diff --git a/sys/dev/i2c/files.i2c b/sys/dev/i2c/files.i2c index 91e7648f1f51..7cfc2180313c 100644 --- a/sys/dev/i2c/files.i2c +++ b/sys/dev/i2c/files.i2c @@ -1,4 +1,4 @@ -# $NetBSD: files.i2c,v 1.45 2011/11/18 22:18:08 jmcneill Exp $ +# $NetBSD: files.i2c,v 1.46 2012/12/31 13:26:42 jmcneill Exp $ obsolete defflag opt_i2cbus.h I2C_SCAN define i2cbus { } @@ -171,3 +171,8 @@ file dev/i2c/g760a.c g760a device ibmhawk: sysmon_envsys attach ibmhawk at iic file dev/i2c/ibmhawk.c ibmhawk + +# TI TPS65950 OMAP Power Management and System Companion Device +device tps65950pm +attach tps65950pm at iic +file dev/i2c/tps65950.c tps65950pm diff --git a/sys/dev/i2c/tps65950.c b/sys/dev/i2c/tps65950.c new file mode 100644 index 000000000000..08bcc9dc5bc9 --- /dev/null +++ b/sys/dev/i2c/tps65950.c @@ -0,0 +1,243 @@ +/* $NetBSD: tps65950.c,v 1.1 2012/12/31 13:26:42 jmcneill Exp $ */ + +/*- + * Copyright (c) 2012 Jared D. McNeill + * 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. + */ + +/* + * TI TPS65950 OMAP Power Management and System Companion Device + */ + +#include +__KERNEL_RCSID(0, "$NetBSD: tps65950.c,v 1.1 2012/12/31 13:26:42 jmcneill Exp $"); + +#include +#include +#include +#include +#include +#include +#include + +#include + +/* I2C Bus Addressing */ +#define TPS65950_ADDR_ID1 0x48 /* GP */ +#define TPS65950_ADDR_ID2 0x49 /* GP */ +#define TPS65950_ADDR_ID3 0x4a /* GP */ +#define TPS65950_ADDR_ID4 0x4b /* GP */ +#define TPS65950_ADDR_ID5 0x12 /* SmartReflex */ + +#define TPS65950_ID2_IDCODE_7_0 0x85 +#define TPS65950_ID2_IDCODE_15_8 0x86 +#define TPS65950_ID2_IDCODE_23_16 0x87 +#define TPS65950_ID2_IDCODE_31_24 0x88 +#define TPS65950_ID2_UNLOCK_TEST_REG 0x97 +#define TPS65950_ID2_UNLOCK_TEST_REG_MAGIC 0x49 + +#define TPS65950_LED_BASE 0xee + +#define TPS65950_ID3_REG_LED (TPS65950_LED_BASE + 0) +#define TPS65950_ID3_REG_LED_LEDAON __BIT(0) +#define TPS65950_ID3_REG_LED_LEDBON __BIT(1) +#define TPS65950_ID3_REG_LED_LEDAPWM __BIT(4) +#define TPS65950_ID3_REG_LED_LEDBPWM __BIT(5) + +struct tps65950_softc { + device_t sc_dev; + i2c_tag_t sc_i2c; + i2c_addr_t sc_addr; + + struct sysctllog *sc_sysctllog; +}; + +static int tps65950_match(device_t, cfdata_t, void *); +static void tps65950_attach(device_t, device_t, void *); + +static int tps65950_read_1(struct tps65950_softc *, uint8_t, uint8_t *); +static int tps65950_write_1(struct tps65950_softc *, uint8_t, uint8_t); + +static void tps65950_sysctl_attach(struct tps65950_softc *); + +CFATTACH_DECL_NEW(tps65950pm, sizeof(struct tps65950_softc), + tps65950_match, tps65950_attach, NULL, NULL); + +static int +tps65950_match(device_t parent, cfdata_t match, void *aux) +{ + struct i2c_attach_args *ia = aux; + + switch (ia->ia_addr) { + case TPS65950_ADDR_ID1: + case TPS65950_ADDR_ID2: + case TPS65950_ADDR_ID3: + case TPS65950_ADDR_ID4: + case TPS65950_ADDR_ID5: + return 1; + default: + return 0; + } +} + +static void +tps65950_attach(device_t parent, device_t self, void *aux) +{ + struct tps65950_softc *sc = device_private(self); + struct i2c_attach_args *ia = aux; + uint8_t buf[4]; + uint32_t idcode; + + sc->sc_dev = self; + sc->sc_i2c = ia->ia_tag; + sc->sc_addr = ia->ia_addr; + + aprint_naive("\n"); + + switch (sc->sc_addr) { + case TPS65950_ADDR_ID2: + memset(buf, 