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-rw-r--r--sys/dev/i2c/fcu.c184
-rw-r--r--sys/dev/i2c/files.i2c7
2 files changed, 190 insertions, 1 deletions
diff --git a/sys/dev/i2c/fcu.c b/sys/dev/i2c/fcu.c
new file mode 100644
index 00000000000..d38c686d35b
--- /dev/null
+++ b/sys/dev/i2c/fcu.c
@@ -0,0 +1,184 @@
+/* $OpenBSD: fcu.c,v 1.1 2005/11/16 18:51:45 deraadt Exp $ */
+
+/*
+ * Copyright (c) 2005 Mark Kettenis
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/sensors.h>
+
+#include <dev/i2c/i2cvar.h>
+
+/* FCU registers */
+#define FCU_FAN_FAIL 0x0b /* fans states in bits 0<1-6>7 */
+#define FCU_FAN_ACTIVE 0x0d
+#define FCU_FANREAD(x) 0x11 + (x)*2
+#define FCU_FANSET(x) 0x10 + (x)*2
+#define FCU_PWM_FAIL 0x2b
+#define FCU_PWM_ACTIVE 0x2d
+#define FCU_PWMREAD(x) 0x30 + (x)*2
+
+/* Sensors */
+#define FCU_RPM1 0
+#define FCU_RPM2 1
+#define FCU_RPM3 2
+#define FCU_RPM4 3
+#define FCU_RPM5 4
+#define FCU_RPM6 5
+#define FCU_FANS 6
+#define FCU_PWM1 6
+#define FCU_PWM2 7
+#define FCU_PWMS 2
+#define FCU_NUM_SENSORS 8
+
+struct fcu_softc {
+ struct device sc_dev;
+ i2c_tag_t sc_tag;
+ i2c_addr_t sc_addr;
+
+ struct sensor sc_sensor[FCU_NUM_SENSORS];
+};
+
+int fcu_match(struct device *, void *, void *);
+void fcu_attach(struct device *, struct device *, void *);
+
+void fcu_refresh(void *);
+
+struct cfattach fcu_ca = {
+ sizeof(struct fcu_softc), fcu_match, fcu_attach
+};
+
+struct cfdriver fcu_cd = {
+ NULL, "fcu", DV_DULL
+};
+
+int
+fcu_match(struct device *parent, void *match, void *aux)
+{
+ struct i2c_attach_args *ia = aux;
+
+ if (ia->ia_compat) {
+ if (strcmp(ia->ia_compat, "fcu") == 0)
+ return (1);
+ return (0);
+ }
+ return (0); /* Apple-only */
+}
+
+void
+fcu_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct fcu_softc *sc = (struct fcu_softc *)self;
+ struct i2c_attach_args *ia = aux;
+ int i;
+
+ sc->sc_tag = ia->ia_tag;
+ sc->sc_addr = ia->ia_addr;
+
+ /* Initialize sensor data. */
+ for (i = 0; i < FCU_FANS; i++) {
+ strlcpy(sc->sc_sensor[i].device, sc->sc_dev.dv_xname,
+ sizeof(sc->sc_sensor[i].device));
+ sc->sc_sensor[i].type = SENSOR_FANRPM;
+ snprintf(sc->sc_sensor[i].desc,
+ sizeof(sc->sc_sensor[i].desc), "FAN%d", i);
+ }
+ for (i = 0; i < FCU_PWMS; i++) {
+ strlcpy(sc->sc_sensor[FCU_PWM1 + i].device, sc->sc_dev.dv_xname,
+ sizeof(sc->sc_sensor[FCU_PWM1 + i].device));
+ sc->sc_sensor[FCU_PWM1 + i].type = SENSOR_FANRPM;
+ snprintf(sc->sc_sensor[FCU_PWM1 + i].desc,
+ sizeof(sc->sc_sensor[FCU_PWM1 + i].desc), "PWM%d", i);
+ }
+
+ if (sensor_task_register(sc, fcu_refresh, 5)) {
