[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 "control.h"
#include "cm2xxx_3xxx.h"
#include "prm2xxx_3xxx.h"
#ifdef CONFIG_TIDSPBRIDGE_DVFS
#include "omap-pm.h"
#endif
#include "soc.h"

#include <linux/platform_data/dsp-omap.h>

static struct platform_device *omap_dsp_pdev;

static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
#ifdef CONFIG_TIDSPBRIDGE_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,

	.set_bootaddr = omap_ctrl_write_dsp_boot_addr,
	.set_bootmode = omap_ctrl_write_dsp_boot_mode,
};

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 (!cpu_is_omap34xx())
		return;

	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;

	if (!cpu_is_omap34xx())
		return 0;

	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)
{
	if (!cpu_is_omap34xx())
		return;

	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
3d3635c4	26	#include "control.h"
59fb659b PW	27	#include "cm2xxx_3xxx.h"
59fb659b PW	28	#include "prm2xxx_3xxx.h"
ce9df0b0	29	#ifdef CONFIG_TIDSPBRIDGE_DVFS
1d5aef49	30	#include "omap-pm.h"
90173882	31	#endif
526570cb	32	#include "soc.h"
90173882	33
2203747c	34	#include <linux/platform_data/dsp-omap.h>
90173882	35
90173882 FC	36	static struct platform_device *omap_dsp_pdev;
	37
	38	static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
ce9df0b0	39	#ifdef CONFIG_TIDSPBRIDGE_DVFS
90173882 FC	40	.dsp_set_min_opp = omap_pm_dsp_set_min_opp,
	41	.dsp_get_opp = omap_pm_dsp_get_opp,
	42	.cpu_set_freq = omap_pm_cpu_set_freq,
	43	.cpu_get_freq = omap_pm_cpu_get_freq,
	44	#endif
c4d7e58f PW	45	.dsp_prm_read = omap2_prm_read_mod_reg,
	46	.dsp_prm_write = omap2_prm_write_mod_reg,
	47	.dsp_prm_rmw_bits = omap2_prm_rmw_mod_reg_bits,
	48	.dsp_cm_read = omap2_cm_read_mod_reg,
	49	.dsp_cm_write = omap2_cm_write_mod_reg,
	50	.dsp_cm_rmw_bits = omap2_cm_rmw_mod_reg_bits,
3d3635c4 ORL	51
	52	.set_bootaddr = omap_ctrl_write_dsp_boot_addr,
	53	.set_bootmode = omap_ctrl_write_dsp_boot_mode,
90173882 FC	54	};
90173882 FC	55
7f28427b TL	56	static phys_addr_t omap_dsp_phys_mempool_base;
	57
	58	void __init omap_dsp_reserve_sdram_memblock(void)
	59	{
	60	phys_addr_t size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
	61	phys_addr_t paddr;
	62
526570cb SA	63	if (!cpu_is_omap34xx())
	64	return;
	65
7f28427b TL	66	if (!size)
	67	return;
	68
	69	paddr = arm_memblock_steal(size, SZ_1M);
	70	if (!paddr) {
	71	pr_err("%s: failed to reserve %llx bytes\n",
	72	__func__, (unsigned long long)size);
	73	return;
	74	}
	75
	76	omap_dsp_phys_mempool_base = paddr;
	77	}
	78
	79	static phys_addr_t omap_dsp_get_mempool_base(void)
	80	{
	81	return omap_dsp_phys_mempool_base;
	82	}
	83
90173882 FC	84	static int __init omap_dsp_init(void)
	85	{
	86	struct platform_device *pdev;
	87	int err = -ENOMEM;
	88	struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;
	89
526570cb SA	90	if (!cpu_is_omap34xx())
	91	return 0;
	92
90173882 FC	93	pdata->phys_mempool_base = omap_dsp_get_mempool_base();
	94
	95	if (pdata->phys_mempool_base) {
	96	pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
28ee793e FC	97	pr_info("%s: %llx bytes @ %llx\n", __func__,
	98	(unsigned long long)pdata->phys_mempool_size,
	99	(unsigned long long)pdata->phys_mempool_base);
90173882 FC	100	}
	101
	102	pdev = platform_device_alloc("omap-dsp", -1);
	103	if (!pdev)
	104	goto err_out;
	105
	106	err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
	107	if (err)
	108	goto err_out;
	109
	110	err = platform_device_add(pdev);
	111	if (err)
	112	goto err_out;
	113
	114	omap_dsp_pdev = pdev;
	115	return 0;
	116
	117	err_out:
	118	platform_device_put(pdev);
	119	return err;
	120	}
	121	module_init(omap_dsp_init);
	122
	123	static void __exit omap_dsp_exit(void)
	124	{
526570cb SA	125	if (!cpu_is_omap34xx())
	126	return;
	127
90173882 FC	128	platform_device_unregister(omap_dsp_pdev);
	129	}
	130	module_exit(omap_dsp_exit);
	131
	132	MODULE_AUTHOR("Hiroshi DOYU");
	133	MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
	134	MODULE_LICENSE("GPL");