3.16.7-ckt20 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Soeren Grunewald <soeren.grunewald@xxxxxxx> commit 96a5d18bc1338786fecac73599f1681f59a59a8e upstream. The Exar XR17V358 chip usually provides only 8 ports. But two chips can be combined to act as a single 16 port chip. Therefor one chip is configured as master the second as slave by connecting the mode pin to VCC (master) or GND (slave). Then the master chip is reporting a different device-id depending on whether a slave is detected or not. The UARTs 8-15 are addressed from 0x2000-0x3fff. So the offset of 0x400 from UART to UART can be used to address all 16 ports as before. See: https://www.exar.com/common/content/document.ashx?id=1587 page 11 Signed-off-by: Soeren Grunewald <soeren.grunewald@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx> --- drivers/tty/serial/8250/8250_pci.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index ae4a16e8ee10..f01eec579695 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1802,6 +1802,8 @@ pci_wch_ch353_setup(struct serial_private *priv, #define PCI_DEVICE_ID_PERICOM_PI7C9X7954 0x7954 #define PCI_DEVICE_ID_PERICOM_PI7C9X7958 0x7958 +#define PCI_DEVICE_ID_EXAR_XR17V8358 0x8358 + /* Unknown vendors/cards - this should not be in linux/pci_ids.h */ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584 #define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588 @@ -2281,6 +2283,13 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .subdevice = PCI_ANY_ID, .setup = pci_xr17v35x_setup, }, + { + .vendor = PCI_VENDOR_ID_EXAR, + .device = PCI_DEVICE_ID_EXAR_XR17V8358, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_xr17v35x_setup, + }, /* * Xircom cards */ @@ -2729,6 +2738,7 @@ enum pci_board_num_t { pbn_exar_XR17V352, pbn_exar_XR17V354, pbn_exar_XR17V358, + pbn_exar_XR17V8358, pbn_exar_ibm_saturn, pbn_pasemi_1682M, pbn_ni8430_2, @@ -3402,6 +3412,14 @@ static struct pciserial_board pci_boards[] = { .reg_shift = 0, .first_offset = 0, }, + [pbn_exar_XR17V8358] = { + .flags = FL_BASE0, + .num_ports = 16, + .base_baud = 7812500, + .uart_offset = 0x400, + .reg_shift = 0, + .first_offset = 0, + }, [pbn_exar_ibm_saturn] = { .flags = FL_BASE0, .num_ports = 1, @@ -4797,7 +4815,7 @@ static struct pci_device_id serial_pci_tbl[] = { 0, 0, pbn_exar_XR17C158 }, /* - * Exar Corp. XR17V35[248] Dual/Quad/Octal PCIe UARTs + * Exar Corp. XR17V[48]35[248] Dual/Quad/Octal/Hexa PCIe UARTs */ { PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17V352, PCI_ANY_ID, PCI_ANY_ID, @@ -4811,7 +4829,10 @@ static struct pci_device_id serial_pci_tbl[] = { PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_exar_XR17V358 }, - + { PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17V8358, + PCI_ANY_ID, PCI_ANY_ID, + 0, + 0, pbn_exar_XR17V8358 }, /* * Pericom PI7C9X795[1248] Uno/Dual/Quad/Octal UART */ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html