[PATCH V3 1/1] usb:serial:f81534 add F81532/534 driver

From: Peter Hung
Date: Wed Jul 08 2015 - 23:16:16 EST

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This driver is for Fintek F81532/F81534 USB to Serial Ports IC.

Features:
1. F81534 is 1-to-4 & F81532 is 1-to-2 serial ports IC
2. Support Baudrate from B50 to B1500000 (excluding B1000000).
3. The RTS signal can be transformed their behavior with
configuration by default ioctl TIOCGRS485/TIOCSRS485
(for RS232/RS485/RS422 with transceiver)

If the driver setting with SER_RS485_ENABLED, the RTS signal will
high with not in TX and low with in TX.

If the driver setting with SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND,
the RTS signal will low with not in TX and high with in TX.

4. There are 4x3 output-only ic pins to control transceiver mode.
It's can be controlled via gpiolib. We could found the gpio
number from /sys/class/tty/ttyUSB[x]/device/gpiochap[yyy] where
x is F81532/534 serial port and yyy is gpiochip number.

After we found chip number, we can export 3 gpios(M2/M1/M0) per
serial port by
echo yyy > /sys/class/gpio/export
echo yyy+1 > /sys/class/gpio/export
echo yyy+2 > /sys/class/gpio/export

then we can control it with
echo [M0 value] > /sys/class/gpio/gpio[yyy]/value
echo [M1 value] > /sys/class/gpio/gpio[yyy+1]/value
echo [M2 value] > /sys/class/gpio/gpio[yyy+2]/value
which M0/M1/M2 as your desired value, value is only 0 or 1.

When configure complete, It's a must to free all gpio by
echo yyy > /sys/class/gpio/unexport
echo yyy+1 > /sys/class/gpio/unexport
echo yyy+2 > /sys/class/gpio/unexport

The driver will "save" gpio configure after we release
all gpio of a serial port.

For examples to change mode & gpio with F81532/534
Evalaution Board.

F81532 EVB
port0: F81437 (RS232 only)
port1: F81439 (RS232/RS485/RS422 ... etc.)
F81534 EVB
port0/1: F81437 (RS232 only)
port2/3: F81439 (RS232/RS485/RS422 ... etc.)

1. RS232 Mode (Default IC Mode)
1. Set struct serial_rs485 flags "without" SER_RS485_ENABLED
(control F81532/534 RTS control)
2. Set M2/M1/M0 as 0/0/1
(control F81532/534 output pin to control transceiver mode)

2. RS485 Mode (RTS Low when TX Mode)
1. Set struct serial_rs485 flags with SER_RS485_ENABLED
2. Set M2/M1/M0 as 0/1/0

3. RS485 Mode (RTS High when TX Mode)
1. Set struct serial_rs485 flags with SER_RS485_ENABLED and
SER_RS485_RTS_ON_SEND
2. Set M2/M1/M0 as 0/1/1

4. RS422 Mode
1. The RTS mode is dont care.
2. Set M2/M1/M0 as 0/0/0

Please reference https://bitbucket.org/hpeter/fintek-general/src/
with f81534/tools to get set_gpio.c & set_mode.c. Please use it
carefully.

Changelog
v3
1. Migrate read, write and some routine from custom code to usbserial
subsystem callback function.
2. Use more defines to replece magic numbers to make it meaningful
3. Make more comments as document in source code.

v2
1. v1 version submit to staging tree, but Greg KH advised me to
cleanup source code & re-submit it to correct subsystem
2. Remove all custom ioctl commands

Signed-off-by: Peter Hung <hpeter+linux_kernel@xxxxxxxxx>
---
drivers/usb/serial/Kconfig | 10 +
drivers/usb/serial/Makefile | 1 +
drivers/usb/serial/f81534.c | 3316 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 3327 insertions(+)
create mode 100644 drivers/usb/serial/f81534.c

diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index 56ecb8b..0642864 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -255,6 +255,16 @@ config USB_SERIAL_F81232
To compile this driver as a module, choose M here: the
module will be called f81232.

