1/*
  2 * TI's OMAP DSP platform device registration
  3 *
  4 * Copyright (C) 2005-2006 Texas Instruments, Inc.
  5 * Copyright (C) 2009 Nokia Corporation
  6 *
  7 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
  8 *
  9 * This program is free software; you can redistribute it and/or modify
 10 * it under the terms of the GNU General Public License version 2 as
 11 * published by the Free Software Foundation.
 12 */
 13
 14/*
 15 * XXX The function pointers to the PRM/CM functions are incorrect and
 16 * should be removed.  No device driver should be changing PRM/CM bits
 17 * directly; that's a layering violation -- those bits are the responsibility
 18 * of the OMAP PM core code.
 19 */
 20
 21#include <linux/module.h>
 22#include <linux/platform_device.h>
 23
 24#include <asm/memblock.h>
 25
 26#include "control.h"
 27#include "cm2xxx_3xxx.h"
 28#include "prm2xxx_3xxx.h"
 29#ifdef CONFIG_TIDSPBRIDGE_DVFS
 30#include "omap-pm.h"
 31#endif
 32
 33#include <linux/platform_data/dsp-omap.h>
 34
 35static struct platform_device *omap_dsp_pdev;
 36
 37static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
 38#ifdef CONFIG_TIDSPBRIDGE_DVFS
 39	.dsp_set_min_opp = omap_pm_dsp_set_min_opp,
 40	.dsp_get_opp = omap_pm_dsp_get_opp,
 41	.cpu_set_freq = omap_pm_cpu_set_freq,
 42	.cpu_get_freq = omap_pm_cpu_get_freq,
 43#endif
 44	.dsp_prm_read = omap2_prm_read_mod_reg,
 45	.dsp_prm_write = omap2_prm_write_mod_reg,
 46	.dsp_prm_rmw_bits = omap2_prm_rmw_mod_reg_bits,
 47	.dsp_cm_read = omap2_cm_read_mod_reg,
 48	.dsp_cm_write = omap2_cm_write_mod_reg,
 49	.dsp_cm_rmw_bits = omap2_cm_rmw_mod_reg_bits,
 50
 51	.set_bootaddr = omap_ctrl_write_dsp_boot_addr,
 52	.set_bootmode = omap_ctrl_write_dsp_boot_mode,
 53};
 54
 55static phys_addr_t omap_dsp_phys_mempool_base;
 56
 57void __init omap_dsp_reserve_sdram_memblock(void)
 58{
 59	phys_addr_t size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
 60	phys_addr_t paddr;
 61
 62	if (!size)
 63		return;
 64
 65	paddr = arm_memblock_steal(size, SZ_1M);
 66	if (!paddr) {
 67		pr_err("%s: failed to reserve %llx bytes\n",
 68				__func__, (unsigned long long)size);
 69		return;
 70	}
 71
 72	omap_dsp_phys_mempool_base = paddr;
 73}
 74
 75static phys_addr_t omap_dsp_get_mempool_base(void)
 76{
 77	return omap_dsp_phys_mempool_base;
 78}
 79
 80static int __init omap_dsp_init(void)
 81{
 82	struct platform_device *pdev;
 83	int err = -ENOMEM;
 84	struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;
 85
 86	pdata->phys_mempool_base = omap_dsp_get_mempool_base();
 87
 88	if (pdata->phys_mempool_base) {
 89		pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
 90		pr_info("%s: %llx bytes @ %llx\n", __func__,
 91			(unsigned long long)pdata->phys_mempool_size,
 92			(unsigned long long)pdata->phys_mempool_base);
 93	}
 94
 95	pdev = platform_device_alloc("omap-dsp", -1);
 96	if (!pdev)
 97		goto err_out;
 98
 99	err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
100	if (err)
101		goto err_out;
102
103	err = platform_device_add(pdev);
104	if (err)
105		goto err_out;
106
107	omap_dsp_pdev = pdev;
108	return 0;
109
110err_out:
111	platform_device_put(pdev);
112	return err;
113}
114module_init(omap_dsp_init);
115
116static void __exit omap_dsp_exit(void)
117{
118	platform_device_unregister(omap_dsp_pdev);
119}
120module_exit(omap_dsp_exit);
121
122MODULE_AUTHOR("Hiroshi DOYU");
123MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
124MODULE_LICENSE("GPL");