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@@ -0,0 +1,986 @@
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+/*
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+ * USB Moxa UPORT 11x0 Serial Driver
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+ *
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+ * Copyright (C) 2007 MOXA Technologies Co., Ltd.
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+ * Copyright (C) 2015 Mathieu Othacehe <m.othacehe@gmail.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ *
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+ * Supports the following Moxa USB to serial converters:
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+ * UPort 1110, 1 port RS-232 USB to Serial Hub.
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+ * UPort 1130, 1 port RS-422/485 USB to Serial Hub.
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+ * UPort 1130I, 1 port RS-422/485 USB to Serial Hub with isolation
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+ * protection.
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+ * UPort 1150, 1 port RS-232/422/485 USB to Serial Hub.
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+ * UPort 1150I, 1 port RS-232/422/485 USB to Serial Hub with isolation
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+ * protection.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/firmware.h>
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+#include <linux/jiffies.h>
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+#include <linux/serial.h>
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+#include <linux/serial_reg.h>
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+#include <linux/slab.h>
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+#include <linux/spinlock.h>
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+#include <linux/mutex.h>
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+#include <linux/tty.h>
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+#include <linux/tty_driver.h>
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+#include <linux/tty_flip.h>
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+#include <linux/uaccess.h>
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+#include <linux/usb.h>
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+#include <linux/usb/serial.h>
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+
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+/* Vendor and product ids */
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+#define MXU1_VENDOR_ID 0x110a
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+#define MXU1_1110_PRODUCT_ID 0x1110
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+#define MXU1_1130_PRODUCT_ID 0x1130
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+#define MXU1_1150_PRODUCT_ID 0x1150
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+#define MXU1_1151_PRODUCT_ID 0x1151
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+#define MXU1_1131_PRODUCT_ID 0x1131
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+
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+/* Commands */
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+#define MXU1_GET_VERSION 0x01
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+#define MXU1_GET_PORT_STATUS 0x02
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+#define MXU1_GET_PORT_DEV_INFO 0x03
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+#define MXU1_GET_CONFIG 0x04
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+#define MXU1_SET_CONFIG 0x05
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+#define MXU1_OPEN_PORT 0x06
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+#define MXU1_CLOSE_PORT 0x07
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+#define MXU1_START_PORT 0x08
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+#define MXU1_STOP_PORT 0x09
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+#define MXU1_TEST_PORT 0x0A
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+#define MXU1_PURGE_PORT 0x0B
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+#define MXU1_RESET_EXT_DEVICE 0x0C
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+#define MXU1_GET_OUTQUEUE 0x0D
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+#define MXU1_WRITE_DATA 0x80
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+#define MXU1_READ_DATA 0x81
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+#define MXU1_REQ_TYPE_CLASS 0x82
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+
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+/* Module identifiers */
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+#define MXU1_I2C_PORT 0x01
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+#define MXU1_IEEE1284_PORT 0x02
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+#define MXU1_UART1_PORT 0x03
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+#define MXU1_UART2_PORT 0x04
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+#define MXU1_RAM_PORT 0x05
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+
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+/* Modem status */
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+#define MXU1_MSR_DELTA_CTS 0x01
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+#define MXU1_MSR_DELTA_DSR 0x02
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+#define MXU1_MSR_DELTA_RI 0x04
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+#define MXU1_MSR_DELTA_CD 0x08
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+#define MXU1_MSR_CTS 0x10
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+#define MXU1_MSR_DSR 0x20
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+#define MXU1_MSR_RI 0x40
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+#define MXU1_MSR_CD 0x80
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+#define MXU1_MSR_DELTA_MASK 0x0F
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+#define MXU1_MSR_MASK 0xF0
