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Diffstat (limited to 'drivers/usb/serial/f81232.c')
-rw-r--r--drivers/usb/serial/f81232.c354
1 files changed, 318 insertions, 36 deletions
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index 43fa1f0716b7..dcda7fb164b4 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Fintek F81232 USB to serial adaptor driver
+ * Fintek F81532A/534A/535/536 USB to 2/4/8/12 serial adaptor driver
*
* Copyright (C) 2012 Greg Kroah-Hartman (gregkh@linuxfoundation.org)
* Copyright (C) 2012 Linux Foundation
@@ -21,11 +22,45 @@
#include <linux/usb/serial.h>
#include <linux/serial_reg.h>
-static const struct usb_device_id id_table[] = {
- { USB_DEVICE(0x1934, 0x0706) },
+#define F81232_ID \
+ { USB_DEVICE(0x1934, 0x0706) } /* 1 port UART device */
+
+#define F81534A_SERIES_ID \
+ { USB_DEVICE(0x2c42, 0x1602) }, /* In-Box 2 port UART device */ \
+ { USB_DEVICE(0x2c42, 0x1604) }, /* In-Box 4 port UART device */ \
+ { USB_DEVICE(0x2c42, 0x1605) }, /* In-Box 8 port UART device */ \
+ { USB_DEVICE(0x2c42, 0x1606) }, /* In-Box 12 port UART device */ \
+ { USB_DEVICE(0x2c42, 0x1608) }, /* Non-Flash type */ \
+ { USB_DEVICE(0x2c42, 0x1632) }, /* 2 port UART device */ \
+ { USB_DEVICE(0x2c42, 0x1634) }, /* 4 port UART device */ \
+ { USB_DEVICE(0x2c42, 0x1635) }, /* 8 port UART device */ \
+ { USB_DEVICE(0x2c42, 0x1636) } /* 12 port UART device */
+
+#define F81534A_CTRL_ID \
+ { USB_DEVICE(0x2c42, 0x16f8) } /* Global control device */
+
+static const struct usb_device_id f81232_id_table[] = {
+ F81232_ID,
{ } /* Terminating entry */
};
-MODULE_DEVICE_TABLE(usb, id_table);
+
+static const struct usb_device_id f81534a_id_table[] = {
+ F81534A_SERIES_ID,
+ { } /* Terminating entry */
+};
+
+static const struct usb_device_id f81534a_ctrl_id_table[] = {
+ F81534A_CTRL_ID,
+ { } /* Terminating entry */
+};
+
+static const struct usb_device_id combined_id_table[] = {
+ F81232_ID,
+ F81534A_SERIES_ID,
+ F81534A_CTRL_ID,
+ { } /* Terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, combined_id_table);
/* Maximum baudrate for F81232 */
#define F81232_MAX_BAUDRATE 1500000
@@ -35,6 +70,7 @@ MODULE_DEVICE_TABLE(usb, id_table);
#define F81232_REGISTER_REQUEST 0xa0
#define F81232_GET_REGISTER 0xc0
#define F81232_SET_REGISTER 0x40
+#define F81534A_ACCESS_REG_RETRY 2
#define SERIAL_BASE_ADDRESS 0x0120
#define RECEIVE_BUFFER_REGISTER (0x00 + SERIAL_BASE_ADDRESS)
@@ -61,6 +97,22 @@ MODULE_DEVICE_TABLE(usb, id_table);
#define F81232_CLK_14_77_MHZ (BIT(1) | BIT(0))
#define F81232_CLK_MASK GENMASK(1, 0)
+#define F81534A_MODE_REG 0x107
+#define F81534A_TRIGGER_MASK GENMASK(3, 2)
+#define F81534A_TRIGGER_MULTIPLE_4X BIT(3)
+#define F81534A_FIFO_128BYTE (BIT(1) | BIT(0))
+
+/* Serial port self GPIO control, 2bytes [control&output data][input data] */
+#define F81534A_GPIO_REG 0x10e
