2 * Copyright (C) ST-Ericsson SA 2010
4 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
5 * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson
6 * License terms: GNU General Public License (GPL) version 2
9 #include <linux/platform_device.h>
11 #include <linux/mfd/db8500-prcmu.h>
12 #include <linux/clksrc-dbx500-prcmu.h>
13 #include <linux/sys_soc.h>
14 #include <linux/err.h>
15 #include <linux/slab.h>
16 #include <linux/stat.h>
18 #include <linux/of_irq.h>
19 #include <linux/irq.h>
20 #include <linux/platform_data/clk-ux500.h>
22 #include <asm/hardware/gic.h>
23 #include <asm/mach/map.h>
25 #include <mach/hardware.h>
26 #include <mach/setup.h>
27 #include <mach/devices.h>
29 #include "board-mop500.h"
31 void __iomem *_PRCMU_BASE;
34 * FIXME: Should we set up the GPIO domain here?
36 * The problem is that we cannot put the interrupt resources into the platform
37 * device until the irqdomain has been added. Right now, we set the GIC interrupt
38 * domain from init_irq(), then load the gpio driver from
39 * core_initcall(nmk_gpio_init) and add the platform devices from
40 * arch_initcall(customize_machine).
42 * This feels fragile because it depends on the gpio device getting probed
43 * _before_ any device uses the gpio interrupts.
45 static const struct of_device_id ux500_dt_irq_match[] = {
46 { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
50 void __init ux500_init_irq(void)
52 void __iomem *dist_base;
53 void __iomem *cpu_base;
55 gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
57 if (cpu_is_u8500_family() || cpu_is_ux540_family()) {
58 dist_base = __io_address(U8500_GIC_DIST_BASE);
59 cpu_base = __io_address(U8500_GIC_CPU_BASE);
64 if (of_have_populated_dt())
65 of_irq_init(ux500_dt_irq_match);
68 gic_init(0, 29, dist_base, cpu_base);
71 * Init clocks here so that they are available for system timer
74 if (cpu_is_u8500_family() || cpu_is_u9540())
75 db8500_prcmu_early_init();
77 if (cpu_is_u8500_family() || cpu_is_u9540())
79 else if (cpu_is_u8540())
83 void __init ux500_init_late(void)
88 static const char * __init ux500_get_machine(void)
90 return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
93 static const char * __init ux500_get_family(void)
95 return kasprintf(GFP_KERNEL, "ux500");
98 static const char * __init ux500_get_revision(void)
100 unsigned int rev = dbx500_revision();
103 return kasprintf(GFP_KERNEL, "%s", "ED");
104 else if (rev >= 0xA0)
105 return kasprintf(GFP_KERNEL, "%d.%d",
106 (rev >> 4) - 0xA + 1, rev & 0xf);
108 return kasprintf(GFP_KERNEL, "%s", "Unknown");
111 static ssize_t ux500_get_process(struct device *dev,
112 struct device_attribute *attr,
115 if (dbx500_id.process == 0x00)
116 return sprintf(buf, "Standard\n");
118 return sprintf(buf, "%02xnm\n", dbx500_id.process);
121 static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
124 soc_dev_attr->soc_id = soc_id;
125 soc_dev_attr->machine = ux500_get_machine();
126 soc_dev_attr->family = ux500_get_family();
127 soc_dev_attr->revision = ux500_get_revision();
130 struct device_attribute ux500_soc_attr =
131 __ATTR(process, S_IRUGO, ux500_get_process, NULL);
133 struct device * __init ux500_soc_device_init(const char *soc_id)
135 struct device *parent;
136 struct soc_device *soc_dev;
137 struct soc_device_attribute *soc_dev_attr;
139 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
141 return ERR_PTR(-ENOMEM);
143 soc_info_populate(soc_dev_attr, soc_id);
145 soc_dev = soc_device_register(soc_dev_attr);
146 if (IS_ERR_OR_NULL(soc_dev)) {
151 parent = soc_device_to_device(soc_dev);
152 if (!IS_ERR_OR_NULL(parent))
153 device_create_file(parent, &ux500_soc_attr);