arch/arm/mach-omap2/dsp.c

   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 #include "cm2xxx_3xxx.h"
  24 #include "prm2xxx_3xxx.h"
  25 #ifdef CONFIG_BRIDGE_DVFS
  26 #include <plat/omap-pm.h>
  27 #endif
  28
  29 #include <plat/dsp.h>
  30
  31 extern phys_addr_t omap_dsp_get_mempool_base(void);
  32
  33 static struct platform_device *omap_dsp_pdev;
  34
  35 static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
  36 #ifdef CONFIG_BRIDGE_DVFS
  37         .dsp_set_min_opp = omap_pm_dsp_set_min_opp,
  38         .dsp_get_opp = omap_pm_dsp_get_opp,
  39         .cpu_set_freq = omap_pm_cpu_set_freq,
  40         .cpu_get_freq = omap_pm_cpu_get_freq,
  41 #endif
  42         .dsp_prm_read = omap2_prm_read_mod_reg,
  43         .dsp_prm_write = omap2_prm_write_mod_reg,
  44         .dsp_prm_rmw_bits = omap2_prm_rmw_mod_reg_bits,
  45         .dsp_cm_read = omap2_cm_read_mod_reg,
  46         .dsp_cm_write = omap2_cm_write_mod_reg,
  47         .dsp_cm_rmw_bits = omap2_cm_rmw_mod_reg_bits,
  48 };
  49
  50 static int __init omap_dsp_init(void)
  51 {
  52         struct platform_device *pdev;
  53         int err = -ENOMEM;
  54         struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;
  55
  56         pdata->phys_mempool_base = omap_dsp_get_mempool_base();
  57
  58         if (pdata->phys_mempool_base) {
  59                 pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
  60                 pr_info("%s: %x bytes @ %x\n", __func__,
  61                         pdata->phys_mempool_size, pdata->phys_mempool_base);
  62         }
  63
  64         pdev = platform_device_alloc("omap-dsp", -1);
  65         if (!pdev)
  66                 goto err_out;
  67
  68         err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
  69         if (err)
  70                 goto err_out;
  71
  72         err = platform_device_add(pdev);
  73         if (err)
  74                 goto err_out;
  75
  76         omap_dsp_pdev = pdev;
  77         return 0;
  78
  79 err_out:
  80         platform_device_put(pdev);
  81         return err;
  82 }
  83 module_init(omap_dsp_init);
  84
  85 static void __exit omap_dsp_exit(void)
  86 {
  87         platform_device_unregister(omap_dsp_pdev);
  88 }
  89 module_exit(omap_dsp_exit);
  90
  91 MODULE_AUTHOR("Hiroshi DOYU");
  92 MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
  93 MODULE_LICENSE("GPL");