/* * arch/arm/mach-at91/at91sam9rl.c * * Copyright (C) 2005 SAN People * Copyright (C) 2007 Atmel Corporation * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. */ #include #include #include #include #include #include #include #include #include #include #include "soc.h" #include "generic.h" #include "clock.h" static struct map_desc at91sam9rl_sram_desc[] __initdata = { { .pfn = __phys_to_pfn(AT91SAM9RL_SRAM_BASE), .type = MT_DEVICE, } }; /* -------------------------------------------------------------------- * Clocks * -------------------------------------------------------------------- */ /* * The peripheral clocks. */ static struct clk pioA_clk = { .name = "pioA_clk", .pmc_mask = 1 << AT91SAM9RL_ID_PIOA, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pioB_clk = { .name = "pioB_clk", .pmc_mask = 1 << AT91SAM9RL_ID_PIOB, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pioC_clk = { .name = "pioC_clk", .pmc_mask = 1 << AT91SAM9RL_ID_PIOC, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pioD_clk = { .name = "pioD_clk", .pmc_mask = 1 << AT91SAM9RL_ID_PIOD, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart0_clk = { .name = "usart0_clk", .pmc_mask = 1 << AT91SAM9RL_ID_US0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart1_clk = { .name = "usart1_clk", .pmc_mask = 1 << AT91SAM9RL_ID_US1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart2_clk = { .name = "usart2_clk", .pmc_mask = 1 << AT91SAM9RL_ID_US2, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart3_clk = { .name = "usart3_clk", .pmc_mask = 1 << AT91SAM9RL_ID_US3, .type = CLK_TYPE_PERIPHERAL, }; static struct clk mmc_clk = { .name = "mci_clk", .pmc_mask = 1 << AT91SAM9RL_ID_MCI, .type = CLK_TYPE_PERIPHERAL, }; static struct clk twi0_clk = { .name = "twi0_clk", .pmc_mask = 1 << AT91SAM9RL_ID_TWI0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk twi1_clk = { .name = "twi1_clk", .pmc_mask = 1 << AT91SAM9RL_ID_TWI1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk spi_clk = { .name = "spi_clk", .pmc_mask = 1 << AT91SAM9RL_ID_SPI, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ssc0_clk = { .name = "ssc0_clk", .pmc_mask = 1 << AT91SAM9RL_ID_SSC0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ssc1_clk = { .name = "ssc1_clk", .pmc_mask = 1 << AT91SAM9RL_ID_SSC1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tc0_clk = { .name = "tc0_clk", .pmc_mask = 1 << AT91SAM9RL_ID_TC0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tc1_clk = { .name = "tc1_clk", .pmc_mask = 1 << AT91SAM9RL_ID_TC1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tc2_clk = { .name = "tc2_clk", .pmc_mask = 1 << AT91SAM9RL_ID_TC2, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pwm_clk = { .name = "pwm_clk", .pmc_mask = 1 << AT91SAM9RL_ID_PWMC, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tsc_clk = { .name = "tsc_clk", .pmc_mask = 1 << AT91SAM9RL_ID_TSC, .type = CLK_TYPE_PERIPHERAL, }; static struct clk dma_clk = { .name = "dma_clk", .pmc_mask = 1 << AT91SAM9RL_ID_DMA, .type = CLK_TYPE_PERIPHERAL, }; static struct clk udphs_clk = { .name = "udphs_clk", .pmc_mask = 1 << AT91SAM9RL_ID_UDPHS, .type = CLK_TYPE_PERIPHERAL, }; static struct clk lcdc_clk = { .name = "lcdc_clk", .pmc_mask = 1 << AT91SAM9RL_ID_LCDC, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ac97_clk = { .name = "ac97_clk", .pmc_mask = 1 << AT91SAM9RL_ID_AC97C, .type = CLK_TYPE_PERIPHERAL, }; static struct clk *periph_clocks[] __initdata = { &pioA_clk, &pioB_clk, &pioC_clk, &pioD_clk, &usart0_clk, &usart1_clk, &usart2_clk, &usart3_clk, &mmc_clk, &twi0_clk, &twi1_clk, &spi_clk, &ssc0_clk, &ssc1_clk, &tc0_clk, &tc1_clk, &tc2_clk, &pwm_clk, &tsc_clk, &dma_clk, &udphs_clk, &lcdc_clk, &ac97_clk, // irq0 }; static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("hclk", "atmel_usba_udc", &utmi_clk), CLKDEV_CON_DEV_ID("pclk", "atmel_usba_udc", &udphs_clk), CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk), CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk), CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_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 at91sam9rl_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)); clk_register(&pck0); clk_register(&pck1); } static struct clk_lookup console_clock_lookup; void __init at91sam9rl_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 at91sam9rl_gpio[] = { { .id = AT91SAM9RL_ID_PIOA, .offset = AT91_PIOA, .clock = &pioA_clk, }, { .id = AT91SAM9RL_ID_PIOB, .offset = AT91_PIOB, .clock = &pioB_clk, }, { .id = AT91SAM9RL_ID_PIOC, .offset = AT91_PIOC, .clock = &pioC_clk, }, { .id = AT91SAM9RL_ID_PIOD, .offset = AT91_PIOD, .clock = &pioD_clk, } }; static void at91sam9rl_poweroff(void) { at91_sys_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW); } /* -------------------------------------------------------------------- * AT91SAM9RL processor initialization * -------------------------------------------------------------------- */ static void __init at91sam9rl_map_io(void) { unsigned long cidr, sram_size; cidr = at91_sys_read(AT91_DBGU_CIDR); switch (cidr & AT91_CIDR_SRAMSIZ) { case AT91_CIDR_SRAMSIZ_32K: sram_size = 2 * SZ_16K; break; case AT91_CIDR_SRAMSIZ_16K: default: sram_size = SZ_16K; } at91sam9rl_sram_desc->virtual = AT91_IO_VIRT_BASE - sram_size; at91sam9rl_sram_desc->length = sram_size; /* Map SRAM */ iotable_init(at91sam9rl_sram_desc, ARRAY_SIZE(at91sam9rl_sram_desc)); } static void __init at91sam9rl_initialize(unsigned long main_clock) { at91_arch_reset = at91sam9_alt_reset; pm_power_off = at91sam9rl_poweroff; at91_extern_irq = (1 << AT91SAM9RL_ID_IRQ0); /* Init clock subsystem */ at91_clock_init(main_clock); /* Register the processor-specific clocks */ at91sam9rl_register_clocks(); /* Register GPIO subsystem */ at91_gpio_init(at91sam9rl_gpio, 4); } /* -------------------------------------------------------------------- * Interrupt initialization * -------------------------------------------------------------------- */ /* * The default interrupt priority levels (0 = lowest, 7 = highest). */ static unsigned int at91sam9rl_default_irq_priority[NR_AIC_IRQS] __initdata = { 7, /* Advanced Interrupt Controller */ 7, /* System Peripherals */ 1, /* Parallel IO Controller A */ 1, /* Parallel IO Controller B */ 1, /* Parallel IO Controller C */ 1, /* Parallel IO Controller D */ 5, /* USART 0 */ 5, /* USART 1 */ 5, /* USART 2 */ 5, /* USART 3 */ 0, /* Multimedia Card Interface */ 6, /* Two-Wire Interface 0 */ 6, /* Two-Wire Interface 1 */ 5, /* Serial Peripheral Interface */ 4, /* Serial Synchronous Controller 0 */ 4, /* Serial Synchronous Controller 1 */ 0, /* Timer Counter 0 */ 0, /* Timer Counter 1 */ 0, /* Timer Counter 2 */ 0, 0, /* Touch Screen Controller */ 0, /* DMA Controller */ 2, /* USB Device High speed port */ 2, /* LCD Controller */ 6, /* AC97 Controller */ 0, 0, 0, 0, 0, 0, 0, /* Advanced Interrupt Controller */ }; void __init at91sam9rl_init_interrupts(unsigned int priority[NR_AIC_IRQS]) { if (!priority) priority = at91sam9rl_default_irq_priority; /* Initialize the AIC interrupt controller */ at91_aic_init(priority); /* Enable GPIO interrupts */ at91_gpio_irq_setup(); } struct at91_soc __initdata at91sam9rl_soc = { .map_io = at91sam9rl_map_io, .init = at91sam9rl_initialize, };