1 // SPDX-License-Identifier: GPL-2.0-or-later
7  * Copyright (C) 2011 - 2014 Intel Corporation. All rights reserved.
62 	mutex_lock(&adap->adap_lock);  in cht_wc_i2c_adap_thread_handler()
65 	ret = regmap_read(adap->regmap, CHT_WC_EXTCHGRIRQ, &reg);  in cht_wc_i2c_adap_thread_handler()
67 		dev_err(&adap->adapter.dev, "Error reading extchgrirq reg\n");  in cht_wc_i2c_adap_thread_handler()
68 		mutex_unlock(&adap->adap_lock);  in cht_wc_i2c_adap_thread_handler()
72 	reg &= ~adap->irq_mask;  in cht_wc_i2c_adap_thread_handler()
75 	ret = regmap_read(adap->regmap, CHT_WC_I2C_RDDATA, &adap->read_data);  in cht_wc_i2c_adap_thread_handler()
77 		adap->io_error = true;  in cht_wc_i2c_adap_thread_handler()
81 	 * handling the previous ones our irq will re-trigger when we're done.  in cht_wc_i2c_adap_thread_handler()
83 	ret = regmap_write(adap->regmap, CHT_WC_EXTCHGRIRQ, reg);  in cht_wc_i2c_adap_thread_handler()
85 		dev_err(&adap->adapter.dev, "Error writing extchgrirq reg\n");  in cht_wc_i2c_adap_thread_handler()
88 		adap->io_error |= !!(reg & CHT_WC_EXTCHGRIRQ_NACK_IRQ);  in cht_wc_i2c_adap_thread_handler()
89 		adap->done = true;  in cht_wc_i2c_adap_thread_handler()
92 	mutex_unlock(&adap->adap_lock);  in cht_wc_i2c_adap_thread_handler()
95 		wake_up(&adap->wait);  in cht_wc_i2c_adap_thread_handler()
104 		generic_handle_irq_safe(adap->client_irq);  in cht_wc_i2c_adap_thread_handler()
123 	mutex_lock(&adap->adap_lock);  in cht_wc_i2c_adap_smbus_xfer()
124 	adap->io_error = false;  in cht_wc_i2c_adap_smbus_xfer()
125 	adap->done = false;  in cht_wc_i2c_adap_smbus_xfer()
126 	mutex_unlock(&adap->adap_lock);  in cht_wc_i2c_adap_smbus_xfer()
128 	ret = regmap_write(adap->regmap, CHT_WC_I2C_CLIENT_ADDR, addr);  in cht_wc_i2c_adap_smbus_xfer()
133 		ret = regmap_write(adap->regmap, CHT_WC_I2C_WRDATA, data->byte);  in cht_wc_i2c_adap_smbus_xfer()
138 	ret = regmap_write(adap->regmap, CHT_WC_I2C_REG_OFFSET, command);  in cht_wc_i2c_adap_smbus_xfer()
142 	ret = regmap_write(adap->regmap, CHT_WC_I2C_CTRL,  in cht_wc_i2c_adap_smbus_xfer()
148 	ret = wait_event_timeout(adap->wait, adap->done, msecs_to_jiffies(30));  in cht_wc_i2c_adap_smbus_xfer()
155 		if (!adap->done)  in cht_wc_i2c_adap_smbus_xfer()
156 			return -ETIMEDOUT;  in cht_wc_i2c_adap_smbus_xfer()
160 	mutex_lock(&adap->adap_lock);  in cht_wc_i2c_adap_smbus_xfer()
161 	if (adap->io_error)  in cht_wc_i2c_adap_smbus_xfer()
162 		ret = -EIO;  in cht_wc_i2c_adap_smbus_xfer()
164 		data->byte = adap->read_data;  in cht_wc_i2c_adap_smbus_xfer()
165 	mutex_unlock(&adap->adap_lock);  in cht_wc_i2c_adap_smbus_xfer()
176  * We are an i2c-adapter which itself is part of an i2c-client. This means that
177  * transfers done through us take adapter->bus_lock twice, once for our parent
178  * i2c-adapter and once to take our own bus_lock. Lockdep does not like this
180  * i2c-core's i2c_adapter_lock_bus function calls:
