15fd54aceSGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0+ 20c9bd600SJi-Ze Hong (Peter Hong) /* 30c9bd600SJi-Ze Hong (Peter Hong) * F81532/F81534 USB to Serial Ports Bridge 40c9bd600SJi-Ze Hong (Peter Hong) * 50c9bd600SJi-Ze Hong (Peter Hong) * F81532 => 2 Serial Ports 60c9bd600SJi-Ze Hong (Peter Hong) * F81534 => 4 Serial Ports 70c9bd600SJi-Ze Hong (Peter Hong) * 80c9bd600SJi-Ze Hong (Peter Hong) * Copyright (C) 2016 Feature Integration Technology Inc., (Fintek) 90c9bd600SJi-Ze Hong (Peter Hong) * Copyright (C) 2016 Tom Tsai (Tom_Tsai@fintek.com.tw) 100c9bd600SJi-Ze Hong (Peter Hong) * Copyright (C) 2016 Peter Hong (Peter_Hong@fintek.com.tw) 110c9bd600SJi-Ze Hong (Peter Hong) * 120c9bd600SJi-Ze Hong (Peter Hong) * The F81532/F81534 had 1 control endpoint for setting, 1 endpoint bulk-out 130c9bd600SJi-Ze Hong (Peter Hong) * for all serial port TX and 1 endpoint bulk-in for all serial port read in 140c9bd600SJi-Ze Hong (Peter Hong) * (Read Data/MSR/LSR). 150c9bd600SJi-Ze Hong (Peter Hong) * 160c9bd600SJi-Ze Hong (Peter Hong) * Write URB is fixed with 512bytes, per serial port used 128Bytes. 170c9bd600SJi-Ze Hong (Peter Hong) * It can be described by f81534_prepare_write_buffer() 180c9bd600SJi-Ze Hong (Peter Hong) * 190c9bd600SJi-Ze Hong (Peter Hong) * Read URB is 512Bytes max, per serial port used 128Bytes. 200c9bd600SJi-Ze Hong (Peter Hong) * It can be described by f81534_process_read_urb() and maybe received with 210c9bd600SJi-Ze Hong (Peter Hong) * 128x1,2,3,4 bytes. 220c9bd600SJi-Ze Hong (Peter Hong) * 230c9bd600SJi-Ze Hong (Peter Hong) */ 240c9bd600SJi-Ze Hong (Peter Hong) #include <linux/slab.h> 250c9bd600SJi-Ze Hong (Peter Hong) #include <linux/tty.h> 260c9bd600SJi-Ze Hong (Peter Hong) #include <linux/tty_flip.h> 270c9bd600SJi-Ze Hong (Peter Hong) #include <linux/usb.h> 280c9bd600SJi-Ze Hong (Peter Hong) #include <linux/usb/serial.h> 290c9bd600SJi-Ze Hong (Peter Hong) #include <linux/serial_reg.h> 300c9bd600SJi-Ze Hong (Peter Hong) #include <linux/module.h> 310c9bd600SJi-Ze Hong (Peter Hong) #include <linux/uaccess.h> 320c9bd600SJi-Ze Hong (Peter Hong) 330c9bd600SJi-Ze Hong (Peter Hong) /* Serial Port register Address */ 340c9bd600SJi-Ze Hong (Peter Hong) #define F81534_UART_BASE_ADDRESS 0x1200 350c9bd600SJi-Ze Hong (Peter Hong) #define F81534_UART_OFFSET 0x10 360c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DIVISOR_LSB_REG (0x00 + F81534_UART_BASE_ADDRESS) 370c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DIVISOR_MSB_REG (0x01 + F81534_UART_BASE_ADDRESS) 38dea744baSJi-Ze Hong (Peter Hong) #define F81534_INTERRUPT_ENABLE_REG (0x01 + F81534_UART_BASE_ADDRESS) 390c9bd600SJi-Ze Hong (Peter Hong) #define F81534_FIFO_CONTROL_REG (0x02 + F81534_UART_BASE_ADDRESS) 400c9bd600SJi-Ze Hong (Peter Hong) #define F81534_LINE_CONTROL_REG (0x03 + F81534_UART_BASE_ADDRESS) 410c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MODEM_CONTROL_REG (0x04 + F81534_UART_BASE_ADDRESS) 42dea744baSJi-Ze Hong (Peter Hong) #define F81534_LINE_STATUS_REG (0x05 + F81534_UART_BASE_ADDRESS) 430c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MODEM_STATUS_REG (0x06 + F81534_UART_BASE_ADDRESS) 443aacac02SJi-Ze Hong (Peter Hong) #define F81534_CLOCK_REG (0x08 + F81534_UART_BASE_ADDRESS) 450c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CONFIG1_REG (0x09 + F81534_UART_BASE_ADDRESS) 460c9bd600SJi-Ze Hong (Peter Hong) 470c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DEF_CONF_ADDRESS_START 0x3000 48ab60075fSJi-Ze Hong (Peter Hong) #define F81534_DEF_CONF_SIZE 12 490c9bd600SJi-Ze Hong (Peter Hong) 500c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_ADDRESS_START 0x2f00 510c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_DATA_SIZE 0x10 520c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_NO_CUSTOM_DATA 0xff 530c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CUSTOM_VALID_TOKEN 0xf0 540c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CONF_OFFSET 1 55ab60075fSJi-Ze Hong (Peter Hong) #define F81534_CONF_INIT_GPIO_OFFSET 4 56ab60075fSJi-Ze Hong (Peter Hong) #define F81534_CONF_WORK_GPIO_OFFSET 8 57ab60075fSJi-Ze Hong (Peter Hong) #define F81534_CONF_GPIO_SHUTDOWN 7 58ab60075fSJi-Ze Hong (Peter Hong) #define F81534_CONF_GPIO_RS232 1 590c9bd600SJi-Ze Hong (Peter Hong) 600c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_DATA_BLOCK 64 610c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_BUS_RETRY 20 620c9bd600SJi-Ze Hong (Peter Hong) 630c9bd600SJi-Ze Hong (Peter Hong) /* Default URB timeout for USB operations */ 640c9bd600SJi-Ze Hong (Peter Hong) #define F81534_USB_MAX_RETRY 10 653aacac02SJi-Ze Hong (Peter Hong) #define F81534_USB_TIMEOUT 2000 660c9bd600SJi-Ze Hong (Peter Hong) #define F81534_SET_GET_REGISTER 0xA0 670c9bd600SJi-Ze Hong (Peter Hong) 680c9bd600SJi-Ze Hong (Peter Hong) #define F81534_NUM_PORT 4 690c9bd600SJi-Ze Hong (Peter Hong) #define F81534_UNUSED_PORT 0xff 700c9bd600SJi-Ze Hong (Peter Hong) #define F81534_WRITE_BUFFER_SIZE 512 710c9bd600SJi-Ze Hong (Peter Hong) 720c9bd600SJi-Ze Hong (Peter Hong) #define DRIVER_DESC "Fintek F81532/F81534" 730c9bd600SJi-Ze Hong (Peter Hong) #define FINTEK_VENDOR_ID_1 0x1934 740c9bd600SJi-Ze Hong (Peter Hong) #define FINTEK_VENDOR_ID_2 0x2C42 750c9bd600SJi-Ze Hong (Peter Hong) #define FINTEK_DEVICE_ID 0x1202 760c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_TX_SIZE 124 770c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_RX_SIZE 124 780c9bd600SJi-Ze Hong (Peter Hong) #define F81534_RECEIVE_BLOCK_SIZE 128 790c9bd600SJi-Ze Hong (Peter Hong) #define F81534_MAX_RECEIVE_BLOCK_SIZE 512 800c9bd600SJi-Ze Hong (Peter Hong) 810c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_RECEIVE 0x01 820c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_WRITE 0x02 830c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_TX_EMPTY 0x03 840c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TOKEN_MSR_CHANGE 0x04 850c9bd600SJi-Ze Hong (Peter Hong) 860c9bd600SJi-Ze Hong (Peter Hong) /* 870c9bd600SJi-Ze Hong (Peter Hong) * We used interal SPI bus to access FLASH section. We must wait the SPI bus to 880c9bd600SJi-Ze Hong (Peter Hong) * idle if we performed any command. 890c9bd600SJi-Ze Hong (Peter Hong) * 900c9bd600SJi-Ze Hong (Peter Hong) * SPI Bus status register: F81534_BUS_REG_STATUS 910c9bd600SJi-Ze Hong (Peter Hong) * Bit 0/1 : BUSY 920c9bd600SJi-Ze Hong (Peter Hong) * Bit 2 : IDLE 930c9bd600SJi-Ze Hong (Peter Hong) */ 940c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_BUSY (BIT(0) | BIT(1)) 950c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_IDLE BIT(2) 960c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_READ_DATA 0x1004 970c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_REG_STATUS 0x1003 980c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_REG_START 0x1002 990c9bd600SJi-Ze Hong (Peter Hong) #define F81534_BUS_REG_END 0x1001 1000c9bd600SJi-Ze Hong (Peter Hong) 1010c9bd600SJi-Ze Hong (Peter Hong) #define F81534_CMD_READ 0x03 1020c9bd600SJi-Ze Hong (Peter Hong) 1030c9bd600SJi-Ze Hong (Peter Hong) #define F81534_DEFAULT_BAUD_RATE 9600 1040c9bd600SJi-Ze Hong (Peter Hong) 105ee0309b4SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_RS232 0 106ee0309b4SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_RS485 BIT(0) 107ee0309b4SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_RS485_INVERT (BIT(0) | BIT(1)) 108ee0309b4SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_MODE_MASK GENMASK(1, 0) 1090c9bd600SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_DISABLE_PORT BIT(3) 1100c9bd600SJi-Ze Hong (Peter Hong) #define F81534_PORT_CONF_NOT_EXIST_PORT BIT(7) 1110c9bd600SJi-Ze Hong (Peter Hong) #define F81534_PORT_UNAVAILABLE \ 1120c9bd600SJi-Ze Hong (Peter Hong) (F81534_PORT_CONF_DISABLE_PORT | F81534_PORT_CONF_NOT_EXIST_PORT) 1130c9bd600SJi-Ze Hong (Peter Hong) 114ee0309b4SJi-Ze Hong (Peter Hong) 1150c9bd600SJi-Ze Hong (Peter Hong) #define F81534_1X_RXTRIGGER 0xc3 1160c9bd600SJi-Ze Hong (Peter Hong) #define F81534_8X_RXTRIGGER 0xcf 1170c9bd600SJi-Ze Hong (Peter Hong) 1183aacac02SJi-Ze Hong (Peter Hong) /* 1193aacac02SJi-Ze Hong (Peter Hong) * F81532/534 Clock registers (offset +08h) 1203aacac02SJi-Ze Hong (Peter Hong) * 1213aacac02SJi-Ze Hong (Peter Hong) * Bit0: UART Enable (always on) 1223aacac02SJi-Ze Hong (Peter Hong) * Bit2-1: Clock source selector 1233aacac02SJi-Ze Hong (Peter Hong) * 00: 1.846MHz. 1243aacac02SJi-Ze Hong (Peter Hong) * 01: 18.46MHz. 1253aacac02SJi-Ze Hong (Peter Hong) * 10: 24MHz. 1263aacac02SJi-Ze Hong (Peter Hong) * 11: 14.77MHz. 127ee0309b4SJi-Ze Hong (Peter Hong) * Bit4: Auto direction(RTS) control (RTS pin Low when TX) 128ee0309b4SJi-Ze Hong (Peter Hong) * Bit5: Invert direction(RTS) when Bit4 enabled (RTS pin high when TX) 1293aacac02SJi-Ze Hong (Peter Hong) */ 1303aacac02SJi-Ze Hong (Peter Hong) 1313aacac02SJi-Ze Hong (Peter Hong) #define F81534_UART_EN BIT(0) 1323aacac02SJi-Ze Hong (Peter Hong) #define F81534_CLK_1_846_MHZ 0 1333aacac02SJi-Ze Hong (Peter Hong) #define F81534_CLK_18_46_MHZ BIT(1) 1343aacac02SJi-Ze Hong (Peter Hong) #define F81534_CLK_24_MHZ BIT(2) 1353aacac02SJi-Ze Hong (Peter Hong) #define F81534_CLK_14_77_MHZ (BIT(1) | BIT(2)) 1363aacac02SJi-Ze Hong (Peter Hong) #define F81534_CLK_MASK GENMASK(2, 1) 137d1c48227SJi-Ze Hong (Peter Hong) #define F81534_CLK_TX_DELAY_1BIT BIT(3) 138ee0309b4SJi-Ze Hong (Peter Hong) #define F81534_CLK_RS485_MODE BIT(4) 139ee0309b4SJi-Ze Hong (Peter Hong) #define F81534_CLK_RS485_INVERT BIT(5) 1403aacac02SJi-Ze Hong (Peter Hong) 1410c9bd600SJi-Ze Hong (Peter Hong) static const struct usb_device_id f81534_id_table[] = { 1420c9bd600SJi-Ze Hong (Peter Hong) { USB_DEVICE(FINTEK_VENDOR_ID_1, FINTEK_DEVICE_ID) }, 1430c9bd600SJi-Ze Hong (Peter Hong) { USB_DEVICE(FINTEK_VENDOR_ID_2, FINTEK_DEVICE_ID) }, 1440c9bd600SJi-Ze Hong (Peter Hong) {} /* Terminating entry */ 1450c9bd600SJi-Ze Hong (Peter Hong) }; 1460c9bd600SJi-Ze Hong (Peter Hong) 1470c9bd600SJi-Ze Hong (Peter Hong) #define F81534_TX_EMPTY_BIT 0 1480c9bd600SJi-Ze Hong (Peter Hong) 1490c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private { 1500c9bd600SJi-Ze Hong (Peter Hong) u8 conf_data[F81534_DEF_CONF_SIZE]; 1510c9bd600SJi-Ze Hong (Peter Hong) int tty_idx[F81534_NUM_PORT]; 1520c9bd600SJi-Ze Hong (Peter Hong) u8 setting_idx; 1530c9bd600SJi-Ze Hong (Peter Hong) int opened_port; 1540c9bd600SJi-Ze Hong (Peter Hong) struct mutex urb_mutex; 1550c9bd600SJi-Ze Hong (Peter Hong) }; 1560c9bd600SJi-Ze Hong (Peter Hong) 1570c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private { 1580c9bd600SJi-Ze Hong (Peter Hong) struct mutex mcr_mutex; 1597c36e6e1SJi-Ze Hong (Peter Hong) struct mutex lcr_mutex; 160dea744baSJi-Ze Hong (Peter Hong) struct work_struct lsr_work; 161dea744baSJi-Ze Hong (Peter Hong) struct usb_serial_port *port; 1620c9bd600SJi-Ze Hong (Peter Hong) unsigned long tx_empty; 1630c9bd600SJi-Ze Hong (Peter Hong) spinlock_t msr_lock; 1643aacac02SJi-Ze Hong (Peter Hong) u32 baud_base; 1650c9bd600SJi-Ze Hong (Peter Hong) u8 shadow_mcr; 1667c36e6e1SJi-Ze Hong (Peter Hong) u8 shadow_lcr; 1670c9bd600SJi-Ze Hong (Peter Hong) u8 shadow_msr; 1683aacac02SJi-Ze Hong (Peter Hong) u8 shadow_clk; 1690c9bd600SJi-Ze Hong (Peter Hong) u8 phy_num; 1700c9bd600SJi-Ze Hong (Peter Hong) }; 1710c9bd600SJi-Ze Hong (Peter Hong) 172138651e1SJi-Ze Hong (Peter Hong) struct f81534_pin_data { 173138651e1SJi-Ze Hong (Peter Hong) const u16 reg_addr; 174138651e1SJi-Ze Hong (Peter Hong) const u8 reg_mask; 175138651e1SJi-Ze Hong (Peter Hong) }; 176138651e1SJi-Ze Hong (Peter Hong) 177138651e1SJi-Ze Hong (Peter Hong) struct f81534_port_out_pin { 178138651e1SJi-Ze Hong (Peter Hong) struct f81534_pin_data pin[3]; 179138651e1SJi-Ze Hong (Peter Hong) }; 180138651e1SJi-Ze Hong (Peter Hong) 181138651e1SJi-Ze Hong (Peter Hong) /* Pin output value for M2/M1/M0(SD) */ 182138651e1SJi-Ze Hong (Peter Hong) static const struct f81534_port_out_pin f81534_port_out_pins[] = { 183138651e1SJi-Ze Hong (Peter Hong) { { { 0x2ae8, BIT(7) }, { 0x2a90, BIT(5) }, { 0x2a90, BIT(4) } } }, 184138651e1SJi-Ze Hong (Peter Hong) { { { 0x2ae8, BIT(6) }, { 0x2ae8, BIT(0) }, { 0x2ae8, BIT(3) } } }, 185138651e1SJi-Ze Hong (Peter Hong) { { { 0x2a90, BIT(0) }, { 0x2ae8, BIT(2) }, { 0x2a80, BIT(6) } } }, 186138651e1SJi-Ze Hong (Peter Hong) { { { 0x2a90, BIT(3) }, { 0x2a90, BIT(2) }, { 0x2a90, BIT(1) } } }, 187138651e1SJi-Ze Hong (Peter Hong) }; 188138651e1SJi-Ze Hong (Peter Hong) 1893aacac02SJi-Ze Hong (Peter Hong) static u32 const baudrate_table[] = { 115200, 921600, 1152000, 1500000 }; 1903aacac02SJi-Ze Hong (Peter Hong) static u8 const clock_table[] = { F81534_CLK_1_846_MHZ, F81534_CLK_14_77_MHZ, 1913aacac02SJi-Ze Hong (Peter Hong) F81534_CLK_18_46_MHZ, F81534_CLK_24_MHZ }; 1923aacac02SJi-Ze Hong (Peter Hong) 1930c9bd600SJi-Ze Hong (Peter Hong) static int f81534_logic_to_phy_port(struct usb_serial *serial, 1940c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port) 1950c9bd600SJi-Ze Hong (Peter Hong) { 1960c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 1970c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(port->serial); 1980c9bd600SJi-Ze Hong (Peter Hong) int count = 0; 1990c9bd600SJi-Ze Hong (Peter Hong) int i; 2000c9bd600SJi-Ze Hong (Peter Hong) 2010c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 2020c9bd600SJi-Ze Hong (Peter Hong) if (serial_priv->conf_data[i] & F81534_PORT_UNAVAILABLE) 2030c9bd600SJi-Ze Hong (Peter Hong) continue; 2040c9bd600SJi-Ze Hong (Peter Hong) 2050c9bd600SJi-Ze Hong (Peter Hong) if (port->port_number == count) 2060c9bd600SJi-Ze Hong (Peter Hong) return i; 2070c9bd600SJi-Ze Hong (Peter Hong) 2080c9bd600SJi-Ze Hong (Peter Hong) ++count; 2090c9bd600SJi-Ze Hong (Peter Hong) } 2100c9bd600SJi-Ze Hong (Peter Hong) 2110c9bd600SJi-Ze Hong (Peter Hong) return -ENODEV; 2120c9bd600SJi-Ze Hong (Peter Hong) } 2130c9bd600SJi-Ze Hong (Peter Hong) 2140c9bd600SJi-Ze Hong (Peter Hong) static int f81534_set_register(struct usb_serial *serial, u16 reg, u8 data) 2150c9bd600SJi-Ze Hong (Peter Hong) { 2160c9bd600SJi-Ze Hong (Peter Hong) struct usb_interface *interface = serial->interface; 2170c9bd600SJi-Ze Hong (Peter Hong) struct usb_device *dev = serial->dev; 2180c9bd600SJi-Ze Hong (Peter Hong) size_t count = F81534_USB_MAX_RETRY; 2190c9bd600SJi-Ze Hong (Peter Hong) int status; 2200c9bd600SJi-Ze Hong (Peter Hong) u8 *tmp; 2210c9bd600SJi-Ze Hong (Peter Hong) 2220c9bd600SJi-Ze Hong (Peter Hong) tmp = kmalloc(sizeof(u8), GFP_KERNEL); 2230c9bd600SJi-Ze Hong (Peter Hong) if (!tmp) 2240c9bd600SJi-Ze Hong (Peter Hong) return -ENOMEM; 2250c9bd600SJi-Ze Hong (Peter Hong) 2260c9bd600SJi-Ze Hong (Peter Hong) *tmp = data; 2270c9bd600SJi-Ze Hong (Peter Hong) 2280c9bd600SJi-Ze Hong (Peter Hong) /* 2290c9bd600SJi-Ze Hong (Peter Hong) * Our device maybe not reply when heavily loading, We'll retry for 2300c9bd600SJi-Ze Hong (Peter Hong) * F81534_USB_MAX_RETRY times. 2310c9bd600SJi-Ze Hong (Peter Hong) */ 2320c9bd600SJi-Ze Hong (Peter Hong) while (count--) { 2330c9bd600SJi-Ze Hong (Peter Hong) status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 2340c9bd600SJi-Ze Hong (Peter Hong) F81534_SET_GET_REGISTER, 2350c9bd600SJi-Ze Hong (Peter Hong) USB_TYPE_VENDOR | USB_DIR_OUT, 2360c9bd600SJi-Ze Hong (Peter Hong) reg, 0, tmp, sizeof(u8), 2370c9bd600SJi-Ze Hong (Peter Hong) F81534_USB_TIMEOUT); 238cfb0fde7SJohan Hovold if (status == sizeof(u8)) { 2390c9bd600SJi-Ze Hong (Peter Hong) status = 0; 2400c9bd600SJi-Ze Hong (Peter Hong) break; 2410c9bd600SJi-Ze Hong (Peter Hong) } 2420c9bd600SJi-Ze Hong (Peter Hong) } 2430c9bd600SJi-Ze Hong (Peter Hong) 2440c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 2450c9bd600SJi-Ze Hong (Peter Hong) dev_err(&interface->dev, "%s: reg: %x data: %x failed: %d\n", 2460c9bd600SJi-Ze Hong (Peter Hong) __func__, reg, data, status); 2470c9bd600SJi-Ze Hong (Peter Hong) } 2480c9bd600SJi-Ze Hong (Peter Hong) 2490c9bd600SJi-Ze Hong (Peter Hong) kfree(tmp); 2500c9bd600SJi-Ze Hong (Peter Hong) return status; 2510c9bd600SJi-Ze Hong (Peter Hong) } 2520c9bd600SJi-Ze Hong (Peter Hong) 2530c9bd600SJi-Ze Hong (Peter Hong) static int f81534_get_register(struct usb_serial *serial, u16 reg, u8 *data) 2540c9bd600SJi-Ze Hong (Peter Hong) { 2550c9bd600SJi-Ze Hong (Peter Hong) struct usb_interface *interface = serial->interface; 2560c9bd600SJi-Ze Hong (Peter Hong) struct usb_device *dev = serial->dev; 2570c9bd600SJi-Ze Hong (Peter Hong) size_t count = F81534_USB_MAX_RETRY; 2580c9bd600SJi-Ze Hong (Peter Hong) int status; 2590c9bd600SJi-Ze Hong (Peter Hong) u8 *tmp; 2600c9bd600SJi-Ze Hong (Peter Hong) 2610c9bd600SJi-Ze Hong (Peter Hong) tmp = kmalloc(sizeof(u8), GFP_KERNEL); 2620c9bd600SJi-Ze Hong (Peter Hong) if (!tmp) 2630c9bd600SJi-Ze Hong (Peter Hong) return -ENOMEM; 2640c9bd600SJi-Ze Hong (Peter Hong) 2650c9bd600SJi-Ze Hong (Peter Hong) /* 2660c9bd600SJi-Ze Hong (Peter Hong) * Our device maybe not reply when heavily loading, We'll retry for 2670c9bd600SJi-Ze Hong (Peter Hong) * F81534_USB_MAX_RETRY times. 2680c9bd600SJi-Ze Hong (Peter Hong) */ 2690c9bd600SJi-Ze Hong (Peter Hong) while (count--) { 2700c9bd600SJi-Ze Hong (Peter Hong) status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 2710c9bd600SJi-Ze Hong (Peter Hong) F81534_SET_GET_REGISTER, 2720c9bd600SJi-Ze Hong (Peter Hong) USB_TYPE_VENDOR | USB_DIR_IN, 2730c9bd600SJi-Ze Hong (Peter Hong) reg, 0, tmp, sizeof(u8), 2740c9bd600SJi-Ze Hong (Peter Hong) F81534_USB_TIMEOUT); 2750c9bd600SJi-Ze Hong (Peter Hong) if (status > 0) { 2760c9bd600SJi-Ze Hong (Peter Hong) status = 0; 2770c9bd600SJi-Ze Hong (Peter Hong) break; 2780c9bd600SJi-Ze Hong (Peter Hong) } else if (status == 0) { 2790c9bd600SJi-Ze Hong (Peter Hong) status = -EIO; 2800c9bd600SJi-Ze Hong (Peter Hong) } 2810c9bd600SJi-Ze Hong (Peter Hong) } 2820c9bd600SJi-Ze Hong (Peter Hong) 2830c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 2840c9bd600SJi-Ze Hong (Peter Hong) dev_err(&interface->dev, "%s: reg: %x failed: %d\n", __func__, 2850c9bd600SJi-Ze Hong (Peter Hong) reg, status); 2860c9bd600SJi-Ze Hong (Peter Hong) goto end; 2870c9bd600SJi-Ze Hong (Peter Hong) } 2880c9bd600SJi-Ze Hong (Peter Hong) 2890c9bd600SJi-Ze Hong (Peter Hong) *data = *tmp; 2900c9bd600SJi-Ze Hong (Peter Hong) 2910c9bd600SJi-Ze Hong (Peter Hong) end: 2920c9bd600SJi-Ze Hong (Peter Hong) kfree(tmp); 2930c9bd600SJi-Ze Hong (Peter Hong) return status; 2940c9bd600SJi-Ze Hong (Peter Hong) } 2950c9bd600SJi-Ze Hong (Peter Hong) 296138651e1SJi-Ze Hong (Peter Hong) static int f81534_set_mask_register(struct usb_serial *serial, u16 reg, 297138651e1SJi-Ze Hong (Peter Hong) u8 mask, u8 data) 298138651e1SJi-Ze Hong (Peter Hong) { 299138651e1SJi-Ze Hong (Peter Hong) int status; 300138651e1SJi-Ze Hong (Peter Hong) u8 tmp; 301138651e1SJi-Ze Hong (Peter Hong) 302138651e1SJi-Ze Hong (Peter Hong) status = f81534_get_register(serial, reg, &tmp); 303138651e1SJi-Ze Hong (Peter Hong) if (status) 304138651e1SJi-Ze Hong (Peter Hong) return status; 305138651e1SJi-Ze Hong (Peter Hong) 306138651e1SJi-Ze Hong (Peter Hong) tmp &= ~mask; 307138651e1SJi-Ze Hong (Peter Hong) tmp |= (mask & data); 308138651e1SJi-Ze Hong (Peter Hong) 309138651e1SJi-Ze Hong (Peter Hong) return f81534_set_register(serial, reg, tmp); 310138651e1SJi-Ze Hong (Peter Hong) } 311138651e1SJi-Ze Hong (Peter Hong) 312bb543ca2SJi-Ze Hong (Peter Hong) static int f81534_set_phy_port_register(struct usb_serial *serial, int phy, 313bb543ca2SJi-Ze Hong (Peter Hong) u16 reg, u8 data) 314bb543ca2SJi-Ze Hong (Peter Hong) { 315bb543ca2SJi-Ze Hong (Peter Hong) return f81534_set_register(serial, reg + F81534_UART_OFFSET * phy, 316bb543ca2SJi-Ze Hong (Peter Hong) data); 317bb543ca2SJi-Ze Hong (Peter Hong) } 318bb543ca2SJi-Ze Hong (Peter Hong) 319bb543ca2SJi-Ze Hong (Peter Hong) static int f81534_get_phy_port_register(struct usb_serial *serial, int phy, 320bb543ca2SJi-Ze Hong (Peter Hong) u16 reg, u8 *data) 321bb543ca2SJi-Ze Hong (Peter Hong) { 322bb543ca2SJi-Ze Hong (Peter Hong) return f81534_get_register(serial, reg + F81534_UART_OFFSET * phy, 323bb543ca2SJi-Ze Hong (Peter Hong) data); 324bb543ca2SJi-Ze Hong (Peter Hong) } 325bb543ca2SJi-Ze Hong (Peter Hong) 3260c9bd600SJi-Ze Hong (Peter Hong) static int f81534_set_port_register(struct usb_serial_port *port, u16 reg, 3270c9bd600SJi-Ze Hong (Peter Hong) u8 data) 3280c9bd600SJi-Ze Hong (Peter Hong) { 3290c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 3300c9bd600SJi-Ze Hong (Peter Hong) 3310c9bd600SJi-Ze Hong (Peter Hong) return f81534_set_register(port->serial, 3320c9bd600SJi-Ze Hong (Peter Hong) reg + port_priv->phy_num * F81534_UART_OFFSET, data); 3330c9bd600SJi-Ze Hong (Peter Hong) } 3340c9bd600SJi-Ze Hong (Peter Hong) 3350c9bd600SJi-Ze Hong (Peter Hong) static int f81534_get_port_register(struct usb_serial_port *port, u16 reg, 3360c9bd600SJi-Ze Hong (Peter Hong) u8 *data) 3370c9bd600SJi-Ze Hong (Peter Hong) { 3380c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 3390c9bd600SJi-Ze Hong (Peter Hong) 3400c9bd600SJi-Ze Hong (Peter Hong) return f81534_get_register(port->serial, 3410c9bd600SJi-Ze Hong (Peter Hong) reg + port_priv->phy_num * F81534_UART_OFFSET, data); 3420c9bd600SJi-Ze Hong (Peter Hong) } 3430c9bd600SJi-Ze Hong (Peter Hong) 3440c9bd600SJi-Ze Hong (Peter Hong) /* 3450c9bd600SJi-Ze Hong (Peter Hong) * If we try to access the internal flash via SPI bus, we should check the bus 3460c9bd600SJi-Ze Hong (Peter Hong) * status for every command. e.g., F81534_BUS_REG_START/F81534_BUS_REG_END 3470c9bd600SJi-Ze Hong (Peter Hong) */ 3480c9bd600SJi-Ze Hong (Peter Hong) static int f81534_wait_for_spi_idle(struct usb_serial *serial) 3490c9bd600SJi-Ze Hong (Peter Hong) { 3500c9bd600SJi-Ze Hong (Peter Hong) size_t count = F81534_MAX_BUS_RETRY; 3510c9bd600SJi-Ze Hong (Peter Hong) u8 tmp; 3520c9bd600SJi-Ze Hong (Peter Hong) int status; 3530c9bd600SJi-Ze Hong (Peter Hong) 3540c9bd600SJi-Ze Hong (Peter Hong) do { 3550c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_register(serial, F81534_BUS_REG_STATUS, 3560c9bd600SJi-Ze Hong (Peter Hong) &tmp); 3570c9bd600SJi-Ze Hong (Peter Hong) if (status) 3580c9bd600SJi-Ze Hong (Peter Hong) return status; 3590c9bd600SJi-Ze Hong (Peter Hong) 3600c9bd600SJi-Ze Hong (Peter Hong) if (tmp & F81534_BUS_BUSY) 3610c9bd600SJi-Ze Hong (Peter Hong) continue; 3620c9bd600SJi-Ze Hong (Peter Hong) 3630c9bd600SJi-Ze Hong (Peter Hong) if (tmp & F81534_BUS_IDLE) 3640c9bd600SJi-Ze Hong (Peter Hong) break; 3650c9bd600SJi-Ze Hong (Peter Hong) 3660c9bd600SJi-Ze Hong (Peter Hong) } while (--count); 3670c9bd600SJi-Ze Hong (Peter Hong) 3680c9bd600SJi-Ze Hong (Peter Hong) if (!count) { 3690c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 3700c9bd600SJi-Ze Hong (Peter Hong) "%s: timed out waiting for idle SPI bus\n", 3710c9bd600SJi-Ze Hong (Peter Hong) __func__); 3720c9bd600SJi-Ze Hong (Peter Hong) return -EIO; 3730c9bd600SJi-Ze Hong (Peter Hong) } 3740c9bd600SJi-Ze Hong (Peter Hong) 3750c9bd600SJi-Ze Hong (Peter Hong) return f81534_set_register(serial, F81534_BUS_REG_STATUS, 3760c9bd600SJi-Ze Hong (Peter Hong) tmp & ~F81534_BUS_IDLE); 3770c9bd600SJi-Ze Hong (Peter Hong) } 3780c9bd600SJi-Ze Hong (Peter Hong) 3790c9bd600SJi-Ze Hong (Peter Hong) static int f81534_get_spi_register(struct usb_serial *serial, u16 reg, 3800c9bd600SJi-Ze Hong (Peter Hong) u8 *data) 3810c9bd600SJi-Ze Hong (Peter Hong) { 3820c9bd600SJi-Ze Hong (Peter Hong) int status; 3830c9bd600SJi-Ze Hong (Peter Hong) 3840c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_register(serial, reg, data); 3850c9bd600SJi-Ze Hong (Peter