+ printf(", unable to register update task\n");
+ return;
+ }
+
+ for (i = 0; i < FCU_NUM_SENSORS; i++)
+ SENSOR_ADD(&sc->sc_sensor[i]);
+
+ printf("\n");
+}
+
+void
+fcu_refresh(void *arg)
+{
+ struct fcu_softc *sc = arg;
+ u_int8_t cmd, fail, fan[2], active;
+ int i;
+
+ iic_acquire_bus(sc->sc_tag, 0);
+
+ cmd = FCU_FAN_FAIL;
+ if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
+ sc->sc_addr, &cmd, sizeof cmd, &fail, sizeof fail, 0))
+ goto abort;
+ cmd = FCU_FAN_ACTIVE;
+ if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
+ sc->sc_addr, &cmd, sizeof cmd, &active, sizeof active, 0))
+ goto abort;
+ fail &= active;
+
+ for (i = 0; i < FCU_FANS; i++) {
+ if (fail & (1 << (i + 1)))
+ sc->sc_sensor[i].flags |= SENSOR_FINVALID;
+ else
+ sc->sc_sensor[i].flags &= ~SENSOR_FINVALID;
+ }
+
+ cmd = FCU_PWM_FAIL;
+ if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
+ sc->sc_addr, &cmd, sizeof cmd, &fail, sizeof fail, 0))
+ goto abort;
+ cmd = FCU_PWM_ACTIVE;
+ if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
+ sc->sc_addr, &cmd, sizeof cmd, &active, sizeof active, 0))
+ goto abort;
+ fail &= active;
+
+ for (i = 0; i < FCU_PWMS; i++) {
+ if (fail & (1 << (i + 1)))
+ sc->sc_sensor[FCU_PWMS + i].flags |= SENSOR_FINVALID;
+ else
+ sc->sc_sensor[FCU_PWMS + i].flags &= ~SENSOR_FINVALID;
+ }
+
+ for (i = 0; i < FCU_FANS; i++) {
+ cmd = FCU_FANREAD(i + 1);
+ if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
+ sc->sc_addr, &cmd, sizeof cmd, &fan, sizeof fan, 0)) {
+ sc->sc_sensor[FCU_RPM1 + i].flags |= SENSOR_FINVALID;
+ continue;
+ }
+ sc->sc_sensor[FCU_RPM1 + i].value = (fan[0] << 5) | (fan[1] >> 3);
+ }
+
+ for (i = 0; i < FCU_PWMS; i++) {
+ cmd = FCU_PWMREAD(i + 1);
+ if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
+ sc->sc_addr, &cmd, sizeof cmd, &fan, sizeof fan, 0)) {
+ sc->sc_sensor[FCU_PWM1 + i].flags |= SENSOR_FINVALID;
+ continue;
+ }
+ sc->sc_sensor[FCU_PWM1 + i].value = (fan[0] * 1000) / 2559;
+ }
+
+abort:
+ iic_release_bus(sc->sc_tag, 0);
+}
diff --git a/sys/dev/i2c/files.i2c b/sys/dev/i2c/files.i2c
index c39404762f3..84ba3ced648 100644
--- a/sys/dev/i2c/files.i2c
+++ b/sys/dev/i2c/files.i2c
@@ -1,4 +1,4 @@
-# $OpenBSD: files.i2c,v 1.13 2005/11/16 06:26:14 deraadt Exp $
+# $OpenBSD: files.i2c,v 1.14 2005/11/16 18:51:45 deraadt Exp $
# $NetBSD: files.i2c,v 1.3 2003/10/20 16:24:10 briggs Exp $
define i2c {[addr = -1], [size = -1]}
@@ -53,3 +53,8 @@ file dev/i2c/pca9554.c pcagpio
device maxds: gpiobus
attach maxds at i2c
file dev/i2c/ds1631.c maxds
+
+# Apple FCU
+device fcu: gpiobus
+attach fcu at i2c
+file dev/i2c/fcu.c fcu