3  * Lochnagar I2C bus interface
23 #include <linux/mfd/lochnagar.h>
227  * @lochnagar: A pointer to the primary core data structure.
231 int lochnagar_update_config(struct lochnagar *lochnagar)  in lochnagar_update_config()  argument
233 	struct regmap *regmap = lochnagar->regmap;  in lochnagar_update_config()
239 	lockdep_assert_held(&lochnagar->analogue_config_lock);  in lochnagar_update_config()
241 	if (lochnagar->type != LOCHNAGAR2)  in lochnagar_update_config()
273 	struct lochnagar *lochnagar;  in lochnagar_i2c_probe()  local
280 	lochnagar = devm_kzalloc(dev, sizeof(*lochnagar), GFP_KERNEL);  in lochnagar_i2c_probe()
281 	if (!lochnagar)  in lochnagar_i2c_probe()
286 	lochnagar->dev = dev;  in lochnagar_i2c_probe()
287 	mutex_init(&lochnagar->analogue_config_lock);  in lochnagar_i2c_probe()
289 	dev_set_drvdata(dev, lochnagar);  in lochnagar_i2c_probe()
305 	/* Leave the Lochnagar in reset for a reasonable amount of time */  in lochnagar_i2c_probe()
308 	/* Bring Lochnagar out of reset */  in lochnagar_i2c_probe()
311 	/* Identify Lochnagar */  in lochnagar_i2c_probe()
312 	lochnagar->type = config->type;  in lochnagar_i2c_probe()
314 	lochnagar->regmap = devm_regmap_init_i2c(i2c, config->regmap);  in lochnagar_i2c_probe()
315 	if (IS_ERR(lochnagar->regmap)) {  in lochnagar_i2c_probe()
316 		ret = PTR_ERR(lochnagar->regmap);  in lochnagar_i2c_probe()
321 	/* Wait for Lochnagar to boot */  in lochnagar_i2c_probe()
322 	ret = lochnagar_wait_for_boot(lochnagar->regmap, &val);  in lochnagar_i2c_probe()
339 	ret = regmap_read(lochnagar->regmap, LOCHNAGAR_FIRMWARE_ID1, &val);  in lochnagar_i2c_probe()
347 	ret = regmap_read(lochnagar->regmap, LOCHNAGAR_FIRMWARE_ID2, &val);  in lochnagar_i2c_probe()
358 	ret = regmap_register_patch(lochnagar->regmap, config->patch,  in lochnagar_i2c_probe()
376 		.name = "lochnagar",
389 		pr_err("Failed to register Lochnagar driver: %d\n", ret);  in lochnagar_i2c_init()