+config USB_SERIAL_F8153X
+ tristate "USB Fintek F81532/534 Multi-Ports Serial Driver"
+ help
+ Say Y here if you want to use the Fintek F81532/534 Multi-Ports
+ usb to serial adapter.
+
+ To compile this driver as a module, choose M here: the
+ module will be called f81534.
+
+
config USB_SERIAL_GARMIN
tristate "USB Garmin GPS driver"
help
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index 349d9df..9e43b7b 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_USB_SERIAL_EDGEPORT) += io_edgeport.o
obj-$(CONFIG_USB_SERIAL_EDGEPORT_TI) += io_ti.o
obj-$(CONFIG_USB_SERIAL_EMPEG) += empeg.o
obj-$(CONFIG_USB_SERIAL_F81232) += f81232.o
+obj-$(CONFIG_USB_SERIAL_F8153X) += f81534.o
obj-$(CONFIG_USB_SERIAL_FTDI_SIO) += ftdi_sio.o
obj-$(CONFIG_USB_SERIAL_GARMIN) += garmin_gps.o
obj-$(CONFIG_USB_SERIAL_IPAQ) += ipaq.o
diff --git a/drivers/usb/serial/f81534.c b/drivers/usb/serial/f81534.c
new file mode 100644
index 0000000..8aa0b51
--- /dev/null
+++ b/drivers/usb/serial/f81534.c
@@ -0,0 +1,3316 @@
+/*
+ * F81532/F81534 USB to Serial Ports Bridge
+ *
+ * F81532 => 2 Serial Ports
+ * F81534 => 4 Serial Ports
+ *
+ * Copyright (C) 2014 Tom Tsai (Tom_Tsai@xxxxxxxxxxxxx)
+ *
+ * The F81532/F81534 had 1 control endpoint for setting,
+ * 1 endport bulkout for all serial port write out and
+ * 1 endport bulkin for all serial port read in.
+ *
+ * write urb is fixed with 512bytes, per serial port used 128Bytes.
+ * is can be described by f81534_prepare_write_buffer()
+ *
+ * read urb is 512Bytes max. per serial port used 128Bytes.
+ * is can be described by f81534_process_read_urb(), it' maybe
+ * received with 128x1,2,3,4 bytes.
+ *
+ * We can control M0/M1/M2 per ports by gpiolib, it's recommend
+ * sequence to request 3 pins, change value and free 3 pins. We'll
+ * save it when M0/M1/M2 pin all released this port to reduce write
+ * operations.
+ *
+ */
+#include <asm/unaligned.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/serial.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+#include <linux/serial_reg.h>
+#include <linux/uaccess.h>
+#include <linux/version.h>
+#include <linux/workqueue.h>
+#include <linux/kfifo.h>
+#include <linux/fs.h>
+#include <linux/mutex.h>
+#include <linux/gpio.h>
+
+#define F81534_TIOCGET_RETRY 5
+
+/* Serial Port register Address */
+#define SERIAL_BASE_ADDRESS 0x1200
+#define RECEIVE_BUFFER_REGISTER (0x00 + SERIAL_BASE_ADDRESS)
+#define TRANSMIT_HOLDING_REGISTER (0x00 + SERIAL_BASE_ADDRESS)
+#define INTERRUPT_ENABLE_REGISTER (0x01 + SERIAL_BASE_ADDRESS)
+#define INTERRUPT_IDENT_REGISTER (0x02 + SERIAL_BASE_ADDRESS)
+#define FIFO_CONTROL_REGISTER (0x02 + SERIAL_BASE_ADDRESS)
+#define LINE_CONTROL_REGISTER (0x03 + SERIAL_BASE_ADDRESS)
+#define MODEM_CONTROL_REGISTER (0x04 + SERIAL_BASE_ADDRESS)
+#define LINE_STATUS_REGISTER (0x05 + SERIAL_BASE_ADDRESS)
+#define MODEM_STATUS_REGISTER (0x06 + SERIAL_BASE_ADDRESS)
+#define CLK_SEL_REGISTER (0x08 + SERIAL_BASE_ADDRESS)
+#define CONFIG1_REGISTER (0x09 + SERIAL_BASE_ADDRESS)
+#define SADDRESS_REGISTER (0x0a + SERIAL_BASE_ADDRESS)
+#define SADEN_REGISTER (0x0b + SERIAL_BASE_ADDRESS)
+#define DIVISOR_LATCH_LSB (0x00 + SERIAL_BASE_ADDRESS)
+#define DIVISOR_LATCH_MSB (0x01 + SERIAL_BASE_ADDRESS)
+#define SCRATCH_PAD_REGISTER (0x07 + SERIAL_BASE_ADDRESS)
+#define MSR_ACCESS_SHADOW_REG 0x5a00
+
+#define F81534_RESERVE_ADDRESS_START 0x3000
+#define F81534_RESERVE_SIZE 8
+
+#define F81534_CUSTOM_ADDRESS_START 0x4000
+#define F81534_CUSTOM_TOTAL_SIZE 0x10
+#define F81534_CUSTOM_DATA_SIZE 0x10
+#define F81534_CUSTOM_MAX_IDX \
+ (F81534_CUSTOM_TOTAL_SIZE/F81534_CUSTOM_DATA_SIZE)
+#define F81534_CUSTOM_NO_CUSTOM_DATA (-1)
+#define F81534_CUSTOM_VALID_TOKEN 0xf0
+#define F81534_CONF_OFFSET 1
+#define F81534_CONF_SIZE 4
+
+#define F81534_MAX_DATA_BLOCK 64
+#define F81534_MAX_BUS_RETRY 2000
+
+/* default urb timeout for usb operations */
+#define F81534_USB_MAX_RETRY 5
+#define F81534_USB_TIMEOUT 1000
+#define F81534_CONTROL_BYTE 0x1B
+#define F81534_SET_GET_REGISTER 0xA0
+
+#define F81534_NUM_PORT 4
+#define F81534_UNUSED_PORT 0xff
+
+#define F81534_WRITE_BUFFER_SIZE (512L) /* size of write buffer */
+#define F81534_READ_BUFFER_SIZE (512L)
+#define IC_NAME "f81534"
+#define DRIVER_DESC \
+ "Fintek USB to Serial Ports Driver (F81532/F81534-Evaluation Board)"
+#define FINTEK_VENDOR_ID 0x1934
+#define FINTEK_DEVICE_ID 0x1202 /* RS232 four port */
+#define F81534_MAX_TX_SIZE 124L
+#define F81534_FIFO_SIZE 128L
+#define F81534_RECEIVE_BLOCK_SIZE 128
+
+#define F81534_TOKEN_RECEIVE 0x01
+#define F81534_TOKEN_WRITE 0x02
+#define F81534_TOKEN_TX_EMPTY 0x03
+#define F81534_TOKEN_MSR_CHANGE 0x04
+
+#define F81534_BUS_BUSY 0x03
+#define F81534_BUS_IDLE 0x04
+#define F81534_BUS_READ_DATA 0x1004
+#define F81534_BUS_REG_STATUS 0x1003
+#define F81534_BUS_REG_START 0x1002
+#define F81534_BUS_REG_END 0x1001
+
+#define F81534_CMD_READ 0x03
+#define F81534_CMD_ENABLE_WR 0x06
+#define F81534_CMD_PROGRAM 0x02
+#define F81534_CMD_ERASE 0x20
+#define F81534_CMD_READ_STATUS 0x05
+
+#define F81534_MEDIA_BUSY_STATUS 0x03
+
+#define F81534_1X_RXTRIGGER 0xc3
+#define F81534_8X_RXTRIGGER 0xcf
+
+#define F81534_DEFAULT_BAUD_RATE 9600
+#define F81534_MAX_BAUDRATE 1500000
+
+#define F81534_RS232_FLAG 0x00
+#define F81534_RS485_FLAG 0x03
+#define F81534_RS485_1_FLAG 0x01
+#define F81534_MODE_MASK 0x03
+
+static int m_f81534_max_tx_size = F81534_MAX_TX_SIZE;
+
+enum eUartMode {
+ eModeRS422,
+ eModeRS232,
+ eModeRS485,
+ eModeRS485_1,
+ eModeRS422_term,
+ eModeRS232_coexist,
+ eModeRS485_1_term,
+ eModeShutdown,
+ eModeInvalid,
+};
+
+struct internal_data {
+ unsigned int address;
+ unsigned int size;
+ unsigned char buf[F81534_MAX_DATA_BLOCK];
+};
+
+struct f81534_pin_config_data {
+ enum eUartMode eForceUartMode;
+ enum eUartMode eGPIOMode;
+ int address[9];
+ int offset[9];
+};
+
+struct reg_value {
+ int reg_address;
+ int reg_offset;
+ int reg_bit;
+};
+
+struct pin_data {
+ struct reg_value port_mode_1;
+ struct reg_value port_mode_0;
+ struct reg_value port_io;
+};
+
+struct out_pin {
+ struct pin_data m1;
+ struct pin_data m2;
+ struct pin_data sd;
+};
+
+struct io_map_value {
+ int product_id;
+ int max_port;
+ enum eUartMode mode;
+
+ struct out_pin port[MAX_NUM_PORTS + 1];
+};
+
+/* The following magic numbers is F81532/534 output pin
+ * register maps
+ */
+static struct io_map_value f81534_rs232_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeRS232,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 0},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 0},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 1},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 0},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 0},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 1},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 0},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 0},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 1},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 0},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 0},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 1},},
+ },
+ },
+
+};
+
+static struct io_map_value f81534_rs485_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeRS485,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 0},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 1},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 0},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 0},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 1},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 0},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 0},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 1},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 0},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 0},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 1},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 0},},
+ },
+ },
+
+};
+
+static struct io_map_value f81534_rs485_1_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeRS485_1,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 0},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 1},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 1},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 0},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 1},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 1},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 0},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 1},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 1},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 0},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 1},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 1},},
+ },
+ },
+
+};
+
+static struct io_map_value f81534_rs422_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeRS422,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 0},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 0},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 0},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 0},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 0},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 0},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 0},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 0},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 0},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 0},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 0},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 0},},
+ },
+ },
+
+};
+
+static struct io_map_value f81534_shutdown_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeShutdown,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 1},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 1},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 1},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 1},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 1},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 1},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 1},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 1},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 1},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 1},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 1},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 1},},
+ },
+ },
+
+};
+
+static struct io_map_value f81534_rs422_term_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeShutdown,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 1},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 0},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 0},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 1},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 0},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 0},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 1},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 0},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 0},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 1},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 0},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 0},},
