }, /* AC-Services CIS-IBUS */
+ { USB_DEVICE(0x10C4, 0x85F8) }, /* Virtenio Preon32 */
+ { USB_DEVICE(0x10C4, 0x8664) }, /* AC-Services CAN-IF */
+ { USB_DEVICE(0x10C4, 0x8665) }, /* AC-Services OBD-IF */
+ { USB_DEVICE(0x10C4, 0x88A4) }, /* MMB Networks ZigBee USB Device */
+ { USB_DEVICE(0x10C4, 0x88A5) }, /* Planet Innovation Ingeni ZigBee USB Device */
{ USB_DEVICE(0x10C4, 0xEA60) }, /* Silicon Labs factory default */
{ USB_DEVICE(0x10C4, 0xEA61) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA70) }, /* Silicon Labs factory default */
+ { USB_DEVICE(0x10C4, 0xEA80) }, /* Silicon Labs factory default */
{ USB_DEVICE(0x10C4, 0xEA71) }, /* Infinity GPS-MIC-1 Radio Monophone */
{ USB_DEVICE(0x10C4, 0xF001) }, /* Elan Digital Systems USBscope50 */
{ USB_DEVICE(0x10C4, 0xF002) }, /* Elan Digital Systems USBwave12 */
@@ -124,36 +135,65 @@ static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */
{ USB_DEVICE(0x13AD, 0x9999) }, /* Baltech card reader */
{ USB_DEVICE(0x1555, 0x0004) }, /* Owen AC4 USB-RS485 Converter */
+ { USB_DEVICE(0x166A, 0x0201) }, /* Clipsal 5500PACA C-Bus Pascal Automation Controller */
+ { USB_DEVICE(0x166A, 0x0301) }, /* Clipsal 5800PC C-Bus Wireless PC Interface */
{ USB_DEVICE(0x166A, 0x0303) }, /* Clipsal 5500PCU C-Bus USB interface */
+ { USB_DEVICE(0x166A, 0x0304) }, /* Clipsal 5000CT2 C-Bus Black and White Touchscreen */
+ { USB_DEVICE(0x166A, 0x0305) }, /* Clipsal C-5000CT2 C-Bus Spectrum Colour Touchscreen */
+ { USB_DEVICE(0x166A, 0x0401) }, /* Clipsal L51xx C-Bus Architectural Dimmer */
+ { USB_DEVICE(0x166A, 0x0101) }, /* Clipsal 5560884 C-Bus Multi-room Audio Matrix Switcher */
{ USB_DEVICE(0x16D6, 0x0001) }, /* Jablotron serial interface */
{ USB_DEVICE(0x16DC, 0x0010) }, /* W-IE-NE-R Plein & Baus GmbH PL512 Power Supply */
{ USB_DEVICE(0x16DC, 0x0011) }, /* W-IE-NE-R Plein & Baus GmbH RCM Remote Control for MARATON Power Supply */
{ USB_DEVICE(0x16DC, 0x0012) }, /* W-IE-NE-R Plein & Baus GmbH MPOD Multi Channel Power Supply */
{ USB_DEVICE(0x16DC, 0x0015) }, /* W-IE-NE-R Plein & Baus GmbH CML Control, Monitoring and Data Logger */
+ { USB_DEVICE(0x17A8, 0x0001) }, /* Kamstrup Optical Eye/3-wire */
+ { USB_DEVICE(0x17A8, 0x0005) }, /* Kamstrup M-Bus Master MultiPort 250D */
{ USB_DEVICE(0x17F4, 0xAAAA) }, /* Wavesense Jazz blood glucose meter */
{ USB_DEVICE(0x1843, 0x0200) }, /* Vaisala USB Instrument Cable */
{ USB_DEVICE(0x18EF, 0xE00F) }, /* ELV USB-I2C-Interface */
+ { USB_DEVICE(0x1ADB, 0x0001) }, /* Schweitzer Engineering C662 Cable */
+ { USB_DEVICE(0x1B1C, 0x1C00) }, /* Corsair USB Dongle */
{ USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */
+ { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */
+ { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */
+ { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */
+ { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */
+ { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */
+ { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */
+ { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */
+ { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */
+ { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */
+ { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */
+ { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */
+ { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */
+ { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */
+ { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */
+ { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */
+ { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */
+ { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */
+ { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */
+ { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */
+ { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */
+ { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */
+ { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */
+ { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */
+ { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */
{ USB_DEVICE(0x413C, 0x9500) }, /* DW700 GPS USB interface */
{ } /* Terminating Entry */
};
MODULE_DEVICE_TABLE(usb, id_table);
-static struct usb_driver cp210x_driver = {
- .name = "cp210x",
- .probe = usb_serial_probe,
- .disconnect = usb_serial_disconnect,
- .id_table = id_table,
- .no_dynamic_id = 1,
+struct cp210x_serial_private {
+ __u8 bInterfaceNumber;
};
static struct usb_serial_driver cp210x_device = {
.driver = {
.owner = THIS_MODULE,
- .name = "cp210x",
+ .name = "cp210x",
},
- .usb_driver = &cp210x_driver,
.id_table = id_table,
.num_ports = 1,
.bulk_in_size = 256,
@@ -162,15 +202,22 @@ static struct usb_serial_driver cp210x_device = {
.close = cp210x_close,
.break_ctl = cp210x_break_ctl,
.set_termios = cp210x_set_termios,
- .tiocmget = cp210x_tiocmget,
+ .tiocmget = cp210x_tiocmget,
.tiocmset = cp210x_tiocmset,
.attach = cp210x_startup,
+ .release = cp210x_release,
.dtr_rts = cp210x_dtr_rts
};
+static struct usb_serial_driver * const serial_drivers[] = {
+ &cp210x_device, NULL
+};
+
/* Config request types */
-#define REQTYPE_HOST_TO_DEVICE 0x41
-#define REQTYPE_DEVICE_TO_HOST 0xc1
+#define REQTYPE_HOST_TO_INTERFACE 0x41
+#define REQTYPE_INTERFACE_TO_HOST 0xc1
+#define REQTYPE_HOST_TO_DEVICE 0x40
+#define REQTYPE_DEVICE_TO_HOST 0xc0
/* Config request codes */
#define CP210X_IFC_ENABLE 0x00
@@ -197,6 +244,8 @@ static struct usb_serial_driver cp210x_device = {
#define CP210X_EMBED_EVENTS 0x15
#define CP210X_GET_EVENTSTATE 0x16
#define CP210X_SET_CHARS 0x19
+#define CP210X_GET_BAUDRATE 0x1D
+#define CP210X_SET_BAUDRATE 0x1E
/* CP210X_IFC_ENABLE */
#define UART_ENABLE 0x0001
@@ -250,22 +299,22 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
unsigned int *data, int size)
{
struct usb_serial *serial = port->serial;
+ struct cp210x_serial_private *spriv = usb_get_serial_data(serial);
__le32 *buf;
int result, i, length;
/* Number of integers required to contain the array */
- length = (((size - 1) | 3) + 1)/4;
+ length = (((size - 1) | 3) + 1) / 4;
buf = kcalloc(length, sizeof(__le32), GFP_KERNEL);
- if (!buf) {
- dev_err(&port->dev, "%s - out of memory.\n", __func__);
+ if (!buf)
return -ENOMEM;
- }
/* Issue the request, attempting to read 'size' bytes */
result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- request, REQTYPE_DEVICE_TO_HOST, 0x0000,
- 0, buf, size, 300);
+ request, REQTYPE_INTERFACE_TO_HOST, 0x0000,
+ spriv->bInterfaceNumber, buf, size,
+ USB_CTRL_GET_TIMEOUT);
/* Convert data into an array of integers */
for (i = 0; i < length; i++)
@@ -274,10 +323,12 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request,
