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 #include <linux/platform_device.h>
  15 #include <linux/clk/at91_pmc.h>
  16
  17 #include <asm/proc-fns.h>
  18 #include <asm/irq.h>
  19 #include <asm/mach/arch.h>
  20 #include <asm/mach/map.h>
  21 #include <asm/system_misc.h>
  22 #include <mach/at91sam9263.h>
  23 #include <mach/hardware.h>
  24
  25 #include "at91_aic.h"
  26 #include "soc.h"
  27 #include "generic.h"
  28 #include "sam9_smc.h"
  29 #include "pm.h"
  30
  31 #if defined(CONFIG_OLD_CLK_AT91)
  32 #include "clock.h"
  33 /* --------------------------------------------------------------------
  34  *  Clocks
  35  * -------------------------------------------------------------------- */
  36
  37 /*
  38  * The peripheral clocks.
  39  */
  40 static struct clk pioA_clk = {
  41         .name           = "pioA_clk",
  42         .pmc_mask       = 1 << AT91SAM9263_ID_PIOA,
  43         .type           = CLK_TYPE_PERIPHERAL,
  44 };
  45 static struct clk pioB_clk = {
  46         .name           = "pioB_clk",
  47         .pmc_mask       = 1 << AT91SAM9263_ID_PIOB,
  48         .type           = CLK_TYPE_PERIPHERAL,
  49 };
  50 static struct clk pioCDE_clk = {
  51         .name           = "pioCDE_clk",
  52         .pmc_mask       = 1 << AT91SAM9263_ID_PIOCDE,
  53         .type           = CLK_TYPE_PERIPHERAL,
  54 };
  55 static struct clk usart0_clk = {
  56         .name           = "usart0_clk",
  57         .pmc_mask       = 1 << AT91SAM9263_ID_US0,
  58         .type           = CLK_TYPE_PERIPHERAL,
  59 };
  60 static struct clk usart1_clk = {
  61         .name           = "usart1_clk",
  62         .pmc_mask       = 1 << AT91SAM9263_ID_US1,
  63         .type           = CLK_TYPE_PERIPHERAL,
  64 };
  65 static struct clk usart2_clk = {
  66         .name           = "usart2_clk",
  67         .pmc_mask       = 1 << AT91SAM9263_ID_US2,
  68         .type           = CLK_TYPE_PERIPHERAL,
  69 };
  70 static struct clk mmc0_clk = {
  71         .name           = "mci0_clk",
  72         .pmc_mask       = 1 << AT91SAM9263_ID_MCI0,
  73         .type           = CLK_TYPE_PERIPHERAL,
  74 };
  75 static struct clk mmc1_clk = {
  76         .name           = "mci1_clk",
  77         .pmc_mask       = 1 << AT91SAM9263_ID_MCI1,
  78         .type           = CLK_TYPE_PERIPHERAL,
  79 };
  80 static struct clk can_clk = {
  81         .name           = "can_clk",
  82         .pmc_mask       = 1 << AT91SAM9263_ID_CAN,
  83         .type           = CLK_TYPE_PERIPHERAL,
  84 };
  85 static struct clk twi_clk = {
  86         .name           = "twi_clk",
  87         .pmc_mask       = 1 << AT91SAM9263_ID_TWI,
  88         .type           = CLK_TYPE_PERIPHERAL,
  89 };
  90 static struct clk spi0_clk = {
  91         .name           = "spi0_clk",
  92         .pmc_mask       = 1 << AT91SAM9263_ID_SPI0,
  93         .type           = CLK_TYPE_PERIPHERAL,
  94 };
  95 static struct clk spi1_clk = {
  96         .name           = "spi1_clk",
  97         .pmc_mask       = 1 << AT91SAM9263_ID_SPI1,
  98         .type           = CLK_TYPE_PERIPHERAL,
  99 };
 100 static struct clk ssc0_clk = {
 101         .name           = "ssc0_clk",
 102         .pmc_mask       = 1 << AT91SAM9263_ID_SSC0,
 103         .type           = CLK_TYPE_PERIPHERAL,
 104 };
 105 static struct clk ssc1_clk = {
 106         .name           = "ssc1_clk",
 107         .pmc_mask       = 1 << AT91SAM9263_ID_SSC1,
 108         .type           = CLK_TYPE_PERIPHERAL,
 109 };
 110 static struct clk ac97_clk = {
 111         .name           = "ac97_clk",
 112         .pmc_mask       = 1 << AT91SAM9263_ID_AC97C,
 113         .type           = CLK_TYPE_PERIPHERAL,
 114 };
 115 static struct clk tcb_clk = {
 116         .name           = "tcb_clk",
 117         .pmc_mask       = 1 << AT91SAM9263_ID_TCB,
 118         .type           = CLK_TYPE_PERIPHERAL,
 119 };
 120 static struct clk pwm_clk = {
 121         .name           = "pwm_clk",
 122         .pmc_mask       = 1 << AT91SAM9263_ID_PWMC,
 123         .type           = CLK_TYPE_PERIPHERAL,
 124 };
 125 static struct clk macb_clk = {
 126         .name           = "pclk",
 127         .pmc_mask       = 1 << AT91SAM9263_ID_EMAC,
 128         .type           = CLK_TYPE_PERIPHERAL,
 129 };
 130 static struct clk dma_clk = {
 131         .name           = "dma_clk",
 132         .pmc_mask       = 1 << AT91SAM9263_ID_DMA,
 133         .type           = CLK_TYPE_PERIPHERAL,
 134 };
 135 static struct clk twodge_clk = {
 136         .name           = "2dge_clk",
 137         .pmc_mask       = 1 << AT91SAM9263_ID_2DGE,
