--- zzzz-none-000/linux-3.10.107/arch/arm/mach-at91/at91rm9200.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/arch/arm/mach-at91/at91rm9200.c 2021-02-04 17:41:59.000000000 +0000 @@ -1,394 +1,48 @@ /* - * arch/arm/mach-at91/at91rm9200.c + * Setup code for AT91RM9200 * - * 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. + * Copyright (C) 2011 Atmel, + * 2011 Nicolas Ferre + * 2012 Joachim Eastwood * + * Licensed under GPLv2 or later. */ -#include +#include +#include -#include #include -#include #include -#include -#include -#include -#include -#include "at91_aic.h" -#include "soc.h" #include "generic.h" -#include "clock.h" -#include "sam9_smc.h" - -/* -------------------------------------------------------------------- - * Clocks - * -------------------------------------------------------------------- */ - -/* - * The peripheral clocks. - */ -static struct clk udc_clk = { - .name = "udc_clk", - .pmc_mask = 1 << AT91RM9200_ID_UDP, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk ohci_clk = { - .name = "ohci_clk", - .pmc_mask = 1 << AT91RM9200_ID_UHP, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk ether_clk = { - .name = "ether_clk", - .pmc_mask = 1 << AT91RM9200_ID_EMAC, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk mmc_clk = { - .name = "mci_clk", - .pmc_mask = 1 << AT91RM9200_ID_MCI, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk twi_clk = { - .name = "twi_clk", - .pmc_mask = 1 << AT91RM9200_ID_TWI, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk usart0_clk = { - .name = "usart0_clk", - .pmc_mask = 1 << AT91RM9200_ID_US0, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk usart1_clk = { - .name = "usart1_clk", - .pmc_mask = 1 << AT91RM9200_ID_US1, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk usart2_clk = { - .name = "usart2_clk", - .pmc_mask = 1 << AT91RM9200_ID_US2, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk usart3_clk = { - .name = "usart3_clk", - .pmc_mask = 1 << AT91RM9200_ID_US3, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk spi_clk = { - .name = "spi_clk", - .pmc_mask = 1 << AT91RM9200_ID_SPI, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk pioA_clk = { - .name = "pioA_clk", - .pmc_mask = 1 << AT91RM9200_ID_PIOA, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk pioB_clk = { - .name = "pioB_clk", - .pmc_mask = 1 << AT91RM9200_ID_PIOB, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk pioC_clk = { - .name = "pioC_clk", - .pmc_mask = 1 << AT91RM9200_ID_PIOC, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk pioD_clk = { - .name = "pioD_clk", - .pmc_mask = 1 << AT91RM9200_ID_PIOD, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk ssc0_clk = { - .name = "ssc0_clk", - .pmc_mask = 1 << AT91RM9200_ID_SSC0, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk ssc1_clk = { - .name = "ssc1_clk", - .pmc_mask = 1 << AT91RM9200_ID_SSC1, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk ssc2_clk = { - .name = "ssc2_clk", - .pmc_mask = 1 << AT91RM9200_ID_SSC2, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk tc0_clk = { - .name = "tc0_clk", - .pmc_mask = 1 << AT91RM9200_ID_TC0, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk tc1_clk = { - .name = "tc1_clk", - .pmc_mask = 1 << AT91RM9200_ID_TC1, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk tc2_clk = { - .name = "tc2_clk", - .pmc_mask = 1 << AT91RM9200_ID_TC2, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk tc3_clk = { - .name = "tc3_clk", - .pmc_mask = 1 << AT91RM9200_ID_TC3, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk tc4_clk = { - .name = "tc4_clk", - .pmc_mask = 1 << AT91RM9200_ID_TC4, - .type = CLK_TYPE_PERIPHERAL, -}; -static struct clk tc5_clk = { - .name = "tc5_clk", - .pmc_mask = 1 << AT91RM9200_ID_TC5, - .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, - &udc_clk, - &twi_clk, - &spi_clk, - &ssc0_clk, - &ssc1_clk, - &ssc2_clk, - &tc0_clk, - &tc1_clk, - &tc2_clk, - &tc3_clk, - &tc4_clk, - &tc5_clk, - &ohci_clk, - ðer_clk, - // irq0 .. irq6 -}; - -static struct clk_lookup periph_clocks_lookups[] = { - 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("t0_clk", "atmel_tcb.1", &tc3_clk), - CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk), - CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_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", "at91rm9200_ssc.2", &ssc2_clk), - CLKDEV_CON_DEV_ID("pclk", "fffd0000.ssc", &ssc0_clk), - CLKDEV_CON_DEV_ID("pclk", "fffd4000.ssc", &ssc1_clk), - CLKDEV_CON_DEV_ID("pclk", "fffd8000.ssc", &ssc2_clk), - CLKDEV_CON_DEV_ID(NULL, "i2c-at91rm9200.0", &twi_clk), - /* fake hclk clock */ - CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_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), - /* usart lookup table for DT entries */ - CLKDEV_CON_DEV_ID("usart", "fffff200.serial", &mck), - CLKDEV_CON_DEV_ID("usart", "fffc0000.serial", &usart0_clk), - CLKDEV_CON_DEV_ID("usart", "fffc4000.serial", &usart1_clk), - CLKDEV_CON_DEV_ID("usart", "fffc8000.serial", &usart2_clk), - CLKDEV_CON_DEV_ID("usart", "fffcc000.serial", &usart3_clk), - /* tc