Hong) if (status) 3860c9bd600SJi-Ze Hong (Peter Hong) return status; 3870c9bd600SJi-Ze Hong (Peter Hong) 3880c9bd600SJi-Ze Hong (Peter Hong) return f81534_wait_for_spi_idle(serial); 3890c9bd600SJi-Ze Hong (Peter Hong) } 3900c9bd600SJi-Ze Hong (Peter Hong) 3910c9bd600SJi-Ze Hong (Peter Hong) static int f81534_set_spi_register(struct usb_serial *serial, u16 reg, u8 data) 3920c9bd600SJi-Ze Hong (Peter Hong) { 3930c9bd600SJi-Ze Hong (Peter Hong) int status; 3940c9bd600SJi-Ze Hong (Peter Hong) 3950c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_register(serial, reg, data); 3960c9bd600SJi-Ze Hong (Peter Hong) if (status) 3970c9bd600SJi-Ze Hong (Peter Hong) return status; 3980c9bd600SJi-Ze Hong (Peter Hong) 3990c9bd600SJi-Ze Hong (Peter Hong) return f81534_wait_for_spi_idle(serial); 4000c9bd600SJi-Ze Hong (Peter Hong) } 4010c9bd600SJi-Ze Hong (Peter Hong) 4020c9bd600SJi-Ze Hong (Peter Hong) static int f81534_read_flash(struct usb_serial *serial, u32 address, 4030c9bd600SJi-Ze Hong (Peter Hong) size_t size, u8 *buf) 4040c9bd600SJi-Ze Hong (Peter Hong) { 4050c9bd600SJi-Ze Hong (Peter Hong) u8 tmp_buf[F81534_MAX_DATA_BLOCK]; 4060c9bd600SJi-Ze Hong (Peter Hong) size_t block = 0; 4070c9bd600SJi-Ze Hong (Peter Hong) size_t read_size; 4080c9bd600SJi-Ze Hong (Peter Hong) size_t count; 4090c9bd600SJi-Ze Hong (Peter Hong) int status; 4100c9bd600SJi-Ze Hong (Peter Hong) int offset; 4110c9bd600SJi-Ze Hong (Peter Hong) u16 reg_tmp; 4120c9bd600SJi-Ze Hong (Peter Hong) 4130c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 4140c9bd600SJi-Ze Hong (Peter Hong) F81534_CMD_READ); 4150c9bd600SJi-Ze Hong (Peter Hong) if (status) 4160c9bd600SJi-Ze Hong (Peter Hong) return status; 4170c9bd600SJi-Ze Hong (Peter Hong) 4180c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 4190c9bd600SJi-Ze Hong (Peter Hong) (address >> 16) & 0xff); 4200c9bd600SJi-Ze Hong (Peter Hong) if (status) 4210c9bd600SJi-Ze Hong (Peter Hong) return status; 4220c9bd600SJi-Ze Hong (Peter Hong) 4230c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 4240c9bd600SJi-Ze Hong (Peter Hong) (address >> 8) & 0xff); 4250c9bd600SJi-Ze Hong (Peter Hong) if (status) 4260c9bd600SJi-Ze Hong (Peter Hong) return status; 4270c9bd600SJi-Ze Hong (Peter Hong) 4280c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, F81534_BUS_REG_START, 4290c9bd600SJi-Ze Hong (Peter Hong) (address >> 0) & 0xff); 4300c9bd600SJi-Ze Hong (Peter Hong) if (status) 4310c9bd600SJi-Ze Hong (Peter Hong) return status; 4320c9bd600SJi-Ze Hong (Peter Hong) 4330c9bd600SJi-Ze Hong (Peter Hong) /* Continuous read mode */ 4340c9bd600SJi-Ze Hong (Peter Hong) do { 4350c9bd600SJi-Ze Hong (Peter Hong) read_size = min_t(size_t, F81534_MAX_DATA_BLOCK, size); 4360c9bd600SJi-Ze Hong (Peter Hong) 4370c9bd600SJi-Ze Hong (Peter Hong) for (count = 0; count < read_size; ++count) { 4380c9bd600SJi-Ze Hong (Peter Hong) /* To write F81534_BUS_REG_END when final byte */ 4390c9bd600SJi-Ze Hong (Peter Hong) if (size <= F81534_MAX_DATA_BLOCK && 4400c9bd600SJi-Ze Hong (Peter Hong) read_size == count + 1) 4410c9bd600SJi-Ze Hong (Peter Hong) reg_tmp = F81534_BUS_REG_END; 4420c9bd600SJi-Ze Hong (Peter Hong) else 4430c9bd600SJi-Ze Hong (Peter Hong) reg_tmp = F81534_BUS_REG_START; 4440c9bd600SJi-Ze Hong (Peter Hong) 4450c9bd600SJi-Ze Hong (Peter Hong) /* 4460c9bd600SJi-Ze Hong (Peter Hong) * Dummy code, force IC to generate a read pulse, the 4470c9bd600SJi-Ze Hong (Peter Hong) * set of value 0xf1 is dont care (any value is ok) 4480c9bd600SJi-Ze Hong (Peter Hong) */ 4490c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_spi_register(serial, reg_tmp, 4500c9bd600SJi-Ze Hong (Peter Hong) 0xf1); 4510c9bd600SJi-Ze Hong (Peter Hong) if (status) 4520c9bd600SJi-Ze Hong (Peter Hong) return status; 4530c9bd600SJi-Ze Hong (Peter Hong) 4540c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_spi_register(serial, 4550c9bd600SJi-Ze Hong (Peter Hong) F81534_BUS_READ_DATA, 4560c9bd600SJi-Ze Hong (Peter Hong) &tmp_buf[count]); 4570c9bd600SJi-Ze Hong (Peter Hong) if (status) 4580c9bd600SJi-Ze Hong (Peter Hong) return status; 4590c9bd600SJi-Ze Hong (Peter Hong) 4600c9bd600SJi-Ze Hong (Peter Hong) offset = count + block * F81534_MAX_DATA_BLOCK; 4610c9bd600SJi-Ze Hong (Peter Hong) buf[offset] = tmp_buf[count]; 4620c9bd600SJi-Ze Hong (Peter Hong) } 4630c9bd600SJi-Ze Hong (Peter Hong) 4640c9bd600SJi-Ze Hong (Peter Hong) size -= read_size; 4650c9bd600SJi-Ze Hong (Peter Hong) ++block; 4660c9bd600SJi-Ze Hong (Peter Hong) } while (size); 4670c9bd600SJi-Ze Hong (Peter Hong) 4680c9bd600SJi-Ze Hong (Peter Hong) return 0; 4690c9bd600SJi-Ze Hong (Peter Hong) } 4700c9bd600SJi-Ze Hong (Peter Hong) 4710c9bd600SJi-Ze Hong (Peter Hong) static void f81534_prepare_write_buffer(struct usb_serial_port *port, u8 *buf) 4720c9bd600SJi-Ze Hong (Peter Hong) { 4730c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 4740c9bd600SJi-Ze Hong (Peter Hong) int phy_num = port_priv->phy_num; 4750c9bd600SJi-Ze Hong (Peter Hong) u8 tx_len; 4760c9bd600SJi-Ze Hong (Peter Hong) int i; 4770c9bd600SJi-Ze Hong (Peter Hong) 4780c9bd600SJi-Ze Hong (Peter Hong) /* 4790c9bd600SJi-Ze Hong (Peter Hong) * The block layout is fixed with 4x128 Bytes, per 128 Bytes a port. 4800c9bd600SJi-Ze Hong (Peter Hong) * index 0: port phy idx (e.g., 0,1,2,3) 4810c9bd600SJi-Ze Hong (Peter Hong) * index 1: only F81534_TOKEN_WRITE 4820c9bd600SJi-Ze Hong (Peter Hong) * index 2: serial TX out length 4830c9bd600SJi-Ze Hong (Peter Hong) * index 3: fix to 0 4840c9bd600SJi-Ze Hong (Peter Hong) * index 4~127: serial out data block 4850c9bd600SJi-Ze Hong (Peter Hong) */ 4860c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 4870c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE] = i; 4880c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE + 1] = F81534_TOKEN_WRITE; 4890c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE + 2] = 0; 4900c9bd600SJi-Ze Hong (Peter Hong) buf[i * F81534_RECEIVE_BLOCK_SIZE + 3] = 0; 4910c9bd600SJi-Ze Hong (Peter Hong) } 4920c9bd600SJi-Ze Hong (Peter Hong) 4930c9bd600SJi-Ze Hong (Peter Hong) tx_len = kfifo_out_locked(&port->write_fifo, 4940c9bd600SJi-Ze Hong (Peter Hong) &buf[phy_num * F81534_RECEIVE_BLOCK_SIZE + 4], 4950c9bd600SJi-Ze Hong (Peter Hong) F81534_MAX_TX_SIZE, &port->lock); 4960c9bd600SJi-Ze Hong (Peter Hong) 4970c9bd600SJi-Ze Hong (Peter Hong) buf[phy_num * F81534_RECEIVE_BLOCK_SIZE + 2] = tx_len; 4980c9bd600SJi-Ze Hong (Peter Hong) } 4990c9bd600SJi-Ze Hong (Peter Hong) 5000c9bd600SJi-Ze Hong (Peter Hong) static int f81534_submit_writer(struct usb_serial_port *port, gfp_t mem_flags) 5010c9bd600SJi-Ze Hong (Peter Hong) { 5020c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 5030c9bd600SJi-Ze Hong (Peter Hong) struct urb *urb; 5040c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 5050c9bd600SJi-Ze Hong (Peter Hong) int result; 5060c9bd600SJi-Ze Hong (Peter Hong) 5070c9bd600SJi-Ze Hong (Peter Hong) /* Check is any data in write_fifo */ 5080c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port->lock, flags); 5090c9bd600SJi-Ze Hong (Peter Hong) 5100c9bd600SJi-Ze Hong (Peter Hong) if (kfifo_is_empty(&port->write_fifo)) { 5110c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port->lock, flags); 5120c9bd600SJi-Ze Hong (Peter Hong) return 0; 5130c9bd600SJi-Ze Hong (Peter Hong) } 5140c9bd600SJi-Ze Hong (Peter Hong) 5150c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port->lock, flags); 5160c9bd600SJi-Ze Hong (Peter Hong) 5170c9bd600SJi-Ze Hong (Peter Hong) /* Check H/W is TXEMPTY */ 5180c9bd600SJi-Ze Hong (Peter Hong) if (!test_and_clear_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty)) 5190c9bd600SJi-Ze Hong (Peter Hong) return 0; 5200c9bd600SJi-Ze Hong (Peter Hong) 5210c9bd600SJi-Ze Hong (Peter Hong) urb = port->write_urbs[0]; 5220c9bd600SJi-Ze Hong (Peter Hong) f81534_prepare_write_buffer(port, port->bulk_out_buffers[0]); 5230c9bd600SJi-Ze Hong (Peter Hong) urb->transfer_buffer_length = F81534_WRITE_BUFFER_SIZE; 5240c9bd600SJi-Ze Hong (Peter Hong) 5250c9bd600SJi-Ze Hong (Peter Hong) result = usb_submit_urb(urb, mem_flags); 5260c9bd600SJi-Ze Hong (Peter Hong) if (result) { 5270c9bd600SJi-Ze Hong (Peter Hong) set_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 5280c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed: %d\n", __func__, 5290c9bd600SJi-Ze Hong (Peter Hong) result); 5300c9bd600SJi-Ze Hong (Peter Hong) return result; 5310c9bd600SJi-Ze Hong (Peter Hong) } 5320c9bd600SJi-Ze Hong (Peter Hong) 5330c9bd600SJi-Ze Hong (Peter Hong) usb_serial_port_softint(port); 5340c9bd600SJi-Ze Hong (Peter Hong) return 0; 5350c9bd600SJi-Ze Hong (Peter Hong) } 5360c9bd600SJi-Ze Hong (Peter Hong) 5370c9bd600SJi-Ze Hong (Peter Hong) static u32 f81534_calc_baud_divisor(u32 baudrate, u32 clockrate) 5380c9bd600SJi-Ze Hong (Peter Hong) { 5390c9bd600SJi-Ze Hong (Peter Hong) /* Round to nearest divisor */ 5400c9bd600SJi-Ze Hong (Peter Hong) return DIV_ROUND_CLOSEST(clockrate, baudrate); 5410c9bd600SJi-Ze Hong (Peter Hong) } 5420c9bd600SJi-Ze Hong (Peter Hong) 5433aacac02SJi-Ze Hong (Peter Hong) static int f81534_find_clk(u32 baudrate) 5443aacac02SJi-Ze Hong (Peter Hong) { 5453aacac02SJi-Ze Hong (Peter Hong) int idx; 5463aacac02SJi-Ze Hong (Peter Hong) 5473aacac02SJi-Ze Hong (Peter Hong) for (idx = 0; idx < ARRAY_SIZE(baudrate_table); ++idx) { 5483aacac02SJi-Ze Hong (Peter Hong) if (baudrate <= baudrate_table[idx] && 5493aacac02SJi-Ze Hong (Peter Hong) baudrate_table[idx] % baudrate == 0) 5503aacac02SJi-Ze Hong (Peter Hong) return idx; 5513aacac02SJi-Ze Hong (Peter Hong) } 5523aacac02SJi-Ze Hong (Peter Hong) 5533aacac02SJi-Ze Hong (Peter Hong) return -EINVAL; 5543aacac02SJi-Ze Hong (Peter Hong) } 5553aacac02SJi-Ze Hong (Peter Hong) 5563aacac02SJi-Ze Hong (Peter Hong) static int f81534_set_port_config(struct usb_serial_port *port, 5573aacac02SJi-Ze Hong (Peter Hong) struct tty_struct *tty, u32 baudrate, u32 old_baudrate, u8 lcr) 5580c9bd600SJi-Ze Hong (Peter Hong) { 5597c36e6e1SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 5600c9bd600SJi-Ze Hong (Peter Hong) u32 divisor; 5610c9bd600SJi-Ze Hong (Peter Hong) int status; 5623aacac02SJi-Ze Hong (Peter Hong) int i; 5633aacac02SJi-Ze Hong (Peter Hong) int idx; 5640c9bd600SJi-Ze Hong (Peter Hong) u8 value; 5653aacac02SJi-Ze Hong (Peter Hong) u32 baud_list[] = {baudrate, old_baudrate, F81534_DEFAULT_BAUD_RATE}; 5663aacac02SJi-Ze Hong (Peter Hong) 5673aacac02SJi-Ze Hong (Peter Hong) for (i = 0; i < ARRAY_SIZE(baud_list); ++i) { 5683aacac02SJi-Ze Hong (Peter Hong) baudrate = baud_list[i]; 569*188c9c2eSJohan Hovold if (baudrate == 0) { 570*188c9c2eSJohan Hovold tty_encode_baud_rate(tty, 0, 0); 571*188c9c2eSJohan Hovold return 0; 572*188c9c2eSJohan Hovold } 573*188c9c2eSJohan Hovold 574*188c9c2eSJohan Hovold idx = f81534_find_clk(baudrate); 575*188c9c2eSJohan Hovold if (idx >= 0) { 5763aacac02SJi-Ze Hong (Peter Hong) tty_encode_baud_rate(tty, baudrate, baudrate); 5773aacac02SJi-Ze Hong (Peter Hong) break; 5783aacac02SJi-Ze Hong (Peter Hong) } 5793aacac02SJi-Ze Hong (Peter Hong) } 5803aacac02SJi-Ze Hong (Peter Hong) 5813aacac02SJi-Ze Hong (Peter Hong) if (idx < 0) 5823aacac02SJi-Ze Hong (Peter Hong) return -EINVAL; 5833aacac02SJi-Ze Hong (Peter Hong) 5843aacac02SJi-Ze Hong (Peter Hong) port_priv->baud_base = baudrate_table[idx]; 5853aacac02SJi-Ze Hong (Peter Hong) port_priv->shadow_clk &= ~F81534_CLK_MASK; 5863aacac02SJi-Ze Hong (Peter Hong) port_priv->shadow_clk |= clock_table[idx]; 5873aacac02SJi-Ze Hong (Peter Hong) 5883aacac02SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_CLOCK_REG, 5893aacac02SJi-Ze Hong (Peter Hong) port_priv->shadow_clk); 5903aacac02SJi-Ze Hong (Peter Hong) if (status) { 5913aacac02SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "CLOCK_REG setting failed\n"); 