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Convert the imx6_snvs RTC driver to access registers via the syscon device.

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This is required for it to work correctly in the GENERIC kernel.
This commit is contained in:
Ian Lepore 2020-11-25 19:10:20 +00:00
parent 253dde678e
commit 0ffeeb414f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=368029
2 changed files with 7 additions and 11 deletions
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17
sys/arm/freescale/imx/imx6_snvs.c
View File

@ -45,6 +45,7 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/ofw_bus_subr.h>
#include "clock_if.h"
#include "syscon_if.h"
#define SNVS_LPCR 0x38 /* Control register */
#define LPCR_LPCALB_VAL_SHIFT 10 /* Calibration shift */
@ -68,13 +69,12 @@ __FBSDID("$FreeBSD$");
struct snvs_softc {
device_t dev;
struct resource * memres;
struct syscon *syscon;
uint32_t lpcr;
};
static struct ofw_compat_data compat_data[] = {
{"fsl,sec-v4.0-mon-rtc-lp", true},
{"fsl,sec-v4.0-mon", true},
{NULL, false}
};
@ -82,14 +82,14 @@ static inline uint32_t
RD4(struct snvs_softc *sc, bus_size_t offset)
{
return (bus_read_4(sc->memres, offset));
return (SYSCON_READ_4(sc->syscon, offset));
}
static inline void
WR4(struct snvs_softc *sc, bus_size_t offset, uint32_t value)
{
bus_write_4(sc->memres, offset, value);
SYSCON_WRITE_4(sc->syscon, offset, value);
}
static void
@ -187,16 +187,12 @@ static int
snvs_attach(device_t dev)
{
struct snvs_softc *sc;
int rid;
sc = device_get_softc(dev);
sc->dev = dev;
rid = 0;
sc->memres = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->memres == NULL) {
device_printf(sc->dev, "could not allocate registers\n");
if (syscon_get_handle_default(sc->dev, &sc->syscon) != 0) {
device_printf(sc->dev, "Cannot get syscon handle\n");
return (ENXIO);
}
@ -212,7 +208,6 @@ snvs_detach(device_t dev)
sc = device_get_softc(dev);
clock_unregister(sc->dev);
bus_release_resource(sc->dev, SYS_RES_MEMORY, 0, sc->memres);
return (0);
}

1
sys/modules/imx/imx6_snvs/Makefile
View File

@ -11,5 +11,6 @@ SRCS+= \
clock_if.h \
device_if.h \
ofw_bus_if.h \
syscon_if.h \
.include <bsd.kmod.mk>