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+
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+/* Line status */
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+#define MXU1_LSR_OVERRUN_ERROR 0x01
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+#define MXU1_LSR_PARITY_ERROR 0x02
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+#define MXU1_LSR_FRAMING_ERROR 0x04
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+#define MXU1_LSR_BREAK 0x08
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+#define MXU1_LSR_ERROR 0x0F
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+#define MXU1_LSR_RX_FULL 0x10
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+#define MXU1_LSR_TX_EMPTY 0x20
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+
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+/* Modem control */
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+#define MXU1_MCR_LOOP 0x04
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+#define MXU1_MCR_DTR 0x10
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+#define MXU1_MCR_RTS 0x20
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+
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+/* Mask settings */
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+#define MXU1_UART_ENABLE_RTS_IN 0x0001
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+#define MXU1_UART_DISABLE_RTS 0x0002
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+#define MXU1_UART_ENABLE_PARITY_CHECKING 0x0008
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+#define MXU1_UART_ENABLE_DSR_OUT 0x0010
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+#define MXU1_UART_ENABLE_CTS_OUT 0x0020
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+#define MXU1_UART_ENABLE_X_OUT 0x0040
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+#define MXU1_UART_ENABLE_XA_OUT 0x0080
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+#define MXU1_UART_ENABLE_X_IN 0x0100
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+#define MXU1_UART_ENABLE_DTR_IN 0x0800
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+#define MXU1_UART_DISABLE_DTR 0x1000
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+#define MXU1_UART_ENABLE_MS_INTS 0x2000
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+#define MXU1_UART_ENABLE_AUTO_START_DMA 0x4000
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+#define MXU1_UART_SEND_BREAK_SIGNAL 0x8000
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+
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+/* Parity */
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+#define MXU1_UART_NO_PARITY 0x00
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+#define MXU1_UART_ODD_PARITY 0x01
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+#define MXU1_UART_EVEN_PARITY 0x02
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+#define MXU1_UART_MARK_PARITY 0x03
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+#define MXU1_UART_SPACE_PARITY 0x04
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+
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+/* Stop bits */
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+#define MXU1_UART_1_STOP_BITS 0x00
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+#define MXU1_UART_1_5_STOP_BITS 0x01
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+#define MXU1_UART_2_STOP_BITS 0x02
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+
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+/* Bits per character */
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+#define MXU1_UART_5_DATA_BITS 0x00
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+#define MXU1_UART_6_DATA_BITS 0x01
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+#define MXU1_UART_7_DATA_BITS 0x02
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+#define MXU1_UART_8_DATA_BITS 0x03
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+
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+/* Operation modes */
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+#define MXU1_UART_232 0x00
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+#define MXU1_UART_485_RECEIVER_DISABLED 0x01
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+#define MXU1_UART_485_RECEIVER_ENABLED 0x02
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+
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+/* Pipe transfer mode and timeout */
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+#define MXU1_PIPE_MODE_CONTINUOUS 0x01
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+#define MXU1_PIPE_MODE_MASK 0x03
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+#define MXU1_PIPE_TIMEOUT_MASK 0x7C
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+#define MXU1_PIPE_TIMEOUT_ENABLE 0x80
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+
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+/* Config struct */
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+struct mxu1_uart_config {
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+ __be16 wBaudRate;
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+ __be16 wFlags;
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+ u8 bDataBits;
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+ u8 bParity;
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+ u8 bStopBits;
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+ char cXon;
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+ char cXoff;
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+ u8 bUartMode;
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+} __packed;
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+
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+/* Purge modes */
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+#define MXU1_PURGE_OUTPUT 0x00
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+#define MXU1_PURGE_INPUT 0x80
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+
