1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
25  * These chips are often used in OMAP-based systems.
27  * This driver implements software-based resource control for various
34 	u8			base;  member
39 	/* voltage in mV = table[VSEL]; table_len must be a power-of-two */
57 /* LDO control registers ... offset is from the base of its register bank.
81 			&value, info->base + offset);  in twlreg_read()
90 			value, info->base + offset);  in twlreg_write()
93 /*----------------------------------------------------------------------*/
147 		timeout--;  in twl4030_wait_pb_ready()
150 	return -ETIMEDOUT;  in twl4030_wait_pb_ready()
246 		message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);  in twl4030reg_set_mode()
249 		message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);  in twl4030reg_set_mode()
252 		return -EINVAL;  in twl4030reg_set_mode()
270 /*----------------------------------------------------------------------*/
273  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
289 #define UNSUP(x)	(UNSUP_MASK | (x))  argument
290 #define IS_UNSUP(info, x)			\  argument
291 	((UNSUP_MASK & (x)) &&			\
292 	 !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
293 #define LDO_MV(x)	(~UNSUP_MASK & (x))  argument
297 	UNSUP(1500), UNSUP(1800), 2500, 2800,
302 	1500, 1800, UNSUP(1850), 2500,
308 	1500, 1800, 2000, 2500,
313 	1500, 1800, 2500, 2800,
318 	1500, 1800, UNSUP(1850), 2500,
327 	UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
337 	UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
352 	2500, 2750,
369 	int			mV = info->table[index];  in twl4030ldo_list_voltage()
391 	vsel &= info->table_len - 1;  in twl4030ldo_get_voltage_sel()
415 	int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);  in twl4030smps_set_voltage()
440 /*----------------------------------------------------------------------*/
454 /*----------------------------------------------------------------------*/
458 	.base = offset, \
478 	.base = offset, \
498 	.base = offset, \
553 	TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
554 	TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
555 	TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
556 	TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
557 	TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
558 	TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
559 	TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
560 	TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
561 	TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
562 	TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
563 	TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
564 	TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
565 	TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
566 	TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
567 	TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
568 	TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
569 	TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
570 	TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
571 	TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
572 	TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
587 	template = of_device_get_match_data(&pdev->dev);  in twlreg_probe()
589 		return -ENODEV;  in twlreg_probe()
591 	id = template->desc.id;  in twlreg_probe()
592 	initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,  in twlreg_probe()
593 						&template->desc);  in twlreg_probe()
595 		return -EINVAL;  in twlreg_probe()
597 	info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);  in twlreg_probe()
599 		return -ENOMEM;  in twlreg_probe()
601 	/* Constrain board-specific capabilities according to what  in twlreg_probe()
604 	c = &initdata->constraints;  in twlreg_probe()
605 	c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;  in twlreg_probe()
606 	c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE  in twlreg_probe()
617 		c->always_on = true;  in twlreg_probe()
623 	config.dev = &pdev->dev;  in twlreg_probe()
626 	config.of_node = pdev->dev.of_node;  in twlreg_probe()
628 	rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);  in twlreg_probe()
630 		dev_err(&pdev->dev, "can't register %s, %ld\n",  in twlreg_probe()
631 				info->desc.name, PTR_ERR(rdev));  in twlreg_probe()
636 	twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP, info->remap);  in twlreg_probe()
638 	/* NOTE:  many regulators support short-circuit IRQs (presentable  in twlreg_probe()
640 	 *  - SC_CONFIG  in twlreg_probe()
641 	 *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)  in twlreg_probe()
642 	 *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)  in twlreg_probe()
643 	 *  - IT_CONFIG  in twlreg_probe()