1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* $OpenBSD: imxpd.c,v 1.1 2018/05/02 15:17:30 patrick Exp $ */
/*
* Copyright (c) 2018 Patrick Wildt <patrick@blueri.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/cpufunc.h>
#include <machine/fdt.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_power.h>
#define FSL_SIP_GPC 0xc2000000
#define FSL_SIP_CONFIG_GPC_PM_DOMAIN 0x03
struct imxpd_softc {
struct device sc_dev;
struct power_domain_device sc_pd;
int sc_domain_id;
};
int imxpd_match(struct device *, void *, void *);
void imxpd_attach(struct device *, struct device *, void *);
void imxpd_enable(void *, uint32_t *, int);
struct cfattach imxpd_ca = {
sizeof (struct imxpd_softc), imxpd_match, imxpd_attach
};
struct cfdriver imxpd_cd = {
NULL, "imxpd", DV_DULL
};
int
imxpd_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
return OF_is_compatible(faa->fa_node, "fsl,imx8mq-pm-domain");
}
void
imxpd_attach(struct device *parent, struct device *self, void *aux)
{
struct imxpd_softc *sc = (struct imxpd_softc *)self;
struct fdt_attach_args *faa = aux;
sc->sc_domain_id = OF_getpropint(faa->fa_node, "domain-id", 0);
sc->sc_pd.pd_node = faa->fa_node;
sc->sc_pd.pd_cookie = sc;
sc->sc_pd.pd_enable = imxpd_enable;
power_domain_register(&sc->sc_pd);
printf("\n");
}
void
imxpd_enable(void *cookie, uint32_t *cells, int on)
{
struct imxpd_softc *sc = cookie;
/* Set up power domain */
smc_call(FSL_SIP_GPC, FSL_SIP_CONFIG_GPC_PM_DOMAIN,
sc->sc_domain_id, on);
}
|
