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 #include <linux/platform_device.h>
  15 #include "prm.h"
  16 #include "cm.h"
  17 #ifdef CONFIG_BRIDGE_DVFS
  18 #include <plat/omap-pm.h>
  19 #endif
  20
  21 #include <plat/dsp.h>
  22
  23 extern phys_addr_t omap_dsp_get_mempool_base(void);
  24
  25 static struct platform_device *omap_dsp_pdev;
  26
  27 static struct omap_dsp_platform_data omap_dsp_pdata __initdata = {
  28 #ifdef CONFIG_BRIDGE_DVFS
  29         .dsp_set_min_opp = omap_pm_dsp_set_min_opp,
  30         .dsp_get_opp = omap_pm_dsp_get_opp,
  31         .cpu_set_freq = omap_pm_cpu_set_freq,
  32         .cpu_get_freq = omap_pm_cpu_get_freq,
  33 #endif
  34         .dsp_prm_read = prm_read_mod_reg,
  35         .dsp_prm_write = prm_write_mod_reg,
  36         .dsp_prm_rmw_bits = prm_rmw_mod_reg_bits,
  37         .dsp_cm_read = cm_read_mod_reg,
  38         .dsp_cm_write = cm_write_mod_reg,
  39         .dsp_cm_rmw_bits = cm_rmw_mod_reg_bits,
  40 };
  41
  42 static int __init omap_dsp_init(void)
  43 {
  44         struct platform_device *pdev;
  45         int err = -ENOMEM;
  46         struct omap_dsp_platform_data *pdata = &omap_dsp_pdata;
  47
  48         pdata->phys_mempool_base = omap_dsp_get_mempool_base();
  49
  50         if (pdata->phys_mempool_base) {
  51                 pdata->phys_mempool_size = CONFIG_TIDSPBRIDGE_MEMPOOL_SIZE;
  52                 pr_info("%s: %x bytes @ %x\n", __func__,
  53                         pdata->phys_mempool_size, pdata->phys_mempool_base);
  54         }
  55
  56         pdev = platform_device_alloc("omap-dsp", -1);
  57         if (!pdev)
  58                 goto err_out;
  59
  60         err = platform_device_add_data(pdev, pdata, sizeof(*pdata));
  61         if (err)
  62                 goto err_out;
  63
  64         err = platform_device_add(pdev);
  65         if (err)
  66                 goto err_out;
  67
  68         omap_dsp_pdev = pdev;
  69         return 0;
  70
  71 err_out:
  72         platform_device_put(pdev);
  73         return err;
  74 }
  75 module_init(omap_dsp_init);
  76
  77 static void __exit omap_dsp_exit(void)
  78 {
  79         platform_device_unregister(omap_dsp_pdev);
  80 }
  81 module_exit(omap_dsp_exit);
  82
  83 MODULE_AUTHOR("Hiroshi DOYU");
  84 MODULE_DESCRIPTION("TI's OMAP DSP platform device registration");
  85 MODULE_LICENSE("GPL");