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+/* Read/Write data */
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+#define MXU1_RW_DATA_ADDR_SFR 0x10
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+#define MXU1_RW_DATA_ADDR_IDATA 0x20
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+#define MXU1_RW_DATA_ADDR_XDATA 0x30
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+#define MXU1_RW_DATA_ADDR_CODE 0x40
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+#define MXU1_RW_DATA_ADDR_GPIO 0x50
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+#define MXU1_RW_DATA_ADDR_I2C 0x60
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+#define MXU1_RW_DATA_ADDR_FLASH 0x70
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+#define MXU1_RW_DATA_ADDR_DSP 0x80
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+
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+#define MXU1_RW_DATA_UNSPECIFIED 0x00
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+#define MXU1_RW_DATA_BYTE 0x01
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+#define MXU1_RW_DATA_WORD 0x02
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+#define MXU1_RW_DATA_DOUBLE_WORD 0x04
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+
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+struct mxu1_write_data_bytes {
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+ u8 bAddrType;
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+ u8 bDataType;
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+ u8 bDataCounter;
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+ __be16 wBaseAddrHi;
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+ __be16 wBaseAddrLo;
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+ u8 bData[0];
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+} __packed;
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+
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+/* Interrupt codes */
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+#define MXU1_CODE_HARDWARE_ERROR 0xFF
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+#define MXU1_CODE_DATA_ERROR 0x03
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+#define MXU1_CODE_MODEM_STATUS 0x04
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+
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+static inline int mxu1_get_func_from_code(unsigned char code)
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+{
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+ return code & 0x0f;
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+}
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+
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+/* Download firmware max packet size */
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+#define MXU1_DOWNLOAD_MAX_PACKET_SIZE 64
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+
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+/* Firmware image header */
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+struct mxu1_firmware_header {
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+ __le16 wLength;
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+ u8 bCheckSum;
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+} __packed;
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+
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+#define MXU1_UART_BASE_ADDR 0xFFA0
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+#define MXU1_UART_OFFSET_MCR 0x0004
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+
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+#define MXU1_BAUD_BASE 923077
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+
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+#define MXU1_TRANSFER_TIMEOUT 2
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+#define MXU1_DOWNLOAD_TIMEOUT 1000
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+#define MXU1_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
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+
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+struct mxu1_port {
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+ u8 msr;
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+ u8 mcr;
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+ u8 uart_mode;
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+ spinlock_t spinlock; /* Protects msr */
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+ struct mutex mutex; /* Protects mcr */
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+ bool send_break;
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+};
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+
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+struct mxu1_device {
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+ u16 mxd_model;
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+};
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+
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+static const struct usb_device_id mxu1_idtable[] = {
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+ { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
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+ { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
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+ { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
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+ { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
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+ { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
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+ { }
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+};
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+
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+MODULE_DEVICE_TABLE(usb, mxu1_idtable);
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+
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+/* Write the given buffer out to the control pipe. */
