omap: add dsp platform device

Otherwise tidspbridge cannot work.

It looks like this was dropped in the conversion to staging. I took the
liberty of doing some cleaning up.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Felipe Contreras 2010-10-04 19:09:14 +03:00 committed by Greg Kroah-Hartman
parent 07dea29a11
commit 90173882ed
5 changed files with 152 additions and 0 deletions

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@ -102,6 +102,10 @@ obj-y += $(iommu-m) $(iommu-y)
i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o
obj-y += $(i2c-omap-m) $(i2c-omap-y)
ifneq ($(CONFIG_TIDSPBRIDGE),)
obj-y += dsp.o
endif
# Specific board support
obj-$(CONFIG_MACH_OMAP_GENERIC) += board-generic.o
obj-$(CONFIG_MACH_OMAP_H4) += board-h4.o

85
arch/arm/mach-omap2/dsp.c Normal file
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@ -0,0 +1,85 @@
/*
* 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.
*/
#include <linux/platform_device.h>
#include "prm.h"
#include "cm.h"
#ifdef CONFIG_BRIDGE_DVFS
#include <plat/omap-pm.h>
#endif
#include <plat/dsp.h>
extern phys_addr_t omap_dsp_get_mempool_base(void);
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 = prm_read_mod_reg,
.dsp_prm_write = prm_write_mod_reg,
.dsp_prm_rmw_bits = prm_rmw_mod_reg_bits,
.dsp_cm_read = cm_read_mod_reg,
.dsp_cm_write = cm_write_mod_reg,
.dsp_cm_rmw_bits = cm_rmw_mod_reg_bits,
};
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: %x bytes @ %x\n", __func__,
pdata->phys_mempool_size, 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");

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@ -37,6 +37,7 @@
#include <plat/fpga.h>
#include <plat/serial.h>
#include <plat/vram.h>
#include <plat/dsp.h>
#include <plat/clock.h>
@ -87,6 +88,7 @@ void __init omap_reserve(void)
{
omapfb_reserve_sdram_memblock();
omap_vram_reserve_sdram_memblock();
omap_dsp_reserve_sdram_memblock();
}
/*

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@ -15,6 +15,7 @@
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/memblock.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@ -272,6 +273,35 @@ static void omap_init_wdt(void)
static inline void omap_init_wdt(void) {}
#endif
#if defined(CONFIG_TIDSPBRIDGE) || defined(CONFIG_TIDSPBRIDGE_MODULE)
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 = __memblock_alloc_base(size, SZ_1M, MEMBLOCK_REAL_LIMIT);
if (!paddr) {
pr_err("%s: failed to reserve %x bytes\n",
__func__, size);
return;
}
omap_dsp_phys_mempool_base = paddr;
}
phys_addr_t omap_dsp_get_mempool_base(void)
{
return omap_dsp_phys_mempool_base;
}
EXPORT_SYMBOL(omap_dsp_get_mempool_base);
#endif
/*
* This gets called after board-specific INIT_MACHINE, and initializes most
* on-chip peripherals accessible on this board (except for few like USB):

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@ -0,0 +1,31 @@
#ifndef __OMAP_DSP_H__
#define __OMAP_DSP_H__
#include <linux/types.h>
struct omap_dsp_platform_data {
void (*dsp_set_min_opp) (u8 opp_id);
u8 (*dsp_get_opp) (void);
void (*cpu_set_freq) (unsigned long f);
unsigned long (*cpu_get_freq) (void);
unsigned long mpu_speed[6];
/* functions to write and read PRCM registers */
void (*dsp_prm_write)(u32, s16 , u16);
u32 (*dsp_prm_read)(s16 , u16);
u32 (*dsp_prm_rmw_bits)(u32, u32, s16, s16);
void (*dsp_cm_write)(u32, s16 , u16);
u32 (*dsp_cm_read)(s16 , u16);
u32 (*dsp_cm_rmw_bits)(u32, u32, s16, s16);
phys_addr_t phys_mempool_base;
phys_addr_t phys_mempool_size;
};
#if defined(CONFIG_TIDSPBRIDGE) || defined(CONFIG_TIDSPBRIDGE_MODULE)
extern void omap_dsp_reserve_sdram_memblock(void);
#else
static inline void omap_dsp_reserve_sdram_memblock(void) { }
#endif
#endif