181  * rt_mutex_lock_nested(&adapter->bus_lock, i2c_adapter_depth(adapter));
185  * i2c-client and MFD instantiated platform_device in the parent->child chain
192  * break things again since the i2c-mux code expects the root-adapter to have
199 	rt_mutex_lock_nested(&adapter->bus_lock, 1);  in cht_wc_i2c_adap_lock_bus()
205 	return rt_mutex_trylock(&adapter->bus_lock);  in cht_wc_i2c_adap_trylock_bus()
211 	rt_mutex_unlock(&adapter->bus_lock);  in cht_wc_i2c_adap_unlock_bus()
225 	mutex_lock(&adap->irqchip_lock);  in cht_wc_i2c_irq_lock()
233 	if (adap->irq_mask != adap->old_irq_mask) {  in cht_wc_i2c_irq_sync_unlock()
234 		ret = regmap_write(adap->regmap, CHT_WC_EXTCHGRIRQ_MSK,  in cht_wc_i2c_irq_sync_unlock()
235 				   adap->irq_mask);  in cht_wc_i2c_irq_sync_unlock()
237 			adap->old_irq_mask = adap->irq_mask;  in cht_wc_i2c_irq_sync_unlock()
239 			dev_err(&adap->adapter.dev, "Error writing EXTCHGRIRQ_MSK\n");  in cht_wc_i2c_irq_sync_unlock()
242 	mutex_unlock(&adap->irqchip_lock);  in cht_wc_i2c_irq_sync_unlock()
249 	adap->irq_mask &= ~CHT_WC_EXTCHGRIRQ_CLIENT_IRQ;  in cht_wc_i2c_irq_enable()
256 	adap->irq_mask |= CHT_WC_EXTCHGRIRQ_CLIENT_IRQ;  in cht_wc_i2c_irq_disable()
269 	"tcpm-source-psy-i2c-fusb302" };
272 	PROPERTY_ENTRY_STRING_ARRAY("supplied-from", bq24190_suppliers),
273 	PROPERTY_ENTRY_BOOL("omit-battery-class"),
274 	PROPERTY_ENTRY_BOOL("disable-reset"),
285 	.dev_name = "i2c-fusb302",
329 	PROPERTY_ENTRY_BOOL("linux,skip-reset"),
330 	PROPERTY_ENTRY_BOOL("linux,read-back-settings"),
346 /********** Lenovo Yogabook YB1-X90F/-X91F/-X91L charger settings **********/
350 	PROPERTY_ENTRY_STRING_ARRAY("supplied-from",
352 	PROPERTY_ENTRY_U32("linux,pump-express-vbus-max", 12000000),
353 	PROPERTY_ENTRY_BOOL("linux,skip-reset"),
356 	 * somewhat low charge-current of 2048mA and worse to a battery-voltage
358 	 * Use our own values instead of "linux,read-back-settings" to fix this.
360 	PROPERTY_ENTRY_U32("ti,charge-current", 4224000),
361 	PROPERTY_ENTRY_U32("ti,battery-regulation-voltage", 4352000),
362 	PROPERTY_ENTRY_U32("ti,termination-current", 256000),
363 	PROPERTY_ENTRY_U32("ti,precharge-current", 128000),
364 	PROPERTY_ENTRY_U32("ti,minimum-sys-voltage", 3500000),
365 	PROPERTY_ENTRY_U32("ti,boost-voltage", 4998000),
366 	PROPERTY_ENTRY_U32("ti,boost-max-current", 1400000),
367 	PROPERTY_ENTRY_BOOL("ti,use-ilim-pin"),
385 	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);  in cht_wc_i2c_adap_i2c_probe()
394 	adap = devm_kzalloc(&pdev->dev, sizeof(*adap), GFP_KERNEL);  in cht_wc_i2c_adap_i2c_probe()
396 		return -ENOMEM;  in cht_wc_i2c_adap_i2c_probe()
398 	init_waitqueue_head(&adap->wait);  in cht_wc_i2c_adap_i2c_probe()
399 	mutex_init(&adap->adap_lock);  in cht_wc_i2c_adap_i2c_probe()
400 	mutex_init(&adap->irqchip_lock);  in cht_wc_i2c_adap_i2c_probe()
401 	adap->irqchip = cht_wc_i2c_irq_chip;  in cht_wc_i2c_adap_i2c_probe()
