LXR linux/arch/arm/mach-mmp/pxa168.c

   1/*
   2 *  linux/arch/arm/mach-mmp/pxa168.c
   3 *
   4 *  Code specific to PXA168
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation.
   9 */
  10#include <linux/module.h>
  11#include <linux/kernel.h>
  12#include <linux/init.h>
  13#include <linux/list.h>
  14#include <linux/io.h>
  15#include <linux/clk.h>
  16#include <linux/platform_device.h>
  17#include <linux/platform_data/mv_usb.h>
  18
  19#include <asm/mach/time.h>
  20#include <asm/system_misc.h>
  21#include <mach/cputype.h>
  22#include <mach/addr-map.h>
  23#include <mach/regs-apbc.h>
  24#include <mach/regs-apmu.h>
  25#include <mach/irqs.h>
  26#include <mach/dma.h>
  27#include <mach/devices.h>
  28#include <mach/mfp.h>
  29#include <linux/dma-mapping.h>
  30#include <mach/pxa168.h>
  31#include <mach/regs-usb.h>
  32
  33#include "common.h"
  34#include "clock.h"
  35
  36#define MFPR_VIRT_BASE  (APB_VIRT_BASE + 0x1e000)
  37
  38static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata =
  39{
  40        MFP_ADDR_X(GPIO0,   GPIO36,  0x04c),
  41        MFP_ADDR_X(GPIO37,  GPIO55,  0x000),
  42        MFP_ADDR_X(GPIO56,  GPIO123, 0x0e0),
  43        MFP_ADDR_X(GPIO124, GPIO127, 0x0f4),
  44
  45        MFP_ADDR_END,
  46};
  47
  48void __init pxa168_init_irq(void)
  49{
  50        icu_init_irq();
  51}
  52
  53static int __init pxa168_init(void)
  54{
  55        if (cpu_is_pxa168()) {
  56                mfp_init_base(MFPR_VIRT_BASE);
  57                mfp_init_addr(pxa168_mfp_addr_map);
  58                pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
  59                pxa168_clk_init();
  60        }
  61
  62        return 0;
  63}
  64postcore_initcall(pxa168_init);
  65
  66/* system timer - clock enabled, 3.25MHz */
  67#define TIMER_CLK_RST   (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
  68#define APBC_TIMERS     APBC_REG(0x34)
  69
  70void __init pxa168_timer_init(void)
  71{
  72        /* this is early, we have to initialize the CCU registers by
  73         * ourselves instead of using clk_* API. Clock rate is defined
  74         * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
  75         */
  76        __raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
  77
  78        /* 3.25MHz, bus/functional clock enabled, release reset */
  79        __raw_writel(TIMER_CLK_RST, APBC_TIMERS);
  80
  81        timer_init(IRQ_PXA168_TIMER1);
  82}
  83
  84void pxa168_clear_keypad_wakeup(void)
  85{
  86        uint32_t val;
  87        uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
  88
  89        /* wake event clear is needed in order to clear keypad interrupt */
  90        val = __raw_readl(APMU_WAKE_CLR);
  91        __raw_writel(val |  mask, APMU_WAKE_CLR);
  92}
  93
  94/* on-chip devices */
  95PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
  96PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
  97PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
  98PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
  99PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
 100PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
 101PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
 102PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
 103PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
 104PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
 105PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
 106PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
 107PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
 108PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
 109PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
 110PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
 111PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
 112PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
 113
 114struct resource pxa168_resource_gpio[] = {
 115        {
 116                .start  = 0xd4019000,
 117                .end    = 0xd4019fff,
 118                .flags  = IORESOURCE_MEM,
 119        }, {
 120                .start  = IRQ_PXA168_GPIOX,
 121                .end    = IRQ_PXA168_GPIOX,
 122                .name   = "gpio_mux",
 123                .flags  = IORESOURCE_IRQ,
 124        },
 125};
 126
 127struct platform_device pxa168_device_gpio = {
 128        .name           = "mmp-gpio",
 129        .id             = -1,
 130        .num_resources  = ARRAY_SIZE(pxa168_resource_gpio),
 131        .resource       = pxa168_resource_gpio,
 132};
 133
 134struct resource pxa168_usb_host_resources[] = {
 135        /* USB Host conroller register base */
 136        [0] = {
 137                .start  = PXA168_U2H_REGBASE + U2x_CAPREGS_OFFSET,
 138                .end    = PXA168_U2H_REGBASE + USB_REG_RANGE,
 139                .flags  = IORESOURCE_MEM,
 140                .name   = "capregs",
 141        },
 142        /* USB PHY register base */
 143        [1] = {
 144                .start  = PXA168_U2H_PHYBASE,
 145                .end    = PXA168_U2H_PHYBASE + USB_PHY_RANGE,
 146                .flags  = IORESOURCE_MEM,
 147                .name   = "phyregs",
 148        },
 149        [2] = {
 150                .start  = IRQ_PXA168_USB2,
 151                .end    = IRQ_PXA168_USB2,
 152                .flags  = IORESOURCE_IRQ,
 153        },
 154};
 155
 156static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
 157struct platform_device pxa168_device_usb_host = {
 158        .name = "pxa-sph",
 159        .id   = -1,
 160        .dev  = {
 161                .dma_mask = &pxa168_usb_host_dmamask,
 162                .coherent_dma_mask = DMA_BIT_MASK(32),
 163        },
 164
 165        .num_resources = ARRAY_SIZE(pxa168_usb_host_resources),
 166        .resource      = pxa168_usb_host_resources,
 167};
 168
 169int __init pxa168_add_usb_host(struct mv_usb_platform_data *pdata)
 170{
 171        pxa168_device_usb_host.dev.platform_data = pdata;
 172        return platform_device_register(&pxa168_device_usb_host);
 173}
 174
 175void pxa168_restart(enum reboot_mode mode, const char *cmd)
 176{
 177        soft_restart(0xffff0000);
 178}
 179