1 // SPDX-License-Identifier: GPL-2.0-only
9 #include <linux/mfd/qnap-mcu.h>
27 	u8 mode;  member
40 	u8 cmd[] = { '@', 'R', '0' + err_led->num, '0' };  in qnap_mcu_err_led_set()
42 	/* Don't disturb a possible set blink-mode if LED stays on */  in qnap_mcu_err_led_set()
43 	if (brightness != 0 && err_led->mode >= QNAP_MCU_ERR_LED_BLINK_FAST)  in qnap_mcu_err_led_set()
46 	err_led->mode = brightness ? QNAP_MCU_ERR_LED_ON : QNAP_MCU_ERR_LED_OFF;  in qnap_mcu_err_led_set()
47 	cmd[3] = '0' + err_led->mode;  in qnap_mcu_err_led_set()
49 	return qnap_mcu_exec_with_ack(err_led->mcu, cmd, sizeof(cmd));  in qnap_mcu_err_led_set()
57 	u8 cmd[] = { '@', 'R', '0' + err_led->num, '0' };  in qnap_mcu_err_led_blink_set()
59 	/* LED is off, nothing to do */  in qnap_mcu_err_led_blink_set()
60 	if (err_led->mode == QNAP_MCU_ERR_LED_OFF)  in qnap_mcu_err_led_blink_set()
66 		err_led->mode = QNAP_MCU_ERR_LED_BLINK_FAST;  in qnap_mcu_err_led_blink_set()
70 		err_led->mode = QNAP_MCU_ERR_LED_BLINK_SLOW;  in qnap_mcu_err_led_blink_set()
73 	cmd[3] = '0' + err_led->mode;  in qnap_mcu_err_led_blink_set()
75 	return qnap_mcu_exec_with_ack(err_led->mcu, cmd, sizeof(cmd));  in qnap_mcu_err_led_blink_set()
85 		return -ENOMEM;  in qnap_mcu_register_err_led()
87 	err_led->mcu = mcu;  in qnap_mcu_register_err_led()
88 	err_led->num = num_err_led;  in qnap_mcu_register_err_led()
89 	err_led->mode = QNAP_MCU_ERR_LED_OFF;  in qnap_mcu_register_err_led()
91 	scnprintf(err_led->name, LED_MAX_NAME_SIZE, "hdd%d:red:status", num_err_led + 1);  in qnap_mcu_register_err_led()
92 	err_led->cdev.name = err_led->name;  in qnap_mcu_register_err_led()
94 	err_led->cdev.brightness_set_blocking = qnap_mcu_err_led_set;  in qnap_mcu_register_err_led()
95 	err_led->cdev.blink_set = qnap_mcu_err_led_blink_set;  in qnap_mcu_register_err_led()
96 	err_led->cdev.brightness = 0;  in qnap_mcu_register_err_led()
97 	err_led->cdev.max_brightness = 1;  in qnap_mcu_register_err_led()
99 	ret = devm_led_classdev_register(dev, &err_led->cdev);  in qnap_mcu_register_err_led()
103 	return qnap_mcu_err_led_set(&err_led->cdev, 0);  in qnap_mcu_register_err_led()
115 	u8 mode;  member
130 	/* Don't disturb a possible set blink-mode if LED stays on */  in qnap_mcu_usb_led_set()
131 	if (brightness != 0 && usb_led->mode == QNAP_MCU_USB_LED_BLINK)  in qnap_mcu_usb_led_set()
134 	usb_led->mode = brightness ? QNAP_MCU_USB_LED_ON : QNAP_MCU_USB_LED_OFF;  in qnap_mcu_usb_led_set()
137 	 * Byte 3 is shared between the usb led target on/off/blink  in qnap_mcu_usb_led_set()
140 	cmd[2] = 'D' + usb_led->mode;  in qnap_mcu_usb_led_set()
142 	return qnap_mcu_exec_with_ack(usb_led->mcu, cmd, sizeof(cmd));  in qnap_mcu_usb_led_set()
152 	/* LED is off, nothing to do */  in qnap_mcu_usb_led_blink_set()
153 	if (usb_led->mode == QNAP_MCU_USB_LED_OFF)  in qnap_mcu_usb_led_blink_set()
158 	usb_led->mode = QNAP_MCU_USB_LED_BLINK;  in qnap_mcu_usb_led_blink_set()
161 	 * Byte 3 is shared between the USB LED target on/off/blink  in qnap_mcu_usb_led_blink_set()
164 	cmd[2] = 'D' + usb_led->mode;  in qnap_mcu_usb_led_blink_set()
166 	return qnap_mcu_exec_with_ack(usb_led->mcu, cmd, sizeof(cmd));  in qnap_mcu_usb_led_blink_set()
176 		return -ENOMEM;  in qnap_mcu_register_usb_led()
178 	usb_led->mcu = mcu;  in qnap_mcu_register_usb_led()
179 	usb_led->mode = QNAP_MCU_USB_LED_OFF;  in qnap_mcu_register_usb_led()
180 	usb_led->cdev.name = "usb:blue:disk";  in qnap_mcu_register_usb_led()
181 	usb_led->cdev.brightness_set_blocking = qnap_mcu_usb_led_set;  in qnap_mcu_register_usb_led()
182 	usb_led->cdev.blink_set = qnap_mcu_usb_led_blink_set;  in qnap_mcu_register_usb_led()
183 	usb_led->cdev.brightness = 0;  in qnap_mcu_register_usb_led()
184 	usb_led->cdev.max_brightness = 1;  in qnap_mcu_register_usb_led()
186 	ret = devm_led_classdev_register(dev, &usb_led->cdev);  in qnap_mcu_register_usb_led()
190 	return qnap_mcu_usb_led_set(&usb_led->cdev, 0);  in qnap_mcu_register_usb_led()
195 	struct qnap_mcu *mcu = dev_get_drvdata(pdev->dev.parent);  in qnap_mcu_leds_probe()
196 	const struct qnap_mcu_variant *variant = pdev->dev.platform_data;  in qnap_mcu_leds_probe()
199 	for (int i = 0; i < variant->num_drives; i++) {  in qnap_mcu_leds_probe()
200 		ret = qnap_mcu_register_err_led(&pdev->dev, mcu, i);  in qnap_mcu_leds_probe()
202 			return dev_err_probe(&pdev->dev, ret,  in qnap_mcu_leds_probe()
203 					"failed to register error LED %d\n", i);  in qnap_mcu_leds_probe()
206 	if (variant->usb_led) {  in qnap_mcu_leds_probe()
207 		ret = qnap_mcu_register_usb_led(&pdev->dev, mcu);  in qnap_mcu_leds_probe()
209 			return dev_err_probe(&pdev->dev, ret,  in qnap_mcu_leds_probe()
210 					"failed to register USB LED\n");  in qnap_mcu_leds_probe()
219 		.name = "qnap-mcu-leds",
224 MODULE_ALIAS("platform:qnap-mcu-leds");