10c9bd600SJi-Ze Hong (Peter Hong) /* 20c9bd600SJi-Ze Hong (Peter Hong) * F81532/F81534 USB to Serial Ports Bridge 30c9bd600SJi-Ze Hong (Peter Hong) * 40c9bd600SJi-Ze Hong (Peter Hong) * F81532 => 2 Serial Ports 50c9bd600SJi-Ze Hong (Peter Hong) * F81534 => 4 Serial Ports 60c9bd600SJi-Ze Hong (Peter Hong) * 70c9bd600SJi-Ze Hong (Peter Hong) * This program is free software; you can redistribute it and/or modify 80c9bd600SJi-Ze Hong (Peter Hong) * it under the terms of the GNU General Public License as published by 90c9bd600SJi-Ze Hong (Peter Hong) * the Free Software Foundation; either version 2 of the License, or 100c9bd600SJi-Ze Hong (Peter Hong) * (at your option) any later version. 110c9bd600SJi-Ze Hong (Peter Hong) * 120c9bd600SJi-Ze Hong (Peter Hong) * Copyright (C) 2016 Feature Integration Technology Inc., (Fintek) 130c9bd600SJi-Ze Hong (Peter Hong) * Copyright (C) 2016 Tom Tsai (Tom_Tsai@fintek.com.tw) 140c9bd600SJi-Ze Hong (Peter Hong) * Copyright (C) 2016 Peter Hong (Peter_Hong@fintek.com.tw) 150c9bd600SJi-Ze Hong (Peter Hong) * 160c9bd600SJi-Ze Hong (Peter Hong) * The F81532/F81534 had 1 control endpoint for setting, 1 endpoint bulk-out 170c9bd600SJi-Ze Hong (Peter Hong) * for all serial port TX and 1 endpoint bulk-in for all serial port read in 180c9bd600SJi-Ze Hong (Peter Hong) * (Read Data/MSR/LSR). 190c9bd600SJi-Ze Hong (Peter Hong) * 200c9bd600SJi-Ze Hong (Peter Hong) * Write URB is fixed with 512bytes, per serial port used 128Bytes. 210c9bd600SJi-Ze Hong (Peter Hong) * It can be described by f81534_prepare_write_buffer() 220c9bd600SJi-Ze Hong (Peter Hong) * 230c9bd600SJi-Ze Hong (Peter Hong) * Read URB is 512Bytes max, per serial port used 128Bytes. 240c9bd600SJi-Ze Hong (Peter Hong) * It can be described by f81534_process_read_urb() and maybe received with 250c9bd600SJi-Ze Hong (Peter Hong) * 128x1,2,3,4 bytes. 260c9bd600SJi-Ze Hong (Peter Hong) * 270c9bd600SJi-Ze Hong (Peter Hong) */ 280c9bd600SJi-Ze Hong (Peter Hong) #include <linux/slab.h> 290c9bd600SJi-Ze Hong (Peter Hong) #include <linux/tty.h> 300c9bd600SJi-Ze Hong (Peter Hong) #include <linux/tty_flip.h> 310c9bd600SJi-Ze Hong (Peter Hong) #include <linux/usb.h> 320c9bd600SJi-Ze Hong (Peter Hong) #include <linux/usb/serial.h> 330c9bd600SJi-Ze Hong (Peter Hong) #include <linux/serial_reg.h> 340c9bd600SJi-Ze Hong (Peter Hong) #include <linux/module.h> 350c9bd600SJi-Ze Hong (Peter Hong) #include <linux/uaccess.h> 360c9bd600SJi-Ze Hong (Peter Hong) 370c9bd600SJi-Ze Hong (Peter Hong) /* Serial Port register Address */ 380c9bd600SJi-Ze Hong (Peter Hong) #define F81534_UART_BASE_ADDRESS 0x1200 390c9bd600SJi-Ze Hong (Peter Hong) #define F81534_UART_OFFSET 0x10 400c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DIVISOR_LSB_REG (0x00 + F81534_UART_BASE_ADDRESS) 410c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DIVISOR_MSB_REG (0x01 + F81534_UART_BASE_ADDRESS) 420c9bd600SJi-Ze Hong (Peter Hong) #define F81534_FIFO_CONTROL_REG (0x02 + F81534_UART_BASE_ADDRESS) 430c9bd600SJi-Ze Hong (Peter Hong) #define F81534_LINE_CONTROL_REG (0x03 + F81534_UART_BASE_ADDRESS) 440c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MODEM_CONTROL_REG (0x04 + F81534_UART_BASE_ADDRESS) 450c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MODEM_STATUS_REG (0x06 + F81534_UART_BASE_ADDRESS) 460c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CONFIG1_REG (0x09 + F81534_UART_BASE_ADDRESS) 470c9bd600SJi-Ze Hong (Peter Hong) 480c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DEF_CONF_ADDRESS_START 0x3000 490c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DEF_CONF_SIZE 8 500c9bd600SJi-Ze Hong (Peter Hong) 510c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_ADDRESS_START 0x2f00 520c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_DATA_SIZE 0x10 530c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_NO_CUSTOM_DATA 0xff 540c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_VALID_TOKEN 0xf0 550c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CONF_OFFSET 1 560c9bd600SJi-Ze Hong (Peter Hong) 570c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_DATA_BLOCK 64 580c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_BUS_RETRY 20 590c9bd600SJi-Ze Hong (Peter Hong) 600c9bd600SJi-Ze Hong (Peter Hong) /* Default URB timeout for USB operations */ 610c9bd600SJi-Ze Hong (Peter Hong) #define F81534_USB_MAX_RETRY 10 620c9bd600SJi-Ze Hong (Peter Hong) #define F81534_USB_TIMEOUT 1000 630c9bd600SJi-Ze Hong (Peter Hong) #define F81534_SET_GET_REGISTER 0xA0 640c9bd600SJi-Ze Hong (Peter Hong) 650c9bd600SJi-Ze Hong (Peter Hong) #define F81534_NUM_PORT 4 660c9bd600SJi-Ze Hong (Peter Hong) #define F81534_UNUSED_PORT 0xff 670c9bd600SJi-Ze Hong (Peter Hong) #define F81534_WRITE_BUFFER_SIZE 512 680c9bd600SJi-Ze Hong (Peter Hong) 690c9bd600SJi-Ze Hong (Peter Hong) #define DRIVER_DESC "Fintek F81532/F81534" 700c9bd600SJi-Ze Hong (Peter Hong) #define FINTEK_VENDOR_ID_1 0x1934 710c9bd600SJi-Ze Hong (Peter Hong) #define FINTEK_VENDOR_ID_2 0x2C42 720c9bd600SJi-Ze Hong (Peter Hong) #define FINTEK_DEVICE_ID 0x1202 730c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_TX_SIZE 124 740c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_RX_SIZE 124 750c9bd600SJi-Ze Hong (Peter Hong) #define F81534_RECEIVE_BLOCK_SIZE 128 760c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_RECEIVE_BLOCK_SIZE 512 770c9bd600SJi-Ze Hong (Peter Hong) 780c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_RECEIVE 0x01 790c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_WRITE 0x02 800c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_TX_EMPTY 0x03 810c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_MSR_CHANGE 0x04 820c9bd600SJi-Ze Hong (Peter Hong) 830c9bd600SJi-Ze Hong (Peter Hong) /* 840c9bd600SJi-Ze Hong (Peter Hong) * We used interal SPI bus to access FLASH section. We must wait the SPI bus to 850c9bd600SJi-Ze Hong (Peter Hong) * idle if we performed any command. 860c9bd600SJi-Ze Hong (Peter Hong) * 870c9bd600SJi-Ze Hong (Peter Hong) * SPI Bus status register: F81534_BUS_REG_STATUS 880c9bd600SJi-Ze Hong (Peter Hong) * Bit 0/1 : BUSY 890c9bd600SJi-Ze Hong (Peter Hong) * Bit 2 : IDLE 900c9bd600SJi-Ze Hong (Peter Hong) */ 910c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_BUSY (BIT(0) | BIT(1)) 920c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_IDLE BIT(2) 930c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_READ_DATA 0x1004 940c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_REG_STATUS 0x1003 950c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_REG_START 0x1002 960c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_REG_END 0x1001 970c9bd600SJi-Ze Hong (Peter Hong) 980c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CMD_READ 0x03 990c9bd600SJi-Ze Hong (Peter Hong) 1000c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DEFAULT_BAUD_RATE 9600 1010c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_BAUDRATE 115200 1020c9bd600SJi-Ze Hong (Peter Hong) 1030c9bd600SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_DISABLE_PORT BIT(3) 1040c9bd600SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_NOT_EXIST_PORT BIT(7) 1050c9bd600SJi-Ze Hong (Peter Hong) #define F81534_PORT_UNAVAILABLE \ 1060c9bd600SJi-Ze Hong (Peter Hong) (F81534_PORT_CONF_DISABLE_PORT | F81534_PORT_CONF_NOT_EXIST_PORT) 1070c9bd600SJi-Ze Hong (Peter Hong) 1080c9bd600SJi-Ze Hong (Peter Hong) #define F81534_1X_RXTRIGGER 0xc3 1090c9bd600SJi-Ze Hong (Peter Hong) #define F81534_8X_RXTRIGGER 0xcf 1100c9bd600SJi-Ze Hong (Peter Hong) 1110c9bd600SJi-Ze Hong (Peter Hong) static const struct usb_device_id f81534_id_table[] = { 1120c9bd600SJi-Ze Hong (Peter Hong) { USB_DEVICE(FINTEK_VENDOR_ID_1, FINTEK_DEVICE_ID) }, 1130c9bd600SJi-Ze Hong (Peter Hong) { USB_DEVICE(FINTEK_VENDOR_ID_2, FINTEK_DEVICE_ID) }, 1140c9bd600SJi-Ze Hong (Peter Hong) {} /* Terminating entry */ 1150c9bd600SJi-Ze Hong (Peter Hong) }; 1160c9bd600SJi-Ze Hong (Peter Hong) 1170c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TX_EMPTY_BIT 0 1180c9bd600SJi-Ze Hong (Peter Hong) 1190c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private { 1200c9bd600SJi-Ze Hong (Peter Hong) u8 conf_data[F81534_DEF_CONF_SIZE]; 1210c9bd600SJi-Ze Hong (Peter Hong) int tty_idx[F81534_NUM_PORT]; 1220c9bd600SJi-Ze Hong (Peter Hong) u8 setting_idx; 1230c9bd600SJi-Ze Hong (Peter Hong) int opened_port; 1240c9bd600SJi-Ze Hong (Peter Hong) struct mutex urb_mutex; 1250c9bd600SJi-Ze Hong (Peter Hong) }; 1260c9bd600SJi-Ze Hong (Peter Hong) 1270c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private { 1280c9bd600SJi-Ze Hong (Peter Hong) struct mutex mcr_mutex; 1290c9bd600SJi-Ze Hong (Peter Hong) unsigned long tx_empty; 1300c9bd600SJi-Ze Hong (Peter Hong) spinlock_t msr_lock; 1310c9bd600SJi-Ze Hong (Peter Hong) u8 shadow_mcr; 1320c9bd600SJi-Ze Hong (Peter Hong) u8 shadow_msr; 1330c9bd600SJi-Ze Hong (Peter Hong) u8 phy_num; 1340c9bd600SJi-Ze Hong (Peter Hong) }; 1350c9bd600SJi-Ze Hong (Peter Hong) 1360c9bd600SJi-Ze Hong (Peter Hong) static int f81534_logic_to_phy_port(struct usb_serial *serial, 1370c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port) 1380c9bd600SJi-Ze Hong (Peter Hong) { 1390c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 1400c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(port->serial); 1410c9bd600SJi-Ze Hong (Peter Hong) int count = 0; 1420c9bd600SJi-Ze Hong (Peter Hong) int i; 1430c9bd600SJi-Ze Hong (Peter Hong) 1440c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 1450c9bd600SJi-Ze Hong (Peter Hong) if (serial_priv->conf_data[i] & F81534_PORT_UNAVAILABLE) 1460c9bd600SJi-Ze Hong (Peter Hong) continue; 1470c9bd600SJi-Ze Hong (Peter Hong) 1480c9bd600SJi-Ze Hong (Peter Hong) if (port->port_number == count) 1490c9bd600SJi-Ze Hong (Peter Hong) return i; 1500c9bd600SJi-Ze Hong (Peter Hong) 1510c9bd600SJi-Ze Hong (Peter Hong) ++count; 1520c9bd600SJi-Ze Hong (Peter Hong) } 1530c9bd600SJi-Ze Hong (Peter Hong) 1540c9bd600SJi-Ze Hong (Peter Hong) return -ENODEV; 1550c9bd600SJi-Ze Hong (Peter Hong) } 1560c9bd600SJi-Ze Hong (Peter Hong) 1570c9bd600SJi-Ze Hong (Peter Hong) static int f81534_set_register(struct usb_serial *serial, u16 reg, u8 data) 1580c9bd600SJi-Ze Hong (Peter Hong) { 1590c9bd600SJi-Ze Hong (Peter Hong) struct usb_interface *interface = serial->interface; 1600c9bd600SJi-Ze Hong (Peter Hong) struct usb_device *dev = serial->dev; 1610c9bd600SJi-Ze Hong (Peter Hong) size_t count = F81534_USB_MAX_RETRY; 1620c9bd600SJi-Ze Hong (Peter Hong) int status; 1630c9bd600SJi-Ze Hong (Peter Hong) u8 *tmp; 1640c9bd600SJi-Ze Hong (Peter Hong) 1650c9bd600SJi-Ze Hong (Peter Hong) tmp = kmalloc(sizeof(u8), GFP_KERNEL); 1660c9bd600SJi-Ze Hong (Peter Hong) if (!tmp) 1670c9bd600SJi-Ze Hong (Peter Hong) return -ENOMEM; 1680c9bd600SJi-Ze Hong (Peter Hong) 1690c9bd600SJi-Ze Hong (Peter Hong) *tmp = data; 1700c9bd600SJi-Ze Hong (Peter Hong) 1710c9bd600SJi-Ze Hong (Peter Hong) /* 1720c9bd600SJi-Ze Hong (Peter Hong) * Our device maybe not reply when heavily loading, We'll retry for 1730c9bd600SJi-Ze Hong (Peter Hong) * F81534_USB_MAX_RETRY times. 