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/irq.h>
  16 #include <asm/mach/arch.h>
  17 #include <asm/mach/map.h>
  18 #include <mach/at91sam9263.h>
  19 #include <mach/at91_pmc.h>
  20 #include <mach/at91_rstc.h>
  21
  22 #include "soc.h"
  23 #include "generic.h"
  24 #include "clock.h"
  25 #include "sam9_smc.h"
  26
  27 /* --------------------------------------------------------------------
  28  *  Clocks
  29  * -------------------------------------------------------------------- */
  30
  31 /*
  32  * The peripheral clocks.
  33  */
  34 static struct clk pioA_clk = {
  35         .name           = "pioA_clk",
  36         .pmc_mask       = 1 << AT91SAM9263_ID_PIOA,
  37         .type           = CLK_TYPE_PERIPHERAL,
  38 };
  39 static struct clk pioB_clk = {
  40         .name           = "pioB_clk",
  41         .pmc_mask       = 1 << AT91SAM9263_ID_PIOB,
  42         .type           = CLK_TYPE_PERIPHERAL,
  43 };
  44 static struct clk pioCDE_clk = {
  45         .name           = "pioCDE_clk",
  46         .pmc_mask       = 1 << AT91SAM9263_ID_PIOCDE,
  47         .type           = CLK_TYPE_PERIPHERAL,
  48 };
  49 static struct clk usart0_clk = {
  50         .name           = "usart0_clk",
  51         .pmc_mask       = 1 << AT91SAM9263_ID_US0,
  52         .type           = CLK_TYPE_PERIPHERAL,
  53 };
  54 static struct clk usart1_clk = {
  55         .name           = "usart1_clk",
  56         .pmc_mask       = 1 << AT91SAM9263_ID_US1,
  57         .type           = CLK_TYPE_PERIPHERAL,
  58 };
  59 static struct clk usart2_clk = {
  60         .name           = "usart2_clk",
  61         .pmc_mask       = 1 << AT91SAM9263_ID_US2,
  62         .type           = CLK_TYPE_PERIPHERAL,
  63 };
  64 static struct clk mmc0_clk = {
  65         .name           = "mci0_clk",
  66         .pmc_mask       = 1 << AT91SAM9263_ID_MCI0,
  67         .type           = CLK_TYPE_PERIPHERAL,
  68 };
  69 static struct clk mmc1_clk = {
  70         .name           = "mci1_clk",
  71         .pmc_mask       = 1 << AT91SAM9263_ID_MCI1,
  72         .type           = CLK_TYPE_PERIPHERAL,
  73 };
  74 static struct clk can_clk = {
  75         .name           = "can_clk",
  76         .pmc_mask       = 1 << AT91SAM9263_ID_CAN,
  77         .type           = CLK_TYPE_PERIPHERAL,
  78 };
  79 static struct clk twi_clk = {
  80         .name           = "twi_clk",
  81         .pmc_mask       = 1 << AT91SAM9263_ID_TWI,
  82         .type           = CLK_TYPE_PERIPHERAL,
  83 };
  84 static struct clk spi0_clk = {
  85         .name           = "spi0_clk",
  86         .pmc_mask       = 1 << AT91SAM9263_ID_SPI0,
  87         .type           = CLK_TYPE_PERIPHERAL,
  88 };
  89 static struct clk spi1_clk = {
  90         .name           = "spi1_clk",
  91         .pmc_mask       = 1 << AT91SAM9263_ID_SPI1,
  92         .type           = CLK_TYPE_PERIPHERAL,
  93 };
  94 static struct clk ssc0_clk = {
  95         .name           = "ssc0_clk",
  96         .pmc_mask       = 1 << AT91SAM9263_ID_SSC0,
  97         .type           = CLK_TYPE_PERIPHERAL,
  98 };
  99 static struct clk ssc1_clk = {
 100         .name           = "ssc1_clk",
 101         .pmc_mask       = 1 << AT91SAM9263_ID_SSC1,
 102         .type           = CLK_TYPE_PERIPHERAL,
 103 };
 104 static struct clk ac97_clk = {
 105         .name           = "ac97_clk",
 106         .pmc_mask       = 1 << AT91SAM9263_ID_AC97C,
 107         .type           = CLK_TYPE_PERIPHERAL,
 108 };
 109 static struct clk tcb_clk = {
 110         .name           = "tcb_clk",
 111         .pmc_mask       = 1 << AT91SAM9263_ID_TCB,
 112         .type           = CLK_TYPE_PERIPHERAL,
 113 };
 114 static struct clk pwm_clk = {
 115         .name           = "pwm_clk",
 116         .pmc_mask       = 1 << AT91SAM9263_ID_PWMC,
 117         .type           = CLK_TYPE_PERIPHERAL,
 118 };
 119 static struct clk macb_clk = {
 120         .name           = "pclk",
 121         .pmc_mask       = 1 << AT91SAM9263_ID_EMAC,
 122         .type           = CLK_TYPE_PERIPHERAL,
 123 };
 124 static struct clk dma_clk = {
 125         .name           = "dma_clk",
 126         .pmc_mask       = 1 << AT91SAM9263_ID_DMA,
 127         .type           = CLK_TYPE_PERIPHERAL,
 128 };
 129 static struct clk twodge_clk = {
 130         .name           = "2dge_clk",
 131         .pmc_mask       = 1 << AT91SAM9263_ID_2DGE,
 132         .type           = CLK_TYPE_PERIPHERAL,
 133 };
