aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/plat-omap/devices.c
blob: 1e2383eae6383fd862dce6f5228763308c0cf30e (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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
/*
 * linux/arch/arm/plat-omap/devices.c
 *
 * Common platform device setup/initialization for OMAP1 and OMAP2
 *
 * 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>

#include <plat/tc.h>
#include <plat/board.h>
#include <plat/mmc.h>
#include <mach/gpio.h>
#include <plat/menelaus.h>
#include <plat/mcbsp.h>
#include <plat/omap44xx.h>

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)

static struct platform_device **omap_mcbsp_devices;

void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
					int size)
{
	int i;

	omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
				     GFP_KERNEL);
	if (!omap_mcbsp_devices) {
		printk(KERN_ERR "Could not register McBSP devices\n");
		return;
	}

	for (i = 0; i < size; i++) {
		struct platform_device *new_mcbsp;
		int ret;

		new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
		if (!new_mcbsp)
			continue;
		new_mcbsp->dev.platform_data = &config[i];
		ret = platform_device_add(new_mcbsp);
		if (ret) {
			platform_device_put(new_mcbsp);
			continue;
		}
		omap_mcbsp_devices[i] = new_mcbsp;
	}
}

#else
void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
					int size)
{  }
#endif

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_SND_OMAP_SOC_MCPDM) || \
		defined(CONFIG_SND_OMAP_SOC_MCPDM_MODULE)

static struct resource mcpdm_resources[] = {
	{
		.name		= "mcpdm_mem",
		.start		= OMAP44XX_MCPDM_BASE,
		.end		= OMAP44XX_MCPDM_BASE + SZ_4K,
		.flags		= IORESOURCE_MEM,
	},
	{
		.name		= "mcpdm_irq",
		.start		= OMAP44XX_IRQ_MCPDM,
		.end		= OMAP44XX_IRQ_MCPDM,
		.flags		= IORESOURCE_IRQ,
	},
};

static struct platform_device omap_mcpdm_device = {
	.name		= "omap-mcpdm",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(mcpdm_resources),
	.resource	= mcpdm_resources,
};

static void omap_init_mcpdm(void)
{
	(void) platform_device_register(&omap_mcpdm_device);
}
#else
static inline void omap_init_mcpdm(void) {}
#endif

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
	defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)

#define OMAP_MMC_NR_RES		2

/*
 * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
 */
int __init omap_mmc_add(const char *name, int id, unsigned long base,
				unsigned long size, unsigned int irq,
				struct omap_mmc_platform_data *data)
{
	struct platform_device *pdev;
	struct resource res[OMAP_MMC_NR_RES];
	int ret;

	pdev = platform_device_alloc(name, id);
	if (!pdev)
		return -ENOMEM;

	memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
	res[0].start = base;
	res[0].end = base + size - 1;
	res[0].flags = IORESOURCE_MEM;
	res[1].start = res[1].end = irq;
	res[1].flags = IORESOURCE_IRQ;

	ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
	if (ret == 0)
		ret = platform_device_add_data(pdev, data, sizeof(*data));
	if (ret)
		goto fail;

	ret = platform_device_add(pdev);
	if (ret)
		goto fail;

	/* return device handle to board setup code */
	data->dev = &pdev->dev;
	return 0;

fail:
	platform_device_put(pdev);
	return ret;
}

#endif

/*-------------------------------------------------------------------------*/

#if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)

#ifdef CONFIG_ARCH_OMAP2
#define	OMAP_RNG_BASE		0x480A0000
#else
#define	OMAP_RNG_BASE		0xfffe5000
#endif

static struct resource rng_resources[] = {
	{
		.start		= OMAP_RNG_BASE,
		.end		= OMAP_RNG_BASE + 0x4f,
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device omap_rng_device = {
	.name		= "omap_rng",
	.id		= -1,
	.num_resources	= ARRAY_SIZE(rng_resources),
	.resource	= rng_resources,
};

static void omap_init_rng(void)
{
	(void) platform_device_register(&omap_rng_device);
}
#else
static inline void omap_init_rng(void) {}
#endif

/*-------------------------------------------------------------------------*/

/* Numbering for the SPI-capable controllers when used for SPI:
 * spi		= 1
 * uwire	= 2
 * mmc1..2	= 3..4
 * mcbsp1..3	= 5..7
 */

#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)

#define	OMAP_UWIRE_BASE		0xfffb3000

static struct resource uwire_resources[] = {
	{
		.start		= OMAP_UWIRE_BASE,
		.end		= OMAP_UWIRE_BASE + 0x20,
		.flags		= IORESOURCE_MEM,
	},
};

static struct platform_device omap_uwire_device = {
	.name	   = "omap_uwire",
	.id	     = -1,
	.num_resources	= ARRAY_SIZE(uwire_resources),
	.resource	= uwire_resources,
};

static void omap_init_uwire(void)
{
	/* FIXME define and use a boot tag; not all boards will be hooking
	 * up devices to the microwire controller, and multi-board configs
	 * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
	 */

	/* board-specific code must configure chipselects (only a few
	 * are normally used) and SCLK/SDI/SDO (each has two choices).
	 */
	(void) platform_device_register(&omap_uwire_device);
}
#else
static inline void omap_init_uwire(void) {}
#endif

/*
 * This gets called after board-specific INIT_MACHINE, and initializes most
 * on-chip peripherals accessible on this board (except for few like USB):
 *
 *  (a) Does any "standard config" pin muxing needed.  Board-specific
 *	code will have muxed GPIO pins and done "nonstandard" setup;
 *	that code could live in the boot loader.
 *  (b) Populating board-specific platform_data with the data drivers
 *	rely on to handle wiring variations.
 *  (c) Creating platform devices as meaningful on this board and
 *	with this kernel configuration.
 *
 * Claiming GPIOs, and setting their direction and initial values, is the
 * responsibility of the device drivers.  So is responding to probe().
 *
 * Board-specific knowlege like creating devices or pin setup is to be
 * kept out of drivers as much as possible.  In particular, pin setup
 * may be handled by the boot loader, and drivers should expect it will
 * normally have been done by the time they're probed.
 */
static int __init omap_init_devices(void)
{
	/* please keep these calls, and their implementations above,
	 * in alphabetical order so they're easier to sort through.
	 */
	omap_init_rng();
	omap_init_mcpdm();
	omap_init_uwire();
	return 0;
}
arch_initcall(omap_init_devices);