omap: add dsp platform device (90173882) · Commits · 戴 / test

arch/arm/mach-omap2/Makefile

+4 −0

Original line number	Diff line number	Diff line
		@@ -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

arch/arm/mach-omap2/dsp.c

0 → 100644

+85 −0

Original line number	Diff line number	Diff line
		/*
		* 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");

arch/arm/plat-omap/common.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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();
		}

		/*

arch/arm/plat-omap/devices.c

+30 −0

Original line number	Diff line number	Diff line
		@@ -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):

arch/arm/plat-omap/include/plat/dsp.h

0 → 100644

+31 −0

Original line number	Diff line number	Diff line
		#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

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