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Commit fcfd3c09 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Greg Kroah-Hartman
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serial: 8250_pci: Split out Pericom driver 

Pericom along with Acces I/O support consumes a lot of LOCs in 8250_pci.c.
For the sake of easier maintenance, split it to a separate driver.
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211122133512.8947-2-andriy.shevchenko@linux.intel.comSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8cf8d3c4
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Showing with 228 additions and 400 deletions
drivers/tty/serial/8250/8250_pci.c
View file @ fcfd3c09
...@@ -1318,89 +1318,6 @@ static int pci_default_setup(struct serial_private *priv, ...@@ -1318,89 +1318,6 @@ static int pci_default_setup(struct serial_private *priv,
return setup_port(priv, port, bar, offset, board->reg_shift); return setup_port(priv, port, bar, offset, board->reg_shift);
} }
static void
pericom_do_set_divisor(struct uart_port *port, unsigned int baud,
unsigned int quot, unsigned int quot_frac)
{
int scr;
int lcr;
for (scr = 16; scr > 4; scr--) {
unsigned int maxrate = port->uartclk / scr;
unsigned int divisor = max(maxrate / baud, 1U);
int delta = maxrate / divisor - baud;
if (baud > maxrate + baud / 50)
continue;
if (delta > baud / 50)
divisor++;
if (divisor > 0xffff)
continue;
/* Update delta due to possible divisor change */
delta = maxrate / divisor - baud;
if (abs(delta) < baud / 50) {
lcr = serial_port_in(port, UART_LCR);
serial_port_out(port, UART_LCR, lcr | 0x80);
serial_port_out(port, UART_DLL, divisor & 0xff);
serial_port_out(port, UART_DLM, divisor >> 8 & 0xff);
serial_port_out(port, 2, 16 - scr);
serial_port_out(port, UART_LCR, lcr);
return;
}
}
}
static int pci_pericom_setup(struct serial_private *priv,
const struct pciserial_board *board,
struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset, maxnr;
bar = FL_GET_BASE(board->flags);
if (board->flags & FL_BASE_BARS)
bar += idx;
else
offset += idx * board->uart_offset;
maxnr = (pci_resource_len(priv->dev, bar) - board->first_offset) >>
(board->reg_shift + 3);
if (board->flags & FL_REGION_SZ_CAP && idx >= maxnr)
return 1;
port->port.set_divisor = pericom_do_set_divisor;
return setup_port(priv, port, bar, offset, board->reg_shift);
}
static int pci_pericom_setup_four_at_eight(struct serial_private *priv,
const struct pciserial_board *board,
struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset, maxnr;
bar = FL_GET_BASE(board->flags);
if (board->flags & FL_BASE_BARS)
bar += idx;
else
offset += idx * board->uart_offset;
if (idx==3)
offset = 0x38;
maxnr = (pci_resource_len(priv->dev, bar) - board->first_offset) >>
(board->reg_shift + 3);
if (board->flags & FL_REGION_SZ_CAP && idx >= maxnr)
return 1;
port->port.set_divisor = pericom_do_set_divisor;
return setup_port(priv, port, bar, offset, board->reg_shift);
}
static int static int
ce4100_serial_setup(struct serial_private *priv, ce4100_serial_setup(struct serial_private *priv,
...@@ -1886,42 +1803,6 @@ pci_moxa_setup(struct serial_private *priv, ...@@ -1886,42 +1803,6 @@ pci_moxa_setup(struct serial_private *priv,
#define PCIE_DEVICE_ID_WCH_CH384_8S 0x3853 #define PCIE_DEVICE_ID_WCH_CH384_8S 0x3853
#define PCIE_DEVICE_ID_WCH_CH382_2S 0x3253 #define PCIE_DEVICE_ID_WCH_CH382_2S 0x3253
#define PCI_VENDOR_ID_ACCESIO 0x494f
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB 0x1051
#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S 0x1053
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB 0x105C
#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S 0x105E
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB 0x1091
#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2 0x1093
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB 0x1099
#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4 0x109B
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB 0x10D1
#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM 0x10D3
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB 0x10DA
#define PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM 0x10DC
#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1 0x1108
#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2 0x1110
#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2 0x1111
#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4 0x1118
#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4 0x1119
#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S 0x1152
#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S 0x115A
#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2 0x1190
#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2 0x1191
#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4 0x1198
#define PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4 0x1199
#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM 0x11D0
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4 0x105A
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4 0x105B
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8 0x106A
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8 0x106B
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4 0x1098
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8 0x10A9
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM 0x10D9
#define PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM 0x10E9
#define PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM 0x11D8
#define PCI_DEVICE_ID_MOXA_CP102E 0x1024 #define PCI_DEVICE_ID_MOXA_CP102E 0x1024
#define PCI_DEVICE_ID_MOXA_CP102EL 0x1025 #define PCI_DEVICE_ID_MOXA_CP102EL 0x1025
#define PCI_DEVICE_ID_MOXA_CP104EL_A 0x1045 #define PCI_DEVICE_ID_MOXA_CP104EL_A 0x1045