1740c9bd600SJi-Ze Hong (Peter Hong) */ 1750c9bd600SJi-Ze Hong (Peter Hong) while (count--) { 1760c9bd600SJi-Ze Hong (Peter Hong) status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 1770c9bd600SJi-Ze Hong (Peter Hong) F81534_SET_GET_REGISTER, 1780c9bd600SJi-Ze Hong (Peter Hong) USB_TYPE_VENDOR | USB_DIR_OUT, 1790c9bd600SJi-Ze Hong (Peter Hong) reg, 0, tmp, sizeof(u8), 1800c9bd600SJi-Ze Hong (Peter Hong) F81534_USB_TIMEOUT); 1810c9bd600SJi-Ze Hong (Peter Hong) if (status > 0) { 1820c9bd600SJi-Ze Hong (Peter Hong) status = 0; 1830c9bd600SJi-Ze Hong (Peter Hong) break; 1840c9bd600SJi-Ze Hong (Peter Hong) } else if (status == 0) { 1850c9bd600SJi-Ze Hong (Peter Hong) status = -EIO; 1860c9bd600SJi-Ze Hong (Peter Hong) } 1870c9bd600SJi-Ze Hong (Peter Hong) } 1880c9bd600SJi-Ze Hong (Peter Hong) 1890c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 1900c9bd600SJi-Ze Hong (Peter Hong) dev_err(&interface->dev, "%s: reg: %x data: %x failed: %d\n", 1910c9bd600SJi-Ze Hong (Peter Hong) __func__, reg, data, status); 1920c9bd600SJi-Ze Hong (Peter Hong) } 1930c9bd600SJi-Ze Hong (Peter Hong) 1940c9bd600SJi-Ze Hong (Peter Hong) kfree(tmp); 1950c9bd600SJi-Ze Hong (Peter Hong) return status; 1960c9bd600SJi-Ze Hong (Peter Hong) } 1970c9bd600SJi-Ze Hong (Peter Hong) 1980c9bd600SJi-Ze Hong (Peter Hong) static int f81534_get_register(struct usb_serial *serial, u16 reg, u8 *data) 1990c9bd600SJi-Ze Hong (Peter Hong) { 2000c9bd600SJi-Ze Hong (Peter Hong) struct usb_interface *interface = serial->interface; 2010c9bd600SJi-Ze Hong (Peter Hong) struct usb_device *dev = serial->dev; 2020c9bd600SJi-Ze Hong (Peter Hong) size_t count = F81534_USB_MAX_RETRY; 2030c9bd600SJi-Ze Hong (Peter Hong) int status; 2040c9bd600SJi-Ze Hong (Peter Hong) u8 *tmp; 2050c9bd600SJi-Ze Hong (Peter Hong) 2060c9bd600SJi-Ze Hong (Peter Hong) tmp = kmalloc(sizeof(u8), GFP_KERNEL); 2070c9bd600SJi-Ze Hong (Peter Hong) if (!tmp) 2080c9bd600SJi-Ze Hong (Peter Hong) return -ENOMEM; 2090c9bd600SJi-Ze Hong (Peter Hong) 2100c9bd600SJi-Ze Hong (Peter Hong) /* 2110c9bd600SJi-Ze Hong (Peter Hong) * Our device maybe not reply when heavily loading, We'll retry for 2120c9bd600SJi-Ze Hong (Peter Hong) * F81534_USB_MAX_RETRY times. 2130c9bd600SJi-Ze Hong (Peter Hong) */ 2140c9bd600SJi-Ze Hong (Peter Hong) while (count--) { 2150c9bd600SJi-Ze Hong (Peter Hong) status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 2160c9bd600SJi-Ze Hong (Peter Hong) F81534_SET_GET_REGISTER, 2170c9bd600SJi-Ze Hong (Peter Hong) USB_TYPE_VENDOR | USB_DIR_IN, 2180c9bd600SJi-Ze Hong (Peter Hong) reg, 0, tmp, sizeof(u8), 2190c9bd600SJi-Ze Hong (Peter Hong) F81534_USB_TIMEOUT); 2200c9bd600SJi-Ze Hong (Peter Hong) if (status > 0) { 2210c9bd600SJi-Ze Hong (Peter Hong) status = 0; 2220c9bd600SJi-Ze Hong (Peter Hong) break; 2230c9bd600SJi-Ze Hong (Peter Hong) } else if (status == 0) { 2240c9bd600SJi-Ze Hong (Peter Hong) status = -EIO; 2250c9bd600SJi-Ze Hong (Peter Hong) } 2260c9bd600SJi-Ze Hong (Peter Hong) } 2270c9bd600SJi-Ze Hong (Peter Hong) 2280c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 2290c9bd600SJi-Ze Hong (Peter Hong) dev_err(&interface->dev, "%s: reg: %x failed: %d\n", __func__, 2300c9bd600SJi-Ze Hong (Peter Hong) reg, status); 2310c9bd600SJi-Ze Hong (Peter Hong) goto end; 2320c9bd600SJi-Ze Hong (Peter Hong) } 2330c9bd600SJi-Ze Hong (Peter Hong) 2340c9bd600SJi-Ze Hong (Peter Hong) *data = *tmp; 2350c9bd600SJi-Ze Hong (Peter Hong) 2360c9bd600SJi-Ze Hong (Peter Hong) end: 2370c9bd600SJi-Ze Hong (Peter Hong) kfree(tmp); 2380c9bd600SJi-Ze Hong (Peter Hong) return status; 2390c9bd600SJi-Ze Hong (Peter Hong) } 2400c9bd600SJi-Ze Hong (Peter Hong) 2410c9bd600SJi-Ze Hong (Peter Hong) static int f81534_set_port_register(struct usb_serial_port *port, u16 reg, 2420c9bd600SJi-Ze Hong (Peter Hong) u8 data) 2430c9bd600SJi-Ze Hong (Peter Hong) { 2440c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 2450c9bd600SJi-Ze Hong (Peter Hong) 2460c9bd600SJi-Ze Hong (Peter Hong) return f81534_set_register(port->serial, 2470c9bd600SJi-Ze Hong (Peter Hong) reg + port_priv->phy_num * F81534_UART_OFFSET, data); 2480c9bd600SJi-Ze Hong (Peter Hong) } 2490c9bd600SJi-Ze Hong (Peter Hong) 2500c9bd600SJi-Ze Hong (Peter Hong) static int f81534_get_port_register(struct usb_serial_port *port, u16 reg, 2510c9bd600SJi-Ze Hong (Peter Hong) u8 *data) 2520c9bd600SJi-Ze Hong (Peter Hong) { 2530c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 2540c9bd600SJi-Ze Hong (Peter Hong) 2550c9bd600SJi-Ze Hong (Peter Hong) return f81534_get_register(port->serial, 2560c9bd600SJi-Ze Hong (Peter Hong) reg + port_priv->phy_num * F81534_UART_OFFSET, data); 2570c9bd600SJi-Ze Hong (Peter Hong) } 2580c9bd600SJi-Ze Hong (Peter Hong) 2590c9bd600SJi-Ze Hong (Peter Hong) /* 2600c9bd600SJi-Ze Hong (Peter Hong) * If we try to access the internal flash via SPI bus, we should check the bus 2610c9bd600SJi-Ze Hong (Peter Hong) * status for every command. e.g., F81534_BUS_REG_START/F81534_BUS_REG_END 2620c9bd600SJi-Ze Hong (Peter Hong) */ 2630c9bd600SJi-Ze Hong (Peter Hong) static int f81534_wait_for_spi_idle(struct usb_serial *serial) 2640c9bd600SJi-Ze Hong (Peter Hong) { 2650c9bd600SJi-Ze Hong (Peter Hong) size_t count = F81534_MAX_BUS_RETRY; 2660c9bd600SJi-Ze Hong (Peter Hong) u8 tmp; 2670c9bd600SJi-Ze Hong (Peter Hong) int status; 2680c9bd600SJi-Ze Hong (Peter Hong) 2690c9bd600SJi-Ze Hong (Peter Hong) do { 2700c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_register(serial, F81534_BUS_REG_STATUS, 2710c9bd600SJi-Ze Hong (Peter Hong) &tmp); 2720c9bd600SJi-Ze Hong (Peter Hong) if (status) 2730c9bd600SJi-Ze Hong (Peter Hong) return status; 2740c9bd600SJi-Ze Hong (Peter Hong) 2750c9bd600SJi-Ze Hong (Peter Hong) if (tmp & F81534_BUS_BUSY) 2760c9bd600SJi-Ze Hong (Peter Hong) continue; 2770c9bd600SJi-Ze Hong (Peter Hong) 2780c9bd600SJi-Ze Hong (Peter Hong) if (tmp & F81534_BUS_IDLE) 2790c9bd600SJi-Ze Hong (Peter Hong) break; 2800c9bd600SJi-Ze Hong (Peter Hong) 2810c9bd600SJi-Ze Hong (Peter Hong) } while (--count); 2820c9bd600SJi-Ze Hong (Peter Hong) 2830c9bd600SJi-Ze Hong (Peter Hong) if (!count) { 2840c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 2850c9bd600SJi-Ze Hong (Peter Hong) "%s: timed out waiting for idle SPI bus\n", 2860c9bd600SJi-Ze Hong (Peter Hong) __func__); 2870c9bd600SJi-Ze Hong (Peter Hong) return -EIO; 2880c9bd600SJi-Ze Hong (Peter Hong) } 2890c9bd600SJi-Ze Hong (Peter Hong) 2900c9bd600SJi-Ze Hong (Peter Hong) return f81534_set_register(serial, F81534_BUS_REG_STATUS, 2910c9bd600SJi-Ze Hong (Peter Hong) tmp & ~F81534_BUS_IDLE); 2920c9bd600SJi-Ze Hong (Peter Hong) } 2930c9bd600SJi-Ze Hong (Peter Hong) 2940c9bd600SJi-Ze Hong (Peter Hong) static int f81534_get_spi_register(struct usb_serial *serial, u16 reg, 2950c9bd600SJi-Ze Hong (Peter Hong) u8 *data) 2960c9bd600SJi-Ze Hong (Peter Hong) { 2970c9bd600SJi-Ze Hong (Peter Hong) int status; 2980c9bd600SJi-Ze Hong (Peter Hong) 2990c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_register(serial, reg, data); 3000c9bd600SJi-Ze Hong (Peter Hong) if (status) 3010c9bd600SJi-Ze Hong (Peter Hong) return status; 3020c9bd600SJi-Ze Hong (Peter Hong) 3030c9bd600SJi-Ze Hong (Peter Hong) return f81534_wait_for_spi_idle(serial); 3040c9bd600SJi-Ze Hong (Peter Hong) } 3050c9bd600SJi-Ze Hong (Peter Hong) 3060c9bd600SJi-Ze Hong (Peter Hong) static int f81534_set_spi_register(struct usb_serial *serial, u16 reg, u8 data) 3070c9bd600SJi-Ze Hong (Peter Hong) { 3080c9bd600SJi-Ze Hong (Peter Hong) int status; 3090c9bd600SJi-Ze Hong (Peter Hong) 3100c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_register(serial, reg, data); 3110c9bd600SJi-Ze Hong (Peter Hong) if (status) 3120c9bd600SJi-Ze Hong (Peter Hong) return status; 3130c9bd600SJi-Ze Hong (Peter Hong) 3140c9bd600SJi-Ze Hong (Peter Hong) return f81534_wait_for_spi_idle(serial); 3150c9bd600SJi-Ze Hong (Peter Hong) } 3160c9bd600SJi-Ze Hong (Peter Hong) 3170c9bd600SJi-Ze Hong (Peter Hong) static int f81534_read_flash(struct usb_serial *serial, u32 address, 3180c9bd600SJi-Ze Hong (Peter Hong) size_t size, u8 *buf) 3190c9bd600SJi-Ze Hong (Peter Hong) { 3200c9bd600SJi-Ze Hong (Peter Hong) u8 tmp_buf[F81534_MAX_DATA_BLOCK]; 3210c9bd600SJi-Ze Hong (Peter Hong) size_t block = 0; 3220c9bd600SJi-Ze Hong (Peter Hong) size_t read_size; 3230c9bd600SJi-Ze Hong (Peter Hong) size_t count; 3240c9bd600SJi-Ze Hong (Peter Hong) int status; 3250c9bd600SJi-Ze Hong (Peter Hong) int offset; 3260c9bd600SJi-Ze Hong (Peter Hong) u16 reg_tmp; 3270c9bd600SJi-Ze Hong (Peter Hong) 