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[src/trunk]: src/sys/dev/i2c TI TPS65950 driver, right now about all it can d...
details: https://anonhg.NetBSD.org/src/rev/d5f5a604214f
branches: trunk
changeset: 783604:d5f5a604214f
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Mon Dec 31 13:26:42 2012 +0000
description:
TI TPS65950 driver, right now about all it can do is control LEDs
diffstat:
sys/dev/i2c/files.i2c | 7 +-
sys/dev/i2c/tps65950.c | 243 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 249 insertions(+), 1 deletions(-)
diffs (265 lines):
diff -r 4c2218502d43 -r d5f5a604214f sys/dev/i2c/files.i2c
--- a/sys/dev/i2c/files.i2c Mon Dec 31 13:20:16 2012 +0000
+++ b/sys/dev/i2c/files.i2c Mon Dec 31 13:26:42 2012 +0000
@@ -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 @@
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 -r 4c2218502d43 -r d5f5a604214f sys/dev/i2c/tps65950.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/i2c/tps65950.c Mon Dec 31 13:26:42 2012 +0000
@@ -0,0 +1,243 @@
+/* $NetBSD: tps65950.c,v 1.1 2012/12/31 13:26:42 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2012 Jared D. McNeill <jmcneill%invisible.ca@localhost>
+ * 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 <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: tps65950.c,v 1.1 2012/12/31 13:26:42 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/conf.h>
+#include <sys/bus.h>
+#include <sys/kmem.h>
+#include <sys/sysctl.h>
+
+#include <dev/i2c/i2cvar.h>
+
+/* 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;
+}
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