 134 static struct clk udc_clk = {
 135         .name           = "udc_clk",
 136         .pmc_mask       = 1 << AT91SAM9263_ID_UDP,
 137         .type           = CLK_TYPE_PERIPHERAL,
 138 };
 139 static struct clk isi_clk = {
 140         .name           = "isi_clk",
 141         .pmc_mask       = 1 << AT91SAM9263_ID_ISI,
 142         .type           = CLK_TYPE_PERIPHERAL,
 143 };
 144 static struct clk lcdc_clk = {
 145         .name           = "lcdc_clk",
 146         .pmc_mask       = 1 << AT91SAM9263_ID_LCDC,
 147         .type           = CLK_TYPE_PERIPHERAL,
 148 };
 149 static struct clk ohci_clk = {
 150         .name           = "ohci_clk",
 151         .pmc_mask       = 1 << AT91SAM9263_ID_UHP,
 152         .type           = CLK_TYPE_PERIPHERAL,
 153 };
 154
 155 static struct clk *periph_clocks[] __initdata = {
 156         &pioA_clk,
 157         &pioB_clk,
 158         &pioCDE_clk,
 159         &usart0_clk,
 160         &usart1_clk,
 161         &usart2_clk,
 162         &mmc0_clk,
 163         &mmc1_clk,
 164         &can_clk,
 165         &twi_clk,
 166         &spi0_clk,
 167         &spi1_clk,
 168         &ssc0_clk,
 169         &ssc1_clk,
 170         &ac97_clk,
 171         &tcb_clk,
 172         &pwm_clk,
 173         &macb_clk,
 174         &twodge_clk,
 175         &udc_clk,
 176         &isi_clk,
 177         &lcdc_clk,
 178         &dma_clk,
 179         &ohci_clk,
 180         // irq0 .. irq1
 181 };
 182
 183 static struct clk_lookup periph_clocks_lookups[] = {
 184         /* One additional fake clock for macb_hclk */
 185         CLKDEV_CON_ID("hclk", &macb_clk),
 186         CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
 187         CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
 188         CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.0", &mmc0_clk),
 189         CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.1", &mmc1_clk),
 190         CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
 191         CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
 192         CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb_clk),
 193         /* fake hclk clock */
 194         CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk),
 195         CLKDEV_CON_ID("pioA", &pioA_clk),
 196         CLKDEV_CON_ID("pioB", &pioB_clk),
 197         CLKDEV_CON_ID("pioC", &pioCDE_clk),
 198         CLKDEV_CON_ID("pioD", &pioCDE_clk),
 199         CLKDEV_CON_ID("pioE", &pioCDE_clk),
 200 };
 201
 202 static struct clk_lookup usart_clocks_lookups[] = {
 203         CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
 204         CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
 205         CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
 206         CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
 207 };
 208
 209 /*
 210  * The four programmable clocks.
 211  * You must configure pin multiplexing to bring these signals out.
 212  */
 213 static struct clk pck0 = {
 214         .name           = "pck0",
 215         .pmc_mask       = AT91_PMC_PCK0,
 216         .type           = CLK_TYPE_PROGRAMMABLE,
 217         .id             = 0,
 218 };
 219 static struct clk pck1 = {
 220         .name           = "pck1",
 221         .pmc_mask       = AT91_PMC_PCK1,
 222         .type           = CLK_TYPE_PROGRAMMABLE,
 223         .id             = 1,
 224 };
 225 static struct clk pck2 = {
 226         .name           = "pck2",
 227         .pmc_mask       = AT91_PMC_PCK2,
 228         .type           = CLK_TYPE_PROGRAMMABLE,
 229         .id             = 2,
 230 };
 231 static struct clk pck3 = {
 232         .name           = "pck3",
 233         .pmc_mask       = AT91_PMC_PCK3,
 234         .type           = CLK_TYPE_PROGRAMMABLE,
 235         .id             = 3,
 236 };
 237
 238 static void __init at91sam9263_register_clocks(void)
 239 {
 240         int i;
 241
 242         for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
 243                 clk_register(periph_clocks[i]);
 244
 245         clkdev_add_table(periph_clocks_lookups,
 246                          ARRAY_SIZE(periph_clocks_lookups));
 247         clkdev_add_table(usart_clocks_lookups,
 248                          ARRAY_SIZE(usart_clocks_lookups));
 249
 250         clk_register(&pck0);
 251         clk_register(&pck1);
 252         clk_register(&pck2);
 253         clk_register(&pck3);
 254 }
 255
 256 static struct clk_lookup console_clock_lookup;
 257
