1 // SPDX-License-Identifier: GPL-2.0
3  * PFSM (Pre-configurable Finite State Machine) driver for TI TPS65224/TPS6594/TPS6593/LP8764 PMICs
5  * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
35 #define TPS6594_FILE_TO_PFSM(f) container_of((f)->private_data, struct tps6594_pfsm, miscdev)
38  * struct tps6594_pfsm - device private data structure
60 		return -EINVAL;  in tps6594_pfsm_read()
63 	if (count > TPS6594_PMIC_MAX_POS - pos)  in tps6594_pfsm_read()
64 		count = TPS6594_PMIC_MAX_POS - pos;  in tps6594_pfsm_read()
67 		ret = regmap_read(pfsm->regmap, pos + i, &val);  in tps6594_pfsm_read()
72 			return -EFAULT;  in tps6594_pfsm_read()
90 		return -EINVAL;  in tps6594_pfsm_write()
93 	if (count > TPS6594_PMIC_MAX_POS - pos)  in tps6594_pfsm_write()
94 		count = TPS6594_PMIC_MAX_POS - pos;  in tps6594_pfsm_write()
98 			return -EFAULT;  in tps6594_pfsm_write()
100 		ret = regmap_write(pfsm->regmap, pos + i, val);  in tps6594_pfsm_write()
139 	int ret = -ENOIOCTLCMD;  in tps6594_pfsm_ioctl()
144 		if (pfsm->chip_id != TPS65224) {  in tps6594_pfsm_ioctl()
145 			ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,  in tps6594_pfsm_ioctl()
153 		ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_FSM_I2C_TRIGGERS,  in tps6594_pfsm_ioctl()
158 		if (pfsm->chip_id == TPS65224)  in tps6594_pfsm_ioctl()
162 		ret = regmap_set_bits(pfsm->regmap, TPS6594_REG_RTC_CTRL_2,  in tps6594_pfsm_ioctl()
168 		ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_FSM_I2C_TRIGGERS,  in tps6594_pfsm_ioctl()
173 		ret = regmap_write_bits(pfsm->regmap, TPS6594_REG_FSM_I2C_TRIGGERS,  in tps6594_pfsm_ioctl()
177 		/* Modify NSLEEP1-2 bits */  in tps6594_pfsm_ioctl()
178 		ret = regmap_set_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS,  in tps6594_pfsm_ioctl()
183 		if (pfsm->chip_id == TPS65224)  in tps6594_pfsm_ioctl()
187 			return -EFAULT;  in tps6594_pfsm_ioctl()
190 		ret = tps6594_pfsm_configure_ret_trig(pfsm->regmap, state_opt.gpio_retention,  in tps6594_pfsm_ioctl()
195 		/* Modify NSLEEP1-2 bits */  in tps6594_pfsm_ioctl()
196 		ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS,  in tps6594_pfsm_ioctl()
201 		ret = regmap_set_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS,  in tps6594_pfsm_ioctl()
206 			return -EFAULT;  in tps6594_pfsm_ioctl()
208 		/* Configure wake-up destination */  in tps6594_pfsm_ioctl()
209 		if (pfsm->chip_id == TPS65224) {  in tps6594_pfsm_ioctl()
218 			ret = regmap_write_bits(pfsm->regmap, regmap_reg,  in tps6594_pfsm_ioctl()
221 			ret = regmap_write_bits(pfsm->regmap, regmap_reg,  in tps6594_pfsm_ioctl()
227 		ret = tps6594_pfsm_configure_ret_trig(pfsm->regmap, state_opt.gpio_retention,  in tps6594_pfsm_ioctl()
232 		/* Modify NSLEEP1-2 bits */  in tps6594_pfsm_ioctl()
233 		ret = regmap_clear_bits(pfsm->regmap, TPS6594_REG_FSM_NSLEEP_TRIGGERS,  in tps6594_pfsm_ioctl()
234 					pfsm->chip_id == TPS65224 ?  in tps6594_pfsm_ioctl()
256 	for (i = 0 ; i < pdev->num_resources ; i++) {  in tps6594_pfsm_isr()
257 		if (irq == platform_get_irq_byname(pdev, pdev->resource[i].name)) {  in tps6594_pfsm_isr()
258 			dev_err(pdev->dev.parent, "%s event detected\n", pdev->resource[i].name);  in tps6594_pfsm_isr()
269 	struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent);  in tps6594_pfsm_probe()
270 	struct device *dev = &pdev->dev;  in tps6594_pfsm_probe()
277 		return -ENOMEM;  in tps6594_pfsm_probe()
279 	pfsm->regmap = tps->regmap;  in tps6594_pfsm_probe()
281 	pfsm->miscdev.minor = MISC_DYNAMIC_MINOR;  in tps6594_pfsm_probe()
282 	pfsm->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "pfsm-%ld-0x%02x",  in tps6594_pfsm_probe()
283 					    tps->chip_id, tps->reg);  in tps6594_pfsm_probe()
284 	pfsm->miscdev.fops = &tps6594_pfsm_fops;  in tps6594_pfsm_probe()
285 	pfsm->miscdev.parent = dev->parent;  in tps6594_pfsm_probe()
286 	pfsm->chip_id = tps->chip_id;  in tps6594_pfsm_probe()
288 	for (i = 0 ; i < pdev->num_resources ; i++) {  in tps6594_pfsm_probe()
289 		irq = platform_get_irq_byname(pdev, pdev->resource[i].name);  in tps6594_pfsm_probe()
295 						pdev->resource[i].name, pdev);  in tps6594_pfsm_probe()
302 	return misc_register(&pfsm->miscdev);  in tps6594_pfsm_probe()
309 	misc_deregister(&pfsm->miscdev);  in tps6594_pfsm_remove()
314 		.name = "tps6594-pfsm",
322 MODULE_ALIAS("platform:tps6594-pfsm");
324 MODULE_DESCRIPTION("TPS6594 Pre-configurable Finite State Machine Driver");