LXR linux/arch/mips/alchemy/board-xxs1500.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * BRIEF MODULE DESCRIPTION
   4 *      MyCable XXS1500 board support
   5 *
   6 * Copyright 2003, 2008 MontaVista Software Inc.
   7 * Author: MontaVista Software, Inc. <source@mvista.com>
   8 */
   9
  10#include <linux/kernel.h>
  11#include <linux/init.h>
  12#include <linux/interrupt.h>
  13#include <linux/platform_device.h>
  14#include <linux/gpio.h>
  15#include <linux/delay.h>
  16#include <linux/pm.h>
  17#include <asm/bootinfo.h>
  18#include <asm/reboot.h>
  19#include <asm/setup.h>
  20#include <asm/mach-au1x00/au1000.h>
  21#include <asm/mach-au1x00/gpio-au1000.h>
  22#include <prom.h>
  23
  24const char *get_system_type(void)
  25{
  26        return "XXS1500";
  27}
  28
  29void prom_putchar(char c)
  30{
  31        alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
  32}
  33
  34static void xxs1500_reset(char *c)
  35{
  36        /* Jump to the reset vector */
  37        __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
  38}
  39
  40static void xxs1500_power_off(void)
  41{
  42        while (1)
  43                asm volatile (
  44                "       .set    mips32                                  \n"
  45                "       wait                                            \n"
  46                "       .set    mips0                                   \n");
  47}
  48
  49void __init board_setup(void)
  50{
  51        u32 pin_func;
  52
  53        pm_power_off = xxs1500_power_off;
  54        _machine_halt = xxs1500_power_off;
  55        _machine_restart = xxs1500_reset;
  56
  57        alchemy_gpio1_input_enable();
  58        alchemy_gpio2_enable();
  59
  60        /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
  61        pin_func  = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
  62        pin_func |= SYS_PF_UR3;
  63        alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
  64
  65        /* Enable UART */
  66        alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
  67        /* Enable DTR (MCR bit 0) = USB power up */
  68        __raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
  69        wmb();
  70}
  71
  72/******************************************************************************/
  73
  74static struct resource xxs1500_pcmcia_res[] = {
  75        {
  76                .name   = "pcmcia-io",
  77                .flags  = IORESOURCE_MEM,
  78                .start  = AU1000_PCMCIA_IO_PHYS_ADDR,
  79                .end    = AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1,
  80        },
  81        {
  82                .name   = "pcmcia-attr",
  83                .flags  = IORESOURCE_MEM,
  84                .start  = AU1000_PCMCIA_ATTR_PHYS_ADDR,
  85                .end    = AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
  86        },
  87        {
  88                .name   = "pcmcia-mem",
  89                .flags  = IORESOURCE_MEM,
  90                .start  = AU1000_PCMCIA_MEM_PHYS_ADDR,
  91                .end    = AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
  92        },
  93};
  94
  95static struct platform_device xxs1500_pcmcia_dev = {
  96        .name           = "xxs1500_pcmcia",
  97        .id             = -1,
  98        .num_resources  = ARRAY_SIZE(xxs1500_pcmcia_res),
  99        .resource       = xxs1500_pcmcia_res,
 100};
 101
 102static struct platform_device *xxs1500_devs[] __initdata = {
 103        &xxs1500_pcmcia_dev,
 104};
 105
 106static int __init xxs1500_dev_init(void)
 107{
 108        irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
 109        irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
 110        irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
 111        irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
 112        irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
 113        irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW);
 114
 115        irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
 116        irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
 117        irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW);
 118        irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);
 119        irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */
 120        irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);
 121
 122        return platform_add_devices(xxs1500_devs,
 123                                    ARRAY_SIZE(xxs1500_devs));
 124}
 125device_initcall(xxs1500_dev_init);
 126