[PATCH 5.10 483/545] serial: 8250: Dissociate 4MHz Titan ports from Oxford ports

Greg Kroah-Hartman
2022-08-19T16:44:26Z

From: Maciej W. Rozycki <macro@orcam.me.uk>

[ Upstream commit f771a34b141124a68265f91acae34cdb08aeb9e0 ]

Oxford Semiconductor PCIe (Tornado) serial port devices have their baud
base set incorrectly, however their `pciserial_board' entries have been
reused for Titan serial port devices. Define own entries for the latter
devices then, carrying over the settings, so that Oxford entries can be
fixed.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Link: https://lore.kernel.org/r/alpine.DEB.2.21.2106100142310.5469@angie.orcam.me.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/tty/serial/8250/8250_pci.c | 44 ++++++++++++++++++++++++++----
1 file changed, 38 insertions(+), 6 deletions(-)

diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index da2373787f85..c309a8a31621 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -2983,6 +2983,10 @@ enum pci_board_num_t {
pbn_sunix_pci_4s,
pbn_sunix_pci_8s,
pbn_sunix_pci_16s,
+ pbn_titan_1_4000000,
+ pbn_titan_2_4000000,
+ pbn_titan_4_4000000,
+ pbn_titan_8_4000000,
pbn_moxa8250_2p,
pbn_moxa8250_4p,
pbn_moxa8250_8p,
@@ -3770,6 +3774,34 @@ static struct pciserial_board pci_boards[] = {
.base_baud = 921600,
.uart_offset = 0x8,
},
+ [pbn_titan_1_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 1,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
+ [pbn_titan_2_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 2,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
+ [pbn_titan_4_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 4,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
+ [pbn_titan_8_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 8,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
[pbn_moxa8250_2p] = {
.flags = FL_BASE1,
.num_ports = 2,
@@ -4721,22 +4753,22 @@ static const struct pci_device_id serial_pci_tbl[] = {
pbn_b0_4_921600 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_100E,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_oxsemi_1_4000000 },
+ pbn_titan_1_4000000 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200E,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_oxsemi_2_4000000 },
+ pbn_titan_2_4000000 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_400E,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_oxsemi_4_4000000 },
+ pbn_titan_4_4000000 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_800E,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_oxsemi_8_4000000 },
+ pbn_titan_8_4000000 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200EI,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_oxsemi_2_4000000 },
+ pbn_titan_2_4000000 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200EISI,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
- pbn_oxsemi_2_4000000 },
+ pbn_titan_2_4000000 },
{ PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_200V3,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b0_bt_2_921600 },
--
2.35.1