5923aacac02SJi-Ze Hong (Peter Hong) return status; 5933aacac02SJi-Ze Hong (Peter Hong) } 5940c9bd600SJi-Ze Hong (Peter Hong) 5950c9bd600SJi-Ze Hong (Peter Hong) if (baudrate <= 1200) 5960c9bd600SJi-Ze Hong (Peter Hong) value = F81534_1X_RXTRIGGER; /* 128 FIFO & TL: 1x */ 5970c9bd600SJi-Ze Hong (Peter Hong) else 5980c9bd600SJi-Ze Hong (Peter Hong) value = F81534_8X_RXTRIGGER; /* 128 FIFO & TL: 8x */ 5990c9bd600SJi-Ze Hong (Peter Hong) 6000c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_CONFIG1_REG, value); 6010c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6020c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: CONFIG1 setting failed\n", __func__); 6030c9bd600SJi-Ze Hong (Peter Hong) return status; 6040c9bd600SJi-Ze Hong (Peter Hong) } 6050c9bd600SJi-Ze Hong (Peter Hong) 6060c9bd600SJi-Ze Hong (Peter Hong) if (baudrate <= 1200) 6070c9bd600SJi-Ze Hong (Peter Hong) value = UART_FCR_TRIGGER_1 | UART_FCR_ENABLE_FIFO; /* TL: 1 */ 6080c9bd600SJi-Ze Hong (Peter Hong) else 6093aacac02SJi-Ze Hong (Peter Hong) value = UART_FCR_TRIGGER_8 | UART_FCR_ENABLE_FIFO; /* TL: 8 */ 6100c9bd600SJi-Ze Hong (Peter Hong) 6110c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_FIFO_CONTROL_REG, 6120c9bd600SJi-Ze Hong (Peter Hong) value); 6130c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6140c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: FCR setting failed\n", __func__); 6150c9bd600SJi-Ze Hong (Peter Hong) return status; 6160c9bd600SJi-Ze Hong (Peter Hong) } 6170c9bd600SJi-Ze Hong (Peter Hong) 6183aacac02SJi-Ze Hong (Peter Hong) divisor = f81534_calc_baud_divisor(baudrate, port_priv->baud_base); 6197c36e6e1SJi-Ze Hong (Peter Hong) 6207c36e6e1SJi-Ze Hong (Peter Hong) mutex_lock(&port_priv->lcr_mutex); 6217c36e6e1SJi-Ze Hong (Peter Hong) 6220c9bd600SJi-Ze Hong (Peter Hong) value = UART_LCR_DLAB; 6230c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG, 6240c9bd600SJi-Ze Hong (Peter Hong) value); 6250c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6260c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set LCR failed\n", __func__); 6277c36e6e1SJi-Ze Hong (Peter Hong) goto out_unlock; 6280c9bd600SJi-Ze Hong (Peter Hong) } 6290c9bd600SJi-Ze Hong (Peter Hong) 6300c9bd600SJi-Ze Hong (Peter Hong) value = divisor & 0xff; 6310c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_DIVISOR_LSB_REG, value); 6320c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6330c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set DLAB LSB failed\n", __func__); 6347c36e6e1SJi-Ze Hong (Peter Hong) goto out_unlock; 6350c9bd600SJi-Ze Hong (Peter Hong) } 6360c9bd600SJi-Ze Hong (Peter Hong) 6370c9bd600SJi-Ze Hong (Peter Hong) value = (divisor >> 8) & 0xff; 6380c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_DIVISOR_MSB_REG, value); 6390c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6400c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set DLAB MSB failed\n", __func__); 6417c36e6e1SJi-Ze Hong (Peter Hong) goto out_unlock; 6420c9bd600SJi-Ze Hong (Peter Hong) } 6430c9bd600SJi-Ze Hong (Peter Hong) 6447c36e6e1SJi-Ze Hong (Peter Hong) value = lcr | (port_priv->shadow_lcr & UART_LCR_SBC); 6457c36e6e1SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG, 6467c36e6e1SJi-Ze Hong (Peter Hong) value); 6470c9bd600SJi-Ze Hong (Peter Hong) if (status) { 6480c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set LCR failed\n", __func__); 6497c36e6e1SJi-Ze Hong (Peter Hong) goto out_unlock; 6507c36e6e1SJi-Ze Hong (Peter Hong) } 6517c36e6e1SJi-Ze Hong (Peter Hong) 6527c36e6e1SJi-Ze Hong (Peter Hong) port_priv->shadow_lcr = value; 6537c36e6e1SJi-Ze Hong (Peter Hong) out_unlock: 6547c36e6e1SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->lcr_mutex); 6557c36e6e1SJi-Ze Hong (Peter Hong) 6560c9bd600SJi-Ze Hong (Peter Hong) return status; 6570c9bd600SJi-Ze Hong (Peter Hong) } 6580c9bd600SJi-Ze Hong (Peter Hong) 6597c36e6e1SJi-Ze Hong (Peter Hong) static void f81534_break_ctl(struct tty_struct *tty, int break_state) 6607c36e6e1SJi-Ze Hong (Peter Hong) { 6617c36e6e1SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = tty->driver_data; 6627c36e6e1SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 6637c36e6e1SJi-Ze Hong (Peter Hong) int status; 6647c36e6e1SJi-Ze Hong (Peter Hong) 6657c36e6e1SJi-Ze Hong (Peter Hong) mutex_lock(&port_priv->lcr_mutex); 6667c36e6e1SJi-Ze Hong (Peter Hong) 6677c36e6e1SJi-Ze Hong (Peter Hong) if (break_state) 6687c36e6e1SJi-Ze Hong (Peter Hong) port_priv->shadow_lcr |= UART_LCR_SBC; 6697c36e6e1SJi-Ze Hong (Peter Hong) else 6707c36e6e1SJi-Ze Hong (Peter Hong) port_priv->shadow_lcr &= ~UART_LCR_SBC; 6717c36e6e1SJi-Ze Hong (Peter Hong) 6727c36e6e1SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_LINE_CONTROL_REG, 6737c36e6e1SJi-Ze Hong (Peter Hong) port_priv->shadow_lcr); 6747c36e6e1SJi-Ze Hong (Peter Hong) if (status) 6757c36e6e1SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "set break failed: %d\n", status); 6767c36e6e1SJi-Ze Hong (Peter Hong) 6777c36e6e1SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->lcr_mutex); 6780c9bd600SJi-Ze Hong (Peter Hong) } 6790c9bd600SJi-Ze Hong (Peter Hong) 6800c9bd600SJi-Ze Hong (Peter Hong) static int f81534_update_mctrl(struct usb_serial_port *port, unsigned int set, 6810c9bd600SJi-Ze Hong (Peter Hong) unsigned int clear) 6820c9bd600SJi-Ze Hong (Peter Hong) { 6830c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 6840c9bd600SJi-Ze Hong (Peter Hong) int status; 6850c9bd600SJi-Ze Hong (Peter Hong) u8 tmp; 6860c9bd600SJi-Ze Hong (Peter Hong) 6870c9bd600SJi-Ze Hong (Peter Hong) if (((set | clear) & (TIOCM_DTR | TIOCM_RTS)) == 0) 6880c9bd600SJi-Ze Hong (Peter Hong) return 0; /* no change */ 6890c9bd600SJi-Ze Hong (Peter Hong) 6900c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&port_priv->mcr_mutex); 6910c9bd600SJi-Ze Hong (Peter Hong) 6920c9bd600SJi-Ze Hong (Peter Hong) /* 'Set' takes precedence over 'Clear' */ 6930c9bd600SJi-Ze Hong (Peter Hong) clear &= ~set; 6940c9bd600SJi-Ze Hong (Peter Hong) 6950c9bd600SJi-Ze Hong (Peter Hong) /* Always enable UART_MCR_OUT2 */ 6960c9bd600SJi-Ze Hong (Peter Hong) tmp = UART_MCR_OUT2 | port_priv->shadow_mcr; 6970c9bd600SJi-Ze Hong (Peter Hong) 6980c9bd600SJi-Ze Hong (Peter Hong) if (clear & TIOCM_DTR) 6990c9bd600SJi-Ze Hong (Peter Hong) tmp &= ~UART_MCR_DTR; 7000c9bd600SJi-Ze Hong (Peter Hong) 7010c9bd600SJi-Ze Hong (Peter Hong) if (clear & TIOCM_RTS) 7020c9bd600SJi-Ze Hong (Peter Hong) tmp &= ~UART_MCR_RTS; 7030c9bd600SJi-Ze Hong (Peter Hong) 7040c9bd600SJi-Ze Hong (Peter Hong) if (set & TIOCM_DTR) 7050c9bd600SJi-Ze Hong (Peter Hong) tmp |= UART_MCR_DTR; 7060c9bd600SJi-Ze Hong (Peter Hong) 7070c9bd600SJi-Ze Hong (Peter Hong) if (set & TIOCM_RTS) 7080c9bd600SJi-Ze Hong (Peter Hong) tmp |= UART_MCR_RTS; 7090c9bd600SJi-Ze Hong (Peter Hong) 7100c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, F81534_MODEM_CONTROL_REG, tmp); 7110c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 7120c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: MCR write failed\n", __func__); 7130c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->mcr_mutex); 7140c9bd600SJi-Ze Hong (Peter Hong) return status; 7150c9bd600SJi-Ze Hong (Peter Hong) } 7160c9bd600SJi-Ze Hong (Peter Hong) 7170c9bd600SJi-Ze Hong (Peter Hong) port_priv->shadow_mcr = tmp; 7180c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->mcr_mutex); 7190c9bd600SJi-Ze Hong (Peter Hong) return 0; 7200c9bd600SJi-Ze Hong (Peter Hong) } 7210c9bd600SJi-Ze Hong (Peter Hong) 7220c9bd600SJi-Ze Hong (Peter Hong) /* 7230c9bd600SJi-Ze Hong (Peter Hong) * This function will search the data area with token F81534_CUSTOM_VALID_TOKEN 7240c9bd600SJi-Ze Hong (Peter Hong) * for latest configuration index. If nothing found 7250c9bd600SJi-Ze Hong (Peter Hong) * (*index = F81534_CUSTOM_NO_CUSTOM_DATA), We'll load default configure in 7260c9bd600SJi-Ze Hong (Peter Hong) * F81534_DEF_CONF_ADDRESS_START section. 7270c9bd600SJi-Ze Hong (Peter Hong) * 7280c9bd600SJi-Ze Hong (Peter Hong) * Due to we only use block0 to save data, so *index should be 0 or 7290c9bd600SJi-Ze Hong (Peter Hong) * F81534_CUSTOM_NO_CUSTOM_DATA. 7300c9bd600SJi-Ze Hong (Peter Hong) */ 7310c9bd600SJi-Ze Hong (Peter Hong) static int f81534_find_config_idx(struct usb_serial *serial, u8 *index) 7320c9bd600SJi-Ze Hong (Peter Hong) { 7330c9bd600SJi-Ze Hong (Peter Hong) u8 tmp; 7340c9bd600SJi-Ze Hong (Peter Hong) int status; 7350c9bd600SJi-Ze Hong (Peter Hong) 7360c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, F81534_CUSTOM_ADDRESS_START, 1, 7370c9bd600SJi-Ze Hong (Peter Hong) &tmp); 7380c9bd600SJi-Ze Hong (Peter Hong) if (status) { 7390c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, "%s: read failed: %d\n", 7400c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 7410c9bd600SJi-Ze Hong (Peter Hong) return status; 7420c9bd600SJi-Ze Hong (Peter Hong) } 7430c9bd600SJi-Ze Hong (Peter Hong) 7440c9bd600SJi-Ze Hong (Peter Hong) /* We'll use the custom data when the data is valid. */ 7450c9bd600SJi-Ze Hong (Peter Hong) if (tmp == F81534_CUSTOM_VALID_TOKEN) 7460c9bd600SJi-Ze Hong (Peter Hong) *index = 0; 7470c9bd600SJi-Ze Hong (Peter Hong) else 7480c9bd600SJi-Ze Hong (Peter Hong) *index = F81534_CUSTOM_NO_CUSTOM_DATA; 7490c9bd600SJi-Ze Hong (Peter Hong) 7500c9bd600SJi-Ze Hong (Peter Hong) return 0; 7510c9bd600SJi-Ze Hong (Peter Hong) } 7520c9bd600SJi-Ze Hong (Peter Hong) 7530c9bd600SJi-Ze Hong (Peter Hong) /* 754bb543ca2SJi-Ze Hong (Peter Hong) * The F81532/534 will not report serial port to USB serial subsystem when 755bb543ca2SJi-Ze Hong (Peter Hong) * H/W DCD/DSR/CTS/RI/RX pin connected to ground. 756bb543ca2SJi-Ze Hong (Peter Hong) * 757bb543ca2SJi-Ze Hong (Peter Hong) * To detect RX pin status, we'll enable MCR interal loopback, disable it and 758bb543ca2SJi-Ze Hong (Peter Hong) * delayed for 60ms. It connected to ground If LSR register report UART_LSR_BI. 759bb543ca2SJi-Ze Hong (Peter Hong) */ 760bb543ca2SJi-Ze Hong (Peter Hong) static bool f81534_check_port_hw_disabled(struct usb_serial *serial, int phy) 761bb543ca2SJi-Ze Hong (Peter Hong) { 762bb543ca2SJi-Ze Hong (Peter Hong) int status; 763bb543ca2SJi-Ze Hong (Peter Hong) u8 old_mcr; 764bb543ca2SJi-Ze Hong (Peter Hong) u8 msr; 765bb543ca2SJi-Ze Hong (Peter Hong) u8 lsr; 766bb543ca2SJi-Ze Hong (Peter Hong) u8 msr_mask; 767bb543ca2SJi-Ze Hong (Peter Hong) 768bb543ca2SJi-Ze Hong (Peter Hong) msr_mask = UART_MSR_DCD | UART_MSR_RI | UART_MSR_DSR | UART_MSR_CTS; 769bb543ca2SJi-Ze Hong (Peter Hong) 770bb543ca2SJi-Ze Hong (Peter Hong) status = f81534_get_phy_port_register(serial, phy, 771bb543ca2SJi-Ze Hong (Peter Hong) F81534_MODEM_STATUS_REG, &msr); 772bb543ca2SJi-Ze Hong (Peter Hong) if (status) 773bb543ca2SJi-Ze Hong (Peter Hong) return false; 774bb543ca2SJi-Ze Hong (Peter Hong) 775bb543ca2SJi-Ze Hong (Peter Hong) if ((msr & msr_mask) != msr_mask) 776bb543ca2SJi-Ze Hong (Peter Hong) return false; 777bb543ca2SJi-Ze Hong (Peter Hong) 778bb543ca2SJi-Ze Hong (Peter Hong) status = f81534_set_phy_port_register(serial, phy, 779bb543ca2SJi-Ze Hong (Peter Hong) F81534_FIFO_CONTROL_REG, UART_FCR_ENABLE_FIFO | 780bb543ca2SJi-Ze Hong (Peter Hong) UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); 781bb543ca2SJi-Ze Hong (Peter Hong) if (status) 782bb543ca2SJi-Ze Hong (Peter Hong) return false; 783bb543ca2SJi-Ze Hong (Peter Hong) 784bb543ca2SJi-Ze Hong (Peter Hong) status = f81534_get_phy_port_register(serial, phy, 785bb543ca2SJi-Ze Hong (Peter Hong) F81534_MODEM_CONTROL_REG, &old_mcr); 786bb543ca2SJi-Ze Hong (Peter Hong) if (status) 787bb543ca2SJi-Ze Hong (Peter Hong) return false; 788bb543ca2SJi-Ze Hong (Peter Hong) 789bb543ca2SJi-Ze Hong (Peter Hong) status = f81534_set_phy_port_register(serial, phy, 790bb543ca2SJi-Ze Hong (Peter Hong) F81534_MODEM_CONTROL_REG, UART_MCR_LOOP); 791bb543ca2SJi-Ze Hong (Peter Hong) if (status) 792bb543ca2SJi-Ze Hong (Peter Hong) return false; 793bb543ca2SJi-Ze Hong (Peter Hong) 794bb543ca2SJi-Ze Hong (Peter Hong) status = f81534_set_phy_port_register(serial, phy, 795bb543ca2SJi-Ze Hong (Peter Hong) F81534_MODEM_CONTROL_REG, 0x0); 796bb543ca2SJi-Ze Hong (Peter Hong) if (status) 797bb543ca2SJi-Ze Hong (Peter Hong) return false; 798bb543ca2SJi-Ze Hong (Peter Hong) 799bb543ca2SJi-Ze Hong (Peter Hong) msleep(60); 800bb543ca2SJi-Ze Hong (Peter Hong) 801bb543ca2SJi-Ze Hong (Peter Hong) status = f81534_get_phy_port_register(serial, phy, 802bb543ca2SJi-Ze Hong (Peter Hong) F81534_LINE_STATUS_REG, &lsr); 803bb543ca2SJi-Ze Hong (Peter Hong) if (status) 804bb543ca2SJi-Ze Hong (Peter Hong) return false; 805bb543ca2SJi-Ze Hong (Peter Hong) 806bb543ca2SJi-Ze Hong (Peter Hong) status = f81534_set_phy_port_register(serial, phy, 807bb543ca2SJi-Ze Hong (Peter Hong) F81534_MODEM_CONTROL_REG, old_mcr); 808bb543ca2SJi-Ze Hong (Peter Hong) if (status) 809bb543ca2SJi-Ze Hong (Peter Hong) return false; 810bb543ca2SJi-Ze Hong (Peter Hong) 811bb543ca2SJi-Ze Hong (Peter Hong) if ((lsr & UART_LSR_BI) == UART_LSR_BI) 812bb543ca2SJi-Ze Hong (Peter Hong) return true; 813bb543ca2SJi-Ze Hong (Peter Hong) 814bb543ca2SJi-Ze Hong (Peter Hong) return false; 815bb543ca2SJi-Ze Hong (Peter Hong) } 816bb543ca2SJi-Ze Hong (Peter Hong) 817bb543ca2SJi-Ze Hong (Peter Hong) /* 8180c9bd600SJi-Ze Hong (Peter Hong) * We had 2 generation of F81532/534 IC. All has an internal storage. 