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+static int mxu1_send_ctrl_data_urb(struct usb_serial *serial,
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+ u8 request,
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+ u16 value, u16 index,
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+ void *data, size_t size)
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+{
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+ int status;
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+
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+ status = usb_control_msg(serial->dev,
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+ usb_sndctrlpipe(serial->dev, 0),
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+ request,
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+ (USB_DIR_OUT | USB_TYPE_VENDOR |
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+ USB_RECIP_DEVICE), value, index,
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+ data, size,
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+ USB_CTRL_SET_TIMEOUT);
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+ if (status < 0) {
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+ dev_err(&serial->interface->dev,
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+ "%s - usb_control_msg failed: %d\n",
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+ __func__, status);
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+ return status;
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+ }
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+
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+ if (status != size) {
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+ dev_err(&serial->interface->dev,
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+ "%s - short write (%d / %zd)\n",
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+ __func__, status, size);
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+ return -EIO;
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+ }
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+
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+ return 0;
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+}
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+
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+/* Send a vendor request without any data */
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+static int mxu1_send_ctrl_urb(struct usb_serial *serial,
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+ u8 request, u16 value, u16 index)
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+{
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+ return mxu1_send_ctrl_data_urb(serial, request, value, index,
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+ NULL, 0);
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+}
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+
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+static int mxu1_download_firmware(struct usb_serial *serial,
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+ const struct firmware *fw_p)
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+{
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+ int status = 0;
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+ int buffer_size;
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+ int pos;
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+ int len;
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+ int done;
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+ u8 cs = 0;
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+ u8 *buffer;
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+ struct usb_device *dev = serial->dev;
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+ struct mxu1_firmware_header *header;
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+ unsigned int pipe;
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+
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+ pipe = usb_sndbulkpipe(dev, serial->port[0]->bulk_out_endpointAddress);
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+
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+ buffer_size = fw_p->size + sizeof(*header);
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+ buffer = kmalloc(buffer_size, GFP_KERNEL);
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+ if (!buffer)
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+ return -ENOMEM;
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+
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+ memcpy(buffer, fw_p->data, fw_p->size);
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+ memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
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+
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+ for (pos = sizeof(*header); pos < buffer_size; pos++)
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+ cs = (u8)(cs + buffer[pos]);
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+
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+ header = (struct mxu1_firmware_header *)buffer;
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+ header->wLength = cpu_to_le16(buffer_size - sizeof(*header));
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+ header->bCheckSum = cs;
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+
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+ dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
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+
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+ for (pos = 0; pos < buffer_size; pos += done) {
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+ len = min(buffer_size - pos, MXU1_DOWNLOAD_MAX_PACKET_SIZE);
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+
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+ status = usb_bulk_msg(dev, pipe, buffer + pos, len, &done,
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+ MXU1_DOWNLOAD_TIMEOUT);