+ },
+ },
+
+};
+
+static struct io_map_value f81534_rs232_coexist_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeShutdown,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 1},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 0},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 1},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 1},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 0},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 1},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 1},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 0},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 1},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 1},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 0},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 1},},
+ },
+ },
+
+};
+
+static struct io_map_value f81534_rs485_1_term_control = {
+ FINTEK_DEVICE_ID, F81534_NUM_PORT, eModeShutdown,
+
+ {
+ /* please reference f81439 io port */
+ {
+ {{0x2ad5, 4, 0}, {0x2ad4, 4, 1}, {0x2a90, 4, 1},},
+ {{0x2ad5, 5, 0}, {0x2ad4, 5, 1}, {0x2a90, 5, 1},},
+ {{0x2add, 7, 0}, {0x2adc, 7, 1}, {0x2ae8, 7, 0},},
+ },
+ {
+ {{0x2add, 3, 0}, {0x2adc, 3, 1}, {0x2ae8, 3, 1},},
+ {{0x2add, 0, 0}, {0x2adc, 0, 1}, {0x2ae8, 0, 1},},
+ {{0x2add, 6, 0}, {0x2adc, 6, 1}, {0x2ae8, 6, 0},},
+ },
+ {
+ {{0x2ad3, 6, 0}, {0x2ad2, 6, 1}, {0x2a80, 6, 1},},
+ {{0x2add, 2, 0}, {0x2adc, 2, 1}, {0x2ae8, 2, 1},},
+ {{0x2ad5, 0, 0}, {0x2ad4, 0, 1}, {0x2a90, 0, 0},},
+ },
+ {
+ {{0x2ad5, 1, 0}, {0x2ad4, 1, 1}, {0x2a90, 1, 1},},
+ {{0x2ad5, 2, 0}, {0x2ad4, 2, 1}, {0x2a90, 2, 1},},
+ {{0x2ad5, 3, 0}, {0x2ad4, 3, 1}, {0x2a90, 3, 0},},
+ },
+ },
+
+};
+
+static struct io_map_value *f81534_mode_control[eModeInvalid] = {
+ &f81534_rs422_control,
+ &f81534_rs232_control,
+ &f81534_rs485_control,
+ &f81534_rs485_1_control,
+ &f81534_rs422_term_control,
+ &f81534_rs232_coexist_control,
+ &f81534_rs485_1_term_control,
+ &f81534_shutdown_control,
+};
+
+
+static const struct usb_device_id id_table[] = {
+ {USB_DEVICE(FINTEK_VENDOR_ID, FINTEK_DEVICE_ID)},
+ {} /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, id_table);
+
+enum eIC_Type {
+ eIC_F81530,
+ eIC_F81531,
+ eIC_F81532,
+ eIC_F81533,
+ eIC_F81534,
+};
+
+static const char * const m_ic_name[] = {
+ "F81530",
+ "F81531",
+ "F81532",
+ "F81533",
+ "F81534",
+};
+
+struct f81534_serial_private {
+ enum eIC_Type ic_type;
+ struct usb_serial *serial;
+ bool phy_port_in_use[F81534_NUM_PORT];
+ spinlock_t write_urb_lock;
+ spinlock_t msr_lock;
+ u8 shadowMSR[F81534_NUM_PORT];
+ unsigned long msr_time[F81534_NUM_PORT];
+ u8 port_mapping[F81534_NUM_PORT];
+ struct mutex msr_mutex;
+ struct mutex change_mode_mutex;
+ u8 reserve_data[F81534_RESERVE_SIZE];
+ u32 custom_idx;
+ atomic_t current_active;
+};
+
+struct f81534_port_private {
+ u8 shadowMCR;
+ u8 shadowLCR;
+ struct usb_serial_port *port;
+ u32 tx, rx;
+ u32 currentBaudRate;
+ struct f81534_pin_config_data port_pin_data;
+ struct gpio_chip f81534_gpio_chip;
+ atomic_t gpio_active;
+};
+
+static void f81534_update_lsr(struct usb_serial_port *port,
+ unsigned char *ch);
+
+static void f81534_update_msr(struct usb_serial_port *port,
+ unsigned char *ch);
+
+static int f81534_setup_urbs(struct usb_serial *serial);
+
+static int f81534_set_normal_register(struct usb_device *dev,
+ u16 reg, u8 data);
+
+static int f81534_get_normal_register(struct usb_device *dev,
+ u16 reg, u8 *data);
+
+static int f81534_getregister(struct usb_device *dev,
+ u8 uart, u16 reg, u8 *data);
+
+static void f81534_dtr_rts(struct usb_serial_port *port, int on);
+
+static int f81534_set_port_mode(struct usb_serial_port *port,
+ enum eUartMode eMode);
+
+static int f81534_save_configure_data(struct usb_serial_port *port);
+
+static int f81534_switch_gpio_mode(struct usb_serial_port
+ *serial_port, int mode);
+
+static void f81534_wakeup_all_port(struct usb_serial *serial);
+
+static int f81534_logic_to_phy_port(struct usb_serial *usbserial, int logic)
+{
+ int index;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(usbserial);
+
+ for (index = 0; index < F81534_NUM_PORT; ++index, --logic) {
+ if ((serial_priv->port_mapping[index] != F81534_UNUSED_PORT)
+ && !logic)
+ return serial_priv->port_mapping[index];
+ }
+
+ dev_err(&usbserial->dev->dev,
+ "%s could found mapping: logic: %x\n",
+ __func__, logic);
+ return F81534_UNUSED_PORT;
+}
+
+static int f81534_phy_to_logic_port(struct usb_serial *usbserial, int phy)
+{
+ int index;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(usbserial);
+
+ for (index = 0; index < F81534_NUM_PORT; ++index)
+ if (serial_priv->port_mapping[index] == phy)
+ return index;
+
+ dev_err(&usbserial->dev->dev,
+ "%s could found mapping: phy: %x\n",
+ __func__, phy);
+ return F81534_UNUSED_PORT;
+}
+
+static int f81534_port_to_phy_index(struct usb_serial_port *port)
+{
+ return f81534_logic_to_phy_port(port->serial, port->port_number);
+}
+
+static int f81534_port_index(struct usb_serial_port *port)
+{
+ return port->port_number;
+}
+
+static int f81534_command_delay(struct usb_serial *usbserial)
+{
+ unsigned int count = F81534_MAX_BUS_RETRY;
+ unsigned char tmp;
+ int status;
+ struct usb_device *dev = usbserial->dev;
+
+ do {
+ status = f81534_get_normal_register(dev,
+ F81534_BUS_REG_STATUS, &tmp);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ if (tmp & F81534_BUS_BUSY)
+ continue;
+
+ if (tmp & F81534_BUS_IDLE)
+ break;
+
+ } while (--count);
+
+ if (!count) {
+ dev_err(&usbserial->dev->dev, "%s: max retry exceed !!!\n",
+ __func__);
+ return -EIO;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_STATUS,
+ tmp & ~F81534_BUS_IDLE);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ return 0;
+}
+
+static int f81534_read_data(struct usb_serial *usbserial, int address,
+ int size, unsigned char *buf)
+{
+ unsigned int count = 0;
+ unsigned int read_size = 0;
+ unsigned int block = 0;
+ unsigned char *tmp_buf;
+ int status;
+ int offset;
+ struct usb_device *dev = usbserial->dev;
+
+ tmp_buf = kzalloc(F81534_MAX_DATA_BLOCK, GFP_KERNEL);
+ if (!tmp_buf)
+ return -ENOMEM;
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_START, F81534_CMD_READ);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_START,
+ (address >> 16) & 0xff);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_START,
+ (address >> 8) & 0xff);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_START,
+ (address >> 0) & 0xff);
+ if (status) {
+ dev_err(&dev->dev, "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ /* continuous read mode */
+ do {
+ read_size = min(F81534_MAX_DATA_BLOCK, size);
+
+ for (count = 0; count < read_size; ++count) {
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ if ((size <= F81534_MAX_DATA_BLOCK) &&
+ (read_size == (count + 1))) {
+
+ /* dummy code, force IC to generate a
+ * read pulse the set of value 0xf1 is
+ * dont care (any value is ok)
+ */
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_END, 0xf1);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+ } else {
+
+ /* dummy code, force IC to generate a
+ * read pulse the set of value 0xf1 is
+ * dont care (any value is ok)
+ */
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_START,
+ 0xf1);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_get_normal_register(dev,
+ F81534_BUS_READ_DATA,
+ &tmp_buf[count]);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ goto error;
+ }
+
+ offset = count + (block * F81534_MAX_DATA_BLOCK);
+ buf[offset] = tmp_buf[count];
+ }
+
+ size -= read_size;
+ block += 1;
+ } while (size);
+
+ kfree(tmp_buf);
+ return 0;
+
+error:
+ kfree(tmp_buf);
+ return status;
+
+}
+
+static int f81534_write_data(struct usb_serial *usbserial, int address,
+ int size, unsigned char *buf)
+{
+ unsigned int count = 0;
+ unsigned int write_size = 0;
+ unsigned int block = 0;
+ int offset;
+ int status;
+ struct usb_device *dev = usbserial->dev;
+
+ /* This function maybe cause IC no workable
+ * Please take this carefully
+ */
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_END,
+ F81534_CMD_ENABLE_WR);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_START,
+ F81534_CMD_PROGRAM);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_START,
+ (address >> 16) & 0xff);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_START,
+ (address >> 8) & 0xff);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_START,
+ (address >> 0) & 0xff);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ do {
+ write_size = min(F81534_MAX_DATA_BLOCK, size);
+
+ for (count = 0; count < write_size; ++count) {
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ offset = count + block * F81534_MAX_DATA_BLOCK;
+
+ if ((size <= F81534_MAX_DATA_BLOCK)
+ && (write_size == (count + 1))) {
+
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_END,
+ buf[offset]);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ } else {
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_START,
+ buf[offset]);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+ }
+ }
+
+ size -= write_size;
+ block += 1;
+ } while (size);
+
+ return 0;
+}
+
+static int f81534_erase_sector(struct usb_serial *usbserial, int address)
+{
+ u8 current_status = 0;
+ int status;
+ unsigned int count = F81534_MAX_BUS_RETRY;
+ struct usb_device *dev = usbserial->dev;
+
+ /* This function maybe cause IC no workable
+ * Please take this carefully
+ */
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_END,
+ F81534_CMD_ENABLE_WR);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_START,
+ F81534_CMD_ERASE);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_START,
+ (address >> 16) & 0xff);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_START,
+ (address >> 8) & 0xff);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_END,
+ (address >> 0) & 0xff);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ /* getting status */
+
+ while (--count) {
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_set_normal_register(dev,
+ F81534_BUS_REG_START,
+ F81534_CMD_READ_STATUS);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ /* dummy write, any value is acceptable */
+ status = f81534_set_normal_register(dev, F81534_BUS_REG_END,
+ 0xff);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_command_delay(usbserial);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ status = f81534_get_normal_register(dev,
+ F81534_BUS_READ_DATA,
+ &current_status);
+ if (status) {
+ dev_err(&dev->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ if (!(F81534_MEDIA_BUSY_STATUS & current_status)) {
