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ssb: Fix watchdog access for devices without a chipcommon

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This fixes the SSB watchdog access for devices without a chipcommon.
These devices have the watchdog on the extif.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Michael Buesch 2008-02-19 12:41:30 +01:00 committed by John W. Linville
parent 58ff70d4fe
commit 42bfad4f71
7 changed files with 63 additions and 0 deletions
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6
drivers/ssb/Kconfig
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@ -105,6 +105,12 @@ config SSB_DRIVER_MIPS
If unsure, say N
# Assumption: We are on embedded, if we compile the MIPS core.
config SSB_EMBEDDED
bool
depends on SSB_DRIVER_MIPS
default y
config SSB_DRIVER_EXTIF
bool "SSB Broadcom EXTIF core driver (EXPERIMENTAL)"
depends on SSB_DRIVER_MIPS && EXPERIMENTAL

1
drivers/ssb/Makefile
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@ -1,5 +1,6 @@
# core
ssb-y += main.o scan.o
ssb-$(CONFIG_SSB_EMBEDDED) += embedded.o
# host support
ssb-$(CONFIG_SSB_PCIHOST) += pci.o pcihost_wrapper.o

6
drivers/ssb/driver_extif.c
View File

@ -110,6 +110,12 @@ void ssb_extif_get_clockcontrol(struct ssb_extif *extif,
*m = extif_read32(extif, SSB_EXTIF_CLOCK_SB);
}
void ssb_extif_watchdog_timer_set(struct ssb_extif *extif,
u32 ticks)
{
extif_write32(extif, SSB_EXTIF_WATCHDOG, ticks);
}
u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask)
{
return extif_read32(extif, SSB_EXTIF_GPIO_IN) & mask;

26
drivers/ssb/embedded.c Normal file
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@ -0,0 +1,26 @@
/*
* Sonics Silicon Backplane
* Embedded systems support code
*
* Copyright 2005-2008, Broadcom Corporation
* Copyright 2006-2008, Michael Buesch <mb@bu3sch.de>
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
#include <linux/ssb/ssb.h>
#include <linux/ssb/ssb_embedded.h>
int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks)
{
if (ssb_chipco_available(&bus->chipco)) {
ssb_chipco_watchdog_timer_set(&bus->chipco, ticks);
return 0;
}
if (ssb_extif_available(&bus->extif)) {
ssb_extif_watchdog_timer_set(&bus->extif, ticks);
return 0;
}
return -ENODEV;
}

5
include/linux/ssb/ssb_driver_chipcommon.h
View File

@ -360,6 +360,11 @@ struct ssb_chipcommon {
u16 fast_pwrup_delay;
};
static inline bool ssb_chipco_available(struct ssb_chipcommon *cc)
{
return (cc->dev != NULL);
}
extern void ssb_chipcommon_init(struct ssb_chipcommon *cc);
#include <linux/pm.h>

9
include/linux/ssb/ssb_driver_extif.h
View File

@ -171,6 +171,9 @@ extern void ssb_extif_get_clockcontrol(struct ssb_extif *extif,
extern void ssb_extif_timing_init(struct ssb_extif *extif,
unsigned long ns);
extern void ssb_extif_watchdog_timer_set(struct ssb_extif *extif,
u32 ticks);
u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask);
void ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value);
@ -200,5 +203,11 @@ void ssb_extif_get_clockcontrol(struct ssb_extif *extif,
{
}
static inline
void ssb_extif_watchdog_timer_set(struct ssb_extif *extif,
u32 ticks)
{
}
#endif /* CONFIG_SSB_DRIVER_EXTIF */
#endif /* LINUX_SSB_EXTIFCORE_H_ */

10
include/linux/ssb/ssb_embedded.h Normal file
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@ -0,0 +1,10 @@
#ifndef LINUX_SSB_EMBEDDED_H_
#define LINUX_SSB_EMBEDDED_H_
#include <linux/types.h>
#include <linux/ssb/ssb.h>
extern int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks);
#endif /* LINUX_SSB_EMBEDDED_H_ */