...@@ -2198,16 +2079,6 @@ static struct pci_serial_quirk pci_serial_quirks[] = { ...@@ -2198,16 +2079,6 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.setup = pci_default_setup, .setup = pci_default_setup,
.exit = pci_plx9050_exit, .exit = pci_plx9050_exit,
}, },
/*
* Pericom (Only 7954 - It have a offset jump for port 4)
*/
{
.vendor = PCI_VENDOR_ID_PERICOM,
.device = PCI_DEVICE_ID_PERICOM_PI7C9X7954,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
/* /*
* PLX * PLX
*/ */
...@@ -2238,125 +2109,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = { ...@@ -2238,125 +2109,7 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
.setup = pci_default_setup, .setup = pci_default_setup,
.exit = pci_plx9050_exit, .exit = pci_plx9050_exit,
}, },
{ /*
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup_four_at_eight,
},
{
.vendor = PCI_VENDOR_ID_ACCESIO,
.device = PCI_ANY_ID,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_pericom_setup,
}, /*
* SBS Technologies, Inc., PMC-OCTALPRO 232 * SBS Technologies, Inc., PMC-OCTALPRO 232
*/ */
{ {
...@@ -2948,10 +2701,6 @@ enum pci_board_num_t { ...@@ -2948,10 +2701,6 @@ enum pci_board_num_t {
pbn_wch382_2, pbn_wch382_2,
pbn_wch384_4, pbn_wch384_4,
pbn_wch384_8, pbn_wch384_8,
pbn_pericom_PI7C9X7951,
pbn_pericom_PI7C9X7952,
pbn_pericom_PI7C9X7954,
pbn_pericom_PI7C9X7958,
pbn_sunix_pci_1s, pbn_sunix_pci_1s,
pbn_sunix_pci_2s, pbn_sunix_pci_2s,
pbn_sunix_pci_4s, pbn_sunix_pci_4s,
...@@ -3696,33 +3445,6 @@ static struct pciserial_board pci_boards[] = { ...@@ -3696,33 +3445,6 @@ static struct pciserial_board pci_boards[] = {
.uart_offset = 8, .uart_offset = 8,
.first_offset = 0x00, .first_offset = 0x00,
}, },
/*
* Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART
*/
[pbn_pericom_PI7C9X7951] = {
.flags = FL_BASE0,
.num_ports = 1,
.base_baud = 921600,
.uart_offset = 0x8,
},
[pbn_pericom_PI7C9X7952] = {
.flags = FL_BASE0,
.num_ports = 2,
.base_baud = 921600,
.uart_offset = 0x8,
},
[pbn_pericom_PI7C9X7954] = {
.flags = FL_BASE0,
.num_ports = 4,
.base_baud = 921600,
.uart_offset = 0x8,
},
[pbn_pericom_PI7C9X7958] = {
.flags = FL_BASE0,
.num_ports = 8,
.base_baud = 921600,
.uart_offset = 0x8,
},
[pbn_sunix_pci_1s] = { [pbn_sunix_pci_1s] = {
.num_ports = 1, .num_ports = 1,
.base_baud = 921600, .base_baud = 921600,
...@@ -3834,6 +3556,10 @@ static const struct pci_device_id blacklist[] = { ...@@ -3834,6 +3556,10 @@ static const struct pci_device_id blacklist[] = {
{ PCI_VDEVICE(EXAR, PCI_ANY_ID), }, { PCI_VDEVICE(EXAR, PCI_ANY_ID), },
{ PCI_VDEVICE(COMMTECH, PCI_ANY_ID), }, { PCI_VDEVICE(COMMTECH, PCI_ANY_ID), },
/* Pericom devices */
{ PCI_VDEVICE(PERICOM, PCI_ANY_ID), },
{ PCI_VDEVICE(ACCESSIO, PCI_ANY_ID), },
/* End of the black list */ /* End of the black list */
{ } { }
}; };
...@@ -5027,127 +4753,6 @@ static const struct pci_device_id serial_pci_tbl[] = { ...@@ -5027,127 +4753,6 @@ static const struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_DCI, PCI_DEVICE_ID_DCI_PCCOM8, { PCI_VENDOR_ID_DCI, PCI_DEVICE_ID_DCI_PCCOM8,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_b3_8_115200 }, pbn_b3_8_115200 },
/*
* Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART
*/
{ PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7951,
PCI_ANY_ID, PCI_ANY_ID,
0,
0, pbn_pericom_PI7C9X7951 },
{ PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7952,
PCI_ANY_ID, PCI_ANY_ID,
0,
0, pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7954,
PCI_ANY_ID, PCI_ANY_ID,
0,
0, pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7958,
PCI_ANY_ID, PCI_ANY_ID,
0,
0, pbn_pericom_PI7C9X7958 },
/*
* ACCES I/O Products quad
*/
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SDB,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2S,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SDB,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4S,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_2DB,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4DB,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM232_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_2SMDB,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_2SM,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SMDB,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_COM_4SM,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_1,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7951 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM422_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM485_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2S,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4S,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_2,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM232_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_MPCIE_ICM232_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_2SM,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7952 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM422_8,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7958 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM485_8,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7958 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_4,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM232_8,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7958 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_4SM,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_COM_8SM,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7958 },
{ PCI_VENDOR_ID_ACCESIO, PCI_DEVICE_ID_ACCESIO_PCIE_ICM_4SM,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_pericom_PI7C9X7954 },
/* /*
* Topic TP560 Data/Fax/Voice 56k modem (reported by Evan Clarke) * Topic TP560 Data/Fax/Voice 56k modem (reported by Evan Clarke)
*/ */
......