+ dev_dbg(&usbserial->dev->dev,
+ "%s: data:%x, count:%d, ok\n",
+ __func__, current_status, count);
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int f81534_gpio_get(struct gpio_chip *chip, unsigned gpio_num)
+{
+ struct usb_serial_port *port = container_of(
+ chip->dev, struct usb_serial_port, dev);
+ struct f81534_port_private *port_priv =
+ usb_get_serial_port_data(port);
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+ int current_mode;
+ int status;
+
+ status = mutex_lock_interruptible(
+ &serial_priv->change_mode_mutex);
+ if (status) {
+ dev_err(&port->dev, "%s: interrupted!\n", __func__);
+ return status;
+ }
+
+ current_mode =
+ port_priv->port_pin_data.eGPIOMode;
+ current_mode &= BIT(gpio_num);
+
+ mutex_unlock(&serial_priv->change_mode_mutex);
+ f81534_wakeup_all_port(port->serial);
+
+ return !!current_mode;
+}
+
+static int f81534_gpio_direction_in(struct gpio_chip *chip, unsigned gpio_num)
+{
+ /* always failed */
+ dev_dbg(chip->dev, "%s:", __func__);
+ return -EINVAL;
+}
+
+static int f81534_gpio_direction_out(struct gpio_chip *chip,
+ unsigned gpio_num, int val)
+{
+ /* always successful */
+ dev_dbg(chip->dev, "%s:", __func__);
+ return 0;
+}
+
+static void f81534_gpio_set(struct gpio_chip *chip, unsigned gpio_num, int val)
+{
+ struct usb_serial_port *port = container_of(
+ chip->dev, struct usb_serial_port, dev);
+ struct f81534_port_private *port_priv =
+ usb_get_serial_port_data(port);
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+ int current_mode;
+ int status;
+
+ status = mutex_lock_interruptible(
+ &serial_priv->change_mode_mutex);
+ if (status) {
+ dev_err(&port->dev, "%s: interrupted!\n", __func__);
+ return;
+ }
+
+ /* We'll save gpio mode with M0(bit0)/M1(bit1)/M1(bit1) in
+ * port_pin_data.eGPIOMode. Also f81534_switch_gpio_mode()
+ * will mapping 0:000, 1:001, 2:010, etc.
+ */
+
+ current_mode =
+ port_priv->port_pin_data.eGPIOMode;
+ current_mode &= ~BIT(gpio_num);
+ current_mode |= val ? BIT(gpio_num) : 0;
+
+ status = f81534_switch_gpio_mode(port, current_mode);
+ if (status) {
+ dev_err(&port->dev, "%s: set gpio error!!\n",
+ __func__);
+ goto out;
+ }
+
+ dev_dbg(&port->dev, "%s: num: %d, val:%d\n",
+ __func__, gpio_num, val);
+ port_priv->port_pin_data.eGPIOMode = current_mode;
+
+out:
+ mutex_unlock(&serial_priv->change_mode_mutex);
+ f81534_wakeup_all_port(port->serial);
+}
+
+static int f81534_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
+{
+ /* F81532/534 provide output only output port */
+ return GPIOF_DIR_OUT;
+}
+
+int f81534_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ struct usb_serial_port *port = container_of(
+ chip->dev, struct usb_serial_port, dev);
+ struct f81534_port_private *port_priv =
+ usb_get_serial_port_data(port);
+
+ dev_dbg(chip->dev, "%s %d\n", __func__, offset);
+
+ /* add current actives gpio */
+ atomic_inc(&port_priv->gpio_active);
+ return 0;
+}
+
+void f81534_gpio_free(struct gpio_chip *chip, unsigned offset)
+{
+ struct usb_serial_port *port = container_of(
+ chip->dev, struct usb_serial_port, dev);
+ struct f81534_port_private *port_priv =
+ usb_get_serial_port_data(port);
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+ int status;
+
+ dev_dbg(chip->dev, "%s\n", __func__);
+
+ /* if no current actives gpio, save to IC */
+ if (atomic_dec_return(&port_priv->gpio_active) != 0)
+ return;
+
+ status = mutex_lock_interruptible(
+ &serial_priv->change_mode_mutex);
+ if (status) {
+ dev_err(&port->dev, "%s: interrupted!\n", __func__);
+ return;
+ }
+
+ f81534_save_configure_data(port);
+
+ mutex_unlock(&serial_priv->change_mode_mutex);
+ f81534_wakeup_all_port(port->serial);
+}
+
+static struct gpio_chip f81534_gpio_chip_templete = {
+ .owner = THIS_MODULE,
+ .get_direction = f81534_gpio_get_direction,
+ .get = f81534_gpio_get,
+ .direction_input = f81534_gpio_direction_in,
+ .set = f81534_gpio_set,
+ .direction_output = f81534_gpio_direction_out,
+ .request = f81534_gpio_request,
+ .free = f81534_gpio_free,
+ .ngpio = 3, /*M0/M1/M2*/
+ .base = -1,
+};
+
+static void f81534_wakeup_all_port(struct usb_serial *serial)
+{
+ int i;
+
+ for (i = 0; i < serial->num_ports; ++i) {
+ if (serial->port[i])
+ usb_serial_port_softint(serial->port[i]);
+ }
+}
+
+static int f81534_calc_baud_divisor(u32 baudrate, u32 clockrate, u32 *remain)
+{
+ u32 divisor, rem;
+
+ if (!baudrate)
+ return 0;
+
+ divisor = clockrate / baudrate;
+ rem = clockrate % baudrate;
+
+ if (remain)
+ *remain = rem;
+
+ /* Round to nearest divisor */
+ divisor = DIV_ROUND_CLOSEST(clockrate, baudrate);
+
+ return divisor;
+}
+
+static int f81534_get_normal_register(struct usb_device *dev,
+ u16 reg, u8 *data)
+{
+ int count = F81534_USB_MAX_RETRY;
+ int status;
+ u8 *tmp;
+
+ /* avoid smatch report: error: doing dma on the stack*/
+ tmp = kmalloc(sizeof(u8), GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ /* Our device maybe not reply when heavily loading,
+ * We'll retry for F81534_USB_MAX_RETRY times
+ */
+
+ while (count--) {
+ status = usb_control_msg(dev,
+ usb_rcvctrlpipe(dev, 0),
+ F81534_SET_GET_REGISTER,
+ USB_TYPE_VENDOR | USB_DIR_IN,
+ reg,
+ 0, tmp, sizeof(u8),
+ F81534_USB_TIMEOUT);
+ if (status <= 0) {
+ if (status == 0)
+ status = -EIO;
+ } else {
+ break;
+ }
+ }
+
+ if ((count <= 0) && (status <= 0)) {
+ dev_err(&dev->dev,
+ "%s ERROR reg:%x status:%i failed\n",
+ __func__, reg, status);
+ kfree(tmp);
+ return status;
+ }
+
+ *data = *tmp;
+ kfree(tmp);
+ return 0;
+}
+
+static int f81534_set_normal_register(struct usb_device *dev,
+ u16 reg, u8 data)
+{
+ /* Our device maybe not reply when heavily loading,
+ * We'll retry for F81534_USB_MAX_RETRY times
+ */
+
+ int count = F81534_USB_MAX_RETRY;
+ int status = 0;
+ u8 *tmp;
+
+ /* avoid smatch report: error: doing dma on the stack*/
+ tmp = kmalloc(sizeof(u8), GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ *tmp = data;
+
+ while (count--) {
+ status = usb_control_msg(dev,
+ usb_sndctrlpipe(dev, 0),
+ F81534_SET_GET_REGISTER,
+ USB_TYPE_VENDOR | USB_DIR_OUT,
+ reg, 0, tmp, sizeof(u8),
+ F81534_USB_TIMEOUT);
+ if (status <= 0) {
+ if (status == 0)
+ status = -EIO;
+ } else {
+ break;
+ }
+ }
+
+ if ((count <= 0) && status) {
+ dev_err(&dev->dev,
+ "%s ERROR reg:%x data:0x%x status:%i failed\n",
+ __func__, reg, data, status);
+ kfree(tmp);
+ return status;
+ }
+
+ kfree(tmp);
+ return 0;
+}
+
+static int f81534_setregister(struct usb_device *dev,
+ u8 uart, u16 reg, u8 data)
+{
+ /* Our device maybe not reply when heavily loading,
+ * We'll retry for F81534_USB_MAX_RETRY times
+ */
+
+ int count = F81534_USB_MAX_RETRY;
+ int status;
+ u8 *tmp;
+
+ /* avoid smatch report: error: doing dma on the stack*/
+ tmp = kmalloc(sizeof(u8), GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ *tmp = data;
+
+ while (count--) {
+ status = usb_control_msg(dev,
+ usb_sndctrlpipe(dev, 0),
+ F81534_SET_GET_REGISTER,
+ USB_TYPE_VENDOR | USB_DIR_OUT,
+ reg + uart * 0x10,
+ 0, tmp, sizeof(u8),
+ F81534_USB_TIMEOUT);
+ if (status <= 0) {
+ if (status == 0)
+ status = -EIO;
+ } else {
+ break;
+ }
+ }
+
+ if ((count <= 0) && (status <= 0)) {
+ dev_err(&dev->dev,
+ "%s: port:%d reg:%x data:0x%x status:%i failed\n",
+ __func__, uart, reg + uart * 0x10, data, status);
+ kfree(tmp);
+ return status;
+ }
+
+ kfree(tmp);
+ return 0;
+}
+
+static int f81534_set_port_config(struct usb_device *dev,
+ unsigned char port_number,
+ struct usb_serial_port *port,
+ u32 baudrate, u16 lcr)
+{
+ struct usb_serial *serial = port->serial;
+ struct f81534_port_private *port_priv = usb_get_serial_port_data(port);
+ u16 device_port = f81534_port_to_phy_index(port);
+ u32 divisor[3] = {0, 0, 0};
+ u32 rem[3] = {0, 0, 0};
+ int status;
+ u8 value;
+ bool is485Mode = false;
+ bool needInvert = false;
+
+ switch (port_priv->port_pin_data.eForceUartMode) {
+ case eModeRS232:
+ case eModeShutdown:
+ case eModeRS232_coexist:
+ case eModeInvalid:
+ break;
+
+ case eModeRS485:
+ needInvert = true;
+ default:
+ is485Mode = true;
+ break;
+
+ }
+
+ if (baudrate <= 115200) {
+ value = 0x01; /* 1.846m fixed */
+ divisor[0] = f81534_calc_baud_divisor(baudrate, 115200, NULL);
+ } else {
+ int count;
+ u32 tmpIdx = 0;
+ /* set a bigger value for compare*/
+ u32 minRem = 0xffffffff;
+ u32 tmp;
+ static u32 baudrate_table[3] = { 921600, 1152000, 1500000 };
+ static u8 clock_table[3] = { 0x07, 0x03, 0x05 };
+
+ for (count = 0; count < ARRAY_SIZE(baudrate_table)
+ ; ++count) {
+ tmp = baudrate_table[count];
+ divisor[count] = f81534_calc_baud_divisor(
+ baudrate,
+ tmp,
+ &rem[count]);
+ }
+
+ for (count = ARRAY_SIZE(baudrate_table) - 1;
+ count >= 0; --count) {
+ if (!rem[count] && divisor[count])
+ break; /* best clock */
+
+ if (divisor[count] && (minRem >= rem[count])) {
+ minRem = rem[count];
+ tmpIdx = count;
+ }
+ }
+
+ if (count != -1) {
+ tmpIdx = count;
+ dev_dbg(&dev->dev, "Best Index: %d, clock: %d\n",
+ tmpIdx, baudrate_table[tmpIdx] * 16);
+ } else {
+ dev_dbg(&dev->dev,
+ "Subsititude Index: %d, minRem:%d, clock:%d\n",
+ tmpIdx, minRem, baudrate_table[tmpIdx] * 16);
+ }
+
+ dev_dbg(&dev->dev, "\n");
+
+ for (count = 0; count < ARRAY_SIZE(baudrate_table); ++count)
+ dev_dbg(&dev->dev, "Index: %d, divisor:%d, rem:%d\n",
+ count, divisor[count], rem[count]);
+
+ dev_dbg(&dev->dev, "\n");
+
+ divisor[0] = divisor[tmpIdx];
+ value = clock_table[tmpIdx];
+ }
+
+ value &= ~(BIT(4) | BIT(5)); /* remove bit4 & 5 */
+ value |= is485Mode << 4; /* rs485/422 mode */
+ value |= needInvert << 5; /* invert mode */
+
+
+ status = f81534_setregister(serial->dev,
+ device_port, CLK_SEL_REGISTER, value);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: failed, %d\n", __func__, __LINE__);
+ return status;
+ }
+
+ if (baudrate <= 1200)
+ value = F81534_1X_RXTRIGGER; /* 128 fifo & TL: 1x */
+ else
+ value = F81534_8X_RXTRIGGER; /* 128 fifo & TL: 8x */
+
+
+ status = f81534_setregister(serial->dev, device_port,
+ CONFIG1_REGISTER, value);
+ if (status) {
+ dev_err(&port->dev, "%s: failed, %d\n", __func__, __LINE__);
+ return status;
+ }
+
+ if (baudrate <= 1200)
+ value = UART_FCR_TRIGGER_1 |
+ UART_FCR_ENABLE_FIFO; /* TL: 1 */
+ else if (baudrate >= 1152000)
+ value = UART_FCR_R_TRIG_10 |
+ UART_FCR_ENABLE_FIFO; /* TL: 8 */
+ else
+ value = UART_FCR_R_TRIG_11 |
+ UART_FCR_ENABLE_FIFO; /* TL: 14 */
+
+ status = f81534_setregister(serial->dev, device_port,
+ FIFO_CONTROL_REGISTER, value);
+ if (status) {
+ dev_err(&port->dev, "%s: failed, %d\n", __func__, __LINE__);
+ return status;
+ }
+
+ value = UART_LCR_DLAB;
+ status = f81534_setregister(serial->dev, device_port,
+ LINE_CONTROL_REGISTER, value);
+ if (status) {
+ dev_err(&port->dev, "%s: set LCR failed, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ value = divisor[0] & 0xFF;
+ status = f81534_setregister(serial->dev, device_port,
+ DIVISOR_LATCH_LSB, value);
+ if (status) {
