| /* |
| * Copyright (C) 2008-2009 ST-Ericsson SA |
| * |
| * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com> |
| * |
| * 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 <linux/types.h> |
| #include <linux/init.h> |
| #include <linux/device.h> |
| #include <linux/amba/bus.h> |
| #include <linux/interrupt.h> |
| #include <linux/irq.h> |
| #include <linux/platform_device.h> |
| #include <linux/io.h> |
| #include <linux/mfd/abx500/ab8500.h> |
| #include <linux/platform_data/usb-musb-ux500.h> |
| #include <linux/random.h> |
| |
| #include <asm/pmu.h> |
| #include <asm/mach/map.h> |
| #include <plat/gpio-nomadik.h> |
| #include <mach/hardware.h> |
| #include <mach/setup.h> |
| #include <mach/devices.h> |
| #include <mach/db8500-regs.h> |
| |
| #include "devices-db8500.h" |
| #include "ste-dma40-db8500.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)); |
| |
| _PRCMU_BASE = __io_address(U8500_PRCMU_BASE); |
| } |
| |
| 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 db8500_prcmu_device = { |
| .name = "db8500-prcmu", |
| }; |
| |
| static struct platform_device *platform_devs[] __initdata = { |
| &u8500_dma40_device, |
| &db8500_pmu_device, |
| &db8500_prcmu_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"); |
| } |
| |
| 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+1), |
| 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); |
| |
| platform_device_register_data(parent, |
| "cpufreq-u8500", -1, NULL, 0); |
| |
| 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; |
| } |
| |
| /* TODO: Once all pieces are DT:ed, remove completely. */ |
| struct device * __init u8500_of_init_devices(void) |
| { |
| struct device *parent; |
| |
| parent = db8500_soc_device_init(); |
| |
| db8500_add_usb(parent, usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg); |
| |
| platform_device_register_data(parent, |
| "cpufreq-u8500", -1, NULL, 0); |
| |
| 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; |
| } |