1 // SPDX-License-Identifier: GPL-2.0-only
3  * Windfarm PowerMac thermal control. LM75 sensor
43 static int wf_lm75_get(struct wf_sensor *sr, s32 *value)  in wf_lm75_get()  argument
45 	struct wf_lm75_sensor *lm = wf_to_lm75(sr);  in wf_lm75_get()
48 	if (lm->i2c == NULL)  in wf_lm75_get()
49 		return -ENODEV;  in wf_lm75_get()
52 	if (!lm->inited) {  in wf_lm75_get()
53 		u8 cfg_new, cfg = (u8)i2c_smbus_read_byte_data(lm->i2c, 1);  in wf_lm75_get()
56 		    sr->name, cfg);  in wf_lm75_get()
62 		i2c_smbus_write_byte_data(lm->i2c, 1, cfg_new);  in wf_lm75_get()
63 		lm->inited = 1;  in wf_lm75_get()
70 	data = (s32)le16_to_cpu(i2c_smbus_read_word_data(lm->i2c, 0));  in wf_lm75_get()
77 static void wf_lm75_release(struct wf_sensor *sr)  in wf_lm75_release()  argument
79 	struct wf_lm75_sensor *lm = wf_to_lm75(sr);  in wf_lm75_release()
98 		ds1775 = id->driver_data;  in wf_lm75_probe()
100 		ds1775 = !!of_device_get_match_data(&client->dev);  in wf_lm75_probe()
103 	    ds1775 ? "ds1775" : "lm75", client->addr);  in wf_lm75_probe()
105 	loc = of_get_property(client->dev.of_node, "hwsensor-location", NULL);  in wf_lm75_probe()
107 		dev_warn(&client->dev, "Missing hwsensor-location property!\n");  in wf_lm75_probe()
108 		return -ENXIO;  in wf_lm75_probe()
112 	 * the device-tree, oh well ...  in wf_lm75_probe()
116 		name = "hd-temp";  in wf_lm75_probe()
118 		name = "incoming-air-temp";  in wf_lm75_probe()
120 		name = "optical-drive-temp";  in wf_lm75_probe()
122 		name = "hard-drive-temp";  in wf_lm75_probe()
124 		name = "slots-temp";  in wf_lm75_probe()
126 		name = "cpu-inlet-temp-0";  in wf_lm75_probe()
128 		name = "cpu-inlet-temp-1";  in wf_lm75_probe()
130 		return -ENXIO;  in wf_lm75_probe()
135 		return -ENODEV;  in wf_lm75_probe()
137 	lm->inited = 0;  in wf_lm75_probe()
138 	lm->ds1775 = ds1775;  in wf_lm75_probe()
139 	lm->i2c = client;  in wf_lm75_probe()
140 	lm->sens.name = name;  in wf_lm75_probe()
141 	lm->sens.ops = &wf_lm75_ops;  in wf_lm75_probe()
144 	rc = wf_register_sensor(&lm->sens);  in wf_lm75_probe()
155 	lm->i2c = NULL;  in wf_lm75_remove()
158 	wf_unregister_sensor(&lm->sens);  in wf_lm75_remove()
188 MODULE_DESCRIPTION("LM75 sensor objects for PowerMacs thermal control");