/*
* Chip-specific setup code for the AT91SAM9G45 family
*
* Copyright (C) 2009 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/at91sam9g45.h>
#include <mach/at91_pmc.h>
#include <mach/at91_rstc.h>
#include <mach/at91_shdwc.h>
#include <mach/cpu.h>
#include "generic.h"
#include "clock.h"
static struct map_desc at91sam9g45_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 - AT91SAM9G45_SRAM_SIZE,
.pfn = __phys_to_pfn(AT91SAM9G45_SRAM_BASE),
.length = AT91SAM9G45_SRAM_SIZE,
.type = MT_DEVICE,
}
};
/* --------------------------------------------------------------------
* Clocks
* -------------------------------------------------------------------- */
/*
* The peripheral clocks.
*/
static struct clk pioA_clk = {
.name = "pioA_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_PIOA,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pioB_clk = {
.name = "pioB_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_PIOB,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pioC_clk = {
.name = "pioC_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_PIOC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pioDE_clk = {
.name = "pioDE_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_PIODE,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart0_clk = {
.name = "usart0_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_US0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart1_clk = {
.name = "usart1_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_US1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart2_clk = {
.name = "usart2_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_US2,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk usart3_clk = {
.name = "usart3_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_US3,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc0_clk = {
.name = "mci0_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_MCI0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk twi0_clk = {
.name = "twi0_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_TWI0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk twi1_clk = {
.name = "twi1_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_TWI1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi0_clk = {
.name = "spi0_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_SPI0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk spi1_clk = {
.name = "spi1_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_SPI1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc0_clk = {
.name = "ssc0_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_SSC0,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ssc1_clk = {
.name = "ssc1_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_SSC1,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tcb0_clk = {
.name = "tcb0_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_TCB,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk pwm_clk = {
.name = "pwm_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_PWMC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk tsc_clk = {
.name = "tsc_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_TSC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk dma_clk = {
.name = "dma_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_DMA,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk uhphs_clk = {
.name = "uhphs_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_UHPHS,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk lcdc_clk = {
.name = "lcdc_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_LCDC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk ac97_clk = {
.name = "ac97_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_AC97C,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk macb_clk = {
.name = "macb_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_EMAC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk isi_clk = {
.name = "isi_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_ISI,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk udphs_clk = {
.name = "udphs_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_UDPHS,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk mmc1_clk = {
.name = "mci1_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_MCI1,
.type = CLK_TYPE_PERIPHERAL,
};
/* Video decoder clock - Only for sam9m10/sam9m11 */
static struct clk vdec_clk = {
.name = "vdec_clk",
.pmc_mask = 1 << AT91SAM9G45_ID_VDEC,
.type = CLK_TYPE_PERIPHERAL,
};
static struct clk *periph_clocks[] __initdata = {
&pioA_clk,
&pioB_clk,
&pioC_clk,
&pioDE_clk,
&usart0_clk,
&usart1_clk,
&usart2_clk,
&usart3_clk,
&mmc0_clk,
&twi0_clk,
&twi1_clk,
&spi0_clk,
&spi1_clk,
&ssc0_clk,
&ssc1_clk,
&tcb0_clk,