kfree(buf);
if (result != size) {
- dbg("%s - Unable to send config request, "
- "request=0x%x size=%d result=%d\n",
- __func__, request, size, result);
- return -EPROTO;
+ dev_dbg(&port->dev, "%s - Unable to send config request, request=0x%x size=%d result=%d\n",
+ __func__, request, size, result);
+ if (result > 0)
+ result = -EPROTO;
+
+ return result;
}
return 0;
@@ -293,18 +344,16 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
unsigned int *data, int size)
{
struct usb_serial *serial = port->serial;
+ struct cp210x_serial_private *spriv = usb_get_serial_data(serial);
__le32 *buf;
int result, i, length;
/* Number of integers required to contain the array */
- length = (((size - 1) | 3) + 1)/4;
+ length = (((size - 1) | 3) + 1) / 4;
buf = kmalloc(length * sizeof(__le32), GFP_KERNEL);
- if (!buf) {
- dev_err(&port->dev, "%s - out of memory.\n",
- __func__);
+ if (!buf)
return -ENOMEM;
- }
/* Array of integers into bytes */
for (i = 0; i < length; i++)
@@ -313,22 +362,26 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request,
if (size > 2) {
result = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
- request, REQTYPE_HOST_TO_DEVICE, 0x0000,
- 0, buf, size, 300);
+ request, REQTYPE_HOST_TO_INTERFACE, 0x0000,
+ spriv->bInterfaceNumber, buf, size,
+ USB_CTRL_SET_TIMEOUT);
} else {
result = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
- request, REQTYPE_HOST_TO_DEVICE, data[0],
- 0, NULL, 0, 300);
+ request, REQTYPE_HOST_TO_INTERFACE, data[0],
+ spriv->bInterfaceNumber, NULL, 0,
+ USB_CTRL_SET_TIMEOUT);
}
kfree(buf);
if ((size > 2 && result != size) || result < 0) {
- dbg("%s - Unable to send request, "
- "request=0x%x size=%d result=%d\n",
- __func__, request, size, result);
- return -EPROTO;
+ dev_dbg(&port->dev, "%s - Unable to send request, request=0x%x size=%d result=%d\n",
+ __func__, request, size, result);
+ if (result > 0)
+ result = -EPROTO;
+
+ return result;
}
return 0;
@@ -349,9 +402,10 @@ static inline int cp210x_set_config_single(struct usb_serial_port *port,
* cp210x_quantise_baudrate
* Quantises the baud rate as per AN205 Table 1
*/
-static unsigned int cp210x_quantise_baudrate(unsigned int baud) {
- if (baud <= 56) baud = 0;
- else if (baud <= 300) baud = 300;
+static unsigned int cp210x_quantise_baudrate(unsigned int baud)
+{
+ if (baud <= 300)
+ baud = 300;
else if (baud <= 600) baud = 600;
else if (baud <= 1200) baud = 1200;
else if (baud <= 1800) baud = 1800;
@@ -379,10 +433,10 @@ static unsigned int cp210x_quantise_baudrate(unsigned int baud) {
else if (baud <= 491520) baud = 460800;
else if (baud <= 567138) baud = 500000;
else if (baud <= 670254) baud = 576000;
- else if (baud <= 1053257) baud = 921600;
- else if (baud <= 1474560) baud = 1228800;
- else if (baud <= 2457600) baud = 1843200;
- else baud = 3686400;
+ else if (baud < 1000000)
+ baud = 921600;
+ else if (baud > 2000000)
+ baud = 2000000;
return baud;
}
@@ -390,33 +444,27 @@ static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port)
{
int result;
- dbg("%s - port %d", __func__, port->number);
-
- if (cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_ENABLE)) {
- dev_err(&port->dev, "%s - Unable to enable UART\n",
- __func__);
- return -EPROTO;
- }
-
- result = usb_serial_generic_open(tty, port);
- if (result)