+#define F81534A_GPIO_MODE2_DIR BIT(6) /* 1: input, 0: output */
+#define F81534A_GPIO_MODE1_DIR BIT(5)
+#define F81534A_GPIO_MODE0_DIR BIT(4)
+#define F81534A_GPIO_MODE2_OUTPUT BIT(2)
+#define F81534A_GPIO_MODE1_OUTPUT BIT(1)
+#define F81534A_GPIO_MODE0_OUTPUT BIT(0)
+
+#define F81534A_CTRL_CMD_ENABLE_PORT 0x116
+
struct f81232_private {
struct mutex lock;
u8 modem_control;
@@ -322,10 +374,38 @@ exit:
__func__, retval);
}
+static char f81232_handle_lsr(struct usb_serial_port *port, u8 lsr)
+{
+ struct f81232_private *priv = usb_get_serial_port_data(port);
+ char tty_flag = TTY_NORMAL;
+
+ if (!(lsr & UART_LSR_BRK_ERROR_BITS))
+ return tty_flag;
+
+ if (lsr & UART_LSR_BI) {
+ tty_flag = TTY_BREAK;
+ port->icount.brk++;
+ usb_serial_handle_break(port);
+ } else if (lsr & UART_LSR_PE) {
+ tty_flag = TTY_PARITY;
+ port->icount.parity++;
+ } else if (lsr & UART_LSR_FE) {
+ tty_flag = TTY_FRAME;
+ port->icount.frame++;
+ }
+
+ if (lsr & UART_LSR_OE) {
+ port->icount.overrun++;
+ schedule_work(&priv->lsr_work);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
+ }
+
+ return tty_flag;
+}
+
static void f81232_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
- struct f81232_private *priv = usb_get_serial_port_data(port);
unsigned char *data = urb->transfer_buffer;
char tty_flag;
unsigned int i;
@@ -341,29 +421,8 @@ static void f81232_process_read_urb(struct urb *urb)
/* bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... */
for (i = 0; i < urb->actual_length; i += 2) {
- tty_flag = TTY_NORMAL;
lsr = data[i];
-
- if (lsr & UART_LSR_BRK_ERROR_BITS) {
- if (lsr & UART_LSR_BI) {
- tty_flag = TTY_BREAK;
- port->icount.brk++;
- usb_serial_handle_break(port);
- } else if (lsr & UART_LSR_PE) {
- tty_flag = TTY_PARITY;
- port->icount.parity++;
- } else if (lsr & UART_LSR_FE) {
- tty_flag = TTY_FRAME;
- port->icount.frame++;
- }
-
- if (lsr & UART_LSR_OE) {
- port->icount.overrun++;
- schedule_work(&priv->lsr_work);
- tty_insert_flip_char(&port->port, 0,
- TTY_OVERRUN);
- }
- }
+ tty_flag = f81232_handle_lsr(port, lsr);
if (port->port.console && port->sysrq) {
if (usb_serial_handle_sysrq_char(port, data[i + 1]))
@@ -376,6 +435,47 @@ static void f81232_process_read_urb(struct urb *urb)
tty_flip_buffer_push(&port->port);
}
+static void f81534a_process_read_urb(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ char tty_flag;
+ unsigned int i;
+ u8 lsr;
+ u8 len;
+
+ if (urb->actual_length < 3) {
+ dev_err(&port->dev, "short message received: %d\n",
+ urb->actual_length);
+ return;
+ }
+
+ len = data[0];
+ if (len != urb->actual_length) {
+ dev_err(&port->dev, "malformed message received: %d (%d)\n",
+ urb->actual_length, len);
+ return;
+ }
+
+ /* bulk-in data: [LEN][Data.....][LSR] */
+ lsr = data[len - 1];
+ tty_flag = f81232_handle_lsr(port, lsr);
+
+ if (port->port.console && port->sysrq) {
+ for (i = 1; i < len - 1; ++i) {