&pwm_clk,
&tsc_clk,
&dma_clk,
&uhphs_clk,
&lcdc_clk,
&ac97_clk,
&macb_clk,
&isi_clk,
&udphs_clk,
&mmc1_clk,
// irq0
};
static struct clk_lookup periph_clocks_lookups[] = {
/* One additional fake clock for ohci */
CLKDEV_CON_ID("ohci_clk", &uhphs_clk),
CLKDEV_CON_DEV_ID("ehci_clk", "atmel-ehci.0", &uhphs_clk),
CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc.0", &utmi_clk),
CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc.0", &udphs_clk),
CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.0", &mmc0_clk),
CLKDEV_CON_DEV_ID("mci_clk", "at91_mci.1", &mmc1_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk),
CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.1", &spi1_clk),
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tcb0_clk),
CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk),
CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk),
};
static struct clk_lookup usart_clocks_lookups[] = {
CLKDEV_CON_DEV_ID("usart", "atmel_usart.0", &mck),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.1", &usart0_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.2", &usart1_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.3", &usart2_clk),
CLKDEV_CON_DEV_ID("usart", "atmel_usart.4", &usart3_clk),
};
/*
* The two 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 void __init at91sam9g45_register_clocks(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
clk_register(periph_clocks[i]);
clkdev_add_table(periph_clocks_lookups,
ARRAY_SIZE(periph_clocks_lookups));
clkdev_add_table(usart_clocks_lookups,
ARRAY_SIZE(usart_clocks_lookups));
if (cpu_is_at91sam9m10() || cpu_is_at91sam9m11())
clk_register(&vdec_clk);
clk_register(&pck0);
clk_register(&pck1);
}
static struct clk_lookup console_clock_lookup;
void __init at91sam9g45_set_console_clock(int id)
{
if (id >= ARRAY_SIZE(usart_clocks_lookups))
return;
console_clock_lookup.con_id = "usart";
console_clock_lookup.clk = usart_clocks_lookups[id].clk;
clkdev_add(&console_clock_lookup);
}
/* --------------------------------------------------------------------
* GPIO
* -------------------------------------------------------------------- */
static struct at91_gpio_bank at91sam9g45_gpio[] = {
{
.id = AT91SAM9G45_ID_PIOA,
.offset = AT91_PIOA,
.clock = &pioA_clk,
}, {
.id = AT91SAM9G45_ID_PIOB,
.offset = AT91_PIOB,
.clock = &pioB_clk,
}, {
.id = AT91SAM9G45_ID_PIOC,
.offset = AT91_PIOC,
.clock = &pioC_clk,
}, {
.id = AT91SAM9G45_ID_PIODE,
.offset = AT91_PIOD,
.clock = &pioDE_clk,
}, {
.id = AT91SAM9G45_ID_PIODE,
.offset = AT91_PIOE,
.clock = &pioDE_clk,
}
};
static void at91sam9g45_reset(void)
{
at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST);
}
static void at91sam9g45_poweroff(void)
{
at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
}
/* --------------------------------------------------------------------
* AT91SAM9G45 processor initialization
* -------------------------------------------------------------------- */
void __init at91sam9g45_map_io(void)
{
/* Map peripherals */
iotable_init(at91sam9g45_io_desc, ARRAY_SIZE(at91sam9g45_io_desc));
}
void __init at91sam9g45_initialize(unsigned long main_clock)
{
at91_arch_reset = at91sam9g45_reset;
pm_power_off = at91sam9g45_poweroff;
at91_extern_irq = (1 << AT91SAM9G45_ID_IRQ0);
/* Init clock subsystem */
at91_clock_init(main_clock);
/* Register the processor-specific clocks */
at91sam9g45_register_clocks();
/* Register GPIO subsystem */
at91_gpio_init(at91sam9g45_gpio, 5);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
/*
* The default interrupt priority levels (0 = lowest, 7 = highest).
*/
static unsigned int at91sam9g45_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 */
1, /* Parallel IO Controller D and E */
0,
5, /* USART 0 */
5, /* USART 1 */
5, /* USART 2 */
5, /* USART 3 */
0, /* Multimedia Card Interface 0 */
6, /* Two-Wire Interface 0 */
6, /* Two-Wire Interface 1 */
5, /* Serial Peripheral Interface 0 */
5, /* Serial Peripheral Interface 1 */
4, /* Serial Synchronous Controller 0 */
4, /* Serial Synchronous Controller 1 */
0, /* Timer Counter 0, 1, 2, 3, 4 and 5 */
0, /* Pulse Width Modulation Controller */
0, /* Touch Screen Controller */
0, /* DMA Controller */
2, /* USB Host High Speed port */
3, /* LDC Controller */
5, /* AC97 Controller */
3, /* Ethernet */
0, /* Image Sensor Interface */
2, /* USB Device High speed port */
0,
0, /* Multimedia Card Interface 1 */
0,
0, /* Advanced Interrupt Controller (IRQ0) */
};
void __init at91sam9g45_init_interrupts(unsigned int priority[NR_AIC_IRQS])
{
if (!priority)
priority = at91sam9g45_default_irq_priority;
/* Initialize the AIC interrupt controller */
at91_aic_init(priority);
/* Enable GPIO interrupts */
at91_gpio_irq_setup();
}
