/* * 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/irq.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <mach/at91sam9263.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 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 pwm_clk = { .name = "pwm_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, &pwm_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(); }