sni_emmc.c revision 1.1 
1/*	$NetBSD: sni_emmc.c,v 1.1 2020/03/18 03:33:49 nisimura Exp $	*/
2
3/*-
4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Tohru Nishimura.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * Socionext SC2A11 SynQuacer eMMC driver
34 */
35
36#include <sys/cdefs.h>
37__KERNEL_RCSID(0, "$NetBSD: sni_emmc.c,v 1.1 2020/03/18 03:33:49 nisimura Exp $");
38
39#include <sys/param.h>
40#include <sys/bus.h>
41#include <sys/intr.h>
42#include <sys/device.h>
43#include <sys/errno.h>
44#include <sys/kernel.h>
45#include <sys/systm.h>
46
47#include <machine/endian.h>
48
49#include <dev/fdt/fdtvar.h>
50#include <dev/acpi/acpireg.h>
51#include <dev/acpi/acpivar.h>
52
53static int sniemmc_fdt_match(device_t, struct cfdata *, void *);
54static void sniemmc_fdt_attach(device_t, device_t, void *);
55static int sniemmc_acpi_match(device_t, struct cfdata *, void *);
56static void sniemmc_acpi_attach(device_t, device_t, void *);
57
58struct sniemmc_softc {
59	device_t sc_dev;
60};
61
62CFATTACH_DECL_NEW(sniemmc_fdt, sizeof(struct sniemmc_softc),
63    sniemmc_fdt_match, sniemmc_fdt_attach, NULL, NULL);
64
65CFATTACH_DECL_NEW(sniemmc_acpi, sizeof(struct sniemmc_softc),
66    sniemmc_acpi_match, sniemmc_acpi_attach, NULL, NULL);
67
68static int sniemmc_attach_i(struct sniemmc_softc *);
69
70static int
71sniemmc_fdt_match(device_t parent, struct cfdata *match, void *aux)
72{
73	static const char * compatible[] = {
74		"socionext,synquacer-sdhci",
75		"fujitsu,mb86s70-sdhci-3.0",
76		NULL
77	};
78	struct fdt_attach_args * const faa = aux;
79
80	return of_match_compatible(faa->faa_phandle, compatible);
81}
82
83static void
84sniemmc_fdt_attach(device_t parent, device_t self, void *aux)
85{
86	struct sniemmc_softc * const sc = device_private(self);
87	int error;
88
89	error = sniemmc_attach_i(sc);
90	(void)error;
91}
92
93static int
94sniemmc_acpi_match(device_t parent, struct cfdata *match, void *aux)
95{
96	static const char * compatible[] = {
97		"SCX0002",
98		NULL
99	};
100	struct acpi_attach_args *aa = aux;
101
102	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
103		return 0;
104	return acpi_match_hid(aa->aa_node->ad_devinfo, compatible);
105}
106
107static void
108sniemmc_acpi_attach(device_t parent, device_t self, void *aux)
109{
110	struct sniemmc_softc * const sc = device_private(self);
111	int error;
112
113	error = sniemmc_attach_i(sc);
114	(void)error;
115}
116
117static int
118sniemmc_attach_i(struct sniemmc_softc *sc)
119{
120	return 0;
121}
122