0, sizeof(buf)); + tps65950_write_1(sc, TPS65950_ID2_UNLOCK_TEST_REG, + TPS65950_ID2_UNLOCK_TEST_REG_MAGIC); + tps65950_read_1(sc, TPS65950_ID2_IDCODE_7_0, &buf[0]); + tps65950_read_1(sc, TPS65950_ID2_IDCODE_15_8, &buf[1]); + tps65950_read_1(sc, TPS65950_ID2_IDCODE_23_16, &buf[2]); + tps65950_read_1(sc, TPS65950_ID2_IDCODE_31_24, &buf[3]); + idcode = (buf[0] << 0) | (buf[1] << 8) | + (buf[2] << 16) | (buf[3] << 24); + aprint_normal(": IDCODE %08X\n", idcode); + break; + case TPS65950_ADDR_ID3: + aprint_normal(": group %02x\n", sc->sc_addr); + tps65950_sysctl_attach(sc); + break; + default: + aprint_normal(": group %02x\n", sc->sc_addr); + break; + } +} + +static int +tps65950_read_1(struct tps65950_softc *sc, uint8_t reg, uint8_t *val) +{ + return iic_exec(sc->sc_i2c, I2C_OP_READ_WITH_STOP, sc->sc_addr, + ®, sizeof(reg), val, sizeof(*val), 0); +} + +static int +tps65950_write_1(struct tps65950_softc *sc, uint8_t reg, uint8_t val) +{ + uint8_t data[2] = { reg, val }; + return iic_exec(sc->sc_i2c, I2C_OP_WRITE_WITH_STOP, sc->sc_addr, + NULL, 0, data, sizeof(data), 0); +} + +static int +tps65950_sysctl_leda(SYSCTLFN_ARGS) +{ + struct tps65950_softc *sc; + struct sysctlnode node; + uint8_t val; + u_int leda; + int error; + + node = *rnode; + sc = node.sysctl_data; + error = tps65950_read_1(sc, TPS65950_ID3_REG_LED, &val); + if (error) + return error; + leda = (val & TPS65950_ID3_REG_LED_LEDAON) ? 1 : 0; + node.sysctl_data = &leda; + error = sysctl_lookup(SYSCTLFN_CALL(&node)); + if (error || newp == NULL) + return error; + + if (leda) + val |= (TPS65950_ID3_REG_LED_LEDAON|TPS65950_ID3_REG_LED_LEDAPWM); + else + val &= ~(TPS65950_ID3_REG_LED_LEDAON|TPS65950_ID3_REG_LED_LEDAPWM); + + return tps65950_write_1(sc, TPS65950_ID3_REG_LED, val); +} + +static int +tps65950_sysctl_ledb(SYSCTLFN_ARGS) +{ + struct tps65950_softc *sc; + struct sysctlnode node; + uint8_t val; + u_int ledb; + int error; + + node = *rnode; + sc = node.sysctl_data; + error = tps65950_read_1(sc, TPS65950_ID3_REG_LED, &val); + if (error) + return error; + ledb = (val & TPS65950_ID3_REG_LED_LEDBON) ? 1 : 0; + node.sysctl_data = &ledb; + error = sysctl_lookup(SYSCTLFN_CALL(&node)); + if (error || newp == NULL) + return error; + + if (ledb) + val |= (TPS65950_ID3_REG_LED_LEDBON|TPS65950_ID3_REG_LED_LEDBPWM); + else + val &= ~(TPS65950_ID3_REG_LED_LEDBON|TPS65950_ID3_REG_LED_LEDBPWM); + + return tps65950_write_1(sc, TPS65950_ID3_REG_LED, val); +} + +static void +tps65950_sysctl_attach(struct tps65950_softc *sc) +{ + struct sysctllog **log = &sc->sc_sysctllog; + const struct sysctlnode *rnode, *cnode; + int error; + + error = sysctl_createv(log, 0, NULL, &rnode, CTLFLAG_PERMANENT, + CTLTYPE_NODE, "hw", NULL, NULL, 0, NULL, 0, CTL_HW, CTL_EOL); + if (error) + return; + + error = sysctl_createv(log, 0, &rnode, &rnode, CTLFLAG_PERMANENT, + CTLTYPE_NODE, "tps65950", SYSCTL_DESCR("tps65950 control"), + NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL); + if (error) + return; + + error = sysctl_createv(log, 0, &rnode, &cnode, + CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "leda", + SYSCTL_DESCR("LEDA enable"), tps65950_sysctl_leda, 0, + (void *)sc, 0, CTL_CREATE, CTL_EOL); + if (error) + return; + + error = sysctl_createv(log, 0, &rnode, &cnode, + CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, "ledb", + SYSCTL_DESCR("LEDB enable"), tps65950_sysctl_ledb, 0, + (void *)sc, 0, CTL_CREATE, CTL_EOL); + if (error) + return; +}