1 // SPDX-License-Identifier: GPL-2.0
3  * MFD core driver for Intel Cherrytrail Whiskey Cove PMIC
7  * Based on various non upstream patches to support the CHT Whiskey Cove PMIC:
8  * Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
22 /* PMIC device registers */
30 /* Whiskey Cove PMIC share same ACPI ID between different platforms */
76 	int ret, orig_addr = client->addr;  in cht_wc_byte_reg_read()
79 		dev_err(&client->dev, "Error I2C address not specified\n");  in cht_wc_byte_reg_read()
80 		return -EINVAL;  in cht_wc_byte_reg_read()
83 	client->addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;  in cht_wc_byte_reg_read()
85 	client->addr = orig_addr;  in cht_wc_byte_reg_read()
98 	int ret, orig_addr = client->addr;  in cht_wc_byte_reg_write()
101 		dev_err(&client->dev, "Error I2C address not specified\n");  in cht_wc_byte_reg_write()
102 		return -EINVAL;  in cht_wc_byte_reg_write()
105 	client->addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;  in cht_wc_byte_reg_write()
107 	client->addr = orig_addr;  in cht_wc_byte_reg_write()
144 		 * DMI decode dumps from linux-hardware.org only 116 have
167 			DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
174 			DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
177 		/* Lenovo Yoga Tab 3 Pro YT3-X90F */
181 			DMI_MATCH(DMI_PRODUCT_VERSION, "Blade3-10A-001"),
189 	struct device *dev = &client->dev;  in cht_wc_probe()
191 	struct intel_soc_pmic *pmic;  in cht_wc_probe()  local
198 		return dev_err_probe(dev, -ENODEV, "Failed to get PMIC hardware revision\n");  in cht_wc_probe()
200 		return dev_err_probe(dev, -ENODEV, "Invalid PMIC hardware revision: %llu\n", hrv);  in cht_wc_probe()
202 	if (client->irq < 0)  in cht_wc_probe()
203 		return dev_err_probe(dev, -EINVAL, "Invalid IRQ\n");  in cht_wc_probe()
205 	pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL);  in cht_wc_probe()
206 	if (!pmic)  in cht_wc_probe()
207 		return -ENOMEM;  in cht_wc_probe()
211 		pmic->cht_wc_model = (long)id->driver_data;  in cht_wc_probe()
213 	pmic->irq = client->irq;  in cht_wc_probe()
214 	pmic->dev = dev;  in cht_wc_probe()
215 	i2c_set_clientdata(client, pmic);  in cht_wc_probe()
217 	pmic->regmap = devm_regmap_init(dev, NULL, client, &cht_wc_regmap_cfg);  in cht_wc_probe()
218 	if (IS_ERR(pmic->regmap))  in cht_wc_probe()
219 		return PTR_ERR(pmic->regmap);  in cht_wc_probe()
221 	ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq,  in cht_wc_probe()
224 				       &pmic->irq_chip_data);  in cht_wc_probe()
230 				regmap_irq_get_domain(pmic->irq_chip_data));  in cht_wc_probe()
235 	struct intel_soc_pmic *pmic = i2c_get_clientdata(client);  in cht_wc_shutdown()  local
237 	disable_irq(pmic->irq);  in cht_wc_shutdown()
242 	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);  in cht_wc_suspend()  local
244 	disable_irq(pmic->irq);  in cht_wc_suspend()
251 	struct intel_soc_pmic *pmic = dev_get_drvdata(dev);  in cht_wc_resume()  local
253 	enable_irq(pmic->irq);  in cht_wc_resume()