 138         .type           = CLK_TYPE_PERIPHERAL,
 139 };
 140 static struct clk udc_clk = {
 141         .name           = "udc_clk",
 142         .pmc_mask       = 1 << AT91SAM9263_ID_UDP,
 143         .type           = CLK_TYPE_PERIPHERAL,
 144 };
 145 static struct clk isi_clk = {
 146         .name           = "isi_clk",
 147         .pmc_mask       = 1 << AT91SAM9263_ID_ISI,
 148         .type           = CLK_TYPE_PERIPHERAL,
 149 };
 150 static struct clk lcdc_clk = {
 151         .name           = "lcdc_clk",
 152         .pmc_mask       = 1 << AT91SAM9263_ID_LCDC,
 153         .type           = CLK_TYPE_PERIPHERAL,
 154 };
 155 static struct clk ohci_clk = {
 156         .name           = "ohci_clk",
 157         .pmc_mask       = 1 << AT91SAM9263_ID_UHP,
 158         .type           = CLK_TYPE_PERIPHERAL,
 159 };
 160
 161 static struct clk *periph_clocks[] __initdata = {
 162         &pioA_clk,
 163         &pioB_clk,
 164         &pioCDE_clk,
 165         &usart0_clk,
 166         &usart1_clk,
 167         &usart2_clk,
 168         &mmc0_clk,
 169         &mmc1_clk,
 170         &can_clk,
 171         &twi_clk,
 172         &spi0_clk,
 173         &spi1_clk,
 174         &ssc0_clk,
 175         &ssc1_clk,
 176         &ac97_clk,
 177         &tcb_clk,
 178         &pwm_clk,
 179         &macb_clk,
 180         &twodge_clk,
 181         &udc_clk,
 182         &isi_clk,
 183         &lcdc_clk,
 184         &dma_clk,
 185         &ohci_clk,
 186         // irq0 .. irq1
 187 };
 188
 189 static struct clk_lookup periph_clocks_lookups[] = {
 190         /* One additional fake clock for macb_hclk */
 191         CLKDEV_CON_ID("hclk", &macb_clk),
 192         CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk),
 193         CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk),
 194         CLKDEV_CON_DEV_ID("pclk", "fff98000.ssc", &ssc0_clk),
 195         CLKDEV_CON_DEV_ID("pclk", "fff9c000.ssc", &ssc1_clk),
 196         CLKDEV_CON_DEV_ID("hclk", "at91sam9263-lcdfb.0", &lcdc_clk),
 197         CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk),
 198         CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk),
 199         CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
 200         CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
 201         CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb_clk),
 202         CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9260.0", &twi_clk),
 203         CLKDEV_CON_DEV_ID(NULL, "at91sam9rl-pwm", &pwm_clk),
 204         /* fake hclk clock */
 205         CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk),
 206         CLKDEV_CON_ID("pioA", &pioA_clk),
 207         CLKDEV_CON_ID("pioB", &pioB_clk),
 208         CLKDEV_CON_ID("pioC", &pioCDE_clk),
 209         CLKDEV_CON_ID("pioD", &pioCDE_clk),
 210         CLKDEV_CON_ID("pioE", &pioCDE_clk),
 211         /* more usart lookup table for DT entries */
 212         CLKDEV_CON_DEV_ID("usart", "ffffee00.serial", &mck),
 213         CLKDEV_CON_DEV_ID("usart", "fff8c000.serial", &usart0_clk),
 214         CLKDEV_CON_DEV_ID("usart", "fff90000.serial", &usart1_clk),
 215         CLKDEV_CON_DEV_ID("usart", "fff94000.serial", &usart2_clk),
 216         /* more tc lookup table for DT entries */
 217         CLKDEV_CON_DEV_ID("t0_clk", "fff7c000.timer", &tcb_clk),
 218         CLKDEV_CON_DEV_ID("hclk", "a00000.ohci", &ohci_clk),
 219         CLKDEV_CON_DEV_ID("spi_clk", "fffa4000.spi", &spi0_clk),
 220         CLKDEV_CON_DEV_ID("spi_clk", "fffa8000.spi", &spi1_clk),
 221         CLKDEV_CON_DEV_ID("mci_clk", "fff80000.mmc", &mmc0_clk),
 222         CLKDEV_CON_DEV_ID("mci_clk", "fff84000.mmc", &mmc1_clk),
 223         CLKDEV_CON_DEV_ID(NULL, "fff88000.i2c", &twi_clk),
 224         CLKDEV_CON_DEV_ID(NULL, "fffff200.gpio", &pioA_clk),
 225         CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioB_clk),
 226         CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioCDE_clk),
 227         CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioCDE_clk),
 228         CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioCDE_clk),
 229         CLKDEV_CON_DEV_ID(NULL, "fffb8000.pwm", &pwm_clk),
 230 };
 231
 232 static struct clk_lookup usart_clocks_lookups[] = {
 233         CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
 234         CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
 235         CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
 236         CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
 237 };
 238
 239 /*
 240  * The four programmable clocks.
