/* * Copyright (C) 2008-2009 ST-Ericsson SA * * Author: Srinidhi KASAGAR * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2, as * published by the Free Software Foundation. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "setup.h" #include "devices.h" #include "irqs.h" #include "devices-db8500.h" #include "ste-dma40-db8500.h" #include "db8500-regs.h" #include "board-mop500.h" #include "id.h" /* minimum static i/o mapping required to boot U8500 platforms */ static struct map_desc u8500_uart_io_desc[] __initdata = { __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K), __IO_DEV_DESC(U8500_UART2_BASE, SZ_4K), }; /* U8500 and U9540 common io_desc */ static struct map_desc u8500_common_io_desc[] __initdata = { /* SCU base also covers GIC CPU BASE and TWD with its 4K page */ __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K), __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K), __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K), __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K), __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K), __IO_DEV_DESC(U8500_CLKRST1_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST2_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST3_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST5_BASE, SZ_4K), __IO_DEV_DESC(U8500_CLKRST6_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO0_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K), __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K), }; /* U8500 IO map specific description */ static struct map_desc u8500_io_desc[] __initdata = { __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K), __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K), }; /* U9540 IO map specific description */ static struct map_desc u9540_io_desc[] __initdata = { __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K + SZ_8K), __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K + SZ_8K), }; void __init u8500_map_io(void) { /* * Map the UARTs early so that the DEBUG_LL stuff continues to work. */ iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc)); ux500_map_io(); iotable_init(u8500_common_io_desc, ARRAY_SIZE(u8500_common_io_desc)); if (cpu_is_ux540_family()) iotable_init(u9540_io_desc, ARRAY_SIZE(u9540_io_desc)); else iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc)); } static struct resource db8500_pmu_resources[] = { [0] = { .start = IRQ_DB8500_PMU, .end = IRQ_DB8500_PMU, .flags = IORESOURCE_IRQ, }, }; /* * The PMU IRQ lines of two cores are wired together into a single interrupt. * Bounce the interrupt to the other core if it's not ours. */ static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler) { irqreturn_t ret = handler(irq, dev); int other = !smp_processor_id(); if (ret == IRQ_NONE && cpu_online(other)) irq_set_affinity(irq, cpumask_of(other)); /* * We should be able to get away with the amount of IRQ_NONEs we give, * while still having the spurious IRQ detection code kick in if the * interrupt really starts hitting spuriously. */ return ret; } struct arm_pmu_platdata db8500_pmu_platdata = { .handle_irq = db8500_pmu_handler, }; static struct platform_device db8500_pmu_device = { .name = "arm-pmu", .id = -1, .num_resources = ARRAY_SIZE(db8500_pmu_resources), .resource = db8500_pmu_resources, .dev.platform_data = &db8500_pmu_platdata, }; static struct platform_device *platform_devs[] __initdata = { &u8500_dma40_device, &db8500_pmu_device, }; static resource_size_t __initdata db8500_gpio_base[] = { U8500_GPIOBANK0_BASE, U8500_GPIOBANK1_BASE, U8500_GPIOBANK2_BASE, U8500_GPIOBANK3_BASE, U8500_GPIOBANK4_BASE, U8500_GPIOBANK5_BASE, U8500_GPIOBANK6_BASE, U8500_GPIOBANK7_BASE, U8500_GPIOBANK8_BASE, }; static void __init db8500_add_gpios(struct device *parent) { struct nmk_gpio_platform_data pdata = { .supports_sleepmode = true, }; dbx500_add_gpios(parent, ARRAY_AND_SIZE(db8500_gpio_base), IRQ_DB8500_GPIO0, &pdata); dbx500_add_pinctrl(parent, "pinctrl-db8500", U8500_PRCMU_BASE); } static int usb_db8500_rx_dma_cfg[] = { DB8500_DMA_DEV38_USB_OTG_IEP_1_9, DB8500_DMA_DEV37_USB_OTG_IEP_2_10, DB8500_DMA_DEV36_USB_OTG_IEP_3_11, DB8500_DMA_DEV19_USB_OTG_IEP_4_12, DB8500_DMA_DEV18_USB_OTG_IEP_5_13, DB8500_DMA_DEV17_USB_OTG_IEP_6_14, DB8500_DMA_DEV16_USB_OTG_IEP_7_15, DB8500_DMA_DEV39_USB_OTG_IEP_8 }; static int usb_db8500_tx_dma_cfg[] = { DB8500_DMA_DEV38_USB_OTG_OEP_1_9, DB8500_DMA_DEV37_USB_OTG_OEP_2_10, DB8500_DMA_DEV36_USB_OTG_OEP_3_11, DB8500_DMA_DEV19_USB_OTG_OEP_4_12, DB8500_DMA_DEV18_USB_OTG_OEP_5_13, DB8500_DMA_DEV17_USB_OTG_OEP_6_14, DB8500_DMA_DEV16_USB_OTG_OEP_7_15, DB8500_DMA_DEV39_USB_OTG_OEP_8 }; static const char *db8500_read_soc_id(void) { void __iomem *uid = __io_address(U8500_BB_UID_BASE); /* Throw these device-specific numbers into the entropy pool */ add_device_randomness(uid, 0x14); return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x", readl((u32 *)uid+0), readl((u32 *)uid+1), readl((u32 *)uid+2), readl((u32 *)uid+3), readl((u32 *)uid+4)); } static