+ dev_err(&port->dev, "%s: set DLAB LSB failed, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ value = (divisor[0] >> 8) & 0xFF;
+ status = f81534_setregister(serial->dev, device_port,
+ DIVISOR_LATCH_MSB, value);
+ if (status) {
+ dev_err(&port->dev, "%s: set DLAB MSB failed, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ status = f81534_setregister(serial->dev, device_port,
+ LINE_CONTROL_REGISTER, lcr);
+ if (status) {
+ dev_err(&port->dev, "%s: set LCR failed, %d\n",
+ __func__, status);
+ return status;
+ }
+
+ return 0;
+}
+
+static int f81534_getregister(struct usb_device *dev,
+ u8 uart, u16 reg, u8 *data)
+{
+ int count = F81534_USB_MAX_RETRY;
+ int status;
+ u8 *tmp;
+
+ /* avoid smatch report: error: doing dma on the stack*/
+ tmp = kmalloc(sizeof(u8), GFP_KERNEL);
+ if (!tmp)
+ return -ENOMEM;
+
+ /* Our device maybe not reply when heavily loading,
+ * We'll retry for F81534_USB_MAX_RETRY times
+ */
+
+ while (count--) {
+ status = usb_control_msg(dev,
+ usb_rcvctrlpipe(dev, 0),
+ F81534_SET_GET_REGISTER,
+ USB_TYPE_VENDOR | USB_DIR_IN,
+ reg + uart * 0x10,
+ 0, tmp, sizeof(u8),
+ F81534_USB_TIMEOUT);
+ if (status <= 0) {
+ if (status == 0)
+ status = -EIO;
+ } else {
+ break;
+ }
+ }
+
+ if ((count <= 0) && (status <= 0)) {
+ dev_err(&dev->dev,
+ "%s ERROR port_number:%d reg:%x status:%i failed\n",
+ __func__, uart, reg + uart * 0x10, status);
+ kfree(tmp);
+ return status;
+ }
+
+ *data = *tmp;
+ kfree(tmp);
+ return 0;
+}
+
+static int f81534_update_mctrl(struct usb_serial_port *port,
+ unsigned int set, unsigned int clear)
+{
+ struct usb_device *dev = port->serial->dev;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+ struct f81534_port_private *port_priv = usb_get_serial_port_data(port);
+ u8 urb_value;
+ int status;
+
+ mutex_lock(&serial_priv->msr_mutex);
+
+ if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) {
+ dev_dbg(&dev->dev, "%s -DTR|RTS not being set|cleared\n",
+ __func__);
+ mutex_unlock(&serial_priv->msr_mutex);
+ return 0; /* no change */
+ }
+
+ /* 'set' takes precedence over 'clear' */
+ clear &= ~set;
+
+ /* always enable UART_MCR_OUT2, If we want to disable port,
+ * using IER instead.
+ */
+ urb_value = UART_MCR_OUT2 | port_priv->shadowMCR;
+
+ if (clear & TIOCM_DTR) {
+ urb_value &= ~UART_MCR_DTR;
+ dev_dbg(&dev->dev, "%s: port:%d clear DTR\n", __func__,
+ f81534_port_to_phy_index(port));
+ }
+
+ if (clear & TIOCM_RTS) {
+ urb_value &= ~UART_MCR_RTS;
+ dev_dbg(&dev->dev, "%s: port:%d clear RTS\n", __func__,
+ f81534_port_to_phy_index(port));
+
+ }
+
+ if (set & TIOCM_DTR) {
+ urb_value |= UART_MCR_DTR;
+ dev_dbg(&dev->dev, "%s: port:%d set DTR\n", __func__,
+ f81534_port_to_phy_index(port));
+
+ }
+
+ if (set & TIOCM_RTS) {
+ urb_value |= UART_MCR_RTS;
+ dev_dbg(&dev->dev, "%s: port:%d set RTS\n", __func__,
+ f81534_port_to_phy_index(port));
+ }
+
+ status = f81534_setregister(dev, f81534_port_to_phy_index(port),
+ MODEM_CONTROL_REGISTER, urb_value);
+ if (status < 0) {
+ dev_err(&port->dev,
+ "%s- Error from MODEM_CTRL urb: %i\n",
+ __func__, status);
+
+ mutex_unlock(&serial_priv->msr_mutex);
+ return status;
+ }
+
+ port_priv->shadowMCR = urb_value;
+ mutex_unlock(&serial_priv->msr_mutex);
+
+ return 0;
+}
+
+static int f81534_calc_custom_idx(struct usb_serial *serial, u32 *index)
+{
+ int idx, status;
+ u8 custom_data;
+ int offset;
+
+ for (idx = F81534_CUSTOM_MAX_IDX - 1; idx >= 0; --idx) {
+ offset = F81534_CUSTOM_ADDRESS_START +
+ F81534_CUSTOM_DATA_SIZE * idx;
+ status =
+ f81534_read_data(serial, offset, 1,
+ &custom_data);
+ if (status) {
+ dev_err(&serial->dev->dev,
+ "%s: read error, idx:%d, status:%d\n",
+ __func__, idx, status);
+ return status;
+ }
+
+ /* if had custom setting, override
+ * 1st byte is a indicater, 0xff is empty, 0xf0 is had data
+ */
+
+ /* found */
+ if (custom_data == F81534_CUSTOM_VALID_TOKEN)
+ break;
+ }
+
+ *index = idx;
+ return 0;
+}
+
+static int f81534_calc_num_ports(struct usb_serial *serial)
+{
+ struct f81534_serial_private *serial_priv = NULL;
+ int index;
+ u8 num_port = 0;
+ int status;
+ unsigned char reserve[F81534_CUSTOM_DATA_SIZE + 1];
+
+ serial_priv = kzalloc(sizeof(*serial_priv), GFP_KERNEL);
+ if (!serial_priv)
+ return 0;
+
+ usb_set_serial_data(serial, serial_priv);
+
+ /* check had custom setting */
+ status = f81534_calc_custom_idx(serial, &serial_priv->custom_idx);
+ if (status) {
+ dev_err(&serial->dev->dev,
+ "%s: f81534_calc_custom_idx read failed!!\n",
+ __func__);
+ return 0;
+ }
+
+ /* read default board setting */
+ status = f81534_read_data(serial, F81534_RESERVE_ADDRESS_START,
+ F81534_NUM_PORT, reserve);
+ if (status) {
+ dev_err(&serial->dev->dev,
+ "%s: f81534_read_data read failed!!\n", __func__);
+ return 0;
+ }
+
+ /* if had custom setting, override
+ * 1st byte is a indicater, 0xff is empty, 0xf0f is had data
+ * skip with 1st data
+ */
+
+ if (serial_priv->custom_idx != F81534_CUSTOM_NO_CUSTOM_DATA) {
+ status = f81534_read_data(serial,
+ F81534_CUSTOM_ADDRESS_START +
+ F81534_CUSTOM_DATA_SIZE *
+ serial_priv->custom_idx + 1,
+ sizeof(reserve), reserve);
+ if (status) {
+ dev_err(&serial->dev->dev,
+ "%s: get custom data failed!!\n", __func__);
+ return 0;
+ }
+
+ dev_info(&serial->dev->dev,
+ "%s: read configure from block:%d\n", __func__,
+ serial_priv->custom_idx);
+ } else
+ dev_info(&serial->dev->dev, "%s: read configure default\n",
+ __func__);
+
+ for (index = 0; index < F81534_NUM_PORT; ++index) {
+ switch (reserve[index]) {
+ case 0x37:
+ case 0x38:
+ case 0x39:
+ num_port += 1;
+ break;
+ }
+ }
+
+ /* old style */
+ if (num_port) {
+ dev_dbg(&serial->dev->dev, "%s: old style wtih %d ports",
+ __func__, num_port);
+ return num_port;
+ }
+
+ /*new style, find all possible ports */
+ num_port = 0;
+ for (index = 0; index < F81534_NUM_PORT; ++index) {
+ if (reserve[index] & BIT(7))
+ continue;
+
+ num_port += 1;
+ }
+
+ if (num_port)
+ return num_port;
+
+ dev_err(&serial->dev->dev, "Read Failed!!, default 4 ports\n");
+ return 4; /* nothing found */
+}
+
+static void f81534_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port,
+ struct ktermios *old_termios)
+{
+ struct usb_device *dev = port->serial->dev;
+ struct f81534_port_private *port_priv;
+ u32 baud;
+ u16 new_lcr = 0;
+ int status;
+
+ port_priv = usb_get_serial_port_data(port);
+
+ if (C_BAUD(tty) == B0)
+ f81534_update_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
+ else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
+ f81534_update_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
+
+ if (C_PARENB(tty)) {
+ new_lcr |= UART_LCR_PARITY;
+
+ if (!C_PARODD(tty))
+ new_lcr |= UART_LCR_EPAR;
+
+ if (C_CMSPAR(tty))
+ new_lcr |= UART_LCR_SPAR;
+ }
+
+ if (C_CSTOPB(tty))
+ new_lcr |= UART_LCR_STOP;
+
+ switch (C_CSIZE(tty)) {
+ case CS5:
+ new_lcr |= UART_LCR_WLEN5;
+ break;
+ case CS6:
+ new_lcr |= UART_LCR_WLEN6;
+ break;
+ case CS7:
+ new_lcr |= UART_LCR_WLEN7;
+ break;
+ default:
+ case CS8:
+ new_lcr |= UART_LCR_WLEN8;
+ break;
+ }
+
+ baud = tty_get_baud_rate(tty);
+
+ if (baud) {
+ if ((baud == 1000000) || (baud > F81534_MAX_BAUDRATE)) {
+ if (old_termios)
+ baud = old_termios->c_ospeed;
+ else
+ baud = F81534_DEFAULT_BAUD_RATE;
+ }
+
+ dev_dbg(&dev->dev, "%s-baud: %d\n", __func__, baud);
+ tty_encode_baud_rate(tty, baud, baud);
+
+ port_priv->currentBaudRate = baud;
+ }
+
+ if (C_CRTSCTS(tty) && baud) {
+ dev_dbg(&dev->dev, "%s: port:%d CRTSCTS\n", __func__,
+ f81534_port_to_phy_index(port));
+ f81534_update_mctrl(port, TIOCM_RTS, 0);
+ }
+
+ port_priv->shadowLCR = new_lcr;
+ status =
+ f81534_set_port_config(dev, f81534_port_to_phy_index(port), port,
+ port_priv->currentBaudRate, new_lcr);
+ if (status < 0)
+ dev_err(&port->dev, "%s - f81534_set_port_config failed: %i\n",
+ __func__, status);
+
+}
+
+static int f81534_port_enable(struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ u16 device_port = f81534_port_to_phy_index(port);
+ u8 value;
+ int status;
+
+ /* Enable all interrupts of this port */
+ value = UART_IER_MSI | UART_IER_RLSI |
+ UART_IER_THRI | UART_IER_RDI;
+
+ status = f81534_setregister(serial->dev, device_port,
+ INTERRUPT_ENABLE_REGISTER,
+ value);
+ if (status) {
+ dev_err(&port->dev, "%s: failed, %d\n", __func__, __LINE__);
+ return status;
+ }
+
+ return 0;
+}
+
+static int f81534_port_disable(struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ u16 device_port = f81534_port_to_phy_index(port);
+ u8 value;
+ int status;
+
+ /* Disable all interrupts of this port */
+ value = 0;
+
+ status = f81534_setregister(serial->dev, device_port,
+ INTERRUPT_ENABLE_REGISTER,
+ value);
+ if (status) {
+ dev_err(&port->dev, "%s: failed, %d\n", __func__, __LINE__);
+ return status;
+ }
+
+ return 0;
+}
+
+static int f81534_prepare_gpio(struct usb_serial_port *port)
+{
+ struct f81534_port_private *port_priv =
+ usb_get_serial_port_data(port);
+ char *name = kmalloc(32, GFP_KERNEL);
+ int idx = port->minor;
+
+ int rc;
+
+ if (!name)
+ return -ENOMEM;
+
+ memcpy(&port_priv->f81534_gpio_chip,
+ &f81534_gpio_chip_templete,
+ sizeof(f81534_gpio_chip_templete));
+
+ sprintf(name, "%s-%d", IC_NAME, idx);
+
+ port_priv->f81534_gpio_chip.label = name;
+ port_priv->f81534_gpio_chip.dev = &port->dev;
+
+ rc = gpiochip_add(&port_priv->f81534_gpio_chip);
+ if (rc) {
+ kfree(name);
+ dev_err(&port->dev, "%s: f81534_prepare_gpio failed:%d\n",
+ __func__, rc);
+ return rc;
+ }
+
+ return 0;
+}
+
+static int f81534_release_gpio(struct usb_serial_port *port)
+{
+ struct f81534_port_private *port_priv =
+ usb_get_serial_port_data(port);
+
+ gpiochip_remove(&port_priv->f81534_gpio_chip);
+ kfree(port_priv->f81534_gpio_chip.names);
+ return 0;
+}
+
+static int f81534_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ int result = 0;
+ int status;
+ unsigned long flags;
+ struct usb_serial *serial = port->serial;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(serial);
+
+ status = f81534_port_enable(port);
+ if (status)
+ return status;
+
+ if (tty)
+ f81534_set_termios(tty, port, &tty->termios);
+
+ if (atomic_inc_return(&serial_priv->current_active) != 1)
+ return 0;
+
+ /* First open, we need register the only 1 read urb
+ * and the following code is referenced from
+ * usb_serial_generic_open()
+ */
+
+ /* clear the throttle flags */
+ spin_lock_irqsave(&port->lock, flags);
+ port->throttled = 0;
+ port->throttle_req = 0;
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ /* We'll register port 0 bulkin only once, It'll take all port read
+ * and information.
+ */
+ result = usb_serial_generic_submit_read_urbs(serial->port[0],
+ GFP_KERNEL);
+ return result;
+}
+
+static void f81534_close(struct usb_serial_port *port)
+{
+ int i;
+ unsigned long flags;
+ struct usb_serial *serial = port->serial;
+ struct usb_serial_port *port0 = serial->port[0];
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(serial);
