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/dbx500-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/irqchip.h>
21 #include <linux/irqchip/arm-gic.h>
22 #include <linux/platform_data/clk-ux500.h>
23 #include <linux/platform_data/arm-ux500-pm.h>
25 #include <asm/mach/map.h>
30 #include "board-mop500.h"
31 #include "db8500-regs.h"
34 void ux500_restart(enum reboot_mode mode, const char *cmd)
39 prcmu_system_reset(0);
43 * FIXME: Should we set up the GPIO domain here?
45 * The problem is that we cannot put the interrupt resources into the platform
46 * device until the irqdomain has been added. Right now, we set the GIC interrupt
47 * domain from init_irq(), then load the gpio driver from
48 * core_initcall(nmk_gpio_init) and add the platform devices from
49 * arch_initcall(customize_machine).
51 * This feels fragile because it depends on the gpio device getting probed
52 * _before_ any device uses the gpio interrupts.
54 void __init ux500_init_irq(void)
56 void __iomem *dist_base;
57 void __iomem *cpu_base;
59 gic_arch_extn.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_MASK_ON_SUSPEND;
61 if (cpu_is_u8500_family() || cpu_is_ux540_family()) {
62 dist_base = __io_address(U8500_GIC_DIST_BASE);
63 cpu_base = __io_address(U8500_GIC_CPU_BASE);
68 if (of_have_populated_dt())
72 gic_init(0, 29, dist_base, cpu_base);
75 * Init clocks here so that they are available for system timer
78 if (cpu_is_u8500_family()) {
79 prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
80 ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
82 if (of_have_populated_dt())
83 u8500_of_clk_init(U8500_CLKRST1_BASE,
89 u8500_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
90 U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
92 } else if (cpu_is_u9540()) {
93 prcmu_early_init(U8500_PRCMU_BASE, SZ_8K - 1);
94 ux500_pm_init(U8500_PRCMU_BASE, SZ_8K - 1);
95 u9540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
96 U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
98 } else if (cpu_is_u8540()) {
99 prcmu_early_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
100 ux500_pm_init(U8500_PRCMU_BASE, SZ_8K + SZ_4K - 1);
101 u8540_clk_init(U8500_CLKRST1_BASE, U8500_CLKRST2_BASE,
102 U8500_CLKRST3_BASE, U8500_CLKRST5_BASE,
107 static const char * __init ux500_get_machine(void)
109 return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber());
112 static const char * __init ux500_get_family(void)
114 return kasprintf(GFP_KERNEL, "ux500");
117 static const char * __init ux500_get_revision(void)
119 unsigned int rev = dbx500_revision();
122 return kasprintf(GFP_KERNEL, "%s", "ED");
123 else if (rev >= 0xA0)
124 return kasprintf(GFP_KERNEL, "%d.%d",
125 (rev >> 4) - 0xA + 1, rev & 0xf);
127 return kasprintf(GFP_KERNEL, "%s", "Unknown");
130 static ssize_t ux500_get_process(struct device *dev,
131 struct device_attribute *attr,
134 if (dbx500_id.process == 0x00)
135 return sprintf(buf, "Standard\n");
137 return sprintf(buf, "%02xnm\n", dbx500_id.process);
140 static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr,
143 soc_dev_attr->soc_id = soc_id;
144 soc_dev_attr->machine = ux500_get_machine();
145 soc_dev_attr->family = ux500_get_family();
146 soc_dev_attr->revision = ux500_get_revision();
149 struct device_attribute ux500_soc_attr =
150 __ATTR(process, S_IRUGO, ux500_get_process, NULL);
152 struct device * __init ux500_soc_device_init(const char *soc_id)
154 struct device *parent;
155 struct soc_device *soc_dev;
156 struct soc_device_attribute *soc_dev_attr;
158 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
160 return ERR_PTR(-ENOMEM);
162 soc_info_populate(soc_dev_attr, soc_id);
164 soc_dev = soc_device_register(soc_dev_attr);
165 if (IS_ERR(soc_dev)) {
170 parent = soc_device_to_device(soc_dev);
171 device_create_file(parent, &ux500_soc_attr);