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/*
* arch/powerpc/platforms/83xx/mpc834x_mds.c
*
* MPC834x MDS board specific routines
*
* Maintainer: Kumar Gala <galak@kernel.crashing.org>
*
* 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.
*/
#include <linux/stddef.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/reboot.h>
#include <linux/pci.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <asm/system.h>
#include <asm/atomic.h>
#include <asm/time.h>
#include <asm/io.h>
#include <asm/machdep.h>
#include <asm/ipic.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/udbg.h>
#include <sysdev/fsl_soc.h>
#include "mpc83xx.h"
#ifndef CONFIG_PCI
unsigned long isa_io_base = 0;
unsigned long isa_mem_base = 0;
#endif
#define BCSR5_INT_USB 0x02
/* Note: This is only for PB, not for PB+PIB
* On PB only port0 is connected using ULPI */
static int mpc834x_usb_cfg(void)
{
unsigned long sccr, sicrl;
void __iomem *immap;
void __iomem *bcsr_regs = NULL;
u8 bcsr5;
struct device_node *np = NULL;
int port0_is_dr = 0;
if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL)
port0_is_dr = 1;
if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL){
if (port0_is_dr) {
printk(KERN_WARNING
"There is only one USB port on PB board! \n");
return -1;
} else if (!port0_is_dr)
/* No usb port enabled */
return -1;
}
immap = ioremap(get_immrbase(), 0x1000);
if (!immap)
return -1;
/* Configure clock */
sccr = in_be32(immap + MPC83XX_SCCR_OFFS);
if (port0_is_dr)
sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
else
sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */
out_be32(immap + MPC83XX_SCCR_OFFS, sccr);
/* Configure Pin */
sicrl = in_be32(immap + MPC83XX_SICRL_OFFS);
/* set port0 only */
if (port0_is_dr)
sicrl |= MPC83XX_SICRL_USB0;
else
sicrl &= ~(MPC83XX_SICRL_USB0);
out_be32(immap + MPC83XX_SICRL_OFFS, sicrl);
iounmap(immap);
/* Map BCSR area */
np = of_find_node_by_name(NULL, "bcsr");
if (np != 0) {
struct resource res;
of_address_to_resource(np, 0, &res);
bcsr_regs = ioremap(res.start, res.end - res.start + 1);
of_node_put(np);
}
if (!bcsr_regs)
return -1;
/*
* if MDS board is plug into PIB board,
* force to use the PHY on MDS board
*/
bcsr5 = in_8(bcsr_regs + 5);
if (!(bcsr5 & BCSR5_INT_USB))
out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
iounmap(bcsr_regs);
return 0;
}
/* ************************************************************************
*
* Setup the architecture
*
*/
static void __init mpc834x_mds_setup_arch(void)
{
struct device_node *np;
if (ppc_md.progress)
ppc_md.progress("mpc834x_mds_setup_arch()", 0);
#ifdef CONFIG_PCI
for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
add_bridge(np);
ppc_md.pci_exclude_device = mpc83xx_exclude_device;
#endif
mpc834x_usb_cfg();
}
static void __init mpc834x_mds_init_IRQ(void)
{
struct device_node *np;
np = of_find_node_by_type(NULL, "ipic");
if (!np)
return;
ipic_init(np, 0);
/* Initialize the default interrupt mapping priorities,
* in case the boot rom changed something on us.
*/
ipic_set_default_priority();
}
#if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
extern ulong ds1374_get_rtc_time(void);
extern int ds1374_set_rtc_time(ulong);
static int __init mpc834x_rtc_hookup(void)
{
struct timespec tv;
if (!machine_is(mpc834x_mds))
return 0;
ppc_md.get_rtc_time = ds1374_get_rtc_time;
ppc_md.set_rtc_time = ds1374_set_rtc_time;
tv.tv_nsec = 0;
tv.tv_sec = (ppc_md.get_rtc_time) ();
do_settimeofday(&tv);
return 0;
}
late_initcall(mpc834x_rtc_hookup);
#endif
/*
* Called very early, MMU is off, device-tree isn't unflattened
*/
static int __init mpc834x_mds_probe(void)
{
unsigned long root = of_get_flat_dt_root();
return of_flat_dt_is_compatible(root, "MPC834xMDS");
}
define_machine(mpc834x_mds) {
.name = "MPC834x MDS",
.probe = mpc834x_mds_probe,
.setup_arch = mpc834x_mds_setup_arch,
.init_IRQ = mpc834x_mds_init_IRQ,
.get_irq = ipic_get_irq,
.restart = mpc83xx_restart,
.time_init = mpc83xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
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