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14#include <linux/of.h>
15
16#include <asm/pmu.h>
17
18#include "soc.h"
19#include "omap_hwmod.h"
20#include "omap_device.h"
21
22static char *omap2_pmu_oh_names[] = {"mpu"};
23static char *omap3_pmu_oh_names[] = {"mpu", "debugss"};
24static char *omap4430_pmu_oh_names[] = {"l3_main_3", "l3_instr", "debugss"};
25static struct platform_device *omap_pmu_dev;
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36static int __init omap2_init_pmu(unsigned oh_num, char *oh_names[])
37{
38 int i;
39 struct omap_hwmod *oh[3];
40 char *dev_name = "arm-pmu";
41
42 if ((!oh_num) || (oh_num > 3))
43 return -EINVAL;
44
45 for (i = 0; i < oh_num; i++) {
46 oh[i] = omap_hwmod_lookup(oh_names[i]);
47 if (!oh[i]) {
48 pr_err("Could not look up %s hwmod\n", oh_names[i]);
49 return -ENODEV;
50 }
51 }
52
53 omap_pmu_dev = omap_device_build_ss(dev_name, -1, oh, oh_num, NULL, 0);
54 WARN(IS_ERR(omap_pmu_dev), "Can't build omap_device for %s.\n",
55 dev_name);
56
57 return PTR_RET(omap_pmu_dev);
58}
59
60static int __init omap_init_pmu(void)
61{
62 unsigned oh_num;
63 char **oh_names;
64
65
66 if (cpu_is_omap443x()) {
67 pr_info("ARM PMU: not yet supported on OMAP4430 due to missing CTI driver\n");
68 return 0;
69 }
70
71 if (of_have_populated_dt())
72 return 0;
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83 if (cpu_is_omap443x()) {
84 oh_num = ARRAY_SIZE(omap4430_pmu_oh_names);
85 oh_names = omap4430_pmu_oh_names;
86 } else if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
87 oh_num = ARRAY_SIZE(omap3_pmu_oh_names);
88 oh_names = omap3_pmu_oh_names;
89 } else {
90 oh_num = ARRAY_SIZE(omap2_pmu_oh_names);
91 oh_names = omap2_pmu_oh_names;
92 }
93
94 return omap2_init_pmu(oh_num, oh_names);
95}
96omap_subsys_initcall(omap_init_pmu);
97