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
  18 #include <asm/mach/time.h>
  19 #include <mach/addr-map.h>
  20 #include <mach/cputype.h>
  21 #include <mach/regs-apbc.h>
  22 #include <mach/regs-apmu.h>
  23 #include <mach/irqs.h>
  24 #include <mach/dma.h>
  25 #include <mach/devices.h>
  26 #include <mach/mfp.h>
  27 #include <linux/dma-mapping.h>
  28 #include <mach/pxa168.h>
  29
  30 #include "common.h"
  31 #include "clock.h"
  32
  33 #define MFPR_VIRT_BASE  (APB_VIRT_BASE + 0x1e000)
  34
  35 static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata =
  36 {
  37         MFP_ADDR_X(GPIO0,   GPIO36,  0x04c),
  38         MFP_ADDR_X(GPIO37,  GPIO55,  0x000),
  39         MFP_ADDR_X(GPIO56,  GPIO123, 0x0e0),
  40         MFP_ADDR_X(GPIO124, GPIO127, 0x0f4),
  41
  42         MFP_ADDR_END,
  43 };
  44
  45 void __init pxa168_init_irq(void)
  46 {
  47         icu_init_irq();
  48 }
  49
  50 /* APB peripheral clocks */
  51 static APBC_CLK(uart1, PXA168_UART1, 1, 14745600);
  52 static APBC_CLK(uart2, PXA168_UART2, 1, 14745600);
  53 static APBC_CLK(uart3, PXA168_UART3, 1, 14745600);
  54 static APBC_CLK(twsi0, PXA168_TWSI0, 1, 33000000);
  55 static APBC_CLK(twsi1, PXA168_TWSI1, 1, 33000000);
  56 static APBC_CLK(pwm1, PXA168_PWM1, 1, 13000000);
  57 static APBC_CLK(pwm2, PXA168_PWM2, 1, 13000000);
  58 static APBC_CLK(pwm3, PXA168_PWM3, 1, 13000000);
  59 static APBC_CLK(pwm4, PXA168_PWM4, 1, 13000000);
  60 static APBC_CLK(ssp1, PXA168_SSP1, 4, 0);
  61 static APBC_CLK(ssp2, PXA168_SSP2, 4, 0);
  62 static APBC_CLK(ssp3, PXA168_SSP3, 4, 0);
  63 static APBC_CLK(ssp4, PXA168_SSP4, 4, 0);
  64 static APBC_CLK(ssp5, PXA168_SSP5, 4, 0);
  65 static APBC_CLK(gpio, PXA168_GPIO, 0, 13000000);
  66 static APBC_CLK(keypad, PXA168_KPC, 0, 32000);
  67
  68 static APMU_CLK(nand, NAND, 0x19b, 156000000);
  69 static APMU_CLK(lcd, LCD, 0x7f, 312000000);
  70 static APMU_CLK(eth, ETH, 0x09, 0);
  71 static APMU_CLK(usb, USB, 0x12, 0);
  72
  73 /* device and clock bindings */
  74 static struct clk_lookup pxa168_clkregs[] = {
  75         INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
  76         INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
  77         INIT_CLKREG(&clk_uart3, "pxa2xx-uart.2", NULL),
  78         INIT_CLKREG(&clk_twsi0, "pxa2xx-i2c.0", NULL),
  79         INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.1", NULL),
  80         INIT_CLKREG(&clk_pwm1, "pxa168-pwm.0", NULL),
  81         INIT_CLKREG(&clk_pwm2, "pxa168-pwm.1", NULL),
  82         INIT_CLKREG(&clk_pwm3, "pxa168-pwm.2", NULL),
  83         INIT_CLKREG(&clk_pwm4, "pxa168-pwm.3", NULL),
  84         INIT_CLKREG(&clk_ssp1, "pxa168-ssp.0", NULL),
  85         INIT_CLKREG(&clk_ssp2, "pxa168-ssp.1", NULL),
  86         INIT_CLKREG(&clk_ssp3, "pxa168-ssp.2", NULL),
  87         INIT_CLKREG(&clk_ssp4, "pxa168-ssp.3", NULL),
  88         INIT_CLKREG(&clk_ssp5, "pxa168-ssp.4", NULL),
  89         INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
  90         INIT_CLKREG(&clk_lcd, "pxa168-fb", NULL),
  91         INIT_CLKREG(&clk_gpio, "pxa-gpio", NULL),
  92         INIT_CLKREG(&clk_keypad, "pxa27x-keypad", NULL),
  93         INIT_CLKREG(&clk_eth, "pxa168-eth", "MFUCLK"),
  94         INIT_CLKREG(&clk_usb, "pxa168-ehci", "PXA168-USBCLK"),
  95 };
  96
  97 static int __init pxa168_init(void)
  98 {
  99         if (cpu_is_pxa168()) {
 100                 mfp_init_base(MFPR_VIRT_BASE);
 101                 mfp_init_addr(pxa168_mfp_addr_map);
 102                 pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
 103                 clkdev_add_table(ARRAY_AND_SIZE(pxa168_clkregs));
 104         }
 105
 106         return 0;
 107 }
 108 postcore_initcall(pxa168_init);
 109
 110 /* system timer - clock enabled, 3.25MHz */
 111 #define TIMER_CLK_RST   (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
 112
 113 static void __init pxa168_timer_init(void)
 114 {
 115         /* this is early, we have to initialize the CCU registers by
 116          * ourselves instead of using clk_* API. Clock rate is defined