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+ if (status)
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+ break;
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+ }
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+
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+ kfree(buffer);
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+
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+ if (status) {
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+ dev_err(&dev->dev, "failed to download firmware: %d\n", status);
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+ return status;
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+ }
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+
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+ msleep_interruptible(100);
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+ usb_reset_device(dev);
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+
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+ dev_dbg(&dev->dev, "%s - download successful\n", __func__);
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+
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+ return 0;
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+}
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+
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+static int mxu1_port_probe(struct usb_serial_port *port)
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+{
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+ struct mxu1_port *mxport;
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+ struct mxu1_device *mxdev;
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+
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+ if (!port->interrupt_in_urb) {
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+ dev_err(&port->dev, "no interrupt urb\n");
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+ return -ENODEV;
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+ }
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+
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+ mxport = kzalloc(sizeof(struct mxu1_port), GFP_KERNEL);
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+ if (!mxport)
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+ return -ENOMEM;
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+
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+ spin_lock_init(&mxport->spinlock);
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+ mutex_init(&mxport->mutex);
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+
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+ mxdev = usb_get_serial_data(port->serial);
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+
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+ switch (mxdev->mxd_model) {
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+ case MXU1_1110_PRODUCT_ID:
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+ case MXU1_1150_PRODUCT_ID:
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+ case MXU1_1151_PRODUCT_ID:
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+ mxport->uart_mode = MXU1_UART_232;
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+ break;
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+ case MXU1_1130_PRODUCT_ID:
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+ case MXU1_1131_PRODUCT_ID:
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+ mxport->uart_mode = MXU1_UART_485_RECEIVER_DISABLED;
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+ break;
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+ }
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+
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+ usb_set_serial_port_data(port, mxport);
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+
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+ port->port.closing_wait =
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+ msecs_to_jiffies(MXU1_DEFAULT_CLOSING_WAIT * 10);
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+ port->port.drain_delay = 1;
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+
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+ return 0;
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+}
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+
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+static int mxu1_startup(struct usb_serial *serial)
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+{
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+ struct mxu1_device *mxdev;
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+ struct usb_device *dev = serial->dev;
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+ struct usb_host_interface *cur_altsetting;
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+ char fw_name[32];
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+ const struct firmware *fw_p = NULL;
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+ int err;
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+
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+ dev_dbg(&serial->interface->dev, "%s - product 0x%04X, num configurations %d, configuration value %d\n",
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|
|
+ __func__, le16_to_cpu(dev->descriptor.idProduct),
|
|
|
+ dev->descriptor.bNumConfigurations,
|
|
|
+ dev->actconfig->desc.bConfigurationValue);
|
|
|
+
|
|
|
+ /* create device structure */
|
|
|
+ mxdev = kzalloc(sizeof(struct mxu1_device), GFP_KERNEL);
|
|
|
+ if (!mxdev)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ usb_set_serial_data(serial, mxdev);
|
|
|
+
|
|
|
+ mxdev->mxd_model = le16_to_cpu(dev->descriptor.idProduct);
|
|
|
+
|
|
|
+ cur_altsetting = serial->interface->cur_altsetting;
|
|
|
+
|
|
|
+ /* if we have only 1 configuration, download firmware */
|
|
|
+ if (cur_altsetting->desc.bNumEndpoints == 1) {
|
|
|
+
|
|
|
+ snprintf(fw_name,
|
|
|
+ sizeof(fw_name),
|
|
|
+ "moxa/moxa-%04x.fw",
|
|
|
+ mxdev->mxd_model);
|
|
|