+
+ f81534_port_disable(port);
+
+ /* referenced from usb_serial_generic_close() */
+ for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i)
+ usb_kill_urb(port->write_urbs[i]);
+
+ spin_lock_irqsave(&port->lock, flags);
+ kfifo_reset_out(&port->write_fifo);
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ /* dont need to do anything, some port is actived */
+ if (atomic_dec_return(&serial_priv->current_active) != 0)
+ return;
+
+ /* kill all read urbs when no ports are actived */
+ for (i = 0; i < ARRAY_SIZE(port0->read_urbs); ++i)
+ usb_kill_urb(port0->read_urbs[i]);
+}
+
+static void f81534_disconnect(struct usb_serial *serial)
+{
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(serial);
+
+ dev_dbg(&serial->dev->dev, "%s\n", __func__);
+ kfree(serial_priv);
+}
+
+static int f81534_get_serial_info(struct usb_serial_port *port,
+ struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+
+ if (!retinfo)
+ return -EFAULT;
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ tmp.type = PORT_16550A;
+ tmp.line = port->minor;
+ tmp.port = port->port_number;
+ tmp.baud_base = 115200;
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+
+ return 0;
+}
+
+#define READ_AND_SET_NORMAL(dev, register, mask, value) \
+ ({ \
+ int status_tmp = 0 ; \
+ do { \
+ char *err_str = "%s - error: %x, status: %d\n"; \
+ u8 urb_value_tmp = 0; \
+ status_tmp = f81534_get_normal_register(dev, \
+ register, &urb_value_tmp); \
+ if (status_tmp < 0) { \
+ dev_err(&dev->dev, \
+ err_str, \
+ __func__, \
+ register, \
+ status_tmp); \
+ break; \
+ }; \
+ \
+ if ((value) != 0) \
+ urb_value_tmp |= \
+ ((1L << mask) & (value)) ; \
+ else \
+ urb_value_tmp &= \
+ ~(1L << mask); \
+ \
+ status_tmp = f81534_set_normal_register(dev, \
+ register, \
+ urb_value_tmp); \
+ \
+ if (status_tmp < 0) { \
+ dev_err(&dev->dev, \
+ err_str, \
+ __func__, \
+ register, status_tmp); \
+ break; \
+ }; \
+ } while (0); \
+ status_tmp; \
+ })
+
+static int f81534_switch_gpio_mode(struct usb_serial_port
+ *serial_port, int mode)
+{
+ int x = f81534_port_to_phy_index(serial_port);
+ int y = 0;
+ int status;
+ int val;
+ struct usb_device *dev = serial_port->serial->dev;
+ struct io_map_value *request_mode =
+ f81534_mode_control[(mode >= eModeInvalid) ? eModeRS232 : mode];
+
+ struct pin_data *m1 = &request_mode->port[x].m1;
+ struct pin_data *m2 = &request_mode->port[x].m2;
+ struct pin_data *sd = &request_mode->port[x].sd;
+
+ struct pin_data *pins[3] = { m1, m2, sd };
+
+ if (mode >= 8)
+ return -EINVAL;
+
+ for (y = 0; y < 3; ++y) {
+ val = pins[y]->port_io.reg_bit ? 0xff : 0x00;
+ status = READ_AND_SET_NORMAL(dev,
+ pins[y]->port_io.reg_address,
+ pins[y]->port_io.reg_offset,
+ val);
+ if (status) {
+ dev_err(&serial_port->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+ }
+
+ return 0;
+}
+
+
+
+static int f81534_set_port_mode(struct usb_serial_port *port,
+ enum eUartMode eMode)
+{
+ int status;
+ u8 urb_value;
+ struct f81534_port_private *port_priv = usb_get_serial_port_data(port);
+
+ if (eMode > eModeInvalid)
+ return -1;
+
+ if (eMode != eModeInvalid) {
+ int data = 1;
+
+ status = f81534_getregister(port->serial->dev,
+ f81534_port_to_phy_index(port),
+ CLK_SEL_REGISTER,
+ &urb_value);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ urb_value &= ~(data << 4);
+ urb_value &= ~(data << 5);
+
+ switch (port_priv->port_pin_data.eForceUartMode) {
+ case eModeRS232:
+ case eModeShutdown:
+ case eModeRS232_coexist:
+ break;
+
+ case eModeRS485:
+ urb_value |= (data << 4);
+ urb_value |= (data << 5);
+ dev_dbg(&port->dev,
+ "%s: eModeRS485 urb:%x\n",
+ __func__,
+ urb_value);
+ break;
+
+ default:
+ urb_value |= (data << 4);
+ dev_dbg(&port->dev, "%s others urb:%x\n", __func__,
+ urb_value);
+ break;
+
+ }
+
+ status = f81534_setregister(port->serial->dev,
+ f81534_port_to_phy_index(port),
+ CLK_SEL_REGISTER,
+ urb_value);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: failed, %d\n",
+ __func__, __LINE__);
+ return status;
+ }
+
+ }
+
+ port_priv->port_pin_data.eForceUartMode = eMode;
+ return 0;
+}
+
+
+int f81534_ioctl_set_rs485(struct usb_serial_port *port,
+ struct serial_rs485 __user *arg)
+{
+
+ struct serial_rs485 data;
+ struct f81534_port_private *port_priv = usb_get_serial_port_data(port);
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+ struct usb_device *usb_dev = port->serial->dev;
+ u16 device_port = f81534_port_to_phy_index(port);
+ int status;
+
+ status = mutex_lock_interruptible(
+ &serial_priv->change_mode_mutex);
+ if (status) {
+ dev_info(&port->dev, "%s: interrupted!\n", __func__);
+ return status;
+ }
+
+ status = copy_from_user(&data, (struct serial_rs485 __user *)arg,
+ sizeof(data));
+ if (status) {
+ status = -EFAULT;
+ goto finish;
+ }
+
+ if (data.flags & SER_RS485_ENABLED) {
+ if (data.flags & SER_RS485_RTS_ON_SEND) {
+ dev_dbg(&port->dev, "%s: eModeRS485_1\n", __func__);
+ port_priv->port_pin_data.eForceUartMode = eModeRS485_1;
+ } else {
+ dev_dbg(&port->dev, "%s: eModeRS485\n", __func__);
+ port_priv->port_pin_data.eForceUartMode = eModeRS485;
+ }
+ } else {
+ dev_dbg(&port->dev, "%s: eModeRS232\n", __func__);
+ port_priv->port_pin_data.eForceUartMode = eModeRS232;
+ }
+
+ status = f81534_set_port_config(usb_dev, device_port, port,
+ port_priv->currentBaudRate,
+ port_priv->shadowLCR);
+ if (status) {
+ dev_err(&usb_dev->dev, "%s: set port error!!\n", __func__);
+ goto finish;
+ }
+
+ status = f81534_save_configure_data(port);
+
+finish:
+ mutex_unlock(&serial_priv->change_mode_mutex);
+ f81534_wakeup_all_port(port->serial);
+
+ return status;
+}
+
+static int f81534_ioctl_get_rs485(struct usb_serial_port *port,
+ struct serial_rs485 __user *arg)
+{
+ int status;
+ struct serial_rs485 data;
+ struct f81534_port_private *port_priv = usb_get_serial_port_data(port);
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+
+ status = mutex_lock_interruptible(
+ &serial_priv->change_mode_mutex);
+ if (status) {
+ dev_info(&port->dev, "%s: interrupted!\n", __func__);
+ return status;
+ }
+
+ memset(&data, 0, sizeof(data));
+
+ switch (port_priv->port_pin_data.eForceUartMode) {
+ case eModeRS485:
+ dev_dbg(&port->dev, "%s: eModeRS485\n", __func__);
+ data.flags = SER_RS485_ENABLED;
+ break;
+ case eModeRS485_1:
+ dev_dbg(&port->dev, "%s: eModeRS485_1\n", __func__);
+ data.flags = SER_RS485_ENABLED | SER_RS485_RTS_ON_SEND;
+ break;
+ default:
+ dev_dbg(&port->dev, "%s: eModeRS232\n", __func__);
+ break;
+ }
+
+ if (copy_to_user((struct serial_rs485 *)arg,
+ &data, sizeof(struct serial_rs485)))
+ status = -EFAULT;
+
+ mutex_unlock(&serial_priv->change_mode_mutex);
+ f81534_wakeup_all_port(port->serial);
+
+ return status;
+}
+
+static int f81534_ioctl(struct tty_struct *tty, unsigned int cmd,
+ unsigned long arg)
+{
+ struct usb_serial_port *port = tty->driver_data;
+
+ switch (cmd) {
+ case TIOCGRS485:
+ return f81534_ioctl_get_rs485(port,
+ (struct serial_rs485 __user *)
+ arg);
+
+ case TIOCSRS485:
+ return f81534_ioctl_set_rs485(port,
+ (struct serial_rs485 __user *)
+ arg);
+
+ case TIOCGSERIAL:
+ return f81534_get_serial_info(port,
+ (struct serial_struct __user *)
+ arg);
+ default:
+ break;
+ }
+
+ return -ENOIOCTLCMD;
+}
+
+static void f81534_process_read_urb(struct urb *urb)
+{
+ struct usb_serial *serial;
+ struct f81534_serial_private *serial_priv;
+ struct usb_serial_port *port = NULL;
+ struct f81534_port_private *port_priv = NULL;
+ unsigned char *ch;
+ u8 lsr = 0;
+ int i, j;
+ int len = urb->actual_length;
+ int datalen = 0;
+ int tty_port_num = 0;
+ int phy_port_num = 0;
+ bool msr_avail;
+ u8 *msr;
+ u8 old_msr;
+ struct tty_struct *tty;
+
+ /* The block layout is max with 4x128 Bytes, per 128 Bytes
+ * for a port.
+ * index 0: port phy idx (e.g., 0,1,2,3),
+ * index 1: It's could be
+ * F81534_TOKEN_RECEIVE
+ * F81534_TOKEN_TX_EMPTY
+ * F81534_TOKEN_MSR_CHANGE
+ * index 2: serial in size (data+lsr, must be even)
+ * index 3: current MSR with device read
+ * index 4~127: serial in data block (data+lsr, must be even)
+ */
+
+ if (!len)
+ return;
+
+ port = urb->context;
+ ch = urb->transfer_buffer;
+ serial = port->serial;
+ serial_priv = usb_get_serial_data(serial);
+
+ for (i = 0; i < urb->actual_length; i++) {
+ ch = (unsigned char *)urb->transfer_buffer + i;
+ j = i / F81534_RECEIVE_BLOCK_SIZE;
+
+ if (i == (1 + j * F81534_RECEIVE_BLOCK_SIZE)) {
+ msr_avail = true;
+ msr = (unsigned char *)(ch + 2);
+
+ if (*ch == F81534_TOKEN_TX_EMPTY) {
+ /* tx empty */
+ spin_lock(&serial_priv->write_urb_lock);
+ serial_priv->phy_port_in_use[phy_port_num] =
+ false;
+ spin_unlock(&serial_priv->write_urb_lock);
+
+ usb_serial_port_softint(port);
+
+ /*no real data, skip this block */
+ i += F81534_RECEIVE_BLOCK_SIZE - 2;
+
+ } else if (*ch == F81534_TOKEN_RECEIVE) {
+ /* 0x01 received serial data */
+
+ tty = tty_port_tty_get(&port->port);
+ if (tty) {
+ /* port is opened, dont skip this! */
+ tty_kref_put(tty);
+ } else {
+ /* port is not opend, skip this
+ * block
+ */
+ i += F81534_RECEIVE_BLOCK_SIZE - 2;
+ }
+
+ } else if (*ch == F81534_TOKEN_MSR_CHANGE) {
+ /* msr changed */
+ /*no real data, skip this block */
+ i += F81534_RECEIVE_BLOCK_SIZE - 2;
+ } else {
+ /*no real data, skip this block */
+ i += F81534_RECEIVE_BLOCK_SIZE - 2;
+ msr_avail = false;
+
+ dev_err(&port->dev, "%s %d known cmd: %x\n",
+ __func__, __LINE__, *ch);
+ }
+
+ if (!msr_avail)
+ continue;
+
+ spin_lock(&serial_priv->msr_lock);
+
+ /* The MSR information can be get with any
+ * 'correct' block data, but it's not worked as 16550A
+ * our MCU will reported newest or current data.
+ *
+ * We maybe received the same MSR. e.g.,
+ * received MSR 0x11 and received 0x11 again.
+ *
+ * So we'll not use UART_MSR_ANY_DELTA to do check,
+ * we directly compare their value.
+ */
+ if (*msr ==
+ serial_priv->shadowMSR[phy_port_num]) {
+ spin_unlock(&serial_priv->msr_lock);
+ continue;
+ }
+
+ old_msr = serial_priv->shadowMSR[phy_port_num];
+ serial_priv->shadowMSR[phy_port_num] = *msr;
+ serial_priv->msr_time[phy_port_num] = jiffies;
+
+ spin_unlock(&serial_priv->msr_lock);
+
+ dev_dbg(&port->dev,
+ "%s: DCD Changed: port %d from %x to %x\n",
+ __func__, phy_port_num, old_msr,
+ *msr);
+
+ f81534_update_msr(port, msr);
+
+ tty = tty_port_tty_get(&port->port);
+ if (!tty)
+ continue;
+
+ usb_serial_handle_dcd_change(port,
+ port->port.tty,
+ (*msr) & UART_MSR_DCD);
+ tty_kref_put(tty);
+ continue;
+ }
+
+ if (i == (j * F81534_RECEIVE_BLOCK_SIZE)) {
+ phy_port_num = *ch;
+ tty_port_num =
+ f81534_phy_to_logic_port(serial, phy_port_num);
+ port = serial->port[tty_port_num];
+ port_priv = usb_get_serial_port_data(port);
+ lsr = 0;
+ continue;
+ }
+
+ if (i == (2 + j * F81534_RECEIVE_BLOCK_SIZE)) {
+ /* the report format is data,lsr,data,lsr ...
+ * so we need to half size for 'real' data
+ */
+ datalen = *ch / 2;
+ continue;
+ }
+
