Logo Search packages:      
Sourcecode: linux-2.6 version File versions  Download package

at91sam9263.c

/*
 * arch/arm/mach-at91/at91sam9263.c
 *
 *  Copyright (C) 2007 Atmel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/pm.h>

#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/arch/at91sam9263.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/at91_rstc.h>
#include <asm/arch/at91_shdwc.h>

#include "generic.h"
#include "clock.h"

static struct map_desc at91sam9263_io_desc[] __initdata = {
      {
            .virtual    = AT91_VA_BASE_SYS,
            .pfn        = __phys_to_pfn(AT91_BASE_SYS),
            .length           = SZ_16K,
            .type       = MT_DEVICE,
      }, {
            .virtual    = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE,
            .pfn        = __phys_to_pfn(AT91SAM9263_SRAM0_BASE),
            .length           = AT91SAM9263_SRAM0_SIZE,
            .type       = MT_DEVICE,
      }, {
            .virtual    = AT91_IO_VIRT_BASE - AT91SAM9263_SRAM0_SIZE - AT91SAM9263_SRAM1_SIZE,
            .pfn        = __phys_to_pfn(AT91SAM9263_SRAM1_BASE),
            .length           = AT91SAM9263_SRAM1_SIZE,
            .type       = MT_DEVICE,
      },
};

/* --------------------------------------------------------------------
 *  Clocks
 * -------------------------------------------------------------------- */

/*
 * The peripheral clocks.
 */
static struct clk pioA_clk = {
      .name       = "pioA_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_PIOA,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk pioB_clk = {
      .name       = "pioB_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_PIOB,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk pioCDE_clk = {
      .name       = "pioCDE_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_PIOCDE,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk usart0_clk = {
      .name       = "usart0_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_US0,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk usart1_clk = {
      .name       = "usart1_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_US1,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk usart2_clk = {
      .name       = "usart2_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_US2,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc0_clk = {
      .name       = "mci0_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_MCI0,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc1_clk = {
      .name       = "mci1_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_MCI1,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk can_clk = {
      .name       = "can_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_CAN,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk twi_clk = {
      .name       = "twi_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_TWI,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk spi0_clk = {
      .name       = "spi0_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_SPI0,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk spi1_clk = {
      .name       = "spi1_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_SPI1,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc0_clk = {
      .name       = "ssc0_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_SSC0,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc1_clk = {
      .name       = "ssc1_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_SSC1,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk ac97_clk = {
      .name       = "ac97_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_AC97C,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk tcb_clk = {
      .name       = "tcb_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_TCB,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk pwmc_clk = {
      .name       = "pwmc_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_PWMC,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk macb_clk = {
      .name       = "macb_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_EMAC,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk dma_clk = {
      .name       = "dma_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_DMA,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk twodge_clk = {
      .name       = "2dge_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_2DGE,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk udc_clk = {
      .name       = "udc_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_UDP,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk isi_clk = {
      .name       = "isi_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_ISI,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk lcdc_clk = {
      .name       = "lcdc_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_LCDC,
      .type       = CLK_TYPE_PERIPHERAL,
};
static struct clk ohci_clk = {
      .name       = "ohci_clk",
      .pmc_mask   = 1 << AT91SAM9263_ID_UHP,
      .type       = CLK_TYPE_PERIPHERAL,
};

static struct clk *periph_clocks[] __initdata = {
      &pioA_clk,
      &pioB_clk,
      &pioCDE_clk,
      &usart0_clk,
      &usart1_clk,
      &usart2_clk,
      &mmc0_clk,
      &mmc1_clk,
      &can_clk,
      &twi_clk,
      &spi0_clk,
      &spi1_clk,
      &ssc0_clk,
      &ssc1_clk,
      &ac97_clk,
      &tcb_clk,
      &pwmc_clk,
      &macb_clk,
      &twodge_clk,
      &udc_clk,
      &isi_clk,
      &lcdc_clk,
      &dma_clk,
      &ohci_clk,
      // irq0 .. irq1
};

