2 * Copyright (C) 2008-2009 ST-Ericsson
4 * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2, as
8 * published by the Free Software Foundation.
11 #include <linux/types.h>
12 #include <linux/init.h>
13 #include <linux/device.h>
14 #include <linux/amba/bus.h>
15 #include <linux/interrupt.h>
16 #include <linux/irq.h>
17 #include <linux/gpio.h>
18 #include <linux/platform_device.h>
21 #include <asm/mach/map.h>
23 #include <mach/hardware.h>
24 #include <mach/setup.h>
25 #include <mach/devices.h>
28 #include "devices-db8500.h"
29 #include "ste-dma40-db8500.h"
31 /* minimum static i/o mapping required to boot U8500 platforms */
32 static struct map_desc u8500_uart_io_desc[] __initdata = {
33 __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K),
34 __IO_DEV_DESC(U8500_UART2_BASE, SZ_4K),
37 static struct map_desc u8500_io_desc[] __initdata = {
38 __IO_DEV_DESC(U8500_GIC_CPU_BASE, SZ_4K),
39 __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K),
40 __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K),
41 __IO_DEV_DESC(U8500_TWD_BASE, SZ_4K),
42 __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
43 __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K),
44 __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K),
46 __IO_DEV_DESC(U8500_CLKRST1_BASE, SZ_4K),
47 __IO_DEV_DESC(U8500_CLKRST2_BASE, SZ_4K),
48 __IO_DEV_DESC(U8500_CLKRST3_BASE, SZ_4K),
49 __IO_DEV_DESC(U8500_CLKRST5_BASE, SZ_4K),
50 __IO_DEV_DESC(U8500_CLKRST6_BASE, SZ_4K),
52 __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K),
53 __IO_DEV_DESC(U8500_GPIO0_BASE, SZ_4K),
54 __IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K),
55 __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K),
56 __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K),
59 static struct map_desc u8500_ed_io_desc[] __initdata = {
60 __IO_DEV_DESC(U8500_MTU0_BASE_ED, SZ_4K),
61 __IO_DEV_DESC(U8500_CLKRST7_BASE_ED, SZ_8K),
64 static struct map_desc u8500_v1_io_desc[] __initdata = {
65 __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
66 __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE_V1, SZ_4K),
69 static struct map_desc u8500_v2_io_desc[] __initdata = {
70 __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
73 void __init u8500_map_io(void)
76 * Map the UARTs early so that the DEBUG_LL stuff continues to work.
78 iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc));
82 iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
85 iotable_init(u8500_ed_io_desc, ARRAY_SIZE(u8500_ed_io_desc));
86 else if (cpu_is_u8500v1())
87 iotable_init(u8500_v1_io_desc, ARRAY_SIZE(u8500_v1_io_desc));
88 else if (cpu_is_u8500v2())
89 iotable_init(u8500_v2_io_desc, ARRAY_SIZE(u8500_v2_io_desc));
91 _PRCMU_BASE = __io_address(U8500_PRCMU_BASE);
94 static struct resource db8500_pmu_resources[] = {
96 .start = IRQ_DB8500_PMU,
97 .end = IRQ_DB8500_PMU,
98 .flags = IORESOURCE_IRQ,
103 * The PMU IRQ lines of two cores are wired together into a single interrupt.
104 * Bounce the interrupt to the other core if it's not ours.
106 static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler)
108 irqreturn_t ret = handler(irq, dev);
109 int other = !smp_processor_id();
111 if (ret == IRQ_NONE && cpu_online(other))
112 irq_set_affinity(irq, cpumask_of(other));
115 * We should be able to get away with the amount of IRQ_NONEs we give,
116 * while still having the spurious IRQ detection code kick in if the
117 * interrupt really starts hitting spuriously.
122 static struct arm_pmu_platdata db8500_pmu_platdata = {
123 .handle_irq = db8500_pmu_handler,
126 static struct platform_device db8500_pmu_device = {
128 .id = ARM_PMU_DEVICE_CPU,
129 .num_resources = ARRAY_SIZE(db8500_pmu_resources),
130 .resource = db8500_pmu_resources,
131 .dev.platform_data = &db8500_pmu_platdata,
134 static struct platform_device db8500_prcmu_device = {
135 .name = "db8500-prcmu",
138 static struct platform_device *platform_devs[] __initdata = {
141 &db8500_prcmu_device,
144 static resource_size_t __initdata db8500_gpio_base[] = {
145 U8500_GPIOBANK0_BASE,
146 U8500_GPIOBANK1_BASE,
147 U8500_GPIOBANK2_BASE,
148 U8500_GPIOBANK3_BASE,
149 U8500_GPIOBANK4_BASE,
150 U8500_GPIOBANK5_BASE,
151 U8500_GPIOBANK6_BASE,
152 U8500_GPIOBANK7_BASE,
153 U8500_GPIOBANK8_BASE,
156 static void __init db8500_add_gpios(void)
158 struct nmk_gpio_platform_data pdata = {
159 /* No custom data yet */
162 dbx500_add_gpios(ARRAY_AND_SIZE(db8500_gpio_base),
163 IRQ_DB8500_GPIO0, &pdata);
166 static int usb_db8500_rx_dma_cfg[] = {
167 DB8500_DMA_DEV38_USB_OTG_IEP_1_9,
168 DB8500_DMA_DEV37_USB_OTG_IEP_2_10,
169 DB8500_DMA_DEV36_USB_OTG_IEP_3_11,
170 DB8500_DMA_DEV19_USB_OTG_IEP_4_12,
171 DB8500_DMA_DEV18_USB_OTG_IEP_5_13,
172 DB8500_DMA_DEV17_USB_OTG_IEP_6_14,
173 DB8500_DMA_DEV16_USB_OTG_IEP_7_15,
174 DB8500_DMA_DEV39_USB_OTG_IEP_8
177 static int usb_db8500_tx_dma_cfg[] = {
178 DB8500_DMA_DEV38_USB_OTG_OEP_1_9,
179 DB8500_DMA_DEV37_USB_OTG_OEP_2_10,
180 DB8500_DMA_DEV36_USB_OTG_OEP_3_11,
181 DB8500_DMA_DEV19_USB_OTG_OEP_4_12,
182 DB8500_DMA_DEV18_USB_OTG_OEP_5_13,
183 DB8500_DMA_DEV17_USB_OTG_OEP_6_14,
184 DB8500_DMA_DEV16_USB_OTG_OEP_7_15,
185 DB8500_DMA_DEV39_USB_OTG_OEP_8
189 * This function is called from the board init
191 void __init u8500_init_devices(void)
193 if (cpu_is_u8500ed())
194 dma40_u8500ed_fixup();
198 db8500_add_usb(usb_db8500_rx_dma_cfg, usb_db8500_tx_dma_cfg);
200 platform_device_register_simple("cpufreq-u8500", -1, NULL, 0);
201 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));