Commit | Line | Data |
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aa44ef4d | 1 | /* |
c15def1c | 2 | * Copyright (C) 2008-2009 ST-Ericsson SA |
aa44ef4d SK |
3 | * |
4 | * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com> | |
5 | * | |
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. | |
9 | * | |
10 | */ | |
11 | #include <linux/types.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/device.h> | |
14 | #include <linux/amba/bus.h> | |
aa90eb9d | 15 | #include <linux/interrupt.h> |
aa44ef4d SK |
16 | #include <linux/irq.h> |
17 | #include <linux/platform_device.h> | |
cc2c1334 | 18 | #include <linux/io.h> |
3a8e39c9 | 19 | #include <linux/mfd/abx500/ab8500.h> |
661c6af0 | 20 | #include <linux/mfd/dbx500-prcmu.h> |
fa86a764 LJ |
21 | #include <linux/of.h> |
22 | #include <linux/of_platform.h> | |
fa8ad788 | 23 | #include <linux/perf/arm_pmu.h> |
fa86a764 | 24 | #include <linux/regulator/machine.h> |
4040d10a | 25 | #include <linux/random.h> |
aa44ef4d | 26 | |
aa44ef4d | 27 | #include <asm/mach/map.h> |
b8edf848 | 28 | |
e657bcf6 | 29 | #include "setup.h" |
94bdc0e2 | 30 | |
6f6d6433 | 31 | #include "board-mop500-regulators.h" |
fa86a764 | 32 | #include "board-mop500.h" |
6f6d6433 | 33 | #include "db8500-regs.h" |
7a4f2609 | 34 | #include "id.h" |
fbf1eadf | 35 | |
0d01ab3a | 36 | static struct ab8500_platform_data ab8500_platdata = { |
6f6d6433 LJ |
37 | .regulator = &ab8500_regulator_plat_data, |
38 | }; | |
39 | ||
0d01ab3a | 40 | static struct prcmu_pdata db8500_prcmu_pdata = { |
6f6d6433 | 41 | .ab_platdata = &ab8500_platdata, |
6f6d6433 LJ |
42 | .version_offset = DB8500_PRCMU_FW_VERSION_OFFSET, |
43 | .legacy_offset = DB8500_PRCMU_LEGACY_OFFSET, | |
44 | }; | |
45 | ||
0d01ab3a | 46 | static void __init u8500_map_io(void) |
f946738c | 47 | { |
951b833e | 48 | debug_ll_io_init(); |
9bac89e0 | 49 | ux500_setup_id(); |
aa44ef4d SK |
50 | } |
51 | ||
aa90eb9d RV |
52 | /* |
53 | * The PMU IRQ lines of two cores are wired together into a single interrupt. | |
54 | * Bounce the interrupt to the other core if it's not ours. | |
55 | */ | |
56 | static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler) | |
57 | { | |
58 | irqreturn_t ret = handler(irq, dev); | |
59 | int other = !smp_processor_id(); | |
60 | ||
61 | if (ret == IRQ_NONE && cpu_online(other)) | |
62 | irq_set_affinity(irq, cpumask_of(other)); | |
63 | ||
64 | /* | |
65 | * We should be able to get away with the amount of IRQ_NONEs we give, | |
66 | * while still having the spurious IRQ detection code kick in if the | |
67 | * interrupt really starts hitting spuriously. | |
68 | */ | |
69 | return ret; | |
70 | } | |
71 | ||
0d01ab3a | 72 | static struct arm_pmu_platdata db8500_pmu_platdata = { |
aa90eb9d RV |
73 | .handle_irq = db8500_pmu_handler, |
74 | }; | |
75 | ||
eda413c2 LJ |
76 | static const char *db8500_read_soc_id(void) |
77 | { | |
80757f23 | 78 | void __iomem *uid; |
eda413c2 | 79 | |
80757f23 LW |
80 | uid = ioremap(U8500_BB_UID_BASE, 0x20); |
81 | if (!uid) | |
82 | return NULL; | |
4040d10a LW |
83 | /* Throw these device-specific numbers into the entropy pool */ |
84 | add_device_randomness(uid, 0x14); | |
eda413c2 | 85 | return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x", |
33c8abce | 86 | readl((u32 *)uid+0), |
eda413c2 LJ |
