waterDataStatisticsCrossAssociation hiddenDangerAnalysis.c 徐寅秋 commit at 2021-04-06

waterDataStatisticsCrossAssociation/waterTankDataAssociation/hiddenDangerAnalysis.c

@@ -864,3 +864,140 @@ err_request:
 #ifdef CONFIG_CPU_FREQ
 static int viper_cpufreq_notifier(struct notifier_block *nb,
 				  unsigned long val, void *data)
+{
+	struct cpufreq_freqs *freq = data;
+
+	/* TODO: Adjust timings??? */
+
+	switch (val) {
+	case CPUFREQ_PRECHANGE:
+		if (freq->old < freq->new) {
+			/* we are getting faster so raise the voltage
+			 * before we change freq */
+			viper_set_core_cpu_voltage(freq->new, 0);
+		}
+		break;
+	case CPUFREQ_POSTCHANGE:
+		if (freq->old > freq->new) {
+			/* we are slowing down so drop the power
+			 * after we change freq */
+			viper_set_core_cpu_voltage(freq->new, 0);
+		}
+		break;
+	case CPUFREQ_RESUMECHANGE:
+		viper_set_core_cpu_voltage(freq->new, 0);
+		break;
+	default:
+		/* ignore */
+		break;
+	}
+
+	return 0;
+}
+
+static struct notifier_block viper_cpufreq_notifier_block = {
+	.notifier_call  = viper_cpufreq_notifier
+};
+
+static void __init viper_init_cpufreq(void)
+{
+	if (cpufreq_register_notifier(&viper_cpufreq_notifier_block,
+				      CPUFREQ_TRANSITION_NOTIFIER))
+		pr_err("viper: Failed to setup cpufreq notifier\n");
+}
+#else
+static inline void viper_init_cpufreq(void) {}
+#endif
+
+static void viper_power_off(void)
+{
+	pr_notice("Shutting off UPS\n");
+	gpio_set_value(VIPER_UPS_GPIO, 1);
+	/* Spin to death... */
+	while (1);
+}
+
+static void __init viper_init(void)
+{
+	u8 version;
+
+	pm_power_off = viper_power_off;
+
+	pxa2xx_mfp_config(ARRAY_AND_SIZE(viper_pin_config));
+
+	pxa_set_ffuart_info(NULL);
+	pxa_set_btuart_info(NULL);
+	pxa_set_stuart_info(NULL);
+
+	/* Wake-up serial console */
+	viper_init_serial_gpio();
+
+	pxa_set_fb_info(NULL, &fb_info);
+
+	/* v1 hardware cannot use the datacs line */
+	version = viper_hw_version();
+	if (version == 0)
+		smc91x_device.num_resources--;
+
+	pxa_set_i2c_info(NULL);
+	platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs));
+
+	viper_init_vcore_gpios();
+	viper_init_cpufreq();
+
+	register_syscore_ops(&viper_cpu_syscore_ops);
+
+	if (version) {
+		pr_info("viper: hardware v%di%d detected. "
+			"CPLD revision %d.\n",
+			VIPER_BOARD_VERSION(version),
+			VIPER_BOARD_ISSUE(version),
+			VIPER_CPLD_REVISION(version));
+		system_rev = (VIPER_BOARD_VERSION(version) << 8) |
+			     (VIPER_BOARD_ISSUE(version) << 4) |
+			     VIPER_CPLD_REVISION(version);
+	} else {
+		pr_info("viper: No version register.\n");
+	}
+
+	i2c_register_board_info(1, ARRAY_AND_SIZE(viper_i2c_devices));
+
+	viper_tpm_init();
+	pxa_set_ac97_info(NULL);
+}
+
+static struct map_desc viper_io_desc[] __initdata = {
+	{
+		.virtual = VIPER_CPLD_BASE,
+		.pfn     = __phys_to_pfn(VIPER_CPLD_PHYS),
+		.length  = 0x00300000,
+		.type    = MT_DEVICE,
+	},
+	{
+		.virtual = VIPER_PC104IO_BASE,
+		.pfn     = __phys_to_pfn(0x30000000),
+		.length  = 0x00800000,
+		.type    = MT_DEVICE,
+	},
+};
+
+static void __init viper_map_io(void)
+{
+	pxa25x_map_io();
+
+	iotable_init(viper_io_desc, ARRAY_SIZE(viper_io_desc));
+
+	PCFR |= PCFR_OPDE;
+}
+
+MACHINE_START(VIPER, "Arcom/Eurotech VIPER SBC")
+	/* Maintainer: Marc Zyngier <maz@misterjones.org> */
+	.atag_offset	= 0x100,
+	.map_io		= viper_map_io,
+	.nr_irqs	= PXA_NR_IRQS,
+	.init_irq	= viper_init_irq,
+	.handle_irq	= pxa25x_handle_irq,
+	.timer          = &pxa_timer,
+	.init_machine	= viper_init,
+	.restart	= pxa_restart,
+MACHINE_END