Commit 166105c9 authored by Filip Brozovic's avatar Filip Brozovic Committed by Greg Kroah-Hartman
Browse files

serial: 8250_fintek: Add support for F81216E 



The F81216E is a LPC/eSPI to 4 UART Super I/O and is mostly compatible with
the F81216H, but does not support RS-485 auto-direction delays on any port.

Signed-off-by: default avatarFilip Brozovic <fbrozovic@gmail.com>
Cc: stable <stable@kernel.org>
Link: https://lore.kernel.org/r/20241110111703.15494-1-fbrozovic@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3791ea69

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

+13 −1
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#define CHIP_ID_F81866 0x1010

#define CHIP_ID_F81966 0x0215

#define CHIP_ID_F81216AD 0x1602

#define CHIP_ID_F81216E 0x1617

#define CHIP_ID_F81216H 0x0501

#define CHIP_ID_F81216 0x0802

#define VENDOR_ID1 0x23
@@ -158,6 +159,7 @@ static int fintek_8250_check_id(struct fintek_8250 *pdata) 
	case CHIP_ID_F81866:

	case CHIP_ID_F81966:

	case CHIP_ID_F81216AD:

	case CHIP_ID_F81216E:

	case CHIP_ID_F81216H:

	case CHIP_ID_F81216:

		break;
@@ -181,6 +183,7 @@ static int fintek_8250_get_ldn_range(struct fintek_8250 *pdata, int *min, 
		return 0;



	case CHIP_ID_F81216AD:

	case CHIP_ID_F81216E:

	case CHIP_ID_F81216H:

	case CHIP_ID_F81216:

		*min = F81216_LDN_LOW;
@@ -250,6 +253,7 @@ static void fintek_8250_set_irq_mode(struct fintek_8250 *pdata, bool is_level) 
		break;



	case CHIP_ID_F81216AD:

	case CHIP_ID_F81216E:

	case CHIP_ID_F81216H:

	case CHIP_ID_F81216:

		sio_write_mask_reg(pdata, FINTEK_IRQ_MODE, IRQ_SHARE,
@@ -263,7 +267,8 @@ static void fintek_8250_set_irq_mode(struct fintek_8250 *pdata, bool is_level) 
static void fintek_8250_set_max_fifo(struct fintek_8250 *pdata)

{

	switch (pdata->pid) {

	case CHIP_ID_F81216H: /* 128Bytes FIFO */

	case CHIP_ID_F81216E: /* 128Bytes FIFO */

	case CHIP_ID_F81216H:

	case CHIP_ID_F81966:

	case CHIP_ID_F81866:

		sio_write_mask_reg(pdata, FIFO_CTRL,
@@ -297,6 +302,7 @@ static void fintek_8250_set_termios(struct uart_port *port, 
		goto exit;



	switch (pdata->pid) {

	case CHIP_ID_F81216E:

	case CHIP_ID_F81216H:

		reg = RS485;

		break;
@@ -346,6 +352,7 @@ static void fintek_8250_set_termios_handler(struct uart_8250_port *uart) 
	struct fintek_8250 *pdata = uart->port.private_data;



	switch (pdata->pid) {

	case CHIP_ID_F81216E:

	case CHIP_ID_F81216H:

	case CHIP_ID_F81966:

	case CHIP_ID_F81866:
@@ -438,6 +445,11 @@ static void fintek_8250_set_rs485_handler(struct uart_8250_port *uart) 
			uart->port.rs485_supported = fintek_8250_rs485_supported;

		break;



	case CHIP_ID_F81216E: /* F81216E does not support RS485 delays */

		uart->port.rs485_config = fintek_8250_rs485_config;

		uart->port.rs485_supported = fintek_8250_rs485_supported;

		break;



	default: /* No RS485 Auto direction functional */

		break;

	}