87 | readl((u32 *)uid+1), readl((u32 *)uid+2), |
88 | readl((u32 *)uid+3), readl((u32 *)uid+4)); | |
80757f23 | 89 | iounmap(uid); |
eda413c2 LJ |
90 | } |
91 | ||
92 | static struct device * __init db8500_soc_device_init(void) | |
93 | { | |
94 | const char *soc_id = db8500_read_soc_id(); | |
95 | ||
96 | return ux500_soc_device_init(soc_id); | |
97 | } | |
98 | ||
fa86a764 LJ |
99 | static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = { |
100 | /* Requires call-back bindings. */ | |
101 | OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata), | |
cece5c40 | 102 | /* Requires DMA bindings. */ |
acab2f6f LJ |
103 | OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000, |
104 | "ux500-msp-i2s.0", &msp0_platform_data), | |
105 | OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000, | |
106 | "ux500-msp-i2s.1", &msp1_platform_data), | |
107 | OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000, | |
108 | "ux500-msp-i2s.2", &msp2_platform_data), | |
109 | OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000, | |
110 | "ux500-msp-i2s.3", &msp3_platform_data), | |
1b1d2e83 | 111 | /* Requires non-DT:able platform data. */ |
05ec260e LW |
112 | OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", |
113 | &db8500_prcmu_pdata), | |
946cc7dd | 114 | OF_DEV_AUXDATA("stericsson,ux500-cryp", 0xa03cb000, "cryp1", NULL), |
f016d440 | 115 | OF_DEV_AUXDATA("stericsson,ux500-hash", 0xa03c2000, "hash1", NULL), |
ef95f7ff FB |
116 | OF_DEV_AUXDATA("stericsson,snd-soc-mop500", 0, "snd-soc-mop500.0", |
117 | NULL), | |
fa86a764 LJ |
118 | {}, |
119 | }; | |
120 | ||
c21a43b7 | 121 | static struct of_dev_auxdata u8540_auxdata_lookup[] __initdata = { |
c21a43b7 LJ |
122 | OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu", |
123 | &db8500_prcmu_pdata), | |
124 | {}, | |
125 | }; | |
126 | ||
fa86a764 LJ |
127 | static const struct of_device_id u8500_local_bus_nodes[] = { |
128 | /* only create devices below soc node */ | |
129 | { .compatible = "stericsson,db8500", }, | |
130 | { .compatible = "stericsson,db8500-prcmu", }, | |
131 | { .compatible = "simple-bus"}, | |
132 | { }, | |
133 | }; | |
134 | ||
135 | static void __init u8500_init_machine(void) | |
136 | { | |
1e74043a | 137 | struct device *parent = db8500_soc_device_init(); |
fa86a764 | 138 | |
c21a43b7 LJ |
139 | /* automatically probe child nodes of dbx5x0 devices */ |
140 | if (of_machine_is_compatible("st-ericsson,u8540")) | |
141 | of_platform_populate(NULL, u8500_local_bus_nodes, | |
142 | u8540_auxdata_lookup, parent); | |
143 | else | |
144 | of_platform_populate(NULL, u8500_local_bus_nodes, | |
145 | u8500_auxdata_lookup, parent); | |
fa86a764 LJ |
146 | } |
147 | ||
79b40753 LJ |
148 | static const char * stericsson_dt_platform_compat[] = { |
149 | "st-ericsson,u8500", | |
150 | "st-ericsson,u8540", | |
151 | "st-ericsson,u9500", | |
152 | "st-ericsson,u9540", | |
fa86a764 LJ |
153 | NULL, |
154 | }; | |
155 | ||
46c1bf81 | 156 | DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)") |
fa86a764 LJ |
157 | .map_io = u8500_map_io, |
158 | .init_irq = ux500_init_irq, | |
fa86a764 | 159 | .init_machine = u8500_init_machine, |
74a1c9ab | 160 | .init_late = NULL, |
79b40753 | 161 | .dt_compat = stericsson_dt_platform_compat, |
bd93ec50 | 162 | .restart = ux500_restart, |
fa86a764 | 163 | MACHINE_END |