arch/arm/mach-at91/at91sam9263.c

   1 /*
   2  * arch/arm/mach-at91/at91sam9263.c
   3  *
   4  *  Copyright (C) 2007 Atmel Corporation.
   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 as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  */
  12
  13 #include <linux/module.h>
  14
  15 #include <asm/mach/arch.h>
  16 #include <asm/mach/map.h>
  17 #include <asm/arch/at91sam9263.h>
  18 #include <asm/arch/at91_pmc.h>
  19 #include <asm/arch/at91_rstc.h>
  20
  21 #include "generic.h"
  22 #include "clock.h"
  23
  24 static struct map_desc at91sam9263_io_desc[] __initdata = {
  25         {
  26                 .virtual        = AT91_VA_BASE_SYS,
  27                 .pfn            = __phys_to_pfn(AT91_BASE_SYS),
  28                 .length         = SZ_16K,
  29                 .type           = MT_DEVICE,
  30         }, {
  31                 .virtual        = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE,
  32                 .pfn            = __phys_to_pfn(AT91SAM9263_SRAM0_BASE),
  33                 .length         = AT91SAM9263_SRAM0_SIZE,
  34                 .type           = MT_DEVICE,
  35         }, {
  36                 .virtual        = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE - AT91SAM9263_SRAM1_SIZE,
  37                 .pfn            = __phys_to_pfn(AT91SAM9263_SRAM1_BASE),
  38                 .length         = AT91SAM9263_SRAM1_SIZE,
  39                 .type           = MT_DEVICE,
  40         },
  41 };
  42
  43 /* --------------------------------------------------------------------
  44  *  Clocks
  45  * -------------------------------------------------------------------- */
  46
  47 /*
  48  * The peripheral clocks.
  49  */
  50 static struct clk pioA_clk = {
  51         .name           = "pioA_clk",
  52         .pmc_mask       = 1 << AT91SAM9263_ID_PIOA,
  53         .type           = CLK_TYPE_PERIPHERAL,
  54 };
  55 static struct clk pioB_clk = {
  56         .name           = "pioB_clk",
  57         .pmc_mask       = 1 << AT91SAM9263_ID_PIOB,
  58         .type           = CLK_TYPE_PERIPHERAL,
  59 };
  60 static struct clk pioCDE_clk = {
  61         .name           = "pioCDE_clk",
  62         .pmc_mask       = 1 << AT91SAM9263_ID_PIOCDE,
  63         .type           = CLK_TYPE_PERIPHERAL,
  64 };
  65 static struct clk usart0_clk = {
  66         .name           = "usart0_clk",
  67         .pmc_mask       = 1 << AT91SAM9263_ID_US0,
  68         .type           = CLK_TYPE_PERIPHERAL,
  69 };
  70 static struct clk usart1_clk = {
  71         .name           = "usart1_clk",
  72         .pmc_mask       = 1 << AT91SAM9263_ID_US1,
  73         .type           = CLK_TYPE_PERIPHERAL,
  74 };
  75 static struct clk usart2_clk = {
  76         .name           = "usart2_clk",
  77         .pmc_mask       = 1 << AT91SAM9263_ID_US2,
  78         .type           = CLK_TYPE_PERIPHERAL,
  79 };
  80 static struct clk mmc0_clk = {
  81         .name           = "mci0_clk",
  82         .pmc_mask       = 1 << AT91SAM9263_ID_MCI0,
  83         .type           = CLK_TYPE_PERIPHERAL,
  84 };
  85 static struct clk mmc1_clk = {
  86         .name           = "mci1_clk",
  87         .pmc_mask       = 1 << AT91SAM9263_ID_MCI1,
  88         .type           = CLK_TYPE_PERIPHERAL,
  89 };
  90 static struct clk can_clk = {
  91         .name           = "can_clk",
  92         .pmc_mask       = 1 << AT91SAM9263_ID_CAN,
  93         .type           = CLK_TYPE_PERIPHERAL,
  94 };
  95 static struct clk twi_clk = {
  96         .name           = "twi_clk",
  97         .pmc_mask       = 1 << AT91SAM9263_ID_TWI,