+ result = cp210x_set_config_single(port, CP210X_IFC_ENABLE,
+ UART_ENABLE);
+ if (result) {
+ dev_err(&port->dev, "%s - Unable to enable UART\n", __func__);
return result;
+ }
/* Configure the termios structure */
cp210x_get_termios(tty, port);
- return 0;
+
+ /* The baud rate must be initialised on cp2104 */
+ if (tty)
+ cp210x_change_speed(tty, port, NULL);
+
+ return usb_serial_generic_open(tty, port);
}
static void cp210x_close(struct usb_serial_port *port)
{
- dbg("%s - port %d", __func__, port->number);
-
usb_serial_generic_close(port);
-
- mutex_lock(&port->serial->disc_mutex);
- if (!port->serial->disconnected)
- cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE);
- mutex_unlock(&port->serial->disc_mutex);
+ cp210x_set_config_single(port, CP210X_IFC_ENABLE, UART_DISABLE);
}
/*
@@ -432,11 +480,9 @@ static void cp210x_get_termios(struct tty_struct *tty,
if (tty) {
cp210x_get_termios_port(tty->driver_data,
- &tty->termios->c_cflag, &baud);
+ &tty->termios.c_cflag, &baud);
tty_encode_baud_rate(tty, baud, baud);
- }
-
- else {
+ } else {
unsigned int cflag;
cflag = 0;
cp210x_get_termios_port(port, &cflag, &baud);
@@ -450,18 +496,14 @@ static void cp210x_get_termios(struct tty_struct *tty,
static void cp210x_get_termios_port(struct usb_serial_port *port,
unsigned int *cflagp, unsigned int *baudp)
{
+ struct device *dev = &port->dev;
unsigned int cflag, modem_ctl[4];
unsigned int baud;
unsigned int bits;
- dbg("%s - port %d", __func__, port->number);
-
- cp210x_get_config(port, CP210X_GET_BAUDDIV, &baud, 2);
- /* Convert to baudrate */
- if (baud)
- baud = cp210x_quantise_baudrate((BAUD_RATE_GEN_FREQ + baud/2)/ baud);
+ cp210x_get_config(port, CP210X_GET_BAUDRATE, &baud, 4);
- dbg("%s - baud rate = %d", __func__, baud);
+ dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud);
*baudp = baud;
cflag = *cflagp;
@@ -470,31 +512,30 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
cflag &= ~CSIZE;
switch (bits & BITS_DATA_MASK) {
case BITS_DATA_5:
- dbg("%s - data bits = 5", __func__);
+ dev_dbg(dev, "%s - data bits = 5\n", __func__);
cflag |= CS5;
break;
case BITS_DATA_6:
- dbg("%s - data bits = 6", __func__);
+ dev_dbg(dev, "%s - data bits = 6\n", __func__);
cflag |= CS6;
break;
case BITS_DATA_7:
- dbg("%s - data bits = 7", __func__);
+ dev_dbg(dev, "%s - data bits = 7\n", __func__);
cflag |= CS7;
break;
case BITS_DATA_8:
- dbg("%s - data bits = 8", __func__);
+ dev_dbg(dev, "%s - data bits = 8\n", __func__);
cflag |= CS8;
break;
case BITS_DATA_9:
- dbg("%s - data bits = 9 (not supported, using 8 data bits)",
- __func__);
+ dev_dbg(dev, "%s - data bits = 9 (not supported, using 8 data bits)\n", __func__);
cflag |= CS8;
bits &= ~BITS_DATA_MASK;
bits |= BITS_DATA_8;
cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
break;
default:
- dbg("%s - Unknown number of data bits, using 8", __func__);
+ dev_dbg(dev, "%s - Unknown number of data bits, using 8\n", __func__);
cflag |= CS8;
bits &= ~BITS_DATA_MASK;
bits |= BITS_DATA_8;
@@ -504,34 +545,29 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
switch (bits & BITS_PARITY_MASK) {
case BITS_PARITY_NONE:
- dbg("%s - parity = NONE", __func__);
+ dev_dbg(dev, "%s - parity = NONE\n", __func__);
cflag &= ~PARENB;
break;
case BITS_PARITY_ODD:
- dbg("%s - parity = ODD", __func__);
+ dev_dbg(dev, "%s - parity = ODD\n", __func__);