3280c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 3290c9bd600SJi-Ze Hong (Peter Hong) F81534_CMD_READ); 3300c9bd600SJi-Ze Hong (Peter Hong) if (status) 3310c9bd600SJi-Ze Hong (Peter Hong) return status; 3320c9bd600SJi-Ze Hong (Peter Hong) 3330c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 3340c9bd600SJi-Ze Hong (Peter Hong) (address >> 16) & 0xff); 3350c9bd600SJi-Ze Hong (Peter Hong) if (status) 3360c9bd600SJi-Ze Hong (Peter Hong) return status; 3370c9bd600SJi-Ze Hong (Peter Hong) 3380c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 3390c9bd600SJi-Ze Hong (Peter Hong) (address >> 8) & 0xff); 3400c9bd600SJi-Ze Hong (Peter Hong) if (status) 3410c9bd600SJi-Ze Hong (Peter Hong) return status; 3420c9bd600SJi-Ze Hong (Peter Hong) 3430c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 3440c9bd600SJi-Ze Hong (Peter Hong) (address >> 0) & 0xff); 3450c9bd600SJi-Ze Hong (Peter Hong) if (status) 3460c9bd600SJi-Ze Hong (Peter Hong) return status; 3470c9bd600SJi-Ze Hong (Peter Hong) 3480c9bd600SJi-Ze Hong (Peter Hong) /* Continuous read mode */ 3490c9bd600SJi-Ze Hong (Peter Hong) do { 3500c9bd600SJi-Ze Hong (Peter Hong) read_size = min_t(size_t, F81534_MAX_DATA_BLOCK, size); 3510c9bd600SJi-Ze Hong (Peter Hong) 3520c9bd600SJi-Ze Hong (Peter Hong) for (count = 0; count < read_size; ++count) { 3530c9bd600SJi-Ze Hong (Peter Hong) /* To write F81534_BUS_REG_END when final byte */ 3540c9bd600SJi-Ze Hong (Peter Hong) if (size <= F81534_MAX_DATA_BLOCK && 3550c9bd600SJi-Ze Hong (Peter Hong) read_size == count + 1) 3560c9bd600SJi-Ze Hong (Peter Hong) reg_tmp = F81534_BUS_REG_END; 3570c9bd600SJi-Ze Hong (Peter Hong) else 3580c9bd600SJi-Ze Hong (Peter Hong) reg_tmp = F81534_BUS_REG_START; 3590c9bd600SJi-Ze Hong (Peter Hong) 3600c9bd600SJi-Ze Hong (Peter Hong) /* 3610c9bd600SJi-Ze Hong (Peter Hong) * Dummy code, force IC to generate a read pulse, the 3620c9bd600SJi-Ze Hong (Peter Hong) * set of value 0xf1 is dont care (any value is ok) 3630c9bd600SJi-Ze Hong (Peter Hong) */ 3640c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, reg_tmp, 3650c9bd600SJi-Ze Hong (Peter Hong) 0xf1); 3660c9bd600SJi-Ze Hong (Peter Hong) if (status) 3670c9bd600SJi-Ze Hong (Peter Hong) return status; 3680c9bd600SJi-Ze Hong (Peter Hong) 3690c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_spi_register(serial, 3700c9bd600SJi-Ze Hong (Peter Hong) F81534_BUS_READ_DATA, 3710c9bd600SJi-Ze Hong (Peter Hong) &tmp_buf[count]); 3720c9bd600SJi-Ze Hong (Peter Hong) if (status) 3730c9bd600SJi-Ze Hong (Peter Hong) return status; 3740c9bd600SJi-Ze Hong (Peter Hong) 3750c9bd600SJi-Ze Hong (Peter Hong) offset = count + block * F81534_MAX_DATA_BLOCK; 3760c9bd600SJi-Ze Hong (Peter Hong) buf[offset] = tmp_buf[count]; 3770c9bd600SJi-Ze Hong (Peter Hong) } 3780c9bd600SJi-Ze Hong (Peter Hong) 3790c9bd600SJi-Ze Hong (Peter Hong) size -= read_size; 3800c9bd600SJi-Ze Hong (Peter Hong) ++block; 3810c9bd600SJi-Ze Hong (Peter Hong) } while (size); 3820c9bd600SJi-Ze Hong (Peter Hong) 3830c9bd600SJi-Ze Hong (Peter Hong) return 0; 3840c9bd600SJi-Ze Hong (Peter Hong) } 3850c9bd600SJi-Ze Hong (Peter Hong) 3860c9bd600SJi-Ze Hong (Peter Hong) static void f81534_prepare_write_buffer(struct usb_serial_port *port, u8 *buf) 3870c9bd600SJi-Ze Hong (Peter Hong) { 3880c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 3890c9bd600SJi-Ze Hong (Peter Hong) int phy_num = port_priv->phy_num; 3900c9bd600SJi-Ze Hong (Peter Hong) u8 tx_len; 3910c9bd600SJi-Ze Hong (Peter Hong) int i; 3920c9bd600SJi-Ze Hong (Peter Hong) 3930c9bd600SJi-Ze Hong (Peter Hong) /* 3940c9bd600SJi-Ze Hong (Peter Hong) * The block layout is fixed with 4x128 Bytes, per 128 Bytes a port. 3950c9bd600SJi-Ze Hong (Peter Hong) * index 0: port phy idx (e.g., 0,1,2,3) 3960c9bd600SJi-Ze Hong (Peter Hong) * index 1: only F81534_TOKEN_WRITE 3970c9bd600SJi-Ze Hong (Peter Hong) * index 2: serial TX out length 3980c9bd600SJi-Ze Hong (Peter Hong) * index 3: fix to 0 3990c9bd600SJi-Ze Hong (Peter Hong) * index 4~127: serial out data block 4000c9bd600SJi-Ze Hong (Peter Hong) */ 4010c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 4020c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE] = i; 4030c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE + 1] = F81534_TOKEN_WRITE; 4040c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE + 2] = 0; 4050c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE + 3] = 0; 4060c9bd600SJi-Ze Hong (Peter Hong) } 4070c9bd600SJi-Ze Hong (Peter Hong) 4080c9bd600SJi-Ze Hong (Peter Hong) tx_len = kfifo_out_locked(&port->write_fifo, 4090c9bd600SJi-Ze Hong (Peter Hong) &buf[phy_num * F81534_RECEIVE_BLOCK_SIZE + 4], 4100c9bd600SJi-Ze Hong (Peter Hong) F81534_MAX_TX_SIZE, &port->lock); 4110c9bd600SJi-Ze Hong (Peter Hong) 4120c9bd600SJi-Ze Hong (Peter Hong) buf[phy_num * F81534_RECEIVE_BLOCK_SIZE + 2] = tx_len; 4130c9bd600SJi-Ze Hong (Peter Hong) } 4140c9bd600SJi-Ze Hong (Peter Hong) 4150c9bd600SJi-Ze Hong (Peter Hong) static int f81534_submit_writer(struct usb_serial_port *port, gfp_t mem_flags) 4160c9bd600SJi-Ze Hong (Peter Hong) { 4170c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 4180c9bd600SJi-Ze Hong (Peter Hong) struct urb *urb; 4190c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 4200c9bd600SJi-Ze Hong (Peter Hong) int result; 4210c9bd600SJi-Ze Hong (Peter Hong) 4220c9bd600SJi-Ze Hong (Peter Hong) /* Check is any data in write_fifo */ 4230c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port->lock, flags); 4240c9bd600SJi-Ze Hong (Peter Hong) 4250c9bd600SJi-Ze Hong (Peter Hong) if (kfifo_is_empty(&port->write_fifo)) { 4260c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port->lock, flags); 4270c9bd600SJi-Ze Hong (Peter Hong) return 0; 4280c9bd600SJi-Ze Hong (Peter Hong) } 4290c9bd600SJi-Ze Hong (Peter Hong) 4300c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port->lock, flags); 4310c9bd600SJi-Ze Hong (Peter Hong) 4320c9bd600SJi-Ze Hong (Peter Hong) /* Check H/W is TXEMPTY */ 4330c9bd600SJi-Ze Hong (Peter Hong) if (!test_and_clear_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty)) 4340c9bd600SJi-Ze Hong (Peter Hong) return 0; 4350c9bd600SJi-Ze Hong (Peter Hong) 4360c9bd600SJi-Ze Hong (Peter Hong) urb = port->write_urbs[0]; 4370c9bd600SJi-Ze Hong (Peter Hong) f81534_prepare_write_buffer(port, port->bulk_out_buffers[0]); 4380c9bd600SJi-Ze Hong (Peter Hong) urb->transfer_buffer_length = F81534_WRITE_BUFFER_SIZE; 4390c9bd600SJi-Ze Hong (Peter Hong) 4400c9bd600SJi-Ze Hong (Peter Hong) result = usb_submit_urb(urb, mem_flags); 4410c9bd600SJi-Ze Hong (Peter Hong) if (result) { 4420c9bd600SJi-Ze Hong (Peter Hong) set_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 4430c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed: %d\n", __func__, 4440c9bd600SJi-Ze Hong (Peter Hong) result); 4450c9bd600SJi-Ze Hong (Peter Hong) return result; 4460c9bd600SJi-Ze Hong (Peter Hong) } 4470c9bd600SJi-Ze Hong (Peter Hong) 4480c9bd600SJi-Ze Hong (Peter Hong) usb_serial_port_softint(port); 4490c9bd600SJi-Ze Hong (Peter Hong) return 0; 4500c9bd600SJi-Ze Hong (Peter Hong) } 4510c9bd600SJi-Ze Hong (Peter Hong) 4520c9bd600SJi-Ze Hong (Peter Hong) static u32 f81534_calc_baud_divisor(u32 baudrate, u32 clockrate) 4530c9bd600SJi-Ze Hong (Peter Hong) { 4540c9bd600SJi-Ze Hong (Peter Hong) if (!baudrate) 4550c9bd600SJi-Ze Hong (Peter Hong) return 0; 4560c9bd600SJi-Ze Hong (Peter Hong) 4570c9bd600SJi-Ze Hong (Peter Hong) /* Round to nearest divisor */ 4580c9bd600SJi-Ze Hong (Peter Hong) return DIV_ROUND_CLOSEST(clockrate, baudrate); 4590c9bd600SJi-Ze Hong (Peter Hong) } 4600c9bd600SJi-Ze Hong (Peter Hong) 4610c9bd600SJi-Ze Hong (Peter Hong) static int f81534_set_port_config(struct usb_serial_port *port, u32 baudrate, 4620c9bd600SJi-Ze Hong (Peter Hong) u8 lcr) 4630c9bd600SJi-Ze Hong (Peter Hong) { 4640c9bd600SJi-Ze Hong (Peter Hong) u32 divisor; 4650c9bd600SJi-Ze Hong (Peter Hong) int status; 4660c9bd600SJi-Ze Hong (Peter Hong) u8 value; 4670c9bd600SJi-Ze Hong (Peter Hong) 4680c9bd600SJi-Ze Hong (Peter Hong) if (baudrate <= 1200) 4690c9bd600SJi-Ze Hong (Peter Hong) value = F81534_1X_RXTRIGGER; /* 128 FIFO & TL: 1x */ 4700c9bd600SJi-Ze Hong (Peter Hong) else 4710c9bd600SJi-Ze Hong (Peter Hong) value = F81534_8X_RXTRIGGER; /* 128 FIFO & TL: 8x */ 4720c9bd600SJi-Ze Hong (Peter Hong) 4730c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_CONFIG1_REG, value); 4740c9bd600SJi-Ze Hong (Peter Hong) if (status) { 4750c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: CONFIG1 setting failed\n", __func__); 4760c9bd600SJi-Ze Hong (Peter Hong) return status; 4770c9bd600SJi-Ze Hong (Peter Hong) } 4780c9bd600SJi-Ze Hong (Peter Hong) 4790c9bd600SJi-Ze Hong (Peter Hong) if (baudrate <= 1200) 4800c9bd600SJi-Ze Hong (Peter Hong) value = UART_FCR_TRIGGER_1 | UART_FCR_ENABLE_FIFO; /* TL: 1 */ 4810c9bd600SJi-Ze Hong (Peter Hong) else 4820c9bd600SJi-Ze Hong (Peter Hong) value = UART_FCR_R_TRIG_11 | UART_FCR_ENABLE_FIFO; /* TL: 14 */ 4830c9bd600SJi-Ze Hong (Peter Hong) 4840c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_FIFO_CONTROL_REG, 4850c9bd600SJi-Ze Hong (Peter Hong) value); 4860c9bd600SJi-Ze Hong (Peter Hong) if (status) { 4870c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: FCR setting failed\n", __func__); 4880c9bd600SJi-Ze Hong (Peter Hong) return status; 4890c9bd600SJi-Ze Hong (Peter Hong) } 4900c9bd600SJi-Ze Hong (Peter Hong) 4910c9bd600SJi-Ze Hong (Peter Hong) divisor = f81534_calc_baud_divisor(baudrate, F81534_MAX_BAUDRATE); 4920c9bd600SJi-Ze Hong (Peter Hong) value = UART_LCR_DLAB; 4930c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG, 4940c9bd600SJi-Ze Hong (Peter Hong) value); 4950c9bd600SJi-Ze Hong (Peter Hong) if (status) { 4960c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set LCR failed\n", __func__); 4970c9bd600SJi-Ze Hong (Peter Hong) return