Linux-2.6.33.2/arch/arm/mach-at91/at91cap9.c
/*
* arch/arm/mach-at91/at91cap9.c
*
* Copyright (C) 2007 Stelian Pop <stelian.pop@leadtechdesign.com>
* Copyright (C) 2007 Lead Tech Design <www.leadtechdesign.com>
* 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/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/cpu.h>
#include <mach/at91cap9.h>
#include <mach/at91_pmc.h>
#include <mach/at91_rstc.h>
#include <mach/at91_shdwc.h>
#include "generic.h"
#include "clock.h"
static struct map_desc at91cap9_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 - AT91CAP9_SRAM_SIZE,
.pfn = __phys_to_pfn(AT91CAP9_SRAM_BASE),
.length = AT91CAP9_SRAM_SIZE,
.type = MT_DEVICE,
},
};
/* --------------------------------------------------------------------
* Clocks
* -------------------------------------------------------------------- */
/*
* The peripheral clocks.
*/
static struct clk pioABCD_clk = {
.name = "pioABCD_clk",
.pmc_mask = 1 << AT91CAP9_ID_PIOABCD,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mpb0_clk = {
.name = "mpb0_clk",
.pmc_mask = 1 << AT91CAP9_ID_MPB0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mpb1_clk = {
.name = "mpb1_clk",
.pmc_mask = 1 << AT91CAP9_ID_MPB1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mpb2_clk = {
.name = "mpb2_clk",
.pmc_mask = 1 << AT91CAP9_ID_MPB2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mpb3_clk = {
.name = "mpb3_clk",
.pmc_mask = 1 << AT91CAP9_ID_MPB3,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mpb4_clk = {
.name = "mpb4_clk",
.pmc_mask = 1 << AT91CAP9_ID_MPB4,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart0_clk = {
.name = "usart0_clk",
.pmc_mask = 1 << AT91CAP9_ID_US0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart1_clk = {
.name = "usart1_clk",
.pmc_mask = 1 << AT91CAP9_ID_US1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart2_clk = {
.name = "usart2_clk",
.pmc_mask = 1 << AT91CAP9_ID_US2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc0_clk = {
.name = "mci0_clk",
.pmc_mask = 1 << AT91CAP9_ID_MCI0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc1_clk = {
.name = "mci1_clk",
.pmc_mask = 1 << AT91CAP9_ID_MCI1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk can_clk = {
.name = "can_clk",
.pmc_mask = 1 << AT91CAP9_ID_CAN,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk twi_clk = {
.name = "twi_clk",
.pmc_mask = 1 << AT91CAP9_ID_TWI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi0_clk = {
.name = "spi0_clk",
.pmc_mask = 1 << AT91CAP9_ID_SPI0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi1_clk = {
.name = "spi1_clk",
.pmc_mask = 1 << AT91CAP9_ID_SPI1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc0_clk = {
.name = "ssc0_clk",
.pmc_mask = 1 << AT91CAP9_ID_SSC0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc1_clk = {
.name = "ssc1_clk",
.pmc_mask = 1 << AT91CAP9_ID_SSC1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ac97_clk = {
.name = "ac97_clk",
.pmc_mask = 1 << AT91CAP9_ID_AC97C,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tcb_clk = {
.name = "tcb_clk",
.pmc_mask = 1 << AT91CAP9_ID_TCB,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pwm_clk = {
.name = "pwm_clk",
.pmc_mask = 1 << AT91CAP9_ID_PWMC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk macb_clk = {
.name = "macb_clk",
.pmc_mask = 1 << AT91CAP9_ID_EMAC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk aestdes_clk = {
.name = "aestdes_clk",
.pmc_mask = 1 << AT91CAP9_ID_AESTDES,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk adc_clk = {