 258 void __init at91sam9263_set_console_clock(int id)
 259 {
 260         if (id >= ARRAY_SIZE(usart_clocks_lookups))
 261                 return;
 262
 263         console_clock_lookup.con_id = "usart";
 264         console_clock_lookup.clk = usart_clocks_lookups[id].clk;
 265         clkdev_add(&console_clock_lookup);
 266 }
 267
 268 /* --------------------------------------------------------------------
 269  *  GPIO
 270  * -------------------------------------------------------------------- */
 271
 272 static struct at91_gpio_bank at91sam9263_gpio[] __initdata = {
 273         {
 274                 .id             = AT91SAM9263_ID_PIOA,
 275                 .regbase        = AT91SAM9263_BASE_PIOA,
 276         }, {
 277                 .id             = AT91SAM9263_ID_PIOB,
 278                 .regbase        = AT91SAM9263_BASE_PIOB,
 279         }, {
 280                 .id             = AT91SAM9263_ID_PIOCDE,
 281                 .regbase        = AT91SAM9263_BASE_PIOC,
 282         }, {
 283                 .id             = AT91SAM9263_ID_PIOCDE,
 284                 .regbase        = AT91SAM9263_BASE_PIOD,
 285         }, {
 286                 .id             = AT91SAM9263_ID_PIOCDE,
 287                 .regbase        = AT91SAM9263_BASE_PIOE,
 288         }
 289 };
 290
 291 /* --------------------------------------------------------------------
 292  *  AT91SAM9263 processor initialization
 293  * -------------------------------------------------------------------- */
 294
 295 static void __init at91sam9263_map_io(void)
 296 {
 297         at91_init_sram(0, AT91SAM9263_SRAM0_BASE, AT91SAM9263_SRAM0_SIZE);
 298         at91_init_sram(1, AT91SAM9263_SRAM1_BASE, AT91SAM9263_SRAM1_SIZE);
 299 }
 300
 301 static void __init at91sam9263_ioremap_registers(void)
 302 {
 303         at91_ioremap_shdwc(AT91SAM9263_BASE_SHDWC);
 304         at91sam926x_ioremap_pit(AT91SAM9263_BASE_PIT);
 305         at91sam9_ioremap_smc(0, AT91SAM9263_BASE_SMC0);
 306         at91sam9_ioremap_smc(1, AT91SAM9263_BASE_SMC1);
 307 }
 308
 309 static void __init at91sam9263_initialize(void)
 310 {
 311         arm_pm_restart = at91sam9_alt_restart;
 312         at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);
 313
 314         /* Register GPIO subsystem */
 315         at91_gpio_init(at91sam9263_gpio, 5);
 316 }
 317
 318 /* --------------------------------------------------------------------
 319  *  Interrupt initialization
 320  * -------------------------------------------------------------------- */
 321
 322 /*
 323  * The default interrupt priority levels (0 = lowest, 7 = highest).
 324  */
 325 static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
 326         7,      /* Advanced Interrupt Controller (FIQ) */
 327         7,      /* System Peripherals */
 328         1,      /* Parallel IO Controller A */
 329         1,      /* Parallel IO Controller B */
 330         1,      /* Parallel IO Controller C, D and E */
 331         0,
 332         0,
 333         5,      /* USART 0 */
 334         5,      /* USART 1 */
 335         5,      /* USART 2 */
 336         0,      /* Multimedia Card Interface 0 */
 337         0,      /* Multimedia Card Interface 1 */
 338         3,      /* CAN */
 339         6,      /* Two-Wire Interface */
 340         5,      /* Serial Peripheral Interface 0 */
 341         5,      /* Serial Peripheral Interface 1 */
 342         4,      /* Serial Synchronous Controller 0 */
 343         4,      /* Serial Synchronous Controller 1 */
 344         5,      /* AC97 Controller */
 345         0,      /* Timer Counter 0, 1 and 2 */
 346         0,      /* Pulse Width Modulation Controller */
 347         3,      /* Ethernet */
 348         0,
 349         0,      /* 2D Graphic Engine */
 350         2,      /* USB Device Port */
 351         0,      /* Image Sensor Interface */
 352         3,      /* LDC Controller */
 353         0,      /* DMA Controller */
 354         0,
 355         2,      /* USB Host port */
 356         0,      /* Advanced Interrupt Controller (IRQ0) */
 357         0,      /* Advanced Interrupt Controller (IRQ1) */
 358 };
 359
 360 struct at91_init_soc __initdata at91sam9263_soc = {
 361         .map_io = at91sam9263_map_io,
 362         .default_irq_priority = at91sam9263_default_irq_priority,
 363         .ioremap_registers = at91sam9263_ioremap_registers,
 364         .register_clocks = at91sam9263_register_clocks,
 365         .init = at91sam9263_initialize,
 366 };