ar71xx: add initial support for 3.2

Tested on the following boards:
  ALFA AP96
  TL-MR3220 v1
  TL-WR1043ND v1
  TL-WR2543ND v1
  TL-WR703N v1
  TL-WR741ND v1
  TL-WR741ND v4
  WNDR3700 v1
  WZR-HP-G300NH

SVN-Revision: 29868

1 files changed, 164 insertions, 0 deletions

diff --git a/target/linux/ar71xx/patches-3.2/117-MIPS-ath79-allow-to-use-SoC-specific-PCI-IRQ-maps.patch b/target/linux/ar71xx/patches-3.2/117-MIPS-ath79-allow-to-use-SoC-specific-PCI-IRQ-maps.patch
new file mode 100644
index 0000000000..251de55e54
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.2/117-MIPS-ath79-allow-to-use-SoC-specific-PCI-IRQ-maps.patch
@@ -0,0 +1,164 @@
+From 8a1a5852aa7f8cfc027b2b0bb51cbbac4309e144 Mon Sep 17 00:00:00 2001
+From: Gabor Juhos <juhosg@openwrt.org>
+Date: Sun, 20 Nov 2011 14:32:09 +0100
+Subject: [PATCH 17/35] MIPS: ath79: allow to use SoC specific PCI IRQ maps
+
+The PCI controllers in the AR71XX and in the
+AR724X SoCs are different, and both of them
+uses different IRQ wiring.
+
+The patch modifies the 'pcibios_map_irq' function
+in order to allow to use different IRQ maps for
+the different SoCs. The patch also adds a function,
+which lets the board setup code to override the
+default IRQ map.
+
+Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
+
+v2: - no changes
+---
+ arch/mips/ath79/pci.c |   72 ++++++++++++++++++++++++++++++++++++++++++++++---
+ arch/mips/ath79/pci.h |    9 ++++++
+ 2 files changed, 77 insertions(+), 4 deletions(-)
+
+--- a/arch/mips/ath79/pci.c
++++ b/arch/mips/ath79/pci.c
+@@ -8,6 +8,7 @@
+  *  by the Free Software Foundation.
+  */
+ 
++#include <linux/init.h>
+ #include <linux/pci.h>
+ #include <asm/mach-ath79/ath79.h>
+ #include <asm/mach-ath79/irq.h>
+@@ -15,9 +16,35 @@
+ #include "pci.h"
+ 
+ static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
++static const struct ath79_pci_irq *ath79_pci_irq_map __initdata;
++static unsigned ath79_pci_nr_irqs __initdata;
+ static struct ar724x_pci_data *pci_data;
+ static int pci_data_size;
+ 
++static const struct ath79_pci_irq ar71xx_pci_irq_map[] __initconst = {
++	{
++		.slot	= 17,
++		.pin	= 1,
++		.irq	= ATH79_PCI_IRQ(0),
++	}, {
++		.slot	= 18,
++		.pin	= 1,
++		.irq	= ATH79_PCI_IRQ(1),
++	}, {
++		.slot	= 19,
++		.pin	= 1,
++		.irq	= ATH79_PCI_IRQ(2),
++	}
++};
++
++static const struct ath79_pci_irq ar724x_pci_irq_map[] __initconst = {
++	{
++		.slot	= 0,
++		.pin	= 1,
++		.irq	= ATH79_PCI_IRQ(0),
++	}
++};
++
+ void ar724x_pci_add_data(struct ar724x_pci_data *data, int size)
+ {
+ 	pci_data	= data;
+@@ -26,13 +53,40 @@ void ar724x_pci_add_data(struct ar724x_p
+ 
+ int __init pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
+ {
+-	unsigned int devfn = dev->devfn;
+ 	int irq = -1;
++	int i;
+ 
+-	if (devfn > pci_data_size - 1)
+-		return irq;
+-
+-	irq = pci_data[devfn].irq;
++	if (ath79_pci_nr_irqs == 0 ||
++	    ath79_pci_irq_map == NULL) {
++		if (soc_is_ar71xx()) {
++			ath79_pci_irq_map = ar71xx_pci_irq_map;
++			ath79_pci_nr_irqs = ARRAY_SIZE(ar71xx_pci_irq_map);
++		} else if (soc_is_ar724x()) {
++			ath79_pci_irq_map = ar724x_pci_irq_map;
++			ath79_pci_nr_irqs = ARRAY_SIZE(ar724x_pci_irq_map);
++		} else {
++			pr_crit("pci %s: invalid irq map\n",
++				pci_name((struct pci_dev *) dev));
++			return irq;
++		}
++	}
++
++	for (i = 0; i < ath79_pci_nr_irqs; i++) {
++		const struct ath79_pci_irq *entry;
++
++		entry = &ath79_pci_irq_map[i];
++		if (entry->slot == slot && entry->pin == pin) {
++			irq = entry->irq;
++			break;
++		}
++	}
++
++	if (irq < 0)
++		pr_crit("pci %s: no irq found for pin %u\n",
++			pci_name((struct pci_dev *) dev), pin);
++	else
++		pr_info("pci %s: using irq %d for pin %u\n",
++			pci_name((struct pci_dev *) dev), irq, pin);
+ 
+ 	return irq;
+ }
+@@ -45,6 +99,13 @@ int pcibios_plat_dev_init(struct pci_dev
+ 	return 0;
+ }
+ 
++void __init ath79_pci_set_irq_map(unsigned nr_irqs,
++				  const struct ath79_pci_irq *map)
++{
++	ath79_pci_nr_irqs = nr_irqs;
++	ath79_pci_irq_map = map;
++}
++
+ void __init ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev))
+ {
+ 	ath79_pci_plat_dev_init = func;
+@@ -52,6 +113,9 @@ void __init ath79_pci_set_plat_dev_init(
+ 
+ int __init ath79_register_pci(void)
+ {
++	if (soc_is_ar71xx())
++		return ar71xx_pcibios_init();
++
+ 	if (soc_is_ar724x())
+ 		return ar724x_pcibios_init(ATH79_CPU_IRQ_IP2);
+ 
+--- a/arch/mips/ath79/pci.h
++++ b/arch/mips/ath79/pci.h
+@@ -15,13 +15,22 @@ struct ar724x_pci_data {
+ 	int irq;
+ };
+ 
++struct ath79_pci_irq {
++	u8	slot;
++	u8	pin;
++	int	irq;
++};
++
+ void ar724x_pci_add_data(struct ar724x_pci_data *data, int size);
+ 
+ #ifdef CONFIG_PCI
++void ath79_pci_set_irq_map(unsigned nr_irqs, const struct ath79_pci_irq *map);
+ void ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev));
+ int ath79_register_pci(void);
+ #else
+ static inline void
++ath79_pci_set_irq_map(unsigned nr_irqs, const struct ath79_pci_irq *map) {}
++static inline void
+ ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *)) {}
+ static inline int ath79_register_pci(void) { return 0; }
+ #endif