drivers/tty/serial/8250/8250_pericom.c 0 → 100644
View file @ fcfd3c09
// SPDX-License-Identifier: GPL-2.0
/* Driver for Pericom UART */
#include <linux/bits.h>
#include <linux/module.h>
#include <linux/overflow.h>
#include <linux/pci.h>
#include "8250.h"
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SDB 0x1051
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2S 0x1053
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_4 0x105a
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_4 0x105b
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SDB 0x105c
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4S 0x105e
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_8 0x106a
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_8 0x106b
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_2DB 0x1091
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_2 0x1093
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4 0x1098
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4DB 0x1099
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_4 0x109b
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_8 0x10a9
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SMDB 0x10d1
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2SM 0x10d3
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SM 0x10d9
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SMDB 0x10da
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4SM 0x10dc
#define PCI_DEVICE_ID_ACCESSIO_PCIE_COM_8SM 0x10e9
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_1 0x1108
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_2 0x1110
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_2 0x1111
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_4 0x1118
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_4 0x1119
#define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2S 0x1152
#define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4S 0x115a
#define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_2 0x1190
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_2 0x1191
#define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_4 0x1198
#define PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_4 0x1199
#define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2SM 0x11d0
#define PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4SM 0x11d8
struct pericom8250 {
void __iomem *virt;
unsigned int nr;
int line[];
};
static void pericom_do_set_divisor(struct uart_port *port, unsigned int baud,
unsigned int quot, unsigned int quot_frac)
{
int scr;
for (scr = 16; scr > 4; scr--) {
unsigned int maxrate = port->uartclk / scr;
unsigned int divisor = max(maxrate / baud, 1U);
int delta = maxrate / divisor - baud;
if (baud > maxrate + baud / 50)
continue;
if (delta > baud / 50)
divisor++;
if (divisor > 0xffff)
continue;
/* Update delta due to possible divisor change */
delta = maxrate / divisor - baud;
if (abs(delta) < baud / 50) {
int lcr = serial_port_in(port, UART_LCR);
serial_port_out(port, UART_LCR, lcr | 0x80);
serial_port_out(port, UART_DLL, divisor & 0xff);
serial_port_out(port, UART_DLM, (divisor >> 8) & 0xff);
serial_port_out(port, 2, 16 - scr);
serial_port_out(port, UART_LCR, lcr);
return;
}
}
}
static int pericom8250_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
unsigned int nr, i, bar = 0, maxnr;
struct pericom8250 *pericom;
struct uart_8250_port uart;
int ret;
ret = pcim_enable_device(pdev);
if (ret)
return ret;
maxnr = pci_resource_len(pdev, bar) >> 3;
if (pdev->vendor == PCI_VENDOR_ID_PERICOM)
nr = pdev->device & 0x0f;
else if (pdev->vendor == PCI_VENDOR_ID_ACCESSIO)
nr = BIT(((pdev->device & 0x38) >> 3) - 1);
else
nr = 1;
pericom = devm_kzalloc(&pdev->dev, struct_size(pericom, line, nr), GFP_KERNEL);
if (!pericom)
return -ENOMEM;
pericom->virt = pcim_iomap(pdev, bar, 0);
if (!pericom->virt)
return -ENOMEM;
memset(&uart, 0, sizeof(uart));
uart.port.dev = &pdev->dev;
uart.port.irq = pdev->irq;
uart.port.private_data = pericom;
uart.port.iotype = UPIO_PORT;
uart.port.uartclk = 921600 * 16;
uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
uart.port.set_divisor = pericom_do_set_divisor;
for (i = 0; i < nr && i < maxnr; i++) {
unsigned int offset = (i == 3 && nr == 4) ? 0x38 : i * 0x8;
uart.port.iobase = pci_resource_start(pdev, bar) + offset;
dev_dbg(&pdev->dev, "Setup PCI port: port %lx, irq %d, type %d\n",
uart.port.iobase, uart.port.irq, uart.port.iotype);
pericom->line[i] = serial8250_register_8250_port(&uart);
if (pericom->line[i] < 0) {
dev_err(&pdev->dev,