cflag |= (PARENB|PARODD);
break;
case BITS_PARITY_EVEN:
- dbg("%s - parity = EVEN", __func__);
+ dev_dbg(dev, "%s - parity = EVEN\n", __func__);
cflag &= ~PARODD;
cflag |= PARENB;
break;
case BITS_PARITY_MARK:
- dbg("%s - parity = MARK (not supported, disabling parity)",
- __func__);
- cflag &= ~PARENB;
- bits &= ~BITS_PARITY_MASK;
- cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
+ dev_dbg(dev, "%s - parity = MARK\n", __func__);
+ cflag |= (PARENB|PARODD|CMSPAR);
break;
case BITS_PARITY_SPACE:
- dbg("%s - parity = SPACE (not supported, disabling parity)",
- __func__);
- cflag &= ~PARENB;
- bits &= ~BITS_PARITY_MASK;
- cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
+ dev_dbg(dev, "%s - parity = SPACE\n", __func__);
+ cflag &= ~PARODD;
+ cflag |= (PARENB|CMSPAR);
break;
default:
- dbg("%s - Unknown parity mode, disabling parity", __func__);
+ dev_dbg(dev, "%s - Unknown parity mode, disabling parity\n", __func__);
cflag &= ~PARENB;
bits &= ~BITS_PARITY_MASK;
cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
@@ -541,21 +577,19 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
cflag &= ~CSTOPB;
switch (bits & BITS_STOP_MASK) {
case BITS_STOP_1:
- dbg("%s - stop bits = 1", __func__);
+ dev_dbg(dev, "%s - stop bits = 1\n", __func__);
break;
case BITS_STOP_1_5:
- dbg("%s - stop bits = 1.5 (not supported, using 1 stop bit)",
- __func__);
+ dev_dbg(dev, "%s - stop bits = 1.5 (not supported, using 1 stop bit)\n", __func__);
bits &= ~BITS_STOP_MASK;
cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
break;
case BITS_STOP_2:
- dbg("%s - stop bits = 2", __func__);
+ dev_dbg(dev, "%s - stop bits = 2\n", __func__);
cflag |= CSTOPB;
break;
default:
- dbg("%s - Unknown number of stop bits, using 1 stop bit",
- __func__);
+ dev_dbg(dev, "%s - Unknown number of stop bits, using 1 stop bit\n", __func__);
bits &= ~BITS_STOP_MASK;
cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2);
break;
@@ -563,45 +597,82 @@ static void cp210x_get_termios_port(struct usb_serial_port *port,
cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16);
if (modem_ctl[0] & 0x0008) {
- dbg("%s - flow control = CRTSCTS", __func__);
+ dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__);
cflag |= CRTSCTS;
} else {
- dbg("%s - flow control = NONE", __func__);
+ dev_dbg(dev, "%s - flow control = NONE\n", __func__);
cflag &= ~CRTSCTS;
}
*cflagp = cflag;
}
+/*
+ * CP2101 supports the following baud rates:
+ *
+ * 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800,
+ * 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600
+ *
+ * CP2102 and CP2103 support the following additional rates:
+ *
+ * 4000, 16000, 51200, 64000, 76800, 153600, 250000, 256000, 500000,
+ * 576000
+ *
+ * The device will map a requested rate to a supported one, but the result
+ * of requests for rates greater than 1053257 is undefined (see AN205).
+ *
+ * CP2104, CP2105 and CP2110 support most rates up to 2M, 921k and 1M baud,
+ * respectively, with an error less than 1%. The actual rates are determined
+ * by
+ *
+ * div = round(freq / (2 x prescale x request))
+ * actual = freq / (2 x prescale x div)
+ *
+ * For CP2104 and CP2105 freq is 48Mhz and prescale is 4 for request <= 365bps
+ * or 1 otherwise.
+ * For CP2110 freq is 24Mhz and prescale is 4 for request <= 300bps or 1
+ * otherwise.