 117          * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
 118          */
 119         __raw_writel(APBC_APBCLK | APBC_RST, APBC_PXA168_TIMERS);
 120
 121         /* 3.25MHz, bus/functional clock enabled, release reset */
 122         __raw_writel(TIMER_CLK_RST, APBC_PXA168_TIMERS);
 123
 124         timer_init(IRQ_PXA168_TIMER1);
 125 }
 126
 127 struct sys_timer pxa168_timer = {
 128         .init   = pxa168_timer_init,
 129 };
 130
 131 void pxa168_clear_keypad_wakeup(void)
 132 {
 133         uint32_t val;
 134         uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
 135
 136         /* wake event clear is needed in order to clear keypad interrupt */
 137         val = __raw_readl(APMU_WAKE_CLR);
 138         __raw_writel(val |  mask, APMU_WAKE_CLR);
 139 }
 140
 141 /* on-chip devices */
 142 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
 143 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
 144 PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
 145 PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
 146 PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
 147 PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
 148 PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
 149 PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
 150 PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
 151 PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
 152 PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
 153 PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
 154 PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
 155 PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
 156 PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
 157 PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
 158 PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
 159 PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
 160
 161 struct resource pxa168_resource_gpio[] = {
 162         {
 163                 .start  = 0xd4019000,
 164                 .end    = 0xd4019fff,
 165                 .flags  = IORESOURCE_MEM,
 166         }, {
 167                 .start  = IRQ_PXA168_GPIOX,
 168                 .end    = IRQ_PXA168_GPIOX,
 169                 .flags  = IORESOURCE_IRQ,
 170         },
 171 };
 172
 173 struct platform_device pxa168_device_gpio = {
 174         .name           = "pxa-gpio",
 175         .id             = -1,
 176         .num_resources  = ARRAY_SIZE(pxa168_resource_gpio),
 177         .resource       = pxa168_resource_gpio,
 178 };
 179
 180 struct resource pxa168_usb_host_resources[] = {
 181         /* USB Host conroller register base */
 182         [0] = {
 183                 .start  = 0xd4209000,
 184                 .end    = 0xd4209000 + 0x200,
 185                 .flags  = IORESOURCE_MEM,
 186                 .name   = "pxa168-usb-host",
 187         },
 188         /* USB PHY register base */
 189         [1] = {
 190                 .start  = 0xd4206000,
 191                 .end    = 0xd4206000 + 0xff,
 192                 .flags  = IORESOURCE_MEM,
 193                 .name   = "pxa168-usb-phy",
 194         },
 195         [2] = {
 196                 .start  = IRQ_PXA168_USB2,
 197                 .end    = IRQ_PXA168_USB2,
 198                 .flags  = IORESOURCE_IRQ,
 199         },
 200 };
 201
 202 static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
 203 struct platform_device pxa168_device_usb_host = {
 204         .name = "pxa168-ehci",
 205         .id   = -1,
 206         .dev  = {
 207                 .dma_mask = &pxa168_usb_host_dmamask,
 208                 .coherent_dma_mask = DMA_BIT_MASK(32),
 209         },
 210
 211         .num_resources = ARRAY_SIZE(pxa168_usb_host_resources),
 212         .resource      = pxa168_usb_host_resources,
 213 };
 214
 215 int __init pxa168_add_usb_host(struct pxa168_usb_pdata *pdata)
 216 {
 217         pxa168_device_usb_host.dev.platform_data = pdata;
 218         return platform_device_register(&pxa168_device_usb_host);
 219 }
 220
 221 void pxa168_restart(char mode, const char *cmd)
 222 {
 223         soft_restart(0xffff0000);
 224 }