.name = "adc_clk",
.pmc_mask = 1 << AT91CAP9_ID_ADC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk isi_clk = {
.name = "isi_clk",
.pmc_mask = 1 << AT91CAP9_ID_ISI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk lcdc_clk = {
.name = "lcdc_clk",
.pmc_mask = 1 << AT91CAP9_ID_LCDC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk dma_clk = {
.name = "dma_clk",
.pmc_mask = 1 << AT91CAP9_ID_DMA,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk udphs_clk = {
.name = "udphs_clk",
.pmc_mask = 1 << AT91CAP9_ID_UDPHS,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ohci_clk = {
.name = "ohci_clk",
.pmc_mask = 1 << AT91CAP9_ID_UHP,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk *periph_clocks[] __initdata = {
&pioABCD_clk,
&mpb0_clk,
&mpb1_clk,
&mpb2_clk,
&mpb3_clk,
&mpb4_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,
&pwm_clk,
&macb_clk,
&aestdes_clk,
&adc_clk,
&isi_clk,
&lcdc_clk,
&dma_clk,
&udphs_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 at91cap9_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 at91cap9_gpio[] = {
{
.id = AT91CAP9_ID_PIOABCD,
.offset = AT91_PIOA,
.clock = &pioABCD_clk,
}, {
.id = AT91CAP9_ID_PIOABCD,
.offset = AT91_PIOB,
.clock = &pioABCD_clk,
}, {
.id = AT91CAP9_ID_PIOABCD,
.offset = AT91_PIOC,
.clock = &pioABCD_clk,
}, {
.id = AT91CAP9_ID_PIOABCD,
.offset = AT91_PIOD,
.clock = &pioABCD_clk,
}
};
static void at91cap9_reset(void)
{
at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
}
static void at91cap9_poweroff(void)
{
at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
}
/* --------------------------------------------------------------------
* AT91CAP9 processor initialization
* -------------------------------------------------------------------- */
void __init at91cap9_initialize(unsigned long main_clock)
{
/* Map peripherals */
iotable_init(at91cap9_io_desc, ARRAY_SIZE(at91cap9_io_desc));
at91_arch_reset = at91cap9_reset;
pm_power_off = at91cap9_poweroff;
at91_extern_irq = (1 << AT91CAP9_ID_IRQ0) | (1 << AT91CAP9_ID_IRQ1);
/* Init clock subsystem */
at91_clock_init(main_clock);
/* Register the processor-specific clocks */
at91cap9_register_clocks();
/* Register GPIO subsystem */
at91_gpio_init(at91cap9_gpio, 4);
/* Remember the silicon revision */
if (cpu_is_at91cap9_revB())
system_rev = 0xB;
else if (cpu_is_at91cap9_revC())
system_rev = 0xC;
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
/*
* The default interrupt priority levels (0 = lowest, 7 = highest).
*/
static unsigned int at91cap9_default_irq_priority[NR_AIC_IRQS] __initdata = {
7, /* Advanced Interrupt Controller (FIQ) */
7, /* System Peripherals */
1, /* Parallel IO Controller A, B, C and D */
0, /* MP Block Peripheral 0 */
0, /* MP Block Peripheral 1 */
0, /* MP Block Peripheral 2 */
0, /* MP Block Peripheral 3 */
0, /* MP Block Peripheral 4 */
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, /* Advanced Encryption Standard, Triple DES*/
0, /* Analog-to-Digital Converter */
0, /* Image Sensor Interface */
3, /* LCD Controller */
0, /* DMA Controller */
2, /* USB Device Port */
2, /* USB Host port */
0, /* Advanced Interrupt Controller (IRQ0) */
0, /* Advanced Interrupt Controller (IRQ1) */
};
void __init at91cap9_init_interrupts(unsigned int priority[NR_AIC_IRQS])
{
if (!priority)
priority = at91cap9_default_irq_priority;
/* Initialize the AIC interrupt controller */
at91_aic_init(priority);
/* Enable GPIO interrupts */
at91_gpio_irq_setup();
}