[deliverable/linux.git] / arch / arm / mach-omap2 / dsp.c

/*
 * TI's OMAP DSP platform device registration
 *
 * Copyright (C) 2005-2006 Texas Instruments, Inc.
 * Copyright (C) 2009 Nokia Corporation
 *
 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

/*
 * XXX The function pointers to the PRM/CM functions are incorrect and
 * should be removed.  No device driver should be changing PRM/CM bits
 * directly; that's a layering violation -- those bits are the responsibility
 * of the OMAP PM core code.
 */

#include <linux/module.h>
#include <linux/platform_device.h>

#include <asm/memblock.h>

#include "cm2xxx_3xxx.h"
#include "prm2xxx_3xxx.h"
#ifdef CONFIG_BRIDGE_DVFS
#include <plat/omap-pm.h>
#endif

#include <plat/dsp.h>

static struct platform_device *omap_dsp_pdev;

static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
#ifdef CONFIG_BRIDGE_DVFS
	.dsp_set_min_opp = omap_pm_dsp_set_min_opp,
	.dsp_get_opp = omap_pm_dsp_get_opp,
	.cpu_set_freq = omap_pm_cpu_set_freq,
	.cpu_get_freq = omap_pm_cpu_get_freq,
#endif
	.dsp_prm_read = omap2_prm_read_mod_reg,
	.dsp_prm_write = omap2_prm_write_mod_reg,
	.dsp_prm_rmw_bits = omap2_prm_rmw_mod_reg_bits,
	.dsp_cm_read = omap2_cm_read_mod_reg,
	.dsp_cm_write = omap2_cm_write_mod_reg,
	.dsp_cm_rmw_bits = omap2_cm_rmw_mod_reg_bits,
};

static phys_addr_t omap_dsp_phys_mempool_base;

void __init omap_dsp_reserve_sdram_memblock(void)
{
	phys_addr_t size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
	phys_addr_t paddr;

	if (!size)
		return;

	paddr = arm_memblock_steal(size, SZ_1M);
	if (!paddr) {
		pr_err("%s: failed to reserve %llx bytes\n",
				__func__, (unsigned long long)size);
		return;
	}

	omap_dsp_phys_mempool_base = paddr;
}

static phys_addr_t omap_dsp_get_mempool_base(void)
{
	return omap_dsp_phys_mempool_base;
}

static int __init omap_dsp_init(void)
{
	struct platform_device *pdev;
	int err = -ENOMEM;
	struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;

	pdata->phys_mempool_base = omap_dsp_get_mempool_base();

	if (pdata->phys_mempool_base) {
		pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
		pr_info("%s: %llx bytes @ %llx\n", __func__,
			(unsigned long long)pdata->phys_mempool_size,
			(unsigned long long)pdata->phys_mempool_base);
	}

	pdev = platform_device_alloc("omap-dsp", -1);
	if (!pdev)
		goto err_out;

	err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
	if (err)
		goto err_out;

	err = platform_device_add(pdev);
	if (err)
		goto err_out;

	omap_dsp_pdev = pdev;
	return 0;

err_out:
	platform_device_put(pdev);
	return err;
}
module_init(omap_dsp_init);

static void __exit omap_dsp_exit(void)
{
	platform_device_unregister(omap_dsp_pdev);
}
module_exit(omap_dsp_exit);

MODULE_AUTHOR("Hiroshi DOYU");
MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
MODULE_LICENSE("GPL");
Commit	Line	Data
90173882 FC	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
59fb659b PW	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
a1bcc1dc	21	#include <linux/module.h>
90173882	22	#include <linux/platform_device.h>
febe9e02 TL	23
	24	#include <asm/memblock.h>
	25
59fb659b PW	26	#include "cm2xxx_3xxx.h"
59fb659b PW	27	#include "prm2xxx_3xxx.h"
90173882 FC	28	#ifdef CONFIG_BRIDGE_DVFS
	29	#include <plat/omap-pm.h>
	30	#endif
	31
	32	#include <plat/dsp.h>
	33
90173882 FC	34	static struct platform_device *omap_dsp_pdev;
	35
	36	static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
	37	#ifdef CONFIG_BRIDGE_DVFS
	38	.dsp_set_min_opp = omap_pm_dsp_set_min_opp,
	39	.dsp_get_opp = omap_pm_dsp_get_opp,
	40	.cpu_set_freq = omap_pm_cpu_set_freq,
	41	.cpu_get_freq = omap_pm_cpu_get_freq,
	42	#endif
c4d7e58f PW	43	.dsp_prm_read = omap2_prm_read_mod_reg,
	44	.dsp_prm_write = omap2_prm_write_mod_reg,
	45	.dsp_prm_rmw_bits = omap2_prm_rmw_mod_reg_bits,
	46	.dsp_cm_read = omap2_cm_read_mod_reg,
	47	.dsp_cm_write = omap2_cm_write_mod_reg,
	48	.dsp_cm_rmw_bits = omap2_cm_rmw_mod_reg_bits,
90173882 FC	49	};
90173882 FC	50
7f28427b TL	51	static phys_addr_t omap_dsp_phys_mempool_base;
	52
	53	void __init omap_dsp_reserve_sdram_memblock(void)
	54	{
	55	phys_addr_t size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
	56	phys_addr_t paddr;
	57
	58	if (!size)
	59	return;
	60
	61	paddr = arm_memblock_steal(size, SZ_1M);
	62	if (!paddr) {
	63	pr_err("%s: failed to reserve %llx bytes\n",
	64	__func__, (unsigned long long)size);
	65	return;
	66	}
	67
	68	omap_dsp_phys_mempool_base = paddr;
	69	}
	70
	71	static phys_addr_t omap_dsp_get_mempool_base(void)
	72	{
	73	return omap_dsp_phys_mempool_base;
	74	}
	75
90173882 FC	76	static int __init omap_dsp_init(void)
	77	{
	78	struct platform_device *pdev;
	79	int err = -ENOMEM;
	80	struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;
	81
	82	pdata->phys_mempool_base = omap_dsp_get_mempool_base();
	83
	84	if (pdata->phys_mempool_base) {
	85	pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
28ee793e FC	86	pr_info("%s: %llx bytes @ %llx\n", __func__,
	87	(unsigned long long)pdata->phys_mempool_size,
	88	(unsigned long long)pdata->phys_mempool_base);
90173882 FC	89	}
	90
	91	pdev = platform_device_alloc("omap-dsp", -1);
	92	if (!pdev)
	93	goto err_out;
	94
	95	err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
	96	if (err)
	97	goto err_out;
	98
	99	err = platform_device_add(pdev);
	100	if (err)
	101	goto err_out;
	102
	103	omap_dsp_pdev = pdev;
	104	return 0;
	105
	106	err_out:
	107	platform_device_put(pdev);
	108	return err;
	109	}
	110	module_init(omap_dsp_init);
	111
	112	static void __exit omap_dsp_exit(void)
	113	{
	114	platform_device_unregister(omap_dsp_pdev);
	115	}
	116	module_exit(omap_dsp_exit);
	117
	118	MODULE_AUTHOR("Hiroshi DOYU");
	119	MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
	120	MODULE_LICENSE("GPL");