8190c9bd600SJi-Ze Hong (Peter Hong) * 8200c9bd600SJi-Ze Hong (Peter Hong) * 1st is pure USB-to-TTL RS232 IC and designed for 4 ports only, no any 8210c9bd600SJi-Ze Hong (Peter Hong) * internal data will used. All mode and gpio control should manually set 8220c9bd600SJi-Ze Hong (Peter Hong) * by AP or Driver and all storage space value are 0xff. The 8230c9bd600SJi-Ze Hong (Peter Hong) * f81534_calc_num_ports() will run to final we marked as "oldest version" 8240c9bd600SJi-Ze Hong (Peter Hong) * for this IC. 8250c9bd600SJi-Ze Hong (Peter Hong) * 8260c9bd600SJi-Ze Hong (Peter Hong) * 2rd is designed to more generic to use any transceiver and this is our 8270c9bd600SJi-Ze Hong (Peter Hong) * mass production type. We'll save data in F81534_CUSTOM_ADDRESS_START 8280c9bd600SJi-Ze Hong (Peter Hong) * (0x2f00) with 9bytes. The 1st byte is a indicater. If the token is 8290c9bd600SJi-Ze Hong (Peter Hong) * F81534_CUSTOM_VALID_TOKEN(0xf0), the IC is 2nd gen type, the following 8300c9bd600SJi-Ze Hong (Peter Hong) * 4bytes save port mode (0:RS232/1:RS485 Invert/2:RS485), and the last 8310c9bd600SJi-Ze Hong (Peter Hong) * 4bytes save GPIO state(value from 0~7 to represent 3 GPIO output pin). 8320c9bd600SJi-Ze Hong (Peter Hong) * The f81534_calc_num_ports() will run to "new style" with checking 8330c9bd600SJi-Ze Hong (Peter Hong) * F81534_PORT_UNAVAILABLE section. 8340c9bd600SJi-Ze Hong (Peter Hong) */ 83507814246SJohan Hovold static int f81534_calc_num_ports(struct usb_serial *serial, 83607814246SJohan Hovold struct usb_serial_endpoints *epds) 8370c9bd600SJi-Ze Hong (Peter Hong) { 838f047d357SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv; 839cac4cea5SJohan Hovold struct device *dev = &serial->interface->dev; 840cac4cea5SJohan Hovold int size_bulk_in = usb_endpoint_maxp(epds->bulk_in[0]); 841cac4cea5SJohan Hovold int size_bulk_out = usb_endpoint_maxp(epds->bulk_out[0]); 8420c9bd600SJi-Ze Hong (Peter Hong) u8 num_port = 0; 843f047d357SJi-Ze Hong (Peter Hong) int index = 0; 8440c9bd600SJi-Ze Hong (Peter Hong) int status; 845f047d357SJi-Ze Hong (Peter Hong) int i; 8460c9bd600SJi-Ze Hong (Peter Hong) 847cac4cea5SJohan Hovold if (size_bulk_out != F81534_WRITE_BUFFER_SIZE || 848cac4cea5SJohan Hovold size_bulk_in != F81534_MAX_RECEIVE_BLOCK_SIZE) { 849cac4cea5SJohan Hovold dev_err(dev, "unsupported endpoint max packet size\n"); 850cac4cea5SJohan Hovold return -ENODEV; 851cac4cea5SJohan Hovold } 852cac4cea5SJohan Hovold 853f047d357SJi-Ze Hong (Peter Hong) serial_priv = devm_kzalloc(&serial->interface->dev, 854f047d357SJi-Ze Hong (Peter Hong) sizeof(*serial_priv), GFP_KERNEL); 855f047d357SJi-Ze Hong (Peter Hong) if (!serial_priv) 856f047d357SJi-Ze Hong (Peter Hong) return -ENOMEM; 857f047d357SJi-Ze Hong (Peter Hong) 858f047d357SJi-Ze Hong (Peter Hong) usb_set_serial_data(serial, serial_priv); 859f047d357SJi-Ze Hong (Peter Hong) mutex_init(&serial_priv->urb_mutex); 860f047d357SJi-Ze Hong (Peter Hong) 8610c9bd600SJi-Ze Hong (Peter Hong) /* Check had custom setting */ 862f047d357SJi-Ze Hong (Peter Hong) status = f81534_find_config_idx(serial, &serial_priv->setting_idx); 8630c9bd600SJi-Ze Hong (Peter Hong) if (status) { 8640c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, "%s: find idx failed: %d\n", 8650c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 8662f16621bSJohan Hovold return status; 8670c9bd600SJi-Ze Hong (Peter Hong) } 8680c9bd600SJi-Ze Hong (Peter Hong) 8690c9bd600SJi-Ze Hong (Peter Hong) /* 8700c9bd600SJi-Ze Hong (Peter Hong) * We'll read custom data only when data available, otherwise we'll 8710c9bd600SJi-Ze Hong (Peter Hong) * read default value instead. 8720c9bd600SJi-Ze Hong (Peter Hong) */ 873f047d357SJi-Ze Hong (Peter Hong) if (serial_priv->setting_idx != F81534_CUSTOM_NO_CUSTOM_DATA) { 8740c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, 8750c9bd600SJi-Ze Hong (Peter Hong) F81534_CUSTOM_ADDRESS_START + 8760c9bd600SJi-Ze Hong (Peter Hong) F81534_CONF_OFFSET, 877f047d357SJi-Ze Hong (Peter Hong) sizeof(serial_priv->conf_data), 878f047d357SJi-Ze Hong (Peter Hong) serial_priv->conf_data); 8790c9bd600SJi-Ze Hong (Peter Hong) if (status) { 8800c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 8810c9bd600SJi-Ze Hong (Peter Hong) "%s: get custom data failed: %d\n", 8820c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 8832f16621bSJohan Hovold return status; 8840c9bd600SJi-Ze Hong (Peter Hong) } 8850c9bd600SJi-Ze Hong (Peter Hong) 8860c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&serial->interface->dev, 8870c9bd600SJi-Ze Hong (Peter Hong) "%s: read config from block: %d\n", __func__, 888f047d357SJi-Ze Hong (Peter Hong) serial_priv->setting_idx); 8890c9bd600SJi-Ze Hong (Peter Hong) } else { 8900c9bd600SJi-Ze Hong (Peter Hong) /* Read default board setting */ 8910c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_flash(serial, 892f047d357SJi-Ze Hong (Peter Hong) F81534_DEF_CONF_ADDRESS_START, 893f047d357SJi-Ze Hong (Peter Hong) sizeof(serial_priv->conf_data), 894f047d357SJi-Ze Hong (Peter Hong) serial_priv->conf_data); 8950c9bd600SJi-Ze Hong (Peter Hong) if (status) { 8960c9bd600SJi-Ze Hong (Peter Hong) dev_err(&serial->interface->dev, 8970c9bd600SJi-Ze Hong (Peter Hong) "%s: read failed: %d\n", __func__, 8980c9bd600SJi-Ze Hong (Peter Hong) status); 8992f16621bSJohan Hovold return status; 9000c9bd600SJi-Ze Hong (Peter Hong) } 9010c9bd600SJi-Ze Hong (Peter Hong) 9020c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&serial->interface->dev, "%s: read default config\n", 9030c9bd600SJi-Ze Hong (Peter Hong) __func__); 9040c9bd600SJi-Ze Hong (Peter Hong) } 9050c9bd600SJi-Ze Hong (Peter Hong) 9060c9bd600SJi-Ze Hong (Peter Hong) /* New style, find all possible ports */ 9070c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 908bb543ca2SJi-Ze Hong (Peter Hong) if (f81534_check_port_hw_disabled(serial, i)) 909bb543ca2SJi-Ze Hong (Peter Hong) serial_priv->conf_data[i] |= F81534_PORT_UNAVAILABLE; 910bb543ca2SJi-Ze Hong (Peter Hong) 911f047d357SJi-Ze Hong (Peter Hong) if (serial_priv->conf_data[i] & F81534_PORT_UNAVAILABLE) 9120c9bd600SJi-Ze Hong (Peter Hong) continue; 9130c9bd600SJi-Ze Hong (Peter Hong) 9140c9bd600SJi-Ze Hong (Peter Hong) ++num_port; 9150c9bd600SJi-Ze Hong (Peter Hong) } 9160c9bd600SJi-Ze Hong (Peter Hong) 9175e07240aSJohan Hovold if (!num_port) { 9185e07240aSJohan Hovold dev_warn(&serial->interface->dev, 9195e07240aSJohan Hovold "no config found, assuming 4 ports\n"); 9205e07240aSJohan Hovold num_port = 4; /* Nothing found, oldest version IC */ 9215e07240aSJohan Hovold } 9220c9bd600SJi-Ze Hong (Peter Hong) 923f047d357SJi-Ze Hong (Peter Hong) /* Assign phy-to-logic mapping */ 924f047d357SJi-Ze Hong (Peter Hong) for (i = 0; i < F81534_NUM_PORT; ++i) { 925f047d357SJi-Ze Hong (Peter Hong) if (serial_priv->conf_data[i] & F81534_PORT_UNAVAILABLE) 926f047d357SJi-Ze Hong (Peter Hong) continue; 927f047d357SJi-Ze Hong (Peter Hong) 928f047d357SJi-Ze Hong (Peter Hong) serial_priv->tty_idx[i] = index++; 929f047d357SJi-Ze Hong (Peter Hong) dev_dbg(&serial->interface->dev, 930f047d357SJi-Ze Hong (Peter Hong) "%s: phy_num: %d, tty_idx: %d\n", __func__, i, 931f047d357SJi-Ze Hong (Peter Hong) serial_priv->tty_idx[i]); 932f047d357SJi-Ze Hong (Peter Hong) } 933f047d357SJi-Ze Hong (Peter Hong) 934d5ccfce0SJohan Hovold /* 935d5ccfce0SJohan Hovold * Setup bulk-out endpoint multiplexing. All ports share the same 936d5ccfce0SJohan Hovold * bulk-out endpoint. 937d5ccfce0SJohan Hovold */ 938d5ccfce0SJohan Hovold BUILD_BUG_ON(ARRAY_SIZE(epds->bulk_out) < F81534_NUM_PORT); 939d5ccfce0SJohan Hovold 940d5ccfce0SJohan Hovold for (i = 1; i < num_port; ++i) 941d5ccfce0SJohan Hovold epds->bulk_out[i] = epds->bulk_out[0]; 942d5ccfce0SJohan Hovold 943d5ccfce0SJohan Hovold epds->num_bulk_out = num_port; 944d5ccfce0SJohan Hovold 9455e07240aSJohan Hovold return num_port; 9460c9bd600SJi-Ze Hong (Peter Hong) } 9470c9bd600SJi-Ze Hong (Peter Hong) 9480c9bd600SJi-Ze Hong (Peter Hong) static void f81534_set_termios(struct tty_struct *tty, 9490c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port, 950f6d47fe5SIlpo Järvinen const struct ktermios *old_termios) 9510c9bd600SJi-Ze Hong (Peter Hong) { 9520c9bd600SJi-Ze Hong (Peter Hong) u8 new_lcr = 0; 9530c9bd600SJi-Ze Hong (Peter Hong) int status; 9540c9bd600SJi-Ze Hong (Peter Hong) u32 baud; 9553aacac02SJi-Ze Hong (Peter Hong) u32 old_baud; 9560c9bd600SJi-Ze Hong (Peter Hong) 9570c9bd600SJi-Ze Hong (Peter Hong) if (C_BAUD(tty) == B0) 9580c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS); 9590c9bd600SJi-Ze Hong (Peter Hong) else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) 9600c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0); 9610c9bd600SJi-Ze Hong (Peter Hong) 9620c9bd600SJi-Ze Hong (Peter Hong) if (C_PARENB(tty)) { 9630c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_PARITY; 9640c9bd600SJi-Ze Hong (Peter Hong) 9650c9bd600SJi-Ze Hong (Peter Hong) if (!C_PARODD(tty)) 9660c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_EPAR; 9670c9bd600SJi-Ze Hong (Peter Hong) 9680c9bd600SJi-Ze Hong (Peter Hong) if (C_CMSPAR(tty)) 9690c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_SPAR; 9700c9bd600SJi-Ze Hong (Peter Hong) } 9710c9bd600SJi-Ze Hong (Peter Hong) 9720c9bd600SJi-Ze Hong (Peter Hong) if (C_CSTOPB(tty)) 9730c9bd600SJi-Ze Hong (Peter Hong) new_lcr |= UART_LCR_STOP; 9740c9bd600SJi-Ze Hong (Peter Hong) 9755e1440bcSJiri Slaby new_lcr |= UART_LCR_WLEN(tty_get_char_size(tty->termios.c_cflag)); 9760c9bd600SJi-Ze Hong (Peter Hong) 9770c9bd600SJi-Ze Hong (Peter Hong) baud = tty_get_baud_rate(tty); 9780c9bd600SJi-Ze Hong (Peter Hong) if (!baud) 9790c9bd600SJi-Ze Hong (Peter Hong) return; 9800c9bd600SJi-Ze Hong (Peter Hong) 9810c9bd600SJi-Ze Hong (Peter Hong) if (old_termios) 9823aacac02SJi-Ze Hong (Peter Hong) old_baud = tty_termios_baud_rate(old_termios); 9830c9bd600SJi-Ze Hong (Peter Hong) else 9843aacac02SJi-Ze Hong (Peter Hong) old_baud = F81534_DEFAULT_BAUD_RATE; 9850c9bd600SJi-Ze Hong (Peter Hong) 9860c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: baud: %d\n", __func__, baud); 9870c9bd600SJi-Ze Hong (Peter Hong) 9883aacac02SJi-Ze Hong (Peter Hong) status = f81534_set_port_config(port, tty, baud, old_baud, new_lcr); 9890c9bd600SJi-Ze Hong (Peter Hong) if (status < 0) { 9900c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: set port config failed: %d\n", 9910c9bd600SJi-Ze Hong (Peter Hong) __func__, status); 9920c9bd600SJi-Ze Hong (Peter Hong) } 9930c9bd600SJi-Ze Hong (Peter Hong) } 9940c9bd600SJi-Ze Hong (Peter Hong) 9950c9bd600SJi-Ze Hong (Peter Hong) static int f81534_submit_read_urb(struct usb_serial *serial, gfp_t flags) 9960c9bd600SJi-Ze Hong (Peter Hong) { 9970c9bd600SJi-Ze Hong (Peter Hong) return usb_serial_generic_submit_read_urbs(serial->port[0], flags); 9980c9bd600SJi-Ze Hong (Peter Hong) } 9990c9bd600SJi-Ze Hong (Peter Hong) 10000c9bd600SJi-Ze Hong (Peter Hong) static void f81534_msr_changed(struct usb_serial_port *port, u8 msr) 10010c9bd600SJi-Ze Hong (Peter Hong) { 10020c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 10030c9bd600SJi-Ze Hong (Peter Hong) struct tty_struct *tty; 10040c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 10050c9bd600SJi-Ze Hong (Peter Hong) u8 old_msr; 10060c9bd600SJi-Ze Hong (Peter Hong) 10070c9bd600SJi-Ze Hong (Peter Hong) if (!