waterDataFluctuationCorrelation hiddenDangerAnalysis.c 李欣儒 commit at 2020-11-18

waterDataFluctuationCorrelation/fluctuationCorrelationOfFireHydrant/hiddenDangerAnalysis.c

@@ -313,3 +313,173 @@ evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
 	 */
 	evm_led_dev = platform_device_alloc("leds-gpio", 0);
 	platform_device_add_data(evm_led_dev,
+			&evm_led_data, sizeof evm_led_data);
+
+	evm_led_dev->dev.parent = &client->dev;
+	status = platform_device_add(evm_led_dev);
+	if (status < 0) {
+		platform_device_put(evm_led_dev);
+		evm_led_dev = NULL;
+	}
+	return status;
+}
+
+static int
+evm_led_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	if (evm_led_dev) {
+		platform_device_unregister(evm_led_dev);
+		evm_led_dev = NULL;
+	}
+	return 0;
+}
+
+static struct pcf857x_platform_data pcf_data_u2 = {
+	.gpio_base	= PCF_Uxx_BASE(0),
+	.setup		= evm_led_setup,
+	.teardown	= evm_led_teardown,
+};
+
+
+/* U18 - A/V clock generator and user switch */
+
+static int sw_gpio;
+
+static ssize_t
+sw_show(struct device *d, struct device_attribute *a, char *buf)
+{
+	char *s = gpio_get_value_cansleep(sw_gpio) ? "on\n" : "off\n";
+
+	strcpy(buf, s);
+	return strlen(s);
+}
+
+static DEVICE_ATTR(user_sw, S_IRUGO, sw_show, NULL);
+
+static int
+evm_u18_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	int	status;
+
+	/* export dip switch option */
+	sw_gpio = gpio + 7;
+	status = gpio_request(sw_gpio, "user_sw");
+	if (status == 0)
+		status = gpio_direction_input(sw_gpio);
+	if (status == 0)
+		status = device_create_file(&client->dev, &dev_attr_user_sw);
+	else
+		gpio_free(sw_gpio);
+	if (status != 0)
+		sw_gpio = -EINVAL;
+
+	/* audio PLL:  48 kHz (vs 44.1 or 32), single rate (vs double) */
+	gpio_request(gpio + 3, "pll_fs2");
+	gpio_direction_output(gpio + 3, 0);
+
+	gpio_request(gpio + 2, "pll_fs1");
+	gpio_direction_output(gpio + 2, 0);
+
+	gpio_request(gpio + 1, "pll_sr");
+	gpio_direction_output(gpio + 1, 0);
+
+	return 0;
+}
+
+static int
+evm_u18_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	gpio_free(gpio + 1);
+	gpio_free(gpio + 2);
+	gpio_free(gpio + 3);
+
+	if (sw_gpio > 0) {
+		device_remove_file(&client->dev, &dev_attr_user_sw);
+		gpio_free(sw_gpio);
+	}
+	return 0;
+}
+
+static struct pcf857x_platform_data pcf_data_u18 = {
+	.gpio_base	= PCF_Uxx_BASE(1),
+	.n_latch	= (1 << 3) | (1 << 2) | (1 << 1),
+	.setup		= evm_u18_setup,
+	.teardown	= evm_u18_teardown,
+};
+
+
+/* U35 - various I/O signals used to manage USB, CF, ATA, etc */
+
+static int
+evm_u35_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	/* p0 = nDRV_VBUS (initial:  don't supply it) */
+	gpio_request(gpio + 0, "nDRV_VBUS");
+	gpio_direction_output(gpio + 0, 1);
+
+	/* p1 = VDDIMX_EN */
+	gpio_request(gpio + 1, "VDDIMX_EN");
+	gpio_direction_output(gpio + 1, 1);
+
+	/* p2 = VLYNQ_EN */
+	gpio_request(gpio + 2, "VLYNQ_EN");
+	gpio_direction_output(gpio + 2, 1);
+
+	/* p3 = n3V3_CF_RESET (initial: stay in reset) */
+	gpio_request(gpio + 3, "nCF_RESET");
+	gpio_direction_output(gpio + 3, 0);
+
+	/* (p4 unused) */
+
+	/* p5 = 1V8_WLAN_RESET (initial: stay in reset) */
+	gpio_request(gpio + 5, "WLAN_RESET");
+	gpio_direction_output(gpio + 5, 1);
+
+	/* p6 = nATA_SEL (initial: select) */
+	gpio_request(gpio + 6, "nATA_SEL");
+	gpio_direction_output(gpio + 6, 0);
+
+	/* p7 = nCF_SEL (initial: deselect) */
+	gpio_request(gpio + 7, "nCF_SEL");
+	gpio_direction_output(gpio + 7, 1);
+
+	return 0;
+}
+
+static int
+evm_u35_teardown(struct i2c_client *client, int gpio, unsigned ngpio, void *c)
+{
+	gpio_free(gpio + 7);
+	gpio_free(gpio + 6);
+	gpio_free(gpio + 5);
+	gpio_free(gpio + 3);
+	gpio_free(gpio + 2);
+	gpio_free(gpio + 1);
+	gpio_free(gpio + 0);
+	return 0;
+}
+
+static struct pcf857x_platform_data pcf_data_u35 = {
+	.gpio_base	= PCF_Uxx_BASE(2),
+	.setup		= evm_u35_setup,
+	.teardown	= evm_u35_teardown,
+};
+
+/*----------------------------------------------------------------------*/
+
+/* Most of this EEPROM is unused, but U-Boot uses some data:
+ *  - 0x7f00, 6 bytes Ethernet Address
+ *  - 0x0039, 1 byte NTSC vs PAL (bit 0x80 == PAL)
+ *  - ... newer boards may have more
+ */
+
+static struct at24_platform_data eeprom_info = {
+	.byte_len	= (256*1024) / 8,
+	.page_size	= 64,
+	.flags		= AT24_FLAG_ADDR16,
+	.setup          = davinci_get_mac_addr,
+	.context	= (void *)0x7f00,
+};
+
+/*
+ * MSP430 supports RTC, card detection, input from IR remote, and