Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit dae77f75 authored by Ricardo Ribalda Delgado's avatar Ricardo Ribalda Delgado Committed by Greg Kroah-Hartman
Browse files

serial/8250_fintek: Support for chip_ip 0x0501 



There are some chips with the same interface but different chip ip.

Reported-by: default avatarPeter Hong <peter_hong@fintek.com.tw>
Reviewed-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 017bec38

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

+11 −10
Original line number Diff line number Diff line
@@ -22,9 +22,9 @@ 
#define ENTRY_KEY 0x77

#define EXIT_KEY 0xAA

#define CHIP_ID1  0x20

#define CHIP_ID1_VAL 0x02

#define CHIP_ID2  0x21

#define CHIP_ID2_VAL 0x16

#define CHIP_ID_0 0x1602

#define CHIP_ID_1 0x0501

#define VENDOR_ID1 0x23

#define VENDOR_ID1_VAL 0x19

#define VENDOR_ID2 0x24
@@ -77,14 +77,7 @@ static int fintek_8250_get_index(resource_size_t base_addr) 


static int fintek_8250_check_id(u16 base_port)

{



	outb(CHIP_ID1, base_port + ADDR_PORT);

	if (inb(base_port + DATA_PORT) != CHIP_ID1_VAL)

		return -ENODEV;



	outb(CHIP_ID2, base_port + ADDR_PORT);

	if (inb(base_port + DATA_PORT) != CHIP_ID2_VAL)

		return -ENODEV;

	u16 chip;



	outb(VENDOR_ID1, base_port + ADDR_PORT);

	if (inb(base_port + DATA_PORT) != VENDOR_ID1_VAL)
@@ -94,6 +87,14 @@ static int fintek_8250_check_id(u16 base_port) 
	if (inb(base_port + DATA_PORT) != VENDOR_ID2_VAL)

		return -ENODEV;



	outb(CHIP_ID1, base_port + ADDR_PORT);

	chip = inb(base_port + DATA_PORT);

	outb(CHIP_ID2, base_port + ADDR_PORT);

	chip |= inb(base_port + DATA_PORT) << 8;



	if (chip != CHIP_ID_0 && chip != CHIP_ID_1)

		return -ENODEV;



	return 0;

}