"Couldn't register serial port %lx, irq %d, type %d, error %d\n",
uart.port.iobase, uart.port.irq,
uart.port.iotype, pericom->line[i]);
break;
}
}
pericom->nr = i;
pci_set_drvdata(pdev, pericom);
return 0;
}
static void pericom8250_remove(struct pci_dev *pdev)
{
struct pericom8250 *pericom = pci_get_drvdata(pdev);
unsigned int i;
for (i = 0; i < pericom->nr; i++)
serial8250_unregister_port(pericom->line[i]);
}
static const struct pci_device_id pericom8250_pci_ids[] = {
/*
* Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART
* (Only 7954 has an offset jump for port 4)
*/
{ PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7951) },
{ PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7952) },
{ PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7954) },
{ PCI_VDEVICE(PERICOM, PCI_DEVICE_ID_PERICOM_PI7C9X7958) },
/*
* ACCES I/O Products quad
* (Only 7954 has an offset jump for port 4)
*/
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SDB) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2S) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SDB) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4S) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM422_8) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM485_8) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_2DB) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_2) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_4DB) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM232_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM232_8) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_2SMDB) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_2SM) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SM) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_4SMDB) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_COM_4SM) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_COM_8SM) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_1) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_2) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_2) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM422_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM485_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2S) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4S) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_2) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_2) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM232_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_MPCIE_ICM232_4) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_2SM) },
{ PCI_VDEVICE(ACCESSIO, PCI_DEVICE_ID_ACCESSIO_PCIE_ICM_4SM) },
{ }
};
MODULE_DEVICE_TABLE(pci, pericom8250_pci_ids);
static struct pci_driver pericom8250_pci_driver = {
.name = "8250_pericom",
.id_table = pericom8250_pci_ids,
.probe = pericom8250_probe,
.remove = pericom8250_remove,
};
module_pci_driver(pericom8250_pci_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Pericom UART driver");
drivers/tty/serial/8250/Kconfig
View file @ fcfd3c09
...@@ -498,6 +498,14 @@ config SERIAL_8250_MID ...@@ -498,6 +498,14 @@ config SERIAL_8250_MID
present on the UART found on Intel Medfield SOC and various other present on the UART found on Intel Medfield SOC and various other
Intel platforms. Intel platforms.
config SERIAL_8250_PERICOM
tristate "Support for Pericom and Acces I/O serial ports"
default SERIAL_8250
depends on SERIAL_8250 && PCI
help
Selecting this option will enable handling of the extra features
present on the Pericom and Acces I/O UARTs.
config SERIAL_8250_PXA config SERIAL_8250_PXA
tristate "PXA serial port support" tristate "PXA serial port support"
depends on SERIAL_8250 depends on SERIAL_8250
......
drivers/tty/serial/8250/Makefile
View file @ fcfd3c09
...@@ -36,6 +36,7 @@ obj-$(CONFIG_SERIAL_8250_UNIPHIER) += 8250_uniphier.o ...@@ -36,6 +36,7 @@ obj-$(CONFIG_SERIAL_8250_UNIPHIER) += 8250_uniphier.o
obj-$(CONFIG_SERIAL_8250_INGENIC) += 8250_ingenic.o obj-$(CONFIG_SERIAL_8250_INGENIC) += 8250_ingenic.o
obj-$(CONFIG_SERIAL_8250_LPSS) += 8250_lpss.o obj-$(CONFIG_SERIAL_8250_LPSS) += 8250_lpss.o
obj-$(CONFIG_SERIAL_8250_MID) += 8250_mid.o obj-$(CONFIG_SERIAL_8250_MID) += 8250_mid.o
obj-$(CONFIG_SERIAL_8250_PERICOM) += 8250_pericom.o
obj-$(CONFIG_SERIAL_8250_PXA) += 8250_pxa.o obj-$(CONFIG_SERIAL_8250_PXA) += 8250_pxa.o
obj-$(CONFIG_SERIAL_8250_TEGRA) += 8250_tegra.o obj-$(CONFIG_SERIAL_8250_TEGRA) += 8250_tegra.o
obj-$(CONFIG_SERIAL_8250_BCM7271) += 8250_bcm7271.o obj-$(CONFIG_SERIAL_8250_BCM7271) += 8250_bcm7271.o
......
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