1 // SPDX-License-Identifier: GPL-2.0+
3 // silicom-platform.c - Silicom MEC170x platform driver
5 // Copyright (C) 2023 Henry Shi <henrys@silicom-usa.com>
15 #include <linux/led-class-multicolor.h>
52 #define CHANNEL_TO_OFFSET(chan) (((chan) >> 3) - 0x14)
201 	enum led_brightness brightness = LED_OFF;  in silicom_mec_led_mc_brightness_get()  local
204 	for (i = 0; i < mc_cdev->num_colors; i++) {  in silicom_mec_led_mc_brightness_get()
205 		mc_cdev->subled_info[i].brightness =  in silicom_mec_led_mc_brightness_get()
206 			silicom_mec_led_get(mc_cdev->subled_info[i].channel);  in silicom_mec_led_mc_brightness_get()
207 		/* Mark the overall brightness as LED_ON if any of the subleds are on */  in silicom_mec_led_mc_brightness_get()
208 		if (mc_cdev->subled_info[i].brightness != LED_OFF)  in silicom_mec_led_mc_brightness_get()
209 			brightness = LED_ON;  in silicom_mec_led_mc_brightness_get()
212 	return brightness;  in silicom_mec_led_mc_brightness_get()
216 					      enum led_brightness brightness)  in silicom_mec_led_mc_brightness_set()  argument
221 	led_mc_calc_color_components(mc_cdev, brightness);  in silicom_mec_led_mc_brightness_set()
222 	for (i = 0; i < mc_cdev->num_colors; i++) {  in silicom_mec_led_mc_brightness_set()
223 		silicom_mec_port_set(mc_cdev->subled_info[i].channel,  in silicom_mec_led_mc_brightness_set()
224 				     mc_cdev->subled_info[i].brightness);  in silicom_mec_led_mc_brightness_set()
245 	return direction == GPIO_LINE_DIRECTION_IN ? 0 : -EINVAL;  in silicom_gpio_direction_input()
274 		return -EINVAL;  in silicom_gpio_direction_output()
292 		.brightness = 1,
298 		.brightness = 1,
304 		.brightness = 1,
313 		.brightness = 1,
319 		.brightness = 1,
325 		.brightness = 1,
334 		.brightness = 1,
340 		.brightness = 1,
346 		.brightness = 1,
352 		.brightness = 1,
361 		.brightness = 1,
367 		.brightness = 1,
373 		.brightness = 1,
379 		.brightness = 1,
388 		.brightness = 1,
394 		.brightness = 1,
400 		.brightness = 1,
406 		.brightness = 1,
416 			.brightness = 0,
427 			.brightness = 0,
438 			.brightness = 0,
449 			.brightness = 0,
460 			.brightness = 0,
472 	.label = "silicom-gpio",
478 	.base = -1,
506 		.brightness = 1,
512 		.brightness = 1,
518 		.brightness = 1,
524 		.brightness = 1,
533 		.brightness = 1,
539 		.brightness = 1,
545 		.brightness = 1,
551 		.brightness = 1,
560 		.brightness = 1,
566 		.brightness = 1,
572 		.brightness = 1,
578 		.brightness = 1,
588 			.brightness = 0,
599 			.brightness = 0,
610 			.brightness = 0,
669 		return -EINVAL;  in uc_version_show()
706 		return -EINVAL;  in power_cycle_store()
729 		.name = "silicom-platform",
745 			return -ENOMEM;  in silicom_mc_leds_register()
748 		led->subled_info = devm_kzalloc(dev, led->num_colors * size, GFP_KERNEL);  in silicom_mc_leds_register()
749 		if (!led->subled_info)  in silicom_mc_leds_register()
750 			return -ENOMEM;  in silicom_mc_leds_register()
751 		memcpy(led->subled_info, mc_leds[i].subled_info, led->num_colors * size);  in silicom_mc_leds_register()
795 	default:  in silicom_fan_control_fan_is_visible()
806 	default:  in silicom_fan_control_temp_is_visible()
817 	default:  in silicom_fan_control_read_fan()
818 		return -EOPNOTSUPP;  in silicom_fan_control_read_fan()
828 	default:  in silicom_fan_control_read_temp()
829 		return -EOPNOTSUPP;  in silicom_fan_control_read_temp()
842 	default:  in silicom_fan_control_is_visible()
857 	default:  in silicom_fan_control_read()
858 		return -EOPNOTSUPP;  in silicom_fan_control_read()
874 	default:  in silicom_fan_control_read_labels()
875 		return -EOPNOTSUPP;  in silicom_fan_control_read_labels()
896 	if (!devm_request_region(&device->dev, MEC_IO_BASE, MEC_IO_LEN, "mec")) {  in silicom_platform_probe()
897 		dev_err(&device->dev, "couldn't reserve MEC io ports\n");  in silicom_platform_probe()
898 		return -EBUSY;  in silicom_platform_probe()
905 	dev_dbg(&device->dev, "EC magic 0x%02x, version 0x%02x\n", magic, ver);  in silicom_platform_probe()
908 		dev_err(&device->dev, "Bad EC magic 0x%02x!\n", magic);  in silicom_platform_probe()
909 		return -ENODEV;  in silicom_platform_probe()
912 	err = silicom_mc_leds_register(&device->dev, silicom_led_info);  in silicom_platform_probe()
914 		dev_err(&device->dev, "Failed to register LEDs\n");  in silicom_platform_probe()
918 	err = devm_gpiochip_add_data(&device->dev, silicom_gpiochip,  in silicom_platform_probe()
921 		dev_err(&device->dev, "Failed to register gpiochip: %d\n", err);  in silicom_platform_probe()
925 	hwmon_dev = devm_hwmon_device_register_with_info(&device->dev, "silicom_fan", NULL,  in silicom_platform_probe()
929 		dev_err(&device->dev, "Failed to register hwmon_dev: %d\n", err);  in silicom_platform_probe()
938 	struct silicom_platform_info *info = id->driver_data;  in silicom_platform_info_init()
940 	silicom_led_info = info->led_info;  in silicom_platform_info_init()
941 	silicom_gpio_channels = info->gpio_channels;  in silicom_platform_info_init()
942 	silicom_gpiochip = info->gpiochip;  in silicom_platform_info_init()
943 	silicom_gpiochip->ngpio = info->ngpio;  in silicom_platform_info_init()
954 			DMI_MATCH(DMI_BOARD_NAME, "80300-0214-G"),
963 			DMI_MATCH(DMI_BOARD_NAME, "80500-0214-G"),
972 			DMI_MATCH(DMI_BOARD_NAME, "80300-0222-G"),
984 		return -ENODEV;  in silicom_platform_init()
1003 MODULE_AUTHOR("Henry Shi <henrys@silicom-usa.com>");