lookup table for DT entries */ - 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("t0_clk", "fffa4000.timer", &tc3_clk), - CLKDEV_CON_DEV_ID("t1_clk", "fffa4000.timer", &tc4_clk), - CLKDEV_CON_DEV_ID("t2_clk", "fffa4000.timer", &tc5_clk), - CLKDEV_CON_DEV_ID("mci_clk", "fffb4000.mmc", &mmc_clk), - CLKDEV_CON_DEV_ID("emac_clk", "fffbc000.ethernet", ðer_clk), - CLKDEV_CON_DEV_ID(NULL, "fffb8000.i2c", &twi_clk), - CLKDEV_CON_DEV_ID("hclk", "300000.ohci", &ohci_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), -}; - -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 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 at91rm9200_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); -} - -/* -------------------------------------------------------------------- - * GPIO - * -------------------------------------------------------------------- */ +#include "soc.h" -static struct at91_gpio_bank at91rm9200_gpio[] __initdata = { - { - .id = AT91RM9200_ID_PIOA, - .regbase = AT91RM9200_BASE_PIOA, - }, { - .id = AT91RM9200_ID_PIOB, - .regbase = AT91RM9200_BASE_PIOB, - }, { - .id = AT91RM9200_ID_PIOC, - .regbase = AT91RM9200_BASE_PIOC, - }, { - .id = AT91RM9200_ID_PIOD, - .regbase = AT91RM9200_BASE_PIOD, - } +static const struct at91_soc rm9200_socs[] = { + AT91_SOC(AT91RM9200_CIDR_MATCH, 0, "at91rm9200 BGA", "at91rm9200"), + { /* sentinel */ }, }; -static void at91rm9200_idle(void) -{ - /* - * Disable the processor clock. The processor will be automatically - * re-enabled by an interrupt or by a reset. - */ - at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK); -} - -static void at91rm9200_restart(char mode, const char *cmd) +static void __init at91rm9200_dt_device_init(void) { - /* - * Perform a hardware reset with the use of the Watchdog timer. - */ - at91_st_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1); - at91_st_write(AT91_ST_CR, AT91_ST_WDRST); -} + struct soc_device *soc; + struct device *soc_dev = NULL; -/* -------------------------------------------------------------------- - * AT91RM9200 processor initialization - * -------------------------------------------------------------------- */ -static void __init at91rm9200_map_io(void) -{ - /* Map peripherals */ - at91_init_sram(0, AT91RM9200_SRAM_BASE, AT91RM9200_SRAM_SIZE); -} + soc = at91_soc_init(rm9200_socs); + if (soc != NULL) + soc_dev = soc_device_to_device(soc); -static void __init at91rm9200_ioremap_registers(void) -{ - at91rm9200_ioremap_st(AT91RM9200_BASE_ST); - at91_ioremap_ramc(0, AT91RM9200_BASE_MC, 256); -} + of_platform_populate(NULL, of_default_bus_match_table, NULL, soc_dev); -static void __init at91rm9200_initialize(void) -{ arm_pm_idle = at91rm9200_idle; - arm_pm_restart = at91rm9200_restart; - at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1) - | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3) - | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5) - | (1 << AT91RM9200_ID_IRQ6); - - /* Initialize GPIO subsystem */ - at91_gpio_init(at91rm9200_gpio, - cpu_is_at91rm9200_bga() ? AT91RM9200_BGA : AT91RM9200_PQFP); + at91rm9200_pm_init(); } - -/* -------------------------------------------------------------------- - * Interrupt initialization - * -------------------------------------------------------------------- */ - -/* - * The default interrupt priority levels (0 = lowest, 7 = highest). - */ -static unsigned int at91rm9200_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 */ - 5, /* USART 0 */ - 5, /* USART 1 */ - 5, /* USART 2 */ - 5, /* USART 3 */ - 0, /* Multimedia Card Interface */ - 2, /* USB Device Port */ - 6, /* Two-Wire Interface */ - 5, /* Serial Peripheral Interface */ - 4, /* Serial Synchronous Controller 0 */ - 4, /* Serial Synchronous Controller 1 */ - 4, /* Serial Synchronous Controller 2 */ - 0, /* Timer Counter 0 */ - 0, /* Timer Counter 1 */ - 0, /* Timer Counter 2 */ - 0, /* Timer Counter 3 */ - 0, /* Timer Counter 4 */ - 0, /* Timer Counter 5 */ - 2, /* USB Host port */ - 3, /* Ethernet MAC */ - 0, /* Advanced Interrupt Controller (IRQ0) */ - 0, /* Advanced Interrupt Controller (IRQ1) */ - 0, /* Advanced Interrupt Controller (IRQ2) */ - 0, /* Advanced Interrupt Controller (IRQ3) */ - 0, /* Advanced Interrupt Controller (IRQ4) */ - 0, /* Advanced Interrupt Controller (IRQ5) */ - 0 /* Advanced Interrupt Controller (IRQ6) */ +static const char *const at91rm9200_dt_board_compat[] __initconst = { + "atmel,at91rm9200", + NULL }; -AT91_SOC_START(at91rm9200) - .map_io = at91rm9200_map_io, - .default_irq_priority = at91rm9200_default_irq_priority, - .ioremap_registers = at91rm9200_ioremap_registers, - .register_clocks = at91rm9200_register_clocks, - .init = at91rm9200_initialize, -AT91_SOC_END +DT_MACHINE_START(at91rm9200_dt, "Atmel AT91RM9200") + .init_machine = at91rm9200_dt_device_init, + .dt_compat = at91rm9200_dt_board_compat, +MACHINE_END