(msr & UART_MSR_ANY_DELTA)) 10080c9bd600SJi-Ze Hong (Peter Hong) return; 10090c9bd600SJi-Ze Hong (Peter Hong) 10100c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port_priv->msr_lock, flags); 10110c9bd600SJi-Ze Hong (Peter Hong) old_msr = port_priv->shadow_msr; 10120c9bd600SJi-Ze Hong (Peter Hong) port_priv->shadow_msr = msr; 10130c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port_priv->msr_lock, flags); 10140c9bd600SJi-Ze Hong (Peter Hong) 10150c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: MSR from %02x to %02x\n", __func__, old_msr, 10160c9bd600SJi-Ze Hong (Peter Hong) msr); 10170c9bd600SJi-Ze Hong (Peter Hong) 10180c9bd600SJi-Ze Hong (Peter Hong) /* Update input line counters */ 10190c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_DCTS) 10200c9bd600SJi-Ze Hong (Peter Hong) port->icount.cts++; 10210c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_DDSR) 10220c9bd600SJi-Ze Hong (Peter Hong) port->icount.dsr++; 10230c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_DDCD) 10240c9bd600SJi-Ze Hong (Peter Hong) port->icount.dcd++; 10250c9bd600SJi-Ze Hong (Peter Hong) if (msr & UART_MSR_TERI) 10260c9bd600SJi-Ze Hong (Peter Hong) port->icount.rng++; 10270c9bd600SJi-Ze Hong (Peter Hong) 10280c9bd600SJi-Ze Hong (Peter Hong) wake_up_interruptible(&port->port.delta_msr_wait); 10290c9bd600SJi-Ze Hong (Peter Hong) 10300c9bd600SJi-Ze Hong (Peter Hong) if (!(msr & UART_MSR_DDCD)) 10310c9bd600SJi-Ze Hong (Peter Hong) return; 10320c9bd600SJi-Ze Hong (Peter Hong) 10330c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: DCD Changed: phy_num: %d from %x to %x\n", 10340c9bd600SJi-Ze Hong (Peter Hong) __func__, port_priv->phy_num, old_msr, msr); 10350c9bd600SJi-Ze Hong (Peter Hong) 10360c9bd600SJi-Ze Hong (Peter Hong) tty = tty_port_tty_get(&port->port); 10370c9bd600SJi-Ze Hong (Peter Hong) if (!tty) 10380c9bd600SJi-Ze Hong (Peter Hong) return; 10390c9bd600SJi-Ze Hong (Peter Hong) 10400c9bd600SJi-Ze Hong (Peter Hong) usb_serial_handle_dcd_change(port, tty, msr & UART_MSR_DCD); 10410c9bd600SJi-Ze Hong (Peter Hong) tty_kref_put(tty); 10420c9bd600SJi-Ze Hong (Peter Hong) } 10430c9bd600SJi-Ze Hong (Peter Hong) 10440c9bd600SJi-Ze Hong (Peter Hong) static int f81534_read_msr(struct usb_serial_port *port) 10450c9bd600SJi-Ze Hong (Peter Hong) { 10460c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 10470c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 10480c9bd600SJi-Ze Hong (Peter Hong) int status; 10490c9bd600SJi-Ze Hong (Peter Hong) u8 msr; 10500c9bd600SJi-Ze Hong (Peter Hong) 10510c9bd600SJi-Ze Hong (Peter Hong) /* Get MSR initial value */ 10520c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_port_register(port, F81534_MODEM_STATUS_REG, &msr); 10530c9bd600SJi-Ze Hong (Peter Hong) if (status) 10540c9bd600SJi-Ze Hong (Peter Hong) return status; 10550c9bd600SJi-Ze Hong (Peter Hong) 10560c9bd600SJi-Ze Hong (Peter Hong) /* Force update current state */ 10570c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port_priv->msr_lock, flags); 10580c9bd600SJi-Ze Hong (Peter Hong) port_priv->shadow_msr = msr; 10590c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port_priv->msr_lock, flags); 10600c9bd600SJi-Ze Hong (Peter Hong) 10610c9bd600SJi-Ze Hong (Peter Hong) return 0; 10620c9bd600SJi-Ze Hong (Peter Hong) } 10630c9bd600SJi-Ze Hong (Peter Hong) 10640c9bd600SJi-Ze Hong (Peter Hong) static int f81534_open(struct tty_struct *tty, struct usb_serial_port *port) 10650c9bd600SJi-Ze Hong (Peter Hong) { 10660c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 10670c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(port->serial); 10680c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 10690c9bd600SJi-Ze Hong (Peter Hong) int status; 10700c9bd600SJi-Ze Hong (Peter Hong) 10710c9bd600SJi-Ze Hong (Peter Hong) status = f81534_set_port_register(port, 10720c9bd600SJi-Ze Hong (Peter Hong) F81534_FIFO_CONTROL_REG, UART_FCR_ENABLE_FIFO | 10730c9bd600SJi-Ze Hong (Peter Hong) UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); 10740c9bd600SJi-Ze Hong (Peter Hong) if (status) { 10750c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: Clear FIFO failed: %d\n", __func__, 10760c9bd600SJi-Ze Hong (Peter Hong) status); 10770c9bd600SJi-Ze Hong (Peter Hong) return status; 10780c9bd600SJi-Ze Hong (Peter Hong) } 10790c9bd600SJi-Ze Hong (Peter Hong) 10800c9bd600SJi-Ze Hong (Peter Hong) if (tty) 10810c9bd600SJi-Ze Hong (Peter Hong) f81534_set_termios(tty, port, NULL); 10820c9bd600SJi-Ze Hong (Peter Hong) 10830c9bd600SJi-Ze Hong (Peter Hong) status = f81534_read_msr(port); 10840c9bd600SJi-Ze Hong (Peter Hong) if (status) 10850c9bd600SJi-Ze Hong (Peter Hong) return status; 10860c9bd600SJi-Ze Hong (Peter Hong) 10870c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&serial_priv->urb_mutex); 10880c9bd600SJi-Ze Hong (Peter Hong) 10890c9bd600SJi-Ze Hong (Peter Hong) /* Submit Read URBs for first port opened */ 10900c9bd600SJi-Ze Hong (Peter Hong) if (!serial_priv->opened_port) { 10910c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_read_urb(port->serial, GFP_KERNEL); 10920c9bd600SJi-Ze Hong (Peter Hong) if (status) 10930c9bd600SJi-Ze Hong (Peter Hong) goto exit; 10940c9bd600SJi-Ze Hong (Peter Hong) } 10950c9bd600SJi-Ze Hong (Peter Hong) 10960c9bd600SJi-Ze Hong (Peter Hong) serial_priv->opened_port++; 10970c9bd600SJi-Ze Hong (Peter Hong) 10980c9bd600SJi-Ze Hong (Peter Hong) exit: 10990c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 11000c9bd600SJi-Ze Hong (Peter Hong) 11010c9bd600SJi-Ze Hong (Peter Hong) set_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 11020c9bd600SJi-Ze Hong (Peter Hong) return status; 11030c9bd600SJi-Ze Hong (Peter Hong) } 11040c9bd600SJi-Ze Hong (Peter Hong) 11050c9bd600SJi-Ze Hong (Peter Hong) static void f81534_close(struct usb_serial_port *port) 11060c9bd600SJi-Ze Hong (Peter Hong) { 11070c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 11080c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(port->serial); 11090c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port0 = port->serial->port[0]; 11100c9bd600SJi-Ze Hong (Peter Hong) unsigned long flags; 11110c9bd600SJi-Ze Hong (Peter Hong) size_t i; 11120c9bd600SJi-Ze Hong (Peter Hong) 11130c9bd600SJi-Ze Hong (Peter Hong) usb_kill_urb(port->write_urbs[0]); 11140c9bd600SJi-Ze Hong (Peter Hong) 11150c9bd600SJi-Ze Hong (Peter Hong) spin_lock_irqsave(&port->lock, flags); 11160c9bd600SJi-Ze Hong (Peter Hong) kfifo_reset_out(&port->write_fifo); 11170c9bd600SJi-Ze Hong (Peter Hong) spin_unlock_irqrestore(&port->lock, flags); 11180c9bd600SJi-Ze Hong (Peter Hong) 11190c9bd600SJi-Ze Hong (Peter Hong) /* Kill Read URBs when final port closed */ 11200c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&serial_priv->urb_mutex); 11210c9bd600SJi-Ze Hong (Peter Hong) serial_priv->opened_port--; 11220c9bd600SJi-Ze Hong (Peter Hong) 11230c9bd600SJi-Ze Hong (Peter Hong) if (!serial_priv->opened_port) { 11240c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < ARRAY_SIZE(port0->read_urbs); ++i) 11250c9bd600SJi-Ze Hong (Peter Hong) usb_kill_urb(port0->read_urbs[i]); 11260c9bd600SJi-Ze Hong (Peter Hong) } 11270c9bd600SJi-Ze Hong (Peter Hong) 11280c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 11290c9bd600SJi-Ze Hong (Peter Hong) } 11300c9bd600SJi-Ze Hong (Peter Hong) 113101fd45f6SJohan Hovold static void f81534_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) 11320c9bd600SJi-Ze Hong (Peter Hong) { 1133c8f97e77SAl Viro struct usb_serial_port *port = tty->driver_data; 11340c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv; 11350c9bd600SJi-Ze Hong (Peter Hong) 11360c9bd600SJi-Ze Hong (Peter Hong) port_priv = usb_get_serial_port_data(port); 11370c9bd600SJi-Ze Hong (Peter Hong) 1138c8f97e77SAl Viro ss->baud_base = port_priv->baud_base; 11390c9bd600SJi-Ze Hong (Peter Hong) } 11400c9bd600SJi-Ze Hong (Peter Hong) 11410c9bd600SJi-Ze Hong (Peter Hong) static void f81534_process_per_serial_block(struct usb_serial_port *port, 11420c9bd600SJi-Ze Hong (Peter Hong) u8 *data) 11430c9bd600SJi-Ze Hong (Peter Hong) { 11440c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 11450c9bd600SJi-Ze Hong (Peter Hong) int phy_num = data[0]; 11460c9bd600SJi-Ze Hong (Peter Hong) size_t read_size = 0; 11470c9bd600SJi-Ze Hong (Peter Hong) size_t i; 11480c9bd600SJi-Ze Hong (Peter Hong) char tty_flag; 11490c9bd600SJi-Ze Hong (Peter Hong) int status; 11500c9bd600SJi-Ze Hong (Peter Hong) u8 lsr; 11510c9bd600SJi-Ze Hong (Peter Hong) 11520c9bd600SJi-Ze Hong (Peter Hong) /* 11530c9bd600SJi-Ze Hong (Peter Hong) * The block layout is 128 Bytes 11540c9bd600SJi-Ze Hong (Peter Hong) * index 0: port phy idx (e.g., 0,1,2,3), 11550c9bd600SJi-Ze Hong (Peter Hong) * index 1: It's could be 11560c9bd600SJi-Ze Hong (Peter Hong) * F81534_TOKEN_RECEIVE 11570c9bd600SJi-Ze Hong (Peter Hong) * F81534_TOKEN_TX_EMPTY 11580c9bd600SJi-Ze Hong (Peter Hong) * F81534_TOKEN_MSR_CHANGE 11590c9bd600SJi-Ze Hong (Peter Hong) * index 2: serial in size (data+lsr, must be even) 11600c9bd600SJi-Ze Hong (Peter Hong) * meaningful for F81534_TOKEN_RECEIVE only 11610c9bd600SJi-Ze Hong (Peter Hong) * index 3: current MSR with this device 11620c9bd600SJi-Ze Hong (Peter Hong) * index 4~127: serial in data block (data+lsr, must be even) 11630c9bd600SJi-Ze Hong (Peter Hong) */ 11640c9bd600SJi-Ze Hong (Peter Hong) switch (data[1]) { 11650c9bd600SJi-Ze Hong (Peter Hong) case F81534_TOKEN_TX_EMPTY: 11660c9bd600SJi-Ze Hong (Peter Hong) set_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 11670c9bd600SJi-Ze Hong (Peter Hong) 11680c9bd600SJi-Ze Hong (Peter Hong) /* Try to submit writer */ 11690c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_writer(port, GFP_ATOMIC); 11700c9bd600SJi-Ze Hong (Peter Hong) if (status) 11710c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed\n", __func__); 11720c9bd600SJi-Ze Hong (Peter Hong) return; 11730c9bd600SJi-Ze Hong (Peter Hong) 11740c9bd600SJi-Ze Hong (Peter Hong) case F81534_TOKEN_MSR_CHANGE: 11750c9bd600SJi-Ze Hong (Peter Hong) f81534_msr_changed(port, data[3]); 11760c9bd600SJi-Ze Hong (Peter Hong) return; 11770c9bd600SJi-Ze Hong (Peter Hong) 11780c9bd600SJi-Ze Hong (Peter Hong) case F81534_TOKEN_RECEIVE: 11790c9bd600SJi-Ze Hong (Peter Hong) read_size = data[2]; 11800c9bd600SJi-Ze Hong (Peter Hong) if (read_size > F81534_MAX_RX_SIZE) { 11810c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, 11820c9bd600SJi-Ze Hong (Peter Hong) "%s: phy: %d read_size: %zu larger than: %d\n", 11830c9bd600SJi-Ze Hong (Peter Hong) __func__, phy_num, read_size, 11840c9bd600SJi-Ze Hong (Peter Hong) F81534_MAX_RX_SIZE); 