Module Name: src Committed By: jmcneill Date: Wed Nov 11 12:35:22 UTC 2015
Modified Files: src/sys/dev/i2c: files.i2c Added Files: src/sys/dev/i2c: as3722.c as3722.h Log Message: Add basic driver for AMS AS3722 power management IC To generate a diff of this commit: cvs rdiff -u -r0 -r1.1 src/sys/dev/i2c/as3722.c src/sys/dev/i2c/as3722.h cvs rdiff -u -r1.66 -r1.67 src/sys/dev/i2c/files.i2c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/dev/i2c/files.i2c diff -u src/sys/dev/i2c/files.i2c:1.66 src/sys/dev/i2c/files.i2c:1.67 --- src/sys/dev/i2c/files.i2c:1.66 Wed Oct 21 09:03:13 2015 +++ src/sys/dev/i2c/files.i2c Wed Nov 11 12:35:22 2015 @@ -1,4 +1,4 @@ -# $NetBSD: files.i2c,v 1.66 2015/10/21 09:03:13 jmcneill Exp $ +# $NetBSD: files.i2c,v 1.67 2015/11/11 12:35:22 jmcneill Exp $ obsolete defflag opt_i2cbus.h I2C_SCAN define i2cbus { } @@ -250,3 +250,8 @@ file dev/i2c/act8846.c act8846pm needs device titemp: sysmon_envsys attach titemp at iic file dev/i2c/titemp.c titemp + +# AMS AS3722 Power Management IC +device as3722pmic +attach as3722pmic at iic +file dev/i2c/as3722.c as3722pmic needs-flag Added files: Index: src/sys/dev/i2c/as3722.c diff -u /dev/null src/sys/dev/i2c/as3722.c:1.1 --- /dev/null Wed Nov 11 12:35:22 2015 +++ src/sys/dev/i2c/as3722.c Wed Nov 11 12:35:22 2015 @@ -0,0 +1,130 @@ +/* $NetBSD: as3722.c,v 1.1 2015/11/11 12:35:22 jmcneill Exp $ */ + +/*- + * Copyright (c) 2015 Jared D. McNeill <jmcne...@invisible.ca> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__KERNEL_RCSID(0, "$NetBSD: as3722.c,v 1.1 2015/11/11 12:35:22 jmcneill Exp $"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/device.h> +#include <sys/conf.h> +#include <sys/bus.h> +#include <sys/kmem.h> + +#include <dev/i2c/i2cvar.h> +#include <dev/i2c/as3722.h> + +#define AS3722_RESET_CTRL_REG 0x36 +#define AS3722_RESET_CTRL_POWER_OFF __BIT(1) + +#define AS3722_ASIC_ID1_REG 0x90 +#define AS3722_ASIC_ID2_REG 0x91 + +struct as3722_softc { + device_t sc_dev; + i2c_tag_t sc_i2c; + i2c_addr_t sc_addr; +}; + +static int as3722_match(device_t, cfdata_t, void *); +static void as3722_attach(device_t, device_t, void *); + +#if 0 +static int as3722_read(struct as3722_softc *, uint8_t, uint8_t *, int); +#endif +static int as3722_write(struct as3722_softc *, uint8_t, uint8_t, int); + +CFATTACH_DECL_NEW(as3722pmic, sizeof(struct as3722_softc), + as3722_match, as3722_attach, NULL, NULL); + +static int +as3722_match(device_t parent, cfdata_t match, void *aux) +{ + struct i2c_attach_args *ia = aux; + uint8_t reg, id1; + int error; + + iic_acquire_bus(ia->ia_tag, I2C_F_POLL); + reg = AS3722_ASIC_ID1_REG; + error = iic_exec(ia->ia_tag, I2C_OP_READ_WITH_STOP, ia->ia_addr, + ®, 1, &id1, 1, I2C_F_POLL); + iic_release_bus(ia->ia_tag, I2C_F_POLL); + + if (error == 0 && id1 == 0x0c) + return 1; + + return 0; +} + +static void +as3722_attach(device_t parent, device_t self, void *aux) +{ + struct as3722_softc * const sc = device_private(self); + struct i2c_attach_args *ia = aux; + + sc->sc_dev = self; + sc->sc_i2c = ia->ia_tag; + sc->sc_addr = ia->ia_addr; + + aprint_naive("\n"); + aprint_normal(": AMS AS3822\n"); +} + +#if 0 +static int +as3722_read(struct as3722_softc *sc, uint8_t reg, uint8_t *val, int flags) +{ + return iic_exec(sc->sc_i2c, I2C_OP_READ_WITH_STOP, sc->sc_addr, + ®, 1, val, 1, flags); +} +#endif + +static int +as3722_write(struct as3722_softc *sc, uint8_t reg, uint8_t val, int flags) +{ + uint8_t buf[2] = { reg, val }; + return iic_exec(sc->sc_i2c, I2C_OP_WRITE_WITH_STOP, sc->sc_addr, + NULL, 0, buf, 2, flags); +} + +int +as3722_poweroff(device_t dev) +{ + struct as3722_softc * const sc = device_private(dev); + int error; + + const int flags = I2C_F_POLL; + + iic_acquire_bus(sc->sc_i2c, flags); + error = as3722_write(sc, AS3722_RESET_CTRL_REG, + AS3722_RESET_CTRL_POWER_OFF, flags); + iic_release_bus(sc->sc_i2c, flags); + + return error; +} Index: src/sys/dev/i2c/as3722.h diff -u /dev/null src/sys/dev/i2c/as3722.h:1.1 --- /dev/null Wed Nov 11 12:35:22 2015 +++ src/sys/dev/i2c/as3722.h Wed Nov 11 12:35:22 2015 @@ -0,0 +1,34 @@ +/* $NetBSD: as3722.h,v 1.1 2015/11/11 12:35:22 jmcneill Exp $ */ + +/*- + * Copyright (c) 2015 Jared D. McNeill <jmcne...@invisible.ca> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _DEV_I2C_AS3722_H +#define _DEV_I2C_AS3722_H + +int as3722_poweroff(device_t); + +#endif /* !_DEV_I2C_AS3722_H */