+ if (i < (4 + j * F81534_RECEIVE_BLOCK_SIZE))
+ continue;
+
+ if (((i % 2) == 1) &&
+ (i > (4 + j * F81534_RECEIVE_BLOCK_SIZE))) {
+ /* collection with LSR datas */
+ lsr |= *ch;
+ continue;
+ }
+
+ if (datalen == 0) {
+ /* receive data complete set i to next block start */
+ i = (j + 1) * F81534_RECEIVE_BLOCK_SIZE - 1;
+
+ tty = tty_port_tty_get(&port->port);
+ if (!tty)
+ continue;
+
+ if (UART_LSR_OE & lsr)
+ tty_insert_flip_char(&port->port, 0,
+ TTY_OVERRUN);
+
+ tty_flip_buffer_push(&port->port);
+
+ if (port_priv &&
+ (lsr & UART_LSR_BRK_ERROR_BITS)) {
+ dev_info(&port->dev,
+ "phy_port_num: %d, lsr: %x\n",
+ phy_port_num, lsr);
+ f81534_update_lsr(port, &lsr);
+ }
+
+ tty_kref_put(tty);
+
+ continue;
+ }
+
+ tty_buffer_request_room(&port->port, 1);
+ tty_insert_flip_string(&port->port, ch, 1);
+ datalen--;
+ }
+}
+
+static int f81534_setup_urbs(struct usb_serial *serial)
+{
+ int status;
+ int i = 0;
+ u8 ep0_in_address;
+ int j;
+ int buffer_size;
+ struct usb_serial_port *port = NULL;
+
+ for (i = 0; i < serial->num_ports; ++i) {
+ ep0_in_address =
+ serial->port[0]->bulk_out_endpointAddress;
+ buffer_size = serial->port[0]->bulk_out_size;
+ port = serial->port[i];
+
+ if (port->bulk_out_buffer) {
+ /* allocated by generic system */
+ continue;
+ }
+
+ /* In our system architecture, we had 4 or 2 serial ports,
+ * but only get 1 set of bulk in/out endpoints.
+ *
+ * The usb-serial subsystem will generate port 0 data,
+ * but port 2/3/4 will not. It's will generate by following
+ * code
+ */
+ if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL))
+ goto failed;
+
+ port->bulk_out_size = buffer_size;
+ port->bulk_out_endpointAddress = ep0_in_address;
+
+ for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j) {
+ set_bit(j, &port->write_urbs_free);
+ port->write_urbs[j] = usb_alloc_urb(0, GFP_KERNEL);
+ if (!port->write_urbs[j])
+ goto failed;
+ port->bulk_out_buffers[j] = kmalloc(buffer_size,
+ GFP_KERNEL);
+ if (!port->bulk_out_buffers[j])
+ goto failed;
+ usb_fill_bulk_urb(port->write_urbs[j],
+ serial->dev,
+ usb_sndbulkpipe(serial->dev,
+ ep0_in_address),
+ port->bulk_out_buffers[j],
+ buffer_size,
+ serial->type->write_bulk_callback,
+ port);
+ }
+
+ port->write_urb = port->write_urbs[0];
+ port->bulk_out_buffer = port->bulk_out_buffers[0];
+ }
+
+ return 0;
+
+failed:
+ return status;
+}
+
+static int f81534_save_configure_data(struct usb_serial_port *port)
+{
+ int status;
+ int count;
+ int phy;
+ int gpio_address, uart_address;
+ int offset;
+ bool reConfigure = false;
+ u8 uart_mode, gpio_mode;
+ u8 data[F81534_RESERVE_SIZE + 1];
+ u8 tmp[F81534_RESERVE_SIZE];
+
+ struct usb_serial *serial = port->serial;
+ struct f81534_port_private *port_priv;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+
+ /* compare mem with ic data */
+ for (count = 0; count < serial->num_ports; ++count) {
+ port_priv = usb_get_serial_port_data(serial->port[count]);
+ phy = f81534_logic_to_phy_port(serial, count);
+
+ if (!port_priv) {
+ dev_info(&port->dev,
+ "%s: port_priv=NULL phy:%d!!\n",
+ __func__, phy);
+ continue;
+ }
+
+ if (serial_priv->custom_idx == F81534_CUSTOM_NO_CUSTOM_DATA) {
+ uart_address = F81534_RESERVE_ADDRESS_START + phy;
+ gpio_address = F81534_RESERVE_ADDRESS_START + phy +
+ F81534_CONF_SIZE;
+ } else {
+ /* if had custom setting, override
+ * 1st byte is a indicater, 0xff is empty,
+ * 0xf0 is had data. Skip with 1st data
+ */
+
+ uart_address = F81534_CUSTOM_ADDRESS_START +
+ serial_priv->custom_idx * F81534_CUSTOM_DATA_SIZE+
+ phy + F81534_CONF_OFFSET;
+
+ gpio_address = F81534_CUSTOM_ADDRESS_START +
+ serial_priv->custom_idx * F81534_CUSTOM_DATA_SIZE +
+ phy + F81534_CONF_SIZE + F81534_CONF_OFFSET;
+ }
+
+ status = f81534_read_data(port->serial, uart_address,
+ 1, &uart_mode);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: read uart config failed: index:%x\n",
+ __func__, uart_address);
+ return status;
+ }
+
+ status = f81534_read_data(port->serial, gpio_address,
+ 1, &gpio_mode);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: read gpio config failed: index:%x\n",
+ __func__, gpio_address);
+ return status;
+ }
+
+ if (port_priv->port_pin_data.eGPIOMode != gpio_mode)
+ reConfigure = true;
+
+ /* check uart flag */
+ if (port_priv->port_pin_data.eForceUartMode == eModeRS232) {
+ if ((uart_mode & F81534_MODE_MASK) !=
+ F81534_RS232_FLAG)
+ reConfigure = true;
+ } else if (port_priv->port_pin_data.eForceUartMode ==
+ eModeRS485_1) {
+ if ((uart_mode & F81534_MODE_MASK) !=
+ F81534_RS485_1_FLAG)
+ reConfigure = true;
+ } else if (port_priv->port_pin_data.eForceUartMode ==
+ eModeRS485) {
+ if ((uart_mode & F81534_MODE_MASK) !=
+ F81534_RS485_FLAG)
+ reConfigure = true;
+ } else
+ reConfigure = true;
+
+ if (reConfigure)
+ break;
+ }
+
+ if (serial_priv->custom_idx == F81534_CUSTOM_NO_CUSTOM_DATA) {
+ dev_info(&serial->dev->dev,
+ "%s: force to reconfigure\n", __func__);
+ } else if (!reConfigure) {
+ dev_info(&serial->dev->dev,
+ "%s: update-to-date\n", __func__);
+ return 0;
+ }
+
+ dev_info(&serial->dev->dev, "%s: updating\n", __func__);
+
+ /* next setting block */
+ serial_priv->custom_idx =
+ (serial_priv->custom_idx + 1) % F81534_CUSTOM_MAX_IDX;
+ dev_info(&serial->dev->dev, "%s: saving to block index:%d\n", __func__,
+ serial_priv->custom_idx);
+
+ /* erase when start block is 0 */
+ if (!serial_priv->custom_idx) {
+ dev_dbg(&serial->dev->dev, "%s: need erase\n", __func__);
+
+ /* erase */
+ status = f81534_erase_sector(serial,
+ F81534_CUSTOM_ADDRESS_START);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: f81534_erase_sector failed!! status:%d\n",
+ __func__, status);
+ return status;
+ }
+ } else {
+ dev_dbg(&serial->dev->dev,
+ "%s: dont need erase\n", __func__);
+ }
+
+ /* reprogram */
+
+ for (count = 0; count < serial->num_ports; ++count) {
+ port_priv = usb_get_serial_port_data(serial->port[count]);
+ phy = f81534_logic_to_phy_port(serial, count);
+
+ gpio_mode = port_priv->port_pin_data.eGPIOMode;
+ serial_priv->reserve_data[phy + F81534_CONF_SIZE] =
+ gpio_mode;
+ serial_priv->reserve_data[phy] &= ~(F81534_MODE_MASK);
+
+ /* check uart flag */
+ if (port_priv->port_pin_data.eForceUartMode == eModeRS232) {
+ serial_priv->reserve_data[phy] |=
+ F81534_RS232_FLAG;
+ } else if (port_priv->port_pin_data.eForceUartMode ==
+ eModeRS485_1) {
+ serial_priv->reserve_data[phy] |=
+ F81534_RS485_1_FLAG;
+ } else if (port_priv->port_pin_data.eForceUartMode ==
+ eModeRS485) {
+ serial_priv->reserve_data[phy] |=
+ F81534_RS485_FLAG;
+ } else {
+ dev_err(&serial->dev->dev,
+ "%s: write error!! mode:%d\n",
+ __func__,
+ port_priv->port_pin_data.eForceUartMode);
+ }
+
+ dev_info(&serial->dev->dev,
+ "%s: port:%d uart_mode:%x, gpio_mode:%x\n", __func__,
+ count, serial_priv->reserve_data[phy + 0], gpio_mode);
+ }
+
+ /* 1st byte is a indicater, 0xff is empty, 0xf0 is had data
+ * only write 8 bytes of total 4 port uart & gpio mode
+ * so we need write 1+8 data
+ */
+
+ /* token of data exist */
+ data[0] = F81534_CUSTOM_VALID_TOKEN;
+ memcpy(&data[1], serial_priv->reserve_data,
+ F81534_RESERVE_SIZE);
+
+ offset = F81534_CUSTOM_ADDRESS_START +
+ F81534_CUSTOM_DATA_SIZE * serial_priv->custom_idx;
+
+ status = f81534_write_data(serial, offset, sizeof(data), data);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: f81534_write_data failed!! status:%d\n", __func__,
+ status);
+ return status;
+ }
+
+ /* recheck save & memory data */
+ memset(tmp, 0, sizeof(tmp));
+
+ status = f81534_read_data(serial,
+ F81534_CUSTOM_ADDRESS_START +
+ F81534_CUSTOM_DATA_SIZE *
+ serial_priv->custom_idx + 1,
+ sizeof(tmp), tmp);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: f81534_read_data failed!! status:%d\n",
+ __func__, status);
+ return status;
+ }
+
+ for (count = 0; count < F81534_RESERVE_SIZE; ++count) {
+ if (tmp[count] != serial_priv->reserve_data[count]) {
+ dev_err(&port->dev,
+ "%s:check data error, count:%d, data:%x %x\n",
+ __func__, count, tmp[count],
+ serial_priv->reserve_data[count]);
+ }
+ }
+
+ dev_dbg(&serial->dev->dev, "%s: complete\n", __func__);
+
+ return 0;
+}
+
+static int f81534_load_configure_data(struct usb_serial_port *port)
+{
+ int status;
+ unsigned char uart_flag, gpio_mode;
+ int device_port = f81534_port_to_phy_index(port);
+ struct f81534_port_private *port_priv = usb_get_serial_port_data(port);
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+
+ uart_flag = serial_priv->reserve_data[device_port];
+ gpio_mode = serial_priv->reserve_data[device_port + F81534_CONF_SIZE];
+
+ switch (uart_flag) {
+ /* old style setting */
+ case 0x37:
+ case 0x38:
+ case 0x39:
+ serial_priv->reserve_data[device_port] = F81534_RS232_FLAG;
+ gpio_mode =
+ serial_priv->reserve_data[device_port
+ + F81534_CONF_SIZE] =
+ eModeRS232;
+ port_priv->port_pin_data.eForceUartMode = eModeRS232;
+ port_priv->port_pin_data.eGPIOMode = eModeRS232;
+ dev_info(&port->dev,
+ "transceiver field with old style, upgrading\n");
+ break;
+
+ /* MP style setting */
+ default:
+ if (uart_flag & BIT(0)) { /* rs485 */
+ if (uart_flag & BIT(1)) /* Inv */
+ port_priv->port_pin_data.eForceUartMode =
+ eModeRS485;
+ else
+ port_priv->port_pin_data.eForceUartMode =
+ eModeRS485_1;
+ } else
+ port_priv->port_pin_data.eForceUartMode = eModeRS232;
+
+ break;
+ }
+
+ if ((gpio_mode >= eModeRS422) && (gpio_mode < eModeInvalid)) {
+ port_priv->port_pin_data.eGPIOMode = gpio_mode;
+ dev_dbg(&port->dev, "gpio set to %d\n", gpio_mode);
+ } else {
+ port_priv->port_pin_data.eGPIOMode = eModeRS232;
+ dev_info(&port->dev, "unknown gpio %d, setting to %d\n",
+ gpio_mode, eModeRS232);
+ }
+
+ status =
+ f81534_switch_gpio_mode(port, port_priv->port_pin_data.eGPIOMode);
+ if (status) {
+ dev_err(&port->dev,
+ "%s: f81534_switch_gpio_mode failed!! status:%d\n",
+ __func__, status);
+ return status;
+ }
+
+ return 0;
+}
+
+static void dump_configure(struct usb_serial *serial)
+{
+ unsigned char transceiver, mode;
+ int count;
+ int index;
+ int gpio_address, uart_address;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(serial);
+
+ index = serial_priv->custom_idx;
+
+ for (count = 0; count < 4; ++count) {
+ if (index == F81534_CUSTOM_NO_CUSTOM_DATA) {
+ uart_address = F81534_RESERVE_ADDRESS_START + count;
+ gpio_address = F81534_RESERVE_ADDRESS_START + count +
+ F81534_CONF_SIZE;
+ } else {
+
+ /* if had custom setting, override
+ * 1st byte is a indicater.
+ * 0xff is empty, 0xf0 is had data.
+ * read and skip with 1st data.
+ */
+
+ uart_address = F81534_CUSTOM_ADDRESS_START +
+ F81534_CUSTOM_DATA_SIZE * index + count +
+ F81534_CONF_OFFSET;
+
+ gpio_address = F81534_CUSTOM_ADDRESS_START +
+ F81534_CUSTOM_DATA_SIZE * index + count +
+ F81534_CONF_SIZE + F81534_CONF_OFFSET;
+ }
+
+ f81534_read_data(serial, uart_address, 1, &transceiver);
+ f81534_read_data(serial, gpio_address, 1, &mode);
+
+ dev_info(&serial->dev->dev,