11850c9bd600SJi-Ze Hong (Peter Hong) return; 11860c9bd600SJi-Ze Hong (Peter Hong) } 11870c9bd600SJi-Ze Hong (Peter Hong) 11880c9bd600SJi-Ze Hong (Peter Hong) break; 11890c9bd600SJi-Ze Hong (Peter Hong) 11900c9bd600SJi-Ze Hong (Peter Hong) default: 11910c9bd600SJi-Ze Hong (Peter Hong) dev_warn(&port->dev, "%s: unknown token: %02x\n", __func__, 11920c9bd600SJi-Ze Hong (Peter Hong) data[1]); 11930c9bd600SJi-Ze Hong (Peter Hong) return; 11940c9bd600SJi-Ze Hong (Peter Hong) } 11950c9bd600SJi-Ze Hong (Peter Hong) 11960c9bd600SJi-Ze Hong (Peter Hong) for (i = 4; i < 4 + read_size; i += 2) { 11970c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_NORMAL; 11980c9bd600SJi-Ze Hong (Peter Hong) lsr = data[i + 1]; 11990c9bd600SJi-Ze Hong (Peter Hong) 12000c9bd600SJi-Ze Hong (Peter Hong) if (lsr & UART_LSR_BRK_ERROR_BITS) { 12010c9bd600SJi-Ze Hong (Peter Hong) if (lsr & UART_LSR_BI) { 12020c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_BREAK; 12030c9bd600SJi-Ze Hong (Peter Hong) port->icount.brk++; 12040c9bd600SJi-Ze Hong (Peter Hong) usb_serial_handle_break(port); 12050c9bd600SJi-Ze Hong (Peter Hong) } else if (lsr & UART_LSR_PE) { 12060c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_PARITY; 12070c9bd600SJi-Ze Hong (Peter Hong) port->icount.parity++; 12080c9bd600SJi-Ze Hong (Peter Hong) } else if (lsr & UART_LSR_FE) { 12090c9bd600SJi-Ze Hong (Peter Hong) tty_flag = TTY_FRAME; 12100c9bd600SJi-Ze Hong (Peter Hong) port->icount.frame++; 12110c9bd600SJi-Ze Hong (Peter Hong) } 12120c9bd600SJi-Ze Hong (Peter Hong) 12130c9bd600SJi-Ze Hong (Peter Hong) if (lsr & UART_LSR_OE) { 12140c9bd600SJi-Ze Hong (Peter Hong) port->icount.overrun++; 12150c9bd600SJi-Ze Hong (Peter Hong) tty_insert_flip_char(&port->port, 0, 12160c9bd600SJi-Ze Hong (Peter Hong) TTY_OVERRUN); 12170c9bd600SJi-Ze Hong (Peter Hong) } 1218dea744baSJi-Ze Hong (Peter Hong) 1219dea744baSJi-Ze Hong (Peter Hong) schedule_work(&port_priv->lsr_work); 12200c9bd600SJi-Ze Hong (Peter Hong) } 12210c9bd600SJi-Ze Hong (Peter Hong) 122237ae2315SJohan Hovold if (port->sysrq) { 12230c9bd600SJi-Ze Hong (Peter Hong) if (usb_serial_handle_sysrq_char(port, data[i])) 12240c9bd600SJi-Ze Hong (Peter Hong) continue; 12250c9bd600SJi-Ze Hong (Peter Hong) } 12260c9bd600SJi-Ze Hong (Peter Hong) 12270c9bd600SJi-Ze Hong (Peter Hong) tty_insert_flip_char(&port->port, data[i], tty_flag); 12280c9bd600SJi-Ze Hong (Peter Hong) } 12290c9bd600SJi-Ze Hong (Peter Hong) 12300c9bd600SJi-Ze Hong (Peter Hong) tty_flip_buffer_push(&port->port); 12310c9bd600SJi-Ze Hong (Peter Hong) } 12320c9bd600SJi-Ze Hong (Peter Hong) 12330c9bd600SJi-Ze Hong (Peter Hong) static void f81534_process_read_urb(struct urb *urb) 12340c9bd600SJi-Ze Hong (Peter Hong) { 12350c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv; 12360c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port; 12370c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial *serial; 12380c9bd600SJi-Ze Hong (Peter Hong) u8 *buf; 12390c9bd600SJi-Ze Hong (Peter Hong) int phy_port_num; 12400c9bd600SJi-Ze Hong (Peter Hong) int tty_port_num; 12410c9bd600SJi-Ze Hong (Peter Hong) size_t i; 12420c9bd600SJi-Ze Hong (Peter Hong) 12430c9bd600SJi-Ze Hong (Peter Hong) if (!urb->actual_length || 12440c9bd600SJi-Ze Hong (Peter Hong) urb->actual_length % F81534_RECEIVE_BLOCK_SIZE) { 12450c9bd600SJi-Ze Hong (Peter Hong) return; 12460c9bd600SJi-Ze Hong (Peter Hong) } 12470c9bd600SJi-Ze Hong (Peter Hong) 12480c9bd600SJi-Ze Hong (Peter Hong) port = urb->context; 12490c9bd600SJi-Ze Hong (Peter Hong) serial = port->serial; 12500c9bd600SJi-Ze Hong (Peter Hong) buf = urb->transfer_buffer; 12510c9bd600SJi-Ze Hong (Peter Hong) serial_priv = usb_get_serial_data(serial); 12520c9bd600SJi-Ze Hong (Peter Hong) 12530c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < urb->actual_length; i += F81534_RECEIVE_BLOCK_SIZE) { 12540c9bd600SJi-Ze Hong (Peter Hong) phy_port_num = buf[i]; 12550c9bd600SJi-Ze Hong (Peter Hong) if (phy_port_num >= F81534_NUM_PORT) { 12560c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, 12570c9bd600SJi-Ze Hong (Peter Hong) "%s: phy_port_num: %d larger than: %d\n", 12580c9bd600SJi-Ze Hong (Peter Hong) __func__, phy_port_num, F81534_NUM_PORT); 12590c9bd600SJi-Ze Hong (Peter Hong) continue; 12600c9bd600SJi-Ze Hong (Peter Hong) } 12610c9bd600SJi-Ze Hong (Peter Hong) 12620c9bd600SJi-Ze Hong (Peter Hong) tty_port_num = serial_priv->tty_idx[phy_port_num]; 12630c9bd600SJi-Ze Hong (Peter Hong) port = serial->port[tty_port_num]; 12640c9bd600SJi-Ze Hong (Peter Hong) 12650c9bd600SJi-Ze Hong (Peter Hong) if (tty_port_initialized(&port->port)) 12660c9bd600SJi-Ze Hong (Peter Hong) f81534_process_per_serial_block(port, &buf[i]); 12670c9bd600SJi-Ze Hong (Peter Hong) } 12680c9bd600SJi-Ze Hong (Peter Hong) } 12690c9bd600SJi-Ze Hong (Peter Hong) 12700c9bd600SJi-Ze Hong (Peter Hong) static void f81534_write_usb_callback(struct urb *urb) 12710c9bd600SJi-Ze Hong (Peter Hong) { 12720c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = urb->context; 12730c9bd600SJi-Ze Hong (Peter Hong) 12740c9bd600SJi-Ze Hong (Peter Hong) switch (urb->status) { 12750c9bd600SJi-Ze Hong (Peter Hong) case 0: 12760c9bd600SJi-Ze Hong (Peter Hong) break; 12770c9bd600SJi-Ze Hong (Peter Hong) case -ENOENT: 12780c9bd600SJi-Ze Hong (Peter Hong) case -ECONNRESET: 12790c9bd600SJi-Ze Hong (Peter Hong) case -ESHUTDOWN: 12800c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s - urb stopped: %d\n", 12810c9bd600SJi-Ze Hong (Peter Hong) __func__, urb->status); 12820c9bd600SJi-Ze Hong (Peter Hong) return; 12830c9bd600SJi-Ze Hong (Peter Hong) case -EPIPE: 12840c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s - urb stopped: %d\n", 12850c9bd600SJi-Ze Hong (Peter Hong) __func__, urb->status); 12860c9bd600SJi-Ze Hong (Peter Hong) return; 12870c9bd600SJi-Ze Hong (Peter Hong) default: 12880c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s - nonzero urb status: %d\n", 12890c9bd600SJi-Ze Hong (Peter Hong) __func__, urb->status); 12900c9bd600SJi-Ze Hong (Peter Hong) break; 12910c9bd600SJi-Ze Hong (Peter Hong) } 12920c9bd600SJi-Ze Hong (Peter Hong) } 12930c9bd600SJi-Ze Hong (Peter Hong) 1294dea744baSJi-Ze Hong (Peter Hong) static void f81534_lsr_worker(struct work_struct *work) 1295dea744baSJi-Ze Hong (Peter Hong) { 1296dea744baSJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv; 1297dea744baSJi-Ze Hong (Peter Hong) struct usb_serial_port *port; 1298dea744baSJi-Ze Hong (Peter Hong) int status; 1299dea744baSJi-Ze Hong (Peter Hong) u8 tmp; 1300dea744baSJi-Ze Hong (Peter Hong) 1301dea744baSJi-Ze Hong (Peter Hong) port_priv = container_of(work, struct f81534_port_private, lsr_work); 1302dea744baSJi-Ze Hong (Peter Hong) port = port_priv->port; 1303dea744baSJi-Ze Hong (Peter Hong) 1304dea744baSJi-Ze Hong (Peter Hong) status = f81534_get_port_register(port, F81534_LINE_STATUS_REG, &tmp); 1305dea744baSJi-Ze Hong (Peter Hong) if (status) 1306dea744baSJi-Ze Hong (Peter Hong) dev_warn(&port->dev, "read LSR failed: %d\n", status); 1307dea744baSJi-Ze Hong (Peter Hong) } 1308dea744baSJi-Ze Hong (Peter Hong) 1309138651e1SJi-Ze Hong (Peter Hong) static int f81534_set_port_output_pin(struct usb_serial_port *port) 1310138651e1SJi-Ze Hong (Peter Hong) { 1311138651e1SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv; 1312138651e1SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv; 1313138651e1SJi-Ze Hong (Peter Hong) struct usb_serial *serial; 1314138651e1SJi-Ze Hong (Peter Hong) const struct f81534_port_out_pin *pins; 1315138651e1SJi-Ze Hong (Peter Hong) int status; 1316138651e1SJi-Ze Hong (Peter Hong) int i; 1317138651e1SJi-Ze Hong (Peter Hong) u8 value; 1318138651e1SJi-Ze Hong (Peter Hong) u8 idx; 1319138651e1SJi-Ze Hong (Peter Hong) 1320138651e1SJi-Ze Hong (Peter Hong) serial = port->serial; 1321138651e1SJi-Ze Hong (Peter Hong) serial_priv = usb_get_serial_data(serial); 1322138651e1SJi-Ze Hong (Peter Hong) port_priv = usb_get_serial_port_data(port); 1323138651e1SJi-Ze Hong (Peter Hong) 1324ab60075fSJi-Ze Hong (Peter Hong) idx = F81534_CONF_INIT_GPIO_OFFSET + port_priv->phy_num; 1325138651e1SJi-Ze Hong (Peter Hong) value = serial_priv->conf_data[idx]; 1326ab60075fSJi-Ze Hong (Peter Hong) if (value >= F81534_CONF_GPIO_SHUTDOWN) { 1327ab60075fSJi-Ze Hong (Peter Hong) /* 1328ab60075fSJi-Ze Hong (Peter Hong) * Newer IC configure will make transceiver in shutdown mode on 1329ab60075fSJi-Ze Hong (Peter Hong) * initial power on. We need enable it before using UARTs. 1330ab60075fSJi-Ze Hong (Peter Hong) */ 1331ab60075fSJi-Ze Hong (Peter Hong) idx = F81534_CONF_WORK_GPIO_OFFSET + port_priv->phy_num; 1332ab60075fSJi-Ze Hong (Peter Hong) value = serial_priv->conf_data[idx]; 1333ab60075fSJi-Ze Hong (Peter Hong) if (value >= F81534_CONF_GPIO_SHUTDOWN) 1334ab60075fSJi-Ze Hong (Peter Hong) value = F81534_CONF_GPIO_RS232; 1335ab60075fSJi-Ze Hong (Peter Hong) } 1336ab60075fSJi-Ze Hong (Peter Hong) 1337138651e1SJi-Ze Hong (Peter Hong) pins = &f81534_port_out_pins[port_priv->phy_num]; 1338138651e1SJi-Ze Hong (Peter Hong) 1339138651e1SJi-Ze Hong (Peter Hong) for (i = 0; i < ARRAY_SIZE(pins->pin); ++i) { 1340138651e1SJi-Ze Hong (Peter Hong) status = f81534_set_mask_register(serial, 1341138651e1SJi-Ze Hong (Peter Hong) pins->pin[i].reg_addr, pins->pin[i].reg_mask, 1342138651e1SJi-Ze Hong (Peter Hong) value & BIT(i) ? pins->pin[i].reg_mask : 0); 1343138651e1SJi-Ze Hong (Peter Hong) if (status) 1344138651e1SJi-Ze Hong (Peter Hong) return status; 1345138651e1SJi-Ze Hong (Peter Hong) } 1346138651e1SJi-Ze Hong (Peter Hong) 1347138651e1SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "Output pin (M0/M1/M2): %d\n", value); 1348138651e1SJi-Ze Hong (Peter Hong) return 0; 1349138651e1SJi-Ze Hong (Peter Hong) } 1350138651e1SJi-Ze Hong (Peter Hong) 13510c9bd600SJi-Ze Hong (Peter Hong) static int f81534_port_probe(struct usb_serial_port *port) 13520c9bd600SJi-Ze Hong (Peter Hong) { 1353ee0309b4SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv; 13540c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv; 135542715763SGeert Uytterhoeven int ret; 1356ee0309b4SJi-Ze Hong (Peter Hong) u8 value; 13570c9bd600SJi-Ze Hong (Peter Hong) 1358ee0309b4SJi-Ze Hong (Peter Hong) serial_priv = usb_get_serial_data(port->serial); 13590c9bd600SJi-Ze Hong (Peter Hong) port_priv = devm_kzalloc(&port->dev, sizeof(*port_priv), GFP_KERNEL); 13600c9bd600SJi-Ze Hong (Peter Hong) if (!port_priv) 13610c9bd600SJi-Ze Hong (Peter Hong) return -ENOMEM; 13620c9bd600SJi-Ze Hong (Peter Hong) 1363d1c48227SJi-Ze Hong (Peter Hong) /* 1364d1c48227SJi-Ze Hong (Peter Hong) * We'll make tx frame error when baud rate from 384~500kps. So we'll 1365d1c48227SJi-Ze Hong (Peter Hong) * delay all tx data frame with 1bit. 1366d1c48227SJi-Ze Hong (Peter Hong) */ 1367d1c48227SJi-Ze Hong (Peter Hong) port_priv->shadow_clk = F81534_UART_EN | F81534_CLK_TX_DELAY_1BIT; 13680c9bd600SJi-Ze Hong (Peter Hong) spin_lock_init(&port_priv->msr_lock); 13690c9bd600SJi-Ze Hong (Peter Hong) mutex_init(&port_priv->mcr_mutex); 13707c36e6e1SJi-Ze Hong (Peter Hong) mutex_init(&port_priv->lcr_mutex); 1371dea744baSJi-Ze Hong (Peter Hong) INIT_WORK(&port_priv->lsr_work, f81534_lsr_worker); 13720c9bd600SJi-Ze Hong (Peter Hong) 13730c9bd600SJi-Ze Hong (Peter Hong) /* Assign logic-to-phy mapping */ 137442715763SGeert Uytterhoeven ret = f81534_logic_to_phy_port(port->serial, port); 137542715763SGeert Uytterhoeven if (ret < 0) 137642715763SGeert Uytterhoeven return ret; 13770c9bd600SJi-Ze Hong (Peter Hong) 137842715763SGeert Uytterhoeven port_priv->phy_num = ret; 1379dea744baSJi-Ze Hong (Peter Hong) port_priv->port = port; 13800c9bd600SJi-Ze Hong (Peter Hong) usb_set_serial_port_data(port, port_priv); 13810c9bd600SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "%s: port_number: %d, phy_num: %d\n", __func__, 13820c9bd600SJi-Ze Hong (Peter Hong) port->port_number, port_priv->phy_num); 13830c9bd600SJi-Ze Hong (Peter Hong) 1384dea744baSJi-Ze Hong (Peter Hong) /* 1385dea744baSJi-Ze Hong (Peter Hong) * The F81532/534 will hang-up when enable LSR interrupt in IER and 1386dea744baSJi-Ze Hong (Peter Hong) * occur data overrun. So we'll disable the LSR interrupt in probe() 1387dea744baSJi-Ze Hong (Peter Hong) * and submit the LSR worker to clear LSR state when reported LSR error 1388dea744baSJi-Ze Hong (Peter Hong) * bit with bulk-in data in f81534_process_per_serial_block(). 