/* * arch/arm/mach-at91/at572d940hf.c * * Antonio R. Costa * Copyright (C) 2008 Atmel * * Copyright (C) 2005 SAN People * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include #include #include #include #include "generic.h" #include "clock.h" static struct map_desc at572d940hf_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 - AT572D940HF_SRAM_SIZE, .pfn = __phys_to_pfn(AT572D940HF_SRAM_BASE), .length = AT572D940HF_SRAM_SIZE, .type = MT_DEVICE, }, }; /* -------------------------------------------------------------------- * Clocks * -------------------------------------------------------------------- */ /* * The peripheral clocks. */ static struct clk pioA_clk = { .name = "pioA_clk", .pmc_mask = 1 << AT572D940HF_ID_PIOA, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pioB_clk = { .name = "pioB_clk", .pmc_mask = 1 << AT572D940HF_ID_PIOB, .type = CLK_TYPE_PERIPHERAL, }; static struct clk pioC_clk = { .name = "pioC_clk", .pmc_mask = 1 << AT572D940HF_ID_PIOC, .type = CLK_TYPE_PERIPHERAL, }; static struct clk macb_clk = { .name = "macb_clk", .pmc_mask = 1 << AT572D940HF_ID_EMAC, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart0_clk = { .name = "usart0_clk", .pmc_mask = 1 << AT572D940HF_ID_US0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart1_clk = { .name = "usart1_clk", .pmc_mask = 1 << AT572D940HF_ID_US1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk usart2_clk = { .name = "usart2_clk", .pmc_mask = 1 << AT572D940HF_ID_US2, .type = CLK_TYPE_PERIPHERAL, }; static struct clk mmc_clk = { .name = "mci_clk", .pmc_mask = 1 << AT572D940HF_ID_MCI, .type = CLK_TYPE_PERIPHERAL, }; static struct clk udc_clk = { .name = "udc_clk", .pmc_mask = 1 << AT572D940HF_ID_UDP, .type = CLK_TYPE_PERIPHERAL, }; static struct clk twi0_clk = { .name = "twi0_clk", .pmc_mask = 1 << AT572D940HF_ID_TWI0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk spi0_clk = { .name = "spi0_clk", .pmc_mask = 1 << AT572D940HF_ID_SPI0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk spi1_clk = { .name = "spi1_clk", .pmc_mask = 1 << AT572D940HF_ID_SPI1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ssc0_clk = { .name = "ssc0_clk", .pmc_mask = 1 << AT572D940HF_ID_SSC0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ssc1_clk = { .name = "ssc1_clk", .pmc_mask = 1 << AT572D940HF_ID_SSC1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ssc2_clk = { .name = "ssc2_clk", .pmc_mask = 1 << AT572D940HF_ID_SSC2, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tc0_clk = { .name = "tc0_clk", .pmc_mask = 1 << AT572D940HF_ID_TC0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tc1_clk = { .name = "tc1_clk", .pmc_mask = 1 << AT572D940HF_ID_TC1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk tc2_clk = { .name = "tc2_clk", .pmc_mask = 1 << AT572D940HF_ID_TC2, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ohci_clk = { .name = "ohci_clk", .pmc_mask = 1 << AT572D940HF_ID_UHP, .type = CLK_TYPE_PERIPHERAL, }; static struct clk ssc3_clk = { .name = "ssc3_clk", .pmc_mask = 1 << AT572D940HF_ID_SSC3, .type = CLK_TYPE_PERIPHERAL, }; static struct clk twi1_clk = { .name = "twi1_clk", .pmc_mask = 1 << AT572D940HF_ID_TWI1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk can0_clk = { .name = "can0_clk", .pmc_mask = 1 << AT572D940HF_ID_CAN0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk can1_clk = { .name = "can1_clk", .pmc_mask = 1 << AT572D940HF_ID_CAN1, .type = CLK_TYPE_PERIPHERAL, }; static struct clk mAgicV_clk = { .name = "mAgicV_clk", .pmc_mask = 1 << AT572D940HF_ID_MSIRQ0, .type = CLK_TYPE_PERIPHERAL, }; static struct clk *periph_clocks[] __initdata = { &pioA_clk, &pioB_clk, &pioC_clk, &macb_clk, &usart0_clk, &usart1_clk, &usart2_clk, &mmc_clk, &udc_clk, &twi0_clk, &spi0_clk, &spi1_clk, &ssc0_clk, &ssc1_clk, &ssc2_clk, &tc0_clk, &tc1_clk, &tc2_clk, &ohci_clk, &ssc3_clk, &twi1_clk, &can0_clk, &can1_clk, &mAgicV_clk, /* irq0 .. irq2 */ }; static struct clk_lookup periph_clocks_lookups[] = { 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", &tc0_clk), CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk), CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_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), }; /* * The five 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 struct clk mAgicV_mem_clk = { .name = "mAgicV_mem_clk", .pmc_mask = AT91_PMC_PCK4, .type = CLK_TYPE_PROGRAMMABLE, .id = 4, }; /* HClocks */ static struct clk hck0 = { .name = "hck0", .pmc_mask = AT91_PMC_HCK0, .type = CLK_TYPE_SYSTEM, .id = 0, }; static struct clk hck1 = { .name = "hck1", .pmc_mask = AT91_PMC_HCK1, .type = CLK_TYPE_SYSTEM, .id = 1, }; static void __init at572d940hf_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); clk_register(&pck2); clk_register(&pck3); clk_register(&mAgicV_mem_clk); clk_register(&hck0); clk_register(&hck1); } static struct clk_lookup console_clock_lookup; void __init at572d940hf_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 at572d940hf_gpio[] = { { .id = AT572D940HF_ID_PIOA, .offset = AT91_PIOA, .clock = &pioA_clk, }, { .id = AT572D940HF_ID_PIOB, .offset = AT91_PIOB, .clock = &pioB_clk, }, { .id = AT572D940HF_ID_PIOC, .offset = AT91_PIOC, .clock = &pioC_clk, } }; static void at572d940hf_reset(void) { at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_PROCRST | AT91_RSTC_PERRST); } /* -------------------------------------------------------------------- * AT572D940HF processor initialization * -------------------------------------------------------------------- */ void __init at572d940hf_map_io(void) { /* Map peripherals */ iotable_init(at572d940hf_io_desc, ARRAY_SIZE(at572d940hf_io_desc)); } void __init at572d940hf_initialize(unsigned long main_clock) { at91_arch_reset = at572d940hf_reset; at91_extern_irq = (1 << AT572D940HF_ID_IRQ0) | (1 << AT572D940HF_ID_IRQ1) | (1 << AT572D940HF_ID_IRQ2); /* Init clock subsystem */ at91_clock_init(main_clock); /* Register the processor-specific clocks */ at572d940hf_register_clocks(); /* Register GPIO subsystem */ at91_gpio_init(at572d940hf_gpio, 3); } /* -------------------------------------------------------------------- * Interrupt initialization * -------------------------------------------------------------------- */ /* * The default interrupt priority levels (0 = lowest, 7 = highest). */ static unsigned int at572d940hf_default_irq_priority[NR_AIC_IRQS] __initdata = { 7, /* Advanced Interrupt Controller */ 7, /* System Peripherals */ 0, /* Parallel IO Controller A */ 0, /* Parallel IO Controller B */ 0, /* Parallel IO Controller C */ 3, /* Ethernet */ 6, /* USART 0 */ 6, /* USART 1 */ 6, /* USART 2 */ 0, /* Multimedia Card Interface */ 4, /* USB Device Port */ 0, /* Two-Wire Interface 0 */ 6, /* Serial Peripheral Interface 0 */ 6, /* Serial Peripheral Interface 1 */ 5, /* Serial Synchronous Controller 0 */ 5, /* Serial Synchronous Controller 1 */ 5, /* Serial Synchronous Controller 2 */ 0, /* Timer Counter 0 */ 0, /* Timer Counter 1 */ 0, /* Timer Counter 2 */ 3, /* USB Host port */ 3, /* Serial Synchronous Controller 3 */ 0, /* Two-Wire Interface 1 */ 0, /* CAN Controller 0 */ 0, /* CAN Controller 1 */ 0, /* mAgicV HALT line */ 0, /* mAgicV SIRQ0 line */ 0, /* mAgicV exception line */ 0, /* mAgicV end of DMA line */ 0, /* Advanced Interrupt Controller */ 0, /* Advanced Interrupt Controller */ 0, /* Advanced Interrupt Controller */ }; void __init at572d940hf_init_interrupts(unsigned int priority[NR_AIC_IRQS]) { if (!priority) priority = at572d940hf_default_irq_priority; /* Initialize the AIC interrupt controller */ at91_aic_init(priority); /* Enable GPIO interrupts */ at91_gpio_irq_setup(); }