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Export a little more from the omap2 prcm driver.

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This is in anticipation of drivers that need to enable (and, for
future power management, perhaps disable) modules on an SoC.  Each
SoC has a different notion of enabling and disabling modules and will
need to implement prcm_module_enable and prcm_module_disable
separately.
This commit is contained in:
riastradh 2012-12-11 18:51:38 +00:00
parent 7175086342
commit d2477942b2
2 changed files with 29 additions and 17 deletions
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21
sys/arch/arm/omap/omap2_prcm.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: omap2_prcm.c,v 1.3 2012/01/31 04:31:37 matt Exp $ */
/* $NetBSD: omap2_prcm.c,v 1.4 2012/12/11 18:51:38 riastradh Exp $ */
/*-
* Copyright (c) 2010 Adam Hoka
@ -28,7 +28,7 @@
#include "opt_omap.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: omap2_prcm.c,v 1.3 2012/01/31 04:31:37 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: omap2_prcm.c,v 1.4 2012/12/11 18:51:38 riastradh Exp $");
#include <sys/param.h>
#include <sys/device.h>
@ -77,6 +77,7 @@ prcm_attach(device_t parent, device_t self, void *aux)
{
struct obio_attach_args *obio = aux;
KASSERT(prcm_sc == NULL);
prcm_sc = device_private(self);
prcm_sc->sc_dev = self;
@ -95,16 +96,20 @@ prcm_attach(device_t parent, device_t self, void *aux)
aprint_normal(": Power, Reset and Clock Management\n");
}
static uint32_t
prcm_read(bus_addr_t module, bus_addr_t reg)
uint32_t
prcm_read_4(bus_size_t module, bus_size_t reg)
{
KASSERT(prcm_sc != NULL);
return bus_space_read_4(prcm_sc->sc_iot, prcm_sc->sc_ioh,
module + reg);
}
static void
prcm_write(bus_addr_t module, bus_addr_t reg, uint32_t data)
void
prcm_write_4(bus_size_t module, bus_size_t reg, uint32_t data)
{
KASSERT(prcm_sc != NULL);
bus_space_write_4(prcm_sc->sc_iot, prcm_sc->sc_ioh,
module + reg, data);
}
@ -114,9 +119,9 @@ prcm_cold_reset(void)
{
uint32_t val;
val = prcm_read(OMAP3430_GR_MOD, OMAP2_RM_RSTCTRL);
val = prcm_read_4(OMAP3430_GR_MOD, OMAP2_RM_RSTCTRL);
val |= OMAP_RST_DPLL3;
prcm_write(OMAP3430_GR_MOD, OMAP2_RM_RSTCTRL, val);
prcm_write_4(OMAP3430_GR_MOD, OMAP2_RM_RSTCTRL, val);
}

17
sys/arch/arm/omap/omap2_prcm.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: omap2_prcm.h,v 1.1 2010/08/28 13:02:32 ahoka Exp $ */
/* $NetBSD: omap2_prcm.h,v 1.2 2012/12/11 18:51:38 riastradh Exp $ */
/*-
* Copyright (c) 2010 Adam Hoka
@ -26,9 +26,16 @@
* SUCH DAMAGE.
*/
#ifndef _OMAP2_PRCM_H_
#define _OMAP2_PRCM_H_
#ifndef _ARM_OMAP_OMAP2_PRCM_H_
#define _ARM_OMAP_OMAP2_PRCM_H_
void prcm_cold_reset(void);
struct omap_module;
#endif
uint32_t prcm_read_4(bus_size_t, bus_size_t);
void prcm_write_4(bus_size_t, bus_size_t, uint32_t);
void prcm_cold_reset(void);
void prcm_module_enable(const struct omap_module *);
void prcm_module_disable(const struct omap_module *);
#endif /* _ARM_OMAP_OMAP2_PRCM_H_ */