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Differential D5298 Diff 13364 head/sys/arm/allwinner/axp209.c

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head/sys/arm/allwinner/axp209.c

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#include <sys/module.h> #include <sys/module.h>
#include <sys/clock.h> #include <sys/clock.h>
#include <sys/time.h> #include <sys/time.h>
#include <sys/bus.h> #include <sys/bus.h>
#include <sys/proc.h> #include <sys/proc.h>
#include <sys/reboot.h> #include <sys/reboot.h>
#include <sys/resource.h> #include <sys/resource.h>
#include <sys/rman.h> #include <sys/rman.h>
#include <sys/sysctl.h>
#include <dev/iicbus/iicbus.h> #include <dev/iicbus/iicbus.h>
#include <dev/iicbus/iiconf.h> #include <dev/iicbus/iiconf.h>
#include <dev/ofw/openfirm.h> #include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_bus.h> #include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h> #include <dev/ofw/ofw_bus_subr.h>
#include "iicbus_if.h" #include "iicbus_if.h"
/* Power State Register */ /* Power State Register */
#define AXP209_PSR 0x00 #define AXP209_PSR 0x00
#define AXP209_PSR_ACIN 0x80 #define AXP209_PSR_ACIN 0x80
#define AXP209_PSR_ACIN_SHIFT 7 #define AXP209_PSR_ACIN_SHIFT 7
#define AXP209_PSR_VBUS 0x20 #define AXP209_PSR_VBUS 0x20
#define AXP209_PSR_VBUS_SHIFT 5 #define AXP209_PSR_VBUS_SHIFT 5
/* Shutdown and battery control */ /* Shutdown and battery control */
#define AXP209_SHUTBAT 0x32 #define AXP209_SHUTBAT 0x32
#define AXP209_SHUTBAT_SHUTDOWN 0x80 #define AXP209_SHUTBAT_SHUTDOWN 0x80
/* Temperature monitor */
#define AXP209_TEMPMON 0x5e
#define AXP209_TEMPMON_H(a) ((a) << 4)
#define AXP209_TEMPMON_L(a) ((a) & 0xf)
#define AXP209_TEMPMON_MIN 1447 /* -144.7C */
#define AXP209_0C_TO_K 2732
struct axp209_softc { struct axp209_softc {
uint32_t addr; uint32_t addr;
struct intr_config_hook enum_hook; struct intr_config_hook enum_hook;
}; };
enum axp209_sensor {
AXP209_TEMP
};
static int static int
axp209_read(device_t dev, uint8_t reg, uint8_t *data, uint8_t size) axp209_read(device_t dev, uint8_t reg, uint8_t *data, uint8_t size)
{ {
struct axp209_softc *sc = device_get_softc(dev); struct axp209_softc *sc = device_get_softc(dev);
struct iic_msg msg[2]; struct iic_msg msg[2];
msg[0].slave = sc->addr; msg[0].slave = sc->addr;
msg[0].flags = IIC_M_WR; msg[0].flags = IIC_M_WR;
Show All 21 Linesaxp209_write(device_t dev, uint8_t reg, uint8_t data)
msg.slave = sc->addr; msg.slave = sc->addr;
msg.flags = IIC_M_WR; msg.flags = IIC_M_WR;
msg.len = 2; msg.len = 2;
msg.buf = buffer; msg.buf = buffer;
return (iicbus_transfer(dev, &msg, 1)); return (iicbus_transfer(dev, &msg, 1));
} }
static int
axp209_sysctl(SYSCTL_HANDLER_ARGS)
{
device_t dev = arg1;
enum axp209_sensor sensor = arg2;
uint8_t data[2];
int val, error;
if (sensor != AXP209_TEMP)
return (ENOENT);
error = axp209_read(dev, AXP209_TEMPMON, data, 2);
if (error != 0)
return (error);
/* Temperature is between -144.7C and 264.8C, step +0.1C */
val = (AXP209_TEMPMON_H(data[0]) | AXP209_TEMPMON_L(data[1])) -
AXP209_TEMPMON_MIN + AXP209_0C_TO_K;
return sysctl_handle_opaque(oidp, &val, sizeof(val), req);
}
static void static void
axp209_shutdown(void *devp, int howto) axp209_shutdown(void *devp, int howto)
{ {
device_t dev; device_t dev;
if (!(howto & RB_POWEROFF)) if (!(howto & RB_POWEROFF))
return; return;
dev = (device_t)devp; dev = (device_t)devp;
▲ Show 20 Lines • Show All 42 Lines • ▼ Show 20 Lines pwr_src = ((data & AXP209_PSR_ACIN) >> AXP209_PSR_ACIN_SHIFT) |
((data & AXP209_PSR_VBUS) >> (AXP209_PSR_VBUS_SHIFT - 1)); ((data & AXP209_PSR_VBUS) >> (AXP209_PSR_VBUS_SHIFT - 1));
device_printf(dev, "AXP209 Powered by %s\n", device_printf(dev, "AXP209 Powered by %s\n",
pwr_name[pwr_src]); pwr_name[pwr_src]);
} }
EVENTHANDLER_REGISTER(shutdown_final, axp209_shutdown, dev, EVENTHANDLER_REGISTER(shutdown_final, axp209_shutdown, dev,
SHUTDOWN_PRI_LAST); SHUTDOWN_PRI_LAST);
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
OID_AUTO, "temp",
CTLTYPE_INT | CTLFLAG_RD,
dev, AXP209_TEMP, axp209_sysctl, "IK", "Internal temperature");
return (0); return (0);
} }
static device_method_t axp209_methods[] = { static device_method_t axp209_methods[] = {
DEVMETHOD(device_probe, axp209_probe), DEVMETHOD(device_probe, axp209_probe),
DEVMETHOD(device_attach, axp209_attach), DEVMETHOD(device_attach, axp209_attach),
{0, 0}, {0, 0},
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