2 * linux/arch/arm/plat-omap/devices.c
4 * Common platform device setup/initialization for OMAP1 and OMAP2
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 #include <linux/gpio.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
17 #include <linux/slab.h>
18 #include <linux/memblock.h>
20 #include <mach/hardware.h>
21 #include <asm/mach-types.h>
22 #include <asm/mach/map.h>
25 #include <plat/board.h>
27 #include <plat/menelaus.h>
28 #include <plat/omap44xx.h>
30 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
31 defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
33 #define OMAP_MMC_NR_RES 2
36 * Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
38 int __init omap_mmc_add(const char *name, int id, unsigned long base,
39 unsigned long size, unsigned int irq,
40 struct omap_mmc_platform_data *data)
42 struct platform_device *pdev;
43 struct resource res[OMAP_MMC_NR_RES];
46 pdev = platform_device_alloc(name, id);
50 memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
52 res[0].end = base + size - 1;
53 res[0].flags = IORESOURCE_MEM;
54 res[1].start = res[1].end = irq;
55 res[1].flags = IORESOURCE_IRQ;
57 ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
59 ret = platform_device_add_data(pdev, data, sizeof(*data));
63 ret = platform_device_add(pdev);
67 /* return device handle to board setup code */
68 data->dev = &pdev->dev;
72 platform_device_put(pdev);
78 /*-------------------------------------------------------------------------*/
80 #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
82 #ifdef CONFIG_ARCH_OMAP2
83 #define OMAP_RNG_BASE 0x480A0000
85 #define OMAP_RNG_BASE 0xfffe5000
88 static struct resource rng_resources[] = {
90 .start = OMAP_RNG_BASE,
91 .end = OMAP_RNG_BASE + 0x4f,
92 .flags = IORESOURCE_MEM,
96 static struct platform_device omap_rng_device = {
99 .num_resources = ARRAY_SIZE(rng_resources),
100 .resource = rng_resources,
103 static void omap_init_rng(void)
105 (void) platform_device_register(&omap_rng_device);
108 static inline void omap_init_rng(void) {}
111 /*-------------------------------------------------------------------------*/
113 /* Numbering for the SPI-capable controllers when used for SPI:
120 #if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
122 #define OMAP_UWIRE_BASE 0xfffb3000
124 static struct resource uwire_resources[] = {
126 .start = OMAP_UWIRE_BASE,
127 .end = OMAP_UWIRE_BASE + 0x20,
128 .flags = IORESOURCE_MEM,
132 static struct platform_device omap_uwire_device = {
133 .name = "omap_uwire",
135 .num_resources = ARRAY_SIZE(uwire_resources),
136 .resource = uwire_resources,
139 static void omap_init_uwire(void)
141 /* FIXME define and use a boot tag; not all boards will be hooking
142 * up devices to the microwire controller, and multi-board configs
143 * mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
146 /* board-specific code must configure chipselects (only a few
147 * are normally used) and SCLK/SDI/SDO (each has two choices).
149 (void) platform_device_register(&omap_uwire_device);
152 static inline void omap_init_uwire(void) {}
155 #if defined(CONFIG_TIDSPBRIDGE) || defined(CONFIG_TIDSPBRIDGE_MODULE)
157 static phys_addr_t omap_dsp_phys_mempool_base;
159 void __init omap_dsp_reserve_sdram_memblock(void)
161 phys_addr_t size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
167 paddr = memblock_alloc(size, SZ_1M);
169 pr_err("%s: failed to reserve %x bytes\n",
173 memblock_free(paddr, size);
174 memblock_remove(paddr, size);
176 omap_dsp_phys_mempool_base = paddr;
179 phys_addr_t omap_dsp_get_mempool_base(void)
181 return omap_dsp_phys_mempool_base;
183 EXPORT_SYMBOL(omap_dsp_get_mempool_base);
187 * This gets called after board-specific INIT_MACHINE, and initializes most
188 * on-chip peripherals accessible on this board (except for few like USB):
190 * (a) Does any "standard config" pin muxing needed. Board-specific
191 * code will have muxed GPIO pins and done "nonstandard" setup;
192 * that code could live in the boot loader.
193 * (b) Populating board-specific platform_data with the data drivers
194 * rely on to handle wiring variations.
195 * (c) Creating platform devices as meaningful on this board and
196 * with this kernel configuration.
198 * Claiming GPIOs, and setting their direction and initial values, is the
199 * responsibility of the device drivers. So is responding to probe().
201 * Board-specific knowledge like creating devices or pin setup is to be
202 * kept out of drivers as much as possible. In particular, pin setup
203 * may be handled by the boot loader, and drivers should expect it will
204 * normally have been done by the time they're probed.
206 static int __init omap_init_devices(void)
208 /* please keep these calls, and their implementations above,
209 * in alphabetical order so they're easier to sort through.
215 arch_initcall(omap_init_devices);