[PATCH] Support for Exar XR17C158 Octal UART

Here's a minimal patch to support the Exar Corp.  XR17C158 Octal UART Chip
(PCI).
Signed-off-by: Raphael Zimmerer <killekulla@rdrz.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/serial/8250_pci.c

@@ -1068,6 +1068,9 @@ enum pci_board_num_t {
 	pbn_computone_6,
 	pbn_computone_8,
 	pbn_sbsxrsio,
+	pbn_exar_XR17C152,
+	pbn_exar_XR17C154,
+	pbn_exar_XR17C158,
 };
 
 /*
@@ -1488,7 +1491,30 @@ static struct pci_board pci_boards[] __devinitdata = {
 		.base_baud	= 460800,
 		.uart_offset	= 256,
 		.reg_shift	= 4,
-	}
+	},
+	/*
+	 * Exar Corp. XR17C15[248] Dual/Quad/Octal UART
+	 *  Only basic 16550A support.
+	 *  XR17C15[24] are not tested, but they should work.
+	 */
+	[pbn_exar_XR17C152] = {
+		.flags		= FL_BASE0,
+		.num_ports	= 2,
+		.base_baud	= 921600,
+		.uart_offset	= 0x200,
+	},
+	[pbn_exar_XR17C154] = {
+		.flags		= FL_BASE0,
+		.num_ports	= 4,
+		.base_baud	= 921600,
+		.uart_offset	= 0x200,
+	},
+	[pbn_exar_XR17C158] = {
+		.flags		= FL_BASE0,
+		.num_ports	= 8,
+		.base_baud	= 921600,
+		.uart_offset	= 0x200,
+	},
 };
 
 /*
@@ -2147,6 +2173,22 @@ static struct pci_device_id serial_pci_tbl[] = {
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		pbn_b3_8_115200 },
 
+	/*
+	 * Exar Corp. XR17C15[248] Dual/Quad/Octal UART
+	 */
+	{	PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C152,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0,
+		0, pbn_exar_XR17C152 },
+	{	PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C154,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0,
+		0, pbn_exar_XR17C154 },
+	{	PCI_VENDOR_ID_EXAR, PCI_DEVICE_ID_EXAR_XR17C158,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0,
+		0, pbn_exar_XR17C158 },
+
 	/*
 	 * These entries match devices with class COMMUNICATION_SERIAL,
 	 * COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL

include/linux/pci_ids.h

@@ -1799,6 +1799,11 @@
 #define PCI_DEVICE_ID_CCD_B00C		0xb00c
 #define PCI_DEVICE_ID_CCD_B100		0xb100
 
+#define PCI_VENDOR_ID_EXAR		0x13a8
+#define PCI_DEVICE_ID_EXAR_XR17C152	0x0152
+#define PCI_DEVICE_ID_EXAR_XR17C154	0x0154
+#define PCI_DEVICE_ID_EXAR_XR17C158	0x0158
+
 #define PCI_VENDOR_ID_MICROGATE		0x13c0
 #define PCI_DEVICE_ID_MICROGATE_USC	0x0010
 #define PCI_DEVICE_ID_MICROGATE_SCC	0x0020