status; 4980c9bd600SJi-Ze Hong (Peter Hong) } 4990c9bd600SJi-Ze Hong (Peter Hong) 5000c9bd600SJi-Ze Hong (Peter Hong) value = divisor & 0xff; 5010c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_DIVISOR_LSB_REG, value); 5020c9bd600SJi-Ze Hong (Peter Hong) if (status) { 5030c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set DLAB LSB failed\n", __func__); 5040c9bd600SJi-Ze Hong (Peter Hong) return status; 5050c9bd600SJi-Ze Hong (Peter Hong) } 5060c9bd600SJi-Ze Hong (Peter Hong) 5070c9bd600SJi-Ze Hong (Peter Hong) value = (divisor >> 8) & 0xff; 5080c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_DIVISOR_MSB_REG, value); 5090c9bd600SJi-Ze Hong (Peter Hong) if (status) { 5100c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set DLAB MSB failed\n", __func__); 5110c9bd600SJi-Ze Hong (Peter Hong) return status; 5120c9bd600SJi-Ze Hong (Peter Hong) } 5130c9bd600SJi-Ze Hong (Peter Hong) 5140c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG, lcr); 5150c9bd600SJi-Ze Hong (Peter Hong) if (status) { 5160c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set LCR failed\n", __func__); 5170c9bd600SJi-Ze Hong (Peter Hong) return status; 5180c9bd600SJi-Ze Hong (Peter Hong) } 5190c9bd600SJi-Ze Hong (Peter Hong) 5200c9bd600SJi-Ze Hong (Peter Hong) return 0; 5210c9bd600SJi-Ze Hong (Peter Hong) } 5220c9bd600SJi-Ze Hong (Peter Hong) 5230c9bd600SJi-Ze Hong (Peter Hong) static int f81534_update_mctrl(struct usb_serial_port *port, unsigned int set, 5240c9bd600SJi-Ze Hong (Peter Hong) unsigned int clear) 5250c9bd600SJi-Ze Hong (Peter Hong) { 5260c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 5270c9bd600SJi-Ze Hong (Peter Hong) int status; 5280c9bd600SJi-Ze Hong (Peter Hong) u8 tmp; 5290c9bd600SJi-Ze Hong (Peter Hong) 5300c9bd600SJi-Ze Hong (Peter Hong) if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) 5310c9bd600SJi-Ze Hong (Peter Hong) return 0; /* no change */ 5320c9bd600SJi-Ze Hong (Peter Hong) 5330c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&port_priv->mcr_mutex); 5340c9bd600SJi-Ze Hong (Peter Hong) 5350c9bd600SJi-Ze Hong (Peter Hong) /* 'Set' takes precedence over 'Clear' */ 5360c9bd600SJi-Ze Hong (Peter Hong) clear &= ~set; 5370c9bd600SJi-Ze Hong (Peter Hong) 5380c9bd600SJi-Ze Hong (Peter Hong) /* Always enable UART_MCR_OUT2 */ 5390c9bd600SJi-Ze Hong (Peter Hong) tmp = UART_MCR_OUT2 | port_priv->shadow_mcr; 5400c9bd600SJi-Ze Hong (Peter Hong) 5410c9bd600SJi-Ze Hong (Peter Hong) if (clear & TIOCM_DTR) 5420c9bd600SJi-Ze Hong (Peter Hong) tmp &= ~UART_MCR_DTR; 5430c9bd600SJi-Ze Hong (Peter Hong) 5440c9bd600SJi-Ze Hong (Peter Hong) if (clear & TIOCM_RTS) 5450c9bd600SJi-Ze Hong (Peter Hong) tmp &= ~UART_MCR_RTS; 5460c9bd600SJi-Ze Hong (Peter Hong) 5470c9bd600SJi-Ze Hong (Peter Hong) if (set & TIOCM_DTR) 5480c9bd600SJi-Ze Hong (Peter Hong) tmp |= UART_MCR_DTR; 5490c9bd600SJi-Ze Hong (Peter Hong) 5500c9bd600SJi-Ze Hong (Peter Hong) if (set & TIOCM_RTS) 5510c9bd600SJi-Ze Hong (Peter Hong) tmp |= UART_MCR_RTS; 5520c9bd600SJi-Ze Hong (Peter Hong) 5530c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_MODEM_CONTROL_REG, tmp); 5540c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 5550c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: MCR write failed\n", __func__); 5560c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->mcr_mutex); 5570c9bd600SJi-Ze Hong (Peter Hong) return status; 5580c9bd600SJi-Ze Hong (Peter Hong) } 5590c9bd600SJi-Ze Hong (Peter Hong) 5600c9bd600SJi-Ze Hong (Peter Hong) port_priv->shadow_mcr = tmp; 5610c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->mcr_mutex); 5620c9bd600SJi-Ze Hong (Peter Hong) return 0; 5630c9bd600SJi-Ze Hong (Peter Hong) } 5640c9bd600SJi-Ze Hong (Peter Hong) 5650c9bd600SJi-Ze Hong (Peter Hong) /* 5660c9bd600SJi-Ze Hong (Peter Hong) * This function will search the data area with token F81534_CUSTOM_VALID_TOKEN 5670c9bd600SJi-Ze Hong (Peter Hong) * for latest configuration index. If nothing found 5680c9bd600SJi-Ze Hong (Peter Hong) * (*index = F81534_CUSTOM_NO_CUSTOM_DATA), We'll load default configure in 5690c9bd600SJi-Ze Hong (Peter Hong) * F81534_DEF_CONF_ADDRESS_START section. 5700c9bd600SJi-Ze Hong (Peter Hong) * 5710c9bd600SJi-Ze Hong (Peter Hong) * Due to we only use block0 to save data, so *index should be 0 or 5720c9bd600SJi-Ze Hong (Peter Hong) * F81534_CUSTOM_NO_CUSTOM_DATA. 5730c9bd600SJi-Ze Hong (Peter Hong) */ 5740c9bd600SJi-Ze Hong (Peter Hong) static int f81534_find_config_idx(struct usb_serial *serial, u8 *index) 5750c9bd600SJi-Ze Hong (Peter Hong) { 5760c9bd600SJi-Ze Hong (Peter Hong) u8 tmp; 5770c9bd600SJi-Ze Hong (Peter Hong) int status; 5780c9bd600SJi-Ze Hong (Peter Hong) 5790c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, F81534_CUSTOM_ADDRESS_START, 1, 5800c9bd600SJi-Ze Hong (Peter Hong) &tmp); 5810c9bd600SJi-Ze Hong (Peter Hong) if (status) { 5820c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, "%s: read failed: %d\n", 5830c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 5840c9bd600SJi-Ze Hong (Peter Hong) return status; 5850c9bd600SJi-Ze Hong (Peter Hong) } 5860c9bd600SJi-Ze Hong (Peter Hong) 5870c9bd600SJi-Ze Hong (Peter Hong) /* We'll use the custom data when the data is valid. */ 5880c9bd600SJi-Ze Hong (Peter Hong) if (tmp == F81534_CUSTOM_VALID_TOKEN) 5890c9bd600SJi-Ze Hong (Peter Hong) *index = 0; 5900c9bd600SJi-Ze Hong (Peter Hong) else 5910c9bd600SJi-Ze Hong (Peter Hong) *index = F81534_CUSTOM_NO_CUSTOM_DATA; 5920c9bd600SJi-Ze Hong (Peter Hong) 5930c9bd600SJi-Ze Hong (Peter Hong) return 0; 5940c9bd600SJi-Ze Hong (Peter Hong) } 5950c9bd600SJi-Ze Hong (Peter Hong) 5960c9bd600SJi-Ze Hong (Peter Hong) /* 5970c9bd600SJi-Ze Hong (Peter Hong) * We had 2 generation of F81532/534 IC. All has an internal storage. 5980c9bd600SJi-Ze Hong (Peter Hong) * 5990c9bd600SJi-Ze Hong (Peter Hong) * 1st is pure USB-to-TTL RS232 IC and designed for 4 ports only, no any 6000c9bd600SJi-Ze Hong (Peter Hong) * internal data will used. All mode and gpio control should manually set 6010c9bd600SJi-Ze Hong (Peter Hong) * by AP or Driver and all storage space value are 0xff. The 6020c9bd600SJi-Ze Hong (Peter Hong) * f81534_calc_num_ports() will run to final we marked as "oldest version" 6030c9bd600SJi-Ze Hong (Peter Hong) * for this IC. 6040c9bd600SJi-Ze Hong (Peter Hong) * 6050c9bd600SJi-Ze Hong (Peter Hong) * 2rd is designed to more generic to use any transceiver and this is our 6060c9bd600SJi-Ze Hong (Peter Hong) * mass production type. We'll save data in F81534_CUSTOM_ADDRESS_START 6070c9bd600SJi-Ze Hong (Peter Hong) * (0x2f00) with 9bytes. The 1st byte is a indicater. If the token is 6080c9bd600SJi-Ze Hong (Peter Hong) * F81534_CUSTOM_VALID_TOKEN(0xf0), the IC is 2nd gen type, the following 6090c9bd600SJi-Ze Hong (Peter Hong) * 4bytes save port mode (0:RS232/1:RS485 Invert/2:RS485), and the last 6100c9bd600SJi-Ze Hong (Peter Hong) * 4bytes save GPIO state(value from 0~7 to represent 3 GPIO output pin). 6110c9bd600SJi-Ze Hong (Peter Hong) * The f81534_calc_num_ports() will run to "new style" with checking 6120c9bd600SJi-Ze Hong (Peter Hong) * F81534_PORT_UNAVAILABLE section. 6130c9bd600SJi-Ze Hong (Peter Hong) */ 61407814246SJohan Hovold static int f81534_calc_num_ports(struct usb_serial *serial, 61507814246SJohan Hovold struct usb_serial_endpoints *epds) 6160c9bd600SJi-Ze Hong (Peter Hong) { 617cac4cea5SJohan Hovold struct device *dev = &serial->interface->dev; 618cac4cea5SJohan Hovold int size_bulk_in = usb_endpoint_maxp(epds->bulk_in[0]); 619cac4cea5SJohan Hovold int size_bulk_out = usb_endpoint_maxp(epds->bulk_out[0]); 6200c9bd600SJi-Ze Hong (Peter Hong) u8 setting[F81534_CUSTOM_DATA_SIZE]; 6210c9bd600SJi-Ze Hong (Peter Hong) u8 setting_idx; 6220c9bd600SJi-Ze Hong (Peter Hong) u8 num_port = 0; 6230c9bd600SJi-Ze Hong (Peter Hong) int status; 6240c9bd600SJi-Ze Hong (Peter Hong) size_t i; 6250c9bd600SJi-Ze Hong (Peter Hong) 626cac4cea5SJohan Hovold if (size_bulk_out != F81534_WRITE_BUFFER_SIZE || 627cac4cea5SJohan Hovold size_bulk_in != F81534_MAX_RECEIVE_BLOCK_SIZE) { 628cac4cea5SJohan Hovold dev_err(dev, "unsupported endpoint max packet size\n"); 629cac4cea5SJohan Hovold return -ENODEV; 630cac4cea5SJohan Hovold } 631cac4cea5SJohan Hovold 6320c9bd600SJi-Ze Hong (Peter Hong) /* Check had custom setting */ 6330c9bd600SJi-Ze Hong (Peter Hong) status = f81534_find_config_idx(serial, &setting_idx); 6340c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6350c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, "%s: find idx failed: %d\n", 6360c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 6372f16621bSJohan Hovold return status; 6380c9bd600SJi-Ze Hong (Peter Hong) } 6390c9bd600SJi-Ze Hong (Peter Hong) 6400c9bd600SJi-Ze Hong (Peter Hong) /* 6410c9bd600SJi-Ze Hong (Peter Hong) * We'll read custom data only when data available, otherwise we'll 6420c9bd600SJi-Ze Hong (Peter Hong) * read default value instead. 