+
|
|
|
+ err = request_firmware(&fw_p, fw_name, &serial->interface->dev);
|
|
|
+ if (err) {
|
|
|
+ dev_err(&serial->interface->dev, "failed to request firmware: %d\n",
|
|
|
+ err);
|
|
|
+ goto err_free_mxdev;
|
|
|
+ }
|
|
|
+
|
|
|
+ err = mxu1_download_firmware(serial, fw_p);
|
|
|
+ if (err)
|
|
|
+ goto err_release_firmware;
|
|
|
+
|
|
|
+ /* device is being reset */
|
|
|
+ err = -ENODEV;
|
|
|
+ goto err_release_firmware;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+err_release_firmware:
|
|
|
+ release_firmware(fw_p);
|
|
|
+err_free_mxdev:
|
|
|
+ kfree(mxdev);
|
|
|
+
|
|
|
+ return err;
|
|
|
+}
|
|
|
+
|
|
|
+static int mxu1_write_byte(struct usb_serial_port *port, u32 addr,
|
|
|
+ u8 mask, u8 byte)
|
|
|
+{
|
|
|
+ int status;
|
|
|
+ size_t size;
|
|
|
+ struct mxu1_write_data_bytes *data;
|
|
|
+
|
|
|
+ dev_dbg(&port->dev, "%s - addr 0x%08X, mask 0x%02X, byte 0x%02X\n",
|
|
|
+ __func__, addr, mask, byte);
|
|
|
+
|
|
|
+ size = sizeof(struct mxu1_write_data_bytes) + 2;
|
|
|
+ data = kzalloc(size, GFP_KERNEL);
|
|
|
+ if (!data)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ data->bAddrType = MXU1_RW_DATA_ADDR_XDATA;
|
|
|
+ data->bDataType = MXU1_RW_DATA_BYTE;
|
|
|
+ data->bDataCounter = 1;
|
|
|
+ data->wBaseAddrHi = cpu_to_be16(addr >> 16);
|
|
|
+ data->wBaseAddrLo = cpu_to_be16(addr);
|
|
|
+ data->bData[0] = mask;
|
|
|
+ data->bData[1] = byte;
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_data_urb(port->serial, MXU1_WRITE_DATA, 0,
|
|
|
+ MXU1_RAM_PORT, data, size);
|
|
|
+ if (status < 0)
|
|
|
+ dev_err(&port->dev, "%s - failed: %d\n", __func__, status);
|
|
|
+
|
|
|
+ kfree(data);
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+static int mxu1_set_mcr(struct usb_serial_port *port, unsigned int mcr)
|
|
|
+{
|
|
|
+ int status;
|
|
|
+
|
|
|
+ status = mxu1_write_byte(port,
|
|
|
+ MXU1_UART_BASE_ADDR + MXU1_UART_OFFSET_MCR,
|
|
|
+ MXU1_MCR_RTS | MXU1_MCR_DTR | MXU1_MCR_LOOP,
|
|
|
+ mcr);
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+static void mxu1_set_termios(struct tty_struct *tty,
|
|
|
+ struct usb_serial_port *port,
|
|
|
+ struct ktermios *old_termios)
|
|
|
+{
|
|
|
+ struct mxu1_port *mxport = usb_get_serial_port_data(port);
|
|
|
+ struct mxu1_uart_config *config;
|
|
|
+ tcflag_t cflag, iflag;
|
|
|
+ speed_t baud;
|
|
|
+ int status;
|
|
|
+ unsigned int mcr;
|
|
|
+
|
|
|
+ cflag = tty->termios.c_cflag;
|
|
|
+ iflag = tty->termios.c_iflag;
|
|
|
+
|
|
|
+ if (old_termios &&
|
|
|
+ !tty_termios_hw_change(&tty->termios, old_termios) &&
|
|
|
+ tty->termios.c_iflag == old_termios->c_iflag) {
|
|
|
+ dev_dbg(&port->dev, "%s - nothing to change\n", __func__);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ dev_dbg(&port->dev,
|
|
|
+ "%s - cflag 0x%08x, iflag 0x%08x\n", __func__, cflag, iflag);
|
|
|
+
|
|
|
+ if (old_termios) {
|
|
|
+ dev_dbg(&port->dev, "%s - old cflag 0x%08x, old iflag 0x%08x\n",
|
|
|
+ __func__,
|
|
|
+ old_termios->c_cflag,
|
|
|
+ old_termios->c_iflag);
|
|
|
+ }
|
|
|
+
|
|
|
+ config = kzalloc(sizeof(*config), GFP_KERNEL);
|
|
|
+ if (!config)
|
|
|
+ return;
|
|
|
+
|
|
|
+ /* these flags must be set */
|
|
|
+ config->wFlags |= MXU1_UART_ENABLE_MS_INTS;
|
|
|
+ config->wFlags |= MXU1_UART_ENABLE_AUTO_START_DMA;
|
|
|
+ if (mxport->send_break)
|
|
|
+ config->wFlags |= MXU1_UART_SEND_BREAK_SIGNAL;
|
|
|
+ config->bUartMode = mxport->uart_mode;
|
|
|
+
|
|
|
+ switch (C_CSIZE(tty)) {
|
|
|
+ case CS5:
|
|
|
+ config->bDataBits = MXU1_UART_5_DATA_BITS;
|
|
|
+ break;
|
|
|
+ case CS6:
|
|
|
+ config->bDataBits = MXU1_UART_6_DATA_BITS;
|
|
|
+ break;
|
|
|
+ case CS7:
|
|
|
+ config->bDataBits = MXU1_UART_7_DATA_BITS;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ case CS8:
|
|
|
+ config->bDataBits = MXU1_UART_8_DATA_BITS;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (C_PARENB(tty)) {
|
|
|
+ config->wFlags |= MXU1_UART_ENABLE_PARITY_CHECKING;
|
|
|
+ if (C_CMSPAR(tty)) {
|
|
|
+ if (C_PARODD(tty))
|
|
|
+ config->bParity = MXU1_UART_MARK_PARITY;
|
|
|
+ else
|
|
|
+ config->bParity = MXU1_UART_SPACE_PARITY;
|
|
|
+ } else {
|
|
|
+ if (C_PARODD(tty))
|
|
|
+ config->bParity = MXU1_UART_ODD_PARITY;
|
|
|
+ else
|
|
|
+ config->bParity = MXU1_UART_EVEN_PARITY;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ config->bParity = MXU1_UART_NO_PARITY;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (C_CSTOPB(tty))
|
|
|
+ config->bStopBits = MXU1_UART_2_STOP_BITS;
|
|
|
+ else
|
|
|
+ config->bStopBits = MXU1_UART_1_STOP_BITS;
|
|
|
+
|
|
|
+ if (C_CRTSCTS(tty)) {
|
|
|
+ /* RTS flow control must be off to drop RTS for baud rate B0 */
|
|
|
+ if (C_BAUD(tty) != B0)
|
|
|
+ config->wFlags |= MXU1_UART_ENABLE_RTS_IN;
|
|
|
+ config->wFlags |= MXU1_UART_ENABLE_CTS_OUT;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (I_IXOFF(tty) || I_IXON(tty)) {
|
|
|
+ config->cXon = START_CHAR(tty);
|
|
|
+ config->cXoff = STOP_CHAR(tty);
|
|
|
+
|
|
|
+ if (I_IXOFF(tty))
|
|
|
+ config->wFlags |= MXU1_UART_ENABLE_X_IN;
|
|
|
+
|
|
|
+ if (I_IXON(tty))
|
|
|
+ config->wFlags |= MXU1_UART_ENABLE_X_OUT;
|
|
|
+ }
|
|
|
+
|
|
|
+ baud = tty_get_baud_rate(tty);
|
|
|
+ if (!baud)
|
|
|
+ baud = 9600;
|
|
|
+ config->wBaudRate = MXU1_BAUD_BASE / baud;
|
|
|
+
|
|
|
+ dev_dbg(&port->dev, "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
|
|
|
+ __func__, baud, config->wBaudRate, config->wFlags,
|
|
|
+ config->bDataBits, config->bParity, config->bStopBits,
|
|
|
+ config->cXon, config->cXoff, config->bUartMode);
|
|
|
+
|
|
|
+ cpu_to_be16s(&config->wBaudRate);
|
|
|
+ cpu_to_be16s(&config->wFlags);
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_data_urb(port->serial, MXU1_SET_CONFIG, 0,
|
|
|
+ MXU1_UART1_PORT, config,
|
|
|
+ sizeof(*config));
|
|
|
+ if (status)
|
|
|
+ dev_err(&port->dev, "cannot set config: %d\n", status);
|
|
|
+
|
|
|
+ mutex_lock(&mxport->mutex);
|
|
|
+ mcr = mxport->mcr;
|
|
|
+
|
|
|
+ if (C_BAUD(tty) == B0)
|
|
|
+ mcr &= ~(MXU1_MCR_DTR | MXU1_MCR_RTS);
|
|
|
