USB: serial: f81232: add F81534A support
The Fintek F81532A/534A/535/536 is USB-to-2/4/8/12 serial ports device and the serial port is default disabled when plugin computer. The IC is contains devices as following: 1. HUB (all devices is connected with this hub) 2. GPIO/Control device. (enable serial port and control GPIOs) 3. serial port 1 to x (2/4/8/12) It's most same with F81232, the UART device is difference as follow: 1. TX/RX bulk size is 128/512bytes 2. RX bulk layout change: F81232: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... F81534A:[LEN][Data.....][LSR] Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com> [johan: reword an error message] Signed-off-by: Johan Hovold <johan@kernel.org>
This commit is contained in:
Ji-Ze Hong (Peter Hong)
Johan Hovold
parent
c4b8f9713d
commit
11301d41ab
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@ -1,6 +1,7 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Fintek F81232 USB to serial adaptor driver
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* Fintek F81532A/534A/535/536 USB to 2/4/8/12 serial adaptor driver
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*
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* Copyright (C) 2012 Greg Kroah-Hartman (gregkh@linuxfoundation.org)
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* Copyright (C) 2012 Linux Foundation
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@ -21,11 +22,36 @@
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#include <linux/usb/serial.h>
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#include <linux/serial_reg.h>
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static const struct usb_device_id id_table[] = {
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{ USB_DEVICE(0x1934, 0x0706) },
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#define F81232_ID \
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{ USB_DEVICE(0x1934, 0x0706) } /* 1 port UART device */
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#define F81534A_SERIES_ID \
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{ USB_DEVICE(0x2c42, 0x1602) }, /* In-Box 2 port UART device */ \
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{ USB_DEVICE(0x2c42, 0x1604) }, /* In-Box 4 port UART device */ \
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{ USB_DEVICE(0x2c42, 0x1605) }, /* In-Box 8 port UART device */ \
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{ USB_DEVICE(0x2c42, 0x1606) }, /* In-Box 12 port UART device */ \
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{ USB_DEVICE(0x2c42, 0x1608) }, /* Non-Flash type */ \
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{ USB_DEVICE(0x2c42, 0x1632) }, /* 2 port UART device */ \
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{ USB_DEVICE(0x2c42, 0x1634) }, /* 4 port UART device */ \
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{ USB_DEVICE(0x2c42, 0x1635) }, /* 8 port UART device */ \
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{ USB_DEVICE(0x2c42, 0x1636) } /* 12 port UART device */
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static const struct usb_device_id f81232_id_table[] = {
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F81232_ID,
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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static const struct usb_device_id f81534a_id_table[] = {
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F81534A_SERIES_ID,
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{ } /* Terminating entry */
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};
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static const struct usb_device_id combined_id_table[] = {
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F81232_ID,
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F81534A_SERIES_ID,
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, combined_id_table);
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/* Maximum baudrate for F81232 */
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#define F81232_MAX_BAUDRATE 1500000
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@ -61,6 +87,11 @@ MODULE_DEVICE_TABLE(usb, id_table);
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#define F81232_CLK_14_77_MHZ (BIT(1) | BIT(0))
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#define F81232_CLK_MASK GENMASK(1, 0)
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#define F81534A_MODE_REG 0x107
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#define F81534A_TRIGGER_MASK GENMASK(3, 2)
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#define F81534A_TRIGGER_MULTIPLE_4X BIT(3)
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#define F81534A_FIFO_128BYTE (BIT(1) | BIT(0))
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struct f81232_private {
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struct mutex lock;
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u8 modem_control;
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@ -383,6 +414,47 @@ static void f81232_process_read_urb(struct urb *urb)
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tty_flip_buffer_push(&port->port);
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}
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static void f81534a_process_read_urb(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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unsigned char *data = urb->transfer_buffer;
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char tty_flag;
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unsigned int i;
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u8 lsr;
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u8 len;
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if (urb->actual_length < 3) {
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dev_err(&port->dev, "short message received: %d\n",
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urb->actual_length);
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return;
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}
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len = data[0];
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if (len != urb->actual_length) {
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dev_err(&port->dev, "malformed message received: %d (%d)\n",
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urb->actual_length, len);
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return;
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}
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/* bulk-in data: [LEN][Data.....][LSR] */
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lsr = data[len - 1];
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tty_flag = f81232_handle_lsr(port, lsr);
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if (port->port.console && port->sysrq) {
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for (i = 1; i < len - 1; ++i) {
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if (!usb_serial_handle_sysrq_char(port, data[i])) {
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tty_insert_flip_char(&port->port, data[i],
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tty_flag);
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}
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}
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} else {
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tty_insert_flip_string_fixed_flag(&port->port, &data[1],
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tty_flag, len - 2);
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}
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tty_flip_buffer_push(&port->port);
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}
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static void f81232_break_ctl(struct tty_struct *tty, int break_state)
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{
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struct usb_serial_port *port = tty->driver_data;
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@ -666,6 +738,24 @@ static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
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return 0;
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}
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static int f81534a_open(struct tty_struct *tty, struct usb_serial_port *port)
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{
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int status;
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u8 mask;
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u8 val;
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val = F81534A_TRIGGER_MULTIPLE_4X | F81534A_FIFO_128BYTE;
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mask = F81534A_TRIGGER_MASK | F81534A_FIFO_128BYTE;
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status = f81232_set_mask_register(port, F81534A_MODE_REG, mask, val);
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if (status) {
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dev_err(&port->dev, "failed to set MODE_REG: %d\n", status);
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return status;
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}
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return f81232_open(tty, port);
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}
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static void f81232_close(struct usb_serial_port *port)
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{
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struct f81232_private *port_priv = usb_get_serial_port_data(port);
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@ -810,7 +900,7 @@ static struct usb_serial_driver f81232_device = {
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.owner = THIS_MODULE,
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.name = "f81232",
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},
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.id_table = id_table,
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.id_table = f81232_id_table,
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.num_ports = 1,
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.bulk_in_size = 256,
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.bulk_out_size = 256,
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@ -832,14 +922,40 @@ static struct usb_serial_driver f81232_device = {
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.resume = f81232_resume,
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};
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static struct usb_serial_driver f81534a_device = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "f81534a",
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},
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.id_table = f81534a_id_table,
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.num_ports = 1,
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.open = f81534a_open,
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.close = f81232_close,
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.dtr_rts = f81232_dtr_rts,
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.carrier_raised = f81232_carrier_raised,
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.get_serial = f81232_get_serial_info,
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.break_ctl = f81232_break_ctl,
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.set_termios = f81232_set_termios,
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.tiocmget = f81232_tiocmget,
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.tiocmset = f81232_tiocmset,
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.tiocmiwait = usb_serial_generic_tiocmiwait,
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.tx_empty = f81232_tx_empty,
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.process_read_urb = f81534a_process_read_urb,
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.read_int_callback = f81232_read_int_callback,
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.port_probe = f81232_port_probe,
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.suspend = f81232_suspend,
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.resume = f81232_resume,
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};
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static struct usb_serial_driver * const serial_drivers[] = {
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&f81232_device,
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&f81534a_device,
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NULL,
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};
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module_usb_serial_driver(serial_drivers, id_table);
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module_usb_serial_driver(serial_drivers, combined_id_table);
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MODULE_DESCRIPTION("Fintek F81232 USB to serial adaptor driver");
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MODULE_DESCRIPTION("Fintek F81232/532A/534A/535/536 USB to serial driver");
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MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");
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MODULE_AUTHOR("Peter Hong <peter_hong@fintek.com.tw>");
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MODULE_LICENSE("GPL v2");
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