arch/arm/mach-imx/mm-imx21.c

   1 /*
   2  * arch/arm/mach-imx/mm-imx21.c
   3  *
   4  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  18  * MA 02110-1301, USA.
  19  */
  20
  21 #include <linux/mm.h>
  22 #include <linux/init.h>
  23 #include <linux/pinctrl/machine.h>
  24 #include <asm/pgtable.h>
  25 #include <asm/mach/map.h>
  26
  27 #include "common.h"
  28 #include "devices/devices-common.h"
  29 #include "hardware.h"
  30 #include "iomux-v1.h"
  31
  32 /* MX21 memory map definition */
  33 static struct map_desc imx21_io_desc[] __initdata = {
  34         /*
  35          * this fixed mapping covers:
  36          * - AIPI1
  37          * - AIPI2
  38          * - AITC
  39          * - ROM Patch
  40          * - and some reserved space
  41          */
  42         imx_map_entry(MX21, AIPI, MT_DEVICE),
  43         /*
  44          * this fixed mapping covers:
  45          * - CSI
  46          * - ATA
  47          */
  48         imx_map_entry(MX21, SAHB1, MT_DEVICE),
  49         /*
  50          * this fixed mapping covers:
  51          * - EMI
  52          */
  53         imx_map_entry(MX21, X_MEMC, MT_DEVICE),
  54 };
  55
  56 /*
  57  * Initialize the memory map. It is called during the
  58  * system startup to create static physical to virtual
  59  * memory map for the IO modules.
  60  */
  61 void __init mx21_map_io(void)
  62 {
  63         iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc));
  64 }
  65
  66 void __init imx21_init_early(void)
  67 {
  68         mxc_set_cpu_type(MXC_CPU_MX21);
  69         imx_iomuxv1_init(MX21_IO_ADDRESS(MX21_GPIO_BASE_ADDR),
  70                         MX21_NUM_GPIO_PORT);
  71 }
  72
  73 void __init mx21_init_irq(void)
  74 {
  75         mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
  76 }
  77
  78 static const struct resource imx21_audmux_res[] __initconst = {
  79         DEFINE_RES_MEM(MX21_AUDMUX_BASE_ADDR, SZ_4K),
  80 };
  81
  82 void __init imx21_soc_init(void)
  83 {
  84         mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR));
  85         mxc_device_init();
  86
  87         mxc_register_gpio("imx21-gpio", 0, MX21_GPIO1_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  88         mxc_register_gpio("imx21-gpio", 1, MX21_GPIO2_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  89         mxc_register_gpio("imx21-gpio", 2, MX21_GPIO3_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  90         mxc_register_gpio("imx21-gpio", 3, MX21_GPIO4_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  91         mxc_register_gpio("imx21-gpio", 4, MX21_GPIO5_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  92         mxc_register_gpio("imx21-gpio", 5, MX21_GPIO6_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
  93
  94         pinctrl_provide_dummies();
  95         imx_add_imx_dma("imx21-dma", MX21_DMA_BASE_ADDR,
  96                         MX21_INT_DMACH0, 0); /* No ERR irq */
  97         platform_device_register_simple("imx21-audmux", 0, imx21_audmux_res,
  98                                         ARRAY_SIZE(imx21_audmux_res));
  99 }