에프에이리눅스 / 1611_0007_prime_oven

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kernel/linux-imx6_3.14.28/arch/arm/mach-imx/mm-imx27.c 2.96 KB
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  /*
   * arch/arm/mach-imx/mm-imx27.c
   *
   * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   *
   * 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.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   * MA 02110-1301, USA.
   */
  
  #include <linux/mm.h>
  #include <linux/init.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-v1.h"
  
  /* MX27 memory map definition */
  static struct map_desc imx27_io_desc[] __initdata = {
  	/*
  	 * this fixed mapping covers:
  	 * - AIPI1
  	 * - AIPI2
  	 * - AITC
  	 * - ROM Patch
  	 * - and some reserved space
  	 */
  	imx_map_entry(MX27, AIPI, MT_DEVICE),
  	/*
  	 * this fixed mapping covers:
  	 * - CSI
  	 * - ATA
  	 */
  	imx_map_entry(MX27, SAHB1, MT_DEVICE),
  	/*
  	 * this fixed mapping covers:
  	 * - EMI
  	 */
  	imx_map_entry(MX27, X_MEMC, MT_DEVICE),
  };
  
  /*
   * Initialize the memory map. It is called during the
   * system startup to create static physical to virtual
   * memory map for the IO modules.
   */
  void __init mx27_map_io(void)
  {
  	iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
  }
  
  void __init imx27_init_early(void)
  {
  	mxc_set_cpu_type(MXC_CPU_MX27);
  	imx_iomuxv1_init(MX27_IO_ADDRESS(MX27_GPIO_BASE_ADDR),
  			MX27_NUM_GPIO_PORT);
  }
  
  void __init mx27_init_irq(void)
  {
  	mxc_init_irq(MX27_IO_ADDRESS(MX27_AVIC_BASE_ADDR));
  }
  
  static const struct resource imx27_audmux_res[] __initconst = {
  	DEFINE_RES_MEM(MX27_AUDMUX_BASE_ADDR, SZ_4K),
  };
  
  void __init imx27_soc_init(void)
  {
  	mxc_arch_reset_init(MX27_IO_ADDRESS(MX27_WDOG_BASE_ADDR));
  	mxc_device_init();
  
  	/* i.mx27 has the i.mx21 type gpio */
  	mxc_register_gpio("imx21-gpio", 0, MX27_GPIO1_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
  	mxc_register_gpio("imx21-gpio", 1, MX27_GPIO2_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
  	mxc_register_gpio("imx21-gpio", 2, MX27_GPIO3_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
  	mxc_register_gpio("imx21-gpio", 3, MX27_GPIO4_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
  	mxc_register_gpio("imx21-gpio", 4, MX27_GPIO5_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
  	mxc_register_gpio("imx21-gpio", 5, MX27_GPIO6_BASE_ADDR, SZ_256, MX27_INT_GPIO, 0);
  
  	pinctrl_provide_dummies();
  	imx_add_imx_dma("imx27-dma", MX27_DMA_BASE_ADDR,
  			MX27_INT_DMACH0, 0); /* No ERR irq */
  	/* imx27 has the imx21 type audmux */
  	platform_device_register_simple("imx21-audmux", 0, imx27_audmux_res,
  					ARRAY_SIZE(imx27_audmux_res));
  }