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/clk/mmp.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/platform_data/mv_usb.h>
  19 #include <linux/dma-mapping.h>
  20
  21 #include <asm/mach/time.h>
  22 #include <asm/system_misc.h>
  23
  24 #include "addr-map.h"
  25 #include "clock.h"
  26 #include "common.h"
  27 #include "cputype.h"
  28 #include "devices.h"
  29 #include "irqs.h"
  30 #include "mfp.h"
  31 #include "pxa168.h"
  32 #include "regs-apbc.h"
  33 #include "regs-apmu.h"
  34 #include "regs-usb.h"
  35
  36 #define MFPR_VIRT_BASE  (APB_VIRT_BASE + 0x1e000)
  37
  38 static 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
  48 void __init pxa168_init_irq(void)
  49 {
  50         icu_init_irq();
  51 }
  52
  53 static 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                 pxa168_clk_init(APB_PHYS_BASE + 0x50000,
  59                                 AXI_PHYS_BASE + 0x82800,
  60                                 APB_PHYS_BASE + 0x15000);
  61         }
  62
  63         return 0;
  64 }
  65 postcore_initcall(pxa168_init);
  66
  67 /* system timer - clock enabled, 3.25MHz */
  68 #define TIMER_CLK_RST   (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
  69 #define APBC_TIMERS     APBC_REG(0x34)
  70
  71 void __init pxa168_timer_init(void)
  72 {
  73         /* this is early, we have to initialize the CCU registers by
  74          * ourselves instead of using clk_* API. Clock rate is defined
  75          * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
  76          */
  77         __raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
  78
  79         /* 3.25MHz, bus/functional clock enabled, release reset */
  80         __raw_writel(TIMER_CLK_RST, APBC_TIMERS);
  81
  82         timer_init(IRQ_PXA168_TIMER1);
  83 }
  84
  85 void pxa168_clear_keypad_wakeup(void)
  86 {
  87         uint32_t val;
  88         uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
  89
  90         /* wake event clear is needed in order to clear keypad interrupt */
  91         val = __raw_readl(APMU_WAKE_CLR);
  92         __raw_writel(val |  mask, APMU_WAKE_CLR);
  93 }
  94
  95 /* on-chip devices */
  96 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
  97 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
  98 PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
  99 PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
 100 PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
 101 PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
 102 PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
 103 PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
 104 PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
 105 PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
 106 PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
 107 PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
 108 PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
 109 PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
 110 PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
 111 PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
 112 PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
 113 PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
 114
 115 struct resource pxa168_resource_gpio[] = {
 116         {
 117                 .start  = 0xd4019000,
 118                 .end    = 0xd4019fff,
 119                 .flags  = IORESOURCE_MEM,
 120         }, {
 121                 .start  = IRQ_PXA168_GPIOX,
 122                 .end    = IRQ_PXA168_GPIOX,
 123                 .name   = "gpio_mux",
 124                 .flags  = IORESOURCE_IRQ,
 125         },
 126 };
 127
 128 struct platform_device pxa168_device_gpio = {
 129         .name           = "mmp-gpio",
 130         .id             = -1,
 131         .num_resources  = ARRAY_SIZE(pxa168_resource_gpio),
 132         .resource       = pxa168_resource_gpio,
 133 };
 134
 135 struct resource pxa168_usb_host_resources[] = {
 136         /* USB Host conroller register base */
 137         [0] = {
 138                 .start  = PXA168_U2H_REGBASE + U2x_CAPREGS_OFFSET,
 139                 .end    = PXA168_U2H_REGBASE + USB_REG_RANGE,
 140                 .flags  = IORESOURCE_MEM,
 141                 .name   = "capregs",
 142         },
 143         /* USB PHY register base */
 144         [1] = {
 145                 .start  = PXA168_U2H_PHYBASE,
 146                 .end    = PXA168_U2H_PHYBASE + USB_PHY_RANGE,
 147                 .flags  = IORESOURCE_MEM,
 148                 .name   = "phyregs",
 149         },
 150         [2] = {
 151                 .start  = IRQ_PXA168_USB2,
 152                 .end    = IRQ_PXA168_USB2,
 153                 .flags  = IORESOURCE_IRQ,
 154         },
 155 };
 156
 157 static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
 158 struct platform_device pxa168_device_usb_host = {
 159         .name = "pxa-sph",
 160         .id   = -1,
 161         .dev  = {
 162                 .dma_mask = &pxa168_usb_host_dmamask,
 163                 .coherent_dma_mask = DMA_BIT_MASK(32),
 164         },
 165
 166         .num_resources = ARRAY_SIZE(pxa168_usb_host_resources),
 167         .resource      = pxa168_usb_host_resources,
 168 };
 169
 170 int __init pxa168_add_usb_host(struct mv_usb_platform_data *pdata)
 171 {
 172         pxa168_device_usb_host.dev.platform_data = pdata;
 173         return platform_device_register(&pxa168_device_usb_host);
 174 }
 175
 176 void pxa168_restart(enum reboot_mode mode, const char *cmd)
 177 {
 178         soft_restart(0xffff0000);
 179 }