1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * twl-regulator.c -- support regulators in twl4030/twl6030 family chips
26  * These chips are often used in OMAP-based systems.
28  * This driver implements software-based resource control for various
35 	u8			base;  member
40 	/* voltage in mV = table[VSEL]; table_len must be a power-of-two */
58 /* LDO control registers ... offset is from the base of its register bank.
82 			&value, info->base + offset);  in twlreg_read()
91 			value, info->base + offset);  in twlreg_write()
94 /*----------------------------------------------------------------------*/
148 		timeout--;  in twl4030_wait_pb_ready()
151 	return -ETIMEDOUT;  in twl4030_wait_pb_ready()
253 		message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_ACTIVE);  in twl4030reg_set_mode()
256 		message = MSG_SINGULAR(DEV_GRP_P1, info->id, RES_STATE_SLEEP);  in twl4030reg_set_mode()
259 		return -EINVAL;  in twl4030reg_set_mode()
277 /*----------------------------------------------------------------------*/
280  * Support for adjustable-voltage LDOs uses a four bit (or less) voltage
296 #define UNSUP(x)	(UNSUP_MASK | (x))  argument
297 #define IS_UNSUP(info, x)			\  argument
298 	((UNSUP_MASK & (x)) &&			\
299 	 !((info)->features & TWL4030_ALLOW_UNSUPPORTED))
300 #define LDO_MV(x)	(~UNSUP_MASK & (x))  argument
304 	UNSUP(1500), UNSUP(1800), 2500, 2800,
309 	1500, 1800, UNSUP(1850), 2500,
315 	1500, 1800, 2000, 2500,
320 	1500, 1800, 2500, 2800,
325 	1500, 1800, UNSUP(1850), 2500,
334 	UNSUP(1500), UNSUP(1800), 1850, UNSUP(2500),
344 	UNSUP(1500), 1800, UNSUP(1850), UNSUP(2500),
359 	2500, 2750,
376 	int			mV = info->table[index];  in twl4030ldo_list_voltage()
398 	vsel &= info->table_len - 1;  in twl4030ldo_get_voltage_sel()
422 	int vsel = DIV_ROUND_UP(min_uV - 600000, 12500);  in twl4030smps_set_voltage()
447 /*----------------------------------------------------------------------*/
461 /*----------------------------------------------------------------------*/
465 	.base = offset, \
485 	.base = offset, \
505 	.base = offset, \
560 	TWL4030_OF_MATCH("ti,twl4030-vaux1", VAUX1),
561 	TWL4030_OF_MATCH("ti,twl4030-vaux2", VAUX2_4030),
562 	TWL4030_OF_MATCH("ti,twl5030-vaux2", VAUX2),
563 	TWL4030_OF_MATCH("ti,twl4030-vaux3", VAUX3),
564 	TWL4030_OF_MATCH("ti,twl4030-vaux4", VAUX4),
565 	TWL4030_OF_MATCH("ti,twl4030-vmmc1", VMMC1),
566 	TWL4030_OF_MATCH("ti,twl4030-vmmc2", VMMC2),
567 	TWL4030_OF_MATCH("ti,twl4030-vpll1", VPLL1),
568 	TWL4030_OF_MATCH("ti,twl4030-vpll2", VPLL2),
569 	TWL4030_OF_MATCH("ti,twl4030-vsim", VSIM),
570 	TWL4030_OF_MATCH("ti,twl4030-vdac", VDAC),
571 	TWL4030_OF_MATCH("ti,twl4030-vintana2", VINTANA2),
572 	TWL4030_OF_MATCH("ti,twl4030-vio", VIO),
573 	TWL4030_OF_MATCH("ti,twl4030-vdd1", VDD1),
574 	TWL4030_OF_MATCH("ti,twl4030-vdd2", VDD2),
575 	TWLFIXED_OF_MATCH("ti,twl4030-vintana1", VINTANA1),
576 	TWLFIXED_OF_MATCH("ti,twl4030-vintdig", VINTDIG),
577 	TWLFIXED_OF_MATCH("ti,twl4030-vusb1v5", VUSB1V5),
578 	TWLFIXED_OF_MATCH("ti,twl4030-vusb1v8", VUSB1V8),
579 	TWLFIXED_OF_MATCH("ti,twl4030-vusb3v1", VUSB3V1),
594 	template = of_device_get_match_data(&pdev->dev);  in twlreg_probe()
596 		return -ENODEV;  in twlreg_probe()
598 	id = template->desc.id;  in twlreg_probe()
599 	initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,  in twlreg_probe()
600 						&template->desc);  in twlreg_probe()
602 		return -EINVAL;  in twlreg_probe()
604 	info = devm_kmemdup(&pdev->dev, template, sizeof(*info), GFP_KERNEL);  in twlreg_probe()
606 		return -ENOMEM;  in twlreg_probe()
608 	/* Constrain board-specific capabilities according to what  in twlreg_probe()
611 	c = &initdata->constraints;  in twlreg_probe()
612 	c->valid_modes_mask &= REGULATOR_MODE_NORMAL | REGULATOR_MODE_STANDBY;  in twlreg_probe()
613 	c->valid_ops_mask &= REGULATOR_CHANGE_VOLTAGE  in twlreg_probe()
624 		c->always_on = true;  in twlreg_probe()
630 	config.dev = &pdev->dev;  in twlreg_probe()
633 	config.of_node = pdev->dev.of_node;  in twlreg_probe()
635 	rdev = devm_regulator_register(&pdev->dev, &info->desc, &config);  in twlreg_probe()
637 		dev_err(&pdev->dev, "can't register %s, %ld\n",  in twlreg_probe()
638 				info->desc.name, PTR_ERR(rdev));  in twlreg_probe()
643 	twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_REMAP, info->remap);  in twlreg_probe()
645 	/* NOTE:  many regulators support short-circuit IRQs (presentable  in twlreg_probe()
647 	 *  - SC_CONFIG  in twlreg_probe()
648 	 *  - SC_DETECT1 (vintana2, vmmc1/2, vaux1/2/3/4)  in twlreg_probe()
649 	 *  - SC_DETECT2 (vusb, vdac, vio, vdd1/2, vpll2)  in twlreg_probe()
650 	 *  - IT_CONFIG  in twlreg_probe()