psoc.c revision 1.1 1 1.1 macallan /* $NetBSD: psoc.c,v 1.1 2019/11/01 17:51:56 macallan Exp $ */
2 1.1 macallan
3 1.1 macallan /*-
4 1.1 macallan * Copyright (c) 2018 Michael Lorenz
5 1.1 macallan * All rights reserved.
6 1.1 macallan *
7 1.1 macallan * Redistribution and use in source and binary forms, with or without
8 1.1 macallan * modification, are permitted provided that the following conditions
9 1.1 macallan * are met:
10 1.1 macallan * 1. Redistributions of source code must retain the above copyright
11 1.1 macallan * notice, this list of conditions and the following disclaimer.
12 1.1 macallan * 2. Redistributions in binary form must reproduce the above copyright
13 1.1 macallan * notice, this list of conditions and the following disclaimer in the
14 1.1 macallan * documentation and/or other materials provided with the distribution.
15 1.1 macallan *
16 1.1 macallan * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 1.1 macallan * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 1.1 macallan * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 1.1 macallan * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 1.1 macallan * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 1.1 macallan * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 1.1 macallan * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 1.1 macallan * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 1.1 macallan * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 1.1 macallan * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 1.1 macallan * POSSIBILITY OF SUCH DAMAGE.
27 1.1 macallan */
28 1.1 macallan
29 1.1 macallan /*
30 1.1 macallan * fan controller found in 1GHz TiBook
31 1.1 macallan *
32 1.1 macallan * register values from OF:
33 1.1 macallan * fan1 - 0x20 ( status ), 0x31 ( data)
34 1.1 macallan * fan2 - 0x26 ( status ), 0x45 ( data )
35 1.1 macallan * fan3 - 0x59
36 1.1 macallan * temperature sensors start at 6, two bytes each, first appears to be
37 1.1 macallan * the temperature in degrees Celsius
38 1.1 macallan */
39 1.1 macallan
40 1.1 macallan #include <sys/cdefs.h>
41 1.1 macallan __KERNEL_RCSID(0, "$NetBSD: psoc.c,v 1.1 2019/11/01 17:51:56 macallan Exp $");
42 1.1 macallan
43 1.1 macallan #include <sys/param.h>
44 1.1 macallan #include <sys/systm.h>
45 1.1 macallan #include <sys/device.h>
46 1.1 macallan #include <sys/conf.h>
47 1.1 macallan #include <sys/bus.h>
48 1.1 macallan #include <sys/time.h>
49 1.1 macallan
50 1.1 macallan #include <dev/ofw/openfirm.h>
51 1.1 macallan
52 1.1 macallan #include <dev/i2c/i2cvar.h>
53 1.1 macallan
54 1.1 macallan #include <dev/sysmon/sysmonvar.h>
55 1.1 macallan
56 1.1 macallan struct psoc_softc {
57 1.1 macallan device_t sc_dev;
58 1.1 macallan i2c_tag_t sc_i2c;
59 1.1 macallan i2c_addr_t sc_addr;
60 1.1 macallan int sc_node;
61 1.1 macallan
62 1.1 macallan struct sysmon_envsys *sc_sme;
63 1.1 macallan envsys_data_t sc_sensors[7];
64 1.1 macallan int sc_nsensors;
65 1.1 macallan uint8_t sc_temp[16];
66 1.1 macallan time_t sc_last;
67 1.1 macallan };
68 1.1 macallan
69 1.1 macallan static int psoc_match(device_t, cfdata_t, void *);
70 1.1 macallan static void psoc_attach(device_t, device_t, void *);
71 1.1 macallan
72 1.1 macallan static void psoc_sensors_refresh(struct sysmon_envsys *, envsys_data_t *);
73 1.1 macallan
74 1.1 macallan CFATTACH_DECL_NEW(psoc, sizeof(struct psoc_softc),
75 1.1 macallan psoc_match, psoc_attach, NULL, NULL);
76 1.1 macallan
77 1.1 macallan static const struct device_compatible_entry compat_data[] = {
78 1.1 macallan { "Psoc", 0 },
79 1.1 macallan { NULL, 0 }
80 1.1 macallan };
81 1.1 macallan
82 1.1 macallan static int
83 1.1 macallan psoc_match(device_t parent, cfdata_t match, void *aux)
84 1.1 macallan {
85 1.1 macallan struct i2c_attach_args *ia = aux;
86 1.1 macallan int match_result;
87 1.1 macallan
88 1.1 macallan if (iic_use_direct_match(ia, match, compat_data, &match_result))
89 1.1 macallan return match_result;
90 1.1 macallan
91 1.1 macallan return 0;
92 1.1 macallan }
93 1.1 macallan
94 1.1 macallan static void
95 1.1 macallan psoc_attach(device_t parent, device_t self, void *aux)
96 1.1 macallan {
97 1.1 macallan struct psoc_softc *sc = device_private(self);
98 1.1 macallan struct i2c_attach_args *ia = aux;