 241  * You must configure pin multiplexing to bring these signals out.
 242  */
 243 static struct clk pck0 = {
 244         .name           = "pck0",
 245         .pmc_mask       = AT91_PMC_PCK0,
 246         .type           = CLK_TYPE_PROGRAMMABLE,
 247         .id             = 0,
 248 };
 249 static struct clk pck1 = {
 250         .name           = "pck1",
 251         .pmc_mask       = AT91_PMC_PCK1,
 252         .type           = CLK_TYPE_PROGRAMMABLE,
 253         .id             = 1,
 254 };
 255 static struct clk pck2 = {
 256         .name           = "pck2",
 257         .pmc_mask       = AT91_PMC_PCK2,
 258         .type           = CLK_TYPE_PROGRAMMABLE,
 259         .id             = 2,
 260 };
 261 static struct clk pck3 = {
 262         .name           = "pck3",
 263         .pmc_mask       = AT91_PMC_PCK3,
 264         .type           = CLK_TYPE_PROGRAMMABLE,
 265         .id             = 3,
 266 };
 267
 268 static void __init at91sam9263_register_clocks(void)
 269 {
 270         int i;
 271
 272         for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
 273                 clk_register(periph_clocks[i]);
 274
 275         clkdev_add_table(periph_clocks_lookups,
 276                          ARRAY_SIZE(periph_clocks_lookups));
 277         clkdev_add_table(usart_clocks_lookups,
 278                          ARRAY_SIZE(usart_clocks_lookups));
 279
 280         clk_register(&pck0);
 281         clk_register(&pck1);
 282         clk_register(&pck2);
 283         clk_register(&pck3);
 284 }
 285 #else
 286 #define at91sam9263_register_clocks NULL
 287 #endif
 288
 289 /* --------------------------------------------------------------------
 290  *  GPIO
 291  * -------------------------------------------------------------------- */
 292
 293 static struct at91_gpio_bank at91sam9263_gpio[] __initdata = {
 294         {
 295                 .id             = AT91SAM9263_ID_PIOA,
 296                 .regbase        = AT91SAM9263_BASE_PIOA,
 297         }, {
 298                 .id             = AT91SAM9263_ID_PIOB,
 299                 .regbase        = AT91SAM9263_BASE_PIOB,
 300         }, {
 301                 .id             = AT91SAM9263_ID_PIOCDE,
 302                 .regbase        = AT91SAM9263_BASE_PIOC,
 303         }, {
 304                 .id             = AT91SAM9263_ID_PIOCDE,
 305                 .regbase        = AT91SAM9263_BASE_PIOD,
 306         }, {
 307                 .id             = AT91SAM9263_ID_PIOCDE,
 308                 .regbase        = AT91SAM9263_BASE_PIOE,
 309         }
 310 };
 311
 312 /* --------------------------------------------------------------------
 313  *  AT91SAM9263 processor initialization
 314  * -------------------------------------------------------------------- */
 315
 316 static void __init at91sam9263_map_io(void)
 317 {
 318         at91_init_sram(0, AT91SAM9263_SRAM0_BASE, AT91SAM9263_SRAM0_SIZE);
 319         at91_init_sram(1, AT91SAM9263_SRAM1_BASE, AT91SAM9263_SRAM1_SIZE);
 320 }
 321
 322 static void __init at91sam9263_ioremap_registers(void)
 323 {
 324         at91_ioremap_ramc(0, AT91SAM9263_BASE_SDRAMC0, 512);
 325         at91_ioremap_ramc(1, AT91SAM9263_BASE_SDRAMC1, 512);
 326         at91sam926x_ioremap_pit(AT91SAM9263_BASE_PIT);
 327         at91sam9_ioremap_smc(0, AT91SAM9263_BASE_SMC0);
 328         at91sam9_ioremap_smc(1, AT91SAM9263_BASE_SMC1);
 329         at91_ioremap_matrix(AT91SAM9263_BASE_MATRIX);
 330         at91_pm_set_standby(at91sam9_sdram_standby);
 331 }
 332
 333 static void __init at91sam9263_initialize(void)
 334 {
 335         arm_pm_idle = at91sam9_idle;
 336
 337         at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT0);
 338         at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT1);
 339
 340         /* Register GPIO subsystem */