+ else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
|
|
|
+ mcr |= MXU1_MCR_DTR | MXU1_MCR_RTS;
|
|
|
+
|
|
|
+ status = mxu1_set_mcr(port, mcr);
|
|
|
+ if (status)
|
|
|
+ dev_err(&port->dev, "cannot set modem control: %d\n", status);
|
|
|
+ else
|
|
|
+ mxport->mcr = mcr;
|
|
|
+
|
|
|
+ mutex_unlock(&mxport->mutex);
|
|
|
+
|
|
|
+ kfree(config);
|
|
|
+}
|
|
|
+
|
|
|
+static int mxu1_get_serial_info(struct usb_serial_port *port,
|
|
|
+ struct serial_struct __user *ret_arg)
|
|
|
+{
|
|
|
+ struct serial_struct ret_serial;
|
|
|
+ unsigned cwait;
|
|
|
+
|
|
|
+ if (!ret_arg)
|
|
|
+ return -EFAULT;
|
|
|
+
|
|
|
+ cwait = port->port.closing_wait;
|
|
|
+ if (cwait != ASYNC_CLOSING_WAIT_NONE)
|
|
|
+ cwait = jiffies_to_msecs(cwait) / 10;
|
|
|
+
|
|
|
+ memset(&ret_serial, 0, sizeof(ret_serial));
|
|
|
+
|
|
|
+ ret_serial.type = PORT_16550A;
|
|
|
+ ret_serial.line = port->minor;
|
|
|
+ ret_serial.port = 0;
|
|
|
+ ret_serial.xmit_fifo_size = port->bulk_out_size;
|
|
|
+ ret_serial.baud_base = MXU1_BAUD_BASE;
|
|
|
+ ret_serial.close_delay = 5*HZ;
|
|
|
+ ret_serial.closing_wait = cwait;
|
|
|
+
|
|
|
+ if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
|
|
|
+ return -EFAULT;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static int mxu1_set_serial_info(struct usb_serial_port *port,
|
|
|
+ struct serial_struct __user *new_arg)
|
|
|
+{
|
|
|
+ struct serial_struct new_serial;
|
|
|
+ unsigned cwait;
|
|
|
+
|
|
|
+ if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
|
|
|
+ return -EFAULT;
|
|
|
+
|
|
|
+ cwait = new_serial.closing_wait;
|
|
|
+ if (cwait != ASYNC_CLOSING_WAIT_NONE)
|
|
|
+ cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
|
|
|
+
|
|
|
+ port->port.closing_wait = cwait;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int mxu1_ioctl(struct tty_struct *tty,
|
|
|
+ unsigned int cmd, unsigned long arg)
|
|
|
+{
|
|
|
+ struct usb_serial_port *port = tty->driver_data;
|
|
|
+
|
|
|
+ switch (cmd) {
|
|
|
+ case TIOCGSERIAL:
|
|
|
+ return mxu1_get_serial_info(port,
|
|
|
+ (struct serial_struct __user *)arg);
|
|
|
+ case TIOCSSERIAL:
|
|
|
+ return mxu1_set_serial_info(port,
|
|
|
+ (struct serial_struct __user *)arg);
|
|
|
+ }
|
|
|
+
|
|
|
+ return -ENOIOCTLCMD;
|
|
|
+}
|
|
|
+
|
|
|
+static int mxu1_tiocmget(struct tty_struct *tty)
|
|
|
+{
|
|
|
+ struct usb_serial_port *port = tty->driver_data;
|
|
|
+ struct mxu1_port *mxport = usb_get_serial_port_data(port);
|
|
|
+ unsigned int result;
|
|
|
+ unsigned int msr;
|
|
|
+ unsigned int mcr;
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ mutex_lock(&mxport->mutex);
|
|
|
+ spin_lock_irqsave(&mxport->spinlock, flags);
|
|
|
+
|
|
|
+ msr = mxport->msr;
|
|
|
+ mcr = mxport->mcr;
|
|
|
+
|
|
|
+ spin_unlock_irqrestore(&mxport->spinlock, flags);
|
|
|
+ mutex_unlock(&mxport->mutex);
|
|
|
+
|
|
|
+ result = ((mcr & MXU1_MCR_DTR) ? TIOCM_DTR : 0) |
|
|
|
+ ((mcr & MXU1_MCR_RTS) ? TIOCM_RTS : 0) |
|
|
|
+ ((mcr & MXU1_MCR_LOOP) ? TIOCM_LOOP : 0) |
|
|
|
+ ((msr & MXU1_MSR_CTS) ? TIOCM_CTS : 0) |
|
|
|
+ ((msr & MXU1_MSR_CD) ? TIOCM_CAR : 0) |
|
|
|
+ ((msr & MXU1_MSR_RI) ? TIOCM_RI : 0) |
|
|
|
+ ((msr & MXU1_MSR_DSR) ? TIOCM_DSR : 0);
|
|
|
+
|
|
|
+ dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
|
|
|
+
|
|
|
+ return result;
|
|
|
+}
|
|
|
+
|
|
|
+static int mxu1_tiocmset(struct tty_struct *tty,
|
|
|
+ unsigned int set, unsigned int clear)
|
|
|
+{
|
|
|
+ struct usb_serial_port *port = tty->driver_data;
|
|
|
+ struct mxu1_port *mxport = usb_get_serial_port_data(port);
|
|
|
+ int err;
|
|
|
+ unsigned int mcr;
|
|
|
+
|
|
|
+ mutex_lock(&mxport->mutex);
|
|
|
+ mcr = mxport->mcr;
|
|
|
+
|
|
|
+ if (set & TIOCM_RTS)
|
|
|
+ mcr |= MXU1_MCR_RTS;
|
|
|
+ if (set & TIOCM_DTR)
|
|
|
+ mcr |= MXU1_MCR_DTR;
|
|
|
+ if (set & TIOCM_LOOP)
|
|
|
+ mcr |= MXU1_MCR_LOOP;
|
|
|
+
|
|
|
+ if (clear & TIOCM_RTS)
|
|
|
+ mcr &= ~MXU1_MCR_RTS;
|
|
|
+ if (clear & TIOCM_DTR)
|
|
|
+ mcr &= ~MXU1_MCR_DTR;
|
|
|
+ if (clear & TIOCM_LOOP)
|
|
|
+ mcr &= ~MXU1_MCR_LOOP;
|
|
|
+
|
|
|
+ err = mxu1_set_mcr(port, mcr);
|
|
|
+ if (!err)
|
|
|
+ mxport->mcr = mcr;
|
|
|
+
|
|
|
+ mutex_unlock(&mxport->mutex);
|
|
|
+
|
|
|
+ return err;
|
|
|
+}
|
|
|
+
|
|
|
+static void mxu1_break(struct tty_struct *tty, int break_state)
|
|
|
+{
|
|
|
+ struct usb_serial_port *port = tty->driver_data;
|
|
|
+ struct mxu1_port *mxport = usb_get_serial_port_data(port);
|
|
|
+
|
|
|
+ if (break_state == -1)
|
|
|
+ mxport->send_break = true;
|
|
|
+ else
|
|
|
+ mxport->send_break = false;
|
|
|
+
|
|
|
+ mxu1_set_termios(tty, port, NULL);
|
|
|
+}
|
|
|
+
|
|
|
+static int mxu1_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|
|
+{
|
|
|
+ struct mxu1_port *mxport = usb_get_serial_port_data(port);
|
|
|
+ struct usb_serial *serial = port->serial;
|
|
|
+ int status;
|
|
|
+ u16 open_settings;
|
|
|
+
|
|
|
+ open_settings = (MXU1_PIPE_MODE_CONTINUOUS |
|
|
|
+ MXU1_PIPE_TIMEOUT_ENABLE |
|
|
|
+ (MXU1_TRANSFER_TIMEOUT << 2));
|
|
|
+
|
|
|
+ mxport->msr = 0;
|
|
|
+
|
|
|
+ status = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "failed to submit interrupt urb: %d\n",
|
|
|
+ status);
|
|
|
+ return status;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (tty)
|
|
|
+ mxu1_set_termios(tty, port, NULL);
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_urb(serial, MXU1_OPEN_PORT,
|
|
|
+ open_settings, MXU1_UART1_PORT);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "cannot send open command: %d\n", status);
|
|
|
+ goto unlink_int_urb;
|
|
|
+ }
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_urb(serial, MXU1_START_PORT,
|
|
|
+ 0, MXU1_UART1_PORT);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "cannot send start command: %d\n", status);
|
|
|
+ goto unlink_int_urb;
|
|
|
+ }
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_urb(serial, MXU1_PURGE_PORT,
|
|
|
+ MXU1_PURGE_INPUT, MXU1_UART1_PORT);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "cannot clear input buffers: %d\n",
|