6430c9bd600SJi-Ze Hong (Peter Hong) */ 6440c9bd600SJi-Ze Hong (Peter Hong) if (setting_idx != F81534_CUSTOM_NO_CUSTOM_DATA) { 6450c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, 6460c9bd600SJi-Ze Hong (Peter Hong) F81534_CUSTOM_ADDRESS_START + 6470c9bd600SJi-Ze Hong (Peter Hong) F81534_CONF_OFFSET, 6480c9bd600SJi-Ze Hong (Peter Hong) sizeof(setting), setting); 6490c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6500c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 6510c9bd600SJi-Ze Hong (Peter Hong) "%s: get custom data failed: %d\n", 6520c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 6532f16621bSJohan Hovold return status; 6540c9bd600SJi-Ze Hong (Peter Hong) } 6550c9bd600SJi-Ze Hong (Peter Hong) 6560c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&serial->interface->dev, 6570c9bd600SJi-Ze Hong (Peter Hong) "%s: read config from block: %d\n", __func__, 6580c9bd600SJi-Ze Hong (Peter Hong) setting_idx); 6590c9bd600SJi-Ze Hong (Peter Hong) } else { 6600c9bd600SJi-Ze Hong (Peter Hong) /* Read default board setting */ 6610c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, 6620c9bd600SJi-Ze Hong (Peter Hong) F81534_DEF_CONF_ADDRESS_START, F81534_NUM_PORT, 6630c9bd600SJi-Ze Hong (Peter Hong) setting); 6640c9bd600SJi-Ze Hong (Peter Hong) 6650c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6660c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 6670c9bd600SJi-Ze Hong (Peter Hong) "%s: read failed: %d\n", __func__, 6680c9bd600SJi-Ze Hong (Peter Hong) status); 6692f16621bSJohan Hovold return status; 6700c9bd600SJi-Ze Hong (Peter Hong) } 6710c9bd600SJi-Ze Hong (Peter Hong) 6720c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&serial->interface->dev, "%s: read default config\n", 6730c9bd600SJi-Ze Hong (Peter Hong) __func__); 6740c9bd600SJi-Ze Hong (Peter Hong) } 6750c9bd600SJi-Ze Hong (Peter Hong) 6760c9bd600SJi-Ze Hong (Peter Hong) /* New style, find all possible ports */ 6770c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 6780c9bd600SJi-Ze Hong (Peter Hong) if (setting[i] & F81534_PORT_UNAVAILABLE) 6790c9bd600SJi-Ze Hong (Peter Hong) continue; 6800c9bd600SJi-Ze Hong (Peter Hong) 6810c9bd600SJi-Ze Hong (Peter Hong) ++num_port; 6820c9bd600SJi-Ze Hong (Peter Hong) } 6830c9bd600SJi-Ze Hong (Peter Hong) 6845e07240aSJohan Hovold if (!num_port) { 6855e07240aSJohan Hovold dev_warn(&serial->interface->dev, 6865e07240aSJohan Hovold "no config found, assuming 4 ports\n"); 6875e07240aSJohan Hovold num_port = 4; /* Nothing found, oldest version IC */ 6885e07240aSJohan Hovold } 6890c9bd600SJi-Ze Hong (Peter Hong) 690d5ccfce0SJohan Hovold /* 691d5ccfce0SJohan Hovold * Setup bulk-out endpoint multiplexing. All ports share the same 692d5ccfce0SJohan Hovold * bulk-out endpoint. 693d5ccfce0SJohan Hovold */ 694d5ccfce0SJohan Hovold BUILD_BUG_ON(ARRAY_SIZE(epds->bulk_out) < F81534_NUM_PORT); 695d5ccfce0SJohan Hovold 696d5ccfce0SJohan Hovold for (i = 1; i < num_port; ++i) 697d5ccfce0SJohan Hovold epds->bulk_out[i] = epds->bulk_out[0]; 698d5ccfce0SJohan Hovold 699d5ccfce0SJohan Hovold epds->num_bulk_out = num_port; 700d5ccfce0SJohan Hovold 7015e07240aSJohan Hovold return num_port; 7020c9bd600SJi-Ze Hong (Peter Hong) } 7030c9bd600SJi-Ze Hong (Peter Hong) 7040c9bd600SJi-Ze Hong (Peter Hong) static void f81534_set_termios(struct tty_struct *tty, 7050c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port, 7060c9bd600SJi-Ze Hong (Peter Hong) struct ktermios *old_termios) 7070c9bd600SJi-Ze Hong (Peter Hong) { 7080c9bd600SJi-Ze Hong (Peter Hong) u8 new_lcr = 0; 7090c9bd600SJi-Ze Hong (Peter Hong) int status; 7100c9bd600SJi-Ze Hong (Peter Hong) u32 baud; 7110c9bd600SJi-Ze Hong (Peter Hong) 7120c9bd600SJi-Ze Hong (Peter Hong) if (C_BAUD(tty) == B0) 7130c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS); 7140c9bd600SJi-Ze Hong (Peter Hong) else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) 7150c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0); 7160c9bd600SJi-Ze Hong (Peter Hong) 7170c9bd600SJi-Ze Hong (Peter Hong) if (C_PARENB(tty)) { 7180c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_PARITY; 7190c9bd600SJi-Ze Hong (Peter Hong) 7200c9bd600SJi-Ze Hong (Peter Hong) if (!C_PARODD(tty)) 7210c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_EPAR; 7220c9bd600SJi-Ze Hong (Peter Hong) 7230c9bd600SJi-Ze Hong (Peter Hong) if (C_CMSPAR(tty)) 7240c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_SPAR; 7250c9bd600SJi-Ze Hong (Peter Hong) } 7260c9bd600SJi-Ze Hong (Peter Hong) 7270c9bd600SJi-Ze Hong (Peter Hong) if (C_CSTOPB(tty)) 7280c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_STOP; 7290c9bd600SJi-Ze Hong (Peter Hong) 7300c9bd600SJi-Ze Hong (Peter Hong) switch (C_CSIZE(tty)) { 7310c9bd600SJi-Ze Hong (Peter Hong) case CS5: 7320c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_WLEN5; 7330c9bd600SJi-Ze Hong (Peter Hong) break; 7340c9bd600SJi-Ze Hong (Peter Hong) case CS6: 7350c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_WLEN6; 7360c9bd600SJi-Ze Hong (Peter Hong) break; 7370c9bd600SJi-Ze Hong (Peter Hong) case CS7: 7380c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_WLEN7; 7390c9bd600SJi-Ze Hong (Peter Hong) break; 7400c9bd600SJi-Ze Hong (Peter Hong) default: 7410c9bd600SJi-Ze Hong (Peter Hong) case CS8: 7420c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_WLEN8; 7430c9bd600SJi-Ze Hong (Peter Hong) break; 7440c9bd600SJi-Ze Hong (Peter Hong) } 7450c9bd600SJi-Ze Hong (Peter Hong) 7460c9bd600SJi-Ze Hong (Peter Hong) baud = tty_get_baud_rate(tty); 7470c9bd600SJi-Ze Hong (Peter Hong) if (!baud) 7480c9bd600SJi-Ze Hong (Peter Hong) return; 7490c9bd600SJi-Ze Hong (Peter Hong) 7500c9bd600SJi-Ze Hong (Peter Hong) if (baud > F81534_MAX_BAUDRATE) { 7510c9bd600SJi-Ze Hong (Peter Hong) if (old_termios) 7520c9bd600SJi-Ze Hong (Peter Hong) baud = tty_termios_baud_rate(old_termios); 7530c9bd600SJi-Ze Hong (Peter Hong) else 7540c9bd600SJi-Ze Hong (Peter Hong) baud = F81534_DEFAULT_BAUD_RATE; 7550c9bd600SJi-Ze Hong (Peter Hong) 7560c9bd600SJi-Ze Hong (Peter Hong) tty_encode_baud_rate(tty, baud, baud); 7570c9bd600SJi-Ze Hong (Peter Hong) } 7580c9bd600SJi-Ze Hong (Peter Hong) 7590c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: baud: %d\n", __func__, baud); 7600c9bd600SJi-Ze Hong (Peter Hong) 7610c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_config(port, baud, new_lcr); 7620c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 7630c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set port config failed: %d\n", 7640c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 7650c9bd600SJi-Ze Hong (Peter Hong) } 7660c9bd600SJi-Ze Hong (Peter Hong) } 7670c9bd600SJi-Ze Hong (Peter Hong) 7680c9bd600SJi-Ze Hong (Peter Hong) static int f81534_submit_read_urb(struct usb_serial *serial, gfp_t flags) 7690c9bd600SJi-Ze Hong (Peter Hong) { 7700c9bd600SJi-Ze Hong (Peter Hong) return usb_serial_generic_submit_read_urbs(serial->port[0], flags); 7710c9bd600SJi-Ze Hong (Peter Hong) } 7720c9bd600SJi-Ze Hong (Peter Hong) 7730c9bd600SJi-Ze Hong (Peter Hong) static void f81534_msr_changed(struct usb_serial_port *port, u8 msr) 7740c9bd600SJi-Ze Hong (Peter Hong) { 7750c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 7760c9bd600SJi-Ze Hong (Peter Hong) struct tty_struct *tty; 7770c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 7780c9bd600SJi-Ze Hong (Peter Hong) u8 old_msr; 7790c9bd600SJi-Ze Hong (Peter Hong) 7800c9bd600SJi-Ze Hong (Peter Hong) if (!(msr & UART_MSR_ANY_DELTA)) 7810c9bd600SJi-Ze Hong (Peter Hong) return; 7820c9bd600SJi-Ze Hong (Peter Hong) 7830c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port_priv->msr_lock, flags); 7840c9bd600SJi-Ze Hong (Peter Hong) old_msr = port_priv->shadow_msr; 7850c9bd600SJi-Ze Hong (Peter Hong) port_priv->shadow_msr = msr; 7860c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port_priv->msr_lock, flags); 7870c9bd600SJi-Ze Hong (Peter Hong) 7880c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: MSR from %02x to %02x\n", __func__, old_msr, 7890c9bd600SJi-Ze Hong (Peter Hong) msr); 7900c9bd600SJi-Ze Hong (Peter Hong) 7910c9bd600SJi-Ze Hong (Peter Hong) /* Update input line counters */ 7920c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_DCTS) 7930c9bd600SJi-Ze Hong (Peter Hong) port->icount.cts++; 7940c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_DDSR) 7950c9bd600SJi-Ze Hong (Peter Hong) port->icount.dsr++; 7960c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_DDCD) 7970c9bd600SJi-Ze Hong (Peter Hong) port->icount.dcd++; 7980c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_TERI) 7990c9bd600SJi-Ze Hong (Peter Hong) port->icount.rng++; 8000c9bd600SJi-Ze Hong (Peter Hong) 8010c9bd600SJi-Ze Hong (Peter Hong) wake_up_interruptible(&port->port.delta_msr_wait); 8020c9bd600SJi-Ze Hong (Peter Hong) 8030c9bd600SJi-Ze Hong (Peter Hong) if (!(msr & UART_MSR_DDCD)) 8040c9bd600SJi-Ze Hong (Peter Hong) return; 8050c9bd600SJi-Ze Hong (Peter Hong) 8060c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: DCD Changed: phy_num: %d from %x to %x\n", 8070c9bd600SJi-Ze Hong (Peter Hong) __func__, port_priv->phy_num, old_msr, msr); 8080c9bd600SJi-Ze Hong (Peter Hong) 8090c9bd600SJi-Ze Hong (Peter Hong) tty = tty_port_tty_get(&port->port); 8100c9bd600SJi-Ze Hong (Peter Hong) if (!tty) 8110c9bd600SJi-Ze Hong (Peter Hong) return; 8120c9bd600SJi-Ze Hong (Peter Hong) 8130c9bd600SJi-Ze Hong (Peter Hong) usb_serial_handle_dcd_change(port, tty, msr & UART_MSR_DCD); 8140c9bd600SJi-Ze Hong (Peter Hong) tty_kref_put(tty); 8150c9bd600SJi-Ze Hong (Peter Hong) } 8160c9bd600SJi-Ze Hong (Peter Hong) 8170c9bd600SJi-Ze Hong (Peter Hong) static int f81534_read_msr(struct usb_serial_port *port) 8180c9bd600SJi-Ze Hong (Peter Hong) { 8190c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 8200c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 8210c9bd600SJi-Ze Hong (Peter Hong) int status; 8220c9bd600SJi-Ze Hong (Peter Hong) u8 msr; 8230c9bd600SJi-Ze Hong (Peter Hong) 8240c9bd600SJi-Ze Hong (Peter Hong) /* Get MSR initial value */ 8250c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_port_register(port, F81534_MODEM_STATUS_REG, &msr); 8260c9bd600SJi-Ze Hong (Peter Hong) if (status) 8270c9bd600SJi-Ze Hong (Peter Hong) return status; 8280c9bd600SJi-Ze Hong (Peter Hong) 8290c9bd600SJi-Ze Hong (Peter Hong) /* Force update current state */ 8300c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port_priv->msr_lock, flags); 8310c9bd600SJi-Ze Hong (Peter Hong) port_priv->shadow_msr = msr; 8320c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port_priv->msr_lock, flags); 8330c9bd600SJi-Ze Hong (Peter Hong) 8340c9bd600SJi-Ze Hong (Peter Hong) return 0; 8350c9bd600SJi-Ze Hong (Peter Hong) } 8360c9bd600SJi-Ze Hong (Peter Hong) 8370c9bd600SJi-Ze Hong (Peter Hong) static int f81534_open(struct tty_struct *tty, struct usb_serial_port *port) 8380c9bd600SJi-Ze Hong (Peter Hong) { 8390c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 8400c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(port->serial); 8410c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 8420c9bd600SJi-Ze Hong (Peter Hong) int status; 8430c9bd600SJi-Ze Hong (Peter Hong) 8440c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, 8450c9bd600SJi-Ze Hong (Peter Hong) F81534_FIFO_CONTROL_REG, UART_FCR_ENABLE_FIFO | 8460c9bd600SJi-Ze Hong (Peter Hong) UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); 8470c9bd600SJi-Ze Hong (Peter Hong) if (status) { 8480c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: Clear FIFO failed: %d\n", __func__, 8490c9bd600SJi-Ze Hong (Peter Hong) status); 8500c9bd600SJi-Ze Hong (Peter Hong) return status; 8510c9bd600SJi-Ze Hong (Peter Hong) } 8520c9bd600SJi-Ze Hong (Peter Hong) 8530c9bd600SJi-Ze Hong (Peter Hong) if (tty) 8540c9bd600SJi-Ze Hong (Peter Hong) f81534_set_termios(tty, port, NULL); 8550c9bd600SJi-Ze Hong (Peter Hong) 8560c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_msr(port); 8570c9bd600SJi-Ze Hong (Peter Hong) if (status) 8580c9bd600SJi-Ze Hong (Peter Hong) return status; 8590c9bd600SJi-Ze Hong (Peter Hong) 8600c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&serial_priv->urb_mutex); 8610c9bd600SJi-Ze Hong (Peter Hong) 8620c9bd600SJi-Ze Hong (Peter Hong) /* Submit Read URBs for first port opened */ 8630c9bd600SJi-Ze Hong (Peter Hong) if (!serial_priv->opened_port) { 8640c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_read_urb(port->serial, GFP_KERNEL); 8650c9bd600SJi-Ze Hong (Peter Hong) if (status) 8660c9bd600SJi-Ze Hong (Peter Hong) goto exit; 8670c9bd600SJi-Ze Hong (Peter Hong) } 8680c9bd600SJi-Ze Hong (Peter Hong) 8690c9bd600SJi-Ze Hong (Peter Hong) serial_priv->opened_port++; 8700c9bd600SJi-Ze Hong (Peter Hong) 8710c9bd600SJi-Ze Hong (Peter Hong) exit: 8720c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 8730c9bd600SJi-Ze Hong (Peter Hong) 8740c9bd600SJi-Ze Hong (Peter Hong) set_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 8750c9bd600SJi-Ze Hong (Peter Hong) return status; 8760c9bd600SJi-Ze Hong (Peter Hong) } 8770c9bd600SJi-Ze Hong (Peter Hong) 8780c9bd600SJi-Ze Hong (Peter Hong) static void f81534_close(struct usb_serial_port *port) 8790c9bd600SJi-Ze Hong (Peter Hong) { 8800c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 8810c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(port->serial); 8820c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port0 = port->serial->port[0]; 8830c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 8840c9bd600SJi-Ze Hong (Peter Hong) size_t i; 8850c9bd600SJi-Ze Hong (Peter Hong) 8860c9bd600SJi-Ze Hong (Peter Hong) usb_kill_urb(port->write_urbs[0]); 8870c9bd600SJi-Ze Hong (Peter Hong) 8880c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port->lock, flags); 8890c9bd600SJi-Ze Hong (Peter Hong) kfifo_reset_out(&port->write_fifo); 8900c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port->lock, flags); 8910c9bd600SJi-Ze Hong (Peter Hong) 8920c9bd600SJi-Ze Hong (Peter Hong) /* Kill Read URBs when final port closed */ 8930c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&serial_priv->urb_mutex); 8940c9bd600SJi-Ze Hong (Peter Hong) serial_priv->opened_port--; 8950c9bd600SJi-Ze Hong (Peter Hong) 8960c9bd600SJi-Ze Hong (Peter Hong) if (!serial_priv->opened_port) { 8970c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < ARRAY_SIZE(port0->read_urbs); ++i) 8980c9bd600SJi-Ze Hong (Peter Hong) usb_kill_urb(port0->read_urbs[i]); 8990c9bd600SJi-Ze Hong (Peter Hong) } 9000c9bd600SJi-Ze Hong (Peter Hong) 9010c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 9020c9bd600SJi-Ze Hong (Peter Hong) } 9030c9bd600SJi-Ze Hong (Peter Hong) 9040c9bd600SJi-Ze Hong (Peter Hong) static int f81534_get_serial_info(struct usb_serial_port *port, 9050c9bd600SJi-Ze Hong (Peter Hong) struct serial_struct __user *retinfo) 9060c9bd600SJi-Ze Hong (Peter Hong) { 9070c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv; 9080c9bd600SJi-Ze Hong (Peter Hong) struct serial_struct tmp; 9090c9bd600SJi-Ze Hong (Peter Hong) 9100c9bd600SJi-Ze Hong (Peter Hong) port_priv = usb_get_serial_port_data(port); 9110c9bd600SJi-Ze Hong (Peter Hong) 9120c9bd600SJi-Ze Hong (Peter Hong) memset(&tmp, 0, sizeof(tmp)); 9130c9bd600SJi-Ze Hong (Peter Hong) 9140c9bd600SJi-Ze Hong (Peter Hong) tmp.type = PORT_16550A; 9150c9bd600SJi-Ze Hong (Peter Hong) tmp.port = port->port_number; 9160c9bd600SJi-Ze Hong (Peter Hong) tmp.line = port->minor; 9170c9bd600SJi-Ze Hong (Peter Hong) tmp.baud_base = F81534_MAX_BAUDRATE; 9180c9bd600SJi-Ze Hong (Peter Hong) 9190c9bd600SJi-Ze Hong (Peter Hong) if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 9200c9bd600SJi-Ze Hong (Peter Hong) return -EFAULT; 9210c9bd600SJi-Ze Hong (Peter Hong) 9220c9bd600SJi-Ze Hong (Peter Hong) return 0; 9230c9bd600SJi-Ze Hong (Peter Hong) } 9240c9bd600SJi-Ze Hong (Peter Hong) 9250c9bd600SJi-Ze Hong (Peter Hong) static int f81534_ioctl(struct tty_struct *tty, unsigned int cmd, 9260c9bd600SJi-Ze Hong (Peter Hong) unsigned long arg) 9270c9bd600SJi-Ze Hong (Peter Hong) { 9280c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = tty->driver_data; 9290c9bd600SJi-Ze Hong (Peter Hong) struct serial_struct __user *buf = (struct serial_struct __user *)arg; 9300c9bd600SJi-Ze Hong (Peter Hong) 9310c9bd600SJi-Ze Hong (Peter Hong) switch (cmd) { 9320c9bd600SJi-Ze Hong (Peter Hong) case TIOCGSERIAL: 9330c9bd600SJi-Ze Hong (Peter Hong) return f81534_get_serial_info(port, buf); 9340c9bd600SJi-Ze Hong (Peter Hong) default: 9350c9bd600SJi-Ze Hong (Peter Hong) break; 9360c9bd600SJi-Ze Hong (Peter Hong) } 9370c9bd600SJi-Ze Hong (Peter Hong) 9380c9bd600SJi-Ze Hong (Peter Hong) return -ENOIOCTLCMD; 9390c9bd600SJi-Ze Hong (Peter Hong) } 9400c9bd600SJi-Ze Hong (Peter Hong) 9410c9bd600SJi-Ze Hong (Peter Hong) static void f81534_process_per_serial_block(struct usb_serial_port *port, 9420c9bd600SJi-Ze Hong (Peter Hong) u8 *data) 9430c9bd600SJi-Ze Hong (Peter Hong) { 9440c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 9450c9bd600SJi-Ze Hong (Peter Hong) int phy_num = data[0]; 9460c9bd600SJi-Ze Hong (Peter Hong) size_t read_size = 0; 9470c9bd600SJi-Ze Hong (Peter Hong) size_t i; 9480c9bd600SJi-Ze Hong (Peter Hong) char tty_flag; 9490c9bd600SJi-Ze Hong (Peter Hong) int status; 9500c9bd600SJi-Ze Hong (Peter Hong) u8 lsr; 9510c9bd600SJi-Ze Hong (Peter Hong) 9520c9bd600SJi-Ze Hong (Peter Hong) /* 9530c9bd600SJi-Ze Hong (Peter Hong) * The block layout is 128 Bytes 9540c9bd600SJi-Ze Hong (Peter Hong) * index 0: port phy idx (e.g., 0,1,2,3), 9550c9bd600SJi-Ze Hong (Peter Hong) * index 1: It's could be 9560c9bd600SJi-Ze Hong (Peter Hong) * F81534_TOKEN_RECEIVE 9570c9bd600SJi-Ze Hong (Peter Hong) * F81534_TOKEN_TX_EMPTY 9580c9bd600SJi-Ze Hong (Peter Hong) * F81534_TOKEN_MSR_CHANGE 9590c9bd600SJi-Ze Hong (Peter Hong) * index 2: serial in size (data+lsr, must be even) 9600c9bd600SJi-Ze Hong (Peter Hong) * meaningful for F81534_TOKEN_RECEIVE only 9610c9bd600SJi-Ze Hong (Peter Hong) * index 3: current MSR with this device 9620c9bd600SJi-Ze Hong (Peter Hong) * index 4~127: serial in data block (data+lsr, must be even) 9630c9bd600SJi-Ze Hong (Peter Hong) */ 9640c9bd600SJi-Ze Hong (Peter Hong) switch (data[1]) { 9650c9bd600SJi-Ze Hong (Peter Hong) case F81534_TOKEN_TX_EMPTY: 9660c9bd600SJi-Ze Hong (Peter Hong) set_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 9670c9bd600SJi-Ze Hong (Peter Hong) 9680c9bd600SJi-Ze Hong (Peter Hong) /* Try to submit writer */ 9690c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_writer(port, GFP_ATOMIC); 9700c9bd600SJi-Ze Hong (Peter Hong) if (status) 9710c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed\n", __func__); 9720c9bd600SJi-Ze Hong (Peter Hong) return; 9730c9bd600SJi-Ze Hong (Peter Hong) 9740c9bd600SJi-Ze Hong (Peter Hong) case F81534_TOKEN_MSR_CHANGE: 9750c9bd600SJi-Ze Hong (Peter Hong) f81534_msr_changed(port, data[3]); 9760c9bd600SJi-Ze Hong (Peter Hong) return; 9770c9bd600SJi-Ze Hong (Peter Hong) 9780c9bd600SJi-Ze Hong (Peter Hong) case F81534_TOKEN_RECEIVE: 9790c9bd600SJi-Ze Hong (Peter Hong) read_size = data[2]; 9800c9bd600SJi-Ze Hong (Peter Hong) if (read_size > F81534_MAX_RX_SIZE) { 9810c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, 9820c9bd600SJi-Ze Hong (Peter Hong) "%s: phy: %d read_size: %zu larger than: %d\n", 9830c9bd600SJi-Ze Hong (Peter Hong) __func__, phy_num, read_size, 9840c9bd600SJi-Ze Hong (Peter Hong) F81534_MAX_RX_SIZE); 9850c9bd600SJi-Ze Hong (Peter Hong) return; 9860c9bd600SJi-Ze Hong (Peter Hong) } 9870c9bd600SJi-Ze Hong (Peter Hong) 9880c9bd600SJi-Ze Hong (Peter Hong) break; 9890c9bd600SJi-Ze Hong (Peter Hong) 9900c9bd600SJi-Ze Hong (Peter Hong) default: 9910c9bd600SJi-Ze Hong (Peter Hong) dev_warn(&port->dev, "%s: unknown token: %02x\n", __func__, 9920c9bd600SJi-Ze Hong (Peter Hong) data[1]); 9930c9bd600SJi-Ze Hong (Peter Hong) return; 9940c9bd600SJi-Ze Hong (Peter Hong) } 9950c9bd600SJi-Ze Hong (Peter Hong) 9960c9bd600SJi-Ze Hong (Peter Hong) for (i = 4; i < 4 + read_size; i += 2) { 9970c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_NORMAL; 9980c9bd600SJi-Ze Hong (Peter Hong) lsr = data[i + 1]; 9990c9bd600SJi-Ze Hong (Peter Hong) 10000c9bd600SJi-Ze Hong (Peter Hong) if (lsr & UART_LSR_BRK_ERROR_BITS) { 10010c9bd600SJi-Ze Hong (Peter Hong) if (lsr & UART_LSR_BI) { 10020c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_BREAK; 10030c9bd600SJi-Ze Hong (Peter Hong) port->icount.brk++; 10040c9bd600SJi-Ze Hong (Peter Hong) usb_serial_handle_break(port); 10050c9bd600SJi-Ze Hong (Peter Hong) } else if (lsr & UART_LSR_PE) { 10060c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_PARITY; 10070c9bd600SJi-Ze Hong (Peter Hong) port->icount.parity++; 10080c9bd600SJi-Ze Hong (Peter Hong) } else if (lsr & UART_LSR_FE) { 10090c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_FRAME; 10100c9bd600SJi-Ze Hong (Peter Hong) port->icount.frame++; 10110c9bd600SJi-Ze Hong (Peter Hong) } 10120c9bd600SJi-Ze Hong (Peter Hong) 10130c9bd600SJi-Ze Hong (Peter Hong) if (lsr & UART_LSR_OE) { 10140c9bd600SJi-Ze Hong (Peter Hong) port->icount.overrun++; 10150c9bd600SJi-Ze Hong (Peter Hong) tty_insert_flip_char(&port->port, 0, 10160c9bd600SJi-Ze Hong (Peter Hong) TTY_OVERRUN); 10170c9bd600SJi-Ze Hong (Peter Hong) } 10180c9bd600SJi-Ze Hong (Peter Hong) } 10190c9bd600SJi-Ze Hong (Peter Hong) 10200c9bd600SJi-Ze Hong (Peter Hong) if (port->port.console && port->sysrq) { 10210c9bd600SJi-Ze Hong (Peter Hong) if (usb_serial_handle_sysrq_char(port, data[i])) 10220c9bd600SJi-Ze Hong (Peter Hong) continue; 10230c9bd600SJi-Ze Hong (Peter Hong) } 10240c9bd600SJi-Ze Hong (Peter Hong) 10250c9bd600SJi-Ze Hong (Peter Hong) tty_insert_flip_char(&port->port, data[i], tty_flag); 10260c9bd600SJi-Ze Hong (Peter Hong) } 10270c9bd600SJi-Ze Hong (Peter Hong) 10280c9bd600SJi-Ze Hong (Peter Hong) tty_flip_buffer_push(&port->port); 10290c9bd600SJi-Ze Hong (Peter Hong) } 10300c9bd600SJi-Ze Hong (Peter Hong) 10310c9bd600SJi-Ze Hong (Peter Hong) static void f81534_process_read_urb(struct urb *urb) 10320c9bd600SJi-Ze Hong (Peter Hong) { 10330c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv; 10340c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port; 10350c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial *serial; 10360c9bd600SJi-Ze Hong (Peter Hong) u8 *buf; 10370c9bd600SJi-Ze Hong (Peter Hong) int phy_port_num; 10380c9bd600SJi-Ze Hong (Peter Hong) int tty_port_num; 10390c9bd600SJi-Ze Hong (Peter Hong) size_t i; 10400c9bd600SJi-Ze Hong (Peter Hong) 10410c9bd600SJi-Ze Hong (Peter Hong) if (!urb->actual_length || 10420c9bd600SJi-Ze Hong (Peter Hong) urb->actual_length % F81534_RECEIVE_BLOCK_SIZE) { 10430c9bd600SJi-Ze Hong (Peter Hong) return; 10440c9bd600SJi-Ze Hong (Peter Hong) } 10450c9bd600SJi-Ze Hong (Peter Hong) 10460c9bd600SJi-Ze Hong (Peter Hong) port = urb->context; 10470c9bd600SJi-Ze Hong (Peter Hong) serial = port->serial; 10480c9bd600SJi-Ze Hong (Peter Hong) buf = urb->transfer_buffer; 10490c9bd600SJi-Ze Hong (Peter Hong) serial_priv = usb_get_serial_data(serial); 10500c9bd600SJi-Ze Hong (Peter Hong) 10510c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < urb->actual_length; i += F81534_RECEIVE_BLOCK_SIZE) { 10520c9bd600SJi-Ze Hong (Peter Hong) phy_port_num = buf[i]; 10530c9bd600SJi-Ze Hong (Peter Hong) if (phy_port_num >= F81534_NUM_PORT) { 10540c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, 10550c9bd600SJi-Ze Hong (Peter Hong) "%s: phy_port_num: %d larger than: %d\n", 10560c9bd600SJi-Ze Hong (Peter Hong) __func__, phy_port_num, F81534_NUM_PORT); 10570c9bd600SJi-Ze Hong (Peter Hong) continue; 10580c9bd600SJi-Ze Hong (Peter Hong) } 10590c9bd600SJi-Ze Hong (Peter Hong) 10600c9bd600SJi-Ze Hong (Peter Hong) tty_port_num = serial_priv->tty_idx[phy_port_num]; 10610c9bd600SJi-Ze Hong (Peter Hong) port = serial->port[tty_port_num]; 10620c9bd600SJi-Ze Hong (Peter Hong) 10630c9bd600SJi-Ze Hong (Peter Hong) if (tty_port_initialized(&port->port)) 10640c9bd600SJi-Ze Hong (Peter Hong) f81534_process_per_serial_block(port, &buf[i]); 10650c9bd600SJi-Ze Hong (Peter Hong) } 10660c9bd600SJi-Ze Hong (Peter Hong) } 10670c9bd600SJi-Ze Hong (Peter Hong) 10680c9bd600SJi-Ze Hong (Peter Hong) static void f81534_write_usb_callback(struct urb *urb) 10690c9bd600SJi-Ze Hong (Peter Hong) { 10700c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = urb->context; 10710c9bd600SJi-Ze Hong (Peter Hong) 10720c9bd600SJi-Ze Hong (Peter Hong) switch (urb->status) { 10730c9bd600SJi-Ze Hong (Peter Hong) case 0: 10740c9bd600SJi-Ze Hong (Peter Hong) break; 10750c9bd600SJi-Ze Hong (Peter Hong) case -ENOENT: 10760c9bd600SJi-Ze Hong (Peter Hong) case -ECONNRESET: 10770c9bd600SJi-Ze Hong (Peter Hong) case -ESHUTDOWN: 10780c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s - urb stopped: %d\n", 10790c9bd600SJi-Ze Hong (Peter Hong) __func__, urb->status); 10800c9bd600SJi-Ze Hong (Peter Hong) return; 10810c9bd600SJi-Ze Hong (Peter Hong) case -EPIPE: 10820c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s - urb stopped: %d\n", 10830c9bd600SJi-Ze Hong (Peter Hong) __func__, urb->status); 10840c9bd600SJi-Ze Hong (Peter Hong) return; 10850c9bd600SJi-Ze Hong (Peter Hong) default: 10860c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s - nonzero urb status: %d\n", 10870c9bd600SJi-Ze Hong (Peter Hong) __func__, urb->status); 10880c9bd600SJi-Ze Hong (Peter Hong) break; 10890c9bd600SJi-Ze Hong (Peter Hong) } 10900c9bd600SJi-Ze Hong (Peter Hong) } 10910c9bd600SJi-Ze Hong (Peter Hong) 10920c9bd600SJi-Ze Hong (Peter Hong) static int f81534_attach(struct usb_serial *serial) 10930c9bd600SJi-Ze Hong (Peter Hong) { 10940c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv; 10950c9bd600SJi-Ze Hong (Peter Hong) int index = 0; 10960c9bd600SJi-Ze Hong (Peter Hong) int status; 10970c9bd600SJi-Ze Hong (Peter Hong) int i; 10980c9bd600SJi-Ze Hong (Peter Hong) 10990c9bd600SJi-Ze Hong (Peter Hong) serial_priv = devm_kzalloc(&serial->interface->dev, 11000c9bd600SJi-Ze Hong (Peter Hong) sizeof(*serial_priv), GFP_KERNEL); 11010c9bd600SJi-Ze Hong (Peter Hong) if (!serial_priv) 11020c9bd600SJi-Ze Hong (Peter Hong) return -ENOMEM; 11030c9bd600SJi-Ze Hong (Peter Hong) 11040c9bd600SJi-Ze Hong (Peter Hong) usb_set_serial_data(serial, serial_priv); 11050c9bd600SJi-Ze Hong (Peter Hong) 11060c9bd600SJi-Ze Hong (Peter Hong) mutex_init(&serial_priv->urb_mutex); 11070c9bd600SJi-Ze Hong (Peter Hong) 11080c9bd600SJi-Ze Hong (Peter Hong) /* Check had custom setting */ 11090c9bd600SJi-Ze Hong (Peter Hong) status = f81534_find_config_idx(serial, &serial_priv->setting_idx); 11100c9bd600SJi-Ze Hong (Peter Hong) if (status) { 11110c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, "%s: find idx failed: %d\n", 11120c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 11130c9bd600SJi-Ze Hong (Peter Hong) return status; 11140c9bd600SJi-Ze Hong (Peter Hong) } 11150c9bd600SJi-Ze Hong (Peter Hong) 11160c9bd600SJi-Ze Hong (Peter Hong) /* 11170c9bd600SJi-Ze Hong (Peter Hong) * We'll read custom data only when data available, otherwise we'll 11180c9bd600SJi-Ze Hong (Peter Hong) * read default value instead. 11190c9bd600SJi-Ze Hong (Peter Hong) */ 11200c9bd600SJi-Ze Hong (Peter Hong) if (serial_priv->setting_idx == F81534_CUSTOM_NO_CUSTOM_DATA) { 11210c9bd600SJi-Ze Hong (Peter Hong) /* 11220c9bd600SJi-Ze Hong (Peter Hong) * The default configuration layout: 11230c9bd600SJi-Ze Hong (Peter Hong) * byte 0/1/2/3: uart setting 11240c9bd600SJi-Ze Hong (Peter Hong) */ 11250c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, 11260c9bd600SJi-Ze Hong (Peter Hong) F81534_DEF_CONF_ADDRESS_START, 11270c9bd600SJi-Ze Hong (Peter Hong) F81534_DEF_CONF_SIZE, 11280c9bd600SJi-Ze Hong (Peter Hong) serial_priv->conf_data); 11290c9bd600SJi-Ze Hong (Peter Hong) if (status) { 11300c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 11310c9bd600SJi-Ze Hong (Peter Hong) "%s: read reserve data failed: %d\n", 11320c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 11330c9bd600SJi-Ze Hong (Peter Hong) return status; 11340c9bd600SJi-Ze Hong (Peter Hong) } 11350c9bd600SJi-Ze Hong (Peter Hong) } else { 11360c9bd600SJi-Ze Hong (Peter Hong) /* Only read 8 bytes for mode & GPIO */ 11370c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, 11380c9bd600SJi-Ze Hong (Peter Hong) F81534_CUSTOM_ADDRESS_START + 11390c9bd600SJi-Ze Hong (Peter Hong) F81534_CONF_OFFSET, 11400c9bd600SJi-Ze Hong (Peter Hong) sizeof(serial_priv->conf_data), 11410c9bd600SJi-Ze Hong (Peter Hong) serial_priv->conf_data); 11420c9bd600SJi-Ze Hong (Peter Hong) if (status) { 11430c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 11440c9bd600SJi-Ze Hong (Peter Hong) "%s: idx: %d get data failed: %d\n", 11450c9bd600SJi-Ze Hong (Peter Hong) __func__, serial_priv->setting_idx, 11460c9bd600SJi-Ze Hong (Peter Hong) status); 11470c9bd600SJi-Ze Hong (Peter Hong) return status; 11480c9bd600SJi-Ze Hong (Peter Hong) } 11490c9bd600SJi-Ze Hong (Peter Hong) } 11500c9bd600SJi-Ze Hong (Peter Hong) 11510c9bd600SJi-Ze Hong (Peter Hong) /* Assign phy-to-logic mapping */ 11520c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 11530c9bd600SJi-Ze Hong (Peter Hong) if (serial_priv->conf_data[i] & F81534_PORT_UNAVAILABLE) 11540c9bd600SJi-Ze Hong (Peter Hong) continue; 11550c9bd600SJi-Ze Hong (Peter Hong) 11560c9bd600SJi-Ze Hong (Peter Hong) serial_priv->tty_idx[i] = index++; 11570c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&serial->interface->dev, 11580c9bd600SJi-Ze Hong (Peter Hong) "%s: phy_num: %d, tty_idx: %d\n", __func__, i, 11590c9bd600SJi-Ze Hong (Peter Hong) serial_priv->tty_idx[i]); 11600c9bd600SJi-Ze Hong (Peter Hong) } 11610c9bd600SJi-Ze Hong (Peter Hong) 11620c9bd600SJi-Ze Hong (Peter Hong) return 0; 11630c9bd600SJi-Ze Hong (Peter Hong) } 11640c9bd600SJi-Ze Hong (Peter Hong) 11650c9bd600SJi-Ze Hong (Peter Hong) static int f81534_port_probe(struct usb_serial_port *port) 11660c9bd600SJi-Ze Hong (Peter Hong) { 11670c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv; 116842715763SGeert Uytterhoeven int ret; 11690c9bd600SJi-Ze Hong (Peter Hong) 11700c9bd600SJi-Ze Hong (Peter Hong) port_priv = devm_kzalloc(&port->dev, sizeof(*port_priv), GFP_KERNEL); 11710c9bd600SJi-Ze Hong (Peter Hong) if (!port_priv) 11720c9bd600SJi-Ze Hong (Peter Hong) return -ENOMEM; 11730c9bd600SJi-Ze Hong (Peter Hong) 11740c9bd600SJi-Ze Hong (Peter