[PATCH 2/4] ppc32: Adds support for the LITE5200B dev board

[Sylvain Munaut]

ppc32: Adds support for the LITE5200B dev board

This LITE5200B devboard is the new development board for the
Freescale MPC5200 processor. It has two PCI slots and so a
different PCI IRQ routing.

Signed-off-by: John Rigby <jrigby at freescale.com>
Signed-off-by: Sylvain Munaut <tnt at 246tNt.com>
---
commit 37ffaaccad4fb48c8416e610aab4d3bed41dfc80
tree 3f7b1b661e3ea7c6830c020e42948c575e73d52f
parent d2c9f75189b6bd63b94cc78f8522a44c4476939a
author Sylvain Munaut <tnt at 246tNt.com> 1138562427 +0100
committer Sylvain Munaut <tnt at 246tNt.com> 1143311804 +0100

 Kconfig              |    7 +++++++
 platforms/lite5200.c |   33 ++++++++++++++++++++++++++++++---
 2 files changed, 37 insertions(+), 3 deletions(-)

---
37ffaaccad4fb48c8416e610aab4d3bed41dfc80
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 54a0a9b..1c12da2 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -711,6 +711,13 @@ config LITE5200
 	  much but it's only been tested on this board version. I think this
 	  board is also known as IceCube.
 
+config LITE5200B
+	bool "Freescale LITE5200B"
+	depends LITE5200
+	help
+	  Support for the LITE5200B dev board for the MPC5200 from Freescale.
+	  This is the new board with 2 PCI slots.
+
 config MPC834x_SYS
 	bool "Freescale MPC834x SYS"
 	help
diff --git a/arch/ppc/platforms/lite5200.c b/arch/ppc/platforms/lite5200.c
index 5171b53..d91efe1 100644
--- a/arch/ppc/platforms/lite5200.c
+++ b/arch/ppc/platforms/lite5200.c
@@ -34,6 +34,7 @@
 #include <asm/mpc52xx.h>
 #include <asm/ppc_sys.h>
 #include <asm/machdep.h>
+#include <asm/pci-bridge.h>
 
 #include <syslib/mpc52xx_pci.h>
 
@@ -68,12 +69,32 @@ lite5200_show_cpuinfo(struct seq_file *m
 }
 
 #ifdef CONFIG_PCI
+#ifdef CONFIG_LITE5200B
+static int
+lite5200_map_irq(struct pci_dev *dev, unsigned char idsel,
+		    unsigned char pin)
+{
+	static char pci_irq_table[][4] =
+	/*
+	 *      PCI IDSEL/INTPIN->INTLINE
+	 *        A             B             C             D
+	 */
+	{
+		{MPC52xx_IRQ0, MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3},
+		{MPC52xx_IRQ1, MPC52xx_IRQ2, MPC52xx_IRQ3, MPC52xx_IRQ0},
+	};
+
+	const long min_idsel = 24, max_idsel = 25, irqs_per_slot = 4;
+	return PCI_IRQ_TABLE_LOOKUP;
+}
+#else /* Original Lite */
 static int
 lite5200_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
 {
 	return (pin == 1) && (idsel==24) ? MPC52xx_IRQ0 : -1;
 }
 #endif
+#endif
 
 static void __init
 lite5200_setup_cpu(void)
@@ -127,11 +148,17 @@ lite5200_setup_cpu(void)
 	out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_SNOOP);
 	out_be32(&xlb->snoop_window, MPC52xx_PCI_TARGET_MEM | 0x1d);
 
-	/* IRQ[0-3] setup : IRQ0     - Level Active Low  */
-	/*                  IRQ[1-3] - Level Active High */
+	/* IRQ[0-3] setup */
 	intr_ctrl = in_be32(&intr->ctrl);
 	intr_ctrl &= ~0x00ff0000;
-	intr_ctrl |=  0x00c00000;
+#ifdef CONFIG_LITE5200B
+	/* IRQ[0-3] Level Active Low */
+	intr_ctrl |=  0x00ff0000;
+#else
+	/* IRQ0 Level Active Low
+	 * IRQ[1-3] Level Active High */
+ 	intr_ctrl |=  0x00c00000;
+#endif
 	out_be32(&intr->ctrl, intr_ctrl);
 
 	/* Unmap reg zone */