1 // SPDX-License-Identifier: GPL-2.0
3  * R-Car Generation 2 da9063(L)/da9210 regulator quirk
9  * After cold boot or da9063-induced restart, both the da9063 and da9210 seem
32 #define IRQC_BASE		0xe61c0000
33 #define IRQC_MONITOR		0x104	/* IRQn Signal Level Monitor Register */
38 #define DA9210_REG_MASK_A		0x54
53 static u8 da9063_irq_clr[] = { DA9063_REG_IRQ_MASK_A, 0xff, 0xff, 0xff, 0xff };
54 static u8 da9210_irq_clr[] = { DA9210_REG_MASK_A, 0xff, 0xff };
81 	u32 mon;  in regulator_quirk_notify()  local
84 		return 0;  in regulator_quirk_notify()
86 	mon = ioread32(irqc + IRQC_MONITOR);  in regulator_quirk_notify()
87 	dev_dbg(dev, "%s: %ld, IRQC_MONITOR = 0x%x\n", __func__, action, mon);  in regulator_quirk_notify()
88 	if (mon & REGULATOR_IRQ_MASK)  in regulator_quirk_notify()
91 	if (action != BUS_NOTIFY_ADD_DEVICE || dev->type == &i2c_adapter_type)  in regulator_quirk_notify()
92 		return 0;  in regulator_quirk_notify()
95 	dev_dbg(dev, "Detected %s\n", client->name);  in regulator_quirk_notify()
103 		if (!pos->shared)  in regulator_quirk_notify()
106 		if (pos->np->parent != client->dev.parent->of_node)  in regulator_quirk_notify()
109 		dev_info(&client->dev, "clearing %s@0x%02x interrupts\n",  in regulator_quirk_notify()
110 			 pos->id->compatible, pos->i2c_msg.addr);  in regulator_quirk_notify()
112 		ret = i2c_transfer(client->adapter, &pos->i2c_msg, 1);  in regulator_quirk_notify()
114 			dev_err(&client->dev, "i2c error %d\n", ret);  in regulator_quirk_notify()
117 	mon = ioread32(irqc + IRQC_MONITOR);  in regulator_quirk_notify()
118 	if (mon & REGULATOR_IRQ_MASK)  in regulator_quirk_notify()
121 	return 0;  in regulator_quirk_notify()
127 		list_del(&pos->list);  in regulator_quirk_notify()
128 		of_node_put(pos->np);  in regulator_quirk_notify()
134 	return 0;  in regulator_quirk_notify()
147 	u32 mon, addr;  in rcar_gen2_regulator_quirk()  local
155 		return -ENODEV;  in rcar_gen2_regulator_quirk()
169 			ret = -ENOMEM;  in rcar_gen2_regulator_quirk()
174 		argsa = &quirk->irq_args;  in rcar_gen2_regulator_quirk()
175 		memcpy(&quirk->i2c_msg, id->data, sizeof(quirk->i2c_msg));  in rcar_gen2_regulator_quirk()
177 		quirk->id = id;  in rcar_gen2_regulator_quirk()
178 		quirk->np = of_node_get(np);  in rcar_gen2_regulator_quirk()
179 		quirk->i2c_msg.addr = addr;  in rcar_gen2_regulator_quirk()
181 		ret = of_irq_parse_one(np, 0, argsa);  in rcar_gen2_regulator_quirk()
189 			argsb = &pos->irq_args;  in rcar_gen2_regulator_quirk()
191 			if (argsa->args_count != argsb->args_count)  in rcar_gen2_regulator_quirk()
194 			ret = memcmp(argsa->args, argsb->args,  in rcar_gen2_regulator_quirk()
195 				     argsa->args_count *  in rcar_gen2_regulator_quirk()
196 				     sizeof(argsa->args[0]));  in rcar_gen2_regulator_quirk()
198 				pos->shared = true;  in rcar_gen2_regulator_quirk()
199 				quirk->shared = true;  in rcar_gen2_regulator_quirk()
203 		list_add_tail(&quirk->list, &quirk_list);  in rcar_gen2_regulator_quirk()
208 		ret = -ENOMEM;  in rcar_gen2_regulator_quirk()
212 	mon = ioread32(irqc + IRQC_MONITOR);  in rcar_gen2_regulator_quirk()
213 	if (mon & REGULATOR_IRQ_MASK) {  in rcar_gen2_regulator_quirk()
216 		ret = 0;  in rcar_gen2_regulator_quirk()
223 	return 0;  in rcar_gen2_regulator_quirk()
229 		list_del(&pos->list);  in rcar_gen2_regulator_quirk()
230 		of_node_put(pos->np);  in rcar_gen2_regulator_quirk()