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Differential D23718 Diff 68417 sys/arm/broadcom/bcm2835/bcm2835_cpufreq.c

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sys/arm/broadcom/bcm2835/bcm2835_cpufreq.c

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VC_UNLOCK(sc); VC_UNLOCK(sc);
/* add human readable temperature to dev.cpu node */ /* add human readable temperature to dev.cpu node */
cpu = device_get_parent(sc->dev); cpu = device_get_parent(sc->dev);
if (cpu != NULL) { if (cpu != NULL) {
ctx = device_get_sysctl_ctx(cpu); ctx = device_get_sysctl_ctx(cpu);
SYSCTL_ADD_PROC(ctx, SYSCTL_ADD_PROC(ctx,
SYSCTL_CHILDREN(device_get_sysctl_tree(cpu)), OID_AUTO, SYSCTL_CHILDREN(device_get_sysctl_tree(cpu)), OID_AUTO,
"temperature", CTLTYPE_INT | CTLFLAG_RD, sc, 0, "temperature",
CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
sysctl_bcm2835_devcpu_temperature, "IK", sysctl_bcm2835_devcpu_temperature, "IK",
"Current SoC temperature"); "Current SoC temperature");
} }
/* release this hook (continue boot) */ /* release this hook (continue boot) */
config_intrhook_disestablish(&sc->init_hook); config_intrhook_disestablish(&sc->init_hook);
} }
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sc->min_voltage_core = 0; sc->min_voltage_core = 0;
/* setup sysctl at first device */ /* setup sysctl at first device */
if (device_get_unit(dev) == 0) { if (device_get_unit(dev) == 0) {
sysctl_ctx_init(&bcm2835_sysctl_ctx); sysctl_ctx_init(&bcm2835_sysctl_ctx);
/* create node for hw.cpufreq */ /* create node for hw.cpufreq */
oid = SYSCTL_ADD_NODE(&bcm2835_sysctl_ctx, oid = SYSCTL_ADD_NODE(&bcm2835_sysctl_ctx,
SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, "cpufreq", SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, "cpufreq",
CTLFLAG_RD, NULL, ""); CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
/* Frequency (Hz) */ /* Frequency (Hz) */
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "arm_freq", CTLTYPE_INT | CTLFLAG_RW, sc, 0, OID_AUTO, "arm_freq",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
sysctl_bcm2835_cpufreq_arm_freq, "IU", sysctl_bcm2835_cpufreq_arm_freq, "IU",
"ARM frequency (Hz)"); "ARM frequency (Hz)");
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "core_freq", CTLTYPE_INT | CTLFLAG_RW, sc, 0, OID_AUTO, "core_freq",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
sysctl_bcm2835_cpufreq_core_freq, "IU", sysctl_bcm2835_cpufreq_core_freq, "IU",
"Core frequency (Hz)"); "Core frequency (Hz)");
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "sdram_freq", CTLTYPE_INT | CTLFLAG_RW, sc, 0, OID_AUTO, "sdram_freq",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
sysctl_bcm2835_cpufreq_sdram_freq, "IU", sysctl_bcm2835_cpufreq_sdram_freq, "IU",
"SDRAM frequency (Hz)"); "SDRAM frequency (Hz)");
/* Turbo state */ /* Turbo state */
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "turbo", CTLTYPE_INT | CTLFLAG_RW, sc, 0, OID_AUTO, "turbo",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
sysctl_bcm2835_cpufreq_turbo, "IU", sysctl_bcm2835_cpufreq_turbo, "IU",
"Disables dynamic clocking"); "Disables dynamic clocking");
/* Voltage (offset from 1.2V in units of 0.025V) */ /* Voltage (offset from 1.2V in units of 0.025V) */
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "voltage_core", CTLTYPE_INT | CTLFLAG_RW, sc, 0, OID_AUTO, "voltage_core",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc, 0,
sysctl_bcm2835_cpufreq_voltage_core, "I", sysctl_bcm2835_cpufreq_voltage_core, "I",
"ARM/GPU core voltage" "ARM/GPU core voltage"
"(offset from 1.2V in units of 0.025V)"); "(offset from 1.2V in units of 0.025V)");
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "voltage_sdram", CTLTYPE_INT | CTLFLAG_WR, sc, OID_AUTO, "voltage_sdram",
CTLTYPE_INT | CTLFLAG_WR | CTLFLAG_NEEDGIANT, sc,
0, sysctl_bcm2835_cpufreq_voltage_sdram, "I", 0, sysctl_bcm2835_cpufreq_voltage_sdram, "I",
"SDRAM voltage (offset from 1.2V in units of 0.025V)"); "SDRAM voltage (offset from 1.2V in units of 0.025V)");
/* Voltage individual SDRAM */ /* Voltage individual SDRAM */
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "voltage_sdram_c", CTLTYPE_INT | CTLFLAG_RW, sc, OID_AUTO, "voltage_sdram_c",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
0, sysctl_bcm2835_cpufreq_voltage_sdram_c, "I", 0, sysctl_bcm2835_cpufreq_voltage_sdram_c, "I",
"SDRAM controller voltage" "SDRAM controller voltage"
"(offset from 1.2V in units of 0.025V)"); "(offset from 1.2V in units of 0.025V)");
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "voltage_sdram_i", CTLTYPE_INT | CTLFLAG_RW, sc, OID_AUTO, "voltage_sdram_i",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
0, sysctl_bcm2835_cpufreq_voltage_sdram_i, "I", 0, sysctl_bcm2835_cpufreq_voltage_sdram_i, "I",
"SDRAM I/O voltage (offset from 1.2V in units of 0.025V)"); "SDRAM I/O voltage (offset from 1.2V in units of 0.025V)");
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "voltage_sdram_p", CTLTYPE_INT | CTLFLAG_RW, sc, OID_AUTO, "voltage_sdram_p",
CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, sc,
0, sysctl_bcm2835_cpufreq_voltage_sdram_p, "I", 0, sysctl_bcm2835_cpufreq_voltage_sdram_p, "I",
"SDRAM phy voltage (offset from 1.2V in units of 0.025V)"); "SDRAM phy voltage (offset from 1.2V in units of 0.025V)");
/* Temperature */ /* Temperature */
SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid), SYSCTL_ADD_PROC(&bcm2835_sysctl_ctx, SYSCTL_CHILDREN(oid),
OID_AUTO, "temperature", CTLTYPE_INT | CTLFLAG_RD, sc, 0, OID_AUTO, "temperature",
CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, 0,
sysctl_bcm2835_cpufreq_temperature, "I", sysctl_bcm2835_cpufreq_temperature, "I",
"SoC temperature (thousandths of a degree C)"); "SoC temperature (thousandths of a degree C)");
} }
/* ARM->VC lock */ /* ARM->VC lock */
sema_init(&vc_sema, 1, "vcsema"); sema_init(&vc_sema, 1, "vcsema");
/* register callback for using mbox when interrupts are enabled */ /* register callback for using mbox when interrupts are enabled */
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