Hong) spin_lock_init(&port_priv->msr_lock); 11750c9bd600SJi-Ze Hong (Peter Hong) mutex_init(&port_priv->mcr_mutex); 11760c9bd600SJi-Ze Hong (Peter Hong) 11770c9bd600SJi-Ze Hong (Peter Hong) /* Assign logic-to-phy mapping */ 117842715763SGeert Uytterhoeven ret = f81534_logic_to_phy_port(port->serial, port); 117942715763SGeert Uytterhoeven if (ret < 0) 118042715763SGeert Uytterhoeven return ret; 11810c9bd600SJi-Ze Hong (Peter Hong) 118242715763SGeert Uytterhoeven port_priv->phy_num = ret; 11830c9bd600SJi-Ze Hong (Peter Hong) usb_set_serial_port_data(port, port_priv); 11840c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: port_number: %d, phy_num: %d\n", __func__, 11850c9bd600SJi-Ze Hong (Peter Hong) port->port_number, port_priv->phy_num); 11860c9bd600SJi-Ze Hong (Peter Hong) 11870c9bd600SJi-Ze Hong (Peter Hong) return 0; 11880c9bd600SJi-Ze Hong (Peter Hong) } 11890c9bd600SJi-Ze Hong (Peter Hong) 11900c9bd600SJi-Ze Hong (Peter Hong) static int f81534_tiocmget(struct tty_struct *tty) 11910c9bd600SJi-Ze Hong (Peter Hong) { 11920c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = tty->driver_data; 11930c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 11940c9bd600SJi-Ze Hong (Peter Hong) int status; 11950c9bd600SJi-Ze Hong (Peter Hong) int r; 11960c9bd600SJi-Ze Hong (Peter Hong) u8 msr; 11970c9bd600SJi-Ze Hong (Peter Hong) u8 mcr; 11980c9bd600SJi-Ze Hong (Peter Hong) 11990c9bd600SJi-Ze Hong (Peter Hong) /* Read current MSR from device */ 12000c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_port_register(port, F81534_MODEM_STATUS_REG, &msr); 12010c9bd600SJi-Ze Hong (Peter Hong) if (status) 12020c9bd600SJi-Ze Hong (Peter Hong) return status; 12030c9bd600SJi-Ze Hong (Peter Hong) 12040c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&port_priv->mcr_mutex); 12050c9bd600SJi-Ze Hong (Peter Hong) mcr = port_priv->shadow_mcr; 12060c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->mcr_mutex); 12070c9bd600SJi-Ze Hong (Peter Hong) 12080c9bd600SJi-Ze Hong (Peter Hong) r = (mcr & UART_MCR_DTR ? TIOCM_DTR : 0) | 12090c9bd600SJi-Ze Hong (Peter Hong) (mcr & UART_MCR_RTS ? TIOCM_RTS : 0) | 12100c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_CTS ? TIOCM_CTS : 0) | 12110c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_DCD ? TIOCM_CAR : 0) | 12120c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_RI ? TIOCM_RI : 0) | 12130c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_DSR ? TIOCM_DSR : 0); 12140c9bd600SJi-Ze Hong (Peter Hong) 12150c9bd600SJi-Ze Hong (Peter Hong) return r; 12160c9bd600SJi-Ze Hong (Peter Hong) } 12170c9bd600SJi-Ze Hong (Peter Hong) 12180c9bd600SJi-Ze Hong (Peter Hong) static int f81534_tiocmset(struct tty_struct *tty, unsigned int set, 12190c9bd600SJi-Ze Hong (Peter Hong) unsigned int clear) 12200c9bd600SJi-Ze Hong (Peter Hong) { 12210c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = tty->driver_data; 12220c9bd600SJi-Ze Hong (Peter Hong) 12230c9bd600SJi-Ze Hong (Peter Hong) return f81534_update_mctrl(port, set, clear); 12240c9bd600SJi-Ze Hong (Peter Hong) } 12250c9bd600SJi-Ze Hong (Peter Hong) 12260c9bd600SJi-Ze Hong (Peter Hong) static void f81534_dtr_rts(struct usb_serial_port *port, int on) 12270c9bd600SJi-Ze Hong (Peter Hong) { 12280c9bd600SJi-Ze Hong (Peter Hong) if (on) 12290c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0); 12300c9bd600SJi-Ze Hong (Peter Hong) else 12310c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS); 12320c9bd600SJi-Ze Hong (Peter Hong) } 12330c9bd600SJi-Ze Hong (Peter Hong) 12340c9bd600SJi-Ze Hong (Peter Hong) static int f81534_write(struct tty_struct *tty, struct usb_serial_port *port, 12350c9bd600SJi-Ze Hong (Peter Hong) const u8 *buf, int count) 12360c9bd600SJi-Ze Hong (Peter Hong) { 12370c9bd600SJi-Ze Hong (Peter Hong) int bytes_out, status; 12380c9bd600SJi-Ze Hong (Peter Hong) 12390c9bd600SJi-Ze Hong (Peter Hong) if (!count) 12400c9bd600SJi-Ze Hong (Peter Hong) return 0; 12410c9bd600SJi-Ze Hong (Peter Hong) 12420c9bd600SJi-Ze Hong (Peter Hong) bytes_out = kfifo_in_locked(&port->write_fifo, buf, count, 12430c9bd600SJi-Ze Hong (Peter Hong) &port->lock); 12440c9bd600SJi-Ze Hong (Peter Hong) 12450c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_writer(port, GFP_ATOMIC); 12460c9bd600SJi-Ze Hong (Peter Hong) if (status) { 12470c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed\n", __func__); 12480c9bd600SJi-Ze Hong (Peter Hong) return status; 12490c9bd600SJi-Ze Hong (Peter Hong) } 12500c9bd600SJi-Ze Hong (Peter Hong) 12510c9bd600SJi-Ze Hong (Peter Hong) return bytes_out; 12520c9bd600SJi-Ze Hong (Peter Hong) } 12530c9bd600SJi-Ze Hong (Peter Hong) 12540c9bd600SJi-Ze Hong (Peter Hong) static bool f81534_tx_empty(struct usb_serial_port *port) 12550c9bd600SJi-Ze Hong (Peter Hong) { 12560c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 12570c9bd600SJi-Ze Hong (Peter Hong) 12580c9bd600SJi-Ze Hong (Peter Hong) return test_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 12590c9bd600SJi-Ze Hong (Peter Hong) } 12600c9bd600SJi-Ze Hong (Peter Hong) 12610c9bd600SJi-Ze Hong (Peter Hong) static int f81534_resume(struct usb_serial *serial) 12620c9bd600SJi-Ze Hong (Peter Hong) { 12630c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 12640c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(serial); 12650c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port; 12660c9bd600SJi-Ze Hong (Peter Hong) int error = 0; 12670c9bd600SJi-Ze Hong (Peter Hong) int status; 12680c9bd600SJi-Ze Hong (Peter Hong) size_t i; 12690c9bd600SJi-Ze Hong (Peter Hong) 12700c9bd600SJi-Ze Hong (Peter Hong) /* 12710c9bd600SJi-Ze Hong (Peter Hong) * We'll register port 0 bulkin when port had opened, It'll take all 12720c9bd600SJi-Ze Hong (Peter Hong) * port received data, MSR register change and TX_EMPTY information. 12730c9bd600SJi-Ze Hong (Peter Hong) */ 12740c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&serial_priv->urb_mutex); 12750c9bd600SJi-Ze Hong (Peter Hong) 12760c9bd600SJi-Ze Hong (Peter Hong) if (serial_priv->opened_port) { 12770c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_read_urb(serial, GFP_NOIO); 12780c9bd600SJi-Ze Hong (Peter Hong) if (status) { 12790c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 12800c9bd600SJi-Ze Hong (Peter Hong) return status; 12810c9bd600SJi-Ze Hong (Peter Hong) } 12820c9bd600SJi-Ze Hong (Peter Hong) } 12830c9bd600SJi-Ze Hong (Peter Hong) 12840c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 12850c9bd600SJi-Ze Hong (Peter Hong) 12860c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < serial->num_ports; i++) { 12870c9bd600SJi-Ze Hong (Peter Hong) port = serial->port[i]; 12880c9bd600SJi-Ze Hong (Peter Hong) if (!tty_port_initialized(&port->port)) 12890c9bd600SJi-Ze Hong (Peter Hong) continue; 12900c9bd600SJi-Ze Hong (Peter Hong) 12910c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_writer(port, GFP_NOIO); 12920c9bd600SJi-Ze Hong (Peter Hong) if (status) { 12930c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed\n", __func__); 12940c9bd600SJi-Ze Hong (Peter Hong) ++error; 12950c9bd600SJi-Ze Hong (Peter Hong) } 12960c9bd600SJi-Ze Hong (Peter Hong) } 12970c9bd600SJi-Ze Hong (Peter Hong) 12980c9bd600SJi-Ze Hong (Peter Hong) if (error) 12990c9bd600SJi-Ze Hong (Peter Hong) return -EIO; 13000c9bd600SJi-Ze Hong (Peter Hong) 13010c9bd600SJi-Ze Hong (Peter Hong) return 0; 13020c9bd600SJi-Ze Hong (Peter Hong) } 13030c9bd600SJi-Ze Hong (Peter Hong) 13040c9bd600SJi-Ze Hong (Peter Hong) static struct usb_serial_driver f81534_device = { 13050c9bd600SJi-Ze Hong (Peter Hong) .driver = { 13060c9bd600SJi-Ze Hong (Peter Hong) .owner = THIS_MODULE, 13070c9bd600SJi-Ze Hong (Peter Hong) .name = "f81534", 13080c9bd600SJi-Ze Hong (Peter Hong) }, 13090c9bd600SJi-Ze Hong (Peter Hong) .description = DRIVER_DESC, 13100c9bd600SJi-Ze Hong (Peter Hong) .id_table = f81534_id_table, 1311cac4cea5SJohan Hovold .num_bulk_in = 1, 1312cac4cea5SJohan Hovold .num_bulk_out = 1, 13130c9bd600SJi-Ze Hong (Peter Hong) .open = f81534_open, 13140c9bd600SJi-Ze Hong (Peter Hong) .close = f81534_close, 13150c9bd600SJi-Ze Hong (Peter Hong) .write = f81534_write, 13160c9bd600SJi-Ze Hong (Peter Hong) .tx_empty = f81534_tx_empty, 13170c9bd600SJi-Ze Hong (Peter Hong) .calc_num_ports = f81534_calc_num_ports, 13180c9bd600SJi-Ze Hong (Peter Hong) .attach = f81534_attach, 13190c9bd600SJi-Ze Hong (Peter Hong) .port_probe = f81534_port_probe, 13200c9bd600SJi-Ze Hong (Peter Hong) .dtr_rts = f81534_dtr_rts, 13210c9bd600SJi-Ze Hong (Peter Hong) .process_read_urb = f81534_process_read_urb, 13220c9bd600SJi-Ze Hong (Peter Hong) .ioctl = f81534_ioctl, 13230c9bd600SJi-Ze Hong (Peter Hong) .tiocmget = f81534_tiocmget, 13240c9bd600SJi-Ze Hong (Peter Hong) .tiocmset = f81534_tiocmset, 13250c9bd600SJi-Ze Hong (Peter Hong) .write_bulk_callback = f81534_write_usb_callback, 13260c9bd600SJi-Ze Hong (Peter Hong) .set_termios = f81534_set_termios, 13270c9bd600SJi-Ze Hong (Peter Hong) .resume = f81534_resume, 13280c9bd600SJi-Ze Hong (Peter Hong) }; 13290c9bd600SJi-Ze Hong (Peter Hong) 13300c9bd600SJi-Ze Hong (Peter Hong) static struct usb_serial_driver *const serial_drivers[] = { 13310c9bd600SJi-Ze Hong (Peter Hong) &f81534_device, NULL 13320c9bd600SJi-Ze Hong (Peter Hong) }; 13330c9bd600SJi-Ze Hong (Peter Hong) 13340c9bd600SJi-Ze Hong (Peter Hong) module_usb_serial_driver(serial_drivers, f81534_id_table); 13350c9bd600SJi-Ze Hong (Peter Hong) 13360c9bd600SJi-Ze Hong (Peter Hong) MODULE_DEVICE_TABLE(usb, f81534_id_table); 13370c9bd600SJi-Ze Hong (Peter Hong) MODULE_DESCRIPTION(DRIVER_DESC); 13380c9bd600SJi-Ze Hong (Peter Hong) MODULE_AUTHOR("Peter Hong <Peter_Hong@fintek.com.tw>"); 13390c9bd600SJi-Ze Hong (Peter Hong) MODULE_AUTHOR("Tom Tsai <Tom_Tsai@fintek.com.tw>"); 13400c9bd600SJi-Ze Hong (Peter Hong) MODULE_LICENSE("GPL"); 1341