+ */
+static void cp210x_change_speed(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old_termios)
+{
+ u32 baud;
+
+ baud = tty->termios.c_ospeed;
+
+ /* This maps the requested rate to a rate valid on cp2102 or cp2103,
+ * or to an arbitrary rate in [1M,2M].
+ *
+ * NOTE: B0 is not implemented.
+ */
+ baud = cp210x_quantise_baudrate(baud);
+
+ dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud);
+ if (cp210x_set_config(port, CP210X_SET_BAUDRATE, &baud,
+ sizeof(baud))) {
+ dev_warn(&port->dev, "failed to set baud rate to %u\n", baud);
+ if (old_termios)
+ baud = old_termios->c_ospeed;
+ else
+ baud = 9600;
+ }
+
+ tty_encode_baud_rate(tty, baud, baud);
+}
+
static void cp210x_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
+ struct device *dev = &port->dev;
unsigned int cflag, old_cflag;
- unsigned int baud = 0, bits;
+ unsigned int bits;
unsigned int modem_ctl[4];
- dbg("%s - port %d", __func__, port->number);
-
- if (!tty)
- return;
-
- tty->termios->c_cflag &= ~CMSPAR;
- cflag = tty->termios->c_cflag;
+ cflag = tty->termios.c_cflag;
old_cflag = old_termios->c_cflag;
- baud = cp210x_quantise_baudrate(tty_get_baud_rate(tty));
-
- /* If the baud rate is to be updated*/
- if (baud != tty_termios_baud_rate(old_termios) && baud != 0) {
- dbg("%s - Setting baud rate to %d baud", __func__,
- baud);
- if (cp210x_set_config_single(port, CP210X_SET_BAUDDIV,
- ((BAUD_RATE_GEN_FREQ + baud/2) / baud))) {
- dbg("Baud rate requested not supported by device");
- baud = tty_termios_baud_rate(old_termios);
- }
- }
- /* Report back the resulting baud rate */
- tty_encode_baud_rate(tty, baud, baud);
+
+ if (tty->termios.c_ospeed != old_termios->c_ospeed)
+ cp210x_change_speed(tty, port, old_termios);
/* If the number of data bits is to be updated */
if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
@@ -610,51 +681,58 @@ static void cp210x_set_termios(struct tty_struct *tty,
switch (cflag & CSIZE) {
case CS5:
bits |= BITS_DATA_5;
- dbg("%s - data bits = 5", __func__);
+ dev_dbg(dev, "%s - data bits = 5\n", __func__);
break;
case CS6:
bits |= BITS_DATA_6;
- dbg("%s - data bits = 6", __func__);
+ dev_dbg(dev, "%s - data bits = 6\n", __func__);
break;
case CS7:
bits |= BITS_DATA_7;
- dbg("%s - data bits = 7", __func__);
+ dev_dbg(dev, "%s - data bits = 7\n", __func__);
break;
case CS8:
bits |= BITS_DATA_8;
- dbg("%s - data bits = 8", __func__);
+ dev_dbg(dev, "%s - data bits = 8\n", __func__);
break;
/*case CS9:
bits |= BITS_DATA_9;
- dbg("%s - data bits = 9", __func__);
+ dev_dbg(dev, "%s - data bits = 9\n", __func__);
break;*/
default:
- dbg("cp210x driver does not "
- "support the number of bits requested,"
- " using 8 bit mode\n");
- bits |= BITS_DATA_8;
- break;
+ dev_dbg(dev, "cp210x driver does not support the number of bits requested, using 8 bit mode\n");
+ bits |= BITS_DATA_8;
+ break;
}
if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))
- dbg("Number of data bits requested "
- "not supported by device\n");
+ dev_dbg(dev, "Number of data bits requested not supported by device\n");
}
- if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))) {
+ if ((cflag & (PARENB|PARODD|CMSPAR)) !=
+ (old_cflag & (PARENB|PARODD|CMSPAR))) {
cp210x_get_config(port, CP210X_GET_LINE_CTL, &bits, 2);
bits &= ~BITS_PARITY_MASK;
