0e47ff1ce6
This renames pci flags functions and enums in preparation for creating generic version in asm-generic/pci-bridge.h. The following search and replace is done: s/ppc_pci_/pci_/ s/PPC_PCI_/PCI_/ Direct accesses to ppc_pci_flag variable are replaced with helper functions. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org>
134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/*
|
|
* This contain platform specific code for APM PPC460EX based Canyonlands
|
|
* board.
|
|
*
|
|
* Copyright (c) 2010, Applied Micro Circuits Corporation
|
|
* Author: Rupjyoti Sarmah <rsarmah@apm.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <asm/pci-bridge.h>
|
|
#include <asm/ppc4xx.h>
|
|
#include <asm/udbg.h>
|
|
#include <asm/uic.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/delay.h>
|
|
#include "44x.h"
|
|
|
|
#define BCSR_USB_EN 0x11
|
|
|
|
static __initdata struct of_device_id ppc460ex_of_bus[] = {
|
|
{ .compatible = "ibm,plb4", },
|
|
{ .compatible = "ibm,opb", },
|
|
{ .compatible = "ibm,ebc", },
|
|
{ .compatible = "simple-bus", },
|
|
{},
|
|
};
|
|
|
|
static int __init ppc460ex_device_probe(void)
|
|
{
|
|
of_platform_bus_probe(NULL, ppc460ex_of_bus, NULL);
|
|
|
|
return 0;
|
|
}
|
|
machine_device_initcall(canyonlands, ppc460ex_device_probe);
|
|
|
|
/* Using this code only for the Canyonlands board. */
|
|
|
|
static int __init ppc460ex_probe(void)
|
|
{
|
|
unsigned long root = of_get_flat_dt_root();
|
|
if (of_flat_dt_is_compatible(root, "amcc,canyonlands")) {
|
|
pci_set_flags(PCI_REASSIGN_ALL_RSRC);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* USB PHY fixup code on Canyonlands kit. */
|
|
|
|
static int __init ppc460ex_canyonlands_fixup(void)
|
|
{
|
|
u8 __iomem *bcsr ;
|
|
void __iomem *vaddr;
|
|
struct device_node *np;
|
|
int ret = 0;
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "amcc,ppc460ex-bcsr");
|
|
if (!np) {
|
|
printk(KERN_ERR "failed did not find amcc, ppc460ex bcsr node\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
bcsr = of_iomap(np, 0);
|
|
of_node_put(np);
|
|
|
|
if (!bcsr) {
|
|
printk(KERN_CRIT "Could not remap bcsr\n");
|
|
ret = -ENODEV;
|
|
goto err_bcsr;
|
|
}
|
|
|
|
np = of_find_compatible_node(NULL, NULL, "ibm,ppc4xx-gpio");
|
|
if (!np) {
|
|
printk(KERN_ERR "failed did not find ibm,ppc4xx-gpio node\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
vaddr = of_iomap(np, 0);
|
|
of_node_put(np);
|
|
|
|
if (!vaddr) {
|
|
printk(KERN_CRIT "Could not get gpio node address\n");
|
|
ret = -ENODEV;
|
|
goto err_gpio;
|
|
}
|
|
/* Disable USB, through the BCSR7 bits */
|
|
setbits8(&bcsr[7], BCSR_USB_EN);
|
|
|
|
/* Wait for a while after reset */
|
|
msleep(100);
|
|
|
|
/* Enable USB here */
|
|
clrbits8(&bcsr[7], BCSR_USB_EN);
|
|
|
|
/*
|
|
* Configure multiplexed gpio16 and gpio19 as alternate1 output
|
|
* source after USB reset. In this configuration gpio16 will be
|
|
* USB2HStop and gpio19 will be USB2DStop. For more details refer to
|
|
* table 34-7 of PPC460EX user manual.
|
|
*/
|
|
setbits32((vaddr + GPIO0_OSRH), 0x42000000);
|
|
setbits32((vaddr + GPIO0_TSRH), 0x42000000);
|
|
err_gpio:
|
|
iounmap(vaddr);
|
|
err_bcsr:
|
|
iounmap(bcsr);
|
|
return ret;
|
|
}
|
|
machine_device_initcall(canyonlands, ppc460ex_canyonlands_fixup);
|
|
define_machine(canyonlands) {
|
|
.name = "Canyonlands",
|
|
.probe = ppc460ex_probe,
|
|
.progress = udbg_progress,
|
|
.init_IRQ = uic_init_tree,
|
|
.get_irq = uic_get_irq,
|
|
.restart = ppc4xx_reset_system,
|
|
.calibrate_decr = generic_calibrate_decr,
|
|
};
|