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Commit e2dbdc43 authored by Gabor Juhos's avatar Gabor Juhos Committed by Ralf Baechle
Browse files

MIPS: ath79: separate common PCI code 



The 'pcibios_map_irq' and 'pcibios_plat_dev_init'
are common functions and only instance one of them
can be present in a single kernel.

Currently these functions can be built only if the
CONFIG_SOC_AR724X option is selected. However the
ath79 platform contain support for the AR71XX SoCs,.
The AR71XX SoCs have a differnet PCI controller,
and those will require a different code.

Move the common PCI code into a separeate file in
order to be able to use that with other SoCs as
well.

Signed-off-by: default avatarGabor Juhos <juhosg@openwrt.org>
Acked-by: default avatarRené Bolldorf <xsecute@googlemail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3485/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 97bf7a19

arch/mips/ath79/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
obj-y	:= prom.o setup.o irq.o common.o clock.o gpio.o



obj-$(CONFIG_EARLY_PRINTK)		+= early_printk.o

obj-$(CONFIG_PCI)			+= pci.o



#

# Devices

arch/mips/ath79/pci.c

0 → 100644
+46 −0
Original line number Diff line number Diff line 
/*

 *  Atheros AR71XX/AR724X specific PCI setup code

 *

 *  Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com>

 *

 *  This program is free software; you can redistribute it and/or modify it

 *  under the terms of the GNU General Public License version 2 as published

 *  by the Free Software Foundation.

 */



#include <linux/pci.h>

#include <asm/mach-ath79/pci-ath724x.h>



static struct ath724x_pci_data *pci_data;

static int pci_data_size;



void ath724x_pci_add_data(struct ath724x_pci_data *data, int size)

{

	pci_data	= data;

	pci_data_size	= size;

}



int __init pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)

{

	unsigned int devfn = dev->devfn;

	int irq = -1;



	if (devfn > pci_data_size - 1)

		return irq;



	irq = pci_data[devfn].irq;



	return irq;

}



int pcibios_plat_dev_init(struct pci_dev *dev)

{

	unsigned int devfn = dev->devfn;



	if (devfn > pci_data_size - 1)

		return PCIBIOS_DEVICE_NOT_FOUND;



	dev->dev.platform_data = pci_data[devfn].pdata;



	return PCIBIOS_SUCCESSFUL;

}

arch/mips/pci/pci-ath724x.c

+0 −34
Original line number Diff line number Diff line
@@ -9,7 +9,6 @@ 
 */



#include <linux/pci.h>

#include <asm/mach-ath79/pci-ath724x.h>



#define reg_read(_phys)		(*(unsigned int *) KSEG1ADDR(_phys))

#define reg_write(_phys, _val)	((*(unsigned int *) KSEG1ADDR(_phys)) = (_val))
@@ -19,8 +18,6 @@ 
#define ATH724X_PCI_MEM_SIZE	0x08000000



static DEFINE_SPINLOCK(ath724x_pci_lock);

static struct ath724x_pci_data *pci_data;

static int pci_data_size;



static int ath724x_pci_read(struct pci_bus *bus, unsigned int devfn, int where,

			    int size, uint32_t *value)
@@ -133,37 +130,6 @@ static struct pci_controller ath724x_pci_controller = { 
	.mem_resource	= &ath724x_mem_resource,

};



void ath724x_pci_add_data(struct ath724x_pci_data *data, int size)

{

	pci_data	= data;

	pci_data_size	= size;

}



int __init pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)

{

	unsigned int devfn = dev->devfn;

	int irq = -1;



	if (devfn > pci_data_size - 1)

		return irq;



	irq = pci_data[devfn].irq;



	return irq;

}



int pcibios_plat_dev_init(struct pci_dev *dev)

{

	unsigned int devfn = dev->devfn;



	if (devfn > pci_data_size - 1)

		return PCIBIOS_DEVICE_NOT_FOUND;



	dev->dev.platform_data = pci_data[devfn].pdata;



	return PCIBIOS_SUCCESSFUL;

}



static int __init ath724x_pcibios_init(void)

{

	register_pci_controller(&ath724x_pci_controller);