/* * 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 #include #include "at91_aic.h" #include "soc.h" #include "generic.h" #include "sam9_smc.h" #include "pm.h" /* -------------------------------------------------------------------- * Clocks * -------------------------------------------------------------------- */ #if defined(CONFIG_OLD_CLK_AT91) #include "clock.h" /* * 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 adc_op_clk = { .name = "adc_op_clk", .type = CLK_TYPE_PERIPHERAL, .rate_hz = 1000000, }; 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, &adc_op_clk, // irq0 }; static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("hclk", "at91sam9rl-lcdfb.0", &lcdc_clk), 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", "at91rm9200_ssc.0", &ssc0_clk), CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk), CLKDEV_CON_DEV_ID("pclk", "fffc0000.ssc", &ssc0_clk), CLKDEV_CON_DEV_ID("pclk", "fffc4000.ssc", &ssc1_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi0_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.1", &twi1_clk), CLKDEV_CON_DEV_ID(NULL, "at91sam9rl-pwm", &pwm_clk), CLKDEV_CON_ID("pioA", &pioA_clk), CLKDEV_CON_ID("pioB", &pioB_clk), CLKDEV_CON_ID("pioC", &pioC_clk), CLKDEV_CON_ID("pioD", &pioD_clk), /* more lookup table for DT entries */ CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck), CLKDEV_CON_DEV_ID("usart", "fffb0000.serial", &usart0_clk), CLKDEV_CON_DEV_ID("usart", "ffffb400.serial", &usart1_clk), CLKDEV_CON_DEV_ID("usart", "ffffb800.serial", &usart2_clk), CLKDEV_CON_DEV_ID("usart", "ffffbc00.serial", &usart3_clk), CLKDEV_CON_DEV_ID("t0_clk", "fffa0000.timer", &tc0_clk), CLKDEV_CON_DEV_ID("t1_clk", "fffa0000.timer", &tc1_clk), CLKDEV_CON_DEV_ID("t2_clk", "fffa0000.timer", &tc2_clk), CLKDEV_CON_DEV_ID("mci_clk", "fffa4000.mmc", &mmc_clk), CLKDEV_CON_DEV_ID(NULL, "fffa8000.i2c", &twi0_clk), CLKDEV_CON_DEV_ID(NULL, "fffac000.i2c", &twi1_clk), CLKDEV_CON_DEV_ID(NULL, "fffc8000.pwm", &pwm_clk), CLKDEV_CON_DEV_ID(NULL, "ffffc800.pwm", &pwm_clk), CLKDEV_CON_DEV_ID(NULL, "fffff400.gpio", &pioA_clk), CLKDEV_CON_DEV_ID(NULL, "fffff600.gpio", &pioB_clk), CLKDEV_CON_DEV_ID(NULL, "fffff800.gpio", &pioC_clk), CLKDEV_CON_DEV_ID(NULL, "fffffa00.gpio", &pioD_clk), CLKDEV_CON_ID("adc_clk", &tsc_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); } #endif /* -------------------------------------------------------------------- * GPIO * -------------------------------------------------------------------- */ static struct at91_gpio_bank at91sam9rl_gpio[] __initdata = { { .id = AT91SAM9RL_ID_PIOA, .regbase = AT91SAM9RL_BASE_PIOA, }, { .id = AT91SAM9RL_ID_PIOB, .regbase = AT91SAM9RL_BASE_PIOB, }, { .id = AT91SAM9RL_ID_PIOC, .regbase = AT91SAM9RL_BASE_PIOC, }, { .id = AT91SAM9RL_ID_PIOD, .regbase = AT91SAM9RL_BASE_PIOD, } }; /* -------------------------------------------------------------------- * AT91SAM9RL processor initialization * -------------------------------------------------------------------- */ static void __init at91sam9rl_map_io(void) { unsigned long sram_size; switch (at91_soc_initdata.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; } /* Map SRAM */ at91_init_sram(0, AT91SAM9RL_SRAM_BASE, sram_size); } static void __init at91sam9rl_ioremap_registers(void) { at91_ioremap_ramc(0, AT91SAM9RL_BASE_SDRAMC, 512); at91sam926x_ioremap_pit(AT91SAM9RL_BASE_PIT); at91sam9_ioremap_smc(0, AT91SAM9RL_BASE_SMC); at91_ioremap_matrix(AT91SAM9RL_BASE_MATRIX); at91_pm_set_standby(at91sam9_sdram_standby); } static void __init at91sam9rl_initialize(void) { arm_pm_idle = at91sam9_idle; at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC); at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT); /* Register GPIO subsystem */ at91_gpio_init(at91sam9rl_gpio, 4); } static struct resource rstc_resources[] = { [0] = { .start = AT91SAM9RL_BASE_RSTC, .end = AT91SAM9RL_BASE_RSTC + SZ_16 - 1, .flags = IORESOURCE_MEM, }, [1] = { .start = AT91SAM9RL_BASE_SDRAMC, .end = AT91SAM9RL_BASE_SDRAMC + SZ_512 - 1, .flags = IORESOURCE_MEM, }, }; static struct platform_device rstc_device = { .name = "at91-sam9260-reset", .resource = rstc_resources, .num_resources = ARRAY_SIZE(rstc_resources), }; static struct resource shdwc_resources[] = { [0] = { .start = AT91SAM9RL_BASE_SHDWC, .end = AT91SAM9RL_BASE_SHDWC + SZ_16 - 1, .flags = IORESOURCE_MEM, }, }; static struct platform_device shdwc_device = { .name = "at91-poweroff", .resource = shdwc_resources, .num_resources = ARRAY_SIZE(shdwc_resources), }; static void __init at91sam9rl_register_devices(void) { platform_device_register(&rstc_device); platform_device_register(&shdwc_device); } /* -------------------------------------------------------------------- * 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 */ }; static void __init at91sam9rl_init_time(void) { at91sam926x_pit_init(NR_IRQS_LEGACY + AT91_ID_SYS); } AT91_SOC_START(at91sam9rl) .map_io = at91sam9rl_map_io, .default_irq_priority = at91sam9rl_default_irq_priority, .extern_irq = (1 << AT91SAM9RL_ID_IRQ0), .ioremap_registers = at91sam9rl_ioremap_registers, #if defined(CONFIG_OLD_CLK_AT91) .register_clocks = at91sam9rl_register_clocks, #endif .register_devices = at91sam9rl_register_devices, .init = at91sam9rl_initialize, .init_time = at91sam9rl_init_time, AT91_SOC_END