1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * Core, IRQ and I2C device driver for DA9061 and DA9062 PMICs
4  * Copyright (C) 2015-2017  Dialog Semiconductor
17 #include <linux/mfd/da9062/core.h>
18 #include <linux/mfd/da9062/registers.h>
83 	.name = "da9061-irq",
155 	.name = "da9062-irq",
185 	MFD_CELL_OF("da9061-core", da9061_core_resources, NULL, 0, 0,
187 	MFD_CELL_OF("da9062-regulators", da9061_regulators_resources, NULL, 0, 0,
189 	MFD_CELL_OF("da9061-watchdog", da9061_wdt_resources, NULL, 0, 0,
190 		    "dlg,da9061-watchdog"),
191 	MFD_CELL_OF("da9061-thermal", da9061_thermal_resources, NULL, 0, 0,
192 		    "dlg,da9061-thermal"),
193 	MFD_CELL_OF("da9061-onkey", da9061_onkey_resources, NULL, 0, 0,
194 		    "dlg,da9061-onkey"),
198 	MFD_CELL_OF("da9061-core", NULL, NULL, 0, 0, NULL),
199 	MFD_CELL_OF("da9062-regulators", NULL, NULL, 0, 0, NULL),
200 	MFD_CELL_OF("da9061-watchdog", NULL, NULL, 0, 0, "dlg,da9061-watchdog"),
201 	MFD_CELL_OF("da9061-thermal", NULL, NULL, 0, 0, "dlg,da9061-thermal"),
202 	MFD_CELL_OF("da9061-onkey", NULL, NULL, 0, 0, "dlg,da9061-onkey"),
239 	MFD_CELL_OF("da9062-core", da9062_core_resources, NULL, 0, 0,
241 	MFD_CELL_OF("da9062-regulators", da9062_regulators_resources, NULL, 0, 0,
243 	MFD_CELL_OF("da9062-watchdog", da9062_wdt_resources, NULL, 0, 0,
244 		    "dlg,da9062-watchdog"),
245 	MFD_CELL_OF("da9062-thermal", da9062_thermal_resources, NULL, 0, 0,
246 		    "dlg,da9062-thermal"),
247 	MFD_CELL_OF("da9062-rtc", da9062_rtc_resources, NULL, 0, 0,
248 		    "dlg,da9062-rtc"),
249 	MFD_CELL_OF("da9062-onkey", da9062_onkey_resources, NULL, 0, 0,
250 		    "dlg,da9062-onkey"),
251 	MFD_CELL_OF("da9062-gpio", da9062_gpio_resources, NULL, 0, 0,
252 		    "dlg,da9062-gpio"),
256 	MFD_CELL_OF("da9062-core", NULL, NULL, 0, 0, NULL),
257 	MFD_CELL_OF("da9062-regulators", NULL, NULL, 0, 0, NULL),
258 	MFD_CELL_OF("da9062-watchdog", NULL, NULL, 0, 0, "dlg,da9062-watchdog"),
259 	MFD_CELL_OF("da9062-thermal", NULL, NULL, 0, 0, "dlg,da9062-thermal"),
260 	MFD_CELL_OF("da9062-rtc", NULL, NULL, 0, 0, "dlg,da9062-rtc"),
261 	MFD_CELL_OF("da9062-onkey", NULL, NULL, 0, 0, "dlg,da9062-onkey"),
262 	MFD_CELL_OF("da9062-gpio", NULL, NULL, 0, 0, "dlg,da9062-gpio"),
265 static int da9062_clear_fault_log(struct da9062 *chip)  in da9062_clear_fault_log()
270 	ret = regmap_read(chip->regmap, DA9062AA_FAULT_LOG, &fault_log);  in da9062_clear_fault_log()
276 			dev_dbg(chip->dev, "Fault log entry detected: TWD_ERROR\n");  in da9062_clear_fault_log()
278 			dev_dbg(chip->dev, "Fault log entry detected: POR\n");  in da9062_clear_fault_log()
280 			dev_dbg(chip->dev, "Fault log entry detected: VDD_FAULT\n");  in da9062_clear_fault_log()
282 			dev_dbg(chip->dev, "Fault log entry detected: VDD_START\n");  in da9062_clear_fault_log()
284 			dev_dbg(chip->dev, "Fault log entry detected: TEMP_CRIT\n");  in da9062_clear_fault_log()
286 			dev_dbg(chip->dev, "Fault log entry detected: KEY_RESET\n");  in da9062_clear_fault_log()
288 			dev_dbg(chip->dev, "Fault log entry detected: NSHUTDOWN\n");  in da9062_clear_fault_log()
290 			dev_dbg(chip->dev, "Fault log entry detected: WAIT_SHUT\n");  in da9062_clear_fault_log()
292 		ret = regmap_write(chip->regmap, DA9062AA_FAULT_LOG,  in da9062_clear_fault_log()
299 static int da9062_get_device_type(struct da9062 *chip)  in da9062_get_device_type()
305 	ret = regmap_read(chip->regmap, DA9062AA_DEVICE_ID, &device_id);  in da9062_get_device_type()
307 		dev_err(chip->dev, "Cannot read chip ID.\n");  in da9062_get_device_type()
308 		return -EIO;  in da9062_get_device_type()
311 		dev_err(chip->dev, "Invalid device ID: 0x%02x\n", device_id);  in da9062_get_device_type()