  98         .type           = CLK_TYPE_PERIPHERAL,
  99 };
 100 static struct clk spi0_clk = {
 101         .name           = "spi0_clk",
 102         .pmc_mask       = 1 << AT91SAM9263_ID_SPI0,
 103         .type           = CLK_TYPE_PERIPHERAL,
 104 };
 105 static struct clk spi1_clk = {
 106         .name           = "spi1_clk",
 107         .pmc_mask       = 1 << AT91SAM9263_ID_SPI1,
 108         .type           = CLK_TYPE_PERIPHERAL,
 109 };
 110 static struct clk ssc0_clk = {
 111         .name           = "ssc0_clk",
 112         .pmc_mask       = 1 << AT91SAM9263_ID_SSC0,
 113         .type           = CLK_TYPE_PERIPHERAL,
 114 };
 115 static struct clk ssc1_clk = {
 116         .name           = "ssc1_clk",
 117         .pmc_mask       = 1 << AT91SAM9263_ID_SSC1,
 118         .type           = CLK_TYPE_PERIPHERAL,
 119 };
 120 static struct clk ac97_clk = {
 121         .name           = "ac97_clk",
 122         .pmc_mask       = 1 << AT91SAM9263_ID_AC97C,
 123         .type           = CLK_TYPE_PERIPHERAL,
 124 };
 125 static struct clk tcb_clk = {
 126         .name           = "tcb_clk",
 127         .pmc_mask       = 1 << AT91SAM9263_ID_TCB,
 128         .type           = CLK_TYPE_PERIPHERAL,
 129 };
 130 static struct clk pwmc_clk = {
 131         .name           = "pwmc_clk",
 132         .pmc_mask       = 1 << AT91SAM9263_ID_PWMC,
 133         .type           = CLK_TYPE_PERIPHERAL,
 134 };
 135 static struct clk macb_clk = {
 136         .name           = "macb_clk",
 137         .pmc_mask       = 1 << AT91SAM9263_ID_EMAC,
 138         .type           = CLK_TYPE_PERIPHERAL,
 139 };
 140 static struct clk dma_clk = {
 141         .name           = "dma_clk",
 142         .pmc_mask       = 1 << AT91SAM9263_ID_DMA,
 143         .type           = CLK_TYPE_PERIPHERAL,
 144 };
 145 static struct clk twodge_clk = {
 146         .name           = "2dge_clk",
 147         .pmc_mask       = 1 << AT91SAM9263_ID_2DGE,
 148         .type           = CLK_TYPE_PERIPHERAL,
 149 };
 150 static struct clk udc_clk = {
 151         .name           = "udc_clk",
 152         .pmc_mask       = 1 << AT91SAM9263_ID_UDP,
 153         .type           = CLK_TYPE_PERIPHERAL,
 154 };
 155 static struct clk isi_clk = {
 156         .name           = "isi_clk",
 157         .pmc_mask       = 1 << AT91SAM9263_ID_ISI,
 158         .type           = CLK_TYPE_PERIPHERAL,
 159 };
 160 static struct clk lcdc_clk = {
 161         .name           = "lcdc_clk",
 162         .pmc_mask       = 1 << AT91SAM9263_ID_LCDC,
 163         .type           = CLK_TYPE_PERIPHERAL,
 164 };
 165 static struct clk ohci_clk = {
 166         .name           = "ohci_clk",
 167         .pmc_mask       = 1 << AT91SAM9263_ID_UHP,
 168         .type           = CLK_TYPE_PERIPHERAL,
 169 };
 170
 171 static struct clk *periph_clocks[] __initdata = {
 172         &pioA_clk,
 173         &pioB_clk,
 174         &pioCDE_clk,
 175         &usart0_clk,
 176         &usart1_clk,
 177         &usart2_clk,
 178         &mmc0_clk,
 179         &mmc1_clk,
 180         &can_clk,
 181         &twi_clk,
 182         &spi0_clk,
 183         &spi1_clk,
 184         &ssc0_clk,
 185         &ssc1_clk,
 186         &ac97_clk,
 187         &tcb_clk,
 188         &pwmc_clk,
 189         &macb_clk,
 190         &twodge_clk,
 191         &udc_clk,
 192         &isi_clk,
 193         &lcdc_clk,
 194         &dma_clk,
 195         &ohci_clk,
 196         // irq0 .. irq1
 197 };
 198
 199 /*
 200  * The four programmable clocks.
 201  * You must configure pin multiplexing to bring these signals out.
