1 // SPDX-License-Identifier: GPL-2.0
9 #include <linux/led-class-multicolor.h>
33 #define OMNIA_CMD_LED_COLOR_R		2
56 	struct omnia_leds *leds = dev_get_drvdata(cdev->dev->parent);  in omnia_led_brightness_set_blocking()
57 	struct omnia_led *led = to_omnia_led(mc_cdev);  in omnia_led_brightness_set_blocking()  local
61 	mutex_lock(&leds->lock);  in omnia_led_brightness_set_blocking()
63 	led_mc_calc_color_components(&led->mc_cdev, brightness);  in omnia_led_brightness_set_blocking()
66 	buf[OMNIA_CMD_LED_COLOR_LED] = led->reg;  in omnia_led_brightness_set_blocking()
67 	buf[OMNIA_CMD_LED_COLOR_R] = mc_cdev->subled_info[0].brightness;  in omnia_led_brightness_set_blocking()
68 	buf[OMNIA_CMD_LED_COLOR_G] = mc_cdev->subled_info[1].brightness;  in omnia_led_brightness_set_blocking()
69 	buf[OMNIA_CMD_LED_COLOR_B] = mc_cdev->subled_info[2].brightness;  in omnia_led_brightness_set_blocking()
71 	state = CMD_LED_STATE_LED(led->reg);  in omnia_led_brightness_set_blocking()
75 	ret = i2c_smbus_write_byte_data(leds->client, CMD_LED_STATE, state);  in omnia_led_brightness_set_blocking()
77 		ret = i2c_master_send(leds->client, buf, 5);  in omnia_led_brightness_set_blocking()
79 	mutex_unlock(&leds->lock);  in omnia_led_brightness_set_blocking()
84 static int omnia_led_register(struct i2c_client *client, struct omnia_led *led,  in omnia_led_register()  argument
88 	struct device *dev = &client->dev;  in omnia_led_register()
92 	ret = of_property_read_u32(np, "reg", &led->reg);  in omnia_led_register()
93 	if (ret || led->reg >= OMNIA_BOARD_LEDS) {  in omnia_led_register()
96 			 np, OMNIA_BOARD_LEDS - 1);  in omnia_led_register()
108 	led->subled_info[0].color_index = LED_COLOR_ID_RED;  in omnia_led_register()
109 	led->subled_info[0].channel = 0;  in omnia_led_register()
110 	led->subled_info[1].color_index = LED_COLOR_ID_GREEN;  in omnia_led_register()
111 	led->subled_info[1].channel = 1;  in omnia_led_register()
112 	led->subled_info[2].color_index = LED_COLOR_ID_BLUE;  in omnia_led_register()
113 	led->subled_info[2].channel = 2;  in omnia_led_register()
115 	led->mc_cdev.subled_info = led->subled_info;  in omnia_led_register()
116 	led->mc_cdev.num_colors = OMNIA_LED_NUM_CHANNELS;  in omnia_led_register()
118 	init_data.fwnode = &np->fwnode;  in omnia_led_register()
120 	cdev = &led->mc_cdev.led_cdev;  in omnia_led_register()
121 	cdev->max_brightness = 255;  in omnia_led_register()
122 	cdev->brightness_set_blocking = omnia_led_brightness_set_blocking;  in omnia_led_register()
124 	/* put the LED into software mode */  in omnia_led_register()
126 					CMD_LED_MODE_LED(led->reg) |  in omnia_led_register()
129 		dev_err(dev, "Cannot set LED %pOF to software mode: %i\n", np, ret);  in omnia_led_register()
133 	/* disable the LED */  in omnia_led_register()
134 	ret = i2c_smbus_write_byte_data(client, CMD_LED_STATE, CMD_LED_STATE_LED(led->reg));  in omnia_led_register()
136 		dev_err(dev, "Cannot set LED %pOF brightness: %i\n", np, ret);  in omnia_led_register()
140 	ret = devm_led_classdev_multicolor_register_ext(dev, &led->mc_cdev, &init_data);  in omnia_led_register()
142 		dev_err(dev, "Cannot register LED %pOF: %i\n", np, ret);  in omnia_led_register()
157  * file lives in the device directory of the LED controller, not an individual
158  * LED, so it should not confuse users.
166 	mutex_lock(&leds->lock);  in brightness_show()
168 	mutex_unlock(&leds->lock);  in brightness_show()
185 		return -EINVAL;  in brightness_store()
188 		return -EINVAL;  in brightness_store()
190 	mutex_lock(&leds->lock);  in brightness_store()
192 	mutex_unlock(&leds->lock);  in brightness_store()
210 	struct device *dev = &client->dev;  in omnia_leds_probe()
213 	struct omnia_led *led;  in omnia_leds_probe()  local
219 		return -ENODEV;  in omnia_leds_probe()
222 		return -EINVAL;  in omnia_leds_probe()
227 		return -ENOMEM;  in omnia_leds_probe()
229 	leds->client = client;  in omnia_leds_probe()
232 	mutex_init(&leds->lock);  in omnia_leds_probe()
234 	led = &leds->leds[0];  in omnia_leds_probe()
236 		ret = omnia_led_register(client, led, child);  in omnia_leds_probe()
242 		led += ret;  in omnia_leds_probe()
272 	{ .compatible = "cznic,turris-omnia-leds", },
287 		.name	= "leds-turris-omnia",