+ "%s: port:%d uart_flag:%x gpio:%x\n", __func__,
+ count, transceiver, mode);
+ }
+}
+
+static int f81534_attach(struct usb_serial *serial)
+{
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(serial);
+ int status;
+ int i;
+ int offset;
+ int num_port = serial->num_ports;
+
+ serial_priv->serial = serial;
+ memset(serial_priv->port_mapping, F81534_UNUSED_PORT,
+ sizeof(serial_priv->port_mapping));
+
+ switch (num_port) {
+ case eIC_F81532:
+ case eIC_F81534:
+ serial_priv->ic_type = num_port;
+ dev_info(&serial->dev->dev, "%s detected\n",
+ m_ic_name[num_port]);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ for (i = 0; i < F81534_NUM_PORT; ++i)
+ serial_priv->port_mapping[i] = i;
+
+ switch (num_port) {
+ case 4:
+ break;
+ case 2:
+ serial_priv->port_mapping[1] = 3;
+ serial_priv->port_mapping[2] = F81534_UNUSED_PORT;
+ serial_priv->port_mapping[3] = F81534_UNUSED_PORT;
+ break;
+ case 1:
+ serial_priv->port_mapping[1] = F81534_UNUSED_PORT;
+ serial_priv->port_mapping[2] = F81534_UNUSED_PORT;
+ serial_priv->port_mapping[3] = F81534_UNUSED_PORT;
+ break;
+ default:
+ dev_err(&serial->dev->dev,
+ "%s: Cant determine ports: %d, error!!!\n",
+ __func__,
+ num_port);
+ status = -EINVAL;
+ goto failed;
+ }
+
+ for (i = 0; i < F81534_NUM_PORT; ++i) {
+ /* clear fifo when plug in */
+ f81534_setregister(serial->dev, i, FIFO_CONTROL_REGISTER,
+ UART_FCR_R_TRIG_11 |
+ UART_FCR_ENABLE_FIFO |
+ UART_FCR_CLEAR_RCVR |
+ UART_FCR_CLEAR_XMIT);
+
+ status = f81534_get_normal_register(serial->dev,
+ MSR_ACCESS_SHADOW_REG + i,
+ &serial_priv->shadowMSR[i]);
+ if (status) {
+ dev_err(&serial->dev->dev,
+ "%s f81534_get_normal_register:%x failed\n",
+ __func__, MSR_ACCESS_SHADOW_REG + i);
+ goto failed;
+ }
+
+ serial_priv->msr_time[i] = jiffies;
+ }
+
+ spin_lock_init(&serial_priv->write_urb_lock);
+ spin_lock_init(&serial_priv->msr_lock);
+ mutex_init(&serial_priv->msr_mutex);
+ mutex_init(&serial_priv->change_mode_mutex);
+ atomic_set(&serial_priv->current_active, 0);
+
+ status = f81534_setup_urbs(serial);
+ if (status != 0)
+ goto failed;
+
+ status = f81534_read_data(serial,
+ F81534_RESERVE_ADDRESS_START,
+ F81534_RESERVE_SIZE,
+ serial_priv->reserve_data);
+ if (status) {
+ dev_err(&serial->dev->dev, "%s read reserve data failed\n",
+ __func__);
+ goto failed;
+ }
+
+ /* if had custom setting, override
+ * 1st byte is a indicater, 0xff is empty, 0xf0 is had data
+ * skip with 1st data
+ */
+
+ if (serial_priv->custom_idx == F81534_CUSTOM_NO_CUSTOM_DATA)
+ return 0;
+
+ offset = F81534_CUSTOM_ADDRESS_START +
+ F81534_CUSTOM_DATA_SIZE * serial_priv->custom_idx + 1;
+ /* only read 8 bytes for mode & GPIO */
+ status = f81534_read_data(serial,
+ offset,
+ sizeof(serial_priv->reserve_data),
+ serial_priv->reserve_data);
+ if (status) {
+ dev_err(&serial->dev->dev,
+ "%s: get custom data failed, idx:%d, status:%d!!\n",
+ __func__, serial_priv->custom_idx, status);
+ goto failed;
+ }
+
+ return 0;
+
+failed:
+ kfree(serial_priv);
+ return status;
+}
+
+
+static int f81534_port_probe(struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ struct f81534_port_private *port_priv = NULL;
+ int status;
+
+ dev_dbg(&port->dev, "%s f81534_port_to_phy_index(port): %d",
+ __func__, f81534_port_to_phy_index(port));
+
+
+ port_priv = kzalloc(sizeof(*port_priv), GFP_KERNEL);
+ if (!port_priv)
+ return -ENOMEM;
+
+ usb_set_serial_port_data(port, port_priv);
+ port_priv->port = port;
+
+ atomic_set(&port_priv->gpio_active, 0);
+
+ status = f81534_prepare_gpio(port);
+ if (status)
+ goto port_fail;
+
+ status = f81534_load_configure_data(port);
+ if (status)
+ goto port_fail;
+
+ if ((serial->num_ports - 1) == f81534_port_index(port)) {
+ f81534_save_configure_data(port);
+ dump_configure(serial);
+ }
+
+ status = f81534_set_port_mode(port,
+ port_priv->port_pin_data.eForceUartMode);
+ if (status < 0) {
+ dev_err(&port->dev, "%s - initial setup failed (%i)\n",
+ __func__, f81534_port_to_phy_index(port));
+ goto port_fail;
+ }
+ return 0;
+
+port_fail:
+
+ dev_err(&port->dev, "%s: failed, %d\n",
+ __func__, status);
+ kfree(port_priv);
+ return status;
+}
+
+static int f81534_port_remove(struct usb_serial_port *port)
+{
+ struct f81534_port_private *port_priv;
+
+ dev_dbg(&port->dev, "%s\n", __func__);
+ f81534_release_gpio(port);
+
+ port_priv = usb_get_serial_port_data(port);
+ kfree(port_priv);
+
+ return 0;
+}
+
+static int f81534_tiocmget(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct f81534_port_private *port_priv = usb_get_serial_port_data(port);
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+ int r = 0;
+ int index = f81534_port_to_phy_index(port);
+ int count = F81534_TIOCGET_RETRY, result;
+ unsigned long current_jiffies = jiffies + 1;
+ unsigned long flags = 0;
+ u8 msr, mcr;
+
+ /* We'll not directly to read MSR/Shadow Register.
+ * If MSR has any change, the device will notice by bulk-in
+ * Please reference f81534_process_read_urb()
+ *
+ * This section will wait for 10*F81534_TIOCGET_RETRY msec to
+ * receive MSR change. We'll use old MSR value if H/W not change
+ * or not noticed.
+ */
+
+ while (count--) {
+ mutex_lock(&serial_priv->msr_mutex);
+ spin_lock_irqsave(&serial_priv->msr_lock, flags);
+
+ result =
+ time_after(current_jiffies, serial_priv->msr_time[index]);
+ msr = serial_priv->shadowMSR[index];
+ mcr = port_priv->shadowMCR;
+
+ spin_unlock_irqrestore(&serial_priv->msr_lock, flags);
+ mutex_unlock(&serial_priv->msr_mutex);
+
+ if (!result)
+ break;
+
+ /* wait for delayed MSR change from bulk-in */
+ if (schedule_timeout_interruptible(msecs_to_jiffies(10))) {
+ dev_info(&port->dev, "%s: breaked !!\n", __func__);
+ break;
+ }
+ }
+
+ r = (mcr & UART_MCR_DTR ? TIOCM_DTR : 0) |
+ (mcr & UART_MCR_RTS ? TIOCM_RTS : 0) |
+ (msr & UART_MSR_CTS ? TIOCM_CTS : 0) |
+ (msr & UART_MSR_DCD ? TIOCM_CAR : 0) |
+ (msr & UART_MSR_RI ? TIOCM_RI : 0) |
+ (msr & UART_MSR_DSR ? TIOCM_DSR : 0);
+
+ return r;
+}
+
+static int f81534_tiocmset(struct tty_struct *tty,
+ unsigned int set, unsigned int clear)
+{
+ struct usb_serial_port *port = tty->driver_data;
+
+ return f81534_update_mctrl(port, set, clear);
+}
+
+static void f81534_dtr_rts(struct usb_serial_port *port, int on)
+{
+ /* drop RTS and DTR */
+ if (on)
+ f81534_update_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0);
+ else
+ f81534_update_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS);
+}
+
+static void f81534_update_msr(struct usb_serial_port *port, unsigned char *ch)
+{
+ u8 newMSR = (u8) *ch;
+
+ if (newMSR & UART_MSR_ANY_DELTA) {
+ /* update input line counters */
+ if (newMSR & UART_MSR_DCTS)
+ port->icount.cts++;
+ if (newMSR & UART_MSR_DDSR)
+ port->icount.dsr++;
+ if (newMSR & UART_MSR_DDCD)
+ port->icount.dcd++;
+ if (newMSR & UART_MSR_TERI)
+ port->icount.rng++;
+ wake_up_interruptible(&port->port.delta_msr_wait);
+ }
+}
+
+static void f81534_update_lsr(struct usb_serial_port *port, unsigned char *ch)
+{
+ u8 newLSR = (u8) *ch;
+ struct async_icount *icount = &port->icount;
+
+ if (newLSR & UART_LSR_BI)
+ newLSR &= (u8) (UART_LSR_OE | UART_LSR_BI);
+
+ if (newLSR & UART_LSR_BRK_ERROR_BITS) {
+ if (newLSR & UART_LSR_BI)
+ icount->brk++;
+
+ if (newLSR & UART_LSR_OE)
+ icount->overrun++;
+
+ if (newLSR & UART_LSR_PE)
+ icount->parity++;
+
+ if (newLSR & UART_LSR_FE)
+ icount->frame++;
+ }
+}
+
+static int f81534_write_room(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct f81534_port_private *port_priv;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+ int port_num = f81534_port_to_phy_index(port);
+ unsigned long flags = 0;
+ int r;
+
+ port_priv = usb_get_serial_port_data(port);
+
+ spin_lock_irqsave(&serial_priv->write_urb_lock, flags);
+
+ if (serial_priv->phy_port_in_use[port_num])
+ r = 0;
+ else
+ r = m_f81534_max_tx_size;
+
+ spin_unlock_irqrestore(&serial_priv->write_urb_lock, flags);
+
+ return r;
+}
+
+int f81534_prepare_write_buffer(struct usb_serial_port *port,
+ void *dest, size_t size)
+{
+ unsigned char *ptr = (unsigned char *) dest;
+ int port_num = f81534_port_to_phy_index(port);
+ struct usb_serial *serial = port->serial;
+
+ WARN_ON(size != serial->port[0]->bulk_out_size);
+
+ if (size != F81534_WRITE_BUFFER_SIZE) {
+ WARN_ON(size != F81534_WRITE_BUFFER_SIZE);
+ return 0;
+ }
+
+ /* The block layout is fixed with 4x128 Bytes, per 128 Bytes
+ * for a port.
+ * index 0: port phy idx (e.g., 0,1,2,3)
+ * index 1: only F81534_TOKEN_WRITE
+ * index 2: serial out size
+ * index 3: fix to 0
+ * index 4~127: serial out data block
+ */
+
+ ptr[0] = 0;
+ ptr[128] = 1;
+ ptr[256] = 2;
+ ptr[384] = 3;
+ ptr[128 * port_num + 0] = port_num;
+ ptr[128 * port_num + 1] = F81534_TOKEN_WRITE;
+ ptr[128 * port_num + 3] = 0;
+ ptr[128 * port_num + 2] =
+ kfifo_out_locked(&port->write_fifo,
+ &ptr[128 * port_num + 4],
+ m_f81534_max_tx_size,
+ &port->lock);
+
+ return F81534_WRITE_BUFFER_SIZE;
+}
+
+static int f81534_write(struct tty_struct *tty,
+ struct usb_serial_port *port,
+ const unsigned char *buf, int count)
+{
+ int bytes_out = 0;
+ unsigned long flags;
+ bool bCouldWrite = true;
+ int port_num = f81534_port_to_phy_index(port);
+ int updating_data;
+ struct f81534_serial_private *serial_priv =
+ usb_get_serial_data(port->serial);
+
+ updating_data = mutex_is_locked(&serial_priv->change_mode_mutex);
+ if (updating_data) /*someone is changing setting */
+ return 0;
+
+ /* Dont send data to H/W if it is still working. */
+ spin_lock_irqsave(&serial_priv->write_urb_lock, flags);
+
+ if (serial_priv->phy_port_in_use[port_num])
+ bCouldWrite = false;
+ else
+ serial_priv->phy_port_in_use[port_num] = true;
+
+ spin_unlock_irqrestore(&serial_priv->write_urb_lock, flags);
+
+ if (bCouldWrite)
+ bytes_out = usb_serial_generic_write(tty,
+ port, buf, count);
+
+ return bytes_out;
+}
+
+static struct usb_serial_driver f81534_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = IC_NAME,
+ },
+ .description = DRIVER_DESC,
+ .id_table = id_table,
+ .open = f81534_open,
+ .close = f81534_close,
+ .write = f81534_write,
+ .write_room = f81534_write_room,
+ .calc_num_ports = f81534_calc_num_ports,
+ .attach = f81534_attach,
+ .disconnect = f81534_disconnect,
+ .port_probe = f81534_port_probe,
+ .port_remove = f81534_port_remove,
+ .dtr_rts = f81534_dtr_rts,
+ .process_read_urb = f81534_process_read_urb,
+ .ioctl = f81534_ioctl,
+ .tiocmget = f81534_tiocmget,
+ .tiocmset = f81534_tiocmset,
+ .prepare_write_buffer = f81534_prepare_write_buffer,
+ .set_termios = f81534_set_termios,
+};
+
+static struct usb_serial_driver *const serial_drivers[] = {
+ &f81534_device, NULL
+};
+
+module_usb_serial_driver(serial_drivers, id_table);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Peter Hong <Peter_Hong@xxxxxxxxxxxxx>");
+MODULE_AUTHOR("Tom Tsai <Tom_Tsai@xxxxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
--
1.9.1

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