[PATCH] Perle multimodem card (PCI-RAS) detection

Get the Perle quad-modem PCI card (PCI-RAS4) detected by serial driver.  It
may also get the PCI-RAS8 running, but can't guarantee as I didn't had one for
testing.

Signed-off-by: Thomas Hoehn <thomas.hoehn@avocent.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 5261f0af8b101bcf4e1149caebdb484bbe92aa70..2964ca9df5a010f9cebb264e4115d5a588e5c234 100644 (file)
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -920,12 +920,16 @@ static void autoconfig(struct uart_8250_port *up, unsigned int probeflags)
 #ifdef __i386__
                outb(0xff, 0x080);
 #endif
-               scratch2 = serial_inp(up, UART_IER);
+               /*
+                * Mask out IER[7:4] bits for test as some UARTs (e.g. TL
+                * 16C754B) allow only to modify them if an EFR bit is set.
+                */
+               scratch2 = serial_inp(up, UART_IER) & 0x0f;
                serial_outp(up, UART_IER, 0x0F);
 #ifdef __i386__
                outb(0, 0x080);
 #endif
-               scratch3 = serial_inp(up, UART_IER);
+               scratch3 = serial_inp(up, UART_IER) & 0x0f;
                serial_outp(up, UART_IER, scratch);
                if (scratch2 != 0 || scratch3 != 0x0F) {
                        /*

diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index 52e2e64c6649dc25379994f6b1b119bc2d3b768f..5dfaa0926cfd9b33abf09d2ce5227edef85383e5 100644 (file)
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -677,6 +677,13 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
        /*
         * PLX
         */
+       {
+               .vendor         = PCI_VENDOR_ID_PLX,
+               .device         = PCI_DEVICE_ID_PLX_9030,
+               .subvendor      = PCI_SUBVENDOR_ID_PERLE,
+               .subdevice      = PCI_ANY_ID,
+               .setup          = pci_default_setup,
+       },
        {
                .vendor         = PCI_VENDOR_ID_PLX,
                .device         = PCI_DEVICE_ID_PLX_9050,
@@ -2378,6 +2385,15 @@ static struct pci_device_id serial_pci_tbl[] = {
                PCI_ANY_ID, PCI_ANY_ID, 0, 0,   /* 135a.0811 */
                pbn_b2_2_115200 },
 
+       /*
+        * Perle PCI-RAS cards
+        */
+       {       PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9030,
+               PCI_SUBVENDOR_ID_PERLE, PCI_SUBDEVICE_ID_PCI_RAS4,
+               0, 0, pbn_b2_4_921600 },
+       {       PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9030,
+               PCI_SUBVENDOR_ID_PERLE, PCI_SUBDEVICE_ID_PCI_RAS8,
+               0, 0, pbn_b2_8_921600 },
        /*
         * These entries match devices with class COMMUNICATION_SERIAL,
         * COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL

diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index e5e5b9ffcfb518f8e4e07c7359e9762beeb18745..d655378f1c6326e67b88cc55c072ffde39b5a207 100644 (file)
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -959,6 +959,7 @@
 #define PCI_DEVICE_ID_PLX_R753         0x1152
 #define PCI_DEVICE_ID_PLX_OLITEC       0x1187
 #define PCI_DEVICE_ID_PLX_PCI200SYN    0x3196
+#define PCI_DEVICE_ID_PLX_9030          0x9030
 #define PCI_DEVICE_ID_PLX_9050         0x9050
 #define PCI_DEVICE_ID_PLX_9080         0x9080
 #define PCI_DEVICE_ID_PLX_GTEK_SERIAL2 0xa001
@@ -1994,6 +1995,10 @@
 
 #define PCI_VENDOR_ID_CHELSIO          0x1425
 
+#define PCI_SUBVENDOR_ID_PERLE          0x155f
+#define PCI_SUBDEVICE_ID_PCI_RAS4       0xf001
+#define PCI_SUBDEVICE_ID_PCI_RAS8       0xf010
+
 
 #define PCI_VENDOR_ID_SYBA             0x1592
 #define PCI_DEVICE_ID_SYBA_2P_EPP      0x0782