402 	adap->regmap = pmic->regmap;  in cht_wc_i2c_adap_i2c_probe()
403 	adap->adapter.owner = THIS_MODULE;  in cht_wc_i2c_adap_i2c_probe()
404 	adap->adapter.class = I2C_CLASS_HWMON;  in cht_wc_i2c_adap_i2c_probe()
405 	adap->adapter.algo = &cht_wc_i2c_adap_algo;  in cht_wc_i2c_adap_i2c_probe()
406 	adap->adapter.lock_ops = &cht_wc_i2c_adap_lock_ops;  in cht_wc_i2c_adap_i2c_probe()
407 	strscpy(adap->adapter.name, "PMIC I2C Adapter",  in cht_wc_i2c_adap_i2c_probe()
408 		sizeof(adap->adapter.name));  in cht_wc_i2c_adap_i2c_probe()
409 	adap->adapter.dev.parent = &pdev->dev;  in cht_wc_i2c_adap_i2c_probe()
411 	/* Clear and activate i2c-adapter interrupts, disable client IRQ */  in cht_wc_i2c_adap_i2c_probe()
412 	adap->old_irq_mask = adap->irq_mask = ~CHT_WC_EXTCHGRIRQ_ADAP_IRQMASK;  in cht_wc_i2c_adap_i2c_probe()
414 	ret = regmap_read(adap->regmap, CHT_WC_I2C_RDDATA, &reg);  in cht_wc_i2c_adap_i2c_probe()
418 	ret = regmap_write(adap->regmap, CHT_WC_EXTCHGRIRQ, ~adap->irq_mask);  in cht_wc_i2c_adap_i2c_probe()
422 	ret = regmap_write(adap->regmap, CHT_WC_EXTCHGRIRQ_MSK, adap->irq_mask);  in cht_wc_i2c_adap_i2c_probe()
427 	adap->irq_domain = irq_domain_add_linear(NULL, 1, &irq_domain_simple_ops, NULL);  in cht_wc_i2c_adap_i2c_probe()
428 	if (!adap->irq_domain)  in cht_wc_i2c_adap_i2c_probe()
429 		return -ENOMEM;  in cht_wc_i2c_adap_i2c_probe()
431 	adap->client_irq = irq_create_mapping(adap->irq_domain, 0);  in cht_wc_i2c_adap_i2c_probe()
432 	if (!adap->client_irq) {  in cht_wc_i2c_adap_i2c_probe()
433 		ret = -ENOMEM;  in cht_wc_i2c_adap_i2c_probe()
437 	irq_set_chip_data(adap->client_irq, adap);  in cht_wc_i2c_adap_i2c_probe()
438 	irq_set_chip_and_handler(adap->client_irq, &adap->irqchip,  in cht_wc_i2c_adap_i2c_probe()
441 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,  in cht_wc_i2c_adap_i2c_probe()
447 	i2c_set_adapdata(&adap->adapter, adap);  in cht_wc_i2c_adap_i2c_probe()
448 	ret = i2c_add_adapter(&adap->adapter);  in cht_wc_i2c_adap_i2c_probe()
452 	switch (pmic->cht_wc_model) {  in cht_wc_i2c_adap_i2c_probe()
463 		dev_warn(&pdev->dev, "Unknown model, not instantiating charger device\n");  in cht_wc_i2c_adap_i2c_probe()
468 		board_info->irq = adap->client_irq;  in cht_wc_i2c_adap_i2c_probe()
469 		adap->client = i2c_new_client_device(&adap->adapter, board_info);  in cht_wc_i2c_adap_i2c_probe()
470 		if (IS_ERR(adap->client)) {  in cht_wc_i2c_adap_i2c_probe()
471 			ret = PTR_ERR(adap->client);  in cht_wc_i2c_adap_i2c_probe()
480 	i2c_del_adapter(&adap->adapter);  in cht_wc_i2c_adap_i2c_probe()
482 	irq_domain_remove(adap->irq_domain);  in cht_wc_i2c_adap_i2c_probe()
490 	i2c_unregister_device(adap->client);  in cht_wc_i2c_adap_i2c_remove()
491 	i2c_del_adapter(&adap->adapter);  in cht_wc_i2c_adap_i2c_remove()
492 	irq_domain_remove(adap->irq_domain);  in cht_wc_i2c_adap_i2c_remove()