1389dea744baSJi-Ze Hong (Peter Hong) */ 1390dea744baSJi-Ze Hong (Peter Hong) ret = f81534_set_port_register(port, F81534_INTERRUPT_ENABLE_REG, 1391dea744baSJi-Ze Hong (Peter Hong) UART_IER_RDI | UART_IER_THRI | UART_IER_MSI); 1392dea744baSJi-Ze Hong (Peter Hong) if (ret) 1393dea744baSJi-Ze Hong (Peter Hong) return ret; 1394dea744baSJi-Ze Hong (Peter Hong) 1395ee0309b4SJi-Ze Hong (Peter Hong) value = serial_priv->conf_data[port_priv->phy_num]; 1396ee0309b4SJi-Ze Hong (Peter Hong) switch (value & F81534_PORT_CONF_MODE_MASK) { 1397ee0309b4SJi-Ze Hong (Peter Hong) case F81534_PORT_CONF_RS485_INVERT: 1398ee0309b4SJi-Ze Hong (Peter Hong) port_priv->shadow_clk |= F81534_CLK_RS485_MODE | 1399ee0309b4SJi-Ze Hong (Peter Hong) F81534_CLK_RS485_INVERT; 1400ee0309b4SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "RS485 invert mode\n"); 1401ee0309b4SJi-Ze Hong (Peter Hong) break; 1402ee0309b4SJi-Ze Hong (Peter Hong) case F81534_PORT_CONF_RS485: 1403ee0309b4SJi-Ze Hong (Peter Hong) port_priv->shadow_clk |= F81534_CLK_RS485_MODE; 1404ee0309b4SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "RS485 mode\n"); 1405ee0309b4SJi-Ze Hong (Peter Hong) break; 1406ee0309b4SJi-Ze Hong (Peter Hong) 1407ee0309b4SJi-Ze Hong (Peter Hong) default: 1408ee0309b4SJi-Ze Hong (Peter Hong) case F81534_PORT_CONF_RS232: 1409ee0309b4SJi-Ze Hong (Peter Hong) dev_dbg(&port->dev, "RS232 mode\n"); 1410ee0309b4SJi-Ze Hong (Peter Hong) break; 1411ee0309b4SJi-Ze Hong (Peter Hong) } 1412ee0309b4SJi-Ze Hong (Peter Hong) 1413138651e1SJi-Ze Hong (Peter Hong) return f81534_set_port_output_pin(port); 1414dea744baSJi-Ze Hong (Peter Hong) } 1415dea744baSJi-Ze Hong (Peter Hong) 1416c5d1448fSUwe Kleine-König static void f81534_port_remove(struct usb_serial_port *port) 1417dea744baSJi-Ze Hong (Peter Hong) { 1418dea744baSJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 1419dea744baSJi-Ze Hong (Peter Hong) 1420dea744baSJi-Ze Hong (Peter Hong) flush_work(&port_priv->lsr_work); 14210c9bd600SJi-Ze Hong (Peter Hong) } 14220c9bd600SJi-Ze Hong (Peter Hong) 14230c9bd600SJi-Ze Hong (Peter Hong) static int f81534_tiocmget(struct tty_struct *tty) 14240c9bd600SJi-Ze Hong (Peter Hong) { 14250c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = tty->driver_data; 14260c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 14270c9bd600SJi-Ze Hong (Peter Hong) int status; 14280c9bd600SJi-Ze Hong (Peter Hong) int r; 14290c9bd600SJi-Ze Hong (Peter Hong) u8 msr; 14300c9bd600SJi-Ze Hong (Peter Hong) u8 mcr; 14310c9bd600SJi-Ze Hong (Peter Hong) 14320c9bd600SJi-Ze Hong (Peter Hong) /* Read current MSR from device */ 14330c9bd600SJi-Ze Hong (Peter Hong) status = f81534_get_port_register(port, F81534_MODEM_STATUS_REG, &msr); 14340c9bd600SJi-Ze Hong (Peter Hong) if (status) 14350c9bd600SJi-Ze Hong (Peter Hong) return status; 14360c9bd600SJi-Ze Hong (Peter Hong) 14370c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&port_priv->mcr_mutex); 14380c9bd600SJi-Ze Hong (Peter Hong) mcr = port_priv->shadow_mcr; 14390c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&port_priv->mcr_mutex); 14400c9bd600SJi-Ze Hong (Peter Hong) 14410c9bd600SJi-Ze Hong (Peter Hong) r = (mcr & UART_MCR_DTR ? TIOCM_DTR : 0) | 14420c9bd600SJi-Ze Hong (Peter Hong) (mcr & UART_MCR_RTS ? TIOCM_RTS : 0) | 14430c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_CTS ? TIOCM_CTS : 0) | 14440c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_DCD ? TIOCM_CAR : 0) | 14450c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_RI ? TIOCM_RI : 0) | 14460c9bd600SJi-Ze Hong (Peter Hong) (msr & UART_MSR_DSR ? TIOCM_DSR : 0); 14470c9bd600SJi-Ze Hong (Peter Hong) 14480c9bd600SJi-Ze Hong (Peter Hong) return r; 14490c9bd600SJi-Ze Hong (Peter Hong) } 14500c9bd600SJi-Ze Hong (Peter Hong) 14510c9bd600SJi-Ze Hong (Peter Hong) static int f81534_tiocmset(struct tty_struct *tty, unsigned int set, 14520c9bd600SJi-Ze Hong (Peter Hong) unsigned int clear) 14530c9bd600SJi-Ze Hong (Peter Hong) { 14540c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port = tty->driver_data; 14550c9bd600SJi-Ze Hong (Peter Hong) 14560c9bd600SJi-Ze Hong (Peter Hong) return f81534_update_mctrl(port, set, clear); 14570c9bd600SJi-Ze Hong (Peter Hong) } 14580c9bd600SJi-Ze Hong (Peter Hong) 14590c9bd600SJi-Ze Hong (Peter Hong) static void f81534_dtr_rts(struct usb_serial_port *port, int on) 14600c9bd600SJi-Ze Hong (Peter Hong) { 14610c9bd600SJi-Ze Hong (Peter Hong) if (on) 14620c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, TIOCM_DTR | TIOCM_RTS, 0); 14630c9bd600SJi-Ze Hong (Peter Hong) else 14640c9bd600SJi-Ze Hong (Peter Hong) f81534_update_mctrl(port, 0, TIOCM_DTR | TIOCM_RTS); 14650c9bd600SJi-Ze Hong (Peter Hong) } 14660c9bd600SJi-Ze Hong (Peter Hong) 14670c9bd600SJi-Ze Hong (Peter Hong) static int f81534_write(struct tty_struct *tty, struct usb_serial_port *port, 14680c9bd600SJi-Ze Hong (Peter Hong) const u8 *buf, int count) 14690c9bd600SJi-Ze Hong (Peter Hong) { 14700c9bd600SJi-Ze Hong (Peter Hong) int bytes_out, status; 14710c9bd600SJi-Ze Hong (Peter Hong) 14720c9bd600SJi-Ze Hong (Peter Hong) if (!count) 14730c9bd600SJi-Ze Hong (Peter Hong) return 0; 14740c9bd600SJi-Ze Hong (Peter Hong) 14750c9bd600SJi-Ze Hong (Peter Hong) bytes_out = kfifo_in_locked(&port->write_fifo, buf, count, 14760c9bd600SJi-Ze Hong (Peter Hong) &port->lock); 14770c9bd600SJi-Ze Hong (Peter Hong) 14780c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_writer(port, GFP_ATOMIC); 14790c9bd600SJi-Ze Hong (Peter Hong) if (status) { 14800c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed\n", __func__); 14810c9bd600SJi-Ze Hong (Peter Hong) return status; 14820c9bd600SJi-Ze Hong (Peter Hong) } 14830c9bd600SJi-Ze Hong (Peter Hong) 14840c9bd600SJi-Ze Hong (Peter Hong) return bytes_out; 14850c9bd600SJi-Ze Hong (Peter Hong) } 14860c9bd600SJi-Ze Hong (Peter Hong) 14870c9bd600SJi-Ze Hong (Peter Hong) static bool f81534_tx_empty(struct usb_serial_port *port) 14880c9bd600SJi-Ze Hong (Peter Hong) { 14890c9bd600SJi-Ze Hong (Peter Hong) struct f81534_port_private *port_priv = usb_get_serial_port_data(port); 14900c9bd600SJi-Ze Hong (Peter Hong) 14910c9bd600SJi-Ze Hong (Peter Hong) return test_bit(F81534_TX_EMPTY_BIT, &port_priv->tx_empty); 14920c9bd600SJi-Ze Hong (Peter Hong) } 14930c9bd600SJi-Ze Hong (Peter Hong) 14940c9bd600SJi-Ze Hong (Peter Hong) static int f81534_resume(struct usb_serial *serial) 14950c9bd600SJi-Ze Hong (Peter Hong) { 14960c9bd600SJi-Ze Hong (Peter Hong) struct f81534_serial_private *serial_priv = 14970c9bd600SJi-Ze Hong (Peter Hong) usb_get_serial_data(serial); 14980c9bd600SJi-Ze Hong (Peter Hong) struct usb_serial_port *port; 14990c9bd600SJi-Ze Hong (Peter Hong) int error = 0; 15000c9bd600SJi-Ze Hong (Peter Hong) int status; 15010c9bd600SJi-Ze Hong (Peter Hong) size_t i; 15020c9bd600SJi-Ze Hong (Peter Hong) 15030c9bd600SJi-Ze Hong (Peter Hong) /* 15040c9bd600SJi-Ze Hong (Peter Hong) * We'll register port 0 bulkin when port had opened, It'll take all 15050c9bd600SJi-Ze Hong (Peter Hong) * port received data, MSR register change and TX_EMPTY information. 15060c9bd600SJi-Ze Hong (Peter Hong) */ 15070c9bd600SJi-Ze Hong (Peter Hong) mutex_lock(&serial_priv->urb_mutex); 15080c9bd600SJi-Ze Hong (Peter Hong) 15090c9bd600SJi-Ze Hong (Peter Hong) if (serial_priv->opened_port) { 15100c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_read_urb(serial, GFP_NOIO); 15110c9bd600SJi-Ze Hong (Peter Hong) if (status) { 15120c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 15130c9bd600SJi-Ze Hong (Peter Hong) return status; 15140c9bd600SJi-Ze Hong (Peter Hong) } 15150c9bd600SJi-Ze Hong (Peter Hong) } 15160c9bd600SJi-Ze Hong (Peter Hong) 15170c9bd600SJi-Ze Hong (Peter Hong) mutex_unlock(&serial_priv->urb_mutex); 15180c9bd600SJi-Ze Hong (Peter Hong) 15190c9bd600SJi-Ze Hong (Peter Hong) for (i = 0; i < serial->num_ports; i++) { 15200c9bd600SJi-Ze Hong (Peter Hong) port = serial->port[i]; 15210c9bd600SJi-Ze Hong (Peter Hong) if (!tty_port_initialized(&port->port)) 15220c9bd600SJi-Ze Hong (Peter Hong) continue; 15230c9bd600SJi-Ze Hong (Peter Hong) 15240c9bd600SJi-Ze Hong (Peter Hong) status = f81534_submit_writer(port, GFP_NOIO); 15250c9bd600SJi-Ze Hong (Peter Hong) if (status) { 15260c9bd600SJi-Ze Hong (Peter Hong) dev_err(&port->dev, "%s: submit failed\n", __func__); 15270c9bd600SJi-Ze Hong (Peter Hong) ++error; 15280c9bd600SJi-Ze Hong (Peter Hong) } 15290c9bd600SJi-Ze Hong (Peter Hong) } 15300c9bd600SJi-Ze Hong (Peter Hong) 15310c9bd600SJi-Ze Hong (Peter Hong) if (error) 15320c9bd600SJi-Ze Hong (Peter Hong) return -EIO; 15330c9bd600SJi-Ze Hong (Peter Hong) 15340c9bd600SJi-Ze Hong (Peter Hong) return 0; 15350c9bd600SJi-Ze Hong (Peter Hong) } 15360c9bd600SJi-Ze Hong (Peter Hong) 15370c9bd600SJi-Ze Hong (Peter Hong) static struct usb_serial_driver f81534_device = { 15380c9bd600SJi-Ze Hong (Peter Hong) .driver = { 15390c9bd600SJi-Ze Hong (Peter Hong) .owner = THIS_MODULE, 15400c9bd600SJi-Ze Hong (Peter Hong) .name = "f81534", 15410c9bd600SJi-Ze Hong (Peter Hong) }, 15420c9bd600SJi-Ze Hong (Peter Hong) .description = DRIVER_DESC, 15430c9bd600SJi-Ze Hong (Peter Hong) .id_table = f81534_id_table, 1544cac4cea5SJohan Hovold .num_bulk_in = 1, 1545cac4cea5SJohan Hovold .num_bulk_out = 1, 15460c9bd600SJi-Ze Hong (Peter Hong) .open = f81534_open, 15470c9bd600SJi-Ze Hong (Peter Hong) .close = f81534_close, 15480c9bd600SJi-Ze Hong (Peter Hong) .write = f81534_write, 15490c9bd600SJi-Ze Hong (Peter Hong) .tx_empty = f81534_tx_empty, 15500c9bd600SJi-Ze Hong (Peter Hong) .calc_num_ports = f81534_calc_num_ports, 15510c9bd600SJi-Ze Hong (Peter Hong) .port_probe = f81534_port_probe, 1552dea744baSJi-Ze Hong (Peter Hong) .port_remove = f81534_port_remove, 15537c36e6e1SJi-Ze Hong (Peter Hong) .break_ctl = f81534_break_ctl, 15540c9bd600SJi-Ze Hong (Peter Hong) .dtr_rts = f81534_dtr_rts, 15550c9bd600SJi-Ze Hong (Peter Hong) .process_read_urb = f81534_process_read_urb, 1556c8f97e77SAl Viro .get_serial = f81534_get_serial_info, 15570c9bd600SJi-Ze Hong (Peter Hong) .tiocmget = f81534_tiocmget, 15580c9bd600SJi-Ze Hong (Peter Hong) .tiocmset = f81534_tiocmset, 15590c9bd600SJi-Ze Hong (Peter Hong) .write_bulk_callback = f81534_write_usb_callback, 15600c9bd600SJi-Ze Hong (Peter Hong) .set_termios = f81534_set_termios, 15610c9bd600SJi-Ze Hong (Peter Hong) .resume = f81534_resume, 15620c9bd600SJi-Ze Hong (Peter Hong) }; 15630c9bd600SJi-Ze Hong (Peter Hong) 15640c9bd600SJi-Ze Hong (Peter Hong) static struct usb_serial_driver *const serial_drivers[] = { 15650c9bd600SJi-Ze Hong (Peter Hong) &f81534_device, NULL 15660c9bd600SJi-Ze Hong (Peter Hong) }; 15670c9bd600SJi-Ze Hong (Peter Hong) 15680c9bd600SJi-Ze Hong (Peter Hong) module_usb_serial_driver(serial_drivers, f81534_id_table); 15690c9bd600SJi-Ze Hong (Peter Hong) 15700c9bd600SJi-Ze Hong (Peter Hong) MODULE_DEVICE_TABLE(usb, f81534_id_table); 15710c9bd600SJi-Ze Hong (Peter Hong) MODULE_DESCRIPTION(DRIVER_DESC); 15720c9bd600SJi-Ze Hong (Peter Hong) MODULE_AUTHOR("Peter Hong <Peter_Hong@fintek.com.tw>"); 15730c9bd600SJi-Ze Hong (Peter Hong) MODULE_AUTHOR("Tom Tsai <Tom_Tsai@fintek.com.tw>"); 15740c9bd600SJi-Ze Hong (Peter Hong) MODULE_LICENSE("GPL"); 1575