|
|
+ status);
|
|
|
+
|
|
|
+ goto unlink_int_urb;
|
|
|
+ }
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_urb(serial, MXU1_PURGE_PORT,
|
|
|
+ MXU1_PURGE_OUTPUT, MXU1_UART1_PORT);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "cannot clear output buffers: %d\n",
|
|
|
+ status);
|
|
|
+
|
|
|
+ goto unlink_int_urb;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * reset the data toggle on the bulk endpoints to work around bug in
|
|
|
+ * host controllers where things get out of sync some times
|
|
|
+ */
|
|
|
+ usb_clear_halt(serial->dev, port->write_urb->pipe);
|
|
|
+ usb_clear_halt(serial->dev, port->read_urb->pipe);
|
|
|
+
|
|
|
+ if (tty)
|
|
|
+ mxu1_set_termios(tty, port, NULL);
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_urb(serial, MXU1_OPEN_PORT,
|
|
|
+ open_settings, MXU1_UART1_PORT);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "cannot send open command: %d\n", status);
|
|
|
+ goto unlink_int_urb;
|
|
|
+ }
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_urb(serial, MXU1_START_PORT,
|
|
|
+ 0, MXU1_UART1_PORT);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "cannot send start command: %d\n", status);
|
|
|
+ goto unlink_int_urb;
|
|
|
+ }
|
|
|
+
|
|
|
+ status = usb_serial_generic_open(tty, port);
|
|
|
+ if (status)
|
|
|
+ goto unlink_int_urb;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+unlink_int_urb:
|
|
|
+ usb_kill_urb(port->interrupt_in_urb);
|
|
|
+
|
|
|
+ return status;
|
|
|
+}
|
|
|
+
|
|
|
+static void mxu1_close(struct usb_serial_port *port)
|
|
|
+{
|
|
|
+ int status;
|
|
|
+
|
|
|
+ usb_serial_generic_close(port);
|
|
|
+ usb_kill_urb(port->interrupt_in_urb);
|
|
|
+
|
|
|
+ status = mxu1_send_ctrl_urb(port->serial, MXU1_CLOSE_PORT,
|
|
|
+ 0, MXU1_UART1_PORT);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "failed to send close port command: %d\n",
|
|
|
+ status);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static void mxu1_handle_new_msr(struct usb_serial_port *port, u8 msr)
|
|
|
+{
|
|
|
+ struct mxu1_port *mxport = usb_get_serial_port_data(port);
|
|
|
+ struct async_icount *icount;
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ dev_dbg(&port->dev, "%s - msr 0x%02X\n", __func__, msr);
|
|
|
+
|
|
|
+ spin_lock_irqsave(&mxport->spinlock, flags);
|
|
|
+ mxport->msr = msr & MXU1_MSR_MASK;
|
|
|
+ spin_unlock_irqrestore(&mxport->spinlock, flags);
|
|
|
+
|
|
|
+ if (msr & MXU1_MSR_DELTA_MASK) {
|
|
|
+ icount = &port->icount;
|
|
|
+ if (msr & MXU1_MSR_DELTA_CTS)
|
|
|
+ icount->cts++;
|
|
|
+ if (msr & MXU1_MSR_DELTA_DSR)
|
|
|
+ icount->dsr++;
|
|
|
+ if (msr & MXU1_MSR_DELTA_CD)
|
|
|
+ icount->dcd++;
|
|
|
+ if (msr & MXU1_MSR_DELTA_RI)
|
|
|
+ icount->rng++;
|
|
|
+
|
|
|
+ wake_up_interruptible(&port->port.delta_msr_wait);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static void mxu1_interrupt_callback(struct urb *urb)
|
|
|
+{
|
|
|
+ struct usb_serial_port *port = urb->context;
|
|
|
+ unsigned char *data = urb->transfer_buffer;
|
|
|
+ int length = urb->actual_length;
|
|
|
+ int function;
|
|
|
+ int status;
|
|
|
+ u8 msr;
|
|
|
+
|
|
|
+ switch (urb->status) {
|
|
|
+ case 0:
|
|
|
+ break;
|
|
|
+ case -ECONNRESET:
|
|
|
+ case -ENOENT:
|
|
|
+ case -ESHUTDOWN:
|
|
|
+ dev_dbg(&port->dev, "%s - urb shutting down: %d\n",
|
|
|
+ __func__, urb->status);
|
|
|
+ return;
|
|
|
+ default:
|
|
|
+ dev_dbg(&port->dev, "%s - nonzero urb status: %d\n",
|
|
|
+ __func__, urb->status);
|
|
|
+ goto exit;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (length != 2) {
|
|
|
+ dev_dbg(&port->dev, "%s - bad packet size: %d\n",
|
|
|
+ __func__, length);
|
|
|
+ goto exit;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (data[0] == MXU1_CODE_HARDWARE_ERROR) {
|
|
|
+ dev_err(&port->dev, "hardware error: %d\n", data[1]);
|
|
|
+ goto exit;
|
|
|
+ }
|
|
|
+
|
|
|
+ function = mxu1_get_func_from_code(data[0]);
|
|
|
+
|
|
|
+ dev_dbg(&port->dev, "%s - function %d, data 0x%02X\n",
|
|
|
+ __func__, function, data[1]);
|
|
|
+
|
|
|
+ switch (function) {
|
|
|
+ case MXU1_CODE_DATA_ERROR:
|
|
|
+ dev_dbg(&port->dev, "%s - DATA ERROR, data 0x%02X\n",
|
|
|
+ __func__, data[1]);
|
|
|
+ break;
|
|
|
+
|
|
|
+ case MXU1_CODE_MODEM_STATUS:
|
|
|
+ msr = data[1];
|
|
|
+ mxu1_handle_new_msr(port, msr);
|
|
|
+ break;
|
|
|
+
|
|
|
+ default:
|
|
|
+ dev_err(&port->dev, "unknown interrupt code: 0x%02X\n",
|
|
|
+ data[1]);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+exit:
|
|
|
+ status = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
+ if (status) {
|
|
|
+ dev_err(&port->dev, "resubmit interrupt urb failed: %d\n",
|
|
|
+ status);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static struct usb_serial_driver mxu11x0_device = {
|
|
|
+ .driver = {
|
|
|
+ .owner = THIS_MODULE,
|
|
|
+ .name = "mxu11x0",
|
|
|
+ },
|
|
|
+ .description = "MOXA UPort 11x0",
|
|
|
+ .id_table = mxu1_idtable,
|
|
|
+ .num_ports = 1,
|
|
|
+ .port_probe = mxu1_port_probe,
|
|
|
+ .attach = mxu1_startup,
|
|
|
+ .open = mxu1_open,
|
|
|
+ .close = mxu1_close,
|
|
|
+ .ioctl = mxu1_ioctl,
|
|
|
+ .set_termios = mxu1_set_termios,
|
|
|
+ .tiocmget = mxu1_tiocmget,
|
|
|
+ .tiocmset = mxu1_tiocmset,
|
|
|
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
|
|
|
+ .get_icount = usb_serial_generic_get_icount,
|
|
|
+ .break_ctl = mxu1_break,
|
|
|
+ .read_int_callback = mxu1_interrupt_callback,
|
|
|
+};
|
|
|
+
|
|
|
+static struct usb_serial_driver *const serial_drivers[] = {
|
|
|
+ &mxu11x0_device, NULL
|
|
|
+};
|
|
|
+
|
|
|
+module_usb_serial_driver(serial_drivers, mxu1_idtable);
|
|
|
+
|
|
|
+MODULE_AUTHOR("Mathieu Othacehe <m.othacehe@gmail.com>");
|
|
|
+MODULE_DESCRIPTION("MOXA UPort 11x0 USB to Serial Hub Driver");
|
|
|
+MODULE_LICENSE("GPL");
|
|
|
+MODULE_FIRMWARE("moxa/moxa-1110.fw");
|
|
|
+MODULE_FIRMWARE("moxa/moxa-1130.fw");
|
|
|
+MODULE_FIRMWARE("moxa/moxa-1131.fw");
|
|
|
+MODULE_FIRMWARE("moxa/moxa-1150.fw");
|
|
|
+MODULE_FIRMWARE("moxa/moxa-1151.fw");
|
Greg Kroah-Hartman