struct device * __init db8500_soc_device_init(void) { const char *soc_id = db8500_read_soc_id(); return ux500_soc_device_init(soc_id); } /* * This function is called from the board init */ struct device * __init u8500_init_devices(struct ab8500_platform_data *ab8500) { struct device *parent; int i; parent = db8500_soc_device_init(); db8500_add_rtc(parent); db8500_add_gpios(parent); db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); for (i = 0; i < ARRAY_SIZE(platform_devs); i++) platform_devs[i]->dev.parent = parent; db8500_prcmu_device.dev.platform_data = ab8500; platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); return parent; } #ifdef CONFIG_MACH_UX500_DT /* TODO: Once all pieces are DT:ed, remove completely. */ static struct device * __init u8500_of_init_devices(void) { struct device *parent = db8500_soc_device_init(); db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); u8500_dma40_device.dev.parent = parent; /* * Devices to be DT:ed: * u8500_dma40_device = todo * db8500_pmu_device = done * db8500_prcmu_device = done */ platform_device_register(&u8500_dma40_device); return parent; } static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = { /* Requires call-back bindings. */ OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata), /* Requires DMA bindings. */ OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat), OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat), OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat), OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0", &ssp0_plat), OF_DEV_AUXDATA("arm,pl18x", 0x80126000, "sdi0", &mop500_sdi0_data), OF_DEV_AUXDATA("arm,pl18x", 0x80118000, "sdi1", &mop500_sdi1_data), OF_DEV_AUXDATA("arm,pl18x", 0x80005000, "sdi2", &mop500_sdi2_data), OF_DEV_AUXDATA("arm,pl18x", 0x80114000, "sdi4", &mop500_sdi4_data), /* Requires clock name bindings. */ OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e000, "gpio.0", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0x8012e080, "gpio.1", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e000, "gpio.2", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e080, "gpio.3", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e100, "gpio.4", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0x8000e180, "gpio.5", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e000, "gpio.6", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0x8011e080, "gpio.7", NULL), OF_DEV_AUXDATA("st,nomadik-gpio", 0xa03fe000, "gpio.8", NULL), OF_DEV_AUXDATA("st,nomadik-i2c", 0x80004000, "nmk-i2c.0", NULL), OF_DEV_AUXDATA("st,nomadik-i2c", 0x80122000, "nmk-i2c.1", NULL), OF_DEV_AUXDATA("st,nomadik-i2c", 0x80128000, "nmk-i2c.2", NULL), OF_DEV_AUXDATA("st,nomadik-i2c", 0x80110000, "nmk-i2c.3", NULL), OF_DEV_AUXDATA("st,nomadik-i2c", 0x8012a000, "nmk-i2c.4", NULL), OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", &db8500_prcmu_pdata), OF_DEV_AUXDATA("smsc,lan9115", 0x50000000, "smsc911x", NULL), /* Requires device name bindings. */ OF_DEV_AUXDATA("stericsson,nmk-pinctrl", U8500_PRCMU_BASE, "pinctrl-db8500", NULL), /* Requires clock name and DMA bindings. */ OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000, "ux500-msp-i2s.0", &msp0_platform_data), OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000, "ux500-msp-i2s.1", &msp1_platform_data), OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000, "ux500-msp-i2s.2", &msp2_platform_data), OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000, "ux500-msp-i2s.3", &msp3_platform_data), {}, }; static const struct of_device_id u8500_local_bus_nodes[] = { /* only create devices below soc node */ { .compatible = "stericsson,db8500", }, { .compatible = "stericsson,db8500-prcmu", }, { .compatible = "simple-bus"}, { }, }; static void __init u8500_init_machine(void) { struct device *parent = NULL; /* Pinmaps must be in place before devices register */ if (of_machine_is_compatible("st-ericsson,mop500")) mop500_pinmaps_init(); else if (of_machine_is_compatible("calaosystems,snowball-a9500")) { snowball_pinmaps_init(); mop500_snowball_ethernet_clock_enable(); } else if (of_machine_is_compatible("st-ericsson,hrefv60+")) hrefv60_pinmaps_init(); else if (of_machine_is_compatible("st-ericsson,ccu9540")) {} /* TODO: Add pinmaps for ccu9540 board. */ /* TODO: Export SoC, USB, cpu-freq and DMA40 */ parent = u8500_of_init_devices(); /* automatically probe child nodes of db8500 device */ of_platform_populate(NULL, u8500_local_bus_nodes, u8500_auxdata_lookup, parent); } static const char * stericsson_dt_platform_compat[] = { "st-ericsson,u8500", "st-ericsson,u8540", "st-ericsson,u9500", "st-ericsson,u9540", NULL, }; DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)") .smp = smp_ops(ux500_smp_ops), .map_io = u8500_map_io, .init_irq = ux500_init_irq, /* we re-use nomadik timer here */ .init_time = ux500_timer_init, .init_machine = u8500_init_machine, .init_late = NULL, .dt_compat = stericsson_dt_platform_compat, MACHINE_END #endif