+ if (!usb_serial_handle_sysrq_char(port, data[i])) {
+ tty_insert_flip_char(&port->port, data[i],
+ tty_flag);
+ }
+ }
+ } else {
+ tty_insert_flip_string_fixed_flag(&port->port, &data[1],
+ tty_flag, len - 2);
+ }
+
+ tty_flip_buffer_push(&port->port);
+}
+
static void f81232_break_ctl(struct tty_struct *tty, int break_state)
{
struct usb_serial_port *port = tty->driver_data;
@@ -659,6 +759,24 @@ static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
return 0;
}
+static int f81534a_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ int status;
+ u8 mask;
+ u8 val;
+
+ val = F81534A_TRIGGER_MULTIPLE_4X | F81534A_FIFO_128BYTE;
+ mask = F81534A_TRIGGER_MASK | F81534A_FIFO_128BYTE;
+
+ status = f81232_set_mask_register(port, F81534A_MODE_REG, mask, val);
+ if (status) {
+ dev_err(&port->dev, "failed to set MODE_REG: %d\n", status);
+ return status;
+ }
+
+ return f81232_open(tty, port);
+}
+
static void f81232_close(struct usb_serial_port *port)
{
struct f81232_private *port_priv = usb_get_serial_port_data(port);
@@ -678,6 +796,20 @@ static void f81232_dtr_rts(struct usb_serial_port *port, int on)
f81232_set_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
}
+static bool f81232_tx_empty(struct usb_serial_port *port)
+{
+ int status;
+ u8 tmp;
+
+ status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
+ if (!status) {
+ if ((tmp & UART_LSR_TEMT) != UART_LSR_TEMT)
+ return false;
+ }
+
+ return true;
+}
+
static int f81232_carrier_raised(struct usb_serial_port *port)
{
u8 msr;
@@ -728,11 +860,98 @@ static void f81232_lsr_worker(struct work_struct *work)
dev_warn(&port->dev, "read LSR failed: %d\n", status);
}
+static int f81534a_ctrl_set_register(struct usb_interface *intf, u16 reg,
+ u16 size, void *val)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ int retry = F81534A_ACCESS_REG_RETRY;
+ int status;
+ u8 *tmp;
+
+ tmp = kmemdup(val, size, GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ while (retry--) {
+ status = usb_control_msg(dev,
+ usb_sndctrlpipe(dev, 0),
+ F81232_REGISTER_REQUEST,
+ F81232_SET_REGISTER,
+ reg,
+ 0,
+ tmp,
+ size,
+ USB_CTRL_SET_TIMEOUT);
+ if (status < 0) {
+ status = usb_translate_errors(status);
+ if (status == -EIO)
+ continue;
+ } else if (status != size) {
+ /* Retry on short transfers */
+ status = -EIO;
+ continue;
+ } else {
+ status = 0;
+ }
+
+ break;
+ }
+
+ if (status) {
+ dev_err(&intf->dev, "failed to set register 0x%x: %d\n",
+ reg, status);
+ }
+
+ kfree(tmp);
+ return status;
+}
+
+static int f81534a_ctrl_enable_all_ports(struct usb_interface *intf, bool en)
+{
+ unsigned char enable[2] = {0};
+ int status;
+
+ /*
+ * Enable all available serial ports, define as following:
+ * bit 15 : Reset behavior (when HUB got soft reset)
+ * 0: maintain all serial port enabled state.
+ * 1: disable all serial port.
+ * bit 0~11 : Serial port enable bit.
