summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/platforms/83xx/mpc832x_rdb.c
blob: d4bd04001b99567035247758b1d22919955b56ae (plain)
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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
/*
 * arch/powerpc/platforms/83xx/mpc832x_rdb.c
 *
 * Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved.
 *
 * Description:
 * MPC832x RDB board specific routines.
 * This file is based on mpc832x_mds.c and mpc8313_rdb.c
 * Author: Michael Barkowski <michael.barkowski@freescale.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/spi/spi.h>
#include <linux/spi/mmc_spi.h>
#include <linux/mmc/host.h>

#include <asm/of_platform.h>
#include <asm/time.h>
#include <asm/ipic.h>
#include <asm/udbg.h>
#include <asm/qe.h>
#include <asm/qe_ic.h>
#include <sysdev/fsl_soc.h>

#include "mpc83xx.h"

#undef DEBUG
#ifdef DEBUG
#define DBG(fmt...) udbg_printf(fmt)
#else
#define DBG(fmt...)
#endif

static void mpc83xx_spi_activate_cs(u8 cs, u8 polarity)
{
	pr_debug("%s %d %d\n", __func__, cs, polarity);
	par_io_data_set(3, 13, polarity);
}

static void mpc83xx_spi_deactivate_cs(u8 cs, u8 polarity)
{
	pr_debug("%s %d %d\n", __func__, cs, polarity);
	par_io_data_set(3, 13, !polarity);
}

static struct mmc_spi_platform_data mpc832x_mmc_pdata = {
	.ocr_mask = MMC_VDD_33_34,
};

static struct spi_board_info mpc832x_spi_boardinfo = {
	.bus_num = 0x4c0,
	.chip_select = 0,
	.max_speed_hz = 50000000,
	.modalias = "mmc_spi",
	.platform_data = &mpc832x_mmc_pdata,
};

static int __init mpc832x_spi_init(void)
{
	if (!machine_is(mpc832x_rdb))
		return 0;

	par_io_config_pin(3,  0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */
	par_io_config_pin(3,  1, 3, 0, 1, 0); /* SPI1 MISO, I/O */
	par_io_config_pin(3,  2, 3, 0, 1, 0); /* SPI1 CLK,  I/O */
	par_io_config_pin(3,  3, 2, 0, 1, 0); /* SPI1 SEL,  I   */

	par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS,    O */
	par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */
	par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */

	return fsl_spi_init(&mpc832x_spi_boardinfo, 1,
			    mpc83xx_spi_activate_cs,
			    mpc83xx_spi_deactivate_cs);
}

device_initcall(mpc832x_spi_init);

/* ************************************************************************
 *
 * Setup the architecture
 *
 */
static void __init mpc832x_rdb_setup_arch(void)
{
#if defined(CONFIG_PCI) || defined(CONFIG_QUICC_ENGINE)
	struct device_node *np;
#endif

	if (ppc_md.progress)
		ppc_md.progress("mpc832x_rdb_setup_arch()", 0);

#ifdef CONFIG_PCI
	for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
		mpc83xx_add_bridge(np);
#endif

#ifdef CONFIG_QUICC_ENGINE
	qe_reset();

	if ((np = of_find_node_by_name(np, "par_io")) != NULL) {
		par_io_init(np);
		of_node_put(np);

		for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
			par_io_of_config(np);
	}
#endif				/* CONFIG_QUICC_ENGINE */
}

static struct of_device_id mpc832x_ids[] = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .type = "qe", },
	{},
};

static int __init mpc832x_declare_of_platform_devices(void)
{
	if (!machine_is(mpc832x_rdb))
		return 0;

	/* Publish the QE devices */
	of_platform_bus_probe(NULL, mpc832x_ids, NULL);

	return 0;
}
device_initcall(mpc832x_declare_of_platform_devices);

void __init mpc832x_rdb_init_IRQ(void)
{

	struct device_node *np;

	np = of_find_node_by_type(NULL, "ipic");
	if (!np)
		return;

	ipic_init(np, 0);

	/* Initialize the default interrupt mapping priorities,
	 * in case the boot rom changed something on us.
	 */
	ipic_set_default_priority();
	of_node_put(np);

#ifdef CONFIG_QUICC_ENGINE
	np = of_find_node_by_type(NULL, "qeic");
	if (!np)
		return;

	qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
	of_node_put(np);
#endif				/* CONFIG_QUICC_ENGINE */
}

/*
 * Called very early, MMU is off, device-tree isn't unflattened
 */
static int __init mpc832x_rdb_probe(void)
{
	unsigned long root = of_get_flat_dt_root();

	return of_flat_dt_is_compatible(root, "MPC832xRDB");
}

define_machine(mpc832x_rdb) {
	.name		= "MPC832x RDB",
	.probe		= mpc832x_rdb_probe,
	.setup_arch	= mpc832x_rdb_setup_arch,
	.init_IRQ	= mpc832x_rdb_init_IRQ,
	.get_irq	= ipic_get_irq,
	.restart	= mpc83xx_restart,
	.time_init	= mpc83xx_time_init,
	.calibrate_decr	= generic_calibrate_decr,
	.progress	= udbg_progress,
};
OpenPOWER on IntegriCloud