if (cflag & PARENB) {
- if (cflag & PARODD) {
- bits |= BITS_PARITY_ODD;
- dbg("%s - parity = ODD", __func__);
+ if (cflag & CMSPAR) {
+ if (cflag & PARODD) {
+ bits |= BITS_PARITY_MARK;
+ dev_dbg(dev, "%s - parity = MARK\n", __func__);
+ } else {
+ bits |= BITS_PARITY_SPACE;
+ dev_dbg(dev, "%s - parity = SPACE\n", __func__);
+ }
} else {
- bits |= BITS_PARITY_EVEN;
- dbg("%s - parity = EVEN", __func__);
+ if (cflag & PARODD) {
+ bits |= BITS_PARITY_ODD;
+ dev_dbg(dev, "%s - parity = ODD\n", __func__);
+ } else {
+ bits |= BITS_PARITY_EVEN;
+ dev_dbg(dev, "%s - parity = EVEN\n", __func__);
+ }
}
}
if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))
- dbg("Parity mode not supported "
- "by device\n");
+ dev_dbg(dev, "Parity mode not supported by device\n");
}
if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) {
@@ -662,56 +740,53 @@ static void cp210x_set_termios(struct tty_struct *tty,
bits &= ~BITS_STOP_MASK;
if (cflag & CSTOPB) {
bits |= BITS_STOP_2;
- dbg("%s - stop bits = 2", __func__);
+ dev_dbg(dev, "%s - stop bits = 2\n", __func__);
} else {
bits |= BITS_STOP_1;
- dbg("%s - stop bits = 1", __func__);
+ dev_dbg(dev, "%s - stop bits = 1\n", __func__);
}
if (cp210x_set_config(port, CP210X_SET_LINE_CTL, &bits, 2))
- dbg("Number of stop bits requested "
- "not supported by device\n");
+ dev_dbg(dev, "Number of stop bits requested not supported by device\n");
}
if ((cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
cp210x_get_config(port, CP210X_GET_FLOW, modem_ctl, 16);
- dbg("%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x",
- __func__, modem_ctl[0], modem_ctl[1],
- modem_ctl[2], modem_ctl[3]);
+ dev_dbg(dev, "%s - read modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n",
+ __func__, modem_ctl[0], modem_ctl[1],
+ modem_ctl[2], modem_ctl[3]);
if (cflag & CRTSCTS) {
modem_ctl[0] &= ~0x7B;
modem_ctl[0] |= 0x09;
modem_ctl[1] = 0x80;
- dbg("%s - flow control = CRTSCTS", __func__);
+ dev_dbg(dev, "%s - flow control = CRTSCTS\n", __func__);
} else {
modem_ctl[0] &= ~0x7B;
modem_ctl[0] |= 0x01;
modem_ctl[1] |= 0x40;
- dbg("%s - flow control = NONE", __func__);
+ dev_dbg(dev, "%s - flow control = NONE\n", __func__);
}
- dbg("%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x",
- __func__, modem_ctl[0], modem_ctl[1],
- modem_ctl[2], modem_ctl[3]);
+ dev_dbg(dev, "%s - write modem controls = 0x%.4x 0x%.4x 0x%.4x 0x%.4x\n",
+ __func__, modem_ctl[0], modem_ctl[1],
+ modem_ctl[2], modem_ctl[3]);
cp210x_set_config(port, CP210X_SET_FLOW, modem_ctl, 16);
}
}
-static int cp210x_tiocmset (struct tty_struct *tty, struct file *file,
+static int cp210x_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = tty->driver_data;
- return cp210x_tiocmset_port(port, file, set, clear);
+ return cp210x_tiocmset_port(port, set, clear);
}
-static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file,
+static int cp210x_tiocmset_port(struct usb_serial_port *port,
unsigned int set, unsigned int clear)
{
unsigned int control = 0;
- dbg("%s - port %d", __func__, port->number);
-
if (set & TIOCM_RTS) {
control |= CONTROL_RTS;
control |= CONTROL_WRITE_RTS;
@@ -729,7 +804,7 @@ static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file,
control |= CONTROL_WRITE_DTR;
}
- dbg("%s - control = 0x%.4x", __func__, control);