 202  */
 203 static struct clk pck0 = {
 204         .name           = "pck0",
 205         .pmc_mask       = AT91_PMC_PCK0,
 206         .type           = CLK_TYPE_PROGRAMMABLE,
 207         .id             = 0,
 208 };
 209 static struct clk pck1 = {
 210         .name           = "pck1",
 211         .pmc_mask       = AT91_PMC_PCK1,
 212         .type           = CLK_TYPE_PROGRAMMABLE,
 213         .id             = 1,
 214 };
 215 static struct clk pck2 = {
 216         .name           = "pck2",
 217         .pmc_mask       = AT91_PMC_PCK2,
 218         .type           = CLK_TYPE_PROGRAMMABLE,
 219         .id             = 2,
 220 };
 221 static struct clk pck3 = {
 222         .name           = "pck3",
 223         .pmc_mask       = AT91_PMC_PCK3,
 224         .type           = CLK_TYPE_PROGRAMMABLE,
 225         .id             = 3,
 226 };
 227
 228 static void __init at91sam9263_register_clocks(void)
 229 {
 230         int i;
 231
 232         for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
 233                 clk_register(periph_clocks[i]);
 234
 235         clk_register(&pck0);
 236         clk_register(&pck1);
 237         clk_register(&pck2);
 238         clk_register(&pck3);
 239 }
 240
 241 /* --------------------------------------------------------------------
 242  *  GPIO
 243  * -------------------------------------------------------------------- */
 244
 245 static struct at91_gpio_bank at91sam9263_gpio[] = {
 246         {
 247                 .id             = AT91SAM9263_ID_PIOA,
 248                 .offset         = AT91_PIOA,
 249                 .clock          = &pioA_clk,
 250         }, {
 251                 .id             = AT91SAM9263_ID_PIOB,
 252                 .offset         = AT91_PIOB,
 253                 .clock          = &pioB_clk,
 254         }, {
 255                 .id             = AT91SAM9263_ID_PIOCDE,
 256                 .offset         = AT91_PIOC,
 257                 .clock          = &pioCDE_clk,
 258         }, {
 259                 .id             = AT91SAM9263_ID_PIOCDE,
 260                 .offset         = AT91_PIOD,
 261                 .clock          = &pioCDE_clk,
 262         }, {
 263                 .id             = AT91SAM9263_ID_PIOCDE,
 264                 .offset         = AT91_PIOE,
 265                 .clock          = &pioCDE_clk,
 266         }
 267 };
 268
 269 static void at91sam9263_reset(void)
 270 {
 271         at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
 272 }
 273
 274
 275 /* --------------------------------------------------------------------
 276  *  AT91SAM9263 processor initialization
 277  * -------------------------------------------------------------------- */
 278
 279 void __init at91sam9263_initialize(unsigned long main_clock)
 280 {
 281         /* Map peripherals */
 282         iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));
 283
 284         at91_arch_reset = at91sam9263_reset;
 285         at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
 286
 287         /* Init clock subsystem */
 288         at91_clock_init(main_clock);
 289
 290         /* Register the processor-specific clocks */
 291         at91sam9263_register_clocks();
 292
 293         /* Register GPIO subsystem */
 294         at91_gpio_init(at91sam9263_gpio, 5);
 295 }
 296
 297 /* --------------------------------------------------------------------
 298  *  Interrupt initialization
 299  * -------------------------------------------------------------------- */
 300
 301 /*
 302  * The default interrupt priority levels (0 = lowest, 7 = highest).
 303  */
 304 static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
 305         7,      /* Advanced Interrupt Controller (FIQ) */
 306         7,      /* System Peripherals */
 307         0,      /* Parallel IO Controller A */
 308         0,      /* Parallel IO Controller B */
 309         0,      /* Parallel IO Controller C, D and E */
 310         0,
 311         0,
 312         6,      /* USART 0 */
 313         6,      /* USART 1 */
 314         6,      /* USART 2 */
 315         0,      /* Multimedia Card Interface 0 */
 316         0,      /* Multimedia Card Interface 1 */
 317         4,      /* CAN */
 318         0,      /* Two-Wire Interface */
 319         6,      /* Serial Peripheral Interface 0 */
 320         6,      /* Serial Peripheral Interface 1 */
 321         5,      /* Serial Synchronous Controller 0 */
 322         5,      /* Serial Synchronous Controller 1 */
 323         6,      /* AC97 Controller */
 324         0,      /* Timer Counter 0, 1 and 2 */
 325         0,      /* Pulse Width Modulation Controller */
 326         3,      /* Ethernet */
 327         0,
 328         0,      /* 2D Graphic Engine */
 329         3,      /* USB Device Port */
 330         0,      /* Image Sensor Interface */
 331         3,      /* LDC Controller */
 332         0,      /* DMA Controller */
 333         0,
 334         3,      /* USB Host port */
 335         0,      /* Advanced Interrupt Controller (IRQ0) */
 336         0,      /* Advanced Interrupt Controller (IRQ1) */
 337 };
 338
 339 void __init at91sam9263_init_interrupts(unsigned int priority[NR_AIC_IRQS])
 340 {
 341         if (!priority)
 342                 priority = at91sam9263_default_irq_priority;
 343
 344         /* Initialize the AIC interrupt controller */
 345         at91_aic_init(priority);
 346
 347         /* Enable GPIO interrupts */
 348         at91_gpio_irq_setup();
 349 }