99 1.1 macallan char path[256];
100 1.1 macallan envsys_data_t *s;
101 1.1 macallan int error, ih, r;
102 1.1 macallan
103 1.1 macallan sc->sc_dev = self;
104 1.1 macallan sc->sc_i2c = ia->ia_tag;
105 1.1 macallan sc->sc_addr = ia->ia_addr;
106 1.1 macallan sc->sc_node = ia->ia_cookie;
107 1.1 macallan sc->sc_last = 0;
108 1.1 macallan
109 1.1 macallan aprint_naive("\n");
110 1.1 macallan aprint_normal(": Psoc fan controller\n");
111 1.1 macallan
112 1.1 macallan error = OF_package_to_path(sc->sc_node, path, 256);
113 1.1 macallan path[error] = 0;
114 1.1 macallan printf("path [%s]\n", path);
115 1.1 macallan ih = OF_open("fan");
116 1.1 macallan OF_call_method_1("fan-init", ih, 0);
117 1.1 macallan printf("ih %08x\n", ih);
118 1.1 macallan
119 1.1 macallan sc->sc_sme = sysmon_envsys_create();
120 1.1 macallan sc->sc_sme->sme_name = device_xname(self);
121 1.1 macallan sc->sc_sme->sme_cookie = sc;
122 1.1 macallan sc->sc_sme->sme_refresh = psoc_sensors_refresh;
123 1.1 macallan sc->sc_nsensors = 0;
124 1.1 macallan
125 1.1 macallan int i, j;
126 1.1 macallan uint8_t data, cmd;
127 1.1 macallan for (i = 0; i < 0x7f; i+= 8) {
128 1.1 macallan printf("%02x:", i);
129 1.1 macallan for (j = 0; j < 8; j++) {
130 1.1 macallan cmd = i + j;
131 1.1 macallan data = 0;
132 1.1 macallan iic_exec(sc->sc_i2c, I2C_OP_READ_WITH_STOP,
133 1.1 macallan sc->sc_addr, &cmd, 1, &data, 1, 0);
134 1.1 macallan printf(" %02x", data);
135 1.1 macallan }
136 1.1 macallan printf("\n");
137 1.1 macallan }
138 1.1 macallan for (i = 0; i < 4; i++) {
139 1.1 macallan r = i * 2 + 6;
140 1.1 macallan s = &sc->sc_sensors[sc->sc_nsensors];
141 1.1 macallan s->state = ENVSYS_SINVALID;
142 1.1 macallan s->units = ENVSYS_STEMP;
143 1.1 macallan snprintf(s->desc, 16, "temp%d", i);
144 1.1 macallan s->private = r;
145 1.1 macallan sysmon_envsys_sensor_attach(sc->sc_sme, s);
146 1.1 macallan sc->sc_nsensors++;
147 1.1 macallan }
148 1.1 macallan #if 0
149 1.1 macallan for (r = 0x31; r < 0x50; r += 0x14) {
150 1.1 macallan s = &sc->sc_sensors[sc->sc_nsensors];
151 1.1 macallan s->state = ENVSYS_SINVALID;
152 1.1 macallan s->units = ENVSYS_SFANRPM;
153 1.1 macallan snprintf(s->desc, 16, "reg %02x", r);
154 1.1 macallan s->private = r;
155 1.1 macallan sysmon_envsys_sensor_attach(sc->sc_sme, s);
156 1.1 macallan sc->sc_nsensors++;
157 1.1 macallan }
158 1.1 macallan #endif
159 1.1 macallan sysmon_envsys_register(sc->sc_sme);
160 1.1 macallan }
161 1.1 macallan
162 1.1 macallan static void
163 1.1 macallan psoc_sensors_refresh(struct sysmon_envsys *sme, envsys_data_t *edata)
164 1.1 macallan {
165 1.1 macallan struct psoc_softc *sc = sme->sme_cookie;
166 1.1 macallan uint8_t cmd = 6;
167 1.1 macallan uint8_t buf[0x28];
168 1.1 macallan int error = 1, data, i;
169 1.1 macallan
170 1.1 macallan if ( edata->private < 0x20) {
171 1.1 macallan cmd = 0;
172 1.1 macallan if ((time_second - sc->sc_last) > 2) {
173 1.1 macallan iic_acquire_bus(sc->sc_i2c, 0);
174 1.1 macallan error = iic_exec(sc->sc_i2c, I2C_OP_READ_WITH_STOP,
175 1.1 macallan sc->sc_addr, &cmd, 1, sc->sc_temp, 16, 0);
176 1.1 macallan iic_release_bus(sc->sc_i2c, 0);
177 1.1 macallan if (error) return;
178 1.1 macallan sc->sc_last = time_second;
179 1.1 macallan }
180 1.1 macallan error = 0;
181 1.1 macallan if (edata->private > 0) {
182 1.1 macallan data = sc->sc_temp[edata->private];
183 1.1 macallan /* Celsius -> microkelvin */
184 1.1 macallan edata->value_cur = ((int)data * 1000000) + 273150000;
185 1.1 macallan }
186 1.1 macallan } else {
187 1.1 macallan cmd = 0x31;
188 1.1 macallan iic_acquire_bus(sc->sc_i2c, 0);
189 1.1 macallan error = iic_exec(sc->sc_i2c, I2C_OP_READ_WITH_STOP,
190 1.1 macallan sc->sc_addr, &cmd, 1, buf, 0x28, 0);
191 1.1 macallan iic_release_bus(sc->sc_i2c, 0);
192 1.1 macallan if (error) return;
193 1.1 macallan if (edata->private > 0) {
194 1.1 macallan data = buf[edata->private - 0x20];
195 1.1 macallan edata->value_cur = data;
196 1.1 macallan for (i = 0; i < 14; i++)
197 1.1 macallan printf(" %02x", buf[edata->private - 0x31 + i]);
198 1.1 macallan printf("\n");
199 1.1 macallan }
200 1.1 macallan }
201 1.1 macallan if (error) {
202 1.1 macallan edata->state = ENVSYS_SINVALID;
203 1.1 macallan } else {
204 1.1 macallan edata->state = ENVSYS_SVALID;
205 1.1 macallan }
206 1.1 macallan }
207