static int __init via_pmu_dev_init()

in via-pmu.c [512:575]

• 56 lines of code
• 12 McCabe index (conditional complexity)

static int __init via_pmu_dev_init(void)
{
	if (pmu_state == uninitialized)
		return -ENODEV;

#ifdef CONFIG_PMAC_BACKLIGHT
	/* Initialize backlight */
	pmu_backlight_init();
#endif

#ifdef CONFIG_PPC32
  	if (of_machine_is_compatible("AAPL,3400/2400") ||
  		of_machine_is_compatible("AAPL,3500")) {
		int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO,
			NULL, PMAC_MB_INFO_MODEL, 0);
		pmu_battery_count = 1;
		if (mb == PMAC_TYPE_COMET)
			pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET;
		else
			pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER;
	} else if (of_machine_is_compatible("AAPL,PowerBook1998") ||
		of_machine_is_compatible("PowerBook1,1")) {
		pmu_battery_count = 2;
		pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
		pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
	} else {
		struct device_node* prim =
			of_find_node_by_name(NULL, "power-mgt");
		const u32 *prim_info = NULL;
		if (prim)
			prim_info = of_get_property(prim, "prim-info", NULL);
		if (prim_info) {
			/* Other stuffs here yet unknown */
			pmu_battery_count = (prim_info[6] >> 16) & 0xff;
			pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART;
			if (pmu_battery_count > 1)
				pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART;
		}
		of_node_put(prim);
	}
#endif /* CONFIG_PPC32 */

	/* Create /proc/pmu */
	proc_pmu_root = proc_mkdir("pmu", NULL);
	if (proc_pmu_root) {
		long i;

		for (i=0; i<pmu_battery_count; i++) {
			char title[16];
			sprintf(title, "battery_%ld", i);
			proc_pmu_batt[i] = proc_create_single_data(title, 0,
					proc_pmu_root, pmu_battery_proc_show,
					(void *)i);
		}

		proc_pmu_info = proc_create_single("info", 0, proc_pmu_root,
				pmu_info_proc_show);
		proc_pmu_irqstats = proc_create_single("interrupts", 0,
				proc_pmu_root, pmu_irqstats_proc_show);
		proc_pmu_options = proc_create("options", 0600, proc_pmu_root,
						&pmu_options_proc_ops);
	}
	return 0;
}