 341         at91_gpio_init(at91sam9263_gpio, 5);
 342 }
 343
 344 static struct resource rstc_resources[] = {
 345         [0] = {
 346                 .start  = AT91SAM9263_BASE_RSTC,
 347                 .end    = AT91SAM9263_BASE_RSTC + SZ_16 - 1,
 348                 .flags  = IORESOURCE_MEM,
 349         },
 350         [1] = {
 351                 .start  = AT91SAM9263_BASE_SDRAMC0,
 352                 .end    = AT91SAM9263_BASE_SDRAMC0 + SZ_512 - 1,
 353                 .flags  = IORESOURCE_MEM,
 354         },
 355 };
 356
 357 static struct platform_device rstc_device = {
 358         .name           = "at91-sam9260-reset",
 359         .resource       = rstc_resources,
 360         .num_resources  = ARRAY_SIZE(rstc_resources),
 361 };
 362
 363 static struct resource shdwc_resources[] = {
 364         [0] = {
 365                 .start  = AT91SAM9263_BASE_SHDWC,
 366                 .end    = AT91SAM9263_BASE_SHDWC + SZ_16 - 1,
 367                 .flags  = IORESOURCE_MEM,
 368         },
 369 };
 370
 371 static struct platform_device shdwc_device = {
 372         .name           = "at91-poweroff",
 373         .resource       = shdwc_resources,
 374         .num_resources  = ARRAY_SIZE(shdwc_resources),
 375 };
 376
 377 static void __init at91sam9263_register_devices(void)
 378 {
 379         platform_device_register(&rstc_device);
 380         platform_device_register(&shdwc_device);
 381 }
 382
 383 /* --------------------------------------------------------------------
 384  *  Interrupt initialization
 385  * -------------------------------------------------------------------- */
 386
 387 /*
 388  * The default interrupt priority levels (0 = lowest, 7 = highest).
 389  */
 390 static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
 391         7,      /* Advanced Interrupt Controller (FIQ) */
 392         7,      /* System Peripherals */
 393         1,      /* Parallel IO Controller A */
 394         1,      /* Parallel IO Controller B */
 395         1,      /* Parallel IO Controller C, D and E */
 396         0,
 397         0,
 398         5,      /* USART 0 */
 399         5,      /* USART 1 */
 400         5,      /* USART 2 */
 401         0,      /* Multimedia Card Interface 0 */
 402         0,      /* Multimedia Card Interface 1 */
 403         3,      /* CAN */
 404         6,      /* Two-Wire Interface */
 405         5,      /* Serial Peripheral Interface 0 */
 406         5,      /* Serial Peripheral Interface 1 */
 407         4,      /* Serial Synchronous Controller 0 */
 408         4,      /* Serial Synchronous Controller 1 */
 409         5,      /* AC97 Controller */
 410         0,      /* Timer Counter 0, 1 and 2 */
 411         0,      /* Pulse Width Modulation Controller */
 412         3,      /* Ethernet */
 413         0,
 414         0,      /* 2D Graphic Engine */
 415         2,      /* USB Device Port */
 416         0,      /* Image Sensor Interface */
 417         3,      /* LDC Controller */
 418         0,      /* DMA Controller */
 419         0,
 420         2,      /* USB Host port */
 421         0,      /* Advanced Interrupt Controller (IRQ0) */
 422         0,      /* Advanced Interrupt Controller (IRQ1) */
 423 };
 424
 425 static void __init at91sam9263_init_time(void)
 426 {
 427         at91sam926x_pit_init();
 428 }
 429
 430 AT91_SOC_START(at91sam9263)
 431         .map_io = at91sam9263_map_io,
 432         .default_irq_priority = at91sam9263_default_irq_priority,
 433         .extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1),
 434         .ioremap_registers = at91sam9263_ioremap_registers,
 435         .register_clocks = at91sam9263_register_clocks,
 436         .register_devices = at91sam9263_register_devices,
 437         .init = at91sam9263_initialize,
 438         .init_time = at91sam9263_init_time,
 439 AT91_SOC_END