+ */
+ if (en) {
+ enable[0] = 0xff;
+ enable[1] = 0x8f;
+ }
+
+ status = f81534a_ctrl_set_register(intf, F81534A_CTRL_CMD_ENABLE_PORT,
+ sizeof(enable), enable);
+ if (status)
+ dev_err(&intf->dev, "failed to enable ports: %d\n", status);
+
+ return status;
+}
+
+static int f81534a_ctrl_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ return f81534a_ctrl_enable_all_ports(intf, true);
+}
+
+static void f81534a_ctrl_disconnect(struct usb_interface *intf)
+{
+ f81534a_ctrl_enable_all_ports(intf, false);
+}
+
+static int f81534a_ctrl_resume(struct usb_interface *intf)
+{
+ return f81534a_ctrl_enable_all_ports(intf, true);
+}
+
static int f81232_port_probe(struct usb_serial_port *port)
{
struct f81232_private *priv;
- priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ priv = devm_kzalloc(&port->dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
@@ -748,14 +967,17 @@ static int f81232_port_probe(struct usb_serial_port *port)
return 0;
}
-static int f81232_port_remove(struct usb_serial_port *port)
+static int f81534a_port_probe(struct usb_serial_port *port)
{
- struct f81232_private *priv;
+ int status;
- priv = usb_get_serial_port_data(port);
- kfree(priv);
+ /* tri-state with pull-high, default RS232 Mode */
+ status = f81232_set_register(port, F81534A_GPIO_REG,
+ F81534A_GPIO_MODE2_DIR);
+ if (status)
+ return status;
- return 0;
+ return f81232_port_probe(port);
}
static int f81232_suspend(struct usb_serial *serial, pm_message_t message)
@@ -799,7 +1021,7 @@ static struct usb_serial_driver f81232_device = {
.owner = THIS_MODULE,
.name = "f81232",
},
- .id_table = id_table,
+ .id_table = f81232_id_table,
.num_ports = 1,
.bulk_in_size = 256,
.bulk_out_size = 256,
@@ -813,22 +1035,82 @@ static struct usb_serial_driver f81232_device = {
.tiocmget = f81232_tiocmget,
.tiocmset = f81232_tiocmset,
.tiocmiwait = usb_serial_generic_tiocmiwait,
+ .tx_empty = f81232_tx_empty,
.process_read_urb = f81232_process_read_urb,
.read_int_callback = f81232_read_int_callback,
.port_probe = f81232_port_probe,
- .port_remove = f81232_port_remove,
+ .suspend = f81232_suspend,
+ .resume = f81232_resume,
+};
+
+static struct usb_serial_driver f81534a_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "f81534a",
+ },
+ .id_table = f81534a_id_table,
+ .num_ports = 1,
+ .open = f81534a_open,
+ .close = f81232_close,
+ .dtr_rts = f81232_dtr_rts,
+ .carrier_raised = f81232_carrier_raised,
+ .get_serial = f81232_get_serial_info,
+ .break_ctl = f81232_break_ctl,
+ .set_termios = f81232_set_termios,
+ .tiocmget = f81232_tiocmget,
+ .tiocmset = f81232_tiocmset,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .tx_empty = f81232_tx_empty,
+ .process_read_urb = f81534a_process_read_urb,
+ .read_int_callback = f81232_read_int_callback,
+ .port_probe = f81534a_port_probe,
.suspend = f81232_suspend,
.resume = f81232_resume,
};
static struct usb_serial_driver * const serial_drivers[] = {
&f81232_device,
+ &f81534a_device,
NULL,
};
-module_usb_serial_driver(serial_drivers, id_table);
+static struct usb_driver f81534a_ctrl_driver = {
+ .name = "f81534a_ctrl",
+ .id_table = f81534a_ctrl_id_table,
+ .probe = f81534a_ctrl_probe,
+ .disconnect = f81534a_ctrl_disconnect,
+ .resume = f81534a_ctrl_resume,
+};
+
+static int __init f81232_init(void)
+{
+ int status;
+
+ status = usb_register_driver(&f81534a_ctrl_driver, THIS_MODULE,
+ KBUILD_MODNAME);
+ if (status)
+ return status;
+
+ status = usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME,
+ combined_id_table);
+ if (status) {
+ usb_deregister(&f81534a_ctrl_driver);
+ return status;
+ }
+
+ return 0;
+}
+
+static void __exit f81232_exit(void)
+{
+ usb_serial_deregister_drivers(serial_drivers);
+ usb_deregister(&f81534a_ctrl_driver);
+}
+
+module_init(f81232_init);
+module_exit(f81232_exit);
-MODULE_DESCRIPTION("Fintek F81232 USB to serial adaptor driver");
+MODULE_DESCRIPTION("Fintek F81232/532A/534A/535/536 USB to serial driver");
MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");
MODULE_AUTHOR("Peter Hong <peter_hong@fintek.com.tw>");
MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 15:16:15 +0100