LXR linux/arch/arm/mach-imx/imx27-dt.c

   1/*
   2 * Copyright 2012 Sascha Hauer, Pengutronix
   3 *
   4 * The code contained herein is licensed under the GNU General Public
   5 * License. You may obtain a copy of the GNU General Public License
   6 * Version 2 or later at the following locations:
   7 *
   8 * http://www.opensource.org/licenses/gpl-license.html
   9 * http://www.gnu.org/copyleft/gpl.html
  10 */
  11
  12#include <linux/irq.h>
  13#include <linux/irqdomain.h>
  14#include <linux/of_irq.h>
  15#include <linux/of_platform.h>
  16#include <asm/mach/arch.h>
  17#include <asm/mach/time.h>
  18#include <mach/common.h>
  19#include <mach/mx27.h>
  20
  21static const struct of_dev_auxdata imx27_auxdata_lookup[] __initconst = {
  22        OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART1_BASE_ADDR, "imx21-uart.0", NULL),
  23        OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART2_BASE_ADDR, "imx21-uart.1", NULL),
  24        OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART3_BASE_ADDR, "imx21-uart.2", NULL),
  25        OF_DEV_AUXDATA("fsl,imx27-fec", MX27_FEC_BASE_ADDR, "imx27-fec.0", NULL),
  26        OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
  27        OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
  28        OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI1_BASE_ADDR, "imx27-cspi.0", NULL),
  29        OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI2_BASE_ADDR, "imx27-cspi.1", NULL),
  30        OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI3_BASE_ADDR, "imx27-cspi.2", NULL),
  31        OF_DEV_AUXDATA("fsl,imx27-wdt", MX27_WDOG_BASE_ADDR, "imx2-wdt.0", NULL),
  32        { /* sentinel */ }
  33};
  34
  35static int __init imx27_avic_add_irq_domain(struct device_node *np,
  36                                struct device_node *interrupt_parent)
  37{
  38        irq_domain_add_legacy(np, 64, 0, 0, &irq_domain_simple_ops, NULL);
  39        return 0;
  40}
  41
  42static int __init imx27_gpio_add_irq_domain(struct device_node *np,
  43                                struct device_node *interrupt_parent)
  44{
  45        static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
  46
  47        gpio_irq_base -= 32;
  48        irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops,
  49                                NULL);
  50
  51        return 0;
  52}
  53
  54static const struct of_device_id imx27_irq_match[] __initconst = {
  55        { .compatible = "fsl,imx27-avic", .data = imx27_avic_add_irq_domain, },
  56        { .compatible = "fsl,imx27-gpio", .data = imx27_gpio_add_irq_domain, },
  57        { /* sentinel */ }
  58};
  59
  60static void __init imx27_dt_init(void)
  61{
  62        of_irq_init(imx27_irq_match);
  63
  64        of_platform_populate(NULL, of_default_bus_match_table,
  65                             imx27_auxdata_lookup, NULL);
  66}
  67
  68static void __init imx27_timer_init(void)
  69{
  70        mx27_clocks_init_dt();
  71}
  72
  73static struct sys_timer imx27_timer = {
  74        .init = imx27_timer_init,
  75};
  76
  77static const char *imx27_dt_board_compat[] __initdata = {
  78        "fsl,imx27",
  79        NULL
  80};
  81
  82DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
  83        .map_io         = mx27_map_io,
  84        .init_early     = imx27_init_early,
  85        .init_irq       = mx27_init_irq,
  86        .handle_irq     = imx27_handle_irq,
  87        .timer          = &imx27_timer,
  88        .init_machine   = imx27_dt_init,
  89        .dt_compat      = imx27_dt_board_compat,
  90        .restart        = mxc_restart,
  91MACHINE_END
  92