TI TPS65950 driver, right now about all it can do is control LEDs
This commit is contained in:
jmcneill
parent
cd6325cba1
commit
72dd8faac9
@ -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
|
||||
|
||||
243
sys/dev/i2c/tps65950.c
Normal file
243
sys/dev/i2c/tps65950.c
Normal file
@ -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>
|
||||
* 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;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user