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kernel/linux-imx6_3.14.28/arch/arm/mach-imx/mm-imx25.c 2.82 KB
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  /*
   *  Copyright (C) 1999,2000 Arm Limited
   *  Copyright (C) 2000 Deep Blue Solutions Ltd
   *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   *    - add MX31 specific definitions
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  #include <linux/mm.h>
  #include <linux/init.h>
  #include <linux/err.h>
  #include <linux/pinctrl/machine.h>
  
  #include <asm/pgtable.h>
  #include <asm/mach/map.h>
  
  #include "common.h"
  #include "devices/devices-common.h"
  #include "hardware.h"
  #include "iomux-v3.h"
  #include "mx25.h"
  
  /*
   * This table defines static virtual address mappings for I/O regions.
   * These are the mappings common across all MX25 boards.
   */
  static struct map_desc mx25_io_desc[] __initdata = {
  	imx_map_entry(MX25, AVIC, MT_DEVICE_NONSHARED),
  	imx_map_entry(MX25, AIPS1, MT_DEVICE_NONSHARED),
  	imx_map_entry(MX25, AIPS2, MT_DEVICE_NONSHARED),
  };
  
  /*
   * This function initializes the memory map. It is called during the
   * system startup to create static physical to virtual memory mappings
   * for the IO modules.
   */
  void __init mx25_map_io(void)
  {
  	iotable_init(mx25_io_desc, ARRAY_SIZE(mx25_io_desc));
  }
  
  void __init imx25_init_early(void)
  {
  	mxc_set_cpu_type(MXC_CPU_MX25);
  	mxc_iomux_v3_init(MX25_IO_ADDRESS(MX25_IOMUXC_BASE_ADDR));
  }
  
  void __init mx25_init_irq(void)
  {
  	mxc_init_irq(MX25_IO_ADDRESS(MX25_AVIC_BASE_ADDR));
  }
  
  static struct sdma_platform_data imx25_sdma_pdata __initdata = {
  	.fw_name = "sdma-imx25.bin",
  };
  
  static const struct resource imx25_audmux_res[] __initconst = {
  	DEFINE_RES_MEM(MX25_AUDMUX_BASE_ADDR, SZ_16K),
  };
  
  void __init imx25_soc_init(void)
  {
  	mxc_arch_reset_init(MX25_IO_ADDRESS(MX25_WDOG_BASE_ADDR));
  	mxc_device_init();
  
  	/* i.mx25 has the i.mx35 type gpio */
  	mxc_register_gpio("imx35-gpio", 0, MX25_GPIO1_BASE_ADDR, SZ_16K, MX25_INT_GPIO1, 0);
  	mxc_register_gpio("imx35-gpio", 1, MX25_GPIO2_BASE_ADDR, SZ_16K, MX25_INT_GPIO2, 0);
  	mxc_register_gpio("imx35-gpio", 2, MX25_GPIO3_BASE_ADDR, SZ_16K, MX25_INT_GPIO3, 0);
  	mxc_register_gpio("imx35-gpio", 3, MX25_GPIO4_BASE_ADDR, SZ_16K, MX25_INT_GPIO4, 0);
  
  	pinctrl_provide_dummies();
  	/* i.mx25 has the i.mx35 type sdma */
  	imx_add_imx_sdma("imx35-sdma", MX25_SDMA_BASE_ADDR, MX25_INT_SDMA, &imx25_sdma_pdata);
  	/* i.mx25 has the i.mx31 type audmux */
  	platform_device_register_simple("imx31-audmux", 0, imx25_audmux_res,
  					ARRAY_SIZE(imx25_audmux_res));
  }