262 lines
6.7 KiB
C
262 lines
6.7 KiB
C
/*
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* linux/arch/arm/plat-omap/devices.c
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*
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* Common platform device setup/initialization for OMAP1 and OMAP2
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/gpio.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/memblock.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/mach/map.h>
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#include <plat/tc.h>
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#include <plat/board.h>
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#include <plat/mmc.h>
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#include <plat/menelaus.h>
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#include <plat/mcbsp.h>
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#include <plat/omap44xx.h>
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
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static struct platform_device **omap_mcbsp_devices;
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void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
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struct omap_mcbsp_platform_data *config, int size)
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{
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int i;
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omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
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GFP_KERNEL);
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if (!omap_mcbsp_devices) {
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printk(KERN_ERR "Could not register McBSP devices\n");
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return;
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}
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for (i = 0; i < size; i++) {
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struct platform_device *new_mcbsp;
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int ret;
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new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
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if (!new_mcbsp)
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continue;
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platform_device_add_resources(new_mcbsp, &res[i * res_count],
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res_count);
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new_mcbsp->dev.platform_data = &config[i];
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ret = platform_device_add(new_mcbsp);
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if (ret) {
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platform_device_put(new_mcbsp);
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continue;
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}
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omap_mcbsp_devices[i] = new_mcbsp;
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}
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}
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#else
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void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
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struct omap_mcbsp_platform_data *config, int size)
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{ }
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#endif
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \
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defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE)
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#define OMAP_MMC_NR_RES 2
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/*
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* Register MMC devices. Called from mach-omap1 and mach-omap2 device init.
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*/
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int __init omap_mmc_add(const char *name, int id, unsigned long base,
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unsigned long size, unsigned int irq,
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struct omap_mmc_platform_data *data)
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{
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struct platform_device *pdev;
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struct resource res[OMAP_MMC_NR_RES];
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int ret;
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pdev = platform_device_alloc(name, id);
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if (!pdev)
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return -ENOMEM;
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memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource));
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res[0].start = base;
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res[0].end = base + size - 1;
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res[0].flags = IORESOURCE_MEM;
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res[1].start = res[1].end = irq;
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res[1].flags = IORESOURCE_IRQ;
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ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res));
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if (ret == 0)
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ret = platform_device_add_data(pdev, data, sizeof(*data));
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if (ret)
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goto fail;
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ret = platform_device_add(pdev);
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if (ret)
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goto fail;
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/* return device handle to board setup code */
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data->dev = &pdev->dev;
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return 0;
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fail:
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platform_device_put(pdev);
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return ret;
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}
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#endif
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE)
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#ifdef CONFIG_ARCH_OMAP2
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#define OMAP_RNG_BASE 0x480A0000
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#else
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#define OMAP_RNG_BASE 0xfffe5000
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#endif
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static struct resource rng_resources[] = {
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{
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.start = OMAP_RNG_BASE,
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.end = OMAP_RNG_BASE + 0x4f,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device omap_rng_device = {
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.name = "omap_rng",
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.id = -1,
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.num_resources = ARRAY_SIZE(rng_resources),
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.resource = rng_resources,
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};
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static void omap_init_rng(void)
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{
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(void) platform_device_register(&omap_rng_device);
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}
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#else
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static inline void omap_init_rng(void) {}
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#endif
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/*-------------------------------------------------------------------------*/
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/* Numbering for the SPI-capable controllers when used for SPI:
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* spi = 1
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* uwire = 2
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* mmc1..2 = 3..4
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* mcbsp1..3 = 5..7
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*/
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#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE)
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#define OMAP_UWIRE_BASE 0xfffb3000
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static struct resource uwire_resources[] = {
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{
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.start = OMAP_UWIRE_BASE,
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.end = OMAP_UWIRE_BASE + 0x20,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device omap_uwire_device = {
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.name = "omap_uwire",
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.id = -1,
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.num_resources = ARRAY_SIZE(uwire_resources),
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.resource = uwire_resources,
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};
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static void omap_init_uwire(void)
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{
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/* FIXME define and use a boot tag; not all boards will be hooking
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* up devices to the microwire controller, and multi-board configs
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* mean that CONFIG_SPI_OMAP_UWIRE may be configured anyway...
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*/
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/* board-specific code must configure chipselects (only a few
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* are normally used) and SCLK/SDI/SDO (each has two choices).
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*/
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(void) platform_device_register(&omap_uwire_device);
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}
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#else
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static inline void omap_init_uwire(void) {}
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#endif
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#if defined(CONFIG_TIDSPBRIDGE) || defined(CONFIG_TIDSPBRIDGE_MODULE)
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static phys_addr_t omap_dsp_phys_mempool_base;
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void __init omap_dsp_reserve_sdram_memblock(void)
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{
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phys_addr_t size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
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phys_addr_t paddr;
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if (!size)
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return;
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paddr = memblock_alloc(size, SZ_1M);
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if (!paddr) {
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pr_err("%s: failed to reserve %x bytes\n",
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__func__, size);
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return;
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}
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memblock_free(paddr, size);
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memblock_remove(paddr, size);
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omap_dsp_phys_mempool_base = paddr;
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}
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phys_addr_t omap_dsp_get_mempool_base(void)
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{
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return omap_dsp_phys_mempool_base;
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}
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EXPORT_SYMBOL(omap_dsp_get_mempool_base);
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#endif
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/*
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* This gets called after board-specific INIT_MACHINE, and initializes most
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* on-chip peripherals accessible on this board (except for few like USB):
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*
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* (a) Does any "standard config" pin muxing needed. Board-specific
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* code will have muxed GPIO pins and done "nonstandard" setup;
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* that code could live in the boot loader.
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* (b) Populating board-specific platform_data with the data drivers
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* rely on to handle wiring variations.
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* (c) Creating platform devices as meaningful on this board and
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* with this kernel configuration.
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*
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* Claiming GPIOs, and setting their direction and initial values, is the
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* responsibility of the device drivers. So is responding to probe().
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*
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* Board-specific knowledge like creating devices or pin setup is to be
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* kept out of drivers as much as possible. In particular, pin setup
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* may be handled by the boot loader, and drivers should expect it will
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* normally have been done by the time they're probed.
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*/
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static int __init omap_init_devices(void)
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{
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/* please keep these calls, and their implementations above,
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* in alphabetical order so they're easier to sort through.
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*/
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omap_init_rng();
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omap_init_uwire();
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return 0;
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}
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arch_initcall(omap_init_devices);
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