/*
 * The four programmable clocks.
 * You must configure pin multiplexing to bring these signals out.
 */
static struct clk pck0 = {
      .name       = "pck0",
      .pmc_mask   = AT91_PMC_PCK0,
      .type       = CLK_TYPE_PROGRAMMABLE,
      .id         = 0,
};
static struct clk pck1 = {
      .name       = "pck1",
      .pmc_mask   = AT91_PMC_PCK1,
      .type       = CLK_TYPE_PROGRAMMABLE,
      .id         = 1,
};
static struct clk pck2 = {
      .name       = "pck2",
      .pmc_mask   = AT91_PMC_PCK2,
      .type       = CLK_TYPE_PROGRAMMABLE,
      .id         = 2,
};
static struct clk pck3 = {
      .name       = "pck3",
      .pmc_mask   = AT91_PMC_PCK3,
      .type       = CLK_TYPE_PROGRAMMABLE,
      .id         = 3,
};

static void __init at91sam9263_register_clocks(void)
{
      int i;

      for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
            clk_register(periph_clocks[i]);

      clk_register(&pck0);
      clk_register(&pck1);
      clk_register(&pck2);
      clk_register(&pck3);
}

/* --------------------------------------------------------------------
 *  GPIO
 * -------------------------------------------------------------------- */

static struct at91_gpio_bank at91sam9263_gpio[] = {
      {
            .id         = AT91SAM9263_ID_PIOA,
            .offset           = AT91_PIOA,
            .clock            = &pioA_clk,
      }, {
            .id         = AT91SAM9263_ID_PIOB,
            .offset           = AT91_PIOB,
            .clock            = &pioB_clk,
      }, {
            .id         = AT91SAM9263_ID_PIOCDE,
            .offset           = AT91_PIOC,
            .clock            = &pioCDE_clk,
      }, {
            .id         = AT91SAM9263_ID_PIOCDE,
            .offset           = AT91_PIOD,
            .clock            = &pioCDE_clk,
      }, {
            .id         = AT91SAM9263_ID_PIOCDE,
            .offset           = AT91_PIOE,
            .clock            = &pioCDE_clk,
      }
};

static void at91sam9263_reset(void)
{
      at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
}

static void at91sam9263_poweroff(void)
{
      at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
}


/* --------------------------------------------------------------------
 *  AT91SAM9263 processor initialization
 * -------------------------------------------------------------------- */

void __init at91sam9263_initialize(unsigned long main_clock)
{
      /* Map peripherals */
      iotable_init(at91sam9263_io_desc, ARRAY_SIZE(at91sam9263_io_desc));

      at91_arch_reset = at91sam9263_reset;
      pm_power_off = at91sam9263_poweroff;
      at91_extern_irq = (1 << AT91SAM9263_ID_IRQ0) | (1 << AT91SAM9263_ID_IRQ1);

      /* Init clock subsystem */
      at91_clock_init(main_clock);

      /* Register the processor-specific clocks */
      at91sam9263_register_clocks();

      /* Register GPIO subsystem */
      at91_gpio_init(at91sam9263_gpio, 5);
}

/* --------------------------------------------------------------------
 *  Interrupt initialization
 * -------------------------------------------------------------------- */

/*
 * The default interrupt priority levels (0 = lowest, 7 = highest).
 */
static unsigned int at91sam9263_default_irq_priority[NR_AIC_IRQS] __initdata = {
      7,    /* Advanced Interrupt Controller (FIQ) */
      7,    /* System Peripherals */
      1,    /* Parallel IO Controller A */
      1,    /* Parallel IO Controller B */
      1,    /* Parallel IO Controller C, D and E */
      0,
      0,
      5,    /* USART 0 */
      5,    /* USART 1 */
      5,    /* USART 2 */
      0,    /* Multimedia Card Interface 0 */
      0,    /* Multimedia Card Interface 1 */
      3,    /* CAN */
      6,    /* Two-Wire Interface */
      5,    /* Serial Peripheral Interface 0 */
      5,    /* Serial Peripheral Interface 1 */
      4,    /* Serial Synchronous Controller 0 */
      4,    /* Serial Synchronous Controller 1 */
      5,    /* AC97 Controller */
      0,    /* Timer Counter 0, 1 and 2 */
      0,    /* Pulse Width Modulation Controller */
      3,    /* Ethernet */
      0,
      0,    /* 2D Graphic Engine */
      2,    /* USB Device Port */
      0,    /* Image Sensor Interface */
      3,    /* LDC Controller */
      0,    /* DMA Controller */
      0,
      2,    /* USB Host port */
      0,    /* Advanced Interrupt Controller (IRQ0) */
      0,    /* Advanced Interrupt Controller (IRQ1) */
};

void __init at91sam9263_init_interrupts(unsigned int priority[NR_AIC_IRQS])
{
      if (!priority)
            priority = at91sam9263_default_irq_priority;

      /* Initialize the AIC interrupt controller */
      at91_aic_init(priority);

      /* Enable GPIO interrupts */
      at91_gpio_irq_setup();
}

Generated by  Doxygen 1.6.0   Back to index