312 		return -ENODEV;  in da9062_get_device_type()
315 	ret = regmap_read(chip->regmap, DA9062AA_VARIANT_ID, &variant_id);  in da9062_get_device_type()
317 		dev_err(chip->dev, "Cannot read chip variant id.\n");  in da9062_get_device_type()
318 		return -EIO;  in da9062_get_device_type()
328 		type = "DA9062";  in da9062_get_device_type()
335 	dev_info(chip->dev,  in da9062_get_device_type()
336 		 "Device detected (device-ID: 0x%02X, var-ID: 0x%02X, %s)\n",  in da9062_get_device_type()
342 		dev_err(chip->dev,  in da9062_get_device_type()
344 		return -ENODEV;  in da9062_get_device_type()
350 static u32 da9062_configure_irq_type(struct da9062 *chip, int irq, u32 *trigger)  in da9062_configure_irq_type()
356 		dev_err(chip->dev, "Invalid IRQ: %d\n", irq);  in da9062_configure_irq_type()
357 		return -EINVAL;  in da9062_configure_irq_type()
369 		dev_warn(chip->dev, "Unsupported IRQ type: %d\n", *trigger);  in da9062_configure_irq_type()
370 		return -EINVAL;  in da9062_configure_irq_type()
372 	return regmap_update_bits(chip->regmap, DA9062AA_CONFIG_A,  in da9062_configure_irq_type()
593 	struct da9062 *chip;  in da9062_i2c_probe()
602 	chip = devm_kzalloc(&i2c->dev, sizeof(*chip), GFP_KERNEL);  in da9062_i2c_probe()
604 		return -ENOMEM;  in da9062_i2c_probe()
606 	chip->chip_type = (uintptr_t)i2c_get_match_data(i2c);  in da9062_i2c_probe()
609 	chip->dev = &i2c->dev;  in da9062_i2c_probe()
612 	switch (chip->chip_type) {  in da9062_i2c_probe()
624 		dev_err(chip->dev, "Unrecognised chip type\n");  in da9062_i2c_probe()
625 		return -ENODEV;  in da9062_i2c_probe()
628 	chip->regmap = devm_regmap_init_i2c(i2c, config);  in da9062_i2c_probe()
629 	if (IS_ERR(chip->regmap)) {  in da9062_i2c_probe()
630 		ret = PTR_ERR(chip->regmap);  in da9062_i2c_probe()
631 		dev_err(chip->dev, "Failed to allocate register map: %d\n",  in da9062_i2c_probe()
637 	if (i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C)) {  in da9062_i2c_probe()
638 		dev_info(chip->dev, "Entering I2C mode!\n");  in da9062_i2c_probe()
639 		ret = regmap_clear_bits(chip->regmap, DA9062AA_CONFIG_J,  in da9062_i2c_probe()
642 			dev_err(chip->dev, "Failed to set Two-Wire Bus Mode.\n");  in da9062_i2c_probe()
649 		dev_warn(chip->dev, "Cannot clear fault log\n");  in da9062_i2c_probe()
656 	if (i2c->irq) {  in da9062_i2c_probe()
657 		if (chip->chip_type == COMPAT_TYPE_DA9061) {  in da9062_i2c_probe()
667 		ret = da9062_configure_irq_type(chip, i2c->irq, &trigger_type);  in da9062_i2c_probe()
669 			dev_err(chip->dev, "Failed to configure IRQ type\n");  in da9062_i2c_probe()
673 		ret = regmap_add_irq_chip(chip->regmap, i2c->irq,  in da9062_i2c_probe()
675 					  -1, irq_chip, &chip->regmap_irq);  in da9062_i2c_probe()
677 			dev_err(chip->dev, "Failed to request IRQ %d: %d\n",  in da9062_i2c_probe()
678 				i2c->irq, ret);  in da9062_i2c_probe()
682 		irq_base = regmap_irq_chip_get_base(chip->regmap_irq);  in da9062_i2c_probe()
685 	ret = mfd_add_devices(chip->dev, PLATFORM_DEVID_NONE, cell,  in da9062_i2c_probe()
689 		dev_err(chip->dev, "Cannot register child devices\n");  in da9062_i2c_probe()
690 		if (i2c->irq)  in da9062_i2c_probe()
691 			regmap_del_irq_chip(i2c->irq, chip->regmap_irq);  in da9062_i2c_probe()
700 	struct da9062 *chip = i2c_get_clientdata(i2c);  in da9062_i2c_remove()
702 	mfd_remove_devices(chip->dev);  in da9062_i2c_remove()
703 	regmap_del_irq_chip(i2c->irq, chip->regmap_irq);  in da9062_i2c_remove()
708 	{ .compatible = "dlg,da9062", .data = (void *)COMPAT_TYPE_DA9062 },
715 	{ "da9062", COMPAT_TYPE_DA9062 },
722 		.name = "da9062",
732 MODULE_DESCRIPTION("Core device driver for Dialog DA9061 and DA9062");