+ dev_dbg(&port->dev, "%s - control = 0x%.4x\n", __func__, control);
return cp210x_set_config(port, CP210X_SET_MHS, &control, 2);
}
@@ -737,19 +812,17 @@ static int cp210x_tiocmset_port(struct usb_serial_port *port, struct file *file,
static void cp210x_dtr_rts(struct usb_serial_port *p, int on)
{
if (on)
- cp210x_tiocmset_port(p, NULL, TIOCM_DTR|TIOCM_RTS, 0);
+ cp210x_tiocmset_port(p, TIOCM_DTR|TIOCM_RTS, 0);
else
- cp210x_tiocmset_port(p, NULL, 0, TIOCM_DTR|TIOCM_RTS);
+ cp210x_tiocmset_port(p, 0, TIOCM_DTR|TIOCM_RTS);
}
-static int cp210x_tiocmget (struct tty_struct *tty, struct file *file)
+static int cp210x_tiocmget(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
unsigned int control;
int result;
- dbg("%s - port %d", __func__, port->number);
-
cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1);
result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0)
@@ -759,66 +832,54 @@ static int cp210x_tiocmget (struct tty_struct *tty, struct file *file)
|((control & CONTROL_RING)? TIOCM_RI : 0)
|((control & CONTROL_DCD) ? TIOCM_CD : 0);
- dbg("%s - control = 0x%.2x", __func__, control);
+ dev_dbg(&port->dev, "%s - control = 0x%.2x\n", __func__, control);
return result;
}
-static void cp210x_break_ctl (struct tty_struct *tty, int break_state)
+static void cp210x_break_ctl(struct tty_struct *tty, int break_state)
{
struct usb_serial_port *port = tty->driver_data;
unsigned int state;
- dbg("%s - port %d", __func__, port->number);
if (break_state == 0)
state = BREAK_OFF;
else
state = BREAK_ON;
- dbg("%s - turning break %s", __func__,
- state == BREAK_OFF ? "off" : "on");
+ dev_dbg(&port->dev, "%s - turning break %s\n", __func__,
+ state == BREAK_OFF ? "off" : "on");
cp210x_set_config(port, CP210X_SET_BREAK, &state, 2);
}
static int cp210x_startup(struct usb_serial *serial)
{
+ struct usb_host_interface *cur_altsetting;
+ struct cp210x_serial_private *spriv;
+
/* cp210x buffers behave strangely unless device is reset */
usb_reset_device(serial->dev);
- return 0;
-}
-static int __init cp210x_init(void)
-{
- int retval;
+ spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
+ if (!spriv)
+ return -ENOMEM;
- retval = usb_serial_register(&cp210x_device);
- if (retval)
- return retval; /* Failed to register */
+ cur_altsetting = serial->interface->cur_altsetting;
+ spriv->bInterfaceNumber = cur_altsetting->desc.bInterfaceNumber;
- retval = usb_register(&cp210x_driver);
- if (retval) {
- /* Failed to register */
- usb_serial_deregister(&cp210x_device);
- return retval;
- }
+ usb_set_serial_data(serial, spriv);
- /* Success */
- printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
- DRIVER_DESC "\n");
return 0;
}
-static void __exit cp210x_exit(void)
+static void cp210x_release(struct usb_serial *serial)
{
- usb_deregister(&cp210x_driver);
- usb_serial_deregister(&cp210x_device);
+ struct cp210x_serial_private *spriv;
+
+ spriv = usb_get_serial_data(serial);
+ kfree(spriv);
}
-module_init(cp210x_init);
-module_exit(cp210x_exit);
+module_usb_serial_driver(serial_drivers, id_table);
MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL");
-
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Enable verbose debugging messages");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 20:24:11 +0000