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Commit 1e26c472 authored by Ji-Ze Hong (Peter Hong)'s avatar Ji-Ze Hong (Peter Hong) Committed by Greg Kroah-Hartman
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serial: 8250_fintek: Add F81216 Support 



Fintek F81216 is a LPC to 4 UARTs device. It's the F81216 series but
support less functional than F81216AD/F81216H

The following list is brief descriptions of F81216 series:

F81216H (0105)
	9Bit/High baud rate(not implements with mainline)
	RS485, 128Bytes FIFO (implemented)

F81216AD (0216)
	9Bit(not implements with mainline)
	RS485(implemented)

F81216 (0208)
	basically 16550A

Suggested-by: default avatarRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: default avatarJi-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c2236fac

drivers/tty/serial/8250/8250_fintek.c

+24 −2
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#define CHIP_ID2  0x21

#define CHIP_ID_F81216AD 0x1602

#define CHIP_ID_F81216H 0x0501

#define CHIP_ID_F81216 0x0802

#define VENDOR_ID1 0x23

#define VENDOR_ID1_VAL 0x19

#define VENDOR_ID2 0x24
@@ -107,8 +108,14 @@ static int fintek_8250_check_id(struct fintek_8250 *pdata) 
	chip = sio_read_reg(pdata, CHIP_ID1);

	chip |= sio_read_reg(pdata, CHIP_ID2) << 8;



	if (chip != CHIP_ID_F81216AD && chip != CHIP_ID_F81216H)

	switch (chip) {

	case CHIP_ID_F81216AD:

	case CHIP_ID_F81216H:

	case CHIP_ID_F81216:

		break;

	default:

		return -ENODEV;

	}



	pdata->pid = chip;

	return 0;
@@ -235,6 +242,21 @@ static int probe_setup_port(struct fintek_8250 *pdata, u16 io_address, 
	return -ENODEV;

}



static void fintek_8250_set_rs485_handler(struct uart_8250_port *uart)

{

	struct fintek_8250 *pdata = uart->port.private_data;



	switch (pdata->pid) {

	case CHIP_ID_F81216AD:

	case CHIP_ID_F81216H:

		uart->port.rs485_config = fintek_8250_rs485_config;

		break;



	default: /* No RS485 Auto direction functional */

		break;

	}

}



int fintek_8250_probe(struct uart_8250_port *uart)

{

	struct fintek_8250 *pdata;
@@ -248,8 +270,8 @@ int fintek_8250_probe(struct uart_8250_port *uart) 
		return -ENOMEM;



	memcpy(pdata, &probe_data, sizeof(probe_data));

	uart->port.rs485_config = fintek_8250_rs485_config;

	uart->port